[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.1"]
[White "Caruana, Fabiano"]
[Black "Chigaev, Maksim"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2800"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,67,25,6,34,29,20,28,44,33,48,52,59,50,52,49,68,47,69,74,76,76,68,0,8,
0,1,-33,68,27,55,43,46,46,56,0,0,0,0,0,0,0,0,0,191,162,153,99,315,311,632,633,
1140,1131,12822,7312,2050,1310]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5.
Nc3 a6 6. h3 e6 7. g4 h6 {B81: Sicilian Scheveningen: Keres Attack.} 8. a3 $5 {
[%mdl 4] Exploring less charted territory.} Be7 9. Be3 Nc6 {White has an edge.}
10. Rg1 {[#]} Nd7 $146 ({Predecessor:} 10... Qc7 11. Qe2 Nxd4 12. Bxd4 e5 13.
Be3 Be6 14. O-O-O Rc8 15. Kb1 Qc6 16. Bg2 Nd7 {1/2-1/2 (29) Zolochevsky,V 
(2365)-Ermolaev,A (2431) ICCF email 2011}) 11. Be2 g5 12. Qd2 Nce5 13. O-O-O b5
14. h4 Bb7 15. hxg5 hxg5 16. Rh1 Rg8 17. Rh5 (17. Nb3 $14) 17... Rc8 18. Rdh1
Bf6 19. f3 Qe7 (19... Nb6 $1 $15) 20. Kb1 Nc4 21. Bxc4 Rxc4 22. b3 Rc8 23. Nd5
exd5 $11 24. Nf5 $36 {[%cal Rf5e7][%mdl 2048] White has some pressure.} Qe6 {
And now ...Bc3 would win.} 25. Bxg5 {aiming for exd5.} Bc3 26. Qh2 Ne5 ({
Avoid the trap} 26... dxe4 $2 27. Nxd6+ Kf8 28. Nxc8 $18 (28. Nxb7 exf3 29.
Bh6+ Ke7 $18)) 27. Rh6 Rg6 (27... Ng6 $1 $11 28. Nxd6+ Kd7 29. Nxb7 Kc6 30.
exd5+ Qxd5 {[%mdl 64] Double Attack} 31. Nd8+ Rcxd8 32. Bxd8 Rxd8) 28. Rxg6
Qxg6 {[#]} 29. Qf4 (29. Qf2 $142 $1 Qxg5 30. Qb6) 29... Nxf3 $2 {This costs
Black the game.} 30. Qxf3 $18 dxe4 $2 (30... Be5) 31. Qe3 {White is clearly
winning.} Bg7 {[#]} 32. Qa7 $1 Qxg5 (32... Kd7 33. Rd1) 33. Qxb7 {[%mdl 64]
Double Attack} Rd8 34. Rh7 {Weighted Error Value: White=0.12/Black=0.51} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.2"]
[White "Tabatabaei, M. Amin"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "D26"]
[WhiteElo "2639"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,109,26,21,30,9,9,12,26,1,6,0,0,4,5,14,15,0,0,0,6,8,8,4,34,33,48,40,
57,55,76,45,42,45,45,46,43,36,46,45,47,48,51,38,37,0,48,36,50,36,37,37,38,60,
89,39,36,32,89,47,47,47,47,59,126,126,116,47,47,47,47,47,47,47,47,47,47,47,47,
47,47,47,47,47,47,47,47,47,47,47,47,47,47,47,47,47,47,47,47,30]} 1. d4 d5 2. c4
dxc4 3. Nf3 e6 4. e3 Nf6 5. Bxc4 a6 6. O-O c5 7. b3 {7.dxc5 is setting a new
trend.} Nbd7 {D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7
a4.} 8. Nbd2 b6 9. Bb2 Bb7 {The position is equal.} 10. Be2 Be7 11. Ne5 {[#]}
cxd4 $146 ({Predecessor:} 11... O-O 12. Bf3 Qc7 13. Nxd7 Nxd7 14. Rc1 Qb8 15.
Nc4 Rd8 16. Qe2 Bf6 17. Rfd1 cxd4 18. Bxd4 Bxf3 19. Qxf3 Bxd4 20. Rxd4 {
1-0 (36) Nikolaidis,I (2565)-Paunovic,D (2495) Korinthos 1997}) 12. Nxd7 Qxd7
13. Bxd4 b5 14. Bf3 (14. Qc2 {looks sharper.} O-O 15. Qb2 Rfd8 16. Nf3 Qd5 17.
a4) 14... O-O 15. Bxf6 Bxf3 16. Nxf3 Qxd1 17. Rfxd1 gxf6 18. Rd7 Rfe8 19. g4
Kf8 20. Rc1 Rec8 21. Rcc7 (21. Rxc8+ {feels hotter.} Rxc8 22. Ra7 Rc6 23. Nd4
Rb6 24. Kg2) 21... Rxc7 22. Rxc7 $14 {[%mdl 4096] Endgame KRB-KRN} Bd6 23. Rb7
Bc5 24. Kf1 Rc8 25. h4 h6 26. h5 Rc6 27. Ke2 Rc8 28. Kf1 Ke8 29. Nd2 Kf8 30.
Ne4 Kg7 31. Kg2 Rc6 32. Rb8 Bd6 33. Rd8 Bb4 34. Ra8 Bd6 (34... Be1 $14) 35. f4
Bb4 36. Kf3 Be1 37. Ke2 f5 {[#]} 38. gxf5 $1 $16 exf5 {[#]} 39. Nd6 {[%mdl 512]
} Rxd6 $14 {White is slightly better.} 40. Kxe1 {KR-KR} Kf6 41. Rc8 Ke6 42. Rh8
Ke7 43. Ke2 Kd7 $1 44. Rf8 Ke7 45. Rc8 Kd7 46. Ra8 Ke7 47. Ra7+ Ke6 48. Kf3 Kf6
49. Ra8 Ke7 50. Ke2 Kd7 51. a4 bxa4 $1 52. bxa4 Ke7 53. Rc8 Kd7 54. Rb8 Ke7 55.
Rb7+ {Weighted Error Value: White=0.07/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.3"]
[White "Firouzja, Alireza"]
[Black "Abasov, Nijat"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "2770"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,55,16,33,27,31,33,31,20,28,22,50,55,60,59,58,46,47,50,51,44,52,47,58,
52,66,60,100,104,97,99,98,110,170,164,206,216,426,428,496,450,590,589,571,572,
1267,1058,967,931]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d5 5. Nbd2 Be7 6.
Nxe4 {C43: Petroff Defence: 3 d4.} dxe4 7. Qxd8+ Bxd8 8. Nd4 {White is
slightly better.} Nd7 9. Bf4 {[#]} Nc5 $146 ({Predecessor:} 9... O-O 10. O-O-O
c6 11. e6 Nb6 12. Bd6 Bg5+ 13. Kb1 Re8 14. exf7+ Kxf7 15. Be2 Bf6 {1/2-1/2 (31)
Wen,Y (2613)-Bai,J (2585) Xinghua 2017}) 10. O-O-O c6 11. Bc4 Be7 12. Rhe1 a5
13. h3 h5 14. a3 Bd7 15. Kb1 b5 16. Ba2 O-O 17. g4 hxg4 18. hxg4 Bxg4 19. Nxc6
Rfe8 20. Rd5 Rac8 {[#]} (20... Bf8 $16) 21. Na7 $1 $18 ({Don't do} 21. Nxa5 $6
Be6 $16) 21... Ra8 22. Nxb5 Reb8 $2 (22... Be6 {might work better.} 23. Rdd1
Bxa2+ 24. Kxa2 Rec8) 23. Nc7 {White is clearly winning.} Ra7 24. e6 $1 {
[%cal Re6f7]} Rab7 25. exf7+ Kf8 26. Be5 Nd7 {[#]} 27. Rxd7 Bxd7 28. Rh1 {
[%cal Rh1h8] Weighted Error Value: White=0.01/Black=0.41} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.4"]
[White "Niemann, Hans Moke"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2638"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,66,28,25,17,22,14,12,12,17,0,0,0,10,0,0,0,18,16,7,7,7,7,2,0,0,0,5,0,
0,-6,-8,-12,5,4,2,2,4,0,0,-43,-43,-43,-43,-43,-43,-60,-43,-66,0,-66,0,-67,0,
-67,0]} 1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. e3 Nf6 5. d4 exd4 6. exd4 d5 7. Be2
cxd4 {is cutting edge theory.} 8. Nxd4 {A34: Symmetrical English: 2 Nc3, lines
with ...d5.} dxc4 9. Nxc6 {[%csl Gc6][%cal Rd1d8] [#]} Qxd1+ 10. Nxd1 {
Strongly threatening Nd4.The position is equal.} bxc6 11. Bd2 Be6 12. Rc1 {[#]}
Ne4 $146 ({Predecessor:} 12... O-O-O 13. Bxc4 Bxc4 14. Rxc4 Kb7 15. Ne3 Nd5 16.
O-O Nb6 17. Rc2 Bc5 18. Rfc1 Bxe3 19. Bxe3 {1/2-1/2 (48) Magyar,O (2278)
-Bekefi,L (2284) Hungary 2005}) 13. Bxc4 Nxd2 14. Kxd2 Bb4+ 15. Ke2 Bg4+ 16. f3
Bd7 17. Nf2 Ke7 18. Rhd1 Rhd8 19. Bb3 Be8 (19... Rac8 {keeps more tension.} 20.
Nd3 Ba5 21. Nc5 Bf5 22. g4 Rxd1 23. Rxd1 Bb6) 20. Nd3 Ba5 21. Ne5 (21. g3 {
with more complications.} Rac8 22. Ne5 Rxd1 23. Bxd1 Rd8 24. Nc4) 21... Rxd1
22. Bxd1 Bc7 (22... Rd8 {is more complex.} 23. Nc4 Bc7 24. g3 f5 25. Ba4 g5)
23. Nxc6+ Bxc6 24. Rxc6 Bxh2 $11 {[%mdl 4096] Endgame KRB-KRB} 25. Rc3 (25. Rc4
{seems wilder.} Rb8 26. b4 Bd6 27. a3 Rb7 28. Rh4) 25... Rb8 26. Rb3 Rxb3 27.
Bxb3 $15 {KB-KB} Be5 28. g4 $1 Bxb2 29. Kf2 Bd4+ 30. Kg2 Bb2 (30... Be5 $15)
31. Bc4 (31. Kf2 $11) 31... Bd4 32. Bb3 Bb2 ({Better is} 32... Be5 $15) 33. Bc4
(33. Kf2 $11) 33... Bd4 {Weighted Error Value: White=0.15/Black=0.10} ({
Black should play} 33... Be5 $15) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.5"]
[White "Vitiugov, Nikita"]
[Black "Dreev, Aleksey"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2727"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,64,15,15,12,20,21,21,18,41,50,48,54,37,33,52,34,35,29,22,15,23,11,23,
0,0,0,0,0,0,-10,-1,0,-5,-10,-10,-10,-14,-16,-8,-8,-8,-8,-8,-8,-8,-16,-14,-25,
-24,-45,0,0,0,0,0]} 1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2
a5 7. Qc2 {E04: Open Catalan: 5 Nf3.} Bxd2+ 8. Qxd2 c6 9. a4 b5 10. axb5 {
10.Na3 is not played anymore.} cxb5 11. Qg5 O-O 12. Qxb5 Ba6 13. Qxa5 Bb7 $1
14. Qxd8 Rxa1 {[#]} 15. Qxf8+ Kxf8 16. O-O {Black must now prevent Ne5.} Ra2
17. Nc3 Rxb2 {[#]} 18. Rc1 $146 ({Predecessor:} 18. Rb1 Rxb1+ 19. Nxb1 Nd5 20.
Ne1 {1/2-1/2 (20) Blagojevic,D (2513)-Wojtaszek,R (2635) Heraklion 2007}) 18...
Nbd7 19. Kf1 Nb6 20. Ke1 g5 21. Kf1 h6 22. Ne5 Bxg2+ 23. Kxg2 Nfd5 24. Kf1 Nxc3
25. Rxc3 $11 {[%mdl 4096] Endgame KRN-KRN} Rb1+ 26. Kg2 Rb3 27. Rc1 c3 28. Nd3
Nd5 29. Kf1 Ke7 30. Ke1 Nb4 31. Nxb4 Rxb4 32. Rxc3 Rxd4 {Weighted Error Value:
White=0.04/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.6"]
[White "Erigaisi Arjun"]
[Black "Esipenko, Andrey"]
[Result "1/2-1/2"]
[ECO "E20"]
[WhiteElo "2634"]
[BlackElo "2720"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,85,20,14,21,18,10,0,11,4,12,0,6,0,0,0,14,11,21,20,24,10,35,10,81,78,
72,66,72,78,84,77,77,66,83,83,104,102,88,95,116,74,76,71,76,77,92,66,76,69,89,
53,89,67,68,0,79,53,65,54,52,54,54,56,65,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2.
c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Be7 6. e4 dxc4 7. Bxc4 c5 {E20: Nimzo-Indian:
4 g3 and 4 f3.} 8. dxc5 {Qxd8+ is the strong threat.} Qxd1+ 9. Kxd1 {Black
should prevent Nb5.} Bxc5 10. b4 Bb6 11. Nge2 {[#]} O-O $146 ({Predecessor:} 
11... Ke7 12. Kc2 Nc6 13. Rd1 Bd7 14. Bf4 Rhc8 15. Bd6+ Kd8 16. Kb3 Ne8 17. Bf8
a6 {1-0 (34) Enders,P (2516)-Taimanov,M (2439) Fuerth 2001}) 12. Na4 Bc7 13.
Be3 Rd8+ 14. Kc2 Nbd7 15. Rac1 a6 16. Kb1 {aiming for Bxe6!} b5 17. Ba2 $36 {
[%mdl 2048] White has some pressure.} Ne8 {[#]} (17... Be5 $11 18. Nc5 Nxc5 19.
bxc5 Rd3) 18. Bg5 $1 $16 {Hoping for Rxc7.} bxa4 {[#]} 19. Rxc7 $1 Nxc7 (19...
f6 20. Bxe6+) 20. Bxd8 Nb5 {[#]} 21. Kb2 $1 Bb7 22. Be7 Re8 23. Bh4 h6 24. Rd1
Bc6 25. Bg3 Rc8 26. Nf4 Kf8 27. Rc1 Ke7 28. Nd3 Nd6 29. Nc5 Nxc5 30. Rxc5 Nb7
31. Rc3 Kd7 32. Rd3+ Ke7 33. Rc3 Kd7 $1 34. Be5 f6 35. Bg3 e5 36. Bc4 Ra8 37.
Bf2 Nd6 38. Rd3 (38. Ba2 $1 $14 Bb5 39. Rc1) 38... Bb5 $11 {The position is
equal.} 39. Bxb5+ axb5 40. Bc5 Ra6 41. Rd5 Kc7 42. Bxd6+ Rxd6 43. Rxd6 {
Weighted Error Value: White=0.11/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.7"]
[White "Harikrishna, Pentala"]
[Black "Kovalev, Vladislav"]
[Result "1/2-1/2"]
[ECO "C97"]
[WhiteElo "2719"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,60,25,27,23,35,7,34,11,13,0,0,0,0,-4,-10,-20,-11,-16,-17,-22,-10,-7,
0,0,0,-27,-16,-37,-18,-18,10,8,20,6,2,-18,-5]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4.
Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4
Qc7 12. Nbd2 Be6 13. d5 Bd7 14. Nf1 {C97: Closed Ruy Lopez: Chigorin Defence:
11 d4 Qc7, sidelines.} Nc4 15. Ng3 {[#]} g6 $146 ({Predecessor:} 15... Rfc8 16.
Nh4 g6 17. Nf3 Ne8 18. Nh2 Ng7 19. Rf1 Bh4 20. Nf3 Be7 21. Nh2 Rf8 {1/2-1/2 
(83) Nakahara,K (2095)-Advait,B (2242) Chess.com INT 2020}) 16. b3 {White is
slightly better.} Nb6 17. Bg5 Rfc8 18. Qd2 a5 19. Qe2 c4 20. bxc4 Nxc4 21. Bd3
Na3 22. Rac1 Kg7 23. Qe3 Ng8 {next ...f6 is good for Black.} 24. Bxe7 Nxe7 25.
Qg5 {[#] Threatens to win with Nh5+.} Ng8 26. Nf5+ Kf8 27. Ne3 {The position
is equal.} Qd8 28. Qxd8+ Rxd8 29. c4 bxc4 30. Nxc4 Nxc4 {Not much happened in
this game.  Weighted Error Value: White=0.08/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.8"]
[White "Moussard, Jules"]
[Black "Dubov, Daniil"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2632"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,29,38,36,30,36,26,32,31,25,31,41,60,56,56,48,45,46,57,7,8,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,-10,-15,-17,-16,-12,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5
2. Nf3 Nc6 3. Bc4 Nf6 4. d3 h6 5. c3 d6 6. a4 {C55: Two Knights: 4 d3, 4 d4
exd4 5 e5 and Max Lange Attack.} g5 7. O-O Bg7 8. Re1 {White has an edge.} O-O
9. a5 a6 10. h3 {[#]} d5 $146 ({Predecessor:} 10... Ne7 11. Nbd2 Ng6 12. Nf1
Be6 13. Ng3 Qd7 14. Qb3 c6 15. Bxe6 fxe6 16. d4 Nh7 {1/2-1/2 (88) Kollars,D 
(2584)-Dhulipalla,B (2414) Stockholm 2019}) 11. exd5 Nxd5 12. Qb3 Nde7 13. Be3
Bf5 14. Bc5 {White wants to play d4.} (14. Qc2 {feels hotter.} Nd5 15. Nbd2 Be6
16. Qa4 Qd7 17. Ne4) 14... Bxd3 {The position is equal.} 15. Bxd3 Qxd3 16. Bxe7
Nxe7 17. Nxe5 Qd5 18. Qxd5 Nxd5 19. Nd2 Rfe8 20. Nec4 b5 21. axb6 {[#] b7 is
the strong threat.} Rxe1+ 22. Rxe1 {Strongly threatening b7.} cxb6 23. Ra1 b5
24. Ne3 Nxe3 25. fxe3 $11 {[%mdl 4096] Endgame KRB-KRN} b4 26. cxb4 Bxb2 27.
Ra4 Rb8 28. Rxa6 Bg7 29. Kf2 Rxb4 30. Kf3 Rb8 31. Ra2 {Weighted Error Value:
White=0.03/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.9"]
[White "Alekseenko, Kirill"]
[Black "Shevchenko, Kirill"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2710"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,79,13,11,0,6,0,19,0,0,0,0,16,14,28,31,38,20,40,26,33,23,16,25,21,89,
73,71,74,116,70,70,29,142,150,175,154,211,186,181,133,133,133,144,144,147,147,
141,122,132,118,100,102,138,138,194,194,298,292,292,285,564,366,927,876,1140,
936,962,869,947,870,1345,1132]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 Ngf6 5.
Bd3 cxd4 6. Nxd4 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.}
Nc5 7. Nc3 {[#]} e6 $146 ({Predecessor:} 7... a6 8. O-O g6 9. Nb3 Nxd3 10. cxd3
Bg7 11. a4 Bg4 12. f3 Qb6+ 13. d4 Be6 {1/2-1/2 (32) Tari,A (2625)-Duda,J (2743)
Wijk aan Zee 2021}) 8. O-O {The position is equal.} Be7 9. Re1 O-O 10. Bf1 Qc7
11. a4 Rd8 12. Bf4 a6 {[#] Strongly threatening ...e5.} 13. e5 dxe5 14. Bxe5
Qa5 15. Qf3 Ncd7 16. Bg3 Bb4 (16... Nc5 $11 17. Red1 Bd7) 17. Rad1 Re8 18. Nb3
Qh5 19. Qe3 e5 20. a5 e4 {[#]} (20... Nb8 $11 {remains equal.}) 21. Rd4 $1 $16
{[%cal Rd4b4]} Bxc3 22. Qxc3 Ne5 (22... Nd5 $16 23. Qf3 N5f6 24. Qxh5 Nxh5 25.
Rexe4 (25. Rdxe4 Rxe4 26. Rxe4 Ndf6 $18) 25... Rxe4 26. Rxe4 Ndf6) 23. Nc5 $18
Nc6 24. Nxe4 Nxe4 25. Rdxe4 Rxe4 26. Rxe4 {[%cal Re4e8]} Be6 27. b4 Rd8 28. Re1
Qd5 29. f3 h6 30. Rb1 Nd4 31. Bf2 Bf5 (31... Qe5 $16 32. Kh1 Nc6 33. Qxe5 Nxe5)
32. Rd1 {[%cal Rd1d4]} Nxf3+ (32... Qc6 {was necessary.} 33. Qxc6 (33. Rxd4
Qxc3 34. Rxd8+ Kh7 $17) 33... Nxc6 34. Rxd8+ Nxd8) 33. Qxf3 Qxd1 34. Qxf5 Rd6
$2 (34... Qb1 {was called for.} 35. Bb6 Rd1 36. Qc8+ Kh7) 35. c3 g6 $2 (35...
Rd8 36. Qe5 Qd6) 36. Qc8+ {White is clearly winning.} Kh7 37. Qxb7 Rf6 38. Qe7
Rf5 39. Qe1 Qc2 40. Bd4 {Weighted Error Value: White=0.16/Black=0.34} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.10"]
[White "Ponomariov, Ruslan"]
[Black "Fedoseev, Vladimir"]
[Result "1/2-1/2"]
[ECO "B53"]
[WhiteElo "2631"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,69,9,0,0,6,13,-10,0,-4,11,13,4,0,0,17,18,0,27,0,-7,0,12,16,8,0,0,0,
41,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3
d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 a6 6. Bxc6+ bxc6 7. O-O e5 8. Qd3 Ne7 {
B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} 9. Rd1 {next Nxe5!
is good for White.} Ng6 10. Na3 f6 11. Be3 Be6 (11... d5 $5) 12. Nc4 {[%cal
Rc4d6]} d5 13. Nb6 {White wants to play Qc3.} Nf4 14. Qf1 Rb8 15. exd5 Nxd5 16.
Nxd5 cxd5 17. c4 Qa5 18. cxd5 Bxd5 {[#]} 19. Rac1 $146 ({Predecessor:} 19. a3
Bb3 20. Rdc1 Be7 21. Nd2 Bd5 22. b4 Qb5 23. Rc7 Kf7 24. Rac1 Rhe8 25. Ra7 {
1-0 (66) Paichadze,L (2564)-Mgeladze,T (2374) Poti 2018}) 19... Rd8 ({Much
worse is} 19... Rxb2 $6 20. Qd3 $16) 20. a3 Be7 21. b4 Qb5 {The position is
equal.} 22. Qxb5+ axb5 23. Bb6 Bxf3 24. gxf3 Rxd1+ 25. Rxd1 $11 {[%mdl 4096]
Endgame KRB-KRB} Kf7 26. Rd7 Ke6 27. Rb7 Rc8 28. Be3 Rc3 29. Rb6+ Kd7 30. Rxb5
Rxa3 31. Rb7+ Ke6 32. Rb6+ Kd7 33. Rb7+ Ke6 34. Rb6+ Kd7 35. Rb7+ {An
uneventful encounter.  Weighted Error Value: White=0.04/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.11"]
[White "Yu, Yangyi"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2704"]
[BlackElo "2630"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,80,14,24,24,30,32,35,42,53,45,62,45,62,44,58,54,53,35,65,65,65,65,65,
65,65,65,65,65,65,65,65,58,58,18,58,58,65,58,58,49,58,58,58,0,58,58,58,58,58,
58,65,65,65,0,58,0,65,65,65,65,66,58,58,58,58,58,58,0,77]} 1. e4 c6 2. d4 d5 3.
e5 Bf5 4. Nf3 e6 5. Be2 c5 6. c3 Nc6 7. O-O Bg6 8. a3 {[%cal Ba2a3,Ba3a4][%mdl
32] [#] B12: Caro-Kann: Advance Variation.} Be7 $146 ({Predecessor:} 8... cxd4
9. cxd4 Nge7 10. b4 Nc8 11. Nbd2 Nb6 12. Bb2 Be7 13. b5 Na5 14. Bc3 Nbc4 15.
Qa4 O-O {1/2-1/2 (40) Kollars,D (2598)-Fridman,D (2601) Magdeburg 2021}) 9. b4
c4 10. a4 {White is slightly better.} h5 11. Na3 {[%cal Bb1a3,Ba3c2,Bc2e3]
[%mdl 32]} h4 12. Nc2 a6 13. Bf4 Nh6 14. Ne3 Nf5 15. Ng4 a5 16. b5 Nb8 17. h3
Nd7 18. Qd2 Nb6 19. Bd1 Kd7 20. Bc2 (20. Re1 {with more complications.} Kc7 21.
Ra2 Rc8 22. Bc2 Qg8 23. Qd1) 20... Rh5 21. Kh1 Qg8 22. Ng1 Rh8 23. Rae1 Rf8 24.
Nf3 Rc8 25. Kg1 Bd8 26. Qc1 Be7 27. Bg5 Qd8 28. Bf4 Qg8 $1 29. Re2 Rh5 30. Rfe1
Qf8 31. Bd1 Ba3 32. Qa1 Be7 33. Qc1 (33. Ra2 {seems wilder.} Kc7 34. Bc1 Kb8
35. Qb2 Rh8 36. Qd2) 33... Ba3 $1 {[%cal Ra3c1]} 34. Qa1 (34. Qd2 {looks
sharper.} Kc7 35. Qa2 Kb8 36. Qa1 Be7 37. Ra2) 34... Be7 $1 35. Ra2 Qd8 36. Qc1
(36. Bc1 {is more complex.} Kc7 37. Bc2 Kb8 38. Ne3 Qe8 39. Qb1) 36... Qg8 37.
Nfh2 Rh8 38. Nf1 Ra8 39. Nd2 Rc8 40. Nf3 Rh5 $1 {Weighted Error Value: White=0.
11/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.12"]
[White "Durarbayli, Vasif"]
[Black "Maghsoodloo, Parham"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "2629"]
[BlackElo "2701"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,84,20,22,26,36,29,43,24,9,15,23,25,15,25,41,41,44,40,60,50,43,43,74,
67,81,0,0,0,0,-60,-61,-62,-31,-37,-46,-45,-42,-37,-35,-92,-93,-102,-101,-112,
-112,-125,-121,-228,-239,-227,-223,-562,-466,-654,-329,-647,-642,-625,-617,
-613,-502,-589,-319,-262,-320,-29975,-29976,-29974,-29974,-29964,-671]} 1. e4
c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f3 e5 7. Nb3 Be7 8. Be3 Be6
9. Qe2 {B56: Classical Sicilian: Unusual Lines.} O-O 10. O-O-O Qc8 $1 {[%mdl 4]
outshines the older 10...Na5.} 11. g4 {White is slightly better.} a5 {Black
wants to play ...a4.} 12. g5 Ne8 {[#]} 13. Nd2 $146 ({Predecessor:} 13. Na4 Qc7
14. Kb1 b5 15. Qxb5 Nb4 16. c3 Bd7 17. Qb6 Bxa4 18. cxb4 Qxb6 19. Bxb6 axb4 {
1/2-1/2 (26) Oleksienko,M (2615)-Vovk,A (2634) Zhitomir 2017}) 13... Rb8 14. a4
{[%cal Ba2a4,Ba4b5][%mdl 32]} b5 15. axb5 Nd4 16. Qd3 {Hoping for f4.} Nc7 17.
Bxd4 exd4 18. Qxd4 Bxg5 19. Rg1 Bh6 20. f4 (20. Qxd6 $16 Be3 21. Rg2) 20... Bg4
$11 21. Re1 {aiming for f5.} Bd7 22. f5 (22. Bc4 $11) 22... Bxb5 $15 23. Kb1
Kh8 24. Rd1 ({But not} 24. Qxd6 $2 Rd8 $19) 24... Bxf1 25. Rgxf1 Rb4 $1 {
[%cal Rb4d4]} 26. Nc4 (26. Qxd6 $2 Rd8 $19) 26... Bg5 {Strongly threatening ...
Bf6.} 27. Qd3 {[#]} (27. f6 $1 $15 Bxf6 28. Rxf6) 27... Bf6 $1 $17 {[%cal
Rf6c3] White is on the road to losing.} 28. Na2 Rb8 29. c3 ({Don't go for} 29.
Qxd6 $2 Nb5 $19) 29... Nb5 {...Qxc4! is the strong threat.} 30. Ka1 a4 31. Nxd6
(31. Rb1 $17) 31... Nxd6 $19 32. Qxd6 a3 $40 {[%mdl 128] Black wants a kill.}
33. Qd5 $2 (33. Qxa3 {is a better chance.} Qc4 34. e5 Bxe5 35. Rfe1) 33... Re8
34. Rfe1 (34. Qd7 $142 axb2+ 35. Kb1) 34... h6 35. Qxf7 $2 (35. e5 axb2+ 36.
Kb1 Qxf5+ {[%mdl 64] Double Attack} 37. Qd3 Rxe5 38. Qxf5 Rxf5 39. Rd2) 35...
Rb7 36. Qd5 Re5 37. Qd6 axb2+ 38. Kb1 Ra7 39. Rd5 Re8 {( -> ...Qc4!)} 40. Rb5
$2 {[#]} (40. Rc5 $19 Qb7 41. Qd5) 40... Rxa2 $1 {[%mdl 576] Remove Defender,
Decoy. Black mates.} 41. Kxa2 Qc4+ 42. Rb3 b1=Q+ {Weighted Error Value:
White=0.53/Black=0.19} (42... Bxc3 $142 43. Qa3 Bxe1 44. Kxb2 Qe2+ 45. Ka1 Bh4
46. e5 Qxe5+ {[%mdl 64] Double Attack} 47. Qb2 Qa5+ 48. Ra3 Re1+ 49. Ka2 Qd5+
50. Rb3 Bf6 51. Qxf6 gxf6 52. h4 Re2+ 53. Ka1 Qxb3 54. h5 Re1#) 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.13"]
[White "Xiong, Jeffery"]
[Black "Zhou, Jianchao"]
[Result "1/2-1/2"]
[ECO "B24"]
[WhiteElo "2700"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "161"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,161,37,35,32,41,33,33,36,37,12,38,25,41,28,28,29,43,15,12,0,14,-23,
-13,-19,-19,-38,0,-11,0,0,14,0,0,-13,60,24,92,46,37,16,16,16,16,16,37,32,26,16,
22,16,16,16,24,24,32,31,32,19,31,1,1,1,1,1,1,1,4,8,11,11,31,22,44,0,14,4,52,44,
44,26,69,68,69,72,88,58,44,44,44,44,46,33,33,33,33,33,33,33,33,1,1,1,1,0,33,33,
33,33,46,46,46,46,46,46,46,46,46,33,46,44,46,33,46,46,46,44,44,44,44,0,44,44,
44,44,44,44,54,33,44,44,44,0,44,33,44,33,33,33,44,44,44,44,44,51]} 1. e4 c5 2.
Nc3 Nc6 3. Nf3 e5 4. Bc4 g6 5. d3 h6 $1 6. a3 {B30: Sicilian: 2...Nc6 3 Bb5,
lines without ...g6.} Bg7 7. b4 d6 8. Nd5 Nge7 9. Be3 b6 10. b5 {[#]} Na5 $146
({Predecessor:} 10... Nd4 11. a4 Bb7 12. Nxe7 Qxe7 13. Nd2 Qd7 14. O-O O-O 15.
Re1 Kh7 16. Qb1 Ne6 {1/2-1/2 (38) Kuhne,D (2384)-Milto,G ICCF email 2017}) 11.
Nxe7 Qxe7 12. Bd5 Bb7 13. Bxb7 Nxb7 14. O-O f5 15. Qb1 O-O 16. Qa2+ Qf7 17.
Rfd1 Qxa2 18. Rxa2 Kf7 19. g3 Rfd8 20. c4 a6 21. Rb1 a5 ({Black should try} 
21... fxe4 $11 22. dxe4 axb5) 22. Re1 Rf8 (22... g5 $11) 23. Nd2 Nd8 24. f3 Ne6
25. Nb1 f4 26. Bc1 Kg8 {Threatening ...fxg3.} 27. Rf1 g5 28. Nc3 Bf6 29. Rg2
Kh7 30. Nd5 Bd8 31. h4 fxg3 32. hxg5 hxg5 {Black wants to play ...Nf4.} 33.
Rxg3 Ra7 34. Kg2 Kg6 35. Rh1 Rh7 36. Rxh7 Kxh7 37. Rh3+ Kg6 38. Kg3 Nd4 {
[#] Hoping for ...Ne2+.} 39. Kg4 $36 {[%mdl 2048] White fights for an
advantage.} Ne6 40. Rh1 Nd4 41. Rh3 Ne6 42. Rh2 Nd4 43. Be3 Ne6 44. Rh1 Rg8 45.
Bf2 Rf8 46. Bg3 Ng7 47. Be1 Ne6 48. Rh2 Nd4 49. Bc3 Ne6 50. Ne3 {Black must
now prevent Nf5.} Rf4+ 51. Kg3 Rh4 $1 52. Nf5 Rxh2 53. Kxh2 $14 {[%mdl 4096]
Endgame KBN-KBN} Bc7 54. Ne7+ Kf7 55. Nd5 Bd8 56. Bd2 Kg6 57. Kg3 Ng7 58. Kg4
Ne8 59. Ne3 Nf6+ 60. Kh3 Kh5 61. Nf5 Ne8 $1 62. Ng3+ Kg6 63. Ne2 Kh5 64. Kg3
Nf6 65. Kf2 Ne8 66. Ng3+ Kg6 67. Ke2 Ng7 68. Kd1 Bc7 69. Ke2 Ne6 70. Be3 Ng7
71. Kf2 Bd8 72. Kg2 Ne8 73. Ne2 Kh5 74. Kh3 Nf6 75. Bd2 Ne8 76. Nc3 {White is
slightly better.} Nf6 77. Kg3 Kg6 78. Nd5 Nxd5 79. cxd5 Kh5 80. a4 Bf6 81. Kh3
{Weighted Error Value: White=0.08/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.14"]
[White "Pichot, Alan"]
[Black "Artemiev, Vladislav"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "2628"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,108,9,16,15,12,14,14,11,17,14,2,0,0,10,0,-5,0,0,-8,-7,-4,0,-6,-8,-8,
-4,-21,-4,-16,-18,-19,-21,-62,-47,-61,-54,-54,-45,-54,-46,-54,-67,-54,-75,-89,
-89,-75,-83,-109,-106,-114,-119,-126,-115,-239,-225,-229,-239,-215,-239,-231,
-212,-237,-237,-298,-298,-302,-298,-298,-297,-290,-289,-287,-506,-450,-413,
-500,-529,-535,-528,-522,-504,-484,-472,-451,-447,-444,-439,-1091,-1039,-968,
-922,-1154,-1124]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6.
Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Ne8 {C67: Ruy Lopez: Berlin Defence: 4
0-0 Nxe4.} 10. c3 d6 $5 {[%mdl 4] An interesting side line.} 11. Re1 d5 {
[#] The position is equal.} 12. Bf4 $146 ({Predecessor:} 12. Bd3 c6 13. Bf4 Bd6
14. Bxd6 Nxd6 15. Nd2 Bf5 16. Bxf5 Nxf5 17. Qb3 Qb6 18. a4 Qxb3 19. Nxb3 {
1/2-1/2 (39) Triapishko,A (2508)-Lysyj,I (2631) Sochi 2018}) 12... Bd6 13. Bxd6
(13. Be5 {feels hotter.} c6 14. Bd3 g6 15. Nd2 Ng7 16. Qb3) 13... Nxd6 14. Nd2
Bf5 15. Qf3 Qg5 16. Qe3 Qxe3 17. Rxe3 Rfe8 18. Rae1 Rxe3 19. Rxe3 f6 20. f3 Kf7
21. Kf2 g5 22. Bd3 Bxd3 23. Rxd3 $11 {[%mdl 4096] Endgame KRN-KRN} a5 24. Ke1
a4 25. Re3 c6 26. Kd1 f5 27. Re5 Kf6 28. g3 h5 29. Kc2 b5 30. Kd3 Rb8 31. Re2
f4 32. gxf4 gxf4 33. b3 Nf5 34. Re1 Ra8 35. Re5 {Loses the game.} (35. Re2 $17)
35... axb3 $19 36. axb3 h4 $1 37. h3 Ne3 38. Rh5 Nf5 {White must now prevent ..
.Kg6.} 39. Rh7 Rg8 40. Ra7 Rg3 41. c4 bxc4+ ({Weaker is} 41... Rxh3 42. Ra6 $17
) 42. bxc4 {[#] intending Ra6.} Ne7 $1 ({Less strong is} 42... Rxh3 43. Ra6 $17
) 43. cxd5 cxd5 44. Ne4+ dxe4+ 45. Kxe4 {Now Ra6+ and White clings on. KRN-KR}
Ng6 46. Ra6+ {[#]} Kg5 $1 {Black is clearly winning.} 47. Ra5+ Kh6 48. d5 Rg5
49. Kd4 Rg1 50. Ke4 Kg5 51. d6+ Kf6 52. Ra6 (52. Rd5 $142 Re1+ 53. Kd4) 52...
Re1+ 53. Kd5 Kf5 54. Ra4 Ne5 {Weighted Error Value: White=0.31/Black=0.01} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.15"]
[White "Svidler, Peter"]
[Black "Movsesian, Sergei"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2694"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,72,0,27,0,14,22,20,20,47,-13,15,20,20,0,25,22,30,26,22,7,45,39,44,50,
31,14,16,10,36,39,80,73,88,56,94,45,86,49,43,33,133,13,11,16,44,44,35,0,0,0,0,
0,8,8,8,8,8,8,8,8,8,8,6,8,8]} 1. e4 c6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 5. Nxd4 e6
6. c4 {B12: Caro-Kann: Advance Variation.} Nc6 (6... Bb4+ {is more complex.} 7.
Nc3 Ne7 8. Be2 Nbc6 9. O-O O-O) 7. Nc3 Bc5 {seems to push 7...Bb4 aside.} 8.
Nxc6 bxc6 9. Bd3 ({White should play} 9. Qg4 $14 Kf8 10. Bd3) 9... Ne7 10. O-O
Ng6 11. Na4 Be7 12. f4 Ba6 13. Be3 {[#]} O-O $146 ({Predecessor:} 13... dxc4
14. Be4 O-O 15. Qxd8 Rfxd8 16. Rfd1 Rd5 17. Bxd5 cxd5 18. b3 f6 19. exf6 Bxf6 {
0-1 (40) Balogh,C (2664)-Khenkin,I (2655) Germany 2013}) 14. Rc1 d4 15. Bd2 c5
16. Qh5 Bb7 17. b3 Qc7 18. Rce1 Rae8 19. Nb2 Qc6 {[%csl Gb7][%cal Rc6g2] [#]}
20. Re2 Qa6 21. Bb1 Bc6 22. Nd3 Qb7 23. f5 exf5 24. Rxf5 Be4 {[#]} (24... Bd7
$14) 25. Rff2 (25. Nxc5 $6 Bxc5 26. Bxe4 d3+ 27. Kh1 Qa6 $16) (25. Rf1 $1 $16)
25... Qa8 $1 $11 26. Re1 Bh4 27. g3 Bd8 28. Qe2 (28. e6 $5 fxe6 29. Rxf8+ Rxf8
30. Qe2 $11) 28... f5 {The position is equal.} 29. exf6 $1 Bxf6 30. Qh5 Be7 31.
Nxc5 Bxb1 32. Rxb1 Bxc5 33. Qxc5 Rxf2 34. Kxf2 Ne5 $1 {[%cal Re5d3]} ({Don't
play} 34... Re5 $6 35. Qxd4 Rf5+ 36. Bf4 $16 (36. Kg1 Ne5 $15)) 35. Qd5+ $1
Qxd5 36. cxd5 Ng4+ $1 {Weighted Error Value: White=0.18/Black=0.16} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.16"]
[White "Yilmaz, Mustafa"]
[Black "Eljanov, Pavel"]
[Result "1/2-1/2"]
[ECO "D20"]
[WhiteElo "2626"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,64,0,-6,-11,-11,0,-13,-9,-16,-10,-14,-22,-36,-39,-82,-11,-11,-7,-14,
-19,-13,-5,-2,0,-7,0,0,-7,-2,-2,-4,-3,-10,-4,-8,0,0,0,-1,0,1,6,0,0,0,0,0,8]} 1.
d4 d5 2. c4 dxc4 3. e4 c5 4. d5 Nf6 5. Nc3 e6 6. Bxc4 exd5 7. exd5 a6 8. a4 Bd6
9. Nf3 O-O 10. O-O Bg4 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3.} 11. h3
Bh5 12. Re1 Nbd7 13. a5 Qc7 14. Be2 Rfe8 15. Ra4 {[#]} Rad8 $146 ({Predecessor:
} 15... Re7 16. Be3 Rae8 17. Nd2 Bxe2 18. Rxe2 Ne5 19. Qb3 Rc8 20. Nc4 Nxc4 21.
Qxc4 Nd7 {1-0 (42) Crevatin,L (2171)-Warchol,K (2017) Chess.com INT 2021}) 16.
Nh4 b5 17. axb6 $1 $11 {The position is equal.} Nxb6 18. Rxa6 Bxe2 19. Rxe2 Qb7
20. Rxe8+ Rxe8 21. Ra1 Nbxd5 22. Nf3 Bf8 (22... Rd8 {looks sharper.} 23. Qc2
Be7 24. Nxd5 Nxd5 25. Bd2 h6) 23. Nxd5 Nxd5 24. Qa4 Rd8 25. Bg5 Rc8 26. Qc2 c4
27. Bd2 g6 28. Ra4 Nb6 29. Ra5 Nd7 30. Ra4 Qd5 31. Be3 Bg7 32. Qd2 Qxd2 {
Weighted Error Value: White=0.04/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.17"]
[White "Navara, David"]
[Black "Kravtsiv, Martyn"]
[Result "1/2-1/2"]
[ECO "D42"]
[WhiteElo "2691"]
[BlackElo "2625"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,72,20,18,16,15,18,0,0,0,0,0,0,0,0,-60,-62,-216,-216,-231,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-6,-2,-8,-8,-8,-8,-12,-8,-9,-9,-12,-9]} 1. c4 e6
2. Nc3 d5 3. d4 Nf6 4. Nf3 c5 5. e3 Nc6 6. cxd5 Nxd5 7. Bd3 Be7 8. O-O O-O 9.
a3 cxd4 10. exd4 b6 11. Qc2 Nf6 12. Rd1 h6 {[#] D42: Queen's Gambit Declined:
Semi-Tarrasch: 5 cxd5 Nxd5 6 e3 Nc6 7 Bd3 .} 13. Bf4 $146 ({Predecessor:} 13.
Be4 Nxe4 14. Qxe4 Qe8 15. Re1 Bd7 16. d5 exd5 17. Nxd5 Bd6 18. Qh4 Qd8 19. Qh5
Be6 20. Rd1 Bxd5 21. Qxd5 {1/2-1/2 (87) Vidit,S (2726)-Nepomniachtchi,I (2789)
chess24.com INT 2021}) 13... Bb7 14. Rac1 Rc8 15. d5 Nxd5 16. Nxd5 exd5 17. Qa4
Qd7 18. Nd4 {[#]} (18. Bb5 $11 Qg4 19. h3) 18... Qg4 $1 $15 19. Nxc6 $2 (19.
Ne2 $15) 19... Bxc6 $19 20. Qxa7 {[#]} Bxa3 21. bxa3 $11 {And now Be5 would
win.The position is equal.} Qxf4 22. Qxb6 Ba4 23. Rxc8 Rxc8 24. Qa6 Bd7 25. Qb7
Qa4 26. Rb1 Be6 27. Qb4 Qxb4 28. axb4 {[%mdl 4096] Endgame KRB-KRB} Rc3 29. Bf1
Bf5 30. Rd1 Be6 31. f4 Rb3 32. f5 Bxf5 {With the idea ...Be6.} 33. Rxd5 g6 34.
b5 Kf8 35. Kf2 Ke7 36. Be2 Bd7 {Weighted Error Value: White=0.20/Black=0.14}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.18"]
[White "Kuzubov, Yuriy"]
[Black "Van Foreest, Jorden"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2624"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,127,2,0,1,-1,0,0,-3,-1,-8,0,-2,-8,0,8,11,8,12,13,10,19,13,19,12,14,16,
27,14,29,-8,0,0,0,0,0,0,25,0,0,-25,-16,-21,81,54,55,-18,0,-4,-15,-16,-12,-25,
257,254,414,392,464,457,497,143,122,122,116,115,110,97,108,118,137,129,121,128,
128,128,304,168,169,177,184,116,149,107,87,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 Bf5
5. Nge2 e6 6. Ng3 {D10: Slav Defence: 3 cxd5 (without early Nf3) and 3 Nc3.}
Bg6 7. Bd3 Nbd7 8. O-O Bd6 {[#]} 9. Re1 $146 ({Predecessor:} 9. f4 Bxd3 10.
Qxd3 Qc7 11. e4 Nxe4 12. Ngxe4 dxe4 13. Nxe4 Be7 14. f5 exf5 15. Rxf5 {0-1 (36)
Adelberger,G-Rohrmueller,H Germany 2003}) 9... O-O 10. Bxg6 hxg6 11. e4 dxe4 (
11... dxc4 $2 12. e5 $18) 12. Ngxe4 Nxe4 13. Nxe4 Be7 14. Be3 Nf6 15. Ng5 Qa5
16. Qe2 Rfd8 17. h3 Ne8 18. Nf3 Nd6 19. Bf4 Nf5 20. Red1 Bf6 {[%cal Rf5d4]} 21.
Be5 Rd7 22. g4 Ne7 23. h4 Rad8 24. a3 Qa4 25. Re1 Nc8 (25... c5 $11) 26. Rac1
Bxe5 27. dxe5 ({White should try} 27. Qxe5 $14 Nd6 28. Qe2) 27... c5 28. Rc3
Ne7 29. Ng5 Rd1 30. Kg2 Nc6 $2 {[%mdl 8192] [#]} (30... Rxe1 $11 31. Qxe1 Rd4)
31. Qf3 $1 $18 {[%cal Rf3f7][%mdl 512]} R1d7 (31... Rxe1 32. Qxf7+ Kh8 33. Qxg6
Rg1+ 34. Kxg1 Qd1+ 35. Kh2 Qc2 36. Rxc2) (31... Nxe5 32. Rxe5 f6 33. Qxb7 (33.
Nxe6 fxe5 34. Nxd8 Rxd8 $16) (33. Rxe6 fxg5 34. Re7 Qc6 $18) 33... fxg5 34.
Rxg5 (34. Rxe6 gxh4 35. Rxg6 Qd7 $16) 34... R1d4 35. Rxg6 Qd7 36. Qxd7 R8xd7) (
31... Nxe5 32. Rxe5) 32. h5 {And now hxg6 would win.} gxh5 33. Qe4 {[%cal
Re4h7]} g6 34. gxh5 $2 (34. Qf4 $1 $18 {is the precise move to win.} Nd4 35.
Ne4) 34... Ne7 $16 35. hxg6 Nxg6 {[#]} 36. Nxe6 $1 {[%mdl 512]} fxe6 37. Rg3 ({
Avoid the trap} 37. Qxg6+ $2 Rg7 $19) 37... Rg7 {aiming for ...Rd4.} 38. Rxg6
Qc6 39. Rxg7+ Kxg7 40. Qxc6 bxc6 {[%mdl 4096] Endgame KR-KR} 41. Re3 a5 $2 (
41... Rd2 $16 {was called for.}) 42. a4 (42. Rf3 $142) 42... Rd2 {[#]} 43. b3
Rb2 44. Rg3+ ({White should play} 44. Rf3 $18) 44... Kh6 45. Rf3 Kg5 {[#]} 46.
Rf6 (46. Kf1 $1 $16) 46... Rxb3 $11 {The position is equal.} 47. Rxe6 Rc3 48.
Rf6 Rxc4 49. Kf3 {Hoping for Rf8.} Rxa4 50. Ke3 {Black must now prevent f4+.}
Ra3+ 51. Ke4 Ra4+ 52. Kd3 Rd4+ 53. Kc3 a4 54. f4+ Kg4 (54... Rxf4 55. Rxf4 Kxf4
56. e6 Kg5 57. e7 Kh4 58. e8=Q a3 59. Qxc6) 55. e6 Re4 56. f5 Re2 57. Kd3 Re1
58. Kc2 c4 {...a3 is the strong threat.} 59. Rf8 a3 {Strongly threatening ...
a2.} 60. f6 a2 ({But not} 60... Rxe6 $2 61. Rg8+ Kh5 62. f7 $18) 61. Ra8 Rxe6
62. f7 Rf6 63. Rxa2 Rxf7 {( -> ...Rf2+)} 64. Kc3 {Black escapes into a draw. 
Weighted Error Value: White=0.16/Black=0.25} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.19"]
[White "Wojtaszek, Radoslaw"]
[Black "Martirosyan, Haik M."]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2691"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,83,19,15,16,7,15,18,20,17,19,20,28,24,22,13,6,0,10,10,12,20,27,16,18,
27,23,22,20,32,15,24,35,29,56,20,56,22,25,27,47,45,95,103,98,107,118,102,187,
192,331,332,349,337,478,207,458,427,463,467,458,457,531,367,595,602,791,739,
1235,1181,1391,1306,2417,1610]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4
O-O 6. e3 Nbd7 7. Be2 dxc4 {D37: Queen's Gambit Declined: 5 Bf4.} 8. O-O Nb6 9.
Qc2 {9.a4 is the modern continuation.} Nfd5 {The position is equal.} 10. Bg3
Bd7 {[#]} 11. Ne4 $146 ({Predecessor:} 11. Ne5 Rc8 12. a4 a5 13. Nxc4 Nb4 14.
Qb3 Nxc4 15. Bxc4 Bc6 16. Rad1 Bd5 17. e4 Bxc4 18. Qxc4 {1-0 (72) Brousek,J 
(2270)-Slyusar,V (2131) ICCF email 2017}) 11... Nb4 12. Qb1 Bc6 13. a3 Bxe4 14.
Qxe4 N4d5 15. Rfc1 c5 16. dxc5 Bxc5 17. Bxc4 Nxc4 18. Rxc4 Bd6 19. Rac1 Bxg3
20. hxg3 ({Much weaker is} 20. fxg3 Qb6 $17) 20... h6 21. Qe5 b5 22. Rc5 b4 23.
Nd4 {Black must now prevent Nxe6!} Qd7 {[#]} 24. Nf5 $1 {[%csl Gf5][%cal Re5g7]
} f6 25. Qe4 bxa3 26. bxa3 Rf7 {White now steadily converts the win.} 27. Nd4
Re8 28. Qc2 Nb6 29. Qb3 e5 (29... Nc8 $16 {was worth a try.}) 30. Nc6 $18 Kf8 {
[#]} (30... Qg4 $142 31. Ra5 Kf8) 31. a4 $1 {[%cal Ba3a4,Ba4a5][%mdl 32]} Nc8
32. Rd1 Qg4 (32... Nd6 $142 33. Rcc1 f5) 33. Rc4 $40 {[%mdl 128] White attacks
with force.} (33. f3 $142 Qxg3 34. Nd8) 33... Qe2 (33... e4 {was called for.}
34. Rd8 Rb7 35. Rxe8+ (35. Qxb7 Rxd8 36. Qb4+ Kg8 $16) 35... Kxe8 36. Rxe4+ (
36. Qxb7 Qd1+ 37. Kh2 Qh5+ 38. Kg1 Qd1+ 39. Kh2 Qh5+ 40. Kg1 Qd1+ $11) 36...
Qxe4 37. Qxb7 {[%mdl 64] Double Attack} Qe6 38. Nxa7 Nxa7) 34. Nd8 Nb6 35. Rcc1
{[%csl Gd8][%cal Rb3f7]} Rfe7 36. a5 Na8 37. Nb7 Qh5 $2 (37... Qg4 38. f3 Qe6)
38. Nd6 {White is clearly winning.} Rd8 39. Qb4 f5 40. Rd2 Qg4 41. Rc4 Qg6 {[#]
} 42. Nxf5 $1 {[%mdl 576] Pin, Discovered Attack.  Weighted Error Value:
White=0.18/Black=0.44} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.20"]
[White "Hovhannisyan, Robert"]
[Black "Korobov, Anton"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2622"]
[BlackElo "2690"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,60,10,-1,31,19,50,64,70,69,59,60,62,46,70,67,69,75,61,19,29,32,15,22,
16,16,30,0,0,0,22,-6,0,0,0,-12,0,-8,0,-7,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3.
Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. a4 b4 9. Nd5 O-O {C84:
Closed Ruy Lopez: Unusual White 6th moves.} 10. d4 Rb8 11. dxe5 Nxe5 {White is
slightly better.} 12. Nxe5 dxe5 {[#]} 13. Nxf6+ $146 ({Predecessor:} 13. Qe2
Nxd5 14. Bxd5 a5 15. Be3 Bb7 16. Rad1 Qc8 17. b3 Bd6 18. Bxb7 Qxb7 19. Qc4 {
1/2-1/2 (37) Sardy,P (2340)-Suta,A (2239) Balatonlelle 2018}) 13... Bxf6 14.
Be3 Qe7 15. Qe2 Bg5 16. Bxg5 Qxg5 17. a5 Bg4 18. f3 Bd7 19. Rfd1 Bb5 20. Qf2
Rbd8 21. c4 bxc3 {The position is equal.} 22. bxc3 {[%cal Bb2c3,Bc3c4][%mdl 32]
} h5 23. c4 Bd7 24. c5 Bb5 25. h4 Qe7 (25... Qh6 {looks sharper.} 26. Kh2 Qf6
27. Rxd8 Rxd8 28. Rd1 Rxd1 29. Bxd1 Qf4+) 26. Rxd8 Rxd8 27. Rd1 $1 Rxd1+ 28.
Bxd1 Qd7 29. Be2 Qc6 {[#] White must now prevent ...Bxe2.} 30. Kh2 g6 {
Weighted Error Value: White=0.06/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.21"]
[White "Kryvoruchko, Yuriy"]
[Black "Onyshchuk, Volodymyr"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2686"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,65,5,30,17,30,24,31,38,32,33,43,36,43,25,39,34,55,52,77,75,93,85,69,
68,90,80,80,7,25,21,35,7,14,9,31,0,0,-193,39,28,28,-74,-91,-69,-54,-83,-79,
-169,0,0,0,0,626,627,637,635,595,595]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 e6 5.
Nb3 h6 6. Nf3 {B12: Caro-Kann: Advance Variation.} a5 7. a4 Nd7 8. Be2 {
White is slightly better.} Ne7 9. O-O g5 10. Ne1 c5 11. dxc5 {[#]} Bg7 $146 ({
Predecessor:} 11... Nc6 12. Bb5 Ncxe5 13. f4 Nc6 14. Nf3 Qc7 15. Nfd4 Nxd4 16.
Qxd4 Rh7 17. fxg5 hxg5 18. Rxf5 exf5 19. Bxg5 {1-0 (33) Hess,R (2571)-Krush,I 
(2444) Saint Louis 2017}) 12. f4 gxf4 13. Nd3 Bxd3 14. Bxd3 Nxe5 15. Bb5+ (15.
Rxf4 $6 O-O $11) 15... Kf8 16. Bxf4 N7g6 17. Bg3 h5 18. Nd4 (18. h3 $16) 18...
Qe7 $11 19. Kh1 Kg8 20. Bf2 Rc8 21. Qd2 Rxc5 22. Qxa5 Ng4 23. Qb4 $2 (23. Bg1
$11) 23... Qc7 $2 (23... Nxf2+ $19 24. Rxf2 Qh4 $1 25. Qxc5 Bxd4 26. Qc8+ {
[%mdl 64] Double Attack} Kg7 27. Rxf7+ Kxf7 28. Rf1+ Kg7 29. Qxe6 Be5 30. Rf7+
(30. h3 $2 Qg3 $19) 30... Kh6) 24. Bg3 $14 Be5 25. Be8 (25. Ra3 $11) 25... Rc4
$17 26. Qd2 Rh7 ({Reject} 26... Rxd4 $6 27. Qxd4 $1 Bxd4 28. Bxc7 $14) 27. Nxe6
{[#]} Qe7 {[%cal Re7e6]} ({Don't play} 27... fxe6 $6 28. Bxg6 Rg7 29. Qg5 $11)
28. Ng5 (28. Qxd5 $17 Ne3 29. Qd3 Nxf1 30. Rxf1 Qxe6 31. Bd7) 28... Qxe8 $2 (
28... Rd4 $19 29. Qc1 Bxg3 30. hxg3 Qxe8 31. Nxh7 Kxh7) 29. Nxh7 $11 {Hoping
for Ng5.} Bxg3 30. Qxd5 Kxh7 $2 {[%mdl 8192]} (30... N6e5 $11 31. Nf6+ Nxf6 32.
Rxf6 Rh4) 31. Qxc4 $18 {White is clearly winning.} Nf2+ {[#]} 32. Rxf2 $1 {
[%mdl 64] Clearance} Bxf2 33. Rf1 {Weighted Error Value: White=0.31/Black=0.48}
1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.22"]
[White "Brkic, Ante"]
[Black "Matlakov, Maxim"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2621"]
[BlackElo "2682"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,63,38,52,10,10,10,18,14,21,20,17,17,16,0,8,7,12,12,12,14,15,14,138,
121,109,134,104,103,89,100,95,92,93,79,88,88,185,190,312,324,285,281,335,331,
379,379,437,435,417,401]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5
6. Bd3 Bf5 7. O-O Be7 8. Re1 O-O 9. Nbd2 {[%cal Rd2e4,Bb1d2,Bd2f1,Bf1h2][%mdl
32] is the new trend. C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.
} Nd6 $1 10. Nf1 Bxd3 11. Qxd3 {The position is equal.} c6 12. Bf4 Na6 13. h4
Nc7 14. Ng5 {[%csl Gg5][%cal Rd3h7]} g6 {[#]} 15. Nh2 $146 ({Predecessor:} 15.
Ne3 Qd7 16. h5 Nce8 17. Nf3 Ng7 18. Ne5 Qd8 19. Bh6 Bg5 20. N3g4 gxh5 21. Bxg7
Kxg7 {1/2-1/2 (45) So,W (2770)-Duda,J (2743) chess24.com INT 2021}) 15... f6
16. Ne6 Nxe6 17. Rxe6 Qd7 18. Rae1 Ne4 {[#]} (18... Rae8 $1 $11) 19. Rxe7 $1
$16 {[%mdl 512]} Qxe7 {[#]} 20. f3 $1 f5 21. Bg5 $36 {[%mdl 2048] White has
strong initiative.} Qb4 {[%mdl 64] Double Attack} 22. c3 Qxb2 {( -> ...Qf2+)}
23. fxe4 dxe4 ({Don't blunder} 23... fxe4 $2 24. Qg3 $18) 24. Qc4+ Rf7 25. a4 {
[%mdl 1024] White has strong compensation.} Qa3 {[#]} (25... Qb6 $16 {might
work better.}) 26. Rb1 $1 $18 {[%cal Be1b1,Bb1b7,Bb7b5][%mdl 32]} Qd6 (26... b6
$142) 27. Rxb7 $1 Qd5 28. Qa6 c5 29. Rb5 Rc7 30. Bf4 Rc6 31. Qb7 {Bh6 would
kill now.} Rd8 32. Qxa7 {Weighted Error Value: White=0.02/Black=0.22} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.23"]
[White "Gelfand, Boris"]
[Black "Kollars, Dmitrij"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2680"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,124,8,0,0,0,-21,0,0,0,0,0,-2,0,0,20,0,8,9,5,0,0,0,13,7,6,-32,0,0,0,0,
0,0,10,0,27,0,0,0,0,0,7,-48,0,0,0,0,0,-270,-273,-270,-274,-273,-268,-266,-277,
-268,-257,-264,-268,-291,-293,-311,-301,-279,-208,-369,-369,-319,-282,-287,
-282,-262,-245,-347,-332,-939,-934,-1239,-1074,-1372,-1187,-5804,-6350,-1279,
-1045,-1074,-968,-6111,-6350,-3956,-4686,-4352,-3618,-3242,-12847,-12845,
-29936,-29936,-12831,-6637,-6842,-29943,-29947,-29937,-29946,-9512,-5381,
-29968,-29969,-29964,-29969,-29975,-29976,-29975,-29977,-29977,-12790]} 1. c4
e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bb4 5. d3 d6 6. Be2 {A28: English Opening: Four
Knights Variation.} O-O 7. O-O h6 8. a3 {The position is equal.} Bxc3 9. bxc3
Nh7 10. Be3 f5 11. exf5 Bxf5 12. d4 {[#]} e4 $146 ({Predecessor:} 12... Qf6 13.
Ne1 Rae8 14. Bf3 e4 15. Be2 Qe7 16. Rb1 Bc8 17. Bg4 Na5 18. Bxc8 Rxc8 {0-1 (36)
Harrington,J-Hall,D (2069) Swansea 2006}) 13. Nd2 Nf6 14. g4 Bg6 15. Kh1 Qe7
16. Rg1 Nh7 $1 17. Qb3 Nd8 (17... Na5 $5 {[%cal Ra5b3]} 18. Qb4 b6 $11) 18. c5+
Kh8 19. cxd6 cxd6 20. Bc4 Rc8 21. Rae1 Bf7 {Threatens to win with ...Rxc4!} 22.
Bxf7 Nxf7 23. Rg3 Nfg5 24. Qd5 Rce8 25. h3 ({Better is} 25. c4 $11) 25... Rf7 (
25... Nf3 $5 26. Re2 (26. Nxf3 Nf6 $17) 26... Nf6 $15) 26. Kg1 Qf8 27. Bxg5
Nxg5 28. h4 $2 {[%mdl 8192] White is on the road to losing.} (28. Re2 $11 {
and White stays safe.}) 28... Rxf2 $19 29. hxg5 {Black must now prevent Nc4.}
Qf4 {[%mdl 64] Double Attack} (29... Rxd2 30. Rf1 $11) 30. Ree3 {[%cal Rd2e4]}
Rxd2 31. Qf5 Rf8 ({Resist} 31... Qxg5 32. Qxg5 hxg5 33. Rgf3 $19) ({Stronger
than} 31... hxg5 32. Rh3+ Kg8 33. Qd5+ Qf7 34. Rh8+ $3 {[%mdl 512]} Kxh8 35.
Qxf7 Rd1+ 36. Kf2 Rd2+ 37. Ke1) ({Don't play} 31... Rd1+ 32. Kg2 $19) 32. Qxf4
Rxf4 33. gxh6 gxh6 {[%mdl 4096] Endgame KRR-KRR} 34. Re1 Kg7 35. Rb1 b6 36. Rb5
Rd3 37. Rg2 (37. Rxd3 exd3 38. Rb1) 37... Rxc3 38. Rd5 Rc6 39. Kh2 Kg6 40. a4
a6 41. Kg3 (41. Rg3 {is a better defense.}) 41... Rf3+ 42. Kh4 $2 (42. Kh2)
42... e3 43. Re2 b5 44. axb5 axb5 45. Rxb5 {[#]} Rc1 $1 {[%cal Rc1h1] ( -> ...
Rh1+)} 46. Rbb2 Rh1+ 47. Rh2 Rxh2+ 48. Rxh2 {KR-KR} Rf4 49. Kg3 Rxd4 50. Kf3 {
[#]} d5 $1 51. Kxe3 Rxg4 52. Ra2 Re4+ 53. Kf3 h5 54. Ra8 Re5 55. Rg8+ Kf7 56.
Ra8 Rf5+ 57. Ke3 Kg7 58. Rb8 h4 {Black mates.} 59. Rb4 Rh5 60. Kf2 h3 61. Kg1
h2+ 62. Kh1 Kf6 {Weighted Error Value: White=0.54/Black=0.05} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.24"]
[White "Yakubboev, Nodirbek"]
[Black "Mamedov, Rauf"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "2621"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,147,31,43,27,36,19,43,39,26,33,57,56,46,48,57,36,89,93,168,151,189,
195,173,187,157,106,101,104,99,109,96,91,166,160,155,158,166,35,44,50,45,6,4,0,
0,0,0,-29,-28,-34,0,0,6,11,16,0,62,63,196,203,192,192,195,194,201,206,227,204,
209,209,203,201,204,175,196,204,189,195,196,203,200,195,210,208,203,203,299,
292,291,289,433,430,425,429,490,490,486,481,479,475,453,453,426,0,420,420,420,
414,418,417,408,409,402,399,394,367,512,505,477,444,488,361,29972,29970,29978,
5210,29973,29974,29974,29975,29973,29975,5197,677]} 1. d4 Nf6 2. c4 g6 3. Nc3
Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. O-O Bg4 8. d5 a5 9. Be3 {E94: King's
Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves.} Na6 10. a3 $5 {
[%mdl 4] [#] A promising side line.} Nh5 $146 ({Predecessor:} 10... Bxf3 11.
Bxf3 Nd7 12. Rb1 f5 13. b4 f4 14. Bd2 h5 15. Na4 axb4 16. axb4 Rf7 17. Bc3 Bf8
18. c5 dxc5 19. bxc5 Naxc5 20. Nxc5 Bxc5 21. Rxb7 {1/2-1/2 (108) Esipenko,A 
(2682)-Hakobyan,A (2588) Lichess.org INT 2020}) 11. h3 {White is slightly
better.} Bd7 12. Re1 Qe8 13. Nb5 Qd8 14. b4 Nf4 15. Bf1 (15. bxa5 Nc5 $11)
15... h6 (15... f5 $14) 16. c5 $16 Qe8 (16... axb4 $16 17. axb4 (17. cxd6 Bxb5
18. Bxb5 Qxd6 $14) 17... Bxb5 18. Bxb5 Nxb4) 17. a4 $18 Qe7 18. cxd6 ({Worse is
} 18. bxa5 Nxc5 19. Bxc5 dxc5 $11) 18... cxd6 19. bxa5 Nc5 20. Rc1 (20. Bxc5
$142 dxc5 21. Rc1) 20... Rxa5 $16 21. Bxc5 dxc5 22. d6 Qd8 23. Rxc5 Ne6 (23...
Ra6 $16 {was necessary.}) 24. Rxe5 $18 Qb6 25. Rd5 Rfa8 26. Nc7 ({Better is} 
26. e5 $18) 26... Nxc7 $14 27. dxc7 Rxd5 28. exd5 (28. Qxd5 {is interesting.}
Qxc7 29. Bb5 Be6 30. Qd2 Rc8 31. Nd4) 28... Qxc7 29. d6 Qc5 30. Re4 Bc6 31. Rc4
Qa3 32. Rf4 {next Bc4 is good for White.} Rd8 (32... g5 $5 {[%cal Rg5f4]} 33.
Rf5 Qxa4 34. Qxa4 Rxa4 $15) 33. Bc4 Rxd6 34. Bxf7+ Kh7 35. Qe1 Bxa4 (35... g5
$11 36. Rc4 Qa1) 36. Kh2 $1 {And now Qe7 would win.} Rf6 {White now steadily
converts the win.} (36... Ra6 $1 $14) 37. Rxf6 $18 Bxf6 38. Qe4 Kh8 39. Qxg6 {
[%cal Rg6h6]} Bg7 40. Bd5 {Threatening mate with Ng5!} Qe7 41. Qb6 Bc6 42. Bxc6
Qd6+ 43. g3 bxc6 44. Qa5 c5 45. Qa8+ Kh7 46. Qe4+ $1 Qg6 47. Qc4 Qf6 48. Qc2+
$1 Kg8 49. Nh4 Bf8 50. Nf5 h5 (50... Qf7 {keeps fighting.} 51. Kg1 Qd5) 51. h4
Qf7 52. Kg1 Qh7 (52... Qe6 $142 53. Ne3 Qf7) 53. Qe4 Qf7 54. Ne3 Bg7 55. Nd5
Kh8 56. Kg2 Kg8 57. Ne7+ Kh8 58. Ng6+ Kg8 59. Ne7+ Kh8 60. Nf5 Bf8 61. Qe5+ Kg8
62. Ne3 Kh7 63. Nd5 Bg7 {[#]} 64. Qd6 $1 ({Weaker is} 64. Qe4+ Qg6 $18) 64...
Bd4 65. Nf4 Qb7+ {[#]} 66. f3 $1 Qf7 67. Ne6 {Threatens to win with Ng5+.} Qb7
68. Qf8 {aiming for Qf5+.} Be3 $2 (68... Qd5 $18) 69. Qf5+ Kh6 70. Qe5 (70. Nf8
$142 Kg7 71. Qh7+ Kxf8 72. Qxb7 Bd4 73. Qh7 Bf6 74. Qxh5 Bd8 75. Qxc5+ Be7 76.
Qf5+ Ke8 77. h5) 70... Bd4 71. Qg5+ Kh7 72. Qxh5+ Kg8 73. Qg6+ Kh8 74. Ng5 {
Weighted Error Value: White=0.16/Black=0.16} (74. Qe8+ $142 Kh7 75. Nxd4) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.25"]
[White "Adhiban, B.."]
[Black "Sethuraman, S.P.."]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2672"]
[BlackElo "2620"]
[Annotator "TA"]
[PlyCount "139"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,139,15,12,33,0,3,-9,4,6,14,16,8,8,17,15,14,14,27,33,38,13,16,0,37,25,
42,40,43,33,32,8,35,24,20,0,33,33,48,48,48,48,48,40,40,32,32,29,29,29,29,29,47,
47,39,39,96,96,96,96,96,96,96,96,96,96,96,96,96,96,96,96,96,96,96,96,96,96,96,
82,82,82,82,82,82,82,82,82,82,0,82,82,82,82,82,82,82,82,82,82,82,82,82,82,82,
82,82,82,82,82,82,82,82,0,82,0,82,82,82,82,82,82,82,0,82,0,82,0]} 1. e4 {
Ftacnik,L} e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2 Qe7 6. d3 Nf6 7. Nc3
Qxe2+ 8. Bxe2 g6 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} 9.
Nd4 Bg7 10. h3 a6 {[#] The position is equal.} 11. Be3 $146 ({Predecessor:} 11.
g4 Bd7 12. Bf3 Nc6 13. Nxc6 Bxc6 14. Bxc6+ bxc6 15. Bd2 h5 16. g5 Nd5 17. Nxd5
cxd5 18. O-O-O Kd7 {1/2-1/2 (18) Shirov,A (2710)-Kramnik,V (2790) Cazorla 1998
CBM 065 [Ftacnik,L]}) 11... Bd7 12. Bf3 Nc6 13. Kd2 Nxd4 14. Bxd4 O-O-O 15.
Rae1 Be6 16. b4 Rhe8 17. h4 h5 18. a3 (18. a4 {with more complications.} Bh6+
19. Be3 Bxe3+ 20. Rxe3 d5 21. Ree1) 18... Bh8 (18... Bh6+ {keeps more tension.}
19. Be3 Bg7 20. Bd4) 19. g3 Nd7 20. Bxh8 Rxh8 21. Bg2 Nf6 22. Re2 Rde8 23. Rhe1
c6 24. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} Kc7 (24... a5 $5) 25. a5 Kd8 26. Ne4
Nxe4+ 27. Rxe4 Kd7 28. c4 Rb8 29. c5 d5 30. Re5 Rbe8 31. d4 f6 32. R5e3 Re7 33.
Bf1 Rhe8 34. Bd3 f5 (34... Bf7 $14) 35. Re5 Bf7 36. f4 Re6 37. Ke3 R6e7 38. Kf2
Re6 39. Bc2 R6e7 40. Ra1 Ra8 41. Bb3 Be6 42. Ra3 Ree8 43. Ba2 Re7 44. Bb1 Bf7
45. Kg2 Re6 46. Rae3 Rae8 47. Kf2 R6e7 48. Ke2 Re6 49. Kd2 Rg8 50. Bd3 Rh8 51.
Bb1 Rg8 $1 52. Bc2 Rh8 53. Ba4 Ke7 54. Kc3 Ra8 55. Bc2 Kf6 56. Bd3 Ke7 57. Kd2
Kf6 58. Ke2 Ke7 59. Kf2 Rh8 60. Kg2 Kf6 61. Bc2 Ke7 62. Ra3 Ra8 63. Rae3 Rh8 $1
64. Bd3 Kf6 $1 65. Re1 Ke7 66. Rb1 Ra8 67. Rb2 Kf6 68. Rb1 Ke7 $1 69. Rb2 Kf6
$1 70. Rb1 {Weighted Error Value: White=0.05/Black=0.04} ({Better is} 70. Bf1
$16) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.26"]
[White "Antipov, Mikhail Al."]
[Black "Predke, Alexandr"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2619"]
[BlackElo "2666"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,88,31,34,24,29,18,18,31,22,35,50,15,18,15,39,10,40,35,30,0,12,-20,
-20,-29,-1,-8,0,0,0,0,1,-12,-5,-30,-25,-24,-18,-7,-8,-18,-21,-17,0,0,0,-7,-10,
-7,-7,-7,0,-7,-20,-69,-69,-78,-85,-78,-82,-246,-183,-245,-250,-224,-233,-233,
-224,-233,-172,-717,-700,-846,-835,-1630,-1508]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
4. Ba4 Nf6 5. d3 d6 6. c3 Be7 7. O-O O-O 8. Re1 Re8 9. Nbd2 {C84: Closed Ruy
Lopez: Unusual White 6th moves.} Bf8 10. a3 {[#]} d5 $146 ({Predecessor:} 10...
b5 11. Bb3 Be6 12. Bxe6 Rxe6 13. a4 Rb8 14. axb5 axb5 15. Ra6 Qd7 16. Qb3 Ree8
{1/2-1/2 (37) Karzev,E (2145)-Frolochkin,V (2305) St Petersburg 2009}) 11. b4 {
The position is equal.} dxe4 12. dxe4 Bd7 13. Bb3 Be6 14. Bxe6 Rxe6 15. Bb2 Nb8
16. Qb3 Nbd7 17. Ng5 Re7 18. Rad1 h6 19. Ngf3 Re6 20. c4 a5 21. c5 axb4 22.
axb4 b6 23. Nc4 bxc5 24. Nfxe5 Qe8 {[%cal Rd7e5]} 25. Nxd7 Nxd7 26. Qd3 Nb6 27.
bxc5 Na4 28. Bd4 Rd8 29. Qc2 Nxc5 30. f3 Ra6 31. Be3 Rda8 32. Qe2 Qe6 33. Rd2
Ra1 {And now ...Rxe1+ would win.} 34. Rc2 Nb3 {...Rxe1+ is the strong threat.}
35. Rxa1 Rxa1+ 36. Kf2 Be7 $1 {[%cal Re7h4] Threatens to win with ...Bh4+.} 37.
g4 $2 {This costs White the game.} (37. Nd2 $17 {was the only chance.}) 37...
h5 $1 $19 38. h3 (38. Kg3 $142) 38... hxg4 39. hxg4 Qf6 40. g5 {[#]} Qg6 41.
Ne5 Qh5 $40 {[%cal Rh5h2][%mdl 128] White is in trouble.} 42. Ng4 (42. f4 Qh2+
43. Kf3 Qh3+ 44. Kf2) 42... Bd6 {( -> ...Qh4+). Black is clearly winning.} 43.
f4 Qh4+ 44. Kg2 {[#]} Bxf4 $1 {[%csl Gf4][%cal Rh4g3][%mdl 512] Weighted Error
Value: White=0.53/Black=0.03} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.27"]
[White "Sargissian, Gabriel"]
[Black "Praggnanandhaa R"]
[Result "1/2-1/2"]
[ECO "E49"]
[WhiteElo "2664"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,87,0,-22,0,0,-18,-11,0,0,0,-7,-12,-10,0,0,47,79,66,84,59,56,64,2,0,0,
0,0,0,-2,-5,-29,-28,-108,-81,-114,-125,-118,-113,-112,-62,-74,0,-110,-117,-140,
-118,-117,-117,-114,-7,-33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6
2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. a3 Bxc3+ 7. bxc3 dxc4 8. Bxc4 c5 9.
Ne2 Qc7 10. Ba2 b6 {E49: Nimzo-Indian: Rubinstein: 5 Bd3 d5 6 a3 Bxc3+ 7 bxc3.}
11. O-O Ba6 12. Bb2 $1 {[%mdl 4] is now more promising than 12.Re1.} Nc6 13.
Rc1 Rfd8 14. c4 cxd4 15. exd4 Na5 {[%cal Ra6c4]} 16. d5 Bxc4 (16... Nxc4 $2 17.
Bxf6 gxf6 18. Qa4 $18) 17. Bxc4 Nxc4 18. Bxf6 gxf6 19. Ng3 $1 {Hoping for Qg4+.
} (19. Qd4 exd5 20. Qxf6 Qe5 $15) 19... exd5 {[#]} 20. Qg4+ $146 (20. Qf3 $14
Qe5 21. Nf5) ({Predecessor:} 20. Nh5 Kh8 21. Re1 Qd6 22. Qd4 Ne5 23. Qf4 Rg8
24. Nxf6 Rg6 25. Nh5 Re8 26. Qd4 {1-0 (43) Parligras,M (2591)-Gavrilescu,D 
(2477) Reykjavik 2021}) 20... Kh8 $11 21. Rfe1 {And now Qh4! would win.} Rg8
22. Qd4 Qd8 23. Nf5 Ne5 {White must now prevent ...Nf3+.} (23... Nxa3 $6 24.
Ne7 $16) 24. Kh1 Rc8 25. Rxc8 (25. f4 $11 {remains equal.} Nc6 26. Qd3) 25...
Qxc8 $17 26. Ne7 Qg4 {[%csl Gg8][%cal Rg4g2]} 27. Qxd5 Re8 28. Nc6 {[%cal
Rc6e5]} Qf4 (28... Qc8 {keeps more tension.} 29. Qd6 Kg7 30. Nxe5 Rxe5 31. Rd1
Qc5) 29. f3 Rc8 (29... Kg7 $17 30. g3 Nd3 $1 {[%mdl 512]}) 30. Nxe5 {[#]} (30.
Ne7 $11 {keeps the balance.} Rf8 31. h3) 30... Qxe5 $1 $11 {[%cal Re5e1][%mdl
4608] Endgame KQR-KQR} 31. Qd1 (31. Qxe5 fxe5) 31... Qb2 32. Qd6 {[#]} Qc3 $1 {
[%cal Rc3e1]} 33. Rd1 {[#]} Re8 ({Black should play} 33... Qe5 $1 $17 {[%cal
Re5d6] ( -> ...Qxd6)} 34. Qd7 Rc7) 34. h4 (34. h3 {with more complications.}
Qe5 35. Qxe5 Rxe5 36. Rd7 Ra5 37. Rxf7 Rxa3 38. Rxf6 Rb3 39. Rf7) 34... Qe5 (
34... a6 {is more complex.} 35. a4 Qe5 36. Kg1 Qxd6 37. Rxd6 Re6) 35. Qxe5 {
The position is equal.} Rxe5 {KR-KR} 36. Rd7 Ra5 37. Rxf7 Rxa3 38. Rxf6 Kg7 39.
Rc6 b5 40. Rc7+ Kg6 41. h5+ Kh6 42. Rc6+ Kg7 43. Rc7+ Kh6 44. Rc6+ {Weighted
Error Value: White=0.15/Black=0.17} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.28"]
[White "Ganguly, Surya Shekhar"]
[Black "Sjugirov, Sanan"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2617"]
[BlackElo "2663"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,45,30,24,29,23,23,23,23,23,15,18,18,25,16,12,16,-8,-3,-4,-4,0,8,0,0,
0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3
Bb7 7. d3 Bc5 8. Nc3 O-O {C78: Ruy Lopez: Archangelsk and Möller Defences.} 9.
Nd5 Na5 10. Bg5 {White wants to play Nxf6+.} Bxd5 {White has an edge.} 11. Bxd5
c6 12. Bb3 h6 13. Bh4 {[#]} d6 $146 ({Predecessor:} 13... Re8 14. Re1 Nxb3 15.
axb3 g5 16. Bg3 d6 17. h3 a5 18. Qd2 Bb6 19. Bh2 Ra7 {1/2-1/2 (48) Wastel,H 
(2234)-Richter,W (2321) ICCF corr 2010}) 14. Qd2 {The position is equal.} Bb6
15. Kh1 Qe7 16. Ng1 Nxb3 17. axb3 g5 18. Bxg5 hxg5 19. Qxg5+ Kh8 20. Qh4+ Kg7 {
Threatens to win with ...Rh8.} 21. Qg5+ Kh8 22. Qh4+ Kg7 {Hoping for ...Rh8.}
23. Qg5+ {Not much happened in this game.  Weighted Error Value: White=0.03/
Black=0.01} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.29"]
[White "Grandelius, Nils"]
[Black "Indjic, Aleksandar"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2662"]
[BlackElo "2612"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,84,17,18,18,18,24,4,18,13,13,21,14,14,11,12,19,19,24,16,20,11,12,14,
31,27,33,22,21,25,31,30,26,16,25,0,21,0,1,0,0,0,0,-14,14,12,15,10,9,3,31,31,37,
30,37,15,36,39,48,53,40,40,40,40,41,41,41,40,41,28,43]} 1. e4 e5 2. Nf3 Nf6 3.
Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Bf4 Nc6 8. Qd2 Be6 9. O-O-O Qd7
{C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} ({Don't go for} 
9... Bxa2 $2 10. b3 $18) 10. Kb1 a6 11. Be2 O-O-O {The position is equal.} 12.
Ng5 Bxg5 13. Bxg5 f6 14. Be3 {[#]} h5 $146 ({Predecessor:} 14... Qf7 15. b3 d5
16. Rhe1 Bf5 17. Bc5 Rhe8 18. g4 Bg6 19. f3 h5 20. h3 hxg4 21. hxg4 {1/2-1/2 
(35) Llaneza Vega,M (2455)-Moreno Ruiz,J (2482) Madrid 2007}) 15. b3 Bg4 16. f3
Bf5 17. Rhe1 Rde8 18. Bf2 Qf7 19. Kb2 Qg6 20. Bf1 Re5 21. Bg3 Rxe1 22. Rxe1 Re8
23. Rxe8+ Qxe8 24. Qd5 Ne7 25. Qd2 (25. Qc4 {is interesting.} Kd8 26. Bf2 Qg6
27. Qe2 a5 28. a4) 25... Nc6 26. c4 h4 {[#]} 27. Qe1 Qg6 28. Bxh4 Bxc2 29. Qd2
Bf5 30. g4 Be6 31. Bg3 Qf7 32. h4 d5 33. cxd5 Bxd5 34. Qe3 a5 35. Bb5 Qd7 36.
Be1 Bf7 37. Bc3 Qd6 38. Bxc6 Qxc6 39. Bxa5 Bd5 40. f4 Bf3 41. g5 fxg5 42. fxg5
g6 {Weighted Error Value: White=0.04/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.30"]
[White "Sadhwani, Raunak"]
[Black "Cheparinov, Ivan"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2609"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,61,11,19,25,20,26,26,35,33,47,39,41,8,8,17,17,18,35,18,36,11,23,8,15,
0,0,0,20,-41,-45,-66,-62,-68,-68,-58,-48,-53,-52,-53,-18,-25,-16,-27,-30,-28,0,
0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. O-O O-O 7. Bg5 {
7.Re1 is setting a new trend.} h6 8. Bh4 a5 {C54: Giuoco Piano: 4 c3 Nf6, main
lines with 5 d4 and 5 d3.} 9. Re1 g5 10. Bg3 Ba7 {White has an edge.} 11. Na3
g4 {[#]} 12. Bh4 $146 ({Predecessor:} 12. Nh4 Nh5 13. Nc2 Qg5 14. Ne3 Bxe3 15.
Rxe3 a4 16. Re1 Be6 17. b3 axb3 18. Bxe6 fxe6 19. Qxb3 Nd8 20. d4 Kh7 21. Qc4
Rf7 22. Rf1 b6 {1/2-1/2 (22) Martin Martin,O (2457)-Straka,Z (2543) ICCF email
2018}) 12... Kg7 13. Nd2 Ne7 $1 {[%cal Re7g6] White should prevent ...Ng6.} 14.
Bxf6+ Kxf6 15. d4 Ng6 16. Nf1 Kg7 17. Nc2 Qg5 18. Nce3 h5 19. Ng3 Ne7 20. Qd2 {
Black must now prevent Nef5+!} h4 21. Nef5+ (21. Ngf5+ $11 Nxf5 22. Nxf5+ {
[%mdl 64] Discovered Attack} Kg6 23. Qd3) 21... Kf6 $1 $15 22. dxe5+ dxe5 23.
Qxg5+ Kxg5 24. Nxe7 hxg3 25. hxg3 Be6 {Strongly threatening ...Rh8.} 26. b3 c6
27. Rad1 Rad8 (27... Rae8 $5 28. Nf5 $8 Bxf5 29. exf5 Rd8 $11) 28. Kf1 Bc5 29.
Nf5 $1 {[%mdl 64] [#] Decoy} Bxf5 30. exf5 Kxf5 31. Bd3+ {Weighted Error Value:
White=0.09/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.31"]
[White "Ponkratov, Pavel"]
[Black "Zvjaginsev, Vadim"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2659"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,75,-13,-24,18,0,0,0,8,-20,-24,-34,0,-50,0,0,0,0,0,0,22,0,0,0,0,-42,
-72,-59,-25,-14,-20,-33,-57,-56,888,873,4798,1083,29984,29983,29983,29984,
29984,29985,29985,29986,29986,29987,29987,29988,29988,29989,29989,29990]} 1. e4
e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Bc5
9. Qd2 a6 10. h4 O-O 11. O-O-O Nxd4 12. Bxd4 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]}
13. h5 $1 {[%mdl 4] is recently more successful than 13.Rh3.} Bb7 {C11: French:
Classical System: 4 e5 and 4 Bg5 dxe4.} 14. Rh3 b4 15. Ne2 a5 {[#] The
position is equal.} 16. Qe3 $146 ({Predecessor:} 16. Rg3 Qh4 17. f5 Bxd4 18.
Qxd4 Qxh5 19. f6 g6 20. Re3 Ba6 21. Nf4 Qh6 22. Bxa6 Rxa6 23. Rh3 Qg5 24. Rdh1
h5 25. g4 {1/2-1/2 (25) Motylev,A (2640)-Bartel,M (2634) Moscow 2019}) 16...
Rc8 17. Rg3 Kh8 18. f5 Ba6 (18... exf5 19. h6 $16 (19. e6 Bxd4 20. Qxd4 Nf6 $14
)) 19. Bxc5 Nxc5 20. Nd4 {Bxa6 is the strong threat.} Bxf1 21. Rxf1 $40 {
[%mdl 128] White attacks.} Qh4 22. Rh3 Qg4 23. h6 g6 {[%cal Re6f5]} 24. fxg6
hxg6 25. Rg3 Qe4 26. Qg5 {Threatening mate with Qf6+.} Nd7 27. Rg4 $1 {[%cal
Rg4e4]} Qxe5 28. Qe7 Nc5 {[%mdl 8192] [#] A mistake that costs the game.} (
28... Qe3+ $15 29. Kb1 e5 30. Qxd7 exd4) 29. Nc6 $1 $18 {[%cal Rc6e5][%mdl 512]
} Nd3+ (29... Qe3+ 30. Kd1) 30. Kd2 Qxb2 {[#]} 31. Rd4 $1 {White mates.} Rg8 (
31... Qc3+ 32. Ke2) 32. Qf6+ Kh7 33. Qxf7+ Kh8 34. Qf6+ Kh7 {[#]} 35. Qe7+ $1
Kh8 {[#]} 36. h7 $1 Qc3+ 37. Ke2 Qxc2+ 38. Ke3 {Weighted Error Value: White=0.
09/Black=0.35} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.32"]
[White "Henriquez Villagra, Cristobal"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2608"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,90,0,0,0,0,0,1,0,0,11,7,8,26,27,18,25,68,67,131,102,134,95,93,80,114,
38,225,216,222,208,439,417,349,252,265,264,250,237,332,318,293,145,134,130,258,
254,241,0,157,20,23,16,23,16,114,115,114,24,28,22,53,0,10,0,9,0,36,0,0,0,0,0,0,
0,8,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6 5. Be2 Nh5 6. Bg5
{A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle Systems.} h6 7. Bh4 g5 8. Bg3
c5 9. c3 {[#]} O-O $146 ({Predecessor:} 9... Nxg3 10. hxg3 Qb6 11. Na3 Bf5 12.
Nc4 Qc7 13. a4 Nd7 14. d5 Be4 15. Na3 a6 {1-0 (33) Krainski,S (2014)-Poznanska,
K (2121) Poronin 2013}) 10. dxc5 Nxg3 11. hxg3 dxc5 12. Qc2 e5 13. Nbd2 Nc6 (
13... Qe7 $1 $14) 14. Ne4 {And now Nexg5! would win.} f5 15. Bc4+ $40 {[%mdl
128] White attacks with force.} (15. Nxc5 Qe7 $14) 15... Kh8 {[#]} 16. g4 $1
Qe7 {[#]} (16... fxe4 17. Qxe4) 17. O-O-O $1 fxg4 $2 (17... fxe4 $14 18. Qxe4
Be6 19. Bxe6 Rxf3 20. gxf3 Qxe6) 18. Nfxg5 $1 $18 (18. Nexg5 $2 Bf5 $19) 18...
Bf5 19. Rh5 Na5 $2 {[#]} (19... Rab8 20. Rdh1 b5) 20. Be6 $1 {[%mdl 512]} Bg6 (
20... Bxe6 $2 21. Nf6 $1 $18 {[%mdl 512]}) 21. Rdh1 g3 {aiming for ...gxf2.} (
21... Bxh5 $2 22. Rxh5 Rf5 23. Bxf5 $18) 22. f3 (22. fxg3 Bxh5 23. Rxh5 Rf1+
24. Kd2 Raf8 $19) (22. Rxh6+ Bxh6 23. Rxh6+ Kg7 $14) 22... Rad8 (22... Bxh5 $2
23. Rxh5 Rf5 24. Bxf5 $18) 23. c4 (23. Rxh6+ Bxh6 24. Rxh6+ Kg7 $16) 23... b5 (
23... Bxh5 $2 24. Rxh5 Nxc4 25. Bxc4 $18) (23... Qe8 {might work better.}) 24.
cxb5 (24. Rxh6+ Bxh6 25. Rxh6+ Kg7 $16) 24... c4 25. Qc3 (25. Rxh6+ Bxh6 26.
Qc3 (26. Rxh6+ Kg7 $16) 26... Qg7 $18) (25. R5h4 $18 {has better winning
chances.}) 25... Bxh5 $16 26. Rxh5 Qc7 (26... Qe8 $16 27. Rh1 (27. Nxg3 Qxb5
28. Qc2 Rd3 $16) 27... Qxb5) 27. Qe1 $18 (27. Nf7+ $2 Rxf7 28. Bxf7 Rd3 $19)
27... Qb6 {[#]} 28. Kc2 $2 ({Resist} 28. Nxg3 $6 Rde8) ({But not} 28. Nf7+ $6
Rxf7 29. Bxf7 Qxb5 $16) (28. Kb1 $1 $18 {Qh1 is the strong threat.} Rde8 29.
Rh1) 28... Rde8 $2 ({Black should play} 28... Qxb5 $11 29. Rh1 Nb7) 29. Nf7+ (
29. Rh1 $16) 29... Rxf7 $1 $11 30. Bxf7 Rf8 {[%cal Rf8f7]} 31. Bd5 {Threatens
to win with Rh3.} Qxb5 (31... Rd8 $1 $11 {keeps the balance.} 32. Qd2 Qxb5) 32.
Nc3 $16 Qb6 {Strongly threatening ...Qg6+.} 33. Be4 (33. Kc1 $16) 33... Rb8 $11
34. Nd1 Nc6 35. a3 (35. Rh1 $14) 35... Rd8 36. Rh1 Na5 $1 37. Qb4 Nb3 38. Qxb6
(38. Qxc4 {looks sharper.} Na1+ 39. Kb1 Nb3 40. Qb4 Nd2+ 41. Kc1) 38... axb6 {
The position is equal.} 39. Kc3 b5 40. Kb4 Rb8 41. Bd5 e4 42. Bxe4 Bf8+ 43. Kc3
Bg7+ 44. Kb4 Bf8+ 45. Kc3 Bg7+ {White really could win this.  Weighted Error
Value: White=0.30/Black=0.31} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.33"]
[White "Anton Guijarro, David"]
[Black "Ter-Sahakyan, Samvel"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2658"]
[BlackElo "2607"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,73,25,32,29,34,31,33,23,39,39,39,39,36,39,43,36,32,26,33,0,32,-7,21,
21,21,19,24,17,29,19,22,22,16,6,29,0,0,0,0,0,0,4,4,4,4,0,11,0,6,0]} 1. d4 Nf6
2. Nf3 d5 3. c4 e6 4. Nc3 Nbd7 5. cxd5 exd5 6. Bg5 c6 7. Qc2 h6 8. Bh4 Be7 9.
e3 O-O 10. Bd3 Re8 11. O-O Ne4 12. Bxe4 Bxh4 13. Bh7+ Kh8 14. Nxh4 {D36:
Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2).} Qxh4
15. Bd3 Qe7 16. Rab1 {White is slightly better.} Nf6 {[%cal Bd7f6,Bf6e4,Be4d6,
Bd6b5][%mdl 32]} 17. b4 {[#]} Qd6 $146 ({Predecessor:} 17... Bd7 18. a4 Rac8
19. Rfc1 Ng4 20. h3 Nf6 21. Qa2 Be6 22. Ne2 Ne4 23. Bxe4 dxe4 {1/2-1/2 (52)
Meiners,E (2345)-Nordal,S (2288) ICCF email 2015}) 18. h3 Bd7 19. Rfc1 Rac8 20.
a4 a6 21. Ne2 Ne4 22. Nf4 Qf6 (22... g5 $5 {[%cal Rg5f4]} 23. Ne2 f5 $11) 23.
Qb2 Nd6 (23... g5 $5 {[%cal Rg5f4]} 24. Nh5 Qg6 $11) 24. b5 cxb5 25. axb5 Bxb5
26. Nxd5 Qe6 27. Nf4 {[%cal Bd5f4,Bf4d3,Bd3c5][%mdl 32]} Qd7 28. Bxb5 Nxb5 29.
Nd3 Kg8 30. Qb3 Rxc1+ {The position is equal.} 31. Rxc1 Rc8 32. Nc5 Qc6 33. Rb1
Rd8 34. Nd3 Rc8 35. Nc5 Rd8 36. Nd3 Rc8 37. Nc5 {Weighted Error Value: White=0.
06/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.34"]
[White "Ivic, Velimir"]
[Black "Howell, David W L"]
[Result "0-1"]
[ECO "C65"]
[WhiteElo "2606"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,90,16,24,23,21,13,31,13,20,11,14,12,39,25,28,18,14,18,21,27,41,6,37,
-25,0,0,0,0,0,0,0,0,0,-20,-6,-15,39,29,36,25,91,91,111,109,86,0,0,4,73,-27,116,
93,104,90,39,0,0,-45,-41,-56,-56,-56,-56,-57,-56,-75,-79,-690,-717,-731,-746,
-1218,-1184,-1039,-968,-1058,-1046,-1338,-1022,-29988,-29989,-29989,-29990]} 1.
e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6. Nbd2 {[%cal Bb1d2,Bd2b3,
Bb3a5][%mdl 32] C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4
0-0 Bc5.} Bg4 {6...Nd7 is a critical line.} 7. h3 Bh5 8. g4 {White is slightly
better.} Bg6 9. Nb3 Bd6 10. Na5 {[#]} Qc8 $146 ({Predecessor:} 10... Bb4+ 11.
Bd2 Bxa5 12. Bxa5 Nd7 13. h4 h5 14. g5 Qe7 15. Rg1 O-O-O 16. Qe2 Nf8 {1-0 (56)
Tabatabaei,M (2629)-Aleksandrov,A (2563) Chess.com INT 2021}) 11. Bd2 Nd7 12.
Nh4 Nc5 13. Nf5 Ne6 14. Qf3 c5 15. Qg3 b5 16. c4 (16. h4 $14) 16... a6 17.
O-O-O Qd7 18. Kb1 O-O-O 19. Be3 b4 20. f3 f6 21. Qf2 h5 22. h4 Bf8 ({Black
should try} 22... Qa4 $11 23. Nb3 Qc6) 23. Nb3 $14 {[%cal Rb3c5]} Qc6 24. g5
Bxf5 (24... Qb6 $11) 25. exf5 $16 Nd4 26. Bxd4 exd4 27. Rhe1 (27. Rde1 $16)
27... fxg5 $11 28. hxg5 Bd6 (28... h4 $1 $11 {remains equal.}) 29. f4 (29. Qg2
$16) 29... Rdf8 (29... h4 $11 {keeps the balance.}) 30. f6 $1 $16 {[%cal Rf6g7]
} gxf6 31. g6 {[#] Black must now prevent g7.} Rfg8 32. f5 {[%mdl 1024] White
has compensation.} (32. Na5 $5 {[%cal Ra5c6]} Qa8 33. Re6 $16) 32... h4 33. Na5
Qa8 34. Re4 h3 35. Qf3 {[#] Hoping for Re8+!} Kb8 36. Rh1 h2 37. Kc2 Ka7 38. a3
$2 {[%mdl 8192] Loses the game.} (38. Nb3 $17) 38... bxa3 $19 39. bxa3 Rb8 40.
Qg2 Rb6 {And now ...Rhb8 would win.} 41. Qf1 Qb8 {( -> ...Rb2+)} 42. Qa1 Rh5
43. Rf1 Qh8 44. Ree1 h1=Q 45. Rxh1 Rh2+ {Weighted Error Value: White=0.66/
Black=0.22} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.35"]
[White "Jumabayev, Rinat"]
[Black "Petrosyan, Manuel"]
[Result "1/2-1/2"]
[ECO "E03"]
[WhiteElo "2658"]
[BlackElo "2605"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,96,11,7,9,0,0,-16,0,0,0,0,0,0,0,0,-6,0,2,0,0,0,0,0,0,0,16,13,11,12,
16,0,0,0,0,-21,0,0,0,0,0,9,10,0,76,56,60,18,41,33,72,6,38,6,7,14,9,-16,2,-162,
-168,-244,-243,-225,-229,-283,-200,-960,-955,-929,-919,-1523,-1471,-29972,
-29974,-29975,-29976,-29977,-29978,-29978,-29979,-29979,-29979,-29979,-29980,
-29980,-29981,-29980,-29980]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+
Nbd7 6. Qxc4 c5 {E03: Open Catalan: 5 Qa4+ Nbd7 6 Qxc4.} 7. Nf3 a6 8. Qd3 cxd4
{The position is equal.} 9. Nxd4 Nc5 10. Qe3 Nd5 11. Qd2 b5 12. Nc3 Bb7 13.
Nxd5 Bxd5 {[#]} 14. Nc6 $1 {[#]} Qd7 $146 ({Predecessor:} 14... Qd6 15. Bxd5
exd5 16. Nd4 Ne4 17. Qd3 Qb4+ 18. Kf1 Qc4 19. Be3 Qxd3 20. exd3 Nc5 {1/2-1/2 
(53) Donchenko,A (2644)-Narayanan,S (2529) Sitges 2019}) 15. Ne5 Qb7 16. Bxd5
exd5 17. O-O Be7 18. Rd1 O-O 19. Qc2 ({Not} 19. Qxd5 $2 Rad8 $19) 19... Rac8
20. Qf5 Ne6 21. Qf3 Rc2 22. Be3 (22. Qxd5 {with more complications.} Qxd5 23.
Rxd5 Rxe2 24. Nd3 Rc2 25. Be3) 22... Bf6 (22... Rxb2 {is interesting.} 23. Rxd5
Rxe2 24. h4 b4 25. Rad1 Rxa2 26. Qf5 g6) 23. Rxd5 {Hoping for Nd7.} Bxe5 24.
Rxe5 Qxf3 25. exf3 Rxb2 26. f4 Rc8 (26... g6 $11) 27. f5 Nf8 28. Rd5 h6 29. a3
Rb3 30. f6 (30. a4 $16) 30... Ne6 31. h4 gxf6 32. Bxh6 Rc4 33. a4 bxa4 34. Ra5
$2 {Now White is beyond hope.} (34. Rf5 $11) 34... Nc5 $19 35. Be3 (35. Rxc5
$142 Rxc5 36. Rxa4) 35... Rb5 36. Rxb5 axb5 {[%mdl 4096] Endgame KRB-KRN} 37.
h5 Ne4 38. Rd1 $2 (38. Kf1) 38... a3 39. Rd8+ Kh7 40. Rd7 a2 41. Rxf7+ Kg8 {
Black mates.} 42. Ra7 Ra4 43. Rxa4 bxa4 {KB-KN} 44. Bd4 a3 45. Kf1 Nd2+ 46. Ke2
Nb3 47. Bxf6 a1=Q {[%mdl 64] [#] Promotion} 48. Bxa1 Nxa1 {[%mdl 32768]
Weighted Error Value: White=0.67/Black=0.09. An unexpected result.} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.36"]
[White "Adly, Ahmed"]
[Black "Rakhmanov, Aleksandr"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2602"]
[BlackElo "2657"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,112,11,0,0,-4,0,0,0,0,2,-18,-16,-12,-16,-17,-18,-18,-16,-17,-11,-5,0,
0,-9,-8,0,0,0,-6,0,0,0,0,0,0,0,0,0,0,0,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0,
0,0,0,0,0,0,0,0,0,0,0,-7,-7,-7,-7,-7,-7,-7,-12,-126,-27,-126,-59,-126,-27,-27,
-27,-30,-7,-126,0,-7,0]} 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 d5 5. c4 c6 6.
O-O O-O 7. cxd5 cxd5 8. Nc3 e6 9. Bf4 Nc6 10. Ne5 Nxe5 11. Bxe5 Bd7 12. Qb3 Bc6
{D79: Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5).} 13.
a4 a5 14. Rfc1 {[#]} Qe7 $146 ({Predecessor:} 14... Ne8 15. Bxg7 Kxg7 16. e3
Nd6 17. Ne2 Ra6 18. Nf4 b5 19. axb5 Bxb5 20. Rc5 Qb6 {1/2-1/2 (56) Kerek,C 
(2380)-Farago,S (2285) Budapest 1998}) 15. e3 Rfc8 16. Ne2 Bf8 17. Bxf6 Qxf6
18. Nf4 Bd6 19. Nd3 Qe7 20. Bf1 Be8 21. Ne1 f6 22. Bb5 Bf7 23. Bf1 Be8 24. Bb5
Bf7 25. Bf1 $1 Kg7 26. Qb6 Rc7 27. Rxc7 Qxc7 28. Qxc7 Bxc7 29. Rc1 Bd6 30. Bb5
e5 31. Nd3 Rd8 32. Rc3 Be6 33. Nc5 Bxc5 34. Rxc5 Rc8 35. Rxc8 Bxc8 $11 {
[%mdl 4096] Endgame KB-KB} 36. Be2 Bd7 37. Bd1 e4 38. Bb3 Bc6 39. Kg2 g5 40. g4
Kf7 41. h3 Ke6 42. f3 {Hoping for fxe4.} exf3+ 43. Kxf3 Kd6 44. Bc2 Be8 45. Kg3
h6 46. Bd1 Bg6 47. Kf2 Ke6 48. Kg3 Be4 49. Kf2 Kd6 50. Ke1 (50. Kg3 $11) 50...
Kc6 (50... Bg2 $17 51. h4 gxh4) 51. Kd2 (51. Kf2 $11 {keeps the balance.})
51... Kd7 ({Black should try} 51... Bg2 $17 52. h4 gxh4) 52. Ke1 (52. Ke2 $1
$15) 52... Ke7 (52... Bg2 $17 53. h4 gxh4) 53. Kf2 Bd3 54. Ke1 b6 55. Kd2 (55.
Be2 $11 {remains equal.} Be4 56. Kf2) 55... Bg6 (55... Bf1 $17 56. h4 gxh4) 56.
Ke1 Be8 {Weighted Error Value: White=0.16/Black=0.15} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.37"]
[White "Cori, Jorge"]
[Black "Goryachkina, Aleksandra"]
[Result "1/2-1/2"]
[ECO "D16"]
[WhiteElo "2655"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,62,12,9,28,2,0,12,7,0,0,0,0,0,0,0,2,0,4,8,10,-12,-2,0,-17,-29,-29,
-20,0,-29,10,10,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6
3. Nf3 Nf6 4. Nc3 dxc4 5. a4 e6 6. e3 c5 7. Bxc4 cxd4 {seems to push 7...Nc6
aside. D16: Slav Defence: 5 a4: Lines with 5...Bg4 and 5...Na6.} 8. Nxd4 Bc5 9.
O-O O-O 10. Qe2 Nbd7 {[%cal Bb8d7,Bd7e5,Be5f3][%mdl 32]} 11. Rd1 Qe7 {[#]} 12.
e4 $146 ({Predecessor:} 12. Nf3 b6 13. h3 Bb7 14. e4 Rfc8 15. Bd3 Bb4 16. Na2 {
1/2-1/2 (32) Lenic,L (2624)-Beliavsky,A (2603) Bled 2016}) 12... Ne5 13. Bg5 b6
14. Nf3 Nxf3+ 15. Qxf3 {[#] Black must now prevent e5.} h6 16. Bxf6 Qxf6 17.
Qxf6 gxf6 18. a5 bxa5 $1 19. Rxa5 Bb4 20. Ra4 (20. Rh5 {seems wilder.} Bxc3 21.
bxc3 Bb7 22. Ra5 Bxe4 23. f3) 20... Bxc3 (20... a5 {looks sharper.} 21. Na2 Be7
22. Nc3 Rd8 23. Rxd8+ Bxd8 24. f3 Rb8) 21. bxc3 {The position is equal.} Bb7
22. Ba6 Bxa6 23. Rxa6 $11 {[%mdl 4096] Endgame KRR-KRR} Rfc8 24. Rc1 (24. Rd3 {
with more complications.} Rab8 25. g4 Rc7 26. Kg2 Rb5 27. Kg3) 24... Rab8 25.
Rxa7 (25. f3 {feels hotter.} Rb2 26. Rxa7 Rd8 27. Kh1 Rdd2 28. Rg1) 25... Rxc3
{[%cal Rc3c1] [#]} 26. Raa1 Rxc1+ 27. Rxc1 Rb5 28. f3 f5 29. exf5 Rxf5 30. Kf2
Kg7 31. h4 Ra5 {A rather calm draw.  Weighted Error Value: White=0.04/Black=0.
03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.38"]
[White "Bartel, Mateusz"]
[Black "Najer, Evgeniy"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2597"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,109,0,8,0,0,-25,23,27,19,18,31,17,35,37,25,23,34,36,34,32,37,25,56,66,
51,44,37,55,91,88,80,99,91,73,96,95,185,179,179,180,166,159,180,164,152,161,
207,207,208,207,213,222,222,218,222,216,227,219,219,214,274,258,243,247,246,
240,225,220,225,212,168,16,20,20,344,329,1039,680,1701,1730,2365,1956,7048,
6575,4622,4622,4622,4618,1641,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6
3. Nc3 g6 4. Bc4 Bg7 5. O-O d6 6. d3 {B30: Sicilian: 2...Nc6 3 Bb5, lines
without ...g6.} e6 7. Be3 Nd4 8. Bxd4 {White has an edge.} cxd4 9. Ne2 Qb6 {[#]
} 10. a4 $146 {[%cal Ba2a4,Ba4a5][%mdl 32]} ({Predecessor:} 10. Bb3 Ne7 11. Qd2
O-O 12. c3 dxc3 13. Nxc3 Bd7 14. Rac1 Rac8 15. Ne2 Nc6 16. Ba4 {1-0 (73) Obaco
Cuenca,D (1309)-Morales Risco,H (1313) Chess.com INT 2020}) 10... Ne7 11. a5
Qc5 {[#]} 12. Nexd4 $1 Bxd4 13. b4 $36 {[%cal Rb4c5][%mdl 2048] White is
pushing.} Qxb4 14. Nxd4 {Threatens to win with Ra4!} O-O 15. Qb1 Qxb1 16. Rfxb1
Rd8 17. Nb5 Nc6 18. d4 Rb8 19. d5 exd5 20. exd5 Ne5 21. Nxa7 {aiming for Nc6!}
Bf5 (21... Nxc4 $2 22. Nc6 $1 $18) 22. Bb3 Nd7 {[#]} (22... Kg7 $16 {is a
better defense.}) 23. Nc6 $1 $18 {[%cal Rc6b8][%mdl 512]} bxc6 24. dxc6 Rbc8
25. cxd7 Rxd7 26. f3 Ra7 27. Bd5 Rc5 28. Rb8+ $1 Kg7 {[#]} 29. Rb7 $1 Raxa5 (
29... Rcxa5 30. Rxa7) 30. Rxf7+ Kh6 31. Rxa5 Rxa5 {[%mdl 4096] Endgame KRB-KRB}
32. c4 Ra1+ 33. Kf2 Ra2+ 34. Kg3 Bd3 35. Rc7 g5 36. Rd7 Bf1 37. Rxd6+ Kg7 38.
Kg4 Rxg2+ {[#]} 39. Kf5 $1 {And now Rd7+ would win.} Bd3+ 40. Be4 $2 (40. Ke5
$18) 40... Bxe4+ $1 $11 41. fxe4 {Black must now prevent h3. KR-KR} Rc2 $2 {
[%mdl 8192] [#]} (41... Rxh2 $11 {and Black is okay.} 42. e5 (42. Kxg5 Kf7 $16)
42... Rf2+ 43. Ke6 (43. Kxg5 h6+ 44. Kg4 h5+ 45. Kg5 Kf7 $11) 43... g4) 42.
Rd7+ $1 $18 ({Not} 42. Kxg5 Rxc4 43. Rd7+ Kg8 $16) 42... Kh6 $2 (42... Kf8 43.
Kf6 (43. Kxg5 Rxc4 44. e5 h5 $16 {[%mdl 64] Decoy}) 43... Rf2+ 44. Kxg5 Rxh2)
43. e5 Rf2+ 44. Ke6 Rxh2 45. Rd4 Kg6 46. Kd7 Ra2 47. Rd6+ Kf5 48. e6 Ra7+ 49.
Ke8 $2 ({White has to play} 49. Kd8 $18 Ra8+ 50. Ke7) 49... Rc7 $11 {The
position is equal.} 50. e7 {Threatening mate with Kf8.} (50. c5 {is
interesting.} Rxc5 51. Kd7 Rc2 52. e7 Re2 53. Rd3) 50... Rxc4 51. Kf8 Re4 52.
Rd5+ Kf6 53. Rd6+ Kf5 54. Rd5+ Kf6 55. Rd6+ {Black escapes into a draw. 
Weighted Error Value: White=0.20/Black=0.23} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.39"]
[White "Oparin, Grigoriy"]
[Black "Sindarov, Javokhir"]
[Result "1/2-1/2"]
[ECO "D80"]
[WhiteElo "2654"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,100,12,14,9,4,0,9,0,0,10,14,0,0,0,0,0,8,0,31,22,49,27,28,25,36,46,37,
37,37,37,37,37,50,37,37,38,163,22,44,44,71,70,45,29,38,30,39,31,34,31,37,30,80,
2,2,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3
d5 4. Bg5 Ne4 5. Bf4 Nxc3 6. bxc3 Bg7 7. e3 c5 8. cxd5 Qxd5 9. Nf3 Nc6 10. Be2
cxd4 11. cxd4 Qa5+ 12. Qd2 O-O 13. Qxa5 {D80: Grünfeld: Unusual White 4th
moves and 4 Bg5.} Nxa5 14. Rc1 Bf5 {[#]} 15. Rc5 $146 ({Predecessor:} 15. O-O
Rac8 16. Nd2 Nc6 17. g4 Bd7 18. Rb1 b6 19. Ba6 Rce8 20. Bb5 Nb8 21. Rfc1 Bxb5
22. Rxb5 {1-0 (47) Adelseck,H (2514)-Packroff,H (2261) ICCF email 2007}) 15...
b6 16. Rc1 Be6 17. Ba6 Bxa2 18. Ke2 Bd5 19. Rc7 Rfe8 20. Rd1 Bf6 21. g4 e6 22.
Ne5 g5 23. Bg3 Bd8 24. Rxf7 {[#] And now Bd3 would win.} Nc6 $1 {[%cal Rc6e5]}
25. Rd7 {Strongly threatening Rxd5!} Nb4 {[%cal Rb4a6]} 26. Bb5 {aiming for
Rxd5!} Re7 27. Rb1 a5 28. f3 Rxd7 29. Bxd7 Be7 (29... Ra7 $14) 30. Be1 (30. e4
$18 Ba2 31. Rb2) 30... Ra7 31. e4 Bc4+ 32. Nxc4 Rxd7 33. Bxb4 Bxb4 $16 {
[%mdl 4096] Endgame KRB-KRN} 34. d5 Rc7 35. Nxb6 Rc2+ 36. Kd3 Rc3+ 37. Kd4 Kf7
38. Ke5 ({Better is} 38. Nc4 $16) 38... exd5 $1 $11 {The position is equal.}
39. Nxd5 {[%mdl 64] [#] Double Attack} Rxf3 40. Nxb4 axb4 41. Rxb4 {KR-KR} Rf2
42. h3 Rf3 43. Rb7+ Kg6 44. Rb6+ Kg7 45. Kd5 Rxh3 46. e5 h5 47. gxh5 Rxh5 48.
e6 Rh1 49. Kd6 Kf6 50. Kd7 {Threatening mate with e7+.} Re1 {Weighted Error
Value: White=0.14/Black=0.11} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.40"]
[White "Jobava, Baadur"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "A28"]
[WhiteElo "2582"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,84,4,4,-13,-12,-13,0,0,6,-31,-16,-12,0,0,0,-53,-42,-60,-43,-44,-47,
-44,-12,-20,-21,-15,0,-10,37,0,62,43,72,27,35,13,17,20,18,22,12,12,8,8,31,33,
95,20,17,0,0,0,0,0,0,0,6,14,45,32,47,0,0,0,60,44,54,0,0,0,0,0,0,0,0,0,0]} 1. c4
e5 2. d3 Nf6 3. Nf3 Nc6 4. Nc3 Bb4 5. e4 d6 6. Be2 {A28: English Opening: Four
Knights Variation.} a5 7. O-O {[#]} Bg4 $146 ({Predecessor:} 7... Bc5 8. Be3
Bg4 9. Nxe5 Nxe5 10. d4 Bxe2 11. Qxe2 Bb4 12. dxe5 Bxc3 13. bxc3 dxe5 {0-1 (40)
Kuzubov,Y (2641)-Korobov,A (2683) Kremenchuk 2020}) 8. Kh1 Bc5 9. Qe1 Nb4 10.
Qd1 Nc6 11. Nd5 Bxf3 12. gxf3 ({White should try} 12. Bxf3 $11 Nd7 13. Bg4)
12... Nd4 $15 13. Rg1 Nxd5 14. cxd5 g6 15. f4 c6 16. dxc6 bxc6 17. f5 Qb6 18.
Bg4 Qb5 19. Rg2 Bb6 (19... gxf5 $11 20. exf5 Bb6) 20. Be3 $14 gxf5 (20... Qxb2
$2 21. Rb1 $18) 21. Bxd4 (21. Bh5 {looks sharper.} Ra7 22. Rc1 Kd8 23. a4 Qa6
24. exf5 Rc7 25. Rg7) 21... fxg4 {[#]} 22. a4 $1 Qa6 23. Bxb6 Qxb6 24. Qxg4
Qxb2 25. Rag1 Qb3 26. f4 {And now fxe5 would win.} exf4 (26... Qxa4 $2 27. Rb2
$18) 27. Qxf4 Qe6 (27... Kd7 $14) 28. d4 (28. Rb2 $16) 28... Kd7 29. Rg7 Rhf8
30. Rxh7 Rae8 31. Rg4 Rb8 32. Rg1 $36 {[%mdl 2048] next Rh6 is good for White.
White has some pressure.} Rbe8 33. Re1 Re7 34. Rh6 f6 35. d5 cxd5 36. Qf1 {
Strongly threatening Qb5+.} Ke8 ({Black should play} 36... Qg4 $11) 37. Qb5+ {
[%mdl 64] [#] Double Attack} Qd7 $1 {[%cal Rd7b5] Threatens to win with ...
Qxb5.} 38. Qxa5 ({Better is} 38. Qxd5 $14 Qb7 39. Qh5+ (39. Qxa5 Re5 $15) (39.
Qxd6 $2 Rxe4 40. Qb8+ Qxb8 $19) 39... Kd7 40. Qf5+ {[%mdl 64] Double Attack} (
40. Qxa5 $2 Rxe4 41. Qb5+ Qxb5 $19) 40... Ke8 41. Qh5+ (41. Rxf6 Rxf6 42. Qxf6
Qb4 $11) (41. Qxa5 Re5 $15) 41... Kd7 42. Qf5+ {[%mdl 64] Double Attack} (42.
Qxa5 $2 Rxe4 43. Qb5+ Qxb5 $19) 42... Ke8 43. Qh5+ (43. Rxf6 Rxf6 44. Qxf6 Qb4
$11) (43. Qxa5 Re5 $11)) 38... dxe4 $11 {The position is equal.} 39. Qa8+ Qd8
40. Qd5 {Hoping for Qh5+.} Qc7 41. Qa8+ Qd8 42. Qd5 {Black must now prevent
Qh5+.} Qc7 {Weighted Error Value: White=0.15/Black=0.15} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.41"]
[White "Nihal Sarin"]
[Black "Georgiev, Kiril"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2652"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,71,5,0,0,2,-32,-14,-21,-36,-31,-18,-31,39,39,40,0,18,13,14,11,19,19,
21,24,18,14,25,18,0,7,17,0,38,0,41,33,37,55,37,46,45,60,135,72,71,70,62,69,498,
487,598,603,738,696,767,751,29985,701]} 1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. e3 Nc6
5. Nbd2 e6 6. c3 Bd6 7. Bg3 O-O 8. Bd3 b6 9. e4 {Black must now prevent e5.
D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Be7
10. e5 Nh5 11. Ng5 $1 {The position is equal. The main line 11.Ng5 scores
better than 11.a3.} Bxg5 ({Don't blunder} 11... Nxg3 $2 12. Bxh7+ Kh8 13. Nxf7+
$1 {[%mdl 512]} Rxf7 14. hxg3 $18) 12. Qxh5 {[%csl Gd3][%cal Rh5h7]} g6 13. Qe2
{[#]} Be7 $146 ({Black should try} 13... cxd4 $15 14. h4 Be7) ({Predecessor:} 
13... cxd4 14. h4 Bh6 15. h5 dxc3 16. bxc3 Qe7 17. hxg6 Bxd2+ 18. Qxd2 fxg6 19.
Bh4 Qg7 {0-1 (43) Riff,V (2548)-Abasov,N (2794) Chess.com INT 2019}) 14. Nf3
$14 cxd4 15. Bb5 Qc7 16. cxd4 Nb4 {...Nc2+ is the strong threat.} 17. O-O Bd7
18. Rac1 Bxb5 19. Qxb5 (19. Rxc7 $2 {loses.} Bxe2 20. Rxe7 Bxf1 $19) 19... Qb7
20. a3 a6 21. Qe2 Nc6 22. h4 Rfc8 23. Bf4 Na5 24. Bg5 b5 25. Bf6 Bf8 26. h5
Rxc1 27. Rxc1 Rc8 28. Re1 Rc4 (28... Qc6 $14) 29. hxg6 (29. Ng5 $142 $1 {
Hoping for hxg6.} Rc6 30. Qg4) 29... fxg6 $16 30. Ng5 $36 {[%mdl 2048] White
is pushing.} Qd7 31. Qg4 Rc6 $2 {[%mdl 8192] A mistake that costs the game.} (
31... Bh6 $1 $14) 32. Re3 $1 $18 h5 33. Qe2 Qc8 34. Kh2 Rc1 35. Rh3 {Threatens
to win with Rxh5!} Nc6 {[#]} 36. Qd3 {Weighted Error Value: White=0.07/Black=0.
60} (36. Rxh5 $142 $1 {[%mdl 512]} Bg7 37. Rh7 Qf8 38. Rxg7+ Qxg7 39. Bxg7 Ne7
{[#]} 40. Qe3 $1 Kxg7 41. Qxc1) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.42"]
[White "Gretarsson, Hjorvar Steinn"]
[Black "Volokitin, Andrei"]
[Result "1/2-1/2"]
[ECO "B47"]
[WhiteElo "2577"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,98,0,0,15,0,29,31,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-6,-8,
-6,-6,-3,-4,-5,-5,-3,-50,0,0,0,-24,0,-14,0,0,0,-22,-22,-36,-12,-30,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4
cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. f4 a6 7. Nxc6 bxc6 8. Bd3 d5 9. Qe2 Nf6 10. O-O
Be7 {B46: Sicilian: Taimanov: 5 Nc3 a6.} 11. Bd2 c5 {[#] aiming for ...c4.} 12.
b3 {[%cal Bb2b3,Bb3c4][%mdl 32]} Bb7 {White is slightly better.} 13. Rae1 c4
14. bxc4 {Hoping for exd5.} dxe4 15. Nxe4 Nxe4 16. Bxe4 Bxe4 17. Qxe4 Rc8 18.
f5 Qxc4 {[%mdl 64] [#] Double Attack} 19. fxe6 f6 {[#]} 20. c3 $146 ({
Predecessor:} 20. Qb7 Qc6 21. Rb1 Bc5+ 22. Kh1 Qxb7 23. Rxb7 O-O 24. Re1 Rfe8
25. g3 Rc6 26. e7 Kf7 27. c4 Bd6 28. Bb4 Bxb4 29. Rxb4 Rxe7 30. Rxe7+ Kxe7 {
1/2-1/2 (30) Carlsen,M (2862)-Harikrishna,P (2732) Wijk aan Zee 2021}) 20...
Bc5+ 21. Kh1 $132 {[%mdl 2048] White is not holding back} Qxe4 22. Rxe4 Ke7 23.
Bf4 Rhd8 24. Rb1 g5 25. Be3 Bxe3 26. Rxe3 $11 {[%mdl 4096] Endgame White wants
to play Rb7+. KRR-KRR} Rb8 27. Rf1 h6 {[%mdl 1024] Black has compensation.} 28.
Ref3 Rf8 29. a4 h5 30. h3 Rb6 31. Rf5 Rxe6 32. Rb1 Kf7 33. c4 Rd8 34. a5 Rde8
35. Rb6 {The position is equal.} Re1+ 36. Kh2 R8e6 37. Rc5 R6e2 38. Rf5 Re6 39.
Rc5 Kg6 40. Rcc6 Rxc6 41. Rxc6 {KR-KR} Rc1 42. Rxa6 Rxc4 43. Ra8 Kf5 44. Rb8
Ra4 45. Rb5+ Kf4 46. Rb6 f5 47. a6 g4 {( -> ...g3+)} 48. hxg4 fxg4 49. Rf6+ Ke5
{An uneventful encounter.  Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.43"]
[White "Demchenko, Anton"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2651"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "146"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,146,25,45,23,20,18,47,-15,-14,-10,18,-21,-21,-24,-21,-22,-7,0,0,0,0,0,
8,0,7,0,7,-9,-7,0,0,-20,-12,-18,0,0,0,0,0,0,0,0,0,-12,0,-28,-28,-37,-45,-70,
-60,-55,-64,-64,-76,-62,-62,-70,-62,-63,-47,-101,-62,-54,-61,-75,-91,-63,-80,
-73,-69,-53,0,0,0,0,0,0,-18,-62,-68,-63,-63,-63,-63,-76,0,-33,0,-203,-205,-243,
-120,-323,-238,-558,-551,-571,-319,-317,0,-220,-84,-84,-84,-84,-89,-100,-16,
-16,-8,-8,0,-22,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5
2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Bd3 d5 6. O-O {C42: Petroff Defence: 3
Nxe5 and unusual White 3rd moves.} Be7 7. Re1 O-O 8. Nc3 (8. Bxe4 $14 dxe4 9.
Rxe4) 8... Nc5 $11 9. Bf1 {[#]} d4 $146 ({Predecessor:} 9... Bf6 10. d4 Ne6 11.
g3 Nc6 12. Bg2 Ne7 13. Ne5 c6 14. Na4 Qa5 15. c3 b5 {1-0 (37) Stachanczyk,J 
(2293)-Snajdr,J (1991) Plzen 2010}) 10. Ne4 (10. Ne2 {is more complex.} Nc6 11.
b4 Ne6 12. a3 d3 13. cxd3 Bf6 14. Rb1) 10... Nxe4 11. Rxe4 Bf6 12. d3 Bf5 13.
Re1 Nc6 14. Bf4 Qd7 15. Qd2 Rfe8 16. h3 h6 17. a3 a5 18. Bh2 Be6 19. Qf4 Rec8
20. Re2 a4 21. Rae1 Ra5 22. Qc1 Rb5 23. Bf4 Ra8 24. Nd2 Be7 25. Nc4 Bf8 26. Rd2
Rc5 27. Ne5 Nxe5 28. Bxe5 Rd5 29. Rdd1 Raa5 30. Bf4 Rab5 31. Re4 Rb6 32. Re5
Rxe5 33. Bxe5 c5 34. Re1 Qd5 35. c4 (35. c3 $15) 35... Qd7 36. Be2 Bf5 37. Bf4
Rb3 38. Bd1 Bxd3 39. Bxb3 axb3 40. Re5 f6 ({Black should try} 40... b6 $15) 41.
Rd5 Qe8 {...Be4 is the strong threat.} 42. f3 Kh7 43. h4 Qe6 44. Rd8 Be7 45.
Re8 b5 46. cxb5 Bxb5 47. Rb8 Bd3 ({Better is} 47... Bc6 $17 48. Qd1 Qf5) 48. a4
(48. Qd2 $5 {[%cal Rd2d3]} Bc2 49. h5 $11) 48... c4 49. Rb7 $2 (49. Qd2 $1 $11
{and White stays safe.}) 49... Bc2 $19 50. Bd2 f5 (50... Bc5 $19 {has better
winning chances.} 51. Rb5 Qc6) 51. a5 $2 (51. Qe1 $17 Qxe1+ 52. Bxe1) 51...
Bxh4 52. Rb6 $2 (52. Bxh6 {was the crucial defense.} Qxh6 53. Qxh6+ Kxh6 54. a6
) 52... Qe2 53. Bxh6 Qf2+ 54. Kh1 {Black must now prevent Bxg7!} Bd8 $2 ({
Weaker is} 54... gxh6 55. Qxh6+ Kg8 56. Rg6+ Kf7 57. Qh7+ Kf8 58. Rg8#) (54...
d3 $19 55. Bf4 Bg3) 55. Bg5 $2 (55. Qf4 $1 $11 Bxb6 56. axb6) 55... Bxb6 (55...
Bc7 $1 $19 56. Rb7 Be5) 56. axb6 $17 {[#]} c3 $1 {Hoping for ...Bd3.} 57. b7
cxb2 58. Qxb2 {[#]} Qe1+ ({Black should play} 58... Qf1+ $1 $17 59. Kh2 Qb5)
59. Kh2 $11 {The position is equal.} Qb4 60. Bc1 Kg6 61. Kh3 d3 62. Qe5 Qxb7
63. Qe6+ Kh7 {aiming for ...d2!} 64. Qxf5+ Kg8 {Strongly threatening ...d2!}
65. Qe6+ Qf7 66. Qd6 Kh7 67. Kh2 Qf6 68. Qb4 b2 69. Qe4+ g6 (69... Qg6 $5 70.
Qh4+ $8 Kg8 71. Qc4+ Kh8 72. Qc8+ Kh7 73. Qh3+ Kg8 74. Qc8+ Kh7 75. Qh3+ Kg8
76. Qc8+ Kh7 $11) 70. Qb7+ Qg7 71. Qxg7+ Kxg7 72. Bxb2+ Kf7 73. Bc3 Ke6 {
White happily takes the draw.  Weighted Error Value: White=0.32/Black=0.23}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.44"]
[White "Neiksans, Arturs"]
[Black "Sarana, Alexey"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2570"]
[BlackElo "2649"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,115,19,18,12,18,13,14,12,16,14,11,5,8,11,8,28,20,27,26,17,21,50,55,
63,64,70,64,79,75,65,57,65,27,23,16,23,27,11,21,0,-9,0,0,0,0,0,0,0,-6,-5,-21,
-21,-21,-21,-21,-21,-21,-21,-21,-21,-21,-21,-21,-21,-21,-21,-21,-21,-21,-10,
-10,0,0,0,-21,-21,-21,0,0,0,0,0,0,0,-21,-21,-21,-21,-21,-21,-21,0,0,0,0,6,0,
217,156,595,563,605,1619,779,753]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c3 Ngf6 5.
Qe2 a6 6. Ba4 b5 7. Bc2 Bb7 {B51: Sicilian: Moscow Variation (3 Bb5+) without
3...Bd7.} 8. d4 e6 9. O-O Be7 {The position is equal.} 10. Re1 Qc7 11. Bd3 e5
12. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3,Be3d5][%mdl 32]} O-O 13. dxe5 {[#]} Nxe5 $146
({Predecessor:} 13... dxe5 14. c4 b4 15. Nf1 Rfe8 16. Bg5 Bf8 17. N3d2 a5 18.
Ne3 g6 19. Nd5 Qc6 {1-0 (69) Murzin,V (2513)-Aditya,M (2453) chess24.com INT
2021}) 14. Nxe5 dxe5 15. c4 b4 16. Nf1 Nd7 17. Ne3 Bg5 18. Nd5 Qd8 19. Bc2 Bc6
20. Bxg5 Qxg5 21. Qd1 Rfd8 22. Ba4 Bxa4 23. Qxa4 Nf8 $1 24. a3 bxa3 25. Qxa3
Ne6 26. Qg3 (26. b4 {is interesting.} cxb4 27. Qxb4 Nd4 28. Qc3 Rdb8 29. c5)
26... h6 27. Qxg5 hxg5 28. f3 Rdb8 29. Ra2 Rb7 30. Re2 Nd4 31. Rd2 a5 32. Kf1
f6 33. h3 Rb3 34. Rd1 Kh7 35. Rd2 Kh6 36. Rd1 Kh5 37. Rd2 Ra6 38. Nc7 Ra7 39.
Nd5 Ne6 40. Rd1 Nf4 41. Kg1 Kh4 {Strongly threatening ...Kg3.} 42. Kh2 {
Hoping for g3+.} Ne6 43. Rd2 Nd4 44. Rd1 Rab7 45. Rd2 $1 Nc6 46. Nc3 Nd4 47.
Nd5 $40 {[%mdl 128] White attacks.} Ra7 48. Rd1 Kh5 49. Kg1 Rab7 50. Rd2 $1 Nc6
51. Kh2 Kh4 52. Nc3 R3b4 53. Nd5 Rxc4 54. g4 {Threatening mate with Ne3.} Rb3 (
54... Nd4 $11 {and Black has nothing to worry.} 55. Ne3 Nxf3+ {[%mdl 64]
Double Attack} 56. Kg2 Ne1+ 57. Kh2 Nf3+ {[%mdl 64] Double Attack} 58. Kg2 Ne1+
59. Kh2 Nf3+ {[%mdl 64] Double Attack}) 55. Ra3 $18 Rd4 $2 (55... Rcb4 $16 {
is a better chance.} 56. Nxb4 Rxb4) 56. Re2 $1 {White is clearly winning.} Rbd3
{[#]} 57. Rxd3 (57. Ne3 {[#]} Rxe3 $1 58. Raxe3 Rb4 $11) 57... Rxd3 58. Ne3 {
[%cal Re3g2] Weighted Error Value: White=0.02/Black=0.22} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.45"]
[White "Donchenko, Alexander"]
[Black "Bjerre, Jonas Buhl"]
[Result "1/2-1/2"]
[ECO "B94"]
[WhiteElo "2648"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,107,23,15,21,19,10,0,0,0,0,0,0,0,12,0,0,6,9,0,43,32,18,10,29,24,73,
90,88,81,100,44,64,57,210,215,279,297,306,293,451,452,435,190,428,277,279,279,
277,277,277,277,277,274,244,224,458,463,463,463,456,257,256,259,256,256,251,62,
62,62,62,62,62,62,62,0,62,62,62,62,62,69,69,44,44,0,0,0,0,0,0,0,0,0,0,0,0,0]} 
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 {[%cal Bb8d7,
Bd7c5,Bc5b7,Bb7d8,Bd8c6][%mdl 32]} 7. Bc4 {7.Qe2 is setting a new trend.} Qb6 {
B94: Sicilian Najdorf: 6 Bg5 Nbd7.} 8. Bb3 e6 9. Qd2 Be7 10. h4 Nc5 11. f3 Bd7
12. g4 Qc7 13. a3 {[#]} b5 $146 ({Predecessor:} 13... Nxb3 14. cxb3 h6 15. Be3
d5 16. exd5 Nxd5 17. Nxd5 exd5 18. Kf2 Rc8 19. Bf4 Qd8 {1/2-1/2 (32) Maerten,T
(2525)-Perkiomaki,J (2371) ICCF email 2014}) 14. Ba2 Rb8 15. b4 Nb7 16. Nce2
Nd8 17. Be3 Nc6 18. O-O-O a5 19. g5 Nh5 20. Nxc6 Bxc6 21. Kb2 (21. bxa5 $16 O-O
22. Bb6 Rxb6 23. axb6 Qxb6 24. Qd4) 21... axb4 22. axb4 d5 $2 ({Black should
try} 22... O-O $14) 23. exd5 $18 Bxd5 24. Bxd5 exd5 25. Nc3 ({Not} 25. Qxd5 O-O
$14) 25... Rd8 (25... d4 $142) 26. Nxd5 Qe5+ 27. Kb3 (27. c3 $142) 27... O-O $2
(27... Rxd5 {was necessary.} 28. Qxd5 Qxe3+ 29. Rd3 Qe6) 28. Rhe1 Bxb4 29. Qxb4
Rxd5 {[#]} 30. Bc1 $1 ({Resist} 30. Bc5 $6 Rxd1 31. Rxe5 Rb1+ 32. Kc3 Rxb4 $16)
30... Rxd1 31. Rxe5 {White threatens Qxf8+! and mate.} Rxc1 32. Kb2 Rd1 33.
Rxb5 g6 $2 (33... Rdd8 34. f4 g6) 34. Rb8 {[%csl Gb8][%cal Rb4f8]} Rdd8 {[#]}
35. Rxd8 Rxd8 {[%mdl 4096] Endgame KQ-KRN} 36. Qe7 (36. Qb6 $142 Rc8 37. Qb7)
36... Rb8+ 37. Ka3 Ng7 38. c4 Ne6 39. c5 $2 (39. Qa7 $18 Rc8 40. Kb4) 39...
Ra8+ $14 40. Kb4 Rb8+ $1 41. Ka5 Ra8+ $1 42. Kb5 Rb8+ $1 43. Ka5 {Threatens to
win with c6.} Ra8+ $1 44. Kb6 $1 {c6 is the strong threat.} Rb8+ 45. Kc6 $1 {
[%cal Rc6d5]} Rc8+ 46. Kd6 {Hoping for c6.} Nxc5 47. h5 gxh5 48. Ke5 h4 {
The position is equal.} 49. Kf6 (49. f4 {feels hotter.} h3 50. f5 h2 51. g6
hxg6 52. fxg6 fxg6 53. Qh4) 49... Rc6+ 50. Kf5 {Qe8+ would kill now.} Rc8 51.
Qe1 Ne6 52. Qxh4 {And now Qb4 would win.} Ng7+ 53. Kg4 Rc4+ 54. f4 {Black
defended with fortune.  Weighted Error Value: White=0.25/Black=0.20} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.46"]
[White "Meshkovs, Nikita"]
[Black "Swiercz, Dariusz"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2550"]
[BlackElo "2647"]
[Annotator "TA"]
[PlyCount "206"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,206,0,0,5,13,11,11,0,18,7,7,7,7,7,7,4,12,0,0,0,0,0,8,0,10,0,0,-10,0,0,
0,0,0,-29,-18,-27,-20,-12,0,-30,0,-47,-16,-15,0,0,0,0,0,0,0,-20,0,-20,-20,-20,
-20,-20,-20,-20,-20,-32,-32,-37,-20,-20,-20,-20,-20,-20,-20,-20,-20,-20,-20,
-52,-50,-52,-45,-186,-147,-135,-130,-133,-147,-127,-74,-146,-146,-153,-153,
-155,-155,-155,-155,-226,-225,-216,-217,-215,-212,-177,-122,-121,-129,-122,-76,
-83,-81,-118,-118,-125,-115,-115,-53,-53,-53,-53,-53,-53,-48,-53,-53,-53,-53,
-53,-53,-167,-167,-165,-115,-281,-291,-212,-179,-357,-357,-357,-353,-383,-338,
-352,-350,-349,-349,-287,-190,-416,-400,-236,-164,-150,-138,-585,-546,-428,-85,
-64,-4,-4,-4,-4,-4,-4,-4,-4,-4,-12827,-12827,-12834,-12824,-12825,-12825,
-12825,-12825,-12824,-1958,-12832,-12826,-12833,-12821,-12829,-2866,-12830,
-12831,-12829,-12831,-12835,-12831,-12832,-12823,-12833,-12833,-12827,-2616,
-12839,-12839,-12840,-12837]} 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e4 Bb4 5. d3 d6
6. a3 {A28: English Opening: Four Knights Variation.} Bc5 $1 {With the idea ...
Ng4. 6...Bc5 scores better than 6...Bxc3+.} 7. b4 Bb6 8. Na4 {The position is
equal.} Bg4 9. Be2 Bxf3 10. Bxf3 Bd4 11. Rb1 O-O 12. O-O {[#]} Qe7 $5 $146 {
[%mdl 8] An interesting novelty.} ({Predecessor:} 12... a6 13. Bd2 Ba7 14. g3
Nd4 15. Bg2 Nd7 16. Nc3 c6 17. Kh1 a5 18. f4 axb4 19. axb4 {1-0 (61) Vitiugov,
N (2732)-Motylev,A (2651) Douglas 2019}) 13. g3 a5 14. b5 Nd8 15. Bg2 Ne6 16.
Be3 h5 17. Qd2 h4 18. Nc3 c6 19. Ne2 hxg3 20. hxg3 Bc5 21. a4 Bb4 22. Qd1 Rad8
23. Bd2 Ra8 24. Be3 Rfd8 25. Bb6 Rd7 26. d4 Qe8 27. d5 cxd5 28. cxd5 Nc5 29.
Bxc5 Bxc5 30. Qd3 Rdd8 31. Bh3 g6 32. Kg2 Kg7 33. Nc1 {[%cal Be2c1,Bc1b3,Bb3d2,
Bd2f3][%mdl 32]} Qe7 34. Nb3 Bb6 35. Rbc1 Rh8 36. Rh1 Rh6 37. Nd2 Rah8 {
White must now prevent ...Bxf2!} 38. Qe2 Bc5 39. Nf3 Rh5 40. Rh2 Qd8 41. Rch1
Qb6 42. g4 R5h7 43. Ng5 $1 Rh4 $36 {[%mdl 2048] Black fights for an advantage.}
44. Kg3 (44. Nf3 $15) 44... Qd8 45. Nf3 R4h6 46. Kg2 Nh7 47. Qd2 f6 (47... g5
$142 48. Kg3 Bb4) 48. Kg3 (48. g5 $142 Nxg5 49. Nxg5 fxg5 50. f3) 48... Ng5 $17
49. Nxg5 fxg5 50. Bf1 Rh4 51. f3 Qf6 {Threatens to win with ...Rxh2.} 52. Be2 (
52. Rh3 $17 {was worth a try.}) 52... Bb4 $19 53. Qc1 {[#]} Be1+ $1 {[%mdl 512]
} 54. Kg2 {[#]} Rxg4+ $3 {[%mdl 512]} 55. Kf1 {Threatening mate with Qc7+.}
Rxh2 ({Black should try} 55... Bh4 $1 $19 56. Qc7+ Kh6) 56. Rxh2 $17 {Qc7+
would kill now.} Bh4 $1 {And now ...Rxe4 would win.} 57. Qe3 Rg3 {Strongly
threatening ...g4.} 58. Rg2 g4 {[%cal Rg4f3]} 59. Rxg3 Bxg3 60. Bd1 Bf4 61. Qb6
Kh6 (61... Qh4 $1 $17 {[%cal Rh4h3]} 62. Qg1 (62. Qxb7+ Kh6 $19) 62... g3) 62.
Qg1 $1 $15 (62. Qxb7 $2 Qh4 $19) 62... gxf3 63. Qg4 Qe7 64. Bxf3 Kg7 65. Qc8
Be3 66. Ke2 Bc5 67. Qg4 Bd4 68. Qc8 ({White should play} 68. Ke1 $15) 68... Qh4
$1 $19 {[%cal Rh4f2] Hoping for ...Qf2+.} 69. Kd3 Qf4 70. Qd7+ $2 (70. Qh3 $17)
70... Kh6 71. Qh3+ Kg5 $1 72. Be2 $2 (72. Qg2+ Kf6 73. Qh3) 72... b6 ({And not
} 72... Qc1 73. Qg4+ Kf6 74. Qe6+ Kg7 75. Qd7+ Kh8 76. Qh3+ Kg8 77. Qe6+ Kh8
78. Qh3+ Kg8 79. Qe6+ Kh8 80. Qh3+ $11) 73. Bd1 Bc5 ({Not} 73... Qc1 74. Qg4+
Kf6 75. Qe6+ Kg7 76. Qe7+ Kh6 77. Qh4+ Kg7 78. Qe7+ Kh8 79. Qf8+ Kh7 80. Qe7+
Kg8 81. Qd8+ Kh7 82. Qe7+ Kg8 83. Qd8+ Kh7 84. Qe7+ $11) 74. Qg2+ Kf6 75. Qh3
Bb4 $1 76. Qh8+ Kg5 $1 77. Qd8+ Qf6 ({Weaker is} 77... Kh6 78. Qh8+ Kg5 79.
Qd8+ Qf6 80. Qxf6+ Kxf6 81. Ke3 $17) 78. Qxb6 $2 (78. Qxf6+ Kxf6 79. Ke3) 78...
Qf1+ {[%mdl 64] Double Attack} 79. Kc2 Qc4+ 80. Kb1 Qxe4+ 81. Bc2 $2 {[%mdl
8192]} (81. Kb2 $17 {was the crucial defense.}) 81... Qe1+ 82. Ka2 {intending
Qd8+.} Bc5 $2 (82... Bc3 $1 $19 {( -> ...Qa1+)} 83. Qd8+ Kh5 84. Qh8+ Kg4 85.
Qc8+ Kg3) 83. Qd8+ $17 Kf4 (83... Kh5 $1 $15 84. Qd7 Qe3) 84. Qf6+ $11 Ke3 {
...Bd4 is the strong threat.} 85. Qxg6 Qc3 86. Qg5+ Ke2 87. Qg2+ Ke1 88. Qe4+
$2 {[%mdl 8192] [#] White is on the road to losing.} (88. Qh1+ $11 Kd2 89. Qd1+
Ke3 90. Qg1+ Kf3 91. Qh2 Qa3+ 92. Kb1) 88... Kd2 $1 $19 {Black is clearly
winning.} 89. Bb3 Qd3 90. Qg2+ Qe2 91. Qxe2+ Kxe2 {[%mdl 4096] Endgame KB-KB}
92. Bc2 {[#]} Ke3 $1 {[%cal Re3d4]} 93. Bg6 Kd4 94. Bf7 Kc3 95. Bg6 Kc4 (95...
Bb6 $142 96. Ka3 Kc4) 96. Bf7 Bb6 97. Kb2 Kb4 98. Be8 Kxa4 99. Kc3 Ka3 100. Bh5
Bd4+ 101. Kc4 Kb2 (101... a4 $142 102. Bd1 Bb6) 102. b6 a4 103. b7 Ba7 {
Weighted Error Value: White=0.12/Black=0.07} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.47"]
[White "Abdusattorov, Nodirbek"]
[Black "Kuybokarov, Temur"]
[Result "1/2-1/2"]
[ECO "A27"]
[WhiteElo "2646"]
[BlackElo "2549"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,88,35,39,39,28,37,27,41,31,41,31,36,26,29,23,26,22,32,29,25,40,36,35,
31,46,-1,61,53,118,47,53,39,47,43,40,45,56,41,52,63,61,20,73,58,63,81,141,137,
221,72,100,0,0,-256,-361,-170,-180,-167,0,0,0,-269,-147,-180,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0]} 1. c4 e5 2. Nc3 Nc6 3. Nf3 f5 4. g3 Nf6 5. d4 e4 6. Nh4 {
A27: English Opening: Three Knights Variation.} Bb4 7. Nxf5 d5 8. Ne3 {[%cal
Rc4d5] White has an edge.} (8. Nxg7+ Kf7 $17) 8... dxc4 9. d5 Bxc3+ 10. bxc3
Ne7 {[%cal Re7d5]} 11. Qa4+ Kf7 12. Qxc4 {Black must now prevent d6+.} Nexd5 {
[#]} 13. Qb3 $146 ({Predecessor:} 13. Nxd5 Qxd5 14. Qxc7+ Bd7 15. Bg2 g5 16. c4
Qd4 17. Rb1 Rhc8 18. Qa5 Rc5 19. Qa3 Qxc4 {1-0 (37) Matlakov,M (2683)-Wen,Y 
(2585) China 2018}) 13... Be6 14. c4 Nxe3 15. Bxe3 Qd7 16. Bg2 a6 17. Qc3 (17.
Qxb7 $2 Rhb8 $19) 17... Bh3 (17... b5 $11) 18. O-O Rad8 (18... Rhe8 $14) 19.
Rab1 ({Better is} 19. Qb3 $1 $16) 19... b6 $14 20. c5 b5 21. c6 Qe6 22. Qa5 $36
{[%mdl 2048] White has good play.} Bxg2 23. Kxg2 Nd5 24. Qxa6 b4 25. Rbd1 Rd6 (
25... Kg6 $11) 26. Qa5 $16 Rc8 27. Rd4 Qf5 (27... Kg6 $142) 28. Kg1 Kg6 (28...
g6 $16 {keeps fighting.}) 29. Qa6 (29. Rfd1 $1 $18 {[%cal Rd4d5] is the
precise move to win.} Nf6 30. Qxf5+ (30. Qxb4 Rxc6 31. a4 Rc2 $18) 30... Kxf5
31. Rxd6 cxd6 32. Rxd6) 29... Rf8 30. Rc1 (30. Bf4 $16 Re6 31. e3) 30... Re6
$11 31. g4 $2 {[%mdl 8192]} (31. Rxd5 $11 Qxd5 32. Rc5) 31... Qxg4+ $19 32. Kh1
Nxe3 {[%csl Ge3][%cal Rg4g2]} 33. Rg1 Rxf2 (33... Qxg1+ $1 $19 34. Kxg1 Kh6 $1)
34. Rxg4+ $11 Nxg4 35. Rd1 $2 {[%mdl 8192]} (35. Qc8 $11 {and White is okay.}
Rf1+ 36. Kg2 Ne3+ 37. Kh3) 35... Ref6 (35... Rxh2+ 36. Kg1 $17) (35... Kh6 $19
36. h3 Rh2+ {[%mdl 64] Double Attack} 37. Kg1 Rxh3) 36. Qc8 $17 {[#]} h5 (36...
Rxh2+ 37. Kg1 $11) (36... Kh5 $1 $19 {[%cal Rh5h4]} 37. h3 (37. Qxc7 Rxe2 38.
Qd8 Nf2+ 39. Kg1 Nh3+ 40. Kh1 Rff2 $19) 37... Rh2+ 38. Kg1 Rxh3 39. Qxc7 Rc3)
37. Qxc7 $11 {The position is equal.} Rxe2 38. Rd6 Nf2+ (38... Rxa2 $2 39.
Rxf6+ Nxf6 40. Qb8 $18) 39. Kg2 $1 {aiming for Rxf6+.} Ng4+ (39... Rxa2 $2 40.
Rxf6+ gxf6 41. Qb8 $18) 40. Kg3 {Strongly threatening Rxf6+.} Re3+ (40... Rxa2
$2 41. Qd8 $18) 41. Kg2 $1 (41. Kh4 $2 Nh6 $19) 41... Re2+ 42. Kg3 {Hoping for
Rxf6+.} Re3+ ({Avoid the trap} 42... Rxa2 $2 43. Qd8 $18) 43. Kg2 $1 {
Threatens to win with Rxf6+.} ({Don't go for} 43. Kh4 $2 Nh6 $19) 43... Re2+
44. Kg3 {And now Rxf6+ would win.} Re3+ {Weighted Error Value: White=0.36/
Black=0.23} ({Wrong is} 44... Rxa2 $2 45. Qd8 $18) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.48"]
[White "Van Foreest, Lucas"]
[Black "Tari, Aryan"]
[Result "1/2-1/2"]
[ECO "E34"]
[WhiteElo "2543"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,63,19,17,16,21,20,26,21,25,38,28,33,34,29,23,46,27,48,39,44,27,25,21,
25,23,29,24,32,0,0,0,0,0,0,0,0,0,13,13,9,14,10,0,0,0,2,0,0,0,8,8]} 1. d4 Nf6 2.
c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 Qxd5 6. e3 c5 7. Bd2 Bxc3 8. bxc3 O-O {
E34: Nimzo-Indian: Classical: 4...d5.} 9. Nf3 Nc6 10. Be2 cxd4 {White has an
edge.} 11. cxd4 b6 {[#]} 12. Bd3 $146 ({Predecessor:} 12. O-O Bb7 13. Rfc1 Rac8
14. Qd3 {1/2-1/2 (14) Abello,E-Castro,E (1940) Barranquilla 1999}) 12... Qd6
13. O-O Bb7 14. Qb2 Qd5 15. Qb3 Ne4 16. Qxd5 exd5 17. Rab1 Nxd2 18. Nxd2 g6 19.
Rfc1 Rfc8 20. Rc3 Kf8 21. Rbc1 Ke7 {The position is equal.} 22. f3 Kd6 23. Kf2
Nb4 24. Bb1 Rxc3 25. Rxc3 Rc8 26. Rxc8 Bxc8 $11 {[%mdl 4096] Endgame KBN-KBN}
27. e4 f6 28. Ke3 Be6 29. a3 Na6 30. h4 Nc7 31. Bd3 Bf7 32. Nb1 {Weighted
Error Value: White=0.05/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.49"]
[White "Saric, Ivan"]
[Black "Suleymanli, Aydin"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "2644"]
[BlackElo "2541"]
[Annotator "TA"]
[PlyCount "161"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,161,21,10,15,17,30,12,27,27,33,32,41,48,59,50,50,55,114,110,243,241,
243,233,237,221,522,577,565,529,574,563,531,361,363,354,350,352,343,290,285,
274,299,290,264,241,250,237,241,225,288,159,159,159,159,159,168,168,158,158,
196,196,196,190,231,231,218,196,210,193,193,195,196,196,255,202,251,252,251,
209,226,204,305,208,220,122,150,142,142,142,168,133,133,133,133,133,133,133,
179,179,179,179,179,179,547,518,437,421,1325,1318,1296,923,741,547,6481,6430,
6003,5992,5481,6255,6356,5851,29964,29963,29963,1366,5259,1329,1206,1138,1033,
968,932,907,29960,29965,29965,881,29964,29966,29965,29966,29967,29966,29978,
29979,29979,29976,29976,29977,29985,29986,29989,29990]} 1. e4 c6 2. Nf3 d5 3.
Nc3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. Be2 Nf6 {B11: Caro-Kann: Two Knights
Variation.} 7. O-O Be7 8. d3 {[#]} d4 $146 {The position is equal.} ({
Predecessor:} 8... O-O 9. Qg3 Kh8 10. e5 Nfd7 11. f4 c5 12. Bg4 Nc6 13. Ne2 b5
14. c3 g6 {1-0 (58) Venkatesh,M (2480)-Triapishko,A (2519) Madurai 2019}) 9.
Nb1 {[%cal Bc3b1,Bb1d2,Bd2c4,Bc4a5][%mdl 32]} Qc7 10. a4 Nbd7 11. c3 Nc5 12.
Nd2 (12. cxd4 $6 Nb3 $15) 12... Rd8 13. Nc4 b5 {[#]} (13... Nfd7 $14) 14. Bf4
$1 Qb7 (14... Qd7 $16) 15. axb5 cxb5 {[#]} 16. Na5 {[%cal Ra5b7]} Qb6 17. Qg3
Na4 $2 (17... e5) 18. Bc7 $18 {[%mdl 64] Double Attack} Qa6 19. e5 Nd5 20. Bxd8
Bxd8 {[#]} 21. c4 $1 Ne7 22. Nb3 Nf5 23. Qf4 Qb6 24. cxb5 Nc5 25. Nxc5 (25.
Nxd4 g5 $15) 25... Qxc5 26. Bg4 Ne7 27. Rfc1 Qxb5 28. Qxd4 O-O 29. Qd6 ({Resist
} 29. Rxa7 $6 Nc6) 29... Ng6 30. Bh5 ({Better is} 30. Rxa7 $18 Qxe5 31. Qxe5
Nxe5 32. Be2) 30... Bb6 $16 31. Bxg6 hxg6 32. d4 Qxb2 33. Rd1 Rd8 34. Qe7 Qb3
35. Rac1 Qa4 36. Rd3 Re8 37. Qh4 Rd8 38. Rcd1 Rd5 39. Qe7 Rd8 40. g3 Qc6 41.
Qh4 a5 (41... Rd7 {was called for.} 42. Qf4 Rd8) 42. Qf4 a4 43. Qd2 Rd5 44. Qb4
{Rc3 is the strong threat.} Ba5 45. Qa3 Bb6 (45... Qb5 {was worth a try.} 46.
Qa2 Bb4) 46. Rc1 Qd7 47. Rb1 (47. Rdc3 $18) 47... Bc5 48. Rb8+ (48. dxc5 Rxd3
49. c6 Qd4 $11) 48... Kh7 49. Qc1 {Strongly threatening Qf4.} ({Much worse is} 
49. dxc5 $6 Rxd3 50. Qb4 Rd4 $11) 49... Ba7 ({But not} 49... Bxd4 $2 50. Qg5
$18) 50. Ra8 Qb7 51. Qc8 Qxc8 52. Rxc8 {Black must now prevent Rc4.} Bxd4 {
[%mdl 4096] Endgame KRR-KRB} 53. Kg2 g5 54. Ra8 Bxe5 55. Rxd5 exd5 56. Rxa4 $18
{KR-KB} f6 $2 (56... Bc3 {is tougher.} 57. Ra6 d4) 57. Ra5 d4 58. Kf3 Bc7 (
58... d3 $142 59. Rd5 Kg6 60. Rxd3 Kf7 61. Rd7+ Kg6) 59. Rb5 Kh6 60. Ke4 Be5
61. Rb7 Kh7 62. Rd7 Kg6 63. g4 Bf4 64. Rxd4 Bc1 65. Ra4 Bd2 66. Kd5 Kf7 67. Kd6
(67. Ra7+ $142 Kg6 68. Ke4 Be1 69. f4 gxf4 70. Kxf4 Bf2 71. Ra8 Bh4 72. Rh8)
67... Be1 68. f3 (68. Ra7+ $142 Kg6 69. Ra2) 68... Bf2 69. Rc4 Bg3+ 70. Kd7 Bf2
71. Rc7 Bb6 72. Rb7 Be3 73. Kd8+ (73. Kd6+ $142 Kg6 74. Kd5 Bc1 75. Rb3 Kf7 76.
Ke4 Kg6 77. Kd4 Bf4 78. Kd5) 73... Kg6 74. Ke7 {White mates.} Bc5+ 75. Ke6 Ba3
76. Rb5 Bc1 77. Rb3 Bf4 78. Rd3 Bg3 79. Ke7 f5 80. Re3 fxg4 81. hxg4 {Weighted
Error Value: White=0.15/Black=0.29} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.50"]
[White "Vokhidov, Shamsiddin"]
[Black "Deac, Bogdan-Daniel"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2521"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,118,2,24,9,11,16,13,8,16,6,7,0,0,0,20,-18,0,0,0,0,0,-14,0,-50,-50,-52,
-54,-54,-48,-59,-60,-90,-90,-89,-101,-91,-93,-92,-73,-70,-72,-73,-70,-100,-72,
-83,-66,-99,-77,-78,-77,-73,-75,-82,-62,-103,-98,-164,-164,-162,-166,-159,-114,
-101,-73,-73,-71,-70,-60,-61,-59,-60,-66,-67,-60,-60,-60,-60,-60,-118,-79,-79,
-64,-76,0,-79,-79,-93,-40,-47,-26,-30,0,0,0,-95,-95,-95,-95,-95,-95,-95,-95,
-95,-95,-95,-95,-95,-95,-95,-95]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. Ba4 Ngf6 5.
O-O e6 6. Qe2 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} Qa5 {
[#]} 7. Bb3 $146 ({Predecessor:} 7. Nc3 Be7 8. d3 O-O 9. Bg5 Qc7 10. Rae1 a6
11. Bxd7 Bxd7 12. e5 dxe5 13. Nxe5 {0-1 (58) Iljiushenok,I (2539)-Matlakov,M 
(2685) Sochi 2020}) 7... b5 8. d3 {The position is equal.} Bb7 9. Bf4 Be7 10.
Nbd2 a6 11. c3 O-O 12. d4 Rfc8 13. e5 dxe5 14. dxe5 Nd5 15. Bg5 Qd8 16. Ne4 {
[#]} Nxc3 $1 17. bxc3 Bxe4 18. Qxe4 {And now Rad1 would win.} Bxg5 19. Rfd1 Be7
20. a4 {[#] aiming for axb5.} Rab8 21. axb5 axb5 22. h4 Qc7 23. h5 h6 24. Bc2 {
White threatens Qh7+ and mate.} Nf8 25. g3 b4 26. c4 b3 27. Bd3 Rd8 (27... f5 {
seems wilder.} 28. Qe2 Rb4 29. Rdb1 Qb7 30. Rb2 Nd7) 28. Rab1 Qb7 (28... Qa5 {
with more complications.} 29. Ne1 Rd7 30. Rb2 Qc3 31. Rdb1 Bg5) 29. Qxb7 Rxb7
30. Rb2 Rb4 31. Kf1 f6 32. Ke2 Nd7 33. Ke3 (33. Rdb1 $17) 33... Nxe5 $19 34.
Nxe5 fxe5 35. Be2 Bg5+ 36. f4 exf4+ 37. gxf4 Bf6 {...Rxd1 is the strong threat.
} (37... Be7 {feels hotter.} 38. Rxd8+ Bxd8 39. Bd1 Rxc4 40. Bxb3 Rc3+) 38.
Rxd8+ Bxd8 $17 {[%mdl 4096] Endgame KRB-KRB} 39. Bd1 Kf7 40. Bxb3 Bf6 41. Rb1
Bd4+ 42. Kf3 Kf6 43. Kg4 Be3 44. Kg3 ({White should try} 44. Kf3 $15 Bd2 45.
Kg4) 44... Bd2 45. Kf3 Kf7 46. Ke4 Kf6 47. Kf3 $1 Ke7 48. Ke4 Bc3 (48... Rb6
$17 {Hoping for ...Rd6.} 49. f5 Rd6 50. fxe6 Kxe6) 49. f5 e5 50. Bc2 Bd4 ({
Stronger than} 50... Rxc4+ 51. Kd3 $16) 51. Rxb4 cxb4 $11 {KB-KB} 52. c5 (52.
Kd5 $11) 52... Bxc5 $17 {Black is better.} 53. Kxe5 Bf2 54. Ba4 Bg3+ 55. Kd5
Kf6 56. Kc4 Bd6 57. Be8 Kxf5 58. Bg6+ Kf4 59. Kb3 Ke5 {White happily takes the
draw.  Weighted Error Value: White=0.12/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.51"]
[White "Paravyan, David"]
[Black "Morovic Fernandez, Ivan"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2642"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,65,34,42,-7,22,34,39,24,14,24,22,0,58,37,50,5,11,0,0,0,0,0,0,0,0,0,
10,10,16,0,0,0,7,5,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4
cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Qb6 10. a3
{B45: Sicilian Four Knights.} (10. c4 $5 {[%cal Rc4d5]}) 10... f5 11. exf6 $1
Nxf6 12. Nxf6+ {White is slightly better.} gxf6 13. Qh5+ Kd8 14. Bd3 f5 ({
Black should try} 14... d5 $11) 15. Bd2 $14 {[#] aiming for Bc3.} Bc5 16. b4
Be3 {The position is equal.} 17. Qe2 Bxd2+ {[#]} 18. Kxd2 $146 ({Predecessor:} 
18. Qxd2 a5 19. Rd1 axb4 20. axb4 Re8 21. h4 Ra3 22. Kf1 Qd4 23. Rh3 Rg8 24.
Rf3 {1/2-1/2 (62) Adams,M (2715)-Zhou,Y (2444) Sheffield 2011}) 18... a5 19.
Qe3 Qxe3+ 20. Kxe3 Bb7 21. Rhb1 Kc7 22. g3 Ra7 23. c4 axb4 24. axb4 Rha8 25.
Rxa7 Rxa7 $11 {[%mdl 4096] Endgame KRB-KRB} 26. c5 Ra2 27. h3 Ba6 28. Bxa6 Rxa6
29. g4 Ra3+ 30. Kd4 fxg4 31. hxg4 Rg3 32. g5 {Threatens to win with Rh1.} h6
33. gxh6 {Weighted Error Value: White=0.08/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.52"]
[White "Budisavljevic, Luka"]
[Black "Bluebaum, Matthias"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "2508"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,86,10,25,18,28,-6,-6,0,-4,-8,-4,-21,-13,-31,-15,-58,-58,-50,-39,-42,
-49,-42,-42,-165,-160,-166,-161,-211,-195,-301,-297,-286,-287,-293,-293,-293,
-293,-293,-286,-285,-285,-340,-338,-340,-358,-362,-362,-345,-356,-355,-344,
-366,-364,-412,-410,-619,-620,-628,-536,-765,-755,-1418,-1276,-5022,-3902]} 1.
e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8. Nb3
Nc6 9. Nbxd4 Nxd4 10. Qxd4 Qxd4 11. Nxd4 Bd7 $1 {11...Bd7 scores better than
11...a6.} 12. Be2 Rc8 13. Bf3 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5
Qxd5.} Bc5 14. Nb3 Bb6 15. c3 {The position is equal.} Bc6 16. Bxc6+ Rxc6 17.
Bf4 Nd5 {[#]} 18. Bg3 $146 ({Predecessor:} 18. Be5 f6 19. Bd4 Kf7 20. Rad1 Re8
21. Rd2 e5 22. Bxb6 Nxb6 23. Na5 Rc7 24. Rfd1 {0-1 (55) Bentsen,H (2088)
-Roulet Dubonnet,E (2084) Fagernes 2021}) 18... h5 19. h4 Ne7 20. Be5 Ng6 21.
Bg3 Rc4 22. a4 $1 a6 23. Nd2 {Now White is beyond hope.} (23. Rfd1 $15) 23...
Rg4 $19 {aiming for ...Rxg3.} 24. Kh2 Nxh4 25. f3 {[#]} Nf5 $1 26. a5 (26. Be1
{was the only chance.}) 26... Nxg3 27. fxg4 Nxf1+ 28. Nxf1 hxg4+ {[%mdl 4096]
Endgame KRB-KRN} 29. Kg3 Bc7+ 30. Kxg4 Rh1 31. Kf3 {[#]} Bxa5 $1 {[%mdl 512]}
32. Ke2 (32. Rxa5 Rxf1+) 32... Bc7 33. Ra4 f5 34. Rc4 Kd7 35. Rd4+ Bd6 36. Ne3
{With the idea Nc4.} Ke7 37. Nc4 Bc7 38. Rd3 b5 39. Nd2 (39. Ne3 $142) 39...
Rg1 {Black is clearly winning.} 40. Kf3 e5 41. Rd5 e4+ 42. Kf2 Bb6+ 43. Kg3 Ke6
{Weighted Error Value: White=0.62/Black=0.04} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.53"]
[White "Gukesh D"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2640"]
[BlackElo "2484"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,121,10,4,-12,16,2,27,0,0,0,0,0,0,0,0,0,0,-23,53,22,25,22,22,32,22,23,
31,25,29,32,29,29,25,32,29,32,29,15,18,19,56,56,135,136,147,156,141,144,146,
153,155,157,142,147,146,154,154,154,154,143,147,158,147,137,183,179,184,136,
239,225,303,291,263,185,196,163,170,148,207,181,234,234,234,234,502,502,494,
495,565,546,503,456,1334,1285,1077,533,1277,1169,1987,1916,1377,370,29965,
29957,7061,5763,4845,2305,29985,29986]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3
dxc4 5. Qa4+ c6 6. Qxc4 b5 7. Qd3 Bb7 8. e4 {D43: Semi-Slav: 5 Bg5 h6.} b4 9.
Na4 Nbd7 10. Bg5 {White has an edge.} Qa5 11. b3 c5 12. Bxf6 gxf6 13. Be2 O-O-O
14. O-O Kb8 {[#]} 15. Rfd1 $146 ({Predecessor:} 15. d5 Bd6 16. dxe6 Nb6 17.
Nxb6 Bxh2+ 18. Nxh2 Rxd3 19. Nc4 Qd8 20. e7 Qd4 21. Bxd3 Qxd3 {1-0 (48)
Georgiev,K (2685)-Ivanisevic,I (2596) Zlatibor 2006}) 15... Bh6 (15... cxd4 $11
16. Nxd4 (16. Qxd4 Be7 $15) 16... Be7) 16. Qc4 {[%cal Rd4c5]} cxd4 $1 17. Rxd4
Nb6 18. Qc5 Qxc5 19. Nxc5 Rxd4 20. Nxd4 Rc8 21. Nxb7 Kxb7 22. Bh5 Rc7 23. g3
Nc8 24. Rd1 Rd7 25. Kf1 Bf8 26. Ke2 Kb6 27. Nf3 Nd6 {White leaves nothing to
chance now.} (27... Rxd1 $14 28. Kxd1 Bc5) 28. e5 $16 fxe5 29. Nxe5 Rc7 {[#]}
30. Bxf7 {[%mdl 512]} Rc2+ 31. Rd2 Rxd2+ 32. Kxd2 {[%mdl 4096] Endgame KBN-KBN}
Bg7 33. Nd7+ Kc6 34. Bxe6 Ne4+ 35. Ke3 Nc3 36. Kd3 Kd6 37. Bf5 Nxa2 38. Kc4 a5
39. Nc5 h6 40. Bd3 Kc6 (40... Nc3 $16 41. Bc2 Bf6) 41. Be4+ $18 Kb6 42. f4 Nc3
43. Bf3 Nb1 {Threatens to win with ...Nd2+.} 44. Na4+ Kc7 {And now ...Nd2+
would win.} 45. Kd5 Nd2 {[#]} (45... Kd7 $16 {might work better.} 46. Nb6+ Kc7)
46. Bd1 $1 Kd7 (46... Nf1 $142) 47. Nb6+ Ke7 48. Nc4 Nf1 (48... Nb1 {is a
better defense.}) 49. Be2 Nxh2 50. Nxa5 Bc3 51. Nc4 Kf6 52. Nd6 Be1 (52... h5
$142 53. Ne4+ Ke7) 53. g4 Bc3 54. Ne4+ Ke7 55. Kc4 Be1 56. f5 Kf7 57. Kd4 Kg7
$2 (57... Ke7 $18 58. Kc4 Kf8) 58. Ke5 Kf7 59. f6 Bc3+ 60. Kf5 Bd4 61. g5 {
Weighted Error Value: White=0.05/Black=0.52} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.27"]
[Round "1.54"]
[White "Miezis, Normunds"]
[Black "Sasikiran, Krishnan"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "2467"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,73,6,6,2,0,2,1,0,0,7,6,16,0,0,7,-7,-4,0,-7,-26,-36,-51,-36,-53,0,-80,
-68,-72,-69,-78,-60,-64,-54,-57,-48,-41,0,-89,29,41,27,0,0,0,0,0,0,0,0,0,68,76,
53,33,58,6,7,0,60,0,8,0]} 1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 d6 5. d3 Ne7 6.
e4 c5 7. Nge2 Nbc6 8. a3 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7.} a6 9.
O-O O-O 10. Rb1 Rb8 11. b4 cxb4 12. axb4 b5 13. cxb5 axb5 14. Be3 Nd4 15. Qd2
Bg4 16. f3 Be6 17. f4 {[#]} Ra8 $146 ({Predecessor:} 17... Qd7 18. Bf2 Nxe2+
19. Nxe2 Rfc8 20. Rfc1 Ra8 21. Rxc8+ Rxc8 22. Rc1 Rxc1+ 23. Qxc1 Qc6 24. Qb1
Qc7 25. fxe5 dxe5 {1-0 (41) Hoogland,D (2098)-Bowmer,K (2041) Vale 2017}) 18.
Rf2 Qd7 ({Black should try} 18... Ra6 $15) 19. Rbf1 (19. f5 $1 $11 gxf5 20.
exf5 Ndxf5 21. Bxa8 Rxa8 22. Bg5) 19... Nxe2+ $17 20. Nxe2 Ra2 21. Qe1 Rc8 22.
fxe5 dxe5 23. Bc5 Bf8 24. Nc3 Ra3 25. Nd5 (25. d4 $11 exd4 26. Nd5 Nxd5 27.
exd5 Bxd5 28. Qe5 {[%mdl 64] Double Attack} Rxc5 29. bxc5) 25... Bxd5 (25...
Nxd5 $17 26. exd5 Bxc5 27. bxc5 Bxd5 28. Qxe5 Rxd3 29. Bxd5 Rxd5) 26. exd5 $11
Nf5 27. Qxe5 {[%cal Rf2f5] [#] And now Rxf5 would win.} Rxc5 28. Rxf5 gxf5 29.
bxc5 Bxc5+ 30. d4 Bd6 31. Qf6 Qe7 ({Black should play} 31... f4 $11) 32. Qxf5
$14 Re3 33. Qg4+ Kh8 34. Qc8+ (34. Qh5 $14) 34... Kg7 $1 $11 35. Qg4+ (35. Rf2
$11) 35... Kh8 $14 36. Qc8+ (36. Qh5 $14) 36... Kg7 $1 $11 37. Qg4+ {Weighted
Error Value: White=0.21/Black=0.14} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.1"]
[White "Nihal Sarin"]
[Black "Caruana, Fabiano"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "2652"]
[BlackElo "2800"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,113,0,2,6,31,20,37,17,29,0,0,-33,-28,-30,0,-152,-145,-121,-132,-138,
-143,-127,-142,-138,-151,-130,-122,-139,-129,-137,-96,-107,-68,-118,-107,-110,
-110,-113,-110,-102,-99,-95,-77,-85,0,-94,0,-93,-59,-54,-58,-69,-32,-84,-70,
-66,-6,-6,0,-6,-6,-6,-6,-10,-5,-20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-30,0,0,0,0,0,
0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. Nf3 a6 6. cxd5 exd5 7. Be2
Nc6 8. O-O Bd6 9. dxc5 Bxc5 10. b3 O-O 11. Bb2 Ba7 12. Rc1 Re8 13. h3 {[#] D32:
Tarrasch Defence: Sidelines and lines without g3.} Qd6 $146 ({Predecessor:} 
13... Be6 14. Ng5 Bf5 15. Bd3 Bg6 16. Bxg6 hxg6 17. Ne2 Ne4 18. Nxe4 dxe4 19.
Qxd8 Raxd8 20. Rcd1 Nb4 {0-1 (46) Lakicevic,B (2027)-Chelushkina,I (2320)
Valjevo 2010}) 14. Bd3 Bd7 15. Ne2 {White is slightly better.} Rad8 16. Ned4
Ne4 17. Qe2 Bb8 18. Rfd1 Qg6 19. Nh4 $2 (19. Nxc6 $11 bxc6 20. Nh4) 19... Nxd4
$17 20. Bxd4 {[#]} Qh6 {[%cal Rh6h4]} 21. Nf3 {[#]} Bxh3 $1 22. gxh3 Qxh3 {
Threatens to win with ...Rd6.} 23. Qf1 Qxf3 24. Qg2 Qxg2+ 25. Kxg2 h6 26. b4
Re6 27. a4 h5 28. Rc2 Be5 29. Bxe5 Rxe5 30. Rc7 Nd6 31. Be2 Rg5+ 32. Kf1 Rf5
33. Kg2 Rg5+ 34. Kf1 $1 Rf5 35. Kg2 $1 b5 36. axb5 Nxb5 37. Rc5 Rb8 38. Bf1 (
38. e4 $15 Rg5+ 39. Kh3) 38... Rg5+ 39. Kh2 Rg4 (39... g6 $15) 40. Rdxd5 $11
Rxb4 41. Rxh5 g6 42. Rhd5 Kg7 43. Kg3 Rb6 44. Bd3 Rb2 45. f3 Rb3 46. e4 Rd6 (
46... Rb7 {seems wilder.} 47. e5 Ra3 48. Rc8 Na7 49. Re8 Nc6) 47. Rxb5 Rxd3 48.
Rxd3 Rxd3 {[%mdl 4096] Endgame KR-KR} 49. Rb6 a5 50. Ra6 Ra3 51. e5 a4 52. Ra7
Kf8 53. Kg4 {The position is equal.} Re3 54. Kf4 $1 {[%cal Rf4e3]} Ra3 55. Kg4
Re3 56. Kf4 Ra3 57. Kg4 {Black had all chances to win.  Weighted Error Value:
White=0.11/Black=0.16} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.2"]
[White "Swiercz, Dariusz"]
[Black "Firouzja, Alireza"]
[Result "0-1"]
[ECO "B93"]
[WhiteElo "2647"]
[BlackElo "2770"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,122,0,-10,0,-22,-20,0,0,-15,-15,-27,-5,-11,-4,-34,-14,-50,-50,-35,
-35,-53,-27,-15,-21,-20,-13,-54,-25,-62,31,14,43,25,73,64,128,146,113,0,34,40,
42,50,153,164,220,182,156,-27,-18,-68,-54,-86,-94,-80,-29,-93,-64,-66,-66,-66,
-77,-90,-87,-106,-106,-113,-113,-110,-111,-145,-146,-151,-160,-233,-167,-230,
-218,-239,-231,-253,-221,-222,-112,-146,-170,-215,-85,-81,-81,-495,-492,-634,
-460,-29980,-29981,-29983,-29970,-5919,-5836,-5281,-4910,-1608,-590]} 1. e4 c5
2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Qc7 8. Bd3 Be7 9.
O-O O-O 10. Kh1 Nbd7 11. a4 Nc5 {B93: Sicilian Najdorf: 6 f4.} 12. a5 Bd7 13.
Be3 {[#]} Rae8 $146 {The position is equal.} ({Predecessor:} 13... Rac8 14. f5
Bc6 15. Bxc5 dxc5 16. Qe2 c4 17. Bxc4 Bxe4 18. Bxf7+ Rxf7 19. Nxe4 Qxc2 20.
Qxc2 Rxc2 {1/2-1/2 (40) Schenning,A (2084)-Morcin,T (2115) LSS email 2012}) 14.
Qd2 exf4 15. Bxf4 Bc6 {[%cal Rf6e4]} 16. Rfe1 Nh5 17. Be3 Bf6 18. Bd4 Bxd4 19.
Nxd4 Nf6 {[%cal Rc5e4]} 20. Nf5 {Hoping for Nxg7!} Re5 {[%cal Rc5e4]} 21. Qg5 {
[%csl Gf5][%cal Rg5g7]} Ne6 22. Qh4 Qd8 23. Rf1 Kh8 (23... Rxa5 $2 24. Rxa5
Qxa5 25. Ne7+ (25. Nxg7 Qg5 $14) 25... Kh8 26. e5 $18) 24. Rae1 Ng8 ({Reject} 
24... Qxa5 $6 25. Nxg7 $1 Nxg7 26. Rxf6 $16 (26. Qxf6 Qd8 $16)) (24... Rxa5 $15
25. Bc4 Re5) 25. Qg3 $14 g6 26. Ne3 Nf6 27. Nc4 $1 {[%cal Rc4e5]} Nh5 28. Qe3
$1 $16 Rg5 29. Re2 (29. Rd1 $16) 29... Rg4 30. Ref2 Qh4 31. Ne2 Qe7 (31... f5
$1 $14) 32. Nd4 Kg8 (32... Nd8 {might work better.}) 33. Nxc6 bxc6 34. e5 $2 (
34. Be2 $1 $16 {[%cal Re2g4]} Rg5 35. b4) 34... Qh4 $11 35. Rf3 {Threatens to
win with g3.} Rxc4 36. Bxc4 Qxc4 37. exd6 Qd5 (37... Nhg7 $1 $17 38. Qd3 Qb4)
38. Qf2 (38. Qb6 $11) 38... Ng5 ({Don't play} 38... Qxd6 $6 39. Rxf7 Nhf4 40.
Rxf8+ Qxf8 41. Qa7 $14) 39. Rd3 Qxa5 40. d7 Ne6 $1 41. Rd6 Nhg7 42. Rxc6 {
And now Rc8! would win.} Qd5 $1 {[%csl LRc6,LRd7]} 43. Rxa6 Qxd7 44. Ra7 Qe8
45. c4 Nf5 46. b4 Qc6 47. Rc1 (47. c5 $17) 47... Ned4 $19 48. Ra2 (48. c5 $142)
48... Re8 49. Rb2 Qe4 50. b5 Ne3 51. Qe1 {[#] If White can now play b6 this
consolidates a bit.} Qf4 ({Black should try} 51... Nb3 $1 $19 {[%mdl 512]} 52.
Rcb1 Nc5) 52. Qg3 Qf6 {White must now prevent ...Ndf5!} 53. Re1 Kg7 54. Qf2 $17
{[#] Qxf6+ is the strong threat.} Ndf5 $1 $40 {[%mdl 128] Strongly threatening
...Ng4. Black is out for blood.} 55. Rbb1 $2 {[%mdl 8192] [#]} (55. h3 $17 {
was the crucial defense.}) 55... Ng4 $1 $19 {[%cal Rg4f2][%mdl 512]} 56. Qf4 {
[#]} (56. Qd2 Rxe1+) 56... Qh4 $1 {[%mdl 512]} 57. Rf1 {[#]} (57. Rxe8 $19 Nf2+
{[%mdl 64] Discovered Attack} 58. Qxf2 Qxf2 59. Rbe1) 57... Re4 $1 {[%mdl 512]}
58. Qc7 {[#]} (58. Qxg4 Rxg4) 58... Nxh2 $1 {[%mdl 512]} 59. Kg1 Nxf1 {Black
is clearly winning.} 60. Rxf1 Rxc4 61. Qe5+ Qf6 {What a bad dream for White. 
Weighted Error Value: White=0.46/Black=0.22} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.3"]
[White "Saric, Ivan"]
[Black "Alekseenko, Kirill"]
[Result "1-0"]
[ECO "C89"]
[WhiteElo "2644"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,97,29,24,19,38,37,39,29,37,40,41,33,52,44,87,82,80,92,80,91,93,83,90,
89,89,93,93,94,102,102,108,110,110,117,179,184,186,180,179,149,152,158,174,165,
153,153,158,122,300,300,300,300,260,253,408,408,408,408,408,408,385,370,12820,
12796,12503,7921,29958,29954,29955,29951,29958,29956,6091,5431,29959,29958,
6097,5214]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7.
Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d3 {C89: Closed
Ruy Lopez: Marshall Attack.} a5 {[#]} 13. Re1 $146 ({Predecessor:} 13. Bxd5
cxd5 14. Bf4 Bf6 15. Re1 d4 16. Be5 Bxe5 17. Rxe5 Ra6 18. a4 Rg6 19. g3 dxc3
20. Nxc3 b4 21. Nd5 Re6 22. d4 Rxe5 23. dxe5 Be6 24. Nf4 Qxd1+ 25. Rxd1 Bb3 26.
Rd6 Rc8 {1/2-1/2 (26) Holroyd,K (2493)-Sasikiran,K (2554) ICCF email 2018})
13... a4 14. Bc2 {White is slightly better.} Bf5 15. a3 Re8 16. Nd2 {[%cal
Bb1d2,Bd2e4,Be4g3][%mdl 32]} Bg6 17. Ne4 f5 {[#]} 18. Ng3 Bd6 19. Rxe8+ Qxe8
20. Bd2 Ra7 21. Qf1 Re7 22. Re1 f4 23. Rxe7 Qxe7 24. Ne4 f3 25. g3 Nf6 26. Bg5
Bxe4 27. dxe4 h6 (27... Bc5 $16 {might work better.} 28. Bxf6 Qxf6) 28. Bxf6
$18 Qxf6 29. Qd3 g5 30. h3 h5 31. e5 $1 {[%cal Re5f6]} Qxe5 32. Qxf3 h4 {
[%cal Rh4g3]} 33. gxh4 ({Resist} 33. Qxc6 $6 hxg3 34. Qf3 gxf2+ 35. Kxf2 Kg7
$14) 33... gxh4 34. Be4 ({Don't take} 34. Qxc6 $6 Qh2+ 35. Kf1 Qxh3+ 36. Qg2+
Qxg2+ 37. Kxg2 Bf4 $14) 34... Qg5+ $2 {Black cannot hold the game after this.}
(34... c5 $16 {was necessary.} 35. Qg4+ Kf8 36. Qxh4 Be7) 35. Qg2 Qxg2+ 36.
Kxg2 {[%mdl 4096] Endgame KB-KB} c5 37. Bc6 b4 $2 (37... Bf4 {keeps fighting.}
38. Bxb5 Bc1) 38. axb4 cxb4 39. cxb4 Bxb4 40. Bxa4 Kg7 41. f4 Bd6 $2 (41... Kf7
42. Kf3 Be7 43. Bb3+ Kf6) 42. Kf3 Kf6 43. Ke4 Bb4 44. Bd7 Bd6 45. Bg4 Bb4 46.
Kd5 Bd2 {[#]} 47. f5 $1 Be1 48. Kc5 Bf2+ 49. Kb5 {Weighted Error Value:
White=0.02/Black=0.39} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.4"]
[White "Maghsoodloo, Parham"]
[Black "Gukesh D"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2701"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,95,9,31,29,31,23,16,16,16,16,16,16,26,16,15,10,28,31,34,14,22,17,47,
-20,-20,-20,-23,-22,-27,-18,0,-23,0,0,8,-70,-8,-11,-18,-8,-25,-15,0,0,0,0,0,0,
0,-3,0,0,0,-25,-18,-17,-20,-15,-10,-16,-14,-16,-19,-14,-13,-72,-8,-8,-8,-8,-8,
-8,-8,-8,-8,-8,-8,-8,-8,-8,0,-8,0,-8]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7
5. Bg2 O-O 6. O-O dxc4 7. Qc2 b5 8. a4 {E05: Open Catalan: 5 Nf3 Be7.} b4 9.
Nfd2 Nd5 $1 {[%mdl 4] is now more promising than 9...c6.} 10. Nxc4 c5 11. dxc5
Ba6 12. Ne3 Nd7 $1 13. Nxd5 exd5 14. c6 Rc8 15. Bf4 Nc5 16. Rd1 d4 17. h4 h6 {
[#]} 18. c7 $146 ({White should try} 18. Bf3 $14) ({Predecessor:} 18. Bf3 Re8
19. Nd2 Bf8 20. Nb3 d3 21. exd3 Bxd3 22. Qxc5 Bxc5 23. Nxc5 Qf6 24. Rxd3 Qf5
25. Rd5 {1-0 (25) Nguyen,T (2569)-Deac,B (2625) Chess.com INT 2020}) 18... Qd7
$1 $11 19. Nd2 Bxe2 20. Rdc1 Nd3 21. Qc6 $1 {[%cal Rc6d7]} Bg4 22. Re1 Bc5 {
White must now prevent ...Qxc6.} 23. Qxd7 Bxd7 24. Nb3 (24. Bb7 $11) 24... Nxf4
({Black should play} 24... Nxe1 $15 25. Nxc5 Nxg2 26. Kxg2 Bc6+ 27. Kf1 Bf3)
25. Nxc5 Nxg2 (25... Rxc7 $6 26. Nxd7 Nxg2 27. Re7 $16) 26. Re7 Bc6 {Strongly
threatening ...Rfe8.} ({Don't play} 26... Rxc7 $6 27. Nxd7 Kh8 28. Rd1 $16 (28.
Nxf8 Rxe7 29. Kxg2 Kg8 $14) (28. Kxg2 Rd8 $14)) 27. Rd1 Rfe8 28. Rxe8+ Bxe8 29.
Na6 Ne1 $1 {[%cal Re1f3]} 30. Rxe1 Bxa4 {[%mdl 4096] Endgame KRB-KRN} 31. Re5 {
[#] Threatens to win with Rd5.} Kf8 (31... Bb3 {with more complications.} 32.
Re7 Bc4 33. Nxb4 Kh7 34. Rd7 Bb5) 32. Rd5 {And now Rd8+ would win.} Ke8 33.
Rxd4 Bb5 34. Nxb4 Rxc7 35. Rd1 Rd7 36. Ra1 Rd4 37. Na2 Rd2 38. Nc3 a6 39. b4 (
39. Na4 $11) 39... Rb2 (39... Rd4 $17) 40. Rb1 {The position is equal.} Rxb1+
41. Nxb1 {KB-KN} Ke7 {...Kd6 is the strong threat.} 42. Nc3 Ke6 {[#] Hoping
for ...Ke5.} 43. f4 Kf5 44. Kf2 Bc6 45. Ke3 Kg4 46. Kf2 Kf5 47. Ke3 Kg4 48. Kf2
$1 {Weighted Error Value: White=0.10/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.5"]
[White "Artemiev, Vladislav"]
[Black "Brkic, Ante"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2699"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,67,-4,12,4,16,0,9,0,3,0,0,-1,12,16,10,4,32,0,2,8,3,0,18,14,20,18,23,
14,21,20,20,22,21,15,18,8,6,6,11,7,16,6,18,2,11,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1.
Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c3 c6 7. a4 {D02: 1 d4 d5 2
Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bf5 8. Bf4 Nbd7 9.
Nbd2 {[#]} h6 $146 ({Predecessor:} 9... a5 10. Qb3 Qb6 {1/2-1/2 (10) Donchenko,
A (2448)-Katalymov,B (2378) Naumburg 2002}) 10. Re1 g5 11. Be5 e6 12. Bd6 Re8
13. Ne5 Rc8 14. Nxd7 (14. a5 {is interesting.} c5 15. e3 b6 16. Bf1 Nf8 17.
Bxf8 Rxf8 18. Ba6) 14... Nxd7 15. e4 dxe4 16. Bxe4 Nf6 17. Bxf5 Qxd6 {[#]} 18.
Nc4 $1 Qc7 19. Bd3 Red8 {The position is equal.} 20. Qc2 c5 21. dxc5 Qxc5 {
White must now prevent ...Rxd3!} 22. Bf1 Rd7 23. Rad1 Rcd8 24. Rxd7 Rxd7 25.
Qe2 Nd5 26. a5 Ne7 27. Qf3 Nc6 28. Rd1 Rxd1 29. Qxd1 Qd5 30. Be2 Qxd1+ 31. Bxd1
Ne5 32. Nd6 Nd3 33. Nc4 Ne5 34. Nd6 {A rather calm draw.  Weighted Error Value:
White=0.05/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.6"]
[White "Bluebaum, Matthias"]
[Black "Wojtaszek, Radoslaw"]
[Result "1/2-1/2"]
[ECO "E48"]
[WhiteElo "2640"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,48,0,0,-10,0,-10,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-14,-13,-13,-24,-7,-10,
-16,-29,-14,-31,-22,-50,0,0,0,-27,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O
5. Bd3 d5 6. cxd5 exd5 7. Nge2 Re8 8. Bd2 {E48: Nimzo-Indian: Rubinstein: 5
Bd3 d5 including 6 Ne2, but excluding 6 a3.} Bd6 9. Qc2 a6 10. f3 {The
position is equal.} c5 11. dxc5 Bxc5 12. e4 {[#]} d4 $146 ({Predecessor:} 12...
Nc6 13. Nxd5 Ne5 14. O-O-O Nxd5 15. exd5 Nxd3+ 16. Qxd3 Re5 17. Ng3 Rxd5 18.
Qe4 Be6 {1/2-1/2 (39) Vitiugov,N (2727)-Korobov,A (2685) Yasnaya Polyana 2021})
13. Nd5 Nbd7 14. Bg5 Qa5+ 15. Bd2 Qd8 16. Nxf6+ Qxf6 17. O-O Ba7 18. Nf4 Nc5
19. Nd5 Qd8 20. Bf4 Bd7 21. Bc7 $1 {[%cal Rc7d8]} Qg5 22. Bf4 Qd8 23. Bc7 $1 {
[%cal Rc7d8]} Qg5 24. Bf4 Qd8 {Weighted Error Value: White=0.05/Black=0.05}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.7"]
[White "Kollars, Dmitrij"]
[Black "Kryvoruchko, Yuriy"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2621"]
[BlackElo "2686"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,60,14,23,10,26,24,18,12,16,17,25,25,13,23,22,26,18,22,12,8,10,14,22,
22,22,22,22,22,22,22,35,24,25,22,22,22,22,22,22,22,22,22,22,22,25,20,33]} 1. e4
e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5
O-O 9. Nc3 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} Bf6 10. Re1 Re8 11.
Nd5 Rxe1 12. Qxe1 b6 13. d3 Bb7 14. Nxf6+ Qxf6 15. Qe3 c5 16. c3 Nf5 17. Qf4 h6
18. Bd2 g5 {[#]} 19. Qg4 $146 ({Predecessor:} 19. Qc7 Qc6 20. Qxc6 Bxc6 21. Re1
Kf8 22. g3 Re8 23. Rxe8+ Kxe8 24. Bh3 Ng7 25. f4 {1/2-1/2 (36) Yu,Y (2721)
-Lysyj,I (2671) Baku 2015}) 19... Re8 20. f4 {[%cal Rf4g5]} Ne3 21. Qg3 Nxf1 ({
Wrong is} 21... Qxf4 $2 22. Re1 $18) 22. Rxf1 {[%cal Rf4g5]} Re2 23. fxg5 $40 {
[%mdl 128] Black needs to defend precisely.} Qd6 24. Rf2 $1 (24. Qxd6 {leads
to mate.} Rxg2+ 25. Kh1 Rxg5+ 26. Qd5 Bxd5+ 27. Rf3 Bxf3#) 24... Qxg3 25. hxg3
Rxf2 26. Kxf2 hxg5 27. Bxg5 $11 {KB-KB} Kf8 28. Bf4 Ke7 29. Bb8 Kd8 $1 30. Bd6
f5 {A rather calm draw.  Weighted Error Value: White=0.01/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.8"]
[White "Predke, Alexandr"]
[Black "Yakubboev, Nodirbek"]
[Result "1-0"]
[ECO "E71"]
[WhiteElo "2666"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,67,44,27,55,47,40,43,35,39,41,39,37,39,37,20,8,0,50,52,236,230,222,
225,347,339,400,404,394,385,363,338,302,320,317,313,373,374,374,318,205,99,199,
144,124,97,161,149,235,222,478,478,443,423,829,790,1053,1034,1546,1265]} 1. d4
Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Bg5 Nc6 {E71: King's Indian: 4
e4 d6 5 h3.} 7. Nf3 h6 8. Be3 e5 {White is slightly better.} 9. d5 Nd4 10. Nxd4
exd4 11. Qxd4 Ng4 {[#]} 12. hxg4 $146 ({Predecessor:} 12. Qd2 Nxe3 13. Qxe3 f5
14. O-O-O a6 15. Bd3 b5 16. exf5 bxc4 17. Bxc4 Bxf5 18. g4 Re8 19. Qg3 Be4 20.
Rhe1 Qf6 21. f4 Rab8 22. Rd2 Qxc3+ {0-1 (22) Potapov,A (2399)-Goluch,P (2231)
Pardubice 2014}) 12... Bxd4 13. Bxd4 Kh7 14. Be2 f5 $2 ({Black should play} 
14... g5 $14) 15. exf5 $1 $18 gxf5 {[#]} 16. Rh5 $1 {Strongly threatening g5.}
Kg6 (16... Rg8 $142) 17. Kd2 fxg4 18. Rah1 Bf5 19. Rxh6+ Kf7 {intending ...
Qg5+.} 20. R1h5 Ke7 21. Nd1 c5 22. Bc3 Kd7 23. Ne3 $1 {[%csl LRf5,LRg4][%mdl
64] Double Attack} Bb1 24. Bxg4+ Kc7 25. f3 (25. Kc1 $18 {has better winning
chances.} Be4 26. Re6) 25... Qe8 (25... a6 $16 {was necessary.}) 26. Rh1 (26.
Re6 $18 Qf7 27. Rh1) 26... Bg6 $16 27. Re1 {[%mdl 1024] White has strong
compensation.} Rg8 {[#]} (27... a6 $16 {was called for.}) 28. Be6 $1 $18 Qf8 (
28... Qe7 $16) 29. Reh1 {[%cal Be1h1,Bh1h4,Bh4g4][%mdl 32]} Re8 $2 (29... Qe7 {
might work better.} 30. f4 (30. Bxg8 Rxg8 31. Rh8 Rxh8 $16) 30... Raf8) 30.
R1h4 {White is clearly winning.} Rxe6 31. dxe6 Qe8 (31... Kc6 $142 32. Nd5 b5
33. Rxg6 Rxg6) 32. Nd5+ Kc6 33. Nf6 {[%mdl 64] Double Attack} Qe7 34. Rg4 {
Weighted Error Value: White=0.09/Black=0.57} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.9"]
[White "Petrosyan, Manuel"]
[Black "Ponkratov, Pavel"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2605"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,64,19,14,33,-18,0,-10,-21,-46,-33,-71,-63,-50,-41,-69,-45,-89,-85,
-120,-18,-14,-15,-52,-54,-58,-47,-75,-12,-23,-26,-29,-26,-77,0,-6,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6.
bxc3 Bg7 7. Bb5+ c6 8. Ba4 b5 9. Bb3 a5 {D85: Exchange Grünfeld: Unusual White
7th moves and lines with 7 Nf3.} 10. a4 ({Better is} 10. Nf3 $14) 10... b4 11.
Bb2 O-O {[#]} 12. cxb4 $146 ({Predecessor:} 12. Ne2 Ba6 13. O-O c5 14. c4 Nc6
15. Qc2 Nxd4 16. Nxd4 cxd4 17. Rad1 Rc8 18. f4 {0-1 (26) Alvarez Garcia,
J-Canon Lopez,M Asturias 1996}) 12... Na6 13. b5 cxb5 14. axb5 {[#]} Qb6 15.
Ne2 (15. bxa6 Qb4+ 16. Qd2 Qxb3 $17) 15... Qxb5 16. Nc3 Qb7 17. Rxa5 {[#]} Rd8
(17... Bg4 $1 $17 {[%cal Rg4d1][%mdl 512]} 18. f3 (18. Qxg4 $2 Qxb3 19. Qe2 Nb4
$19) 18... Bd7) 18. Rb5 $11 Qa7 {With the idea ...Nc7.} 19. Rd5 Rxd5 20. Nxd5
e6 $1 {[%cal Re6d5]} 21. Ne3 Rb8 (21... Qb7 $17 {...Rb8 is the strong threat.}
22. Ba1 Nc5 $1) 22. Bc3 {[#]} Nc5 $1 23. Bc2 {[#]} Qc7 $1 {Threatens to win
with ...Nxe4!} 24. Ba1 {[#]} (24. O-O $11 {keeps the balance.}) 24... Qa5+ ({
Black should try} 24... Ba6 $1 $17 25. f3 {[#]} Nd3+ $1 {[%mdl 64] Deflection}
26. Bxd3 Bxd3 27. Qxd3 Qc1+ {[%mdl 64] Double Attack} 28. Nd1 Qxa1) 25. Ke2 {
The position is equal.} Ba6+ 26. Kf3 Nxe4 27. Bxe4 {Black must now prevent g3.}
({Don't go for} 27. Kxe4 $2 Bb7+ 28. Kd3 (28. d5 $2 exd5+ 29. Kf4 Qc7+ 30. Kg4
d4 $19) 28... e5 $19) 27... Qh5+ $1 28. Kg3 $1 {Hoping for Qxh5.} Be2 29. Qc2
Qg5+ 30. Kh3 Qh5+ 31. Kg3 {And now f4 would win.} Qg5+ 32. Kh3 Qh5+ {Weighted
Error Value: White=0.18/Black=0.14} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.10"]
[White "Howell, David W L"]
[Black "Neiksans, Arturs"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2658"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "284"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,284,17,40,42,46,31,41,43,36,-80,-88,-130,-114,-110,-118,-140,-138,
-117,-110,-107,-110,-105,-106,-107,-102,-117,-75,-262,-105,-159,-164,-171,-160,
-123,-119,-176,-170,-166,-167,-164,-39,-172,-172,-174,-174,-174,-172,-195,-195,
-195,-198,-202,-202,-202,-202,-202,-202,-202,-202,-202,-68,-202,-169,-190,-180,
-202,-197,-307,-194,-193,-178,-201,-200,-195,-197,-689,-266,-283,-280,-440,
-396,-439,-484,-408,-373,-479,-427,-381,-222,-247,-215,-222,-225,-189,0,-554,
-550,-540,-500,-566,-564,-566,-539,-539,-526,-524,-504,-561,-493,-555,-525,
-495,-449,-495,-496,-490,-437,-461,-429,-451,-451,-456,-451,-498,-523,-496,
-515,-504,-485,-487,-437,-416,-409,-513,-420,-412,-306,-309,-302,-282,-279,
-309,-300,-245,-250,-301,-300,-304,-271,-280,-233,-241,-239,-245,-96,-253,-245,
-237,-182,-191,-100,-147,-202,-177,-181,-106,-88,-299,-238,-298,-246,-427,-427,
-414,-289,-391,-395,-395,-159,-163,-142,-61,0,0,0,0,30,0,0,-210,-239,-234,-239,
-220,-148,-152,0,0,0,0,0,0,0,-243,0,-97,-175,-139,-205,-161,0,-156,-39,-25,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. d4 O-O 7.
Re1 d5 8. cxd5 exd5 9. Nc3 Na6 10. Bf4 c5 11. Rc1 Ne4 12. dxc5 Naxc5 13. Be5 a6
$5 {[%mdl 4] Exploring less charted territory.} 14. a3 {[#] E17: Queen's
Indian: 4 g3 Bb7 5 Bg2 Be7.} b5 $5 $146 {[%mdl 8] New and interesting.} ({
Predecessor:} 14... Re8 15. b4 Ne6 16. Nd4 Bf6 17. Nxe6 Rxe6 18. Nxe4 Bxe5 19.
Nc3 Rd6 20. Qb3 g6 21. e3 Qd7 {1/2-1/2 (39) Zenzera,A (2440)-Rozum,I (2539)
Kaliningrad 2015}) 15. b4 Ne6 16. Qb3 {White is slightly better.} Rc8 17. Nd4 (
17. Rcd1 $14 {keeps the upper hand.} Nxc3 18. Bxc3) 17... Nd2 $1 $17 {[%cal
Rd2b3]} 18. Qa2 Nc4 19. Nxe6 fxe6 20. Bd4 e5 21. Ba7 Qd7 22. e4 {[%cal Re4d5]}
Ba8 23. Bc5 Bxc5 24. bxc5 {[%cal Rc3d5]} d4 $36 {[%mdl 2048] White is under
strong pressure.} (24... Rxc5 $6 25. Nxd5 Bxd5 26. exd5 $11) 25. Na4 Kh8 26.
Nb2 $2 (26. Nb6 $17 Nxb6 27. cxb6) 26... Rxc5 (26... d3 $1 $19 {[%cal Rd3d2]}
27. Rxc4 (27. Nxc4 $2 bxc4 28. Red1 Rxc5 $19) 27... bxc4 28. Qxc4 d2) 27. Nxc4
(27. Nd3 $142 Rcc8 28. a4) 27... Qf7 $1 {[%mdl 64] Pin} (27... bxc4 28. Rxc4
Qf7 29. Rc2 $17) 28. Bf1 Rfc8 $1 ({Resist} 28... bxc4 29. Rxc4 Bc6 30. Rc2 $17)
29. Bh3 R8c7 30. Qb1 Rxc4 $19 31. Bf1 Rxc1 32. Rxc1 g6 (32... h6 $19 33. Bd3
Bb7 34. Rxc7 Qxc7) 33. a4 {[#]} (33. Bd3 $15) 33... Bxe4 $1 {[%mdl 576]
Deflection} 34. Qxe4 (34. Rxc7 $2 Qf3 $19) 34... Rxc1 35. Qxe5+ {[%mdl 4096]
Endgame KQR-KQB} Kg8 36. axb5 axb5 37. Qxd4 Qc4 $1 {[%csl Gc1][%cal Rc4f1]} 38.
Qd8+ Kf7 {[%csl Gc1][%cal Rc4f1]} 39. Qd7+ Kf6 {[%csl Gc1][%cal Rc4f1]} 40.
Qd6+ Kf5 $1 {[%csl Gc1][%cal Rc4f1]} 41. Qd7+ Ke4 {[%csl Gc1][%cal Rc4f1]} 42.
Qe7+ Kd5 $1 {[%csl Gc1][%cal Rc4f1]} 43. Qd7+ (43. Qd8+ $1 $15 Ke6 44. Qe8+ Kd6
45. Qd8+ Kc5 46. Qe7+ Kc6 47. Qe8+ Kc7 48. Qe7+ Kb6 49. Qd6+ Qc6 50. Qd2) 43...
Kc5 $1 {[%csl Gc1][%cal Rc4f1]} 44. Qe7+ Kb6 {[%csl Gc1][%cal Rc4f1]} 45. Qe3+
Qc5 46. Qe6+ (46. Qd2 $142) 46... Qc6 47. Qe3+ Kb7 48. h4 Qc5 49. Qe4+ Kc7 50.
h5 $2 (50. Qf4+ Kc8 51. Qf7) 50... gxh5 $2 (50... Qc4 51. Qxc4+ bxc4) 51. Qxh7+
Kb6 $1 52. Qd3 (52. Qg8 $142) 52... Ka5 53. Kg2 Qc6+ 54. Kh2 Rc2 55. Kg1 {
If only White now had time for Qa3+....} Qc5 56. Be2 Rc3 (56... Ka4 $142 57.
Kg2 b4) 57. Qd2 b4 58. Qa2+ Ra3 59. Qg8 b3 $2 ({Black should try} 59... Ra1+
$19 60. Kg2 Ka4) 60. Qa8+ $2 {[%mdl 8192]} (60. Qd8+ $1 $11 Ka4 61. Qd7+ Ka5
62. Qd8+ Qb6 63. Qd5+ Kb4 64. Qc4+ Ka5 65. Qd5+ Kb4 66. Qc4+ Ka5 67. Qd5+)
60... Kb4 $1 61. Qe4+ Kc3 $1 ({Weaker is} 61... Ka5 62. Bd1 $17) 62. Kg2 Ra5
63. Qd3+ Kb2 64. Bf3 Ka2 65. Be4 Ka3 66. Qf3 Qe5 67. Bg6 Rb5 68. Bf7 Qf5 69.
Qa8+ Kb2 ({Not} 69... Kb4 70. Qf8+ Qc5 71. Qh6 $19) 70. Qa4 Qe5 71. Qc4 Qc5 72.
Qe2+ Ka3 73. Qf3 Qe5 74. Qa8+ Kb4 75. Qf3 b2 76. Ba2 Qd6 77. Bb1 Ka5 78. Qc3+
Kb6 79. Qh8 Qd5+ 80. Kh2 h4 81. Qf6+ Ka5 82. Qc3+ Ka6 83. Qf6+ Ka7 84. Qe7+ Kb8
85. Qe8+ Kc7 $1 86. Qe7+ Qd7 87. Qxh4 Qf7 88. Qd4 Qh5+ $1 89. Kg1 {intending
Qg7+.} Qd5 (89... Qc5 $1 $19 {[%cal Rc5d4]} 90. Qg7+ Kb6 91. Qh6+ Kb7) 90. Qc3+
$2 (90. Qa7+ $17 {was the only chance.} Rb7 91. Qa4) 90... Qc5 91. Qg7+ Kb6 92.
Qf6+ Ka5 (92... Qc6 $19 93. Qd8+ Ka6) 93. Qd8+ Rb6 $1 94. Qd2+ Ka6 95. Qd3+ Rb5
$1 96. Qe4 $2 (96. Qd7 $17 {was called for.}) 96... Qd5 97. Qe2 Kb6 98. Qc2 $2
(98. Qe3+ Rc5 99. Be4 Qd1+ 100. Kg2) 98... Qd4 99. Kg2 Qe5 100. Qg6+ Ka5 101.
Qc2 Rc5 (101... Qd4 $19 {is more deadly.} 102. Qe2 Re5) 102. Qd2+ $17 Ka6 $1
103. Qd3+ Kb6 (103... Rb5 $1 $15 104. f3 Qd5 105. Qa3+ Kb6 106. Qe3+ Rc5) 104.
Qd8+ $11 Qc7 105. Qd4 Qc6+ 106. Kh2 Kc7 107. Qf4+ $2 (107. Qg7+ $11 {and White
has nothing to worry.} Kc8 108. Qh8+ Kc7 109. Qg7+ Kd6 110. Qg6+ Ke7 111. Qh7+
Ke8 112. Qh8+ Kf7 113. Qh7+ Kf8 114. Qh8+ Kf7 115. Qh7+ Ke8 116. Qh8+ Kf7)
107... Qd6 $19 108. Qf7+ Kb6 $1 109. Qb3+ Rb5 110. Qe3+ Qc5 $2 (110... Kb7 $17
111. Qf3+ Kc7 112. Qc3+ Kb7 113. Qf3+ Ka6) 111. Qe6+ $11 Ka7 112. Qa2+ (112.
Qd7+ {is more complex.} Kb6 113. Qd8+ Ka7 114. Qd7+) 112... Kb8 113. Qg8+ $1
Qc8 114. Qg6 $2 (114. Qf7 $1 $11 {and White stays safe.} Qc6 115. Qf4+ Qc7 116.
Qf8+ Ka7 117. Qe8) 114... Qh8+ $2 ({Better is} 114... Qd7 $1 $19 115. Qe4 Qd5
116. Qe8+ Kc7) 115. Kg2 {[#]} (115. Kg1 $11) 115... Qe5 $1 $17 116. Qg8+ Kc7
117. Qh7+ {[#]} Kb6 $2 (117... Kc6 $1 $19 118. Qg6+ Kc5 119. Qc2+ Kd6) 118.
Qh6+ $2 (118. Qg6+ $1 $11 Ka5 119. Qc2) 118... Ka7 (118... Kc5 $17 {Hoping for
...Qd4.} 119. Qf8+ Qd6) 119. Qh7+ $1 $15 Rb7 120. Qg8 {The position is equal.}
Rc7 (120... Qd4 $5 121. Qa2+ $8 Kb8 122. Qg8+ Ka7 123. Qa2+ Kb8 124. Qg8+ Ka7
$17) 121. Qa2+ Kb6 (121... Kb8 $2 122. Qb3+ Ka7 123. Qa3+ Kb6 124. Qb3+ Kc5
125. Qa3+ Kb6 126. Qb4+ Qb5 127. Qd4+ Ka6 128. Qe3 $19) 122. Qb3+ Qb5 (122...
Ka5 {is more complex.} 123. Qa3+ Kb6 124. Qb3+) 123. Qe3+ Kb7 {White must now
prevent ...Qb4.} 124. Qf3+ Kb8 125. Qf8+ Ka7 {And now ...Qb7+ would win.} (
125... Rc8 $2 126. Qd6+ Kb7 127. Be4+ Rc6 128. Qd7+ Kb6 129. Qd8+ Kc5 130. Qg5+
Kb6 131. Qd8+ Kb7 132. Qe7+ Kb6 133. Qd8+ $19) 126. Qa3+ Kb6 {Threatens to win
with ...Rc4.} 127. Qe3+ Rc5 128. Qd4 Qc6+ 129. Kh2 Ka7 {...Ka6 is the strong
threat.} (129... Kc7 $5 130. Qg7+ $8 Kd6 131. Qg6+ Kc7 132. Qg7+ Kd8 133. Qh8+
Kd7 $11) 130. Be4 Qb5 {Strongly threatening ...Ka6.} 131. Bb1 Qb6 132. Qa4+ Kb8
{aiming for ...Kc7.} (132... Qa5 {keeps more tension.} 133. Qd7+ Qc7 134. Qa4+
Kb6 135. Qb4+ Rb5) 133. Qe8+ Rc8 134. Qe5+ Ka7 (134... Rc7 $5 135. Qe8+ $8 Ka7
136. Qa4+ Qa6 137. Qd4+ $11) 135. Qe7+ Qb7 (135... Rc7 $5 136. Qa3+ $8 Kb7 137.
Be4+ $11) 136. Qa3+ Kb8 {( -> ...Rh8+)} 137. Qd6+ (137. Qb3 {keeps more
tension.}) 137... Rc7 (137... Ka7 {with more complications.}) 138. Qf8+ (138.
Kg1 {feels hotter.}) 138... Qc8 (138... Ka7 $5 139. Qa3+ $8 $11) 139. Qb4+ Rb7
140. Qd6+ Qc7 141. Qf8+ Qc8 (141... Ka7 $5 142. Qa3+ $8 $11) 142. Qd6+ Qc7 {
Weighted Error Value: White=0.62/Black=0.26} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.11"]
[White "Aronian, Levon"]
[Black "Niemann, Hans Moke"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2782"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,83,13,18,12,15,20,19,22,24,30,15,18,12,16,20,25,4,42,36,43,45,36,33,
45,33,42,45,39,41,33,24,63,69,72,75,72,75,50,75,72,56,80,58,74,62,81,71,72,77,
79,72,74,81,80,69,225,212,343,321,305,296,431,310,400,384,610,610,610,610,610,
610,610,562]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O d6 6. c3 O-O 7.
Re1 h6 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. Nbd2 {
[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} a6 9. a4 $1 {[%mdl 4] outshines the older 9.
Bb3.} Ba7 {The position is equal.} 10. Nf1 Re8 11. Ng3 Be6 12. Bxe6 Rxe6 13. b4
{[%cal Bb2b4,Bb4b5][%mdl 32]} d5 14. Qc2 {[#]} d4 $146 ({Predecessor:} 14...
dxe4 15. dxe4 Ne7 16. Bb2 c5 17. Rad1 Qb6 18. a5 Qc6 19. Qb3 Ng6 20. Bc1 Ng4 {
1/2-1/2 (67) Duda,J (2757)-Karjakin,S (2752) Chess.com INT 2020}) 15. b5 Ne7
16. cxd4 Bxd4 17. Nxd4 Qxd4 18. Rb1 axb5 19. axb5 Qd7 20. Be3 b6 21. h3 Ra5 22.
Red1 Rd6 23. d4 Rxb5 24. Rxb5 Qxb5 25. Qxc7 {[%mdl 64] [#] Double Attack} Rd7
26. Qc3 h5 27. f3 exd4 28. Rxd4 h4 {Threatens to win with ...Rxd4.} 29. Nf1
Rxd4 30. Qxd4 Nd7 31. Bf2 Ng6 32. Ne3 Nf4 {aiming for ...Ne2+.} 33. Qd6 g5 {
Loses the game.} (33... Ne2+ $1 $14 34. Kh1 Kh7) 34. Qe7 $18 Ne2+ (34... Ne6
$142 35. Qe8+ Nef8) 35. Kh1 Ng3+ {[#]} 36. Kh2 $1 Nf8 (36... Qe5 {keeps
fighting.} 37. Qxd7 Nxe4+ 38. Kg1 Nxf2 39. Kxf2 b5) 37. Nf5 {[%mdl 64] Decoy}
Nxf5 38. Qxg5+ {[%mdl 64] Double Attack, Pin} ({And not} 38. exf5 Qxf5 39. Bxb6
Qf4+ 40. Kh1 Qc1+ 41. Bg1 Ne6 $11) 38... Ng6 (38... Kh8 $142 39. exf5 Qe5+ 40.
f4 Qe4 41. Qxh4+ Kg8 42. Qg5+ Kh8 43. Bxb6 Nh7 44. Qd8+ Kg7 45. Qd4+ Qxd4 46.
Bxd4+ Kh6) 39. exf5 {[%mdl 64] Pin. White is clearly winning.} Qe5+ 40. Kh1 Qf4
41. Qg4 Qxg4 42. fxg4 {Weighted Error Value: White=0.07/Black=0.27} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.12"]
[White "Vachier-Lagrave, Maxime"]
[Black "Tabatabaei, M. Amin"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2763"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,65,39,15,11,14,20,15,11,-10,-15,-15,-7,-16,0,-12,0,-41,89,80,114,131,
176,167,153,153,388,349,361,343,454,445,443,435,636,629,599,582,689,675,647,
638,595,454,722,704,562,559,1683,1512,4156,2341]} 1. e4 e5 2. Nf3 Nc6 3. Bb5
Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 Be7 {
9...Bd7 is a critical line. C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 10.
Nc3 Nh4 11. Nxh4 Bxh4 {The position is equal.} 12. f4 $5 {[%mdl 4] Exploring
less charted territory.} Bf5 13. Rd1+ Ke8 14. g4 {[#]} Bc8 $146 ({Avoid the
trap} 14... Bxc2 $2 15. Rd2 $18) ({Predecessor:} 14... Bd7 15. Ne4 b6 16. f5 c5
17. Bg5 Bxg5 18. Nxg5 Bc6 {1-0 (63) Shevchenko,K (2592)-Lysyj,I (2594) Chess.
com INT 2020}) 15. Kg2 h5 16. f5 Be7 (16... g6 $15 {keeps the upper hand.}) 17.
Kg3 $1 $16 hxg4 18. hxg4 Bh4+ 19. Kf3 Be7 20. Bf4 g6 $2 {Loses the game.} (
20... b6 $16 21. Rh1 Rg8) 21. Rh1 $18 Rg8 {[#]} 22. f6 {[%cal Rf6e7]} Bb4 {[#]}
23. Ne4 {White is clearly winning.} Be6 24. a3 Ba5 (24... Bf8 $142 25. Rh7 Rd8)
25. Ng5 Bd5+ 26. Kg3 Bxh1 27. Rxh1 Rf8 28. Rh7 Bb6 29. c3 Rd8 (29... Bc5 $142
30. b4 Be7 31. fxe7 Kxe7) 30. e6 Rd3+ 31. Kg2 Be3 {[#]} 32. e7 $1 Rg8 (32...
Bc5 33. exf8=N) 33. Nxf7 {Weighted Error Value: White=0.11/Black=0.53} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.13"]
[White "Kovalev, Vladislav"]
[Black "Vitiugov, Nikita"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2634"]
[BlackElo "2727"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,15,26,25,19,13,21,10,26,22,6,5,16,10,8,12,8,15,3,11,18,12,6,12,11,
17,6,8,9,23,14,10,0,17,10,0,5,0,18,10,27,12,35,37,35,29,23,27,29,17,15,0,24,28]
} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bd3 Ngf6 6. Re1 {B51: Sicilian:
Moscow Variation (3 Bb5+) without 3...Bd7.} e6 7. c3 b5 8. Bc2 {The position
is equal.} c4 9. a4 Bb7 10. d4 {The main line 10.d4 scores better than 10.axb5.
} cxd3 11. Qxd3 Nc5 12. Qe2 bxa4 13. e5 dxe5 14. Nxe5 Bd6 15. Nd2 {[%cal Bb1d2,
Bd2c4,Bc4a3][%mdl 32]} Bxe5 16. Qxe5 Nd3 17. Bxd3 Qxd3 18. Rxa4 O-O {[#]} 19.
Rd4 $146 ({Predecessor:} 19. Nb3 Bd5 20. Na5 Rfc8 21. Rd4 Qg6 22. Qg3 Rc5 23.
Qxg6 hxg6 24. Ra4 Rb8 25. c4 {1-0 (41) Amin,B (2709)-Van Wely,L (2622) Germany
2018}) 19... Qb5 20. Nc4 Rfd8 21. Red1 Rd5 22. Rxd5 Bxd5 23. Na3 Qb7 (23... Qc6
{is more complex.} 24. f3 Ne8 25. Qe2 Rc8 26. Bf4 f6) 24. f3 Nd7 25. Qd4 Nf8
26. c4 Bc6 27. Be3 Ng6 28. Qb6 Qc8 29. Rd2 h6 30. b4 Be8 31. Qc5 {Weighted
Error Value: White=0.03/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.14"]
[White "Esipenko, Andrey"]
[Black "Moussard, Jules"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2720"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,70,0,0,15,0,0,-21,0,0,0,0,0,0,0,-20,0,-30,-35,-79,-79,-84,-55,-97,
-70,-81,-70,-160,6,-29,-20,-24,-25,-170,-169,-341,-50,-56,-47,-370,-373,-1132,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5.
Nxe5 Nd7 6. Nc3 Nxc3 7. bxc3 Nxe5 8. dxe5 Bc5 {C43: Petroff Defence: 3 d4.} 9.
O-O $1 {9.0-0 scores better than 9.Qh5.} O-O 10. Kh1 {[#]} (10. Qh5 {keeps
more tension.} g6 11. Qh6 Re8 12. Bg5 Be7 13. Bxe7 Qxe7 14. f4) 10... Qe7 $146
({Predecessor:} 10... c6 11. Qh5 g6 12. Qh6 Be7 13. f4 f5 14. c4 Be6 15. cxd5
Qxd5 16. Be3 c5 {0-1 (35) Konguvel,P (2374)-Swapnil,S (2501) Udaipur 2019}) 11.
f4 f6 12. exf6 Qxf6 13. f5 Bd7 14. Qh5 h6 15. Bd2 Rae8 16. Rf3 Bd6 17. g4 Qf7
18. Qh3 d4 {...dxc3 is the strong threat.} 19. cxd4 Qd5 20. g5 (20. c3 $15)
20... g6 $2 (20... hxg5 $1 $17 {Hoping for ...Bc6.} 21. Bxg5 Qxd4) 21. Qg2 Rxf5
22. Bxf5 Bxf5 23. Raf1 ({Wrong is} 23. gxh6 $2 Be4 $19) (23. c4 $11 {and White
is okay.} Qxd4 24. Rxf5 gxf5 25. gxh6+ Kh8 26. Rf1) 23... Be4 $1 $19 {[%mdl 64]
And now ...Rf8 would win. Skewer} 24. gxh6 $2 (24. Kg1 {was the only defense.})
24... Kh7 $2 (24... Rf8 $1 $19 {[%cal Rf8f3]} 25. Kg1 Rf7 $1 {[%mdl 64] Pin})
25. Rf7+ $15 Kh8 26. R7f3 $2 {[%mdl 8192] [#]} Rf8 $1 $19 {[%cal Rf8f3][%mdl
576] Pin} 27. c4 $2 (27. Rxf8+ Bxf8 28. Rxf8+ Kh7 29. Rf2 (29. Rf7+ $2 Qxf7 30.
Kg1 Bxg2 $19)) 27... Bxf3 $2 ({Better is} 27... Rxf3 $19 28. Rxf3 Qh5 {[%mdl
64] Pin}) 28. cxd5 $11 {The position is equal.} Bxg2+ {[%mdl 64] Discovered
Attack} 29. Kxg2 Rxf1 30. Kxf1 Bxh2 $19 {KB-KB} 31. Ke2 b5 32. Kd3 Kh7 33. Kc2
Bd6 34. Kb3 a6 35. a4 Bf8 {Weighted Error Value: White=0.68/Black=0.35} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.15"]
[White "Dreev, Aleksey"]
[Black "Harikrishna, Pentala"]
[Result "1-0"]
[ECO "D92"]
[WhiteElo "2635"]
[BlackElo "2719"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,79,0,-2,2,47,27,27,33,59,43,37,10,21,4,50,45,49,57,42,29,28,32,16,2,
56,41,111,51,63,37,150,146,145,150,141,147,186,180,225,221,257,253,422,419,588,
386,393,354,447,438,439,441,1028,1022,29986,29980,29984,29985,29987,29988,
29981,29969,29965,29965,7202,5306,2381,2110]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4.
Nf3 Bg7 5. Bf4 O-O 6. Rc1 dxc4 7. e3 Be6 8. Ng5 {D92: Grünfeld: 4 Nf3 Bg7 5
Bf4.} Bg4 (8... Bd5 $5) 9. f3 Bc8 10. Bxc4 {[#] White has an edge.} Nc6 $146 ({
Predecessor:} 10... c6 11. O-O h6 12. Nge4 Nd5 13. Bxd5 cxd5 14. Nf2 Nc6 15.
Qb3 g5 16. Bg3 h5 {1/2-1/2 (29) Landa,K (2640)-Kasimdzhanov,R (2699) Germany
2013}) 11. Bg3 e6 12. f4 Na5 13. Be2 c5 14. dxc5 Nd5 15. Nxd5 exd5 16. b4 Nc4
17. Bxc4 dxc4 18. O-O Bd7 (18... Qxd1 $11 19. Rfxd1 Bg4) 19. Ne4 $14 (19. Rxc4
Bb5 $15) 19... a5 {[#]} ({Black should play} 19... b5 $1 $14) 20. Bh4 $1 {
[%mdl 512]} Qc7 21. Bf6 {Strongly threatening Qd4.} (21. Rxc4 Bb5 $15) 21...
Bc6 {White now steadily converts the win.} (21... Rfe8 $1 $14 22. Bxg7 Rxe4)
22. Bxg7 $16 Kxg7 {[#]} 23. Qd4+ $1 (23. Rxc4 $6 axb4 24. Rxb4 Bxe4 $16) 23...
f6 24. b5 ({But not} 24. Rxc4 $6 Bb5 $14) (24. Qxc4 $6 Qe7 $11) 24... Bxb5 25.
Nd6 $36 {[%mdl 2048] White has strong initiative.} Ba6 26. Rb1 ({And not} 26.
Nxc4 Rad8 $17) 26... Rfd8 27. f5 {Threatens to win with fxg6.} g5 (27... Qe7 {
keeps fighting.} 28. fxg6 hxg6) 28. h4 $18 h6 (28... g4 $142 29. h5 Qe7) 29.
Rb6 Qe7 30. Rf3 Rd7 31. hxg5 hxg5 32. Rg3 {aiming for Rxg5+.} Kh7 (32... Qe5
$142 33. Qxe5 fxe5) 33. Qg4 Kg7 34. Ne4 Rad8 35. Nxg5 Rd1+ 36. Kh2 fxg5 37. f6+
Qxf6 38. Rxf6 Rh8+ 39. Rh3 Rxh3+ 40. Qxh3 {Weighted Error Value: White=0.13/
Black=0.57} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.16"]
[White "Dubov, Daniil"]
[Black "Erigaisi Arjun"]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "2714"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,74,-2,0,-14,13,-9,0,-3,10,-9,0,0,0,0,4,-33,-31,-37,-15,-17,-11,-8,-4,
-27,-13,-29,-37,-36,0,0,0,0,43,52,63,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. e3 Nf6 5. Nf3 O-O 6. Bd2 b6 7.
cxd5 exd5 8. Bd3 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5.} c5 9. h3 {
[#]} Ba6 $146 ({Predecessor:} 9... Nc6 10. a3 Ba5 11. O-O Bb7 12. Rc1 Bxc3 13.
Bxc3 c4 14. Bc2 b5 15. Ne5 a5 {1-0 (32) Bluebaum,M (2646)-Firman Syah,F Chess.
com INT 2020}) 10. Bxa6 Nxa6 11. O-O Ne4 12. Rc1 Bxc3 13. Bxc3 c4 14. Be1 b5
15. Nd2 Re8 16. Nxe4 Rxe4 17. b3 Nb8 18. Qh5 Nc6 19. Bd2 g6 20. Qf3 h5 21. Rb1
Rb8 22. Rb2 Qc7 23. Rfb1 Rb6 24. bxc4 ({White should try} 24. a4 $1 $14) 24...
bxc4 $11 {The position is equal.} 25. Rxb6 axb6 26. Rb5 Qd8 27. a4 Na7 28. Rb4
Nc6 29. Rb5 Na7 30. Rb4 Qc7 31. Bc3 Qc6 32. Qd1 Re6 33. Qb1 Nc8 34. Rb5 Na7 35.
Rb4 Nc8 36. Rb5 Na7 37. Rb4 Nc8 {Weighted Error Value: White=0.06/Black=0.06}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.17"]
[White "Fedoseev, Vladimir"]
[Black "Yilmaz, Mustafa"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2704"]
[BlackElo "2626"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,109,24,-18,0,0,0,0,0,0,1,0,4,0,12,-13,0,0,43,50,68,39,46,54,49,38,71,
75,110,92,93,84,105,56,78,89,133,134,152,62,93,75,87,48,63,70,95,95,104,102,
112,94,136,116,153,125,124,107,151,143,187,193,254,245,250,221,220,172,200,178,
171,160,182,171,172,190,190,168,166,147,155,139,148,134,160,112,214,147,153,
147,156,165,478,500,427,383,427,427,917,835,954,930]} 1. e4 c5 2. Nf3 d6 3. d4
cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Rg1 Nc6 {B90: Sicilian Najdorf: Unusual White
6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 7. g4 h6 8. h3 {[#]} Nxd4 $146 {The
position is equal.} ({Predecessor:} 8... e6 9. Be3 Be7 10. Qe2 Qc7 11. O-O-O
Bd7 12. f4 Nxd4 13. Rxd4 e5 14. Rc4 Qa5 {1-0 (24) Paravyan,D (2653)-Rodchenkov,
S (2346) Chess.com INT 2020}) 9. Qxd4 e5 10. Qd3 Be6 11. Bd2 Qb6 12. Qg3 Qc6
13. Bd3 g5 14. h4 Rg8 15. hxg5 hxg5 16. f3 Be7 17. Rh1 Nd7 18. O-O-O Bd8 19.
Kb1 Ba5 20. Qe1 Rc8 21. Ne2 Bxd2 22. Qxd2 Qb6 23. Ng3 Nf6 24. Nf1 ({White
should try} 24. c3 $16) 24... Ke7 25. Rh6 Qc5 26. c4 (26. Ng3 {with more
complications.} Rcd8 27. a3 b5 28. Be2 d5 29. Qe1) 26... Qb6 27. Rc1 {[%cal
Bd1c1,Bc1c3,Bc3d3][%mdl 32]} Qd4 28. Ne3 Qc5 29. Rhh1 Qb6 30. Rhd1 Qd4 31. Rc3
Rc6 32. Qc1 Qb6 33. Bc2 Rcc8 34. Qd2 Rgd8 35. Rd3 Qc7 (35... Qc5 $142 36. Bb3
Rc6 37. Nd5+ {[%mdl 64] Discovered Attack} Bxd5) 36. Bb3 $18 Rd7 {[#]} 37. Ba4
$1 {[%cal Ra4d7]} Rdd8 38. Ka1 Qb6 39. b4 Qc7 40. Bb3 Rd7 41. Nf5+ Bxf5 42.
exf5 Rg8 43. Ba4 Rdd8 44. Qe3 {[#] Rxd6! is the strong threat.} Kf8 45. Bb3 $36
{[%mdl 2048] White is on the roll.} Rd7 46. Kb2 b6 47. R3d2 Rg7 (47... a5 $16 {
might work better.}) 48. Rc2 Rg8 49. Rh1 Rd8 50. Rh6 Ke7 (50... Qe7 {is a
better chance.} 51. Qxb6 e4) 51. c5 bxc5 52. bxc5 Rd7 53. Re2 {White is
clearly winning.} Qd8 (53... Qa5 $142 54. Kb1 Qb5) 54. cxd6+ Rxd6 55. Qa7+ {
Weighted Error Value: White=0.11/Black=0.24} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.18"]
[White "Zhou, Jianchao"]
[Black "Yu, Yangyi"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2629"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,120,11,18,17,21,14,8,16,6,35,19,33,42,53,47,39,35,35,28,35,36,43,41,
50,27,31,0,0,0,0,2,1,-1,0,0,0,0,0,0,0,0,0,0,0,-26,-26,-26,-18,-52,-41,-50,-19,
-31,-20,-41,-34,-21,-27,-36,-40,-68,-68,-62,-73,-113,-117,-119,-126,-129,-123,
-123,-114,-115,-125,-117,-127,-115,-95,-230,-235,-227,-235,-349,-349,-345,-316,
-356,-422,-583,-589,-591,-591,-593,-531,-394,0,-587,-560,-529,-426,-1151,-1070,
-29970,-29971,-29972,-29973,-29976,-29977,-29976,-29977]} 1. d4 Nf6 2. c4 e6 3.
Nf3 d5 4. Nc3 Bb4 5. Qa4+ Nc6 6. e3 O-O 7. Bd2 Re8 {D38: Queen's Gambit
Declined: Ragozin Defence (4 Nf3 Bb4).} 8. a3 Bf8 9. Be2 {[#]} h6 $5 $146 {
[%mdl 8] The position is equal. New and interesting.} ({Predecessor:} 9... a6
10. O-O Rb8 11. Rac1 dxc4 12. Qxc4 e5 13. d5 Ne7 14. e4 Ng6 15. Rfd1 Bd6 {
0-1 (59) Lushenkov,M (2703)-Pichot,A (2904) Chess.com INT 2019}) 10. O-O a6 11.
Rfd1 dxc4 12. Qxc4 e5 13. Nxe5 Nxe5 14. dxe5 Rxe5 15. e4 Be6 16. Qa4 {Bf4 is
the strong threat.} Qe8 17. Qc2 Rc5 18. Be3 Rc6 $1 19. Bf3 Bg4 $1 20. Qe2 Bxf3
21. Qxf3 Qe6 22. Bd4 Re8 {[%cal Rf6e4]} 23. Bxf6 Qxf6 24. Qxf6 Rxf6 25. f3 Rb6
26. b4 Rc6 27. Nd5 Rc2 28. Rac1 Rxc1 29. Rxc1 $11 {[%mdl 4096] Endgame KRB-KRN}
c6 30. Nb6 Rd8 $1 31. Rc3 g5 {Threatens to win with ...Bg7.} 32. Kf1 Bg7 33.
Rc2 Rd1+ 34. Ke2 Rg1 35. g4 Rh1 36. Kd3 Ra1 37. Nc4 b5 38. Na5 Rxa3+ 39. Ke2 c5
$1 {[%cal Rc5b4]} 40. Rxc5 {[#]} Bf8 $1 {[%cal Rf8c5]} 41. Rd5 Bxb4 42. Nc6
Ra2+ 43. Ke3 Ba3 44. Nd4 Rxh2 45. e5 {[#]} (45. Rd8+ $17 {keeps fighting.} Kg7
46. Nf5+ Kf6 47. Rc8) 45... Bb2 $1 $19 46. Rd8+ Kh7 47. Ra8 (47. Rb8 {might
work better.}) 47... Bxd4+ 48. Kxd4 {KR-KR} Ra2 49. e6 fxe6 50. Ke5 Kg6 51.
Kxe6 {intending Rg8+.} Ra3 52. Ke5 Re3+ 53. Kd5 Ra3 (53... Rxf3 $19 {Strongly
threatening ...Rf6.} 54. Rxa6+ Rf6) 54. Ke4 $2 {[%mdl 8192]} (54. Ke5 $1 $11 {
and White stays safe.} b4 55. Ke4) 54... b4 {[%cal Bb5b4,Bb4b3,Bb3b2][%mdl 32]}
55. Rb8 b3 56. Rb6+ (56. Kd4 $142 a5 57. Rb6+ Kg7 58. Rb7+ Kg6 59. Rb6+ Kf7 60.
Kc3) 56... Kf7 57. Rxh6 Ra4+ {Black mates.} 58. Kd3 Rb4 59. Rh1 b2 60. Rb1 Kf6
{Weighted Error Value: White=0.42/Black=0.14} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.19"]
[White "Keymer, Vincent"]
[Black "Xiong, Jeffery"]
[Result "1-0"]
[ECO "D71"]
[WhiteElo "2630"]
[BlackElo "2700"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,127,31,29,48,39,31,8,24,16,32,10,25,16,17,23,37,0,0,0,70,42,70,62,
444,118,106,91,73,71,63,96,72,68,66,65,120,112,111,110,156,84,75,0,0,0,0,0,111,
109,135,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,505,478,562,562,562,562,562,562,562,562,
562,562,549,538,476,302,285,0,401,401,401,401,4710,4710,29982,29983,29983,
29984,29984,29978,29985,29974,29973,29974,29978,29979,29979,29980,29980,29981,
29981,29982,29982,29983,29982,29983,29982,29979,29979,29980,29979,29978]} 1. d4
Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c6 7. e4 Be6 {E62: King's
Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6.} 8. Qe2
{[#]} Bg4 $146 ({Predecessor:} 8... Qc8 9. h3 d5 10. cxd5 cxd5 11. e5 Ne8 12.
Ng5 Nc7 13. Nxe6 Nxe6 14. Be3 Nc6 15. Nxd5 Nexd4 16. Nxe7+ Nxe7 17. Bxd4 {
1-0 (52) Heppert,L (1923)-Oram,T (1601) Nuremberg 2018}) 9. h3 Bxf3 {The
position is equal.} 10. Bxf3 Nfd7 11. Be3 c5 12. d5 Ne5 13. Bg2 Qb6 $1 {
[%cal Rb6b2]} 14. Rd1 Qb4 $1 15. Bf1 $1 b5 ({Better is} 15... Ned7 $11) 16.
cxb5 $14 c4 17. Qc2 Nf3+ (17... Rc8 $14) 18. Ke2 $16 Ne5 19. a3 Qa5 20. f4 Nd3
21. Kf3 Nxb2 {[%mdl 64] [#] Remove Defender} 22. Qxb2 {Bd4 is the strong
threat.} Bxc3 23. Qa2 Nd7 (23... Qxb5 $14 24. Rb1 (24. Qxc4 Qa5 $16) 24... Qa5)
24. Bxc4 Rfc8 25. Rc1 $36 {[%mdl 2048] White is in control.} Rc7 26. Be2 (26.
Rc2 $142) 26... Qa4 27. Rb1 (27. Bd3 $16) 27... Nc5 $1 $11 28. Bc4 Rac8 (28...
Nxe4 $2 29. Bb3 $16) 29. Rhc1 f5 30. exf5 $16 ({Inferior is} 30. Rxc3 Nxe4 31.
Rc2 Rxc4 $17) 30... gxf5 {[#]} 31. Bxc5 ({But not} 31. Rxc3 $6 Ne4 $11) ({
White should play} 31. g4 $1 $16) 31... Rxc5 $11 32. Bd3 Qd4 $1 {[%cal Rd4d3]}
33. Bxf5 {Strongly threatening Rd1.} Bd2 34. Rd1 Rc3+ 35. Kg2 Rxg3+ $1 36. Kh1
Qxf4 37. Be6+ $1 Kh8 $1 {( -> ...Qf3+)} 38. Qxd2 Qe4+ {[%mdl 8192]} (38... Qf3+
$1 $11 39. Kh2 Rc3 40. Qd4+ Rg7) 39. Kh2 $18 Rc2 40. Qxc2 Qxc2+ 41. Kxg3 Qc3+
42. Kg2 Qc2+ 43. Kf3 Qc3+ 44. Kf2 Qc5+ 45. Ke2 Qc2+ 46. Kf1 Qc3 47. Ke2 (47.
Bg4 $142) 47... Qc2+ $1 48. Ke3 Qc5+ 49. Kd2 Qxa3 (49... Qd4+ $142 50. Kc2 Qc4+
51. Kb2 Qxb5+ 52. Ka1 Qc5) 50. Rg1 {[%csl Ge6][%cal Rg1g8]} Qa2+ 51. Ke3 {
[%csl Ge6][%cal Rg1g8] White mates.} Qa3+ 52. Kf4 {[%csl Ge6][%cal Rg1g8]} Qa4+
53. Kf3 {[%csl Ge6][%cal Rg1g8]} Qa3+ 54. Kg2 Kg7 55. Rbf1 Qe3 56. Kh2+ Kh6 57.
Rf5 Qd3 58. Rg2 Qb1 59. Bd7 Qe4 60. Rgf2 Qe3 61. Be8 Qe4 62. Rh5+ Kg7 63. Rf7+
Kh8 64. Rfxh7+ {Weighted Error Value: White=0.19/Black=0.29} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.20"]
[White "Kravtsiv, Martyn"]
[Black "Svidler, Peter"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2625"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,64,0,22,0,17,0,14,0,3,0,0,0,0,0,6,0,0,0,0,0,0,-9,-12,-29,-28,-37,-27,
-30,-19,-28,-10,-10,-10,-10,-9,-10,-8,-10,-10,-9,-10,-5,-3,-4,-5,0,0,0,-2,-5,
-5]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 Ngf6 5. Nc3 cxd4 6. Qxd4 e5 7. Qd3 h6
8. O-O Be7 (8... a6 $5 {[%cal Ra6b5]} 9. Bc4 Nc5 $11) 9. Be3 {B51: Sicilian:
Moscow Variation (3 Bb5+) without 3...Bd7.} a6 10. Bc4 b5 11. Bd5 Rb8 12. Ba7
Nxd5 13. Nxd5 ({Reject} 13. exd5 Rb7 $15) 13... Rb7 14. Be3 Nf6 15. Nxf6+ Bxf6
16. Nd2 {[#]} O-O $146 ({Predecessor:} 16... Be6 17. Rfd1 O-O 18. Nb1 d5 19.
exd5 e4 20. Qb3 Bg4 21. Rd2 Be5 22. Bd4 Bf4 {0-1 (44) Okrugin,S (2373)
-Amonatov,F (2453) Voronezh 2002}) 17. c4 Be6 18. Rfd1 Qb8 19. Rac1 Rc8 20. b3
Be7 21. Rc2 Rc6 22. Rdc1 Rbc7 (22... Qe8 {looks sharper.} 23. f4 exf4 24. Bxf4
Qd8 25. Qg3 Bh4) 23. cxb5 {The position is equal.} Rxc2 24. Rxc2 Rxc2 25. Qxc2
Qxb5 26. Qc7 Qd7 27. Qxd7 Bxd7 $11 {KBB-KBN} 28. Nc4 Bc6 29. f3 f6 30. Nb6 h5
31. Nd5 Bd8 32. Bb6 Bxd5 {Weighted Error Value: White=0.04/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.21"]
[White "Eljanov, Pavel"]
[Black "Ponomariov, Ruslan"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2691"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,76,0,10,-10,5,8,0,-9,-12,-18,-21,-59,-64,-77,-71,-91,-89,-83,-89,-87,
-84,-79,-88,-90,-77,-83,-72,-79,-72,-73,-61,-96,-89,-106,-88,-86,-85,-114,-60,
-73,-76,-115,-93,-131,-141,-168,-145,-171,-159,-219,-145,-149,-106,-114,-122,
-210,-221,-361,-356,-339,-329,-710,-719,-669,-661,-681,-638]} 1. Nf3 d5 2. g3
g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. e4 O-O 7. b4 {A07: Réti Opening: New York
and Capablanca Systems.} Nbc6 8. c3 a6 9. Nbd2 {The position is equal.} d4 10.
cxd4 Nxd4 {[#]} 11. Nxd4 $146 ({Predecessor:} 11. Bb2 Nec6 12. Nxd4 Nxd4 13.
Nb3 Nc6 14. a3 Qd6 15. Qc2 Rd8 16. Rfd1 Bg4 17. f3 {0-1 (42) Medancic,R (2225)
-Plenca,J (2463) Palic 2017}) 11... Qxd4 12. Qc2 Nc6 ({And not} 12... Qxa1 13.
Nb3 $16) 13. Nb3 Qxb4 14. Be3 Rd8 15. Rab1 Qd6 16. Rfc1 a5 17. Bf1 h5 18. h4
Qe7 19. Nd2 Kh7 20. Nf3 f6 21. Qb2 Bh6 22. a3 Bxe3 23. fxe3 a4 24. Rc3 Ra7 (
24... Kg7 $17 25. Qc2 Ra7) 25. Rbc1 Bg4 26. Qf2 Rd7 27. Nd2 Kg7 28. Kh2 Ra8 29.
Rb1 Na5 30. d4 (30. Rb4 $17 {was necessary.}) 30... c6 31. Rb4 b5 32. d5 Rad8 (
{Of course not} 32... cxd5 $6 33. exd5 Rb8 34. e4 $11) 33. Nf3 (33. Nb1 $17 {
was worth a try.}) 33... Rd6 $19 34. Kg2 (34. Nd2 {is a better defense.}) 34...
cxd5 35. exd5 Rxd5 36. e4 $2 {[#]} (36. Bxb5 Rc5 37. Rxc5 Qxc5 38. Nh2) 36...
Bxf3+ {Black is clearly winning.} 37. Kxf3 Rd4 38. Rxb5 Nb3 {Weighted Error
Value: White=0.32/Black=0.09} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.22"]
[White "Movsesian, Sergei"]
[Black "Navara, David"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2627"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "166"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,166,0,0,0,0,0,0,0,0,8,0,33,28,29,25,20,24,13,0,0,0,0,0,0,0,0,0,0,-22,
-22,-63,-33,-76,-58,-78,-92,-68,-68,-68,-68,-68,-56,-64,-64,-63,-27,-29,-37,
-66,-61,-43,-31,-39,-38,-37,-41,-35,0,0,0,-37,-34,-75,-75,-75,-75,-75,-75,-75,
-75,-75,-56,-75,-75,-75,-69,-75,-66,-59,-59,-60,-59,-59,-59,-92,-92,-92,-92,
-92,-92,-92,-92,-92,-92,-92,0,-92,-92,-92,-92,-92,-86,-92,0,-92,-92,-92,-92,
-92,-92,-92,-92,-92,-92,-92,-68,-92,-92,-92,0,-93,-68,-92,-68,-93,-93,-107,-18,
-18,-18,-18,-18,-137,-137,-137,-137,-137,-137,-137,-67,-67,-67,-67,-67,-67,-67,
-67,-18,-32,-47,-77,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6
6. a4 e5 7. Nf3 Be7 $1 {The main line 7...Be7 scores better than 7...Qc7.} 8.
Bg5 Be6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3
e5.} 9. Bxf6 Bxf6 10. Nd5 Nd7 11. Bc4 Rc8 12. b3 (12. Qe2 {keeps more tension.}
O-O 13. O-O Nb6 14. Nxb6 Qxb6 15. Bxe6 fxe6 16. c3) 12... Nb6 13. Nxf6+ Qxf6
14. Bxe6 Qxe6 15. O-O O-O {[#]} 16. Qd3 $146 ({Predecessor:} 16. Re1 Rc6 17. a5
Nd7 18. Nd2 f5 19. exf5 Qxf5 20. Ne4 Nc5 21. Nxd6 Qxf2+ 22. Kh1 {1/2-1/2 (40)
Ponkratov,P (2632)-Kokarev,D (2606) Khanty-Mansiysk 2019}) 16... Nd7 {[%cal
Bb6d7,Bd7c5,Bc5e4][%mdl 32]} 17. Rad1 Nc5 18. Qxd6 Qxd6 ({Much worse is} 18...
Nxe4 19. Qxe6 fxe6 20. Rfe1 $14) 19. Rxd6 Nxe4 20. Rb6 f6 21. c4 Rfd8 22. h3
Rd7 23. a5 Rc6 (23... Kf7 {with more complications.} 24. Re1 Nc5 25. Rb1 e4 26.
Ne1 f5) 24. Re1 {Strongly threatening Rxc6.} Rxb6 25. axb6 $17 {[%mdl 4096]
Endgame KRN-KRN} Nc5 26. b4 Ne6 27. Rc1 Kf7 28. Kf1 Rd3 29. c5 Nd8 (29... Ke7 {
seems wilder.} 30. Ke1 Kd7 31. c6+ Kc8 32. Nd2 Rd4) 30. Ne1 $1 Rb3 31. Rd1 Ke8
32. Nc2 Rb2 33. Ne3 Rxb4 {And now ...Ne6 would win.} 34. Nf5 g6 35. Nd6+ Ke7
36. Nc8+ Ke8 37. Nd6+ Kf8 38. Nxb7 Nxb7 $15 {KRN-KR} 39. c6 {[#]} Ke8 $1 40.
cxb7 Rxb6 $17 {KR-KR} 41. Rd6 Rb1+ 42. Ke2 Rxb7 (42... Ke7 {is more complex.}
43. Rxa6 Rxb7 44. h4 h5 45. Ke3 Rb3+) 43. Rxa6 Kf7 44. h4 Kg7 45. g3 f5 46. Kf1
e4 47. Kg2 Rb2 48. Ra7+ Kh6 49. Ra3 Kh5 50. Rc3 Kg4 51. Rc4 Re2 52. Rc5 Rd2 53.
Rc4 Ra2 54. Rb4 Rd2 55. Rc4 $1 h6 56. Ra4 Re2 57. Ra6 Kh5 58. Ra5 Kg4 {Hoping
for ...f4.} 59. Ra6 {[#]} g5 $1 60. hxg5 hxg5 {...e3 is the strong threat.} 61.
Ra4 Rd2 62. Rb4 Kh5 63. Kf1 Rd6 64. Kg2 Re6 65. Kf1 Re8 66. Ra4 Re6 67. Rb4 $1
Kg6 68. Ra4 Re5 69. Ra6+ Kh5 70. Ra4 e3 (70... Rb5 $17 71. Ra3 Kg4) 71. fxe3
$11 Rxe3 72. g4+ fxg4 73. Kg2 (73. Ra7 $11) 73... Kh4 $17 74. Ra2 Rd3 75. Rb2
Rd4 76. Ra2 g3 (76... Rc4 $17 77. Kg1 g3) 77. Ra8 $1 $15 Kg4 78. Rb8 $1 Rd2+
79. Kg1 Re2 80. Ra8 g2 81. Ra3 Kf4 82. Rb3 Re3 ({Better is} 82... Rd2 $17) 83.
Rxe3 $11 Kxe3 {Weighted Error Value: White=0.05/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.23"]
[White "Van Foreest, Jorden"]
[Black "Hovhannisyan, Robert"]
[Result "0-1"]
[ECO "D43"]
[WhiteElo "2691"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,78,0,0,0,8,0,0,0,6,0,0,0,0,0,0,0,0,0,22,-12,0,0,0,0,13,15,30,0,72,71,
70,66,147,124,120,124,193,114,108,-231,-209,-359,-340,-336,-337,-307,-314,-435,
-409,-396,-396,-731,-731,-811,-714,-1067,-1015,-988,-953,-886,-827]} 1. d4 d5
2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. g3 dxc4 6. Bg2 Nbd7 7. O-O Be7 8. e4 O-O 9. a4
e5 10. dxe5 Ng4 11. Bf4 {White wants to play h3. E07: Closed Catalan: Main
Line (5 Nf3 0-0 6 0-0 Nbd7).} Qa5 {[%cal Rg4e5]} 12. e6 fxe6 13. Qe2 {The
position is equal.} Nde5 14. Nxe5 Nxe5 15. Bxe5 Qxe5 16. Kh1 Bd7 $5 {[%mdl 4]
Exploring less charted territory.} 17. f4 Qc5 18. e5 Rad8 {[#]} 19. Rad1 $146 (
{Predecessor:} 19. Ne4 Qb4 20. Rfc1 Be8 21. Rxc4 Qb3 22. Rc3 Qb4 23. Rc4 Qb3
24. Rc3 Qb4 25. a5 {1/2-1/2 (40) Banusz,T (2582)-Dreev,A (2643) Jerusalem 2015}
) 19... Bc8 20. Rxd8 Rxd8 21. Be4 Bf8 22. h4 b5 23. Bb1 (23. Qh5 $5 {[%cal
Re4h7]} g6 24. Bxg6 hxg6 25. Qxg6+ Bg7 26. h5 $14) 23... Bb7 ({Reject} 23... g6
$6 24. h5 $16) (23... Qe7 $11) 24. Kh2 $16 {[%mdl 1024] White has strong
compensation.} Qe7 25. Ne4 $1 Rd4 ({Black should play} 25... a6 $14) 26. Ng5 $1
g6 27. h5 $1 Qd7 (27... c5 $16) 28. Nf3 (28. Rf2 $18) 28... c5 29. Nxd4 {
[%mdl 8192] Now White is beyond hope.} (29. hxg6 $16 {stays on course.} hxg6
30. Bxg6) 29... cxd4 $19 30. Be4 (30. Qg4 {was worth a try.} bxa4 31. hxg6)
30... d3 31. Qf3 Bxe4 32. Qxe4 Qd5 $1 {[%cal Rd5e4]} ({Don't blunder} 32...
gxh5 $2 33. f5 $18) 33. Qxd5 exd5 34. axb5 {[%mdl 4096] Endgame [#] KR-KB} Ba3
$1 {[%mdl 512]} 35. Kg2 $2 ({Much worse is} 35. bxa3 c3 $19) (35. hxg6 Bxb2 36.
gxh7+ Kxh7 37. e6) (35. hxg6 Bxb2) 35... Bxb2 {Black is clearly winning.} 36.
hxg6 hxg6 37. Kf3 {[#]} Bd4 $1 38. Rd1 c3 39. Rxd3 {[#]} c2 $1 {Weighted Error
Value: White=0.51/Black=0.13} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.24"]
[White "Korobov, Anton"]
[Black "Kuzubov, Yuriy"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2690"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,87,9,15,14,18,19,32,5,16,16,19,21,16,21,33,11,23,13,22,17,19,17,24,31,
39,13,31,31,18,16,35,15,81,75,129,133,149,151,165,112,199,202,249,251,246,246,
244,244,272,221,327,321,507,379,379,379,375,359,348,345,328,283,291,287,325,
335,712,681,630,568,874,874,803,803,1039,1038,1020,1061,865,783]} 1. c4 e6 2.
Nf3 d5 3. d4 a6 4. c5 Nf6 5. Nc3 Nc6 6. Bf4 {D30: Queen's Gambit Declined:
Systems without Nc3.} Nh5 {now scores much better than the old 6...Be7.} 7. Bd2
Nf6 8. h3 {White is slightly better.} Ne4 9. Bf4 Nxc3 10. bxc3 b6 11. cxb6 cxb6
12. e3 Bd6 {[#]} 13. Bd3 $146 ({Predecessor:} 13. Bxd6 Qxd6 14. Bd3 Bd7 15. O-O
O-O 16. Qb1 g6 17. Qxb6 Rfb8 18. Qc5 Qxc5 19. dxc5 Rc8 20. e4 Ne7 21. Ne5 {
1/2-1/2 (80) Praggnanandhaa,R (2608)-Carlsen,M (2847) chess24.com INT 2021})
13... Bxf4 14. exf4 Qc7 15. g3 Bd7 16. O-O Ne7 17. Re1 g6 18. Rc1 Bb5 19. Bb1
Rc8 20. h4 Qd6 (20... h5 $1 $11) 21. h5 Nf5 ({Don't go for} 21... gxh5 $2 22.
Ng5 $18) ({Better is} 21... Qa3) 22. a4 $16 {[%cal Ba2a4,Ba4a5,Ba5b6][%mdl 32]}
Bd7 23. Ne5 Kf8 24. Qd3 (24. Bxf5 $18 gxf5 25. c4) 24... Be8 (24... a5 $16) 25.
Qxa6 $18 Ne7 26. a5 Rb8 27. h6 f6 {[#]} 28. Nd3 {[%cal Rd3c5]} Bc6 29. Re2 {
Strongly threatening Rce1.} ({Weaker is} 29. axb6 Ra8 $11) 29... Qd7 (29... Bd7
$142 30. axb6 Rxb6) 30. axb6 Bb5 (30... Ra8 {is a better defense.} 31. b7 Qxb7
32. Qxb7 Bxb7 33. Rxe6 Kf7) 31. Qa7 Qxa7 32. bxa7 Ra8 33. Rxe6 Kf7 34. Rce1
Rxa7 35. Rb6 Bxd3 36. Bxd3 Rc8 37. Ree6 f5 $2 {[#]} (37... Ng8 38. f5 g5) 38.
Rf6+ {White is clearly winning.} Kg8 39. Ba6 Rf8 40. c4 {[%cal Bc3c4,Bc4c5]
[%mdl 32]} Rxf6 41. Rxf6 Rc7 42. c5 Rc6 43. Rd6 Kf7 44. Bb7 {Weighted Error
Value: White=0.13/Black=0.28} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.25"]
[White "Praggnanandhaa R"]
[Black "Adhiban, B.."]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2618"]
[BlackElo "2672"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,109,0,11,10,14,0,0,0,0,0,2,-4,-9,-9,0,0,0,0,0,0,0,0,0,0,8,0,25,41,36,
18,20,20,20,17,144,145,127,126,144,144,161,144,142,144,134,135,198,157,155,153,
190,190,189,183,215,201,208,191,183,172,393,222,12839,12839,12836,12836,12841,
12842,12843,12843,12844,12844,12845,12844,12845,12845,12845,12845,12848,12847,
12847,12846,12847,12848,12848,12849,12850,12850,12850,27999,27999,27999]} 1. d4
Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Bb5+
Nc6 9. O-O cxd4 10. cxd4 O-O {[%cal Rc6d4]} 11. Bxc6 {D85: Exchange Grünfeld:
Unusual White 7th moves and lines with 7 Nf3.} bxc6 12. Qc2 $5 {[%mdl 4] An
interesting side line.} Bg4 13. Ne5 $1 {[%cal Re5g4] The position is equal.}
Qxd4 14. Bb2 Qb6 15. Rab1 Bxe5 16. Bxe5 Qa6 {[#] And now ...Be2 would win.} 17.
Qc5 Rfe8 {[#]} (17... f6 {is more complex.} 18. Bd4 Be2 19. Rfc1 Bd3 20. Rb3 e5
) 18. Bc3 $146 ({Predecessor:} 18. Ba1 Rad8 19. f3 Bc8 20. Qc3 e5 21. f4 Rd3
22. Qc1 Qxa2 23. Rb2 Qa4 24. Rb8 {1/2-1/2 (51) Alber,H (2325)-Yuferov,S (2400)
Yaroslavl 1990}) 18... Qxa2 19. Rb2 Qa4 20. f3 {Hoping for Rb4.} ({Reject} 20.
Qe5 f6 $17) 20... Bc8 $1 21. Rc1 f6 22. e5 Qf4 23. Re1 {Threatens to win with
exf6.} Qf5 24. g4 Qxf3 {Strongly threatening ...Be6.} 25. exf6 $1 Be6 $1 26.
Rf2 Qxg4+ (26... Qd5 $1 $11 {keeps the balance.} 27. Qxd5 Bxd5) 27. Rg2 $16 {
White wants to mate with Qe5.} Qf4 28. Rxe6 {[%mdl 64] [#] Double Attack} exf6
29. Rxf6 $40 {[%mdl 128] White is out for blood.} Qc1+ 30. Rf1 {White
threatens Qc4+ and mate.} Qe3+ 31. Qxe3 Rxe3 32. Rc2 Rd8 (32... Rd3 $16 33. Ra1
Rd5) 33. Ra1 Rd7 34. Ra6 Re6 35. Rd2 Rxd2 36. Bxd2 $18 {[%mdl 4096] Endgame
KRB-KR} g5 37. Rxa7 h6 38. Rc7 Re2 39. Bc3 Re6 $2 (39... Re3 {was necessary.})
40. Kf2 (40. Rg7+ $142 Kf8 41. Kf2) 40... Rd6 $2 (40... Re4 41. Rxc6 Kh7) 41.
Ke3 Re6+ 42. Kf3 c5 43. Kg4 Re2 44. h3 Re3 45. Bg7 Re6 46. Kf5 Ra6 47. Bf6 Kf8
48. Rxc5 Ra3 49. Rc3 Ra4 50. Re3 Rc4 51. Kg6 {Intending Bg7+ and mate.} Rc6 52.
Rd3 {[%cal Rd3d8]} Rc8 53. Rd8+ Rxd8 54. Bxd8 Kg8 55. Kxh6 {Weighted Error
Value: White=0.09/Black=0.18} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.26"]
[White "Sethuraman, S.P.."]
[Black "Sargissian, Gabriel"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2620"]
[BlackElo "2664"]
[Annotator "TA"]
[PlyCount "143"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,143,14,14,4,11,14,13,0,18,0,8,12,4,17,8,10,42,29,36,37,18,27,41,37,
40,39,39,44,35,48,65,40,50,56,27,29,72,38,45,54,146,146,140,145,160,161,166,
148,151,134,147,127,146,124,289,107,125,125,125,116,131,10,79,91,80,-51,-56,
-56,-56,-92,-58,-55,-40,-523,-551,-429,-363,-339,-316,-369,-363,-352,-353,-403,
-400,-1815,-279,-758,-752,-699,-689,-859,-1130,-1267,-524,-510,-479,-464,-452,
-595,-362,-284,-141,-154,-80,-80,-83,-83,-8,-8,-8,-8,-8,-9,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 O-O 6. O-O
d6 7. Re1 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0
Bc5.} Ne7 8. d4 Bb6 9. a4 {[#]} c6 $146 ({Predecessor:} 9... exd4 10. a5 Bxa5
11. Rxa5 c6 12. Ra4 cxb5 13. Rxd4 Ne8 14. Bg5 f6 15. Qb3+ Kh8 {1-0 (67)
Matusek,J (2259)-Herriot,B (2193) ICCF email 2018}) 10. Bf1 Ng6 11. Nbd2 Re8
12. h3 h6 13. Qc2 Be6 14. b4 Bc7 15. c4 exd4 16. Nxd4 a5 17. b5 Bb6 18. Bb2 Rc8
19. bxc6 bxc6 20. N2b3 Nd7 21. Nf5 Bxf5 22. exf5 Rxe1 23. Rxe1 Ngf8 24. Bc3 (
24. Rd1 {keeps more tension.} d5 25. Qe2 Nf6 26. cxd5 cxd5 27. Bxf6 Qxf6 28.
Rxd5 Qc3 29. Qb5) 24... Nh7 $1 25. Qd2 $36 {[%mdl 2048] White has the
initiative.} Nc5 ({Black should try} 25... Qh4 $1 $14) 26. Nxc5 $16 ({And not} 
26. Nxa5 Nf6 $17) 26... Bxc5 27. Bxa5 Qd7 28. Bd3 d5 29. Bc3 d4 30. Bb4 Qd6 31.
Bxc5 Qxc5 32. a5 Qa3 $2 (32... Nf6 $16 33. Ra1 Qa7) 33. Bf1 $2 (33. c5 $1 $18 {
and the rest is easy.}) 33... c5 34. Rb1 Nf6 35. Bd3 Re8 36. Rb5 (36. Kh2 $16)
36... Ne4 (36... Qa1+ $11 37. Rb1 Qa4) 37. Bxe4 Rxe4 {[%mdl 4096] Endgame
KQR-KQR} 38. a6 (38. Kh2 $16) 38... Qa1+ $15 39. Kh2 {And now Ra5 would win.}
Qxa6 40. Qd3 Qd6+ 41. g3 $1 Re1 42. Qd2 $2 {[%mdl 8192]} (42. f6 $15) 42... Qe5
$19 43. Qd3 Rc1 {( -> ...Qe1)} 44. f6 Rc3 45. Qd2 Rxc4 46. fxg7 Qf6 ({Not} 
46... Kxg7 47. Rb6 $15) ({But not} 46... Qxg7 $2 47. Rb8+ Kh7 48. Qd3+ Qg6 49.
Qxc4 $18) 47. h4 Kxg7 48. Qe2 (48. Rb7 $142 Rc3 49. Rd7) 48... Qe6 $2 (48... d3
49. Qxd3 Qxf2+ 50. Kh3 Rc2) 49. Qf3 (49. Qd2) 49... Rc3 50. Qf4 d3 51. Qf3 Rc2
52. Kg2 c4 (52... d2 $142 53. Rb8 Rc1) 53. Rd5 Re2 54. Rd4 {intending Rg4+.}
Re5 55. Qg4+ Qxg4 56. Rxg4+ {KR-KR} Kf6 57. Rxc4 {[#] White wants to play Rd4.}
Rd5 (57... Ke6 $142 $1 {Threatens to win with ...d2.} 58. Rc1 Kd5) 58. Rc1 $17
{[#]} Ke5 $1 {[%cal Re5d4]} 59. Kf1 Kd4 ({Better is} 59... Ke4 $17 {...d2 is
the strong threat.} 60. Rb1 Re5) 60. Ke1 $11 {The position is equal.} Re5+ 61.
Kd1 Re2 62. Rc7 $1 f5 (62... f6 {is more complex.} 63. Rd7+ Ke4 64. Re7+ Kf3
65. Rf7 Re6) 63. Rh7 Rxf2 {aiming for ...h5!} 64. Rxh6 Rg2 (64... Rf3 {with
more complications.} 65. Rf6 Ke3 66. Re6+ Kf2 67. Rg6 Rxg3 68. Rxg3 Kxg3 69. h5
f4) 65. Rf6 Ke5 (65... Ke4 {is interesting.} 66. Re6+ Kf3 67. Rf6 Ke4) 66. Rg6
$1 Rh2 67. Rg8 Ke4 68. Re8+ Kf3 69. Rf8 f4 (69... Ke3 $5 70. Re8+ $8 Kd4 $11)
70. gxf4 Ke3 {[%cal Rh2h1]} 71. Re8+ Kxf4 72. Rf8+ {What a bad dream for Black.
Weighted Error Value: White=0.58/Black=0.39} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.27"]
[White "Sjugirov, Sanan"]
[Black "Sadhwani, Raunak"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2663"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,117,14,15,-11,4,8,11,5,4,12,16,8,24,20,20,20,23,23,36,38,35,37,43,45,
57,41,43,36,39,30,34,21,25,25,68,21,18,20,21,24,66,43,43,43,58,24,59,60,61,52,
59,61,90,90,90,90,90,90,90,90,90,90,90,90,90,90,90,90,90,90,90,52,52,52,52,52,
52,35,1153,1017,1017,969,964,545,469,469,2363,2354,1766,1758,1373,1313,1163,
1145,1152,1137,1145,417,987,401,508,401]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O
Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Nc3 Be7 10. Bf4 {
C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} Nh4 (10... Bd7 {keeps more
tension.} 11. Ne4 Kc8 12. h3 a5 13. Rad1 Be6) 11. Rad1+ Ke8 12. Nxh4 {The
position is equal.} Bxh4 13. Ne2 Be7 14. Nd4 {[#]} h5 $146 ({Predecessor:} 
14... a6 15. e6 Bxe6 16. Nxe6 fxe6 17. Rfe1 Bf6 18. b3 Ke7 19. Bxc7 Rhc8 20.
Bd6+ Kf7 {0-1 (133) Grischuk,A (2777)-Aronian,L (2773) Lichess.org INT 2020})
15. e6 $36 {[%mdl 2048] Black is under pressure.} Bxe6 16. Nxe6 fxe6 17. Rfe1
g5 18. Bxc7 Rc8 19. Ba5 Rh6 20. h3 b6 21. Bc3 Rd8 22. Rxd8+ Bxd8 $14 {[%mdl
4096] Endgame KRB-KRB} 23. Re4 c5 24. g4 Kd7 25. Bd2 Bf6 26. b3 (26. h4 $5 {
[%cal Rh4g5]} Rh8 27. hxg5 Bxb2 28. gxh5 Rxh5 29. f4 $14) 26... hxg4 27. hxg4
Rh8 28. Kg2 Rd8 29. Re1 Ke7 30. Be3 Kf7 31. Kf3 Rd7 32. Ke2 Rd5 33. c4 Rd7 34.
Rd1 Rxd1 35. Kxd1 {KB-KB} e5 36. Ke2 Ke6 37. Kd3 Be7 38. Ke4 Bf6 39. Bd2 Be7
40. Bc1 Bd8 41. Ba3 Be7 42. Bb2 Bd6 43. Bc3 Bc7 44. b4 cxb4 45. Bxb4 Bd8 $1 46.
Bf8 Bf6 47. c5 {cxb6 is the strong threat.} bxc5 {[%mdl 8192] Loses the game.}
(47... Bd8 $14) 48. Bxc5 $18 a6 49. Bb6 $1 {[%cal Rb6c7]} Be7 {[#]} 50. Bc7 $1
{[%cal Rc7e5]} Bc5 {[#]} 51. f3 Bb4 (51... Ba3 $142 52. Bxe5 Bb4) 52. Bxe5 Be7
53. Bb2 Bd8 54. Bc1 Bf6 55. Bd2 Bd8 56. Kd4 Kd6 57. Kc4 (57. Bc3 $142 Bf6+ 58.
Kc4) 57... Kc6 (57... Bf6 $142 58. f4 gxf4) 58. Bb4 Bf6 59. Bf8 {Weighted
Error Value: White=0.14/Black=0.08} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.28"]
[White "Ter-Sahakyan, Samvel"]
[Black "Grandelius, Nils"]
[Result "1/2-1/2"]
[ECO "D86"]
[WhiteElo "2607"]
[BlackElo "2662"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,79,31,37,35,0,21,0,33,8,6,10,13,0,8,0,2,0,0,0,0,0,0,0,0,8,25,18,12,7,
65,64,64,64,64,63,64,64,41,0,24,0,5,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6
3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 O-O
10. O-O Bg4 11. f3 Bd7 12. Rb1 cxd4 13. cxd4 a6 14. a4 Na5 15. Bd3 {[#]} Qc7
$146 {D88: Exchange Grünfeld: Classical Line: 10 Be3 cxd4 11 cxd4.} ({
Predecessor:} 15... Rc8 16. Rb4 b5 17. axb5 axb5 18. Bxb5 Bxb5 19. Rxb5 Nc4 20.
Bf2 Bh6 21. Qd3 Qd6 22. Rd1 Qa3 23. Qxa3 Nxa3 {1/2-1/2 (45) Pulvett Marin,D 
(2487)-Cumming,R (2361) Guimaraes 2021}) 16. Rc1 Qb6 17. Rb1 Qc7 18. d5 {
[#] Strongly threatening Bb6.} Nc4 19. Bxc4 Qxc4 20. Qd2 Qxa4 21. Bd4 {With
the idea Bxg7.} Bb5 {[#] Hoping for ...Bxd4+.} 22. Bxg7 Kxg7 23. Nc3 $36 {
[%mdl 2048] Black is under pressure.} Qa5 24. Qd4+ Kg8 25. Nxb5 axb5 26. Qc5
Qa7 27. Qxa7 Rxa7 $11 {[%mdl 4096] Endgame KRR-KRR} 28. Rfc1 Rfa8 (28... f5 $11
) 29. Rxb5 $14 Ra1 30. Rxa1 Rxa1+ {KR-KR} 31. Kf2 Ra7 32. Ke3 Kf8 33. Kd4 Ke8
34. e5 Kd7 {The position is equal.} 35. Kc5 Kc7 36. d6+ exd6+ 37. exd6+ Kd7 38.
Kd5 b6 39. Rxb6 Ra5+ 40. Ke4 {Weighted Error Value: White=0.08/Black=0.07}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.29"]
[White "Cheparinov, Ivan"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2659"]
[BlackElo "2617"]
[Annotator "TA"]
[PlyCount "151"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,151,4,0,22,29,25,29,45,46,64,65,71,72,71,67,131,0,61,68,114,116,114,
108,108,102,132,124,142,144,142,131,165,180,135,70,72,69,67,58,50,59,69,60,71,
47,55,47,63,37,52,2,2,2,2,2,6,2,2,2,2,2,2,2,2,2,12,0,31,0,19,12,45,0,26,0,9,12,
45,7,31,25,23,17,16,20,20,18,42,20,20,20,20,20,20,18,20,19,19,19,19,19,19,19,
19,19,19,19,19,19,19,19,19,19,27,2,4,7,7,8,8,0,3,0,7,8,8,0,0,0,0,0,0,0,0,0,37,
0,0,0,37,37]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+ Nc6 6. a3 Bxc3+
7. bxc3 dxc4 {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 8.
Qxc4 O-O 9. Bg5 h6 {White has an edge.} 10. Bh4 g5 11. Bg3 Qd5 {[#]} 12. Qd3
$146 ({Predecessor:} 12. Qxd5 Nxd5 13. c4 Nb6 14. e3 Na5 15. Rc1 c5 16. dxc5
Na4 17. Bd6 Re8 18. Nd2 {0-1 (54) Dal Borgo,A (2180)-Lombard,P (1953) Fontaine
2009}) 12... Ne4 13. Bxc7 b6 {[#]} (13... Qb3 $14) 14. Ne5 (14. h4 $1 $16 {
[%cal Rh4g5]}) 14... Nxe5 (14... Ba6 $1 $11 15. Qxa6 Rac8) 15. Bxe5 $14 f6 16.
Bg3 Kg7 17. f3 Nxg3 18. hxg3 Bb7 19. e3 Rac8 20. c4 Qd6 {[#]} 21. Kf2 Rc7 22.
Be2 e5 23. dxe5 ({White should play} 23. d5 $16 {Threatens to win with Rxh6!}
f5 24. Qb3) 23... Qxe5 24. Rad1 Re8 25. Qd4 Qxd4 26. Rxd4 Rce7 27. Bd3 Re5 28.
Rc1 R8e7 29. e4 Rc7 30. Rc3 Rec5 31. Rb3 Ba6 32. Rb4 Ra5 33. a4 Bb7 $1 34. Ke3
Bc6 35. Bc2 Rd7 36. Rxd7+ Bxd7 $11 {[%mdl 4096] Endgame KRB-KRB} 37. g4 Kf7 38.
Kd4 Ke7 39. g3 Kd6 40. Bd1 Bc6 41. f4 Ke6 42. Bc2 Be8 43. Bb3 {Black must now
prevent c5+.} Kd6 44. Bd1 Ke6 45. Bc2 Bc6 46. Rb1 Bxa4 47. Bd3 Bd7 48. Rh1 Kf7
49. Rxh6 gxf4 50. Rh7+ (50. gxf4 {is interesting.} Bxg4 51. Rh4 Bd7 52. Rh7+
Ke8 53. Be2) 50... Ke8 51. gxf4 {g5! is the strong threat.} Bxg4 52. f5 Bd1 53.
Rh1 Ba4 54. Be2 Bc6 55. Rh8+ Ke7 56. Rh7+ Kf8 $1 57. Bh5 {Strongly threatening
Rf7+.} Re5 58. Rf7+ Kg8 59. Rxf6 Rxe4+ 60. Kd3 Rh4 61. Rxc6 Rxh5 {KR-KR} 62.
Ke4 Rh4+ 63. Ke5 a5 64. Ke6 Re4+ 65. Kd5 Rf4 66. Ke5 Rh4 67. Ke6 Re4+ 68. Kf6
a4 69. Rc8+ Kh7 70. Rc7+ Kh6 71. Rb7 (71. c5 {with more complications.} bxc5
72. Rc8 Kh7 73. Ra8 Rb4 74. Kg5) 71... Rxc4 72. Rxb6 Kh7 73. Ra6 Rb4 74. Kf7
Rb7+ 75. Kf6 a3 76. Rxa3 {Weighted Error Value: White=0.11/Black=0.11} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.30"]
[White "Shirov, Alexei"]
[Black "Adly, Ahmed"]
[Result "1-0"]
[ECO "B69"]
[WhiteElo "2659"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,73,37,37,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-31,-21,-25,127,115,284,267,
403,385,356,374,353,263,256,256,256,256,249,249,350,340,340,340,431,428,431,
431,431,431,458,441,434,440]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3
Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7 10. Nf3 b5 11. Bxf6 gxf6 12. Bd3
Qb6 13. Kb1 O-O-O {B69: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7 9 f4 Be7
10 Nf3 b5 11 Bxf6.} 14. a4 $5 {[%cal Ra4b5][%mdl 4] Exploring less charted
territory.} b4 {[#]} 15. Nd5 $146 ({Predecessor:} 15. Ne2 Kb8 16. Rhf1 Bc8 17.
f5 d5 18. fxe6 fxe6 19. exd5 Rxd5 20. Nf4 Rd6 21. Qe2 {1-0 (42) Klovans,J 
(2470)-Scheipl,R (2250) Dresden 1999}) 15... exd5 {The position is equal.} 16.
exd5 Nb8 17. Rhe1 Rde8 18. a5 $1 {[%cal Ra5b6]} Qxa5 19. Re4 {Threatens to win
with Rc4+.} Bd8 $1 20. Rxb4 Bc7 21. Nd4 {Strongly threatening Nb3.} Qxd5 {
White must now prevent ...Re7.} 22. Qc3 Qxg2 $2 (22... Qh5 $11 23. Rf1 Be6 24.
Nxe6 fxe6) 23. Nf5 $1 $16 {[%cal Rf5d6] Nxd6+ is the strong threat.} Re6 {
[#] This move loses the game for Black.} (23... Bc6 $16 {was necessary.}) 24.
Be4 $1 $18 {[%cal Re4g2][%mdl 512]} Qg4 (24... Qe2 $142 25. Nxd6+ (25. Bf3 Qf2
$18) 25... Rxd6 26. Rxd6 Bb5 27. Bf5+ (27. Rxf6 Re8 $16) 27... Kb7 28. Be4+ Kc8
29. Bf5+ (29. Rxf6 Re8 $16) 29... Kb7 30. Be4+ Kc8) 25. Nxd6+ $1 Rxd6 ({
Wrong is} 25... Kd8 $2 26. Bf3 $1 $18) 26. Rxd6 Bb5 27. Qc5 ({Resist} 27. Rxf6
Qg1+ 28. Ka2 Rd8 $18) 27... Nd7 {[#]} 28. Rxd7 {[%mdl 576] Deflection} Bxd7 {
[#]} (28... Qxd7 $2 {too greedy.} 29. Bf5 $18) 29. Rc4 $1 $40 {[%csl Gc4][%cal
Rc5c7][%mdl 128] Black is in trouble.} Qxf4 {[#] And now ...Kd8 would win.} 30.
Bb7+ $1 {[%mdl 512]} Kxb7 (30... Kd8 $142) 31. Rxf4 Bxf4 32. Qb4+ Kc8 {Hoping
for ...Be5.} 33. Qxf4 {White is clearly winning.} Be6 34. Qxf6 Rd8 {[%cal
Rd8d1]} 35. b3 h5 36. Qc3+ Kb7 37. Qf3+ {Weighted Error Value: White=0.06/
Black=0.38} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.31"]
[White "Indjic, Aleksandar"]
[Black "Anton Guijarro, David"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2612"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "144"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,144,-6,0,0,4,-8,-15,-33,-8,-8,-11,-7,-34,-53,-21,-28,-17,-20,-22,-16,
-18,-56,-66,-125,-4,-20,-14,-26,0,0,15,-35,-32,-32,-31,-35,-34,-46,-37,-39,-42,
-45,-36,-77,-76,-77,-64,-93,-87,-88,-87,-87,-87,-87,0,0,0,0,0,0,0,0,0,-119,0,0,
0,0,0,0,30,0,0,0,0,0,0,0,0,0,0,0,0,0,29,5,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3
e6 3. Bf4 Bd6 4. e3 Nf6 5. Nbd2 O-O 6. Ne5 c5 7. c3 {D02: 1 d4 d5 2 Nf3
sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} c4 8. g4 Nc6 9. g5 Bxe5
10. Bxe5 {[#]} Nd7 $146 ({Predecessor:} 10... Nxe5 11. dxe5 Nd7 12. Nf3 Qc7 13.
Qd4 b5 14. h4 Rb8 15. Bh3 b4 16. O-O bxc3 17. bxc3 {1/2-1/2 (43) Blazsik,Z 
(2034)-Polyak,I (2204) Hungary 2009}) 11. Bd6 Re8 12. Nf3 e5 (12... Qb6 {
is more complex.} 13. h4 e5 14. dxe5 Qxb2 15. Rc1 Ndxe5 16. Nxe5 Nxe5 17. Bxe5
Rxe5 18. Bxc4 Bf5) 13. dxe5 Ndxe5 (13... Qb6 {looks sharper.} 14. Qd2 Ndxe5 15.
Nxe5 Nxe5 16. Bxe5 Rxe5 17. h4 Bf5) 14. Bxe5 Nxe5 15. Nxe5 Rxe5 16. Bxc4 Qxg5
17. Be2 {[#]} (17. Bf1 $15) 17... Qh4 (17... Bh3 $1 $17 18. Bf1 Qh4) 18. Qd4
$11 Re4 19. Qd2 Bd7 (19... Bf5 {is interesting.} 20. Bf3 Rd8 21. h3 Rc4 22. Rd1
d4) 20. Bf3 Bg4 21. Bxg4 Qxg4 22. Qe2 Qe6 23. a3 Rc8 24. Qd3 g6 25. O-O-O Rc5
26. Rhg1 Rh4 27. Rh1 a5 28. Kb1 b5 29. f3 Rhc4 30. Rhe1 b4 31. cxb4 axb4 32. e4
{[%cal Re4d5]} Qa6 ({Black should play} 32... d4 $17 {Strongly threatening ...
Qa6.} 33. Rc1 bxa3 34. Qxa3 Qb6 35. Rxc4 Rxc4) 33. exd5 bxa3 ({Much weaker is} 
33... Rc1+ 34. Ka2 $16) 34. Qxa3 Qxa3 35. bxa3 {[%mdl 4096] Endgame KRR-KRR}
Rb5+ 36. Ka1 Rc3 {[%cal Rc3a3] [#]} 37. Re8+ Kg7 {[%cal Rc3a3][%mdl 1024]
Black has strong compensation.} 38. Ra8 Rbb3 39. Ka2 Rb7 40. Rd2 Rd7 (40...
Rxf3 {is more complex.} 41. d6 Rd7 42. Kb2 Rf5 43. a4 Rc5) 41. Ra6 Rxf3 42. a4
Rc3 43. Rb6 f5 44. Rb3 Rc5 45. Rb5 Rc4 46. Kb3 Rc1 47. a5 Kf6 48. Rb6+ Ke7 {
The position is equal.} 49. Kb4 f4 50. a6 {next Re2+ is good for White.} f3 51.
Re6+ Kd8 52. Rf6 {Hoping for d6.} Rb1+ $1 53. Kc5 {aiming for d6.} Rc7+ 54. Kd4
{Threatens to win with d6.} Rb4+ 55. Ke3 Rc3+ $1 56. Kf2 Rg4 {( -> ...Rg2+)}
57. Rxf3 Rxf3+ 58. Kxf3 {KR-KR} Ra4 59. Rb2 {And now Rb6 would win.} Rxa6 60.
Ke4 h5 61. Ke5 Kd7 62. Rb7+ Kd8 63. Rg7 Ke8 64. h4 Ra4 65. Rxg6 (65. Ke6 {
keeps more tension.} Re4+ 66. Kf6 Rxh4 67. Rxg6 Re4 68. Rh6) 65... Rxh4 66. Kd6
Rd4 67. Re6+ (67. Rg1 {with more complications.} h4 68. Re1+ Kf7 69. Ke5 Rd3
70. d6) 67... Kf7 68. Kc6 h4 69. Re1 Rc4+ 70. Kb5 Rd4 71. Kc6 Rc4+ 72. Kb5 Rd4
{Weighted Error Value: White=0.07/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.32"]
[White "Rakhmanov, Aleksandr"]
[Black "Henriquez Villagra, Cristobal"]
[Result "0-1"]
[ECO "A16"]
[WhiteElo "2657"]
[BlackElo "2608"]
[Annotator "TA"]
[PlyCount "174"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,174,3,25,4,4,1,0,0,0,0,2,0,0,7,2,-11,22,25,28,14,22,15,13,-3,0,-8,-4,
-9,0,-8,12,6,6,5,16,-19,-16,-16,-14,-31,-35,-35,-36,-62,0,0,0,0,0,-12,-22,-25,
-8,-16,0,0,0,-23,-17,-26,-19,-26,0,0,0,0,0,0,0,0,0,-16,-16,-28,-16,-29,-26,-36,
-36,-37,-37,-57,-57,-55,-2,-37,-12,-12,-10,-16,-25,-20,-10,-10,-10,-28,-25,-42,
-42,-64,-64,-71,-57,-61,-37,-51,-37,-71,-46,-64,-37,-37,-37,-80,-80,-152,-152,
-1029,-709,-822,-1214,-1197,-1197,-1172,-1172,-1092,0,-1096,-1071,-766,-2359,
-2299,-653,-3487,-1754,-1458,-5132,-5285,-3919,-6524,-6215,-29968,-29969,-6412,
-3306,-29970,-29970,-29973,-29974,-29974,-29975,-29975,-29976,-29976,-29977,
-29977,-29978,-29978,-29979,-29979,-29980,-29980,-29981,-29980,-29981,-29982,
-29983]} 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. d3 d6 6. h3 {A16: English
Opening: 1...Nf6 with ...d5.} c5 7. e3 Nc6 8. Nge2 {The position is equal.} Bd7
9. b3 Rb8 10. Bb2 a6 {[#]} 11. Qd2 $146 ({Predecessor:} 11. O-O b5 12. Qd2 Nb4
13. Rfd1 Qb6 14. Nf4 e5 15. Nfd5 Nbxd5 16. Nxd5 Nxd5 17. cxd5 {1/2-1/2 (34)
Velikov,P (2416)-Djukic,N (2551) Sunny Beach 2013}) 11... b5 12. Rd1 Nb4 13.
O-O Ne8 14. Ba1 Nc6 15. f4 f5 16. Nd5 Bxa1 17. Rxa1 e6 18. Ndc3 Nf6 19. Rae1
Ne7 20. e4 Qc7 21. Qe3 b4 22. Nb1 e5 23. Nd2 Rbe8 24. fxe5 dxe5 25. Nf3 Qd6 26.
Nh4 fxe4 (26... Kh8 $15) 27. dxe4 $11 Nc6 28. Qg5 Kh8 29. Rf2 Ng8 30. Ref1 {
Hoping for Nxg6+!} Rxf2 31. Rxf2 Rf8 32. Rxf8 Qxf8 33. Qd2 Be6 34. Nc1 Nf6 35.
Nd3 Kg7 36. Qe3 Nd7 37. Nf5+ Kh8 38. g4 a5 ({Don't play} 38... gxf5 $6 39. exf5
Bxf5 40. gxf5 $16 (40. Bxc6 Bxd3 41. Qxd3 Nf6 $14)) 39. Nb2 Bg8 ({But not} 
39... gxf5 $6 40. exf5 Qd6 41. fxe6 $16) 40. Nh4 Nd4 41. Nf3 Nxf3+ 42. Bxf3 g5
43. Kf2 h6 44. Qd3 Nb8 45. Nd1 Nc6 46. Ne3 {With the idea Qd7.} Qd8 (46... Nd4
$15 47. Nd5 Be6) 47. Nd5 Be6 48. Bd1 Kg7 49. Ke1 Bf7 50. Qg3 Bg6 51. Bc2 Qd6
52. Bd3 Nd4 53. Qf2 Be8 54. Bc2 Qf8 {And now ...Qxf2+ would win.} 55. Bd1 Qxf2+
56. Kxf2 $17 {[%mdl 4096] Endgame KBN-KBN} Bc6 57. Ke3 Kf7 58. Nc7 Ke7 59. Nd5+
Ke6 60. Kf2 Kf7 61. Ke3 Ne6 {White is now going downhill.} 62. Kd3 (62. Kf3
$142) 62... Nf4+ 63. Nxf4 $2 (63. Kd2 $17) 63... exf4 {KB-KB} ({Less strong is
} 63... gxf4 64. h4 $15) 64. Bf3 Ke6 65. Bg2 Ke5 66. Bf3 Be8 67. Bd1 Bc6 68.
Bf3 a4 69. bxa4 Bxa4 70. Be2 Bd7 (70... Bc6 $142 71. Bf3 Bd7) 71. Bf3 Bc6 72.
Bg2 Be8 73. Bf3 Bg6 74. Bg2 h5 75. Bf3 h4 76. Bg2 Be8 77. Bf3 Bc6 {Black mates.
} 78. Bg2 Ba4 79. Bf3 b3 80. axb3 Bxb3 81. Be2 Ba2 82. Kc2 Kxe4 83. Kb2 {[#]}
Ke3 $1 84. Bf1 {[#]} Kf2 $1 85. Bd3 {[#]} Kg2 $1 86. Kxa2 Kxh3 87. Kb3 Kg3 {
Weighted Error Value: White=0.08/Black=0.08} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.33"]
[White "Sindarov, Javokhir"]
[Black "Cori, Jorge"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "2587"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,59,19,14,25,25,25,28,32,22,18,31,32,0,24,14,23,21,45,26,31,27,41,12,
18,17,23,21,26,9,68,60,63,63,68,59,62,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6
2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. Be2 Nd7 {B11: Caro-Kann: Two
Knights Variation.} 7. d4 dxe4 8. Nxe4 Ngf6 {White has an edge.} 9. Nd2 Be7 10.
O-O O-O 11. Rd1 {[#]} a5 $146 ({Predecessor:} 11... Nb6 12. Nf1 a5 13. a4 Nbd5
14. b3 Re8 15. Bb2 Bf8 16. Rd2 Nd7 17. Rad1 Qf6 {1/2-1/2 (90) Bethke,R (2332)
-Haba,P (2447) Berlin 2021}) 12. a4 Nb6 13. c3 Qd5 14. Qd3 Rfd8 15. Nf3 Qe4 16.
Qe3 c5 17. Bd3 Qxe3 18. fxe3 Nfd7 19. Bb5 f5 (19... Nf6 $11) 20. Re1 $14 Bf6
21. e4 fxe4 22. Rxe4 cxd4 23. Nxd4 (23. cxd4 $14 Nf8 24. b3) 23... Nc5 $11 {
The position is equal.} 24. Re1 Bxd4+ 25. cxd4 Nb3 {[%mdl 64] [#] Double Attack
} 26. Rb1 Nxd4 27. Be3 Nxb5 28. Bxb6 Rd6 29. Bf2 Nd4 30. Bxd4 {Weighted Error
Value: White=0.09/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.34"]
[White "Najer, Evgeniy"]
[Black "Jobava, Baadur"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "2654"]
[BlackElo "2582"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,77,54,35,76,76,77,85,76,75,76,64,68,70,71,82,92,91,113,104,149,158,
183,150,233,232,200,169,149,148,166,131,204,191,246,239,247,250,240,230,234,
237,216,219,218,208,239,221,226,228,260,234,280,282,266,271,289,290,273,270,
310,208,675,619,814,798,760,699,602,602]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4.
Nxd4 Bb4+ 5. c3 Be7 6. Bc4 d6 {C45: Scotch Game.} 7. Nxc6 bxc6 8. Qb3 Nf6 {
White is better.} 9. Bxf7+ $40 {[%mdl 128] White wants a kill.} Kf8 10. Be6
Nxe4 {White must now prevent ...Nc5.} 11. Bxc8 Qxc8 12. O-O Nc5 13. Qc2 {[#]}
Qg4 $146 ({Predecessor:} 13... Qe6 14. Be3 Nd7 15. Nd2 Kf7 16. Rfe1 Bf6 17. Nf3
Ne5 18. Nxe5+ dxe5 19. Rad1 Rhd8 20. Rxd8 Rxd8 {1-0 (31) Manca,F (2397)-Tan,J 
(2448) Budapest 2017}) 14. Be3 Ne6 15. Nd2 Re8 16. h3 Qg6 (16... Qh5 $16 {
was worth a try.} 17. Bxa7 c5) 17. Qa4 $18 c5 18. Qxa7 Kf7 19. Qb7 Qf5 20. g4
Qd3 (20... Qg6 $16) 21. Rad1 h5 {[#]} (21... Rhf8 {might work better.}) 22. Ne4
$1 Nd8 23. Ng5+ (23. Rxd3 Nxb7 24. Bf4 Nd8 $16) 23... Kg8 24. Qb3+ ({Weaker is
} 24. Rxd3 Nxb7 25. Ne4 hxg4 $16) (24. Qxc7 $6 Qg6) 24... c4 25. Qa4 ({Don't do
} 25. Rxd3 $6 cxb3 26. axb3 hxg4) 25... Qg6 26. Qxc4+ {[%mdl 64] Double Attack}
Kf8 {[#]} 27. Qe4 $1 Rh6 (27... Qxe4 28. Nxe4) 28. Rd5 hxg4 29. Qxg4 ({But not
} 29. hxg4 $6 Nf7) 29... Bf6 30. Rf5 {Strongly threatening Nh7+!} Nc6 {Black
wants to play ...Ne5.} 31. Nf3 Ne7 {[#]} 32. Rxf6+ Qxf6 (32... gxf6 33. Bxh6+)
33. Bxh6 gxh6 34. Re1 Rb8 35. Re4 {And now Rf4! would win.} Nd5 (35... Qg6 36.
Qxg6 Nxg6) 36. c4 {White is clearly winning.} h5 37. Qxh5 Nf4 {[#]} 38. Rxf4 $1
{[%mdl 64] Deflection} Qxf4 39. Qh8+ {Weighted Error Value: White=0.09/Black=0.
39} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.35"]
[White "Goryachkina, Aleksandra"]
[Black "Oparin, Grigoriy"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "2602"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,62,4,20,8,12,10,18,10,20,21,20,23,40,21,15,9,8,8,16,13,15,0,4,0,0,0,
0,0,0,0,0,0,26,32,60,0,13,0,7,-393,-402,-385,-380,-354,-347,-550,-558,-540,
-526]} 1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 b6 5. Bg2 Bb7 6. O-O Be7 7. Re1 d5
8. cxd5 Nxd5 {8...Nxd5 is better than 8...exd5.} 9. d4 {A30: Symmetrical
English: Double Fianchetto and Hedgehog.} cxd4 10. Qa4+ Nd7 11. Nxd5 {The
position is equal.} ({Reject} 11. Qxd4 Bf6 $15) 11... Bxd5 12. Nxd4 {Nc6 is
the strong threat.} O-O 13. Nc6 Nc5 14. Nxe7+ (14. Qc2 {seems wilder.} Bxc6 15.
Bxc6 Rc8 16. Rd1 Qc7 17. Bg2) 14... Qxe7 15. Qa3 Bxg2 16. Kxg2 {[#]} e5 $146 ({
Predecessor:} 16... Qb7+ 17. f3 Qa6 18. Qxa6 Nxa6 19. Bd2 Rfd8 20. Red1 f6 21.
Be1 Kf7 22. Rxd8 Rxd8 {1/2-1/2 (34) Lorparizangeneh,S (2515)-Ovchinnikov,V 
(2380) St Petersburg 2017}) 17. Be3 Qb7+ 18. Kg1 Ne6 19. Rac1 f5 20. Qb3 Rae8
21. Rc4 Kh8 22. f3 f4 23. Bf2 fxg3 24. hxg3 Ng5 {[%cal Rf8f3] White must now
prevent ...Rxf3!} 25. Qe3 (25. Be3 $14 Rxf3 26. Rg4 (26. exf3 Nxf3+ {[%mdl 64]
Double Attack} 27. Kf2 Nxe1 $14)) 25... h6 26. Rh4 {Strongly threatening Qxg5.}
Kg8 27. Rf1 $2 {[%mdl 8192] [#] Now White is beyond hope.} (27. Qb3+ $11 Qf7
28. Qxf7+ Rxf7 29. Be3) 27... Rxf3 $1 $19 {[%mdl 512]} 28. Qc1 {[#]} Ref8 $1
29. Qc4+ Kh8 30. Rh5 (30. Qc1 {was worth a try.} R3f5 31. Qe3) 30... R3f6 31.
Rh4 Qd7 {Weighted Error Value: White=0.47/Black=0.06} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.36"]
[White "Sevian, Samuel"]
[Black "Bartel, Mateusz"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2654"]
[BlackElo "2597"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,87,22,19,21,34,5,-5,-12,20,-17,0,0,40,28,32,42,65,48,47,61,65,55,66,
27,114,151,117,135,147,126,140,141,139,138,135,127,117,100,134,100,97,105,145,
150,137,145,127,119,147,147,147,147,150,131,139,139,113,117,145,91,162,162,159,
161,160,152,186,164,372,380,360,371,358,370,560,304,441,-424,36,33]} 1. c4 c6
2. Nc3 {[%cal Bb1c3,Bc3e4,Be4g3][%mdl 32]} d5 3. d4 dxc4 4. e3 b5 5. a4 b4 6.
Ne4 {D10: Slav Defence: 3 cxd5 (without early Nf3) and 3 Nc3.} Qd5 7. Ng3 {
[%mdl 1024] White has compensation.} Nf6 8. Be2 {The position is equal.} g6 {
[#]} ({Wrong is} 8... Qxg2 $2 9. Bf3 $18) 9. h4 $146 ({Predecessor:} 9. Nf3 Bg7
10. O-O O-O 11. Ne5 Ba6 12. Bd2 c3 13. bxc3 bxc3 14. Bxc3 Bxe2 15. Nxe2 {
1/2-1/2 (31) Korobov,A (2690)-Vallejo Pons,F (2701) Toledo 2021}) 9... Ba6 ({
But not} 9... Qxg2 $2 10. Bf3 $18) 10. h5 g5 ({Don't blunder} 10... Qxg2 $2 11.
Bf3 $18) 11. Nf3 $1 Nbd7 12. b3 c5 13. bxc4 $1 Bxc4 14. e4 $1 {[%cal Re4d5]}
Bxe2 15. Qxe2 Qb7 16. Bxg5 Rg8 (16... cxd4 $1 $11 17. Nxd4 Rg8 18. Bxf6 Nxf6)
17. e5 $1 $16 {[%cal Re5f6]} Nd5 18. e6 $36 {[%mdl 2048] White has strong
initiative.} fxe6 19. Qxe6 N5f6 20. Bxf6 Nxf6 21. dxc5 Qd5 22. Qa6 Qxc5 {[#]}
23. O-O $1 {Rfc1 is the strong threat.} Qb6 (23... Rd8 24. Rfe1) 24. Qe2 Rxg3
25. a5 Qc5 {And now ...Rg4 would win.} 26. Rfc1 Rxg2+ 27. Kxg2 Qxh5 {[#]} 28.
Rc4 $1 Rd8 29. Rxb4 Nd5 30. Rh4 Qf5 31. Qe4 Qxe4 32. Rxe4 Bg7 33. Rh1 h6 34.
Nh4 (34. Rg4 $142 Kf7 35. Nd4 Bxd4 36. Rxd4) 34... Rd6 (34... Bc3 $16) 35. Nf5
$18 Rg6+ 36. Kf1 Bc3 37. Rh3 {aiming for Rd3.} e6 38. Ne3 {Hoping for Nxd5.}
Ne7 (38... Kd7 39. a6 Kd6) 39. Nc4 Nd5 40. Rd3 {Black must now prevent Rxd5.}
Kd7 {[#]} 41. Ne3 $1 Kd6 (41... Bg7 {is a better defense.} 42. Nxd5 exd5 43.
Rxd5+ Kc6) 42. f3 Rf6 (42... Bg7 $142 43. Ke2 Kc5) 43. Nf5+ $4 {[%mdl 8192]}
exf5 $2 (43... Rxf5 $19 44. a6 e5) 44. Rc4 $1 {[%cal Rc4c3] Weighted Error
Value: White=0.30/Black=0.51} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.37"]
[White "Volokitin, Andrei"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2652"]
[BlackElo "2543"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,105,0,0,0,0,0,0,0,0,20,16,27,27,25,22,27,16,16,16,16,16,16,16,16,16,
31,23,50,36,44,0,43,58,38,32,32,24,20,0,74,74,106,106,122,122,122,122,122,106,
106,75,120,114,122,121,121,114,122,106,106,79,120,106,106,106,116,0,106,77,114,
114,121,121,121,121,121,121,124,95,106,106,106,106,133,106,106,106,133,106,106,
106,106,106]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nc3 Nxc3
7. bxc3 Nxe5 8. dxe5 Bc5 {C43: Petroff Defence: 3 d4.} 9. O-O $1 {The main
line 9.0-0 scores better than 9.Qh5.} O-O 10. Qh5 {[%csl Gd3][%cal Rh5h7]} g6
$1 {[%cal Rg6h5] The position is equal.} 11. Qh6 Re8 12. Bg5 Bf8 13. Bxd8 Bxh6
14. Bxc7 Bf5 {[#]} 15. Bxf5 $146 ({Predecessor:} 15. Rab1 Bxd3 16. cxd3 Rac8
17. Bd6 b6 18. Rb5 Rxc3 19. Rxd5 Rd8 20. f4 Bf8 21. Kf2 {1/2-1/2 (66) Vachier
Lagrave,M (2751)-Dominguez Perez,L (2758) Chess24.com INT 2021}) 15... gxf5 16.
Rfd1 Rac8 17. Bd6 Rxc3 18. Rxd5 Rxc2 19. a4 Rec8 20. g3 Kg7 21. Ra3 Rd2 22.
Rad3 (22. Rc5 {looks sharper.} Rxc5 23. Bxc5 b6 24. Bd6 f4 25. Kg2) 22... Rxd3
23. Rxd3 $11 {[%mdl 4096] Endgame KRB-KRB} Bg5 24. a5 Rd8 25. a6 bxa6 26. Ra3 {
Threatens to win with f4.} Rd7 (26... Rc8 $11) 27. Rxa6 $16 Bd8 {[#]} 28. Bc5
$1 Rd5 29. Bxa7 Ra5 30. Rxa5 Bxa5 {KB-KB} 31. Bd4 Kg6 32. Kf1 Bb4 33. Ke2 Ba5
34. Ke3 h5 35. Bc5 Bc3 36. Kf4 Bd2+ 37. Be3 Bb4 38. Bd4 Bd2+ {[#]} 39. Kf3 $1
Bb4 40. Ke3 Ba5 $1 41. Kd3 Bb4 42. Kc4 Ba5 43. Be3 Bc7 44. Kd5 Ba5 45. Bd4 Be1
46. h3 Ba5 47. Kc4 Be1 48. Kd3 Ba5 49. Ke3 Bb4 50. Bb6 Bc3 51. Kf4 Bd2+ 52. Be3
Bc3 53. Bc5 {Weighted Error Value: White=0.09/Black=0.12} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.38"]
[White "Bjerre, Jonas Buhl"]
[Black "Demchenko, Anton"]
[Result "0-1"]
[ECO "C79"]
[WhiteElo "2569"]
[BlackElo "2651"]
[Annotator "TA"]
[PlyCount "148"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,148,32,39,31,50,41,42,45,51,33,29,36,31,20,26,20,33,24,33,20,39,13,1,
7,15,0,0,0,0,0,0,0,0,-60,-50,-85,0,-16,-15,-19,-6,-34,0,-25,-33,-27,-34,-43,
-39,-35,-22,-38,-39,-47,-54,-69,-69,-135,-52,-62,-61,-64,-56,-58,-29,-30,-28,
-60,0,0,0,-70,-57,-64,-54,-80,-36,-41,-41,-41,-45,-42,-31,-152,-158,-157,-141,
-141,-48,-91,-91,-139,-138,-122,-37,-49,-36,-50,-41,-88,-88,-88,-88,-170,-174,
-173,-172,-160,-177,-184,-168,-183,-182,-152,-180,-149,-143,-162,-173,-173,
-159,-170,-154,-154,-164,-150,-140,-12842,-12842,-12850,-27999,-27999,-27999,
-27999,-27999,-27999,-27998,-27999,-27998]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4.
Ba4 Nf6 5. O-O d6 6. Re1 Bg4 7. c3 {C79: Ruy Lopez: Steinitz-type lines with 3.
..a6 4 Ba4 Nf6 5 0-0 d6.} Nd7 8. h3 Bxf3 9. Qxf3 {[#] White is slightly better.
} g6 $146 ({Predecessor:} 9... Be7 10. d4 O-O 11. Be3 Bg5 12. d5 Ncb8 13. Nd2
Bxe3 14. Qxe3 Qh4 15. b4 a5 {1-0 (29) Unzicker,W-Ribeiro,J Munich 1954}) 10. d4
Bg7 11. dxe5 Ncxe5 12. Qg3 Bf6 13. Nd2 h5 14. Nf3 h4 15. Qf4 c6 16. Qe3 Nxf3+
17. Qxf3 Bg5 18. Qd1 (18. Be3 {feels hotter.} Ne5 19. Qe2 Bxe3 20. Qxe3 g5 21.
Rad1) 18... Bxc1 19. Rxc1 Qf6 20. b4 Ne5 21. c4 g5 22. b5 (22. Rc3 $11) 22...
axb5 $15 23. cxb5 O-O (23... c5 $1 $17) 24. bxc6 bxc6 25. Bb3 Rab8 26. Qd2 (26.
Re3 {keeps more tension.} Rb6 27. a4 Ra8 28. Rb1 Kg7 29. Ba2) 26... Qf4 27.
Qxf4 (27. Qc3 {looks sharper.} c5 28. a4 c4 29. Bc2 Rb7 30. Ra1) 27... gxf4 28.
Rc3 Kg7 29. g3 hxg3 30. fxg3 fxg3 31. Rf1 Rh8 32. Rxg3+ Kf8 33. Rd1 Ke7 34. Rd4
(34. Rd2 $15) 34... Ra8 ({Black should try} 34... Rh4 $17 35. Ra4 Kf6) 35. Rb4
Ra7 36. a4 Rh4 37. Bc2 $1 d5 38. Rgb3 dxe4 39. Bxe4 Kd6 (39... c5 $1 $15 40.
Rb7+ Rxb7 41. Rxb7+ Kf6) 40. Bc2 $1 $11 Rxa4 41. Rxh4 (41. Rxa4 $11 Rxa4 42.
Rd3+ {[%mdl 64] Discovered Attack} Nxd3 43. Bxa4) 41... Rxh4 {[%mdl 4096]
Endgame KRB-KRN} 42. Kg2 Rc4 43. Bf5 Ke7 44. Rb2 c5 45. Kg3 Kf6 46. Bb1 Rc1 47.
Kf4 (47. Rb6+ $15 Kg7 48. Rb7) 47... Nc4 $1 $17 {[%cal Rc4b2]} 48. Rb8 Rf1+ 49.
Kg3 Nd2 ({Black should play} 49... Nd6 $1 $17 {Hoping for ...c4.} 50. Kg2 Rf4)
50. Bc2 Rf3+ 51. Kg4 Rc3 52. Bh7 Rc4+ (52... Nc4 $17 53. Rb7 Ke6) 53. Kg3 $15
Nf1+ 54. Kf2 Rf4+ 55. Ke2 Ng3+ 56. Ke3 Rh4 57. Bc2 (57. Bd3 $17 {was necessary.
}) 57... Rxh3 $19 58. Rc8 Nf5+ {[%mdl 64] Discovered Attack (Double check)} 59.
Kd2 Nd4 {Threatens to win with ...Rh2+.} 60. Bd1 Rh2+ 61. Kd3 Rh1 62. Kd2 {[#]}
Ne6 $1 63. Bg4 {[#]} Ng5 $1 64. Rc6+ Ke7 65. Bf5 Rh5 {...Nf3+ is the strong
threat.} 66. Bg4 Rh4 67. Bf5 Rd4+ 68. Ke3 Rd5 69. Kf4 $2 {[%mdl 8192] Loses
the game.} (69. Bd3 $17) 69... Ne6+ 70. Bxe6 fxe6 71. Ke4 {Black mates.} Kd7
72. Ra6 Rd1 73. Rb6 Kc7 74. Ra6 Kb7 {Weighted Error Value: White=0.19/Black=0.
12} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.39"]
[White "Nguyen, Thai Dai Van"]
[Black "Donchenko, Alexander"]
[Result "0-1"]
[ECO "E91"]
[WhiteElo "2577"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,114,0,0,0,0,0,0,0,0,0,0,-27,0,0,0,-25,0,0,22,0,0,-7,24,0,0,-23,7,0,9,
-18,0,-38,-35,-45,-32,-56,0,0,0,-100,-44,-45,-38,-39,-39,-91,-84,-78,-81,-76,
-87,-297,-333,-362,-334,-300,-308,-309,-312,-310,-293,-280,-262,-313,-300,-310,
-304,-307,-254,-441,-431,-440,-439,-455,-455,-455,-432,-556,-556,-625,-618,
-647,-646,-742,-714,-923,-943,-858,-868,-868,-866,-976,-983,-948,-920,-897,
-854]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Na6 7. O-O e5
8. Be3 Qe7 9. dxe5 dxe5 10. h3 c6 11. Qc2 {E91: King's Indian: Classical: 6
Be2, unusual replies including 6...c5 and 6...Bg4.} Re8 $5 {[%mdl 4] [#]
Leaves trodden paths.} 12. Rfd1 $146 ({Predecessor:} 12. Rad1 Nh5 13. a3 Nc5
14. b4 {0-1 (76) Saric,A (2502)-Shimanov,A (2648) Chess.com INT 2016}) 12...
Nh5 13. a3 {The position is equal.} Nf4 14. Bf1 Qf6 15. Ne1 Ne6 16. Nf3 Nf4 17.
Ne1 Ne6 18. Nf3 h5 19. Qc1 Nac5 20. Qc2 Na6 21. Qc1 Nf4 22. Ne1 h4 23. Nd3 {
[%cal Rd3f4]} Bh6 24. c5 (24. b4 {is more complex.} Nc7 25. Nc5 b6 26. Nb3 Nce6
27. Kh1) 24... Nc7 25. Nxf4 exf4 26. Bd2 Ne6 27. b4 Nd4 ({Black should try} 
27... Bg7 $15) 28. Rb1 $1 $11 g5 29. f3 {[#]} (29. Ne2 $11 {remains equal.}
Nxe2+ 30. Bxe2) 29... Bg7 (29... Bxh3 $1 $17 30. gxh3 Nxf3+ 31. Kh1 Bg7) 30.
Na4 $15 Be6 $36 {[%mdl 2048] White is under pressure.} 31. Bc3 Rad8 32. Qb2 (
32. b5 $15 Rd7 33. bxc6 bxc6 34. Rb4) 32... Rd7 $17 33. Rd2 {[#]} Red8 $1 34.
Kh1 Qh6 35. Rbd1 $2 {[#] Now White is beyond hope.} (35. b5 $17) 35... Bb3 $1
$19 36. Qxb3 (36. Bxd4 Bxd1) 36... Nxb3 37. Rxd7 Rxd7 38. Rxd7 {Black must now
prevent Rd6.} Qe6 39. Rd8+ Kh7 {aiming for ...Bxc3.} 40. Rd6 Qe7 {And now ...
Bxc3 would win.} 41. Bc4 Bxc3 42. Nxc3 {[#]} Qe5 $1 43. Ne2 {[#]} Qb2 ({
Less strong is} 43... Qa1+ 44. Kh2 $17) 44. Ng1 $2 (44. e5) 44... Nd2 {Black
is clearly winning.} 45. Be2 Kg7 46. Rd7 b5 47. cxb6 axb6 {[%cal Ba7b6,Bb6b5]
[%mdl 32]} 48. Rd6 Nb3 49. Bc4 Nd4 50. Rd7 b5 51. Bxf7 Kf6 52. Be8 Nc2 53. Rd2
Qc1 54. Rd7 Ne3 55. Rf7+ Ke6 56. Rg7 g4 {( -> ...g3)} 57. Bd7+ Kf6 {Weighted
Error Value: White=0.32/Black=0.05} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.40"]
[White "Morovic Fernandez, Ivan"]
[Black "Abdusattorov, Nodirbek"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2510"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,119,48,48,53,8,33,33,38,13,22,0,0,0,0,-31,-40,-48,-35,-52,49,31,38,0,
0,-1,0,0,0,-27,-22,-72,-20,-27,0,-212,-237,-237,-217,-285,-284,-284,-264,-222,
-200,-206,-185,-227,-150,-157,-8,-8,-8,-8,-8,-8,0,-8,0,0,0,-8,-8,-8,-8,-8,0,-8,
0,0,0,0,0,-8,-8,-8,-8,-8,0,-32,-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-489]} 1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nc3
Nf6 8. Bg5 Be7 9. O-O-O h6 10. Bh4 O-O 11. Rhe1 Re8 {C62: Ruy Lopez: Steinitz
Defence.} 12. Kb1 Nd7 13. Bxe7 Qxe7 {White is slightly better.} 14. Nd5 Qd8 {
[#]} 15. Re3 $146 ({Predecessor:} 15. Nb4 Nb8 16. Qc4 Qc8 17. Nd4 Bxe4 18. Nb5
d5 19. Nxd5 Bxd5 20. Qxd5 Rxe1 21. Rxe1 {1/2-1/2 (27) Peters,J (2430)
-Littlewood,P (2345) London 1978}) 15... a5 {[%cal Ba7a5,Ba5a4,Ba4a3][%mdl 32]}
16. c4 a4 17. Nd2 Bxd5 18. cxd5 a3 19. b3 Nf6 (19... Qh4 $1 $15) 20. Rc1 Qd7
21. Rec3 Qg4 {[%cal Rf6e4]} 22. Rg3 ({Reject} 22. Rxc7 Nxe4 23. Nxe4 Rxe4 $17)
22... Qf4 23. Rxc7 Rac8 24. Rxc8 (24. Rxb7 Rxe4 25. Rc3 Rxd4 26. Rxc8+ Kh7 27.
Rbc7 Rxd2 28. Rc1 Qxf2 29. R8c2 Nxd5 30. h3 Nc3+ $1 {[%mdl 512]} 31. Ka1 Rxc2
32. Rxc2 Qg1+ 33. Rc1 Qxc1#) 24... Rxc8 25. b4 h5 (25... g6 $17 26. Rxa3 {[#]}
Nxe4 $1) 26. h3 h4 $40 {[%mdl 128] Black is up to no good.} 27. Rc3 (27. Rxa3
$11 Nxe4 28. Rd3) 27... Rxc3 $19 28. Qxc3 Qxf2 29. Qc8+ Kh7 30. Qf5+ Qxf5 31.
exf5 Nxd5 {[%mdl 4096] Endgame KN-KN} 32. Ne4 Nxb4 33. Nxd6 Nd5 34. Kc2 Ne3+ ({
Black should try} 34... Kh6 $17 35. Nxf7+ Kh5) 35. Kd3 $11 Nxg2 36. Ke4 Ne1 37.
Nxb7 Kh6 38. Nd6 f6 39. Kf4 Kh5 40. Ke4 Nc2 {...Nb4 is the strong threat.} 41.
Kf4 $1 Nd4 42. Ke3 Nc6 {Strongly threatening ...Nb4.} 43. Kf4 Ne5 44. Nb5 Nd3+
45. Ke3 Nb4 (45... Nb2 {seems wilder.} 46. Nxa3 Nd1+ 47. Kf3 Nc3 48. Nc2 Kg5)
46. Kf4 Nxa2 {White must now prevent ...Nc1.} 47. Nxa3 Nc3 {Hoping for ...Nd1.}
48. Nc2 $1 Nb5 (48... Nd1 {looks sharper.} 49. Kf3 Kg5 50. Nd4 Nc3 51. Ke3 Nb1)
49. Ne3 Nd4 50. Ke4 {The position is equal.} Ne2 {aiming for ...Ng1.} (50...
Nb3 {is more complex.} 51. Kf4 Nc1 52. Nd5 Ne2+ 53. Kf3 Ng3) 51. Kf3 Nc1 {
And now ...Kg5 would win.} (51... Ng3 $5 52. Kf4 $8 Kh6 $11) 52. Nc2 $1 Nb3 {
Threatens to win with ...Kg5.} 53. Kf4 Nc5 54. Nd4 Nd3+ 55. Ke3 Nb4 56. Ne6
Nd5+ 57. Ke4 Nc3+ 58. Kf3 Nb5 59. Kf4 g5+ 60. Ke4 $2 {[%mdl 40960] Weighted
Error Value: White=0.17/Black=0.16. An unexpected result.} (60. fxg6 $1 $11
Kxg6 61. Kg4) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.41"]
[White "Tari, Aryan"]
[Black "Gretarsson, Hjorvar Steinn"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2646"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,127,19,30,36,47,37,55,24,29,19,46,-17,107,101,102,102,81,61,68,50,91,
90,88,68,86,81,126,54,85,77,84,64,61,25,54,71,173,177,185,189,197,157,158,129,
279,120,162,124,125,113,165,165,148,141,168,122,152,144,214,205,217,197,214,
219,221,207,268,217,208,239,267,273,270,265,250,150,143,146,155,124,118,48,88,
79,92,94,86,53,58,72,53,58,59,48,235,251,1632,1903,1862,835,1389,1782,1456,709,
2545,2230,2553,2545,1710,1599,29969,29970,29974,29975,29974,29976,29976,29977]
} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O h6 7. a4 {[%cal
Ba2a4,Ba4a5][%mdl 32] B12: Caro-Kann: Advance Variation.} Ne7 8. a5 Rc8 9. Nbd2
{White is slightly better.} g5 10. Nb3 Bg7 11. Ne1 {[#]} ({White should try} 
11. c3 $14) 11... b6 $146 (11... c5 $11 {keeps the balance.}) ({Predecessor:} 
11... c5 12. Nxc5 Nxc5 13. dxc5 a6 14. Be3 Bxe5 15. c3 O-O 16. Bd4 Qc7 17. Nf3
Bg7 18. Bxg7 Kxg7 {1-0 (64) Akopian,V (2675)-Ghaem Maghami,E (2574) Doha 2016})
12. axb6 $16 axb6 13. f4 gxf4 14. Bxf4 (14. Rxf4 $6 c5 $11) 14... c5 15. Ba6
Rc7 16. Bb5 O-O 17. c3 cxd4 18. cxd4 Rc4 19. Rc1 (19. Qd2 $16) 19... Rb4 20.
Bd3 b5 21. Bd2 Rc4 22. Qh5 Bg6 23. Qh3 Kh7 (23... Bxd3 $16 24. Nxd3 Nf5) 24.
Bxg6+ $18 (24. Bxc4 bxc4 25. Nc5 Nxc5 $11) 24... Nxg6 25. Nf3 Qb6 {[%cal Rd7e5]
} 26. Kh1 Rxc1 27. Rxc1 f6 (27... b4 $16 {was necessary.} 28. Qh5 Qb5) 28. Ba5
(28. Nc5 $1 $18 {[%cal Rc5e6] and the rest is easy.} Nxc5 29. dxc5) 28... Qa6
$16 29. Rc7 Rf7 30. exf6 $1 Bxf6 (30... Nf4 $16 31. Qg4 b4) 31. Bd2 $18 Kg8 32.
Qxh6 Ngf8 33. Qe3 Qa2 34. Bc1 Nb6 (34... Bg7 $16 {keeps fighting.} 35. h4 Ne5
36. Rxf7 (36. Nxe5 Rxc7 37. Nc5 Qb1 $17) 36... Nxf7) 35. Rxf7 Kxf7 36. Qd3 Nc4
37. h4 Nd6 38. Kh2 Qa4 39. Bf4 Qc4 {[#]} 40. Qd1 Ne4 41. Ne5+ Bxe5 42. Bxe5 ({
Less strong is} 42. dxe5 Ng6 $14) 42... Ke7 43. h5 Nd7 44. Qf3 Qc2 45. h6 {
And now Qg4 would win.} Nef6 {[#]} 46. Kh3 (46. Qf4 $1 $16) 46... Qg6 47. Bf4
Ne4 48. Kh2 Ndf6 49. Na5 {Hoping for Nc6+.} Ng5 50. Nc6+ Ke8 51. Qe2 $36 {
[%mdl 2048] White is more active.} Qxh6+ 52. Kg1 Nfe4 $2 (52... Nh3+ $14 53.
gxh3 Qxf4) 53. Qxb5 Qg7 $2 ({Wrong is} 53... Nh3+ $2 54. gxh3 Qg7+ 55. Kh2 $18)
(53... Qh5 54. Ne5+ Kf8) 54. Qb8+ Kf7 55. Qc7+ (55. Qb7+ $142 Kg6 56. Qxg7+
Kxg7 57. b4) 55... Kg6 56. Qxg7+ Kxg7 {[%mdl 4096] Endgame KBN-KNN} 57. b4 {
[%cal Bb2b4,Bb4b5,Bb5b6][%mdl 32]} Nf7 58. b5 Ned6 59. Bxd6 Nxd6 60. b6 Kf6 61.
Nd8 {White mates.} e5 62. dxe5+ Kxe5 63. b7 Nxb7 64. Nxb7 {Weighted Error
Value: White=0.18/Black=0.38} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.42"]
[White "Deac, Bogdan-Daniel"]
[Black "Miezis, Normunds"]
[Result "1/2-1/2"]
[ECO "A33"]
[WhiteElo "2643"]
[BlackElo "2467"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,77,38,52,33,46,45,43,30,39,44,47,46,43,37,41,57,57,38,52,64,16,17,17,
17,14,26,0,26,33,43,44,52,44,47,53,43,46,47,43,44,51,58,58,58,65,79,79,139,38,
68,83,70,0,0,-8,0,0,0,0,0,0]} 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3
e6 6. g3 Bc5 7. Nb3 Bb4 8. Bg2 d5 9. cxd5 Nxd5 10. O-O {[%cal Rc3d5]} Nxc3 {
A33: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6 5 Nc3 Nc6.} 11. Qxd8+
Nxd8 12. bxc3 Bxc3 {White is slightly better.} 13. Rb1 a5 14. Nc5 {[%mdl 1024]
White has compensation.} e5 15. Na4 Bb4 16. a3 Be7 17. Nb6 Rb8 18. Rb5 {[#]} f6
$146 ({Predecessor:} 18... Bg4 19. f3 Be6 20. f4 Nc6 21. f5 Bc8 22. Be3 O-O 23.
a4 h5 24. Be4 Rd8 {1-0 (72) Trzcinski,I (2339)-Brzoza,M (2331) ICCF email 2018}
) 19. Rd1 Bg4 20. f3 Be6 21. f4 Nc6 22. Bb2 {[%cal Rf4e5]} Kf7 23. fxe5 Nxe5
24. Bxe5 fxe5 25. Rxe5 Rhd8 26. Rf1+ Bf6 27. Rxa5 Ke7 {[#] Threatens to win
with ...Bd4+.} 28. Rb5 Rd2 29. Bf3 Ra2 30. a4 Rd8 31. Rc1 Kf8 32. Kg2 Rdd2 ({
Black should play} 32... Re8) 33. h4 (33. Rc7 $16) 33... Bd4 34. Nd5 {Hoping
for Nf4.} Rxa4 35. Rxb7 (35. Nf4 $14 Bd7 36. Rxb7) 35... Rxe2+ $1 $11 {The
position is equal.} 36. Kh1 {[#] Black must now prevent Rb8+.} Bxd5 37. Bxd5
Ra1 38. Rxa1 Bxa1 39. Rf7+ {Weighted Error Value: White=0.11/Black=0.06}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.43"]
[White "Kuybokarov, Temur"]
[Black "Paravyan, David"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2549"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,115,7,0,18,8,15,6,13,14,24,4,20,14,17,10,25,19,13,22,24,12,18,0,0,0,
0,0,0,0,0,0,26,36,25,42,68,72,60,60,70,72,66,61,106,105,98,97,96,106,99,97,120,
97,93,92,175,168,214,207,183,136,220,202,199,197,267,233,245,250,344,347,339,
339,315,345,469,473,441,435,434,431,457,456,656,646,650,651,638,633,1196,725,
623,325,620,588,576,568,1047,867,952,932,5960,4794,29970,29971,29970,12663]} 1.
e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 cxd4 {C11: French:
Classical System: 4 e5 and 4 Bg5 dxe4.} 7. Nxd4 Bc5 8. Be3 O-O {The position
is equal.} 9. Qd2 a6 10. a3 Nc6 11. Qf2 {[#]} g5 $146 (11... Qc7 {seems wilder.
} 12. Nxc6 Qxc6 13. Bd3 b6 14. O-O Bxe3 15. Qxe3 Qc5) ({Predecessor:} 11... Qb6
12. O-O-O Nxd4 13. Bxd4 Bxd4 14. Qxd4 Qxd4 15. Rxd4 Nb8 16. g3 Nc6 17. Rd1 g5 {
1-0 (50) Muzychuk,A (2555)-Mkrtchian,L (2390) Astana 2019}) 12. g3 Bxd4 13.
Bxd4 Nxd4 14. Qxd4 gxf4 $1 15. gxf4 Qh4+ 16. Qf2 Qxf2+ 17. Kxf2 f6 18. Rg1+ Kh8
19. exf6 Nxf6 20. Ke3 Bd7 21. Bd3 Rf7 22. Rg5 Raf8 23. Rag1 Ne8 24. Ne2 Nd6 25.
Re5 Rf6 26. Rh5 {[%csl Gd3][%cal Rh5h7] [#]} R6f7 27. Nd4 Nc4+ 28. Bxc4 dxc4
29. Nf3 Be8 ({Wrong is} 29... Rxf4 $2 30. Ng5 $18) 30. Rh4 Rc7 31. Ne5 Rg7 32.
Rg3 b5 (32... Rfg8 $16) 33. Rh6 $18 Re7 34. c3 Rf5 35. Rg4 a5 (35... Rh5 $16
36. Rxh5 Bxh5) 36. Kd4 Rf8 37. Kc5 Rc7+ (37... a4 $142 38. h3 Rc7+ 39. Kd6 Rb7
40. Kxe6 (40. Rxe6 Bf7 $18) 40... Bf7+ 41. Kd6 Be8) 38. Kd6 Rg7 {Now ...Rxg4
and Black clings on.} 39. Rxe6 Rxg4 40. Nxg4 {[%mdl 4096] Endgame KRB-KRN} Bg6
{With the idea ...Bf5.} 41. Nf6 Kg7 42. Ke5 b4 43. Re7+ Bf7 44. f5 Rb8 {
[#] White must now prevent ...Rb5+.} 45. Nxh7 $1 {[%mdl 512]} Rb5+ (45... Kxh7
46. Rxf7+) 46. Kf4 {Threatens to win with Ng5.} bxc3 (46... Kxh7 $142 47. Rxf7+
Kh6 48. axb4 axb4) 47. bxc3 Kxh7 48. Rxf7+ {KR-KR} Kh6 49. Rf6+ Kh5 50. Rf8 {
[%cal Rf8h8]} Kh6 51. Rh8+ Kg7 52. Rc8 Rb2 53. Rxc4 Rxh2 {aiming for ...Rh4+.}
54. Ke5 Re2+ 55. Re4 Rc2 56. c4 a4 57. Kd6 Rc3 58. Ke7 {Weighted Error Value:
White=0.05/Black=0.21} (58. c5 $142 Rxa3 59. c6 Rc3 60. Rxa4 Rd3+ 61. Kc5 Rf3
62. c7 Rxf5+ 63. Kb6) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.44"]
[White "Sasikiran, Krishnan"]
[Black "Vokhidov, Shamsiddin"]
[Result "1-0"]
[ECO "C82"]
[WhiteElo "2640"]
[BlackElo "2521"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,117,0,8,0,0,0,0,14,13,0,0,0,0,0,11,0,54,64,64,24,38,19,80,53,39,33,
35,0,0,0,0,0,52,19,23,17,54,52,108,70,79,84,89,107,176,160,295,313,294,302,281,
209,209,209,209,209,209,209,208,161,179,176,203,203,203,201,268,244,254,253,
239,208,216,208,240,234,227,206,206,195,205,198,12838,12839,12842,12843,12845,
12845,12845,12846,12846,12847,12848,12848,12850,27999]} 1. e4 e5 2. Nf3 Nc6 3.
Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2
{[%cal Bb1d2,Bd2f1,Bf1e3][%mdl 32]} O-O 11. Bc2 Nxf2 12. Rxf2 f6 13. Nf1 {
C82: Open Ruy Lopez: 9 c3 without 9...Be7.} Bxf2+ 14. Kxf2 fxe5 15. Kg1 {
The position is equal.} Bg4 {...e4 is the strong threat.} 16. Ne3 Be6 {[#]} 17.
Nf1 $1 $146 {[%mdl 8] A relevant novelty.} ({Predecessor:} 17. b3 Kh8 18. Ba3
Rf4 19. Bc5 d4 20. cxd4 exd4 21. Qd3 Bg8 22. Nf5 Qd5 23. Ba3 Re8 24. Rd1 Rfe4
25. Ng3 {1-0 (51) Carlsen,M (2855)-Mamedyarov,S (2762) chess24.com INT 2021})
17... Bg4 18. Ne3 Be6 {18...Be6 is the modern continuation.} 19. b4 d4 {[#]} (
19... a5 $11) 20. Qd3 $1 $14 g6 21. cxd4 {And now Bb3 would win.} (21. Qe4 $5 {
[%cal Re4c6]} dxe3 22. Qxc6 $14) 21... Nxb4 22. Qc3 (22. Qa3 $5 {[%cal Ra3b4]}
Nxc2 23. Nxc2 $11) 22... Rxf3 23. Qxb4 $16 Rf4 24. Bb3 Qd7 25. Nc2 Rf7 26. Bh6
Bxb3 27. axb3 Rd8 (27... exd4 $11 28. Nxd4 Qg4) 28. d5 Qxd5 29. h3 Qd3 30. Ne3
{[%mdl 1024] Hoping for Rd1. White has compensation.} Qd6 {White stays focused
until the end.} ({Black should play} 30... g5 $14 31. Bxg5 Rd4) 31. Qh4 {
Threatens to win with Rd1.} Qd4 32. Qe1 {aiming for Rd1.} Rd6 33. Kh2 Qe4 (
33... g5 $16 34. Bxg5 h6) 34. Qg3 $1 $18 Rd3 (34... Re6 $16) 35. Rxa6 {Black
must now prevent Qg4.} Rf4 {[#]} ({Worse is} 35... Rxb3 36. Qh4 $3 {[%mdl 512]}
Qf4+ 37. Bxf4 exf4 38. Ng4 Rg3 39. Ra8+ Rf8 40. Qf6 $1 {[%mdl 512]} Rxg2+ 41.
Kxg2 f3+ 42. Kxf3 h5 43. Rxf8+ Kh7 44. Rh8#) 36. Qg5 $1 {[%cal Rg5e7]} Qxe3 37.
Re6 Qxh3+ 38. gxh3 {Intending Re8+ and mate.} Rd2+ {[#]} 39. Qg2 $3 {[%cal
Rg2d2]} Rxg2+ 40. Kxg2 {[%mdl 4096] Endgame KRB-KR} Kf7 41. Rc6 Rb4 42. Rxc7+
Kf6 43. Rc3 Kf5 44. Rf3+ Ke4 45. Kf2 Rd4 46. Ke2 Rd7 47. Re3+ Kf5 48. Rg3 Rd4
49. Rf3+ Ke4 50. Rc3 Kf5 51. Rg3 Re4+ 52. Be3 h6 $2 {[#]} (52... Rb4) 53. Rg4
$1 {White is clearly winning.} Rxg4 54. hxg4+ Kxg4 55. Bxh6 {KB-K3P} g5 56. Ke3
Kf5 57. Bf8 e4 58. Bh6 Kg6 {[#]} 59. Bxg5 $1 {[%mdl 512] Weighted Error Value:
White=0.10/Black=0.19} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.45"]
[White "Matlakov, Maxim"]
[Black "Martirosyan, Haik M."]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2682"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,78,16,24,12,11,7,27,0,0,0,0,0,0,0,6,5,5,5,5,5,5,5,25,7,16,9,16,15,23,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-3,-3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 {
D37: Queen's Gambit Declined: 5 Bf4.} c6 8. b4 b6 9. h4 {White has an edge.} a5
10. a3 Ne4 11. Nxe4 dxe4 12. Ne5 {[%cal Re5c6]} Nxe5 13. Bxe5 {[#]} f6 $146 ({
Predecessor:} 13... Qd5 14. Be2 Ba6 15. O-O Bxe2 16. Qxe2 axb4 17. axb4 bxc5
18. bxc5 Bxc5 19. Bxg7 Kxg7 20. dxc5 {1-0 (47) Caruana,F (2835)-Nakamura,H 
(2736) chess24.com INT 2020}) 14. Bg3 Qd5 {Threatening ...axb4.} 15. Be2 Ba6
16. O-O axb4 17. axb4 Bxe2 18. Qxe2 b5 19. Qb2 Kf7 20. Ra3 Ra4 {The position
is equal.} 21. Rxa4 bxa4 22. Ra1 Ra8 23. Qc2 a3 24. Bc7 f5 25. g3 h5 26. Qe2 g6
27. Ba5 Qb3 28. Qd2 g5 29. hxg5 Bxg5 30. Qa2 Qd3 31. Qb1 Qxb1+ 32. Rxb1 $11 {
[%mdl 4096] Endgame KRB-KRB} Be7 33. Ra1 e5 34. dxe5 Bxc5 35. Rxa3 Be7 36. Rc3
c5 37. Bb6 $1 cxb4 38. Rc7 {[#] And now Bc5 would win.} b3 {Threatens to win
with ...b2.} 39. Bd4 Rb8 {An uneventful encounter.  Weighted Error Value:
White=0.02/Black=0.01} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.46"]
[White "Onyshchuk, Volodymyr"]
[Black "Gelfand, Boris"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2622"]
[BlackElo "2680"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,133,12,31,27,27,22,33,24,39,38,39,37,37,22,29,15,17,27,34,38,43,24,
55,37,68,63,71,55,51,61,57,16,32,0,0,0,0,0,0,0,129,110,363,363,399,383,360,0,0,
0,0,0,0,0,71,44,39,41,41,44,51,56,60,60,61,35,35,35,41,41,48,35,35,35,35,35,35,
34,34,34,35,35,42,41,42,41,41,34,34,34,41,41,41,34,42,34,162,20,20,20,20,14,42,
20,34,34,34,34,52,8,3,3,8,8,8,8,8,8,8,8,8,8,8,8]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6
4. Bxc6 bxc6 5. b3 f6 6. O-O Nh6 7. d4 {B30: Sicilian: 2...Nc6 3 Bb5, lines
without ...g6.} Nf7 8. c4 cxd4 9. Nxd4 {[#] White is slightly better.} c5 $146
({Predecessor:} 9... Be7 10. Nc3 O-O 11. Bb2 Bb7 12. Nde2 Qc7 13. Ng3 Rad8 14.
Qe2 Rfe8 15. Rad1 Qa5 16. Na4 d5 17. Bc3 Qc7 18. cxd5 cxd5 19. Bd4 Bc8 {
1/2-1/2 (19) Potkin,V (2555)-Tirard,H (2435) Sautron 2005}) 10. Ne2 Bb7 11.
Nbc3 Be7 12. f4 O-O 13. f5 Bd6 14. Bf4 Be5 15. Bxe5 Nxe5 16. Qd6 Rc8 17. Rad1
Rc6 18. Qd2 Qe7 19. Nf4 Rb6 20. Qe3 Bc6 21. Rd2 a5 22. Rfd1 {aiming for fxe6.}
a4 $1 23. fxe6 dxe6 24. Rd6 axb3 25. Qxc5 bxa2 {[#]} (25... Rfb8 $11 {keeps
the balance.} 26. Nxe6 bxa2 27. Rd8+ {[%mdl 64] Discovered Attack} (27. Nxa2
Rb1 $17) 27... Kf7 28. Ng5+ fxg5 29. Rf1+ Qf6) 26. Rxc6 $1 $16 {[%mdl 512]} Qa7
{[%mdl 8192]} (26... Qxc5+ $16 27. Rxc5 Ra6) 27. Rxb6 $18 a1=Q 28. Rxa1 Qxa1+ {
[#]} 29. Nb1 $2 (29. Rb1 $1 $18 {[%cal Rb1a1]} Qxc3 30. Nxe6) 29... Nd7 $11 30.
Qd6 {[%mdl 64] Double Attack} Nxb6 31. Qxe6+ Kh8 $1 32. Qxb6 Qa2 (32... Qe5 $1
$11 33. Qf2 Qa1) 33. Qb4 {[%cal Rb4f8]} Qa7+ $1 34. Kf1 $1 {[%cal Rb4f8]} Rb8
35. Qe1 Qa2 36. Nc3 {[%cal Rc3a2]} ({But not} 36. Nd2 Rb2 $11) 36... Qxc4+ 37.
Nfe2 Qd3 38. h3 f5 39. exf5 Qxf5+ 40. Kg1 Re8 41. Qg3 (41. Qa1 {is more
complex.} Qc5+ 42. Kh1 Qe5 43. Qa3 h6 44. Ng1) 41... Qe5 42. Qxe5 Rxe5 43. Kf2
g6 44. Nd4 Kg7 45. Kf3 Ra5 46. Ne4 Ra4 47. Ne6+ Kf7 {Black wants to play ...
Ra3+.} 48. N6g5+ Kg7 49. Kf4 Ra2 50. g3 Ra5 51. Ne6+ Kf7 {White must now
prevent ...Rf5+.} 52. Nd4 (52. Nd8+ {with more complications.} Kg7 53. h4 h6
54. Ne6+ Kf7 55. N6c5) 52... Rd5 53. Ng5+ (53. Nc6 {keeps more tension.} h6 54.
Ne5+ Kg7 55. h4 Ra5 56. g4) 53... Kf6 (53... Kg7 $14 54. Ngf3 Kf6) 54. Ngf3 ({
White has to play} 54. Nxh7+ $18 Ke7 55. Ne2) 54... g5+ 55. Ke4 Ra5 56. Nc2 h5
57. Ne3 g4 58. hxg4 {Hoping for Nd5+.} Ra4+ 59. Nd4 hxg4 60. Nxg4+ Kg5 {
The position is equal.} 61. Ne3 Ra8 62. Nf3+ Kf6 63. Nd5+ Kg6 64. Ke5 Ra3 65.
Nf4+ Kh6 66. Ke4 Ra8 67. g4 {Weighted Error Value: White=0.20/Black=0.24}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.47"]
[White "Mamedov, Rauf"]
[Black "Antipov, Mikhail Al."]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2673"]
[BlackElo "2619"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,93,25,15,0,16,0,0,0,0,0,0,-19,-2,-22,-13,-14,-13,-17,-14,-15,33,39,14,
7,36,11,0,31,56,56,142,142,143,143,143,145,146,144,137,137,150,143,150,141,316,
275,256,228,360,371,383,356,371,370,360,362,345,334,341,328,622,626,520,575,
450,275,275,272,275,275,275,275,272,182,191,0,272,270,259,248,297,288,410,400,
371,329]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Bf1 {
C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} Be7 7. Nc3 f6 8. d4 {[%cal Rd4e5]
The position is equal.} Nf7 9. Nd5 d6 10. Bc4 {[#]} Qd7 $146 ({Predecessor:} 
10... O-O 11. c3 Kh8 12. b4 Be6 13. Qb3 Qb8 14. Qc2 a6 15. Bb3 Qc8 16. h3 Bd8 {
1/2-1/2 (45) Baranowski,T (2379)-Chen,F (2319) ICCF email 2018}) 11. b4 Bd8 12.
b5 Na5 13. Bd3 O-O 14. c4 Re8 15. Qc2 f5 {Threatens to win with ...e4.} 16.
dxe5 dxe5 {Hoping for ...e4.} 17. Bb2 $1 c6 18. Nf4 {[%cal Rf3e5]} cxb5 {[#]} (
{Wrong is} 18... exf4 $2 19. Bxf5 $1 {[%mdl 512]} Nd6 20. Bxd7 $18) 19. Rad1 $1
Qc6 (19... exf4 20. Bxf5 $1 {[%mdl 512]} Rxe1+ 21. Rxe1 $18) (19... bxc4 $6 20.
Bxc4 Nxc4 21. Rxd7 $18) (19... Qc7 $1 $14) (19... Qc7 20. Nd5) 20. Nxe5 $16
Nxe5 21. Rxe5 Rxe5 22. Bxe5 Bg5 {[%cal Ra5c4]} 23. Bxf5 ({Don't play} 23. cxb5
$6 Qxc2 24. Bxc2 Kf7 $14) 23... Bxf5 24. Qxf5 Bxf4 {[#]} 25. cxb5 $1 Qc4 {
And now ...Rf8 would win.} 26. Qxf4 Qe2 $2 (26... Qxf4 $16 27. Bxf4 a6) 27. Rc1
Rd8 {( -> ...Rd1+)} 28. h3 $40 {[%mdl 128] White has strong attack.} Rd1+ (
28... Qd2 {was called for.} 29. Qxd2 Rxd2) 29. Rxd1 $18 Qxd1+ 30. Kh2 Qd7 31.
Bc3 b6 32. Qb8+ Kf7 33. a4 h6 34. f4 Nc4 $2 (34... Kg6 35. Qg8 Qe7) 35. Qh8 Kg6
36. g4 Qc7 37. Qe8+ Kh7 38. Qe4+ Kg8 39. Kg3 Nd6 40. Qd5+ Nf7 41. Qa8+ Nd8 42.
Qd5+ (42. Bd4 $142) 42... Nf7 $1 43. Qc6 Qe7 44. Kf3 Qd8 45. Qg6 {[%csl Gc3]
[%cal Rg6g7]} Qf8 (45... Qa8+ $142 46. Kg3 Qf8) 46. h4 Nd8 47. f5 {Weighted
Error Value: White=0.14/Black=0.26} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.48"]
[White "Zvjaginsev, Vadim"]
[Black "Jumabayev, Rinat"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2609"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,125,-5,18,17,4,26,41,33,37,10,39,32,36,35,35,34,109,66,147,145,147,
139,146,145,146,154,146,141,137,139,140,136,138,136,135,111,111,111,117,115,
115,117,118,78,81,0,118,117,117,103,118,118,118,111,111,88,92,97,98,99,109,96,
92,0,113,104,126,106,164,183,178,165,173,123,134,131,131,130,127,121,261,156,
150,156,147,142,358,302,411,396,389,389,339,305,193,185,5101,5298,2879,1684,
29971,29972,29974,29974,29980,29981,29973,4943]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6
4. a3 g6 5. g3 d5 6. cxd5 Nxd5 7. Bg2 Nde7 8. O-O Bg7 9. d3 O-O 10. Rb1 a5 11.
b4 {A29: English Opening: Four Knights Variation with 4 g3.} axb4 12. axb4 {[#]
} b6 $146 ({Predecessor:} 12... Nd4 13. Nd2 c6 14. e3 Ne6 15. Qc2 Nd5 16. b5
Nxc3 17. Qxc3 e4 18. d4 c5 19. Nxe4 cxd4 {1-0 (49) Almasi,Z (2692)-Bartel,M 
(2641) Budapest 2014}) 13. b5 {White is slightly better.} Na5 14. Bb2 Bb7 15.
Ne4 f6 16. Qc2 Nf5 17. Nfd2 c5 ({Black should play} 17... Nd4 $14 18. Bxd4 exd4
) 18. e3 Nd6 (18... Nh6 $14) 19. Bc3 $16 Bxe4 20. Nxe4 Nxe4 21. Bxe4 Ra7 22.
Ra1 {Black must now prevent Bxa5.} f5 23. Bg2 Qd6 24. Rfb1 Rb8 25. Bxa5 bxa5
26. Ra4 Kh8 27. Bc6 Bf6 28. Rc1 Bd8 29. Qxc5 Qxc5 30. Rxc5 Re7 31. Bd5 Rc7 32.
Bc6 Re7 33. Kf1 Bb6 34. Rcc4 Rd8 35. Ke2 Kg7 36. h4 Kf6 37. e4 Rc7 38. f4 fxe4
39. dxe4 h6 40. Bd5 Rdc8 41. Bc6 Rd8 $1 42. Ra1 Rd6 43. Rf1 Rd4 (43... h5 $16 {
was worth a try.} 44. Ra1 Rd8) 44. Rxd4 $18 Bxd4 45. fxe5+ Kxe5 {[%mdl 4096]
Endgame KRB-KRB} 46. h5 Rg7 47. Kd3 {[#] aiming for hxg6.} Bb6 48. Kc4 gxh5 49.
Rf5+ Ke6 (49... Kd6 $16 50. Rf6+ (50. Rxh5 Rg6 $16) 50... Ke7 51. Rxh6 Be3 52.
Rxh5 Rxg3) 50. Rxh5 (50. Bd5+ $18 Kd7 51. Rf6 (51. Rxh5 Rg6 $16)) 50... Be3 $16
51. Bd5+ Kd7 52. Rf5 Rxg3 $2 {Black cannot hold the game after this.} (52...
Rg6 $16 {was necessary.} 53. Rf7+ Kd8) 53. Rf6 a4 54. b6 {[%cal Bb5b6,Bb6b7]
[%mdl 32]} a3 55. b7 {Intending Rf7+ and mate.} Ba7 56. e5 {Strongly
threatening Rf7+.} ({Don't do} 56. Rxh6 Bb8) 56... Rg4+ 57. Kb3 {And now Be6+
would win.} Rg5 $2 {[#]} (57... Rg3+ 58. Kb4 Rg5) 58. Rf7+ $1 $18 Ke8 59. Rh7
Rxe5 60. Bc6+ {White mates.} Kf8 61. Rh8+ Kf7 62. Ra8 Re3+ 63. Kc2 {Weighted
Error Value: White=0.11/Black=0.23} (63. Kc4 $142 Re7 64. Rxa7 Rxb7 65. Bxb7 h5
66. Be4+ Ke6 67. Kd4 a2 68. Rxa2) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.49"]
[White "Sarana, Alexey"]
[Black "Ivic, Velimir"]
[Result "1-0"]
[ECO "D19"]
[WhiteElo "2649"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,81,37,42,45,29,34,40,17,17,0,0,0,0,0,7,8,28,31,62,76,83,47,41,16,50,
36,29,35,60,66,81,75,104,84,84,84,83,66,67,48,63,46,92,92,90,93,114,125,134,
114,261,282,282,272,653,653,654,647,602,600]} 1. d4 {Huebner,R} d5 2. Nf3 Nf6
3. c4 c6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O O-O 9. Qe2 Bg6 10.
Ne5 Nbd7 11. Nxg6 hxg6 12. Rd1 Qe7 {12...Qc7 is the modern continuation.} 13.
e4 {D19: Slav Defence: 5 a4 Bf5 6 e3: Main line with 9 Qe2.} e5 14. d5 Nb6 15.
dxc6 {[#] White is slightly better.} Nxc4 $146 ({Predecessor:} 15... bxc6 16.
Ba6 Rab8 17. Bg5 Nbd7 18. Bc4 Bc5 19. Kh1 Rfe8 20. Rd2 Bd4 21. Nd1 Qb4 {
1-0 (47) Ubilava,E (2540)-Georgiev,V (2540) Elgoibar 1998 CBM 069 [Huebner,R]})
16. Qxc4 {Nd5 is the strong threat.} bxc6 17. f3 Bc5+ 18. Kh1 Rab8 19. Ne2 {
[%cal Bc3e2,Be2c1,Bc1d3][%mdl 32]} a5 20. Bd2 Qa7 21. Bc3 Rfe8 22. b3 Bb4 23.
Bb2 (23. Qxc6 $2 Rec8 $19) 23... Bf8 24. Nc1 (24. Qxc6 $2 Rec8 $19) 24... Nd7
25. Bc3 Nc5 26. Nd3 Nd7 {With the idea ...Nb6.} 27. Be1 Re6 28. b4 axb4 29.
Nxb4 Nb6 30. Qc2 (30. Qa2 {is more complex.} Qa5 31. Nd3 Qa6 32. a5 Nc4 33. Bf2
) 30... c5 31. Nd5 Nxd5 32. exd5 Rd6 33. a5 Rbd8 34. Qc4 Qa8 {[%cal Rd6d5]} 35.
a6 ({Of course not} 35. Qxc5 $6 Rxd5 36. Qc2 Rxd1 $11) 35... R8d7 36. Ra5 {
[%cal Ba1a5,Ba5c5,Bc5c8][%mdl 32]} ({Weaker is} 36. Qxc5 Rxa6 37. Qc1 Rxd5 $17)
36... Ra7 {Loses the game.} (36... Be7 $16) 37. Rxc5 $18 {Threatens to win
with Rc8.} ({Not} 37. Qxc5 $2 Rdxa6 38. Qe3 Rxa5 $19) 37... Rdxa6 {aiming for .
..Ra1.} 38. Rc8 Qb7 $2 {[#]} (38... Ra1 39. Rxa8 Rxd1 40. Rxf8+ Kxf8 41. Qc8+
Ke7) 39. Qc5 $1 {[%cal Rc5f8] White is clearly winning.} Qe7 40. Qxe7 Rxe7 41.
Bb4 {Weighted Error Value: White=0.05/Black=0.31} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.50"]
[White "Chigaev, Maksim"]
[Black "Georgiev, Kiril"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2639"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,121,16,16,13,23,13,18,12,18,7,20,16,10,10,18,17,22,14,19,-4,-8,-22,
-21,-29,-14,-33,-12,-5,-12,-20,-14,-8,18,28,43,17,21,37,33,31,30,54,66,45,42,0,
0,0,0,0,16,12,167,1,1,1,6,0,5,0,0,0,0,0,0,0,43,31,35,36,30,43,62,37,66,51,66,
66,67,67,66,36,67,65,43,60,245,242,223,242,450,471,472,462,678,668,678,661,
29980,29981,29981,29982,29982,29983,29984,29985,29985,29986,29986,29987,29988,
29989,29989,29990]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6.
O-O {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5.}
Nd7 7. c3 $1 {[%mdl 4] is recently more successful than 7.Nbd2.} Bd6 8. d4 {
The position is equal.} O-O 9. Bg5 Qe8 10. Re1 f6 11. Bh4 Nb6 12. Nbd2 Bg4 {[#]
} 13. h3 $146 ({Predecessor:} 13. Qc2 Kh8 14. Bg3 Nd7 15. Nh4 Qf7 16. Qd3 Be6
17. Nf5 Rad8 18. Nxd6 cxd6 19. c4 {1/2-1/2 (31) Balogh,C (2638)-Parligras,M 
(2603) Achaia 2017}) 13... Bh5 14. g4 Bf7 15. dxe5 fxe5 16. b3 a5 17. Qe2 Kh8
18. Kg2 a4 19. Bg3 Bg8 20. Nh4 Nd7 21. Nf5 Qe6 22. Nc4 Bc5 23. Rad1 b5 24. Nd2
axb3 25. axb3 {[%cal Ba2b3,Bb3b4][%mdl 32]} Ra2 26. b4 Bd6 27. Ra1 Rfa8 28.
Rxa2 Rxa2 29. Qe3 c5 30. Nf3 Ra3 $2 {[#]} (30... cxb4 $11 {and Black stays
safe.} 31. cxb4 Bxb4) 31. Qg5 $2 (31. bxc5 $1 $18 Bxc5 32. Qg5 (32. Bxe5 Qxe5
33. Nxe5 Bxe3 $14)) 31... Qf6 $11 32. Qxf6 gxf6 33. Rd1 Ra6 34. g5 Bb3 35. Rd2
$36 {[%mdl 2048] White has some pressure.} cxb4 36. cxb4 Kg8 37. gxf6 Kf7 38.
Nh6+ Kxf6 39. Ng4+ Ke6 {[#]} 40. Ngxe5 $1 {[%mdl 64] Remove Defender} Bxe5 41.
Bxe5 Nxe5 42. Nd4+ {[%mdl 64] Double Attack} Kf6 {aiming for ...Bc4.} 43. Nxb3
$14 {[%mdl 4096] Endgame KRN-KRN} Ra4 44. f4 Ng6 45. Nc5 Rxb4 46. Kf3 Rc4 47.
Nd7+ Kg7 $2 (47... Ke7 $14) 48. f5 $18 Rc3+ 49. Kg4 h5+ $2 (49... b4 50. fxg6
Kxg6) 50. Kxh5 Rxh3+ 51. Kg4 Rh4+ (51... Rh1 $142 52. fxg6 Kxg6) 52. Kg5 Rxe4
53. Nf6 {Hoping for Nh5+.} ({Weaker is} 53. fxg6 Re6 $16) 53... Ne5 {White
must now prevent ...Nf3+.} 54. Nxe4 {White mates.} Nf3+ 55. Kf4 Nxd2 56. Nxd2 {
KN-KPP} c5 57. Ne4 c4 58. f6+ Kf8 59. Kf5 b4 60. Ke6 c3 61. Nc5 {Weighted
Error Value: White=0.09/Black=0.30} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.51"]
[White "Abasov, Nijat"]
[Black "Meshkovs, Nikita"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2638"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,63,35,24,24,23,33,30,31,22,37,29,32,32,32,31,39,3,13,0,61,69,68,63,
68,69,62,63,93,83,125,96,170,167,164,164,164,164,340,340,327,327,330,315,420,
367,501,495,475,511,542,470]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3
Qc7 6. Be3 a6 7. a3 b5 8. Nxc6 dxc6 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3
a6 without Be2.} 9. Qg4 Nf6 10. Qg3 Qxg3 {White has an edge.} 11. hxg3 e5 12.
f3 Nd7 {[#]} 13. g4 $146 ({Predecessor:} 13. a4 Bb7 14. Kf2 Bc5 15. f4 O-O-O
16. Bd3 b4 17. Na2 Be7 18. a5 c5 19. Nc1 {0-1 (39) Haussernot,C (2157)
-Tanriverdi,E (2283) Marmaris 2019}) 13... Nc5 14. Kf2 Ne6 15. g3 Bb7 16. Bd3
g5 ({Better is} 16... Be7 $11) 17. a4 $14 {[%cal Ra4b5]} O-O-O 18. axb5 axb5
19. Ne2 {[%cal Bc3e2,Be2c1,Bc1d3,Bd3e5][%mdl 32]} f6 20. Nc1 Nc5 21. Be2 Ne6
22. c3 Bc5 {[#]} (22... Kc7 $16) 23. Rh6 $1 $18 Rhf8 24. Nd3 ({Resist} 24. Rxh7
Rh8 $16) 24... Bxe3+ 25. Kxe3 Rf7 $2 {[#]} (25... Rde8 {might work better.} 26.
Rxh7 Rh8) 26. Nxe5 $1 {[%mdl 576] Pin} Rff8 27. Nd3 Rd7 28. Rah1 Rff7 29. b4
Rde7 30. Bd1 {White is clearly winning.} Kc7 31. Bb3 Bc8 32. Nc5 {Weighted
Error Value: White=0.03/Black=0.32} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.52"]
[White "Shevchenko, Kirill"]
[Black "Budisavljevic, Luka"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2632"]
[BlackElo "2508"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,87,27,18,0,22,20,12,0,0,-7,0,-35,-35,-46,-33,-30,-20,-33,-23,-24,-20,
-33,-19,-63,-68,-113,-103,-74,-70,-64,0,-20,22,29,25,0,0,0,209,217,239,249,252,
247,238,235,236,257,378,373,366,370,456,454,508,508,495,490,624,620,624,618,
612,592,843,843,997,930,5591,1241,5281,5120]} 1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4.
Bb5 Nge7 5. O-O a6 6. Bxc6 Nxc6 7. d4 cxd4 8. Nxd4 Qc7 9. Nxc6 bxc6 10. Qh5 $5
{[%mdl 4] [#] Exploring less charted territory. B30: Sicilian: 2...Nc6 3 Bb5,
lines without ...g6.} Be7 $146 ({Predecessor:} 10... d5 11. exd5 cxd5 12. Re1
Be7 13. Qe2 Bb7 14. Qg4 O-O 15. Bf4 Qc4 16. b3 Qc6 17. Rad1 Bf6 {1/2-1/2 (58)
Nebolsina,V (2269)-Wagenvoorde,G (2128) Vlissingen 2019}) 11. e5 O-O 12. Re1 {
The position is equal.} f5 13. exf6 Rxf6 14. Qh4 d5 15. Bg5 {[#]} Rh6 $1 {
[%cal Rh6h4]} 16. Bf4 $1 Qa7 17. Qg3 Rg6 18. Qd3 Bb7 19. Bg3 Rf8 20. Na4 c5 $1
21. c4 d4 $1 22. b3 Ba8 23. f3 Qb7 (23... Bd8 $15 24. Qe2 Bc7) 24. Re5 Qc6 (
24... Bd6 $5 {[%cal Rd6e5]} 25. Nxc5 Qa7 $11) 25. Rae1 Rff6 26. Rh5 Bd6 $1 27.
Kf2 Kf7 $2 {Black is now going downhill.} (27... Rh6 $1 $11 {and Black has
nothing to worry.} 28. Rxh6 Rxh6) 28. Bxd6 $18 (28. Rxh7 $6 Qc7 $14) 28...
Rxg2+ 29. Kxg2 Rxf3 {[#]} 30. Qe4 {[%cal Re4e6]} Qxe4 31. Rxe4 Bxe4 32. Re5 ({
And not} 32. Rxc5 d3 $11) ({But not} 32. Nxc5 $6 Rf5+ 33. Nxe4 Rxh5 $16) 32...
Ba8 (32... Rf4+ $142 33. Kg3 Rf3+ 34. Kg4 Bc6 35. Rxc5 h5+ 36. Rxh5 d3) 33. Kg1
d3 {[#]} 34. Re1 $1 ({Not} 34. Bxc5 d2 $14) 34... g5 {If Black can now play ...
d2 this consolidates a bit.} 35. Nxc5 {White is clearly winning.} e5 36. Nd7
Ke6 37. Nxe5 Kxd6 38. Nxf3 Bxf3 {[%mdl 4096] Endgame KR-KB} 39. Re3 {[%mdl 64]
Double Attack} Be2 {aiming for ...d2.} 40. Kf2 Kc5 41. Re5+ Kd4 42. Rxg5 Kc3
43. Ke3 (43. c5 $142 h6 44. Rg1) 43... Kc2 44. Rd5 {Weighted Error Value:
White=0.07/Black=0.33} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.53"]
[White "Suleymanli, Aydin"]
[Black "Durarbayli, Vasif"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2541"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "146"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,146,7,5,0,7,12,5,0,0,0,37,39,36,35,94,90,131,65,83,7,17,19,15,-14,-9,
-34,-31,-36,73,81,145,120,111,60,71,64,73,23,44,17,1,0,0,0,32,44,92,102,92,94,
91,94,79,75,239,249,210,67,69,49,64,54,50,0,0,-78,-73,-75,0,-64,-57,-78,0,-62,
-50,-100,-52,-52,-54,-70,-59,-71,-50,-63,-51,-102,-112,-117,-50,-86,-36,-179,
-157,-172,-83,-127,-139,-144,-143,-186,-121,-405,-402,-845,138,-201,-200,-362,
-192,-240,-192,-474,-474,-474,-447,-439,-420,-474,-466,-454,-425,-358,0,-456,
-439,-457,-450,-964,-483,-463,-424,-372,0,-370,0,-1158,-1100,-1432,-1277]} 1.
Nf3 d5 2. e3 Nf6 3. c4 c6 4. b3 Bf5 5. Bb2 e6 6. Nc3 {A12: English Opening: 1..
.c6 with b3 by White.} Nbd7 7. Nh4 Bg4 8. Be2 {[#] The position is equal.} Nc5
$146 ({Predecessor:} 8... Bxe2 9. Qxe2 Nc5 10. O-O dxc4 11. bxc4 Qd3 12. Nf3
O-O-O 13. Rfd1 Qxe2 14. Nxe2 Nd3 15. Bxf6 gxf6 {0-1 (74) Taghizadeh,R (2311)
-Vazquez,G (2527) chess.com INT 2021}) 9. f3 Bh5 (9... Nfe4 $5 {[%cal Rd8h4]}
10. g3 Nxc3 11. Bxc3 Bh3 $11) 10. d4 Ncd7 11. g3 Bd6 (11... Bb4 $14) 12. e4 $1
$16 Qa5 13. O-O (13. cxd5 $1 $16 cxd5 14. e5) 13... dxc4 $14 14. bxc4 (14. Bxc4
$16 O-O-O 15. Qc1) 14... g5 $1 $11 {[%cal Rg5h4]} 15. Ng2 e5 $1 16. f4 (16. Qa4
$5 {[%cal Ra4a5]} Qb6 {[%mdl 64] Double Attack} 17. Qc2 Qxd4+ 18. Kh1 $11)
16... exd4 (16... Bxe2 $2 17. Nxe2 gxf4 18. gxf4 $16) 17. Nb5 cxb5 18. Bxh5
O-O-O (18... Nxh5 $15 {stays ahead.} 19. Bxd4 Nxg3 $1 20. hxg3 Rg8) 19. e5 $1
$16 {[%cal Re5d6]} (19. Qxd4 $2 Bc5 $19) (19. fxg5 Nxh5 20. Qxh5 bxc4 $17)
19... Bc5 (19... bxc4 $142 20. exf6 (20. exd6 c3 $16) 20... Nxf6) 20. Bxf7 Rhf8
21. Bd5 ({Don't play} 21. exf6 $6 Rxf7 22. cxb5 Rxf6 $11) ({Much worse is} 21.
fxg5 $6 Nxe5 22. gxf6 Nxf7 $11) ({White should play} 21. e6 $16 Rxf7 22. exf7
bxc4 23. fxg5 (23. Bxd4 Nf8 $17)) 21... bxc4 22. Bxc4 Ne4 23. Bd3 (23. Qd3 $5 {
[%cal Rd3e4]} Nc3 24. Rae1 $16 (24. Qxh7 gxf4 25. Nxf4 Nxe5 $17)) 23... Nc3 {
[%cal Rc3d1]} 24. Qc2 gxf4 25. gxf4 Kb8 26. Kh1 Rde8 27. Rac1 {[%cal Rb2c3]}
Bb6 28. Bxc3 dxc3 29. Qxc3 Qxa2 30. Bc4 Qa5 31. Qb2 Bc5 $2 (31... Re7 $16 {
might work better.}) 32. e6 $1 $18 {[%cal Re6d7]} Ba3 33. Qa1 (33. Qa2 $1 $18
Nb6 34. Ra1 Nxc4 35. Qxc4) 33... Nb6 $14 34. Bb3 $1 {Black must now prevent f5!
} Rf5 $1 35. Rc2 (35. Rb1 {is interesting.} Be7 36. Qg7 Qc5 37. Rfc1 Qd6 38.
Qxh7 Rb5 39. Qe4) 35... Be7 36. Ra2 Qb5 37. Rf3 (37. Qb1 $11) 37... Bf6 $17 38.
Qd1 Qb4 (38... Rc5 $1 $17 39. Ne1 Qc6) 39. Rd2 (39. Qd2 $11 Qxd2 40. Rxd2)
39... Ra5 $15 {Strongly threatening ...Ra1.} 40. Ra2 Rf5 (40... Rxa2 $17 41.
Bxa2 Qb2) 41. Rd3 (41. Rd2 $11) 41... Rc5 42. Qd2 Qe4 43. Rc2 Rxc2 44. Qxc2 {
And now Rd8+! would win.} Rc8 45. Rc3 {[%cal Rc3c8]} Qb4 $40 {[%mdl 128] Black
mounts an attack.} 46. Rxc8+ Nxc8 47. h3 (47. Qc4 $15 Qxc4 48. Bxc4) 47... a5
$17 48. Kh2 Nd6 (48... h5 $17 49. Qd1 Be7) 49. Qd3 h5 50. Bc2 ({White should
try} 50. h4 $1 $15) 50... h4 $1 $19 51. Kh1 Bd8 (51... Be7 $1 $19 52. Qh7 {
[%mdl 64] Double Attack} Nb5) 52. f5 Bg5 53. Qd5 {[#] Threatens to win with
Qe5.} Bf6 54. Qd1 {[#]} Qc5 (54... Qa3 $1 $19 55. Ne3 Bg5) 55. Nf4 $2 {[%mdl
8192]} (55. Qd3 $17 {was worth a try.}) 55... Nxf5 56. Nd5 (56. Qd2 $142) 56...
Ne3 $2 ({Better is} 56... Bd4 $19 57. Nf4 Ne3 {[%mdl 64] Double Attack}) 57.
Nxe3 {[%mdl 8192]} (57. Nxf6 $16 {is forced if you want to stay better. Hoping
for Nd7+.} Qe7 58. Qd4 Qxe6 59. Qd8+ {[%mdl 64] Double Attack} Ka7 60. Qxa5+
Kb8 61. Qd8+ Ka7 62. Qd4+ {[%mdl 64] Double Attack} Kb8 63. Be4 Qxh3+ 64. Kg1)
57... Qxe3 {[%mdl 64] Double Attack} 58. Bf5 (58. Qd3 {only move.} Qxe6 59. Kg2
) 58... Ka7 (58... a4 $142 59. Qd6+ Ka7) 59. Qd5 Qc3 60. Be4 $2 (60. Kg1 {
is a better defense.}) 60... Qxh3+ 61. Kg1 {[%csl Ge4][%cal Rd5b7]} Qg3+ 62.
Kf1 {[%csl Ge4][%cal Rd5b7]} Qc7 63. Ke2 Be7 64. Bg2 Ka6 65. Be4 Ka7 $2 (65...
Qb6 $19 {...Qb4 is the strong threat.} 66. Bg2 Ka7) 66. Qb5 $2 {[%mdl 8192]} (
66. Bg2 $1 $11 {and White has nothing to worry.} Qb6 67. Kd3) 66... Qb6 67. Qd7
Qb4 68. Bf3 (68. Bg2 $142) 68... Qb2+ 69. Kd3 Qb1+ 70. Ke2 Qb2+ 71. Kd3 Qb4 $2
(71... Qb3+ 72. Ke2 Qb4) 72. Ke2 $1 h3 73. Bd5 h2 {Never resign too early! 
Weighted Error Value: White=0.54/Black=0.32} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.28"]
[Round "2.54"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Pichot, Alan"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2484"]
[BlackElo "2628"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,82,26,12,12,3,17,7,13,0,0,0,-6,-6,6,0,13,6,21,16,24,0,14,0,28,25,31,
0,22,18,57,0,0,0,0,-25,0,0,0,-2,-2,-5,-3,-3,0,0,0,0,0,0,0,0,0,-22,-23,-37,-35,
-62,0,0,0,-651,-644,-641,-558,-631,-591,-845,-211,-29975,-29973]} 1. e4 e5 2.
Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. Re1 h6 8. h3 a5 $1 {
[%mdl 4] outshines the older 8...a6. C54: Giuoco Piano: 4 c3 Nf6, main lines
with 5 d4 and 5 d3.} 9. Nbd2 a4 10. Nf1 Ra5 {The position is equal.} 11. a3 {
[#]} Bb6 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 11... Be6 12.
Bxe6 fxe6 13. Ng3 Ra8 14. d4 exd4 15. cxd4 Bb6 16. Be3 Qd7 17. Rc1 Na5 {
0-1 (55) Onischuk,V (2633)-Svidler,P (2723) Chess.com INT 2020}) 12. Be3 Bxe3
13. Nxe3 Ne7 14. Ba2 Ng6 15. d4 Qe8 16. Qc2 Be6 17. Bxe6 Qxe6 18. dxe5 Nxe5 19.
Nd4 Qd7 20. c4 Re8 21. Nd5 Qd8 22. b4 (22. Rad1 $14) 22... axb3 $1 $11 23. Qxb3
Rc5 24. Nf5 c6 25. Nxf6+ Qxf6 26. Rad1 Nxc4 27. Qxb7 d5 28. Qd7 Re5 29. f4 $1 {
[%cal Rf4e5]} Re6 (29... Rxe4 $2 30. Rxe4 dxe4 31. Qe8+ Kh7 32. Ne7 $18) 30.
Nd4 ({But not} 30. exd5 Rxd5 31. Rxd5 (31. Qc8+ $2 Kh7 $19) 31... Rxe1+ 32. Kf2
cxd5 $17) 30... Nb6 31. Qa7 Rxe4 32. Rxe4 dxe4 33. Qxb6 Rd5 34. Rd2 {[#]
Threatens to win with Nb3.} e3 35. Rd3 ({Wrong is} 35. Qb8+ $2 Rd8 $19) 35...
Qxf4 (35... Qd6 $15) 36. Qxc6 Qe4 {Hoping for ...e2.} 37. Rd1 $2 {[%mdl 8192]}
(37. Qc3 $11) 37... e2 $19 ({Worse is} 37... Rxd4 38. Qc8+ Kh7 39. Rxd4 $11)
38. Re1 Qxd4+ 39. Kh1 {[#]} Qe4 40. a4 f5 $2 (40... Kh7 {White must now
prevent ...f5.} 41. Kh2 Qf4+ 42. Kg1 Qe3+ 43. Kh2 Rd3) 41. Qb6 $2 (41. Kh2 $19)
41... Kh7 {Weighted Error Value: White=0.49/Black=0.26} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.1"]
[White "Firouzja, Alireza"]
[Black "Predke, Alexandr"]
[Result "1-0"]
[ECO "C92"]
[WhiteElo "2770"]
[BlackElo "2666"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,125,23,26,26,29,18,29,1,25,25,31,29,56,50,74,59,82,68,79,62,92,79,
110,115,84,105,103,104,102,89,124,107,150,103,118,31,27,29,51,24,18,20,28,23,
27,26,25,28,40,7,2,0,10,16,59,59,59,59,59,59,59,59,59,59,59,60,75,52,92,92,92,
92,92,92,83,97,114,114,214,186,245,252,266,258,397,325,572,469,2058,1654,12841,
12842,12842,12843,12843,12843,12844,12844,12845,12841]} 1. e4 e5 2. Nf3 Nc6 3.
Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Re8 10. d4 Bb7
11. Nbd2 Bf8 12. a3 h6 13. Bc2 Nb8 14. b3 Nbd7 15. Bb2 {C93: Closed Ruy Lopez:
Smyslov Variation.} Rb8 16. Rb1 $5 {[%mdl 4] An interesting side line.} g6 {[#]
} 17. Bd3 $146 {White has an edge.} ({Predecessor:} 17. b4 Ba8 18. Bd3 exd4 19.
cxd4 Nb6 20. d5 c6 21. dxc6 Bxc6 22. Rc1 Bb7 23. Nb3 Ba8 24. Nbd4 Bg7 25. Nc6
Bxc6 26. Rxc6 Qd7 27. Rc2 Rbc8 {1/2-1/2 (27) Werten,T (2280)-Mislin,R (2299)
ICCF email 2017}) 17... c6 18. Qc2 Nh5 19. Bf1 Ng7 20. dxe5 dxe5 21. c4 Rc8 22.
Rbd1 Qe7 23. c5 Nxc5 24. Nxe5 Nd7 {[#]} 25. Ndc4 {[%mdl 512]} Nxe5 26. Nxe5
Red8 27. Qc3 {aiming for Ng4.} h5 28. Rxd8 Qxd8 29. Re3 {And now Rd3 would win.
} Rc7 30. Rd3 Qe7 31. Qd2 ({White should play} 31. a4 $16) 31... Bc8 $1 $14 32.
f4 c5 33. Rf3 Ne6 34. a4 Nd4 35. Bxd4 cxd4 36. axb5 axb5 37. Bxb5 Qb4 38. Qxb4
Bxb4 39. Bc4 Kg7 40. Rf2 Ra7 41. Nc6 Ra1+ 42. Rf1 Rxf1+ 43. Kxf1 {[%mdl 4096]
Endgame KBB-KBN} Bd2 44. Ke2 Bxf4 45. Kd3 Bd7 46. Nxd4 g5 47. Kc3 Be5 {Black
is on the road to losing.} 48. Be2 g4 {[#]} 49. hxg4 $1 hxg4 50. Kc4 Kf6 51.
Kd5 Bc8 52. b4 Bb7+ (52... Bh2 $16 {was necessary.}) 53. Nc6 $18 g3 (53... Bg3
$142 54. Bxg4 Ba6 55. e5+ Kg5) 54. b5 Bc7 55. Kc5 Kg5 (55... Ke6 $142 56. Bg4+
Kf6) 56. e5 Kf4 $2 (56... Kf5 {keeps fighting.} 57. Bf3 Bxc6 58. Kxc6 (58. Bxc6
Bxe5 59. b6 Ke6 $16) 58... Bxe5) 57. Bf3 {White is clearly winning.} Ke3 (57...
Ba5 $142 58. Nd4 (58. Nxa5 Bxf3 59. b6 Bxg2 $17) 58... Bc8) 58. b6 Bb8 59. Nxb8
{[%mdl 64] Discovered Attack} Bxf3 60. Nc6 ({Weaker is} 60. gxf3 g2 $16) 60...
Bxg2 61. b7 Be4 62. b8=Q {e6! would kill now.} g2 63. Qb2 {Weighted Error
Value: White=0.08/Black=0.22} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.2"]
[White "Caruana, Fabiano"]
[Black "Saric, Ivan"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2800"]
[BlackElo "2644"]
[Annotator "TA"]
[PlyCount "145"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,145,9,25,20,37,17,18,18,19,10,26,30,44,35,26,29,47,21,28,23,31,30,32,
21,37,31,57,46,79,79,108,102,124,112,129,148,136,124,198,113,272,264,236,259,
247,247,338,31,31,31,32,32,32,32,32,33,29,31,36,36,36,13,79,41,108,63,64,64,64,
63,70,70,107,107,107,107,107,107,107,107,107,107,107,107,107,107,107,107,107,
107,121,107,142,0,114,107,107,107,107,107,107,107,107,107,107,107,107,107,107,
0,79,0,107,107,107,107,107,107,107,107,107,107,107,75,142,107,107,107,107,107,
107,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. e5
Nd5 8. Ne4 Bb7 9. Bd3 {B45: Sicilian Four Knights.} Qc7 10. f4 Nb4 11. O-O {
The position is equal.} c5 {White must now prevent ...c4.} 12. Qe2 {[#]} Qc6
$146 ({Predecessor:} 12... Nxd3 13. cxd3 Qc6 14. b3 Rc8 15. Be3 Be7 16. Rac1
Qb5 17. Rc4 Bd5 18. Rc2 O-O {0-1 (65) Babrauskas,D (2011)-Kovalenko,I (2643)
Lichess.org INT 2021}) 13. b3 Be7 14. f5 Nxd3 15. cxd3 Qd5 16. f6 gxf6 17. exf6
Bf8 18. Bf4 d6 19. Rac1 e5 20. Bg3 h5 21. h4 Rg8 22. Kh2 O-O-O 23. b4 Kb8 24.
bxc5 dxc5 25. Rc3 Ka8 26. Rf5 Qd4 (26... Bd6 $16) 27. Rxh5 (27. Bxe5 $18 Bd6
28. Bxd6 Rxd6 29. Rxh5 (29. Nxd6 Qxh4+ 30. Kg1 Qd4+ 31. Kh2 Qxd6+ 32. Qe5 Rxg2+
{[%mdl 64] Double Attack} 33. Kh3 Qd7 $17)) 27... c4 $2 (27... Ba6 $16) 28.
Rxc4 $18 Qxd3 29. Qxd3 Rxd3 {[#]} 30. Rg5 $1 {[%cal Rg5g8]} ({Don't play} 30.
Rxe5 $6 Bh6) ({Don't take} 30. Bxe5 $6 Ba3) 30... Rxg5 31. hxg5 ({White has to
play} 31. Nxg5 $18 Rd7 32. Bxe5) 31... Rd4 $14 32. Rc7 Bxe4 33. Rc8+ Kb7 34.
Rxf8 {[%mdl 4096] Endgame KRB-KRB} Bg6 35. Rg8 Rd5 36. Bf2 {aiming for Rxg6!}
e4 37. Be3 Kc6 38. a4 Kd7 (38... a6 $11 {keeps the balance.}) 39. Rb8 Ra5 (
39... a6 $14) 40. Rb4 Kc6 41. Kg3 Kd6 42. Kf2 Rf5+ 43. Ke1 a5 44. Rb8 Rd5 45.
Ra8 Kc6 46. g4 Kb7 47. Rg8 Kc6 48. Kf2 Kd7 49. Ra8 Kc6 50. Ra7 Kd6 51. Ke1 Kc6
52. Ke2 Kd6 53. Bd2 Kc6 54. Be3 ({Much worse is} 54. Bxa5 $6 Rxg5 55. Be1 Rxg4
$11) 54... Kd6 55. Kf2 Kc6 56. Kg3 Rd3 57. Kf4 Rd5 58. Ra8 Kc7 59. Rg8 {
Strongly threatening Rxg6!} Kd6 60. Rc8 Kd7 61. Rc4 Kd6 62. Rc8 Kd7 $1 {
[%cal Rd7c8]} 63. Ra8 (63. Rc1 {keeps more tension.} Kd6 64. Rb1 Kd7 65. Rb6
Kc7 66. Rb2) 63... Kc7 $1 64. Kg3 Kc6 65. Kf2 Kb7 66. Rg8 {And now Rxg6! would
win.} Kc6 67. Ke2 Kd7 68. Ra8 Kc6 69. Bd2 Kb7 ({Black should try} 69... Rd3)
70. Re8 Kc6 {White is better.} 71. Be3 Kd7 72. Re7+ Kc6 {[#]} 73. Ra7 {White
really could win this.  Weighted Error Value: White=0.19/Black=0.13} (73. Kf2
$1 $16) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.3"]
[White "Demchenko, Anton"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2651"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "149"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,149,0,-2,0,6,0,10,0,0,0,1,0,22,8,28,16,22,20,14,19,30,25,39,39,23,44,
81,81,64,73,75,71,77,81,109,99,100,100,100,95,104,104,118,92,93,92,81,81,113,
113,113,113,113,113,362,355,331,334,356,340,447,447,442,421,380,357,357,357,
380,357,447,357,429,448,470,470,519,519,512,501,486,486,472,457,424,206,206,
206,248,248,285,235,228,221,208,206,176,24,24,24,24,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4
exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 O-O 8. O-O d5 9. exd5 cxd5 10. h3 {
C47: Scotch Four Knights and Four Knights with 4 g3.} Be6 11. Qf3 Rb8 12. Rd1
c6 {[#]} 13. Bf4 $146 ({Predecessor:} 13. Ne2 Bd6 14. b3 Be5 15. Rb1 Re8 16.
Ng3 Qc7 17. Re1 Nd7 18. Nh5 Bh2+ 19. Kf1 {1-0 (26) Lugovskoy,M (2451)
-Navalgund,N (2326) Mumbai 2019}) 13... Bd6 14. b3 a5 15. Na4 Rb4 16. c4 Re8
17. Rac1 h6 18. Bf1 Bf8 19. Nc3 Bd6 20. Bxd6 Qxd6 21. Qd3 Qe7 {Black wants to
play ...dxc4.} 22. cxd5 Nxd5 23. Qa6 Nxc3 24. Rxc3 a4 25. bxa4 Rb2 26. Qxc6
Rxa2 27. Re3 Qf8 28. Bb5 Rc8 29. Qb6 Kh8 30. Red3 {Threatens to win with Rd8.}
Qc5 31. a5 Kh7 32. Rd6 g6 33. Bd7 Bxd7 34. Rxd7 Qf5 35. Qa7 $36 {[%mdl 2048]
White is in control.} Kg7 {[#]} (35... Rf8 $16) 36. Qd4+ $1 $18 Kh7 37. Rd5 Qe6
38. Rd6 Rc4 39. Rxe6 Rxd4 40. Rxd4 fxe6 {[%mdl 4096] Endgame KR-KR} 41. Rd7+
Kg8 42. Ra7 h5 43. h4 Ra1+ 44. Kh2 Ra4 45. g3 e5 46. Kg2 e4 47. Kf1 Ra2 48. a6
Kf8 {[#]} 49. Ke1 $1 Ke8 50. Kd1 Kd8 51. Kc1 (51. Ra8+ $142 Kc7 52. Ke1) 51...
Kc8 52. Re7 Rxa6 53. Kd2 ({Less strong is} 53. Rxe4 Ra2 $16) 53... Rf6 54. Ke2
({And not} 54. Rxe4 Rxf2+ 55. Ke3 Rf5 $11) 54... Kd8 55. Rxe4 Kd7 56. Ke3 Rf5
57. g4 $2 ({White should play} 57. Rf4 $18 {And now Rxf5 would win.} Rb5 58.
Re4) 57... hxg4 $1 $11 58. Rxg4 Rh5 $1 59. Re4 Kd6 {The position is equal.} 60.
f3 g5 61. hxg5 Rxg5 62. Kf4 Rg8 63. Kf5 {next f4 is good for White.} Rf8+ 64.
Kg4 Kd5 65. Re7 Rg8+ 66. Kf4 Rf8+ 67. Ke3 Kd6 68. Re4 Rf6 69. Re8 Kd7 70. Re5
Kd6 71. Re4 Rf7 72. Re8 Re7+ 73. Rxe7 Kxe7 74. Kf4 $1 {[%cal Rf4f5]
Threatening mate with Kf5.} Kf6 75. Ke4 {Black defended with fortune. 
Weighted Error Value: White=0.14/Black=0.16} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.4"]
[White "Donchenko, Alexander"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "D70"]
[WhiteElo "2648"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,13,18,10,12,19,31,29,20,20,20,20,25,25,27,21,28,28,23,17,20,21,22,
25,19,17,20,15,78,87,86,80,83,80,79,56,58,56,56,44,73,0,0,0,0,0,0,0,0,0,0,0,0,
0]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. e3 O-O 5. Be2 c5 6. dxc5 {E60: King's
Indian: Unusual lines and Fianchetto Variation without Nc3.} Ne4 7. Nd4 Nc6 8.
O-O {White is slightly better.} Nxc5 9. Nc3 d6 10. b3 Ne6 11. Nxe6 Bxe6 12. Bb2
Qa5 13. Qc1 {[#]} Rfd8 $146 ({Predecessor:} 13... Rac8 14. Rd1 Ne5 15. Nd5 Bxd5
16. Rxd5 Qc7 17. Rd1 Nd7 18. Bxg7 Kxg7 19. Qb2+ Kg8 {1/2-1/2 (33) Abasov,N 
(2632)-Saric,I (2667) Douglas 2019}) 14. Rd1 d5 15. cxd5 Bxd5 16. Nxd5 Rxd5 17.
Rxd5 Qxd5 18. Bf3 Qa5 (18... Bxb2 $11 19. Qxb2 (19. Bxd5 Bxc1 20. Rxc1 e6 $11)
19... Qa5) 19. Bxg7 $16 Kxg7 20. Bxc6 bxc6 21. Qxc6 {[%mdl 4096] Endgame
KQR-KQR} Rd8 22. g3 Rd2 23. a3 Qe5 24. Rc1 Ra2 25. Qc3 (25. a4 $16) 25... Qxc3
$11 {The position is equal.} 26. Rxc3 Rxa3 {KR-KR} 27. Rc7 e6 28. b4 a5 29.
bxa5 Rxa5 30. Kg2 h5 31. h4 {Weighted Error Value: White=0.05/Black=0.08}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.5"]
[White "Tari, Aryan"]
[Black "Fedoseev, Vladimir"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2646"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,101,25,18,13,30,27,33,34,37,38,37,0,16,0,0,0,0,3,85,-54,-46,-39,-40,
-50,-69,-55,-72,-61,-53,-75,-53,-43,-54,-67,-89,-176,-179,-233,-153,-167,-169,
-270,-98,-109,-101,-118,-118,-118,-7,-3,140,150,155,171,165,165,147,0,0,0,0,0,
-8,458,455,453,443,432,400,12,12,12,8,8,8,8,8,8,8,8,8,0,0,0,18,0,0,0,0,0,0,0,0,
0]} 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. a3 Bxc5 6. Nf3 {B12: Caro-Kann:
Advance Variation.} Nc6 7. b4 Bb6 8. Bb2 {White is slightly better.} Nge7 9.
Bd3 Ng6 10. b5 Na5 11. h4 Qc7 12. h5 Nf4 13. Bf1 Nc4 (13... g6 $1 $11 {remains
equal.}) 14. Bd4 {[#]} ({Only move:} 14. Bc3 $1 $16) 14... Ba5+ $146 ({
Predecessor:} 14... g6 15. Bxb6 axb6 16. Qd4 Nxh5 17. Bxc4 Qxc4 18. Qxc4 dxc4
19. Nbd2 Ra4 20. Rh4 Bd7 21. Rxc4 Rxc4 22. Nxc4 {1/2-1/2 (68) Severiukhina,Z 
(2279)-Okun,E (2145) Moscow 2012}) 15. c3 $1 {Threatens to win with g3.} f6 $1
$36 {[%cal Rf6e5][%mdl 2048] Black is pushing.} 16. g3 fxe5 17. Nxe5 Nxe5 18.
gxf4 Nf7 19. h6 Qxf4 20. hxg7 Rg8 {Strongly threatening ...Qe4+.} 21. Be2 Bd7
$1 22. Rh3 (22. Qd2 $17 {is a better defense.} Qxd2+ 23. Nxd2) 22... e5 $19 23.
Be3 Qf6 24. Rf3 (24. Rxh7 $2 d4 $19) 24... Qe6 25. Qa4 (25. Rg3 $142 d4 26. Bg4
) 25... Bb6 $2 (25... b6 $1 $19 {and Black stays clearly on top.} 26. Rg3 Qf6)
26. Rg3 Bxe3 27. fxe3 Qh6 {aiming for ...Qh2.} 28. Nd2 Nd6 (28... Rxg7 $17 29.
Rxg7 Qxg7) 29. O-O-O $1 $11 Qh2 (29... Rxg7 $11 30. Rxg7 Qxg7) 30. Rg5 $16 Rc8
{[#]} (30... Qxe2 $2 31. Rxe5+ Kd8 32. Rxd5 $18) 31. Qb4 {[%cal Rb4d6]} Qxe2
32. Rxe5+ {[%mdl 64] Double Attack} Kd8 33. Qxd6 (33. b6 $16 {[%cal Rb4h4]} Rc6
34. bxa7) 33... Rxc3+ $11 {[%mdl 64] Double Attack} 34. Kb2 Qd3 {( -> ...Rc2+)}
35. Nb1 $1 Qc2+ {[%mdl 8192]} (35... Rc2+ $11 {and Black stays safe.} 36. Ka1
Qxd1 37. Rxd5 (37. Rf5 $2 Ra2+ {[%mdl 64] Decoy, Clearance} 38. Kxa2 Qc2+ {
[%mdl 64] Double Attack} 39. Ka1 Qxf5 $19) 37... Qxd5 $1 38. Qxd5 Rxg7) 36. Ka1
$18 Qxd1 37. Re7 {[%csl Ge7][%cal Rd6d7]} Qg4 {[#]} (37... Rc7 $2 38. Rf7) 38.
Qf6 ({Less strong is} 38. Nxc3 Rxg7 39. Re5 (39. Nxd5 {is a self mate.} Qd1+
40. Kb2 Rg2+ 41. Kc3 Rc2+ 42. Kb4 Qb1+ 43. Ka5 Qxb5#) 39... b6 $14) 38... Rc4 {
[#] Hoping for ...Qg6.} ({But not} 38... Qg6 $2 39. Qf8+ Rxf8 40. gxf8=Q+ Kc7
41. Nxc3) 39. b6 $2 (39. Re4+ $1 $18 Kc7 40. Rxg4 Rxg4 41. Nc3) 39... Qg6 $1
$11 {[%cal Rg6f6] The position is equal.} 40. Qf8+ {[%mdl 64] Double Attack}
Be8 41. bxa7 Ra4 $1 42. Rxb7 {White threatens Qe7+ and mate.} Qxg7+ 43. Qxg7
Rxg7 44. Rxg7 {[%mdl 4096] Endgame Nc3 is the strong threat. KRB-KRN} Bd7 $1
45. Rg8+ Be8 46. Rg7 {Black must now prevent Nc3!} Bd7 $1 47. Nc3 Rxa3+ 48. Kb2
Rxa7 49. Nxd5 Rb7+ 50. Kc3 Bc6 51. Rxb7 {Weighted Error Value: White=0.26/
Black=0.16} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.6"]
[White "Yu, Yangyi"]
[Black "Bluebaum, Matthias"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2704"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,65,26,24,22,0,26,21,58,50,50,24,10,16,50,35,47,50,167,159,215,215,
219,216,258,264,265,262,264,264,262,257,257,257,261,258,316,331,380,380,391,
391,391,391,391,391,412,394,455,462,468,453,458,453]} 1. c4 e6 2. g3 d5 3. Bg2
Nf6 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 c5 8. Nc3 Qc7 {A13: English
Opening: 1...e6.} 9. d4 b6 {is now more promising than 9...b5.} 10. Bf4 Bd6 {
The position is equal.} 11. Bxd6 Qxd6 {[#]} 12. Ne4 $1 $146 {[%mdl 8] An
important novelty.} ({Predecessor:} 12. O-O Bb7 13. Rfd1 O-O 14. e4 cxd4 15.
Nxd4 Qc7 16. Rac1 Rac8 17. f4 Rfd8 18. e5 {1/2-1/2 (46) Svidler,P (2714)
-Nepomniachtchi,I (2792) Paris 2021}) 12... Nxe4 13. Qxe4 Ra7 14. O-O Bb7 15.
dxc5 Qxc5 {White now steadily converts the win.} (15... Nxc5 $14 16. Qe5 Qxe5
17. Nxe5 Ke7) 16. Qf4 $1 $18 {Threatens to win with Rac1.} O-O {[#]} (16... Qe7
$16 17. Rac1 e5 18. Nxe5 Nxe5) 17. Rfc1 $1 {[%cal Rc1c5]} Qb5 {[#]} 18. Rc7 $1
Qxb2 19. Qc1 Qxc1+ 20. Raxc1 Nc5 21. Ne5 Bxg2 22. Rxa7 Bd5 23. a3 a5 24. f3 h5
25. Rd1 a4 26. e4 Bb3 27. Rd6 f6 28. Ng6 Rb8 29. Nf4 e5 30. Nd5 Bxd5 31. exd5 {
White is clearly winning.} ({Weaker is} 31. Rxd5 Rc8 $18) 31... Kh8 32. Rc6 Rd8
33. d6 {Weighted Error Value: White=0.03/Black=0.22} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.7"]
[White "Sasikiran, Krishnan"]
[Black "Maghsoodloo, Parham"]
[Result "1/2-1/2"]
[ECO "C92"]
[WhiteElo "2640"]
[BlackElo "2701"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,66,23,24,27,22,29,31,35,37,27,32,34,29,0,0,0,0,0,0,0,0,0,0,0,62,60,
62,27,27,0,62,63,55,56,192,93,65,0,168,0,78,0,156]} 1. e4 e5 2. Nf3 Nc6 3. Bb5
a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Bb7 10. d4 Re8 11.
Nbd2 Bf8 12. a3 $1 {[%mdl 4] is now more promising than 12.a4.} h6 13. Bc2 d5
14. dxe5 {C93: Closed Ruy Lopez: Smyslov Variation.} Nxe5 15. Nxe5 Rxe5 16. Nf3
{White is slightly better.} Re8 {[%cal Rf6e4]} 17. e5 {[%cal Re5f6]} Ne4 18.
Bf4 c5 19. Qe2 {was the old line (19.a4).} f5 {[#]} 20. h4 $146 ({Predecessor:
} 20. Rad1 g5 21. Bh2 Qb6 22. Nd2 c4 23. Nf3 Bg7 24. h4 g4 25. Nd4 Qg6 26. a4
bxa4 27. Bxa4 {1/2-1/2 (34) Schoen,W (2482)-Hirsch,H (2206) Remote email 2014})
20... Be7 21. h5 Qb6 22. a4 Rad8 23. axb5 axb5 24. Red1 b4 (24... Ra8 $11) 25.
cxb4 $14 Qxb4 26. Bd2 Nxd2 27. Rxd2 Bc8 ({Better is} 27... Rf8 $11) 28. Ba4 $1
{[%cal Ra4e8]} Rf8 29. Bb5 {Threatens to win with Ra4.} Qe4 ({Black should try
} 29... c4 $14 30. Nd4 Bg5) 30. Qd1 (30. Ra7 $18 Rf7 31. Qd1) 30... Qb4 $16 31.
Qe2 (31. Bc6 $1 $14) 31... Qe4 $1 $18 32. Qd1 (32. Ra7 $18 {and White stays
clearly on top.} Bg5 33. Nxg5 hxg5 34. h6) 32... Qb4 $1 $16 {[%cal Rb4b5] [#]}
33. Qe2 (33. Bc6 $142 $1) 33... Qe4 $1 {Weighted Error Value: White=0.31/
Black=0.19} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.8"]
[White "Gukesh D"]
[Black "Artemiev, Vladislav"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2640"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,60,12,10,25,32,53,32,24,0,0,6,8,16,10,6,13,11,0,0,0,0,0,0,0,0,8,0,14,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6
5. Nf3 c5 6. O-O a6 7. b3 cxd4 8. Nxd4 Be7 9. Bb2 O-O {D27: Queen's Gambit
Accepted: Classical main line: 7 e4!? and 7 a4.} 10. Be2 b5 11. Nd2 Bb7 {
White is slightly better.} 12. a4 Nc6 {The position is equal.} 13. Bf3 Nd5 14.
axb5 Nxd4 15. Bxd4 {White wants to play b6.} axb5 16. Ne4 Nb4 {[#]} 17. Qe2
$146 ({Predecessor:} 17. Rc1 Rc8 18. Qe2 Qd7 19. h3 Bd5 20. Nc3 Bxb3 21. Qxb5
Qxb5 22. Nxb5 Bc2 23. Ra1 Nc6 24. Rfc1 {1/2-1/2 (24) Zemlyanov,S (2382)-Ilyin,
P (2386) ICCF email 2017}) 17... Bd5 18. Qxb5 Rb8 19. Qe2 Nc6 20. Bc3 Rxb3 {
[#] White must now prevent ...f5.} 21. Rfc1 h6 22. Nd2 Rxc3 23. Rxc3 Bf6 24.
Rca3 {Strongly threatening Rb1.} Bxa1 25. Rxa1 Ne5 26. Bxd5 Qxd5 27. Nf3 Nxf3+
28. Qxf3 Qxf3 29. gxf3 g5 30. Ra4 Kg7 {Weighted Error Value: White=0.05/
Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.9"]
[White "Wojtaszek, Radoslaw"]
[Black "Dreev, Aleksey"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2691"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,79,18,24,5,11,5,10,14,7,10,33,32,38,18,29,14,14,27,43,45,53,16,16,16,
16,18,16,14,28,25,67,14,16,0,51,25,54,7,30,28,35,27,31,21,41,0,55,58,51,50,57,
31,31,39,27,31,72,20,23,-2,0,0,-4,-24,0,-7,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. g3
d5 4. Bg2 dxc4 5. Nf3 Bb4+ 6. Bd2 a5 7. a3 {E04: Open Catalan: 5 Nf3.} Bxd2+ 8.
Nbxd2 b5 9. b3 cxb3 10. Qxb3 Ba6 11. O-O {[%mdl 1024] White has compensation.}
O-O 12. Rfc1 Nbd7 {[#]} 13. Qb2 $146 ({Predecessor:} 13. Ne1 Rc8 14. Nd3 Qe7
15. Qc3 b4 16. axb4 Bxd3 17. Qxd3 axb4 18. Ra7 Nb6 19. Rc6 {1/2-1/2 (53)
Suleymenov,A (2449)-Petrov,N (2555) Cheliabinsk 2021}) 13... Nd5 14. Nb3 Bb7
15. Nc5 Nxc5 16. Rxc5 c6 $1 17. Ne5 Qd6 18. Rac1 {[%cal Re5c6]} Rfc8 19. e3 Rc7
20. Qc2 Rac8 21. Qd2 (21. Bxd5 $14 exd5 22. Nd3) 21... Ra8 22. Qc2 Rac8 23. Be4
h6 24. Qd2 (24. a4 $5 {[%cal Re4d5]}) 24... Ra8 25. h4 Nf6 26. Bb1 (26. Bxc6
Bxc6 27. Rxc6 Rxc6 $17) 26... Qe7 27. Qd3 h5 28. a4 bxa4 (28... b4 $11) 29. Qd1
a3 30. Qa4 g6 31. Qxa3 Nd7 32. Nxd7 Rxd7 33. Be4 a4 34. R1c3 ({White should try
} 34. Ra1 $16) 34... Rdd8 35. f4 Ra7 36. R3c4 Rda8 37. Bc2 Ba6 38. Rxa4 {
[#] aiming for Rca5.The position is equal.} Bb5 39. Rxa7 Qxa7 40. Qxa7 {
Weighted Error Value: White=0.15/Black=0.11} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.10"]
[White "Ponomariov, Ruslan"]
[Black "Korobov, Anton"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2631"]
[BlackElo "2690"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,71,39,39,39,40,39,41,41,39,39,39,34,78,73,106,100,95,77,85,74,80,79,
89,75,93,91,81,77,129,108,104,54,49,33,40,31,35,35,30,43,42,0,0,0,0,6,6,6,23,6,
17,8,8,8,8,8,4,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O Ngf6 5. Re1 a6
6. Bf1 e5 7. c3 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} Be7
8. d4 O-O 9. d5 {White is slightly better.} b5 {[#]} 10. a4 $146 {[%cal Ba2a4,
Ba4b5][%mdl 32]} ({Predecessor:} 10. b3 Nb6 11. Na3 Bg4 12. h3 Bh5 13. Bd3 Bg6
14. c4 b4 15. Nb1 Qd7 16. Nbd2 {0-1 (41) Serpetsidaki,E (1493)-Moshou,A (1651)
Thessaloniki 2014}) 10... Rb8 11. b3 c4 12. axb5 cxb3 {[#]} 13. c4 $1 ({
Much weaker is} 13. Qxb3 $6 Nc5 $11) 13... Nc5 14. Nbd2 Qb6 {Black wants to
play ...Ng4.} 15. Ba3 {Threatens to win with Bxc5.} Ng4 {aiming for ...Nxf2!}
16. Qe2 axb5 17. cxb5 {Strongly threatening Bxc5.} Bd7 18. h3 Nf6 {[#]} 19. Qe3
$1 {Nc4 is the strong threat.} Rfc8 (19... Bxb5 $142 20. Bxb5 Qxb5) 20. Bxc5
$16 Qxc5 21. Qxc5 ({Of course not} 21. Nxb3 $6 Qxe3 22. Rxe3 Bxb5 $11) (21.
Qxb3 {with more complications.} Rb7 22. Reb1 g6 23. Qd1 Qc7 24. Bd3) 21... Rxc5
22. Nxb3 Rcc8 23. Na5 {And now Nc6 would win.} Bxb5 24. Bxb5 Rxb5 25. Nc6 Rb7
26. Reb1 (26. Rec1 {feels hotter.} Kf8 27. Nd2 g6 28. Rc4 Rcc7 29. f3) 26...
Rxb1+ 27. Rxb1 Bf8 28. Nd2 Ra8 29. f3 Nd7 30. Nc4 Nc5 {The position is equal.}
31. Rb8 Rxb8 32. Nxb8 g6 33. g4 f5 34. gxf5 gxf5 35. exf5 Kf7 36. Kf2 {
Weighted Error Value: White=0.06/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.11"]
[White "Kryvoruchko, Yuriy"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "2686"]
[BlackElo "2630"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,81,0,6,-19,26,24,41,34,35,20,21,12,20,10,7,7,12,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,-5,-9,-7,0,-13,-14,-13,0,0,0,0,0,0,0,-73,-73,-73,-73,-83,-83,-96,-87,
-112,-112,-112,-112,-127,-127,-139,-112,-112,-112,-124,-112,-141,-141,-141,
-141,-141,-141,-141,-112,-112]} 1. e4 c6 2. Nf3 d5 3. d3 dxe4 4. dxe4 Qxd1+ 5.
Kxd1 Nd7 6. Nbd2 {B10: Caro-Kann: 2 d3 and 2 c4.} Nc5 7. Ne5 Nf6 {[#]} 8. f3
$146 {White is slightly better.} ({Predecessor:} 8. Bc4 e6 9. f3 b5 10. Be2 Bb7
11. c3 Bd6 12. Nd3 Nfd7 13. Nxc5 Nxc5 14. Nb3 Nxb3 15. axb3 {0-1 (43) Fantinel,
T (2380)-Anton Guijarro,D (2673) Chalons en Champagne 2021}) 8... Nfd7 9. Nec4
e5 10. Nb3 f6 11. c3 Kd8 12. Kc2 Kc7 13. Nxc5 Nxc5 14. b4 Na4 15. Be2 Be6 16.
a3 Be7 17. Be3 Rhd8 18. Rhd1 a6 19. Rxd8 Rxd8 20. Nb2 Nxb2 21. Kxb2 c5 22. Rd1
Rxd1 23. Bxd1 $11 {[%mdl 4096] Endgame KBB-KBB} Bc4 24. bxc5 Kc6 25. Ba4+ Bb5
26. Bb3 {[#] Hoping for c4.} Bxc5 27. c4 Bxe3 $17 28. cxb5+ Kxb5 {KB-KB} 29. h4
Kc5 30. h5 Kd4 31. Bg8 h6 32. Be6 b5 33. Kb3 Bd2 34. a4 Ke3 35. axb5 axb5 36.
Bf5 Kf4 37. g4 Kxf3 38. Kc2 Be1 39. Kb3 Ke3 40. Bg6 b4 41. Bf5 {Weighted Error
Value: White=0.09/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.12"]
[White "Hovhannisyan, Robert"]
[Black "Sjugirov, Sanan"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2622"]
[BlackElo "2663"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,95,22,39,7,18,0,0,0,29,-4,57,14,17,14,23,3,19,0,0,0,50,63,82,81,75,
77,70,81,102,96,102,102,97,98,97,104,98,111,112,113,104,124,248,249,242,244,
250,245,237,235,274,262,271,270,268,261,246,256,241,194,229,212,188,0,228,220,
208,216,260,260,237,246,270,247,550,549,519,520,456,447]} 1. e4 e5 2. Nf3 Nc6
3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. c3 b5 7. Bb3 d6 8. d4 Bb6 9. a4 Rb8 10. a5 {
C78: Ruy Lopez: Archangelsk and Möller Defences.} Ba7 (10... Bxa5 $2 11. dxe5 (
11. d5 Ne7 $18) 11... dxe5 12. Qxd8+ Kxd8 13. Bd5 $18 (13. Bxf7 Bb6 $16)) 11.
Be3 Bg4 12. Nbd2 {The position is equal.} O-O 13. h3 Bh5 ({Black should try} 
13... exd4 $11 14. cxd4 Bc8) 14. Qe1 exd4 15. Nxd4 Nxd4 16. cxd4 {[#]} Re8 $146
({Predecessor:} 16... Bg6 17. e5 dxe5 18. dxe5 Bxe3 19. Qxe3 Nd5 20. Bxd5 Qxd5
21. Rfc1 Rbd8 22. Nf1 Rfe8 {1-0 (47) Narayanan,S (2525)-Jeet,J (2169) Kolkata
2018}) 17. f3 $36 {[%mdl 2048] White has the initiative.} c5 18. dxc5 Bxc5 19.
Qf2 Bg6 20. Rfd1 (20. Bxc5 dxc5 21. Rfd1 Qc7 $15) 20... Qe7 21. Nf1 Rbc8 22.
Bd4 Nh5 23. Ne3 Nf4 24. Nd5 Nxd5 25. Bxd5 Kh8 26. Rac1 f5 27. Bxc5 Rxc5 28.
exf5 Bxf5 29. Qd2 Rec8 (29... h6 $16 {is a better defense.}) 30. Rxc5 $18 dxc5
{[#]} 31. Bb7 $1 {[%cal Rb7c8][%mdl 512]} Rb8 {[#]} (31... Qxb7 32. Qd8+ $3 {
[%mdl 512]} Rxd8 33. Rxd8#) 32. Qd6 $1 Qxd6 (32... Qxb7 33. Qd8+ $3 {[%mdl 512]
} Rxd8 34. Rxd8#) 33. Rxd6 {[%mdl 4096] Endgame KRB-KRB} h6 34. Bxa6 Ra8 35.
Kf2 (35. Bxb5 $6 Rxa5 36. Bc4 g6 $16) 35... Kg8 36. Ke3 (36. Bxb5 $6 Rxa5 37.
Bc4+ Kf8 $18) 36... Kf7 37. Kf4 (37. Bxb5 Rxa5 38. Bc4+ Ke7) 37... Be6 38. Rb6
{Strongly threatening Ke5.} ({But not} 38. Bxb5 $6 Rxa5 39. Rb6 c4 $16) 38...
Ba2 39. Rb7+ Kf6 40. Rb6+ ({And not} 40. Rxb5 Rxa6 41. Rxc5 Ke6 $11) (40. Bxb5
$18 g5+ 41. Ke4 Rxa5 42. Rb6+ Kg7 43. Ke5) 40... Ke7 $2 (40... Kf7 $1 $11 {
and Black is okay.}) 41. Bxb5 {a6 is the strong threat.} Rxa5 {[#]} 42. Ke5 $1
Bb3 43. Rb7+ Kf8 44. Bc6 c4+ 45. Bd5 Ra2 $2 (45... Ke8 {is tougher.} 46. f4 (
46. Rxg7 Rxd5+ 47. Kxd5 c3+ 48. Kd6 cxb2 $11) 46... g6) 46. Rf7+ {White is
clearly winning.} Ke8 47. Rxg7 Ra5 48. Rb7 {Weighted Error Value: White=0.10/
Black=0.33} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.13"]
[White "Ponkratov, Pavel"]
[Black "Kollars, Dmitrij"]
[Result "1-0"]
[ECO "C91"]
[WhiteElo "2659"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,133,6,8,0,0,2,19,0,0,0,0,0,0,0,0,0,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,-8,
0,-33,-18,-14,0,0,38,-5,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,31,38,32,20,25,14,14,14,7,10,7,7,7,-25,49,54,50,46,99,96,114,117,116,120,128,
127,180,178,170,124,441,441,437,438,437,433,433,433,433,433,429,429,585,419,
763,737,679,669]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
7. Bb3 d6 8. c3 O-O 9. d4 Bg4 10. Be3 Bh5 11. h3 {C91: Closed Ruy Lopez: 7...
d6 8 c3 0-0 9 d4.} exd4 (11... Nxe4 $2 12. Bd5 $18) 12. cxd4 Na5 {The main
line 12...Na5 scores better than 12...d5.} (12... Nxe4 $2 13. Bd5 $18) 13. Bc2
{The position is equal.} Nc4 14. Bc1 d5 15. e5 Ne4 16. Nc3 Nxc3 17. bxc3 a5 18.
Bf5 Ra6 19. Qd3 Bg6 20. Bxg6 Rxg6 21. Nd2 {[#]} Qd7 $146 ({Predecessor:} 21...
Rc6 22. Nxc4 Rxc4 23. Rb1 Qd7 24. Bd2 b4 25. Re3 Qe6 26. Rg3 bxc3 27. Bxc3 Bb4
28. Bxb4 axb4 {0-1 (60) Gomez Dieguez,D (2297)-Arizmendi Martinez,J (2488)
Toledo 2021}) 22. Re2 c5 23. Nb3 cxd4 24. Nxd4 Bc5 25. Kh2 Re8 26. Bf4 (26. Nf3
{keeps more tension.} h6 27. Bf4 a4 28. Bg3 a3 29. Rd1) 26... Bxd4 27. Qxd4
Rge6 28. Rd1 Rd8 29. Ree1 Qe8 30. Bg3 f6 {[%cal Rf6e5]} 31. f4 {Threatening
exf6.} fxe5 32. fxe5 Qc6 33. Rd3 h6 34. Rf1 Rde8 {[%cal Rc4e5]} 35. Re1 (35.
Qxd5 $2 Qxd5 36. Rxd5 Ne3 $19) 35... Rd8 36. Re2 a4 37. Re1 Rd7 38. Rf3 Rde7
39. Rf5 Re8 40. Rb1 R6e7 41. Rbf1 Re6 42. Bf4 Qd7 43. Rf3 Na5 44. Rg3 Nc6 45.
Qd2 Rf8 46. Rh5 {[%cal Rf4h6] Strongly threatening Bxh6.} Kh7 47. Qd3+ Kh8 48.
Rf5 Rxf5 49. Qxf5 {Black must now prevent Bxh6!} Qe8 50. Rd3 (50. Re3 {feels
hotter.} Kg8 51. Qd3 Ne7 52. Bg3 Qc6 53. Re2) 50... Qg8 ({Reject} 50... Nxe5 $6
51. Rxd5 Ng6 52. Bc7 $14) ({Black should try} 50... g6 $11 51. Qg4 Nxe5 52.
Bxe5+ Rxe5) 51. Rd2 $14 ({And not} 51. Rxd5 Ne7 $17) 51... Ne7 52. Qd3 $36 {
[%mdl 2048] White fights for an advantage.} Rb6 (52... Qf7 $14 53. Bg3 Rb6) 53.
Be3 $16 Rb8 54. Bc5 Qe6 55. Bd6 Rb7 56. Rf2 Ng6 (56... Kg8 $16 {was worth a
try.} 57. g4 Rb6) 57. Qf5 $1 $18 {[%cal Rf5e6]} Qxf5 58. Rxf5 {[%mdl 4096]
Endgame KRB-KRN} d4 $2 {[%mdl 8192] Black cannot hold the game after this.} (
58... Rd7 $16) 59. cxd4 b4 60. e6 b3 61. axb3 axb3 {...b2 is the strong threat.
} 62. Rf1 b2 63. Rb1 Kg8 64. d5 {[%cal Bd4d5,Bd5d6][%mdl 32]} Rb3 65. e7 Re3 {
[#]} ({Not} 65... Kf7 $2 66. Rf1+ Kg8 67. e8=Q+ $18) (65... Nxe7 $142 66. Bxe7
h5) 66. Bc5 $1 Re5 {[#]} 67. d6 $1 {[%cal Rd6d7] Weighted Error Value: White=0.
04/Black=0.17} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.14"]
[White "Brkic, Ante"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[ECO "C92"]
[WhiteElo "2621"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,115,26,25,29,19,27,25,26,29,24,23,33,47,46,0,51,8,38,0,0,-30,-31,-37,
0,0,0,0,15,6,18,19,25,0,29,9,58,50,95,102,156,31,155,106,348,260,233,124,116,
74,74,96,104,110,95,98,97,89,94,96,85,76,87,62,152,179,174,156,145,144,139,140,
149,113,93,94,95,0,84,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4
Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Bb7 10. d4 Re8 11. Nbd2 Bf8
12. a3 h6 13. Bc2 Nb8 14. b3 Nbd7 15. Bb2 g6 16. a4 Bg7 {C93: Closed Ruy Lopez:
Smyslov Variation.} 17. Bd3 c6 18. Qc2 Nh5 {White has an edge.} 19. Bf1 Nf4 20.
b4 Nb6 21. axb5 cxb5 {[#]} 22. g3 $146 ({Predecessor:} 22. dxe5 dxe5 23. c4
bxc4 24. Nxc4 Nxc4 25. Bxc4 Re7 26. Ra5 Qd6 27. Qb3 Rc8 28. Rd1 {1-0 (49) Chen,
Q (2415)-Xu,M (2332) Daqing 2018}) 22... exd4 (22... Ne6 $11) 23. cxd4 Rc8 24.
Qb3 (24. Qb1 $5 {[%cal Rg3f4]} Nh5 25. d5 $11) 24... d5 {[%cal Rd5e4]} 25. e5
Ne6 26. Rab1 Nc4 27. Qd3 Nxb2 28. Rxb2 Qe7 29. h4 Rc4 30. Reb1 $1 ({Don't play
} 30. Nxc4 dxc4 31. Qe3 Bxf3 $17) 30... Rec8 31. Rb3 ({Much worse is} 31. Nxc4
dxc4 32. Qe3 Bxf3 $17) 31... Rc1 32. Qe3 R8c2 33. Ne1 Rxb1 34. Nxc2 Rd1 (34...
Rc1 $142 35. Rb2 Qc7) 35. Rc3 (35. Nf3 $16) 35... g5 (35... a5 $1 $14) 36. h5
f6 $2 {[#]} (36... a5 $16 {was necessary.}) 37. Qe2 Rxf1+ 38. Nxf1 (38. Kxf1
$18 {Threatens to win with exf6.} fxe5 39. dxe5) 38... fxe5 $16 39. dxe5 d4 40.
Rd3 Qd7 41. Nh2 Qd5 {[%csl Gb7][%cal Rd5h1] [#]} 42. f3 {Hoping for Ng4.} ({
Of course not} 42. Nf3 $6 g4 $11) 42... Qxe5 43. Qxe5 Bxe5 44. Ng4 Bg7 45. Kf2
Bd5 46. Ra3 Bc4 (46... Nc7 $1 $14) 47. Rxa6 {Na3 is the strong threat.} d3 48.
Nce3 d2 49. Kg2 Kf8 50. Nf2 Nd4 51. Ra8+ Kf7 52. Ra7+ Kf8 53. Ra8+ Kf7 54. Ne4
({White should try} 54. Nf1 $16) 54... Nf5 $11 {The position is equal.} 55.
Ra7+ Kf8 56. Ra8+ Kf7 57. Ra7+ Kf8 58. Ra8+ {White really could win this. 
Weighted Error Value: White=0.22/Black=0.19} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.15"]
[White "Praggnanandhaa R"]
[Black "Howell, David W L"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2618"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,91,8,9,20,21,15,10,27,26,30,15,22,13,13,13,16,10,14,13,25,16,22,12,
26,31,30,28,30,35,22,29,33,21,28,1,14,17,23,10,23,-44,-36,-75,-79,-67,-67,-68,
-72,-75,-75,-76,-55,-55,-55,-55,0,0,0,-55,-16,-26,0,0,0,0,0,0,0,0,0,0,95,10,4,
0,0,0,17,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. Nc3 d6 6. a3 O-O
7. O-O h6 {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack.} 8. h3
Be6 $1 {8...Be6 scores better than 8...a6.} 9. Nd5 Qd7 10. Re1 Rae8 {[#]} 11.
b4 $146 ({Predecessor:} 11. c3 Bd8 12. Ba2 Bxd5 13. exd5 Ne7 14. c4 Nf5 15. b4
e4 16. dxe4 Nxe4 17. Bb2 {1/2-1/2 (29) Hoynck van Papendrecht,F (2120)-Sanchez
Romero,M ICCF email 2016}) 11... Bd8 12. Nxf6+ Bxf6 13. Bxe6 Rxe6 14. c4 a6 15.
Bb2 g6 16. Rc1 Bg7 17. b5 axb5 18. cxb5 Nd8 {[%cal Bc6d8,Bd8e6,Be6c5][%mdl 32]}
19. a4 Re7 20. d4 exd4 21. Bxd4 Ne6 22. Bxg7 Kxg7 23. Qd5 Nc5 24. e5 b6 25.
Red1 Rd8 26. exd6 (26. Qa2 $11) 26... Qxd6 $15 27. Qc4 Qxd1+ 28. Rxd1 Rxd1+ 29.
Kh2 Ne4 $1 {[%cal Re4f2]} 30. Qb4 Rd6 31. Qb2+ Kh7 32. Nd4 {[#]} Nd2 $1 33. Qc3
{[#]} Nb1 ({Black should play} 33... h5 $1 $15) 34. Qb2 $11 Nd2 35. Qc3 $1 $15
({But not} 35. Qxd2 Red7 $17) 35... Red7 36. Nc6 Nf1+ 37. Kg1 Rd1 38. g4 Ng3+ (
38... R7d3 $5 39. Qf6 $8 Nd2+ 40. Kg2 Nf3 41. Qxf7+ {[%mdl 64] Double Attack}
Kh8 42. Qf6+ Kh7 43. Qf7+ Kh8 44. Qf8+ Kh7 45. Qf7+ $11) 39. Kg2 $1 Ne4 40. Qe5
Ng5 {aiming for ...Rg1+!} 41. Qe8 {Ne5 is the strong threat.} Ne6 (41... Kg7 $1
$11) 42. Ne5 (42. Ne7 $16 Rxe7 43. Qxe7) 42... Ng7 $11 {The position is equal.}
43. Qf8 Ne6 44. Qe8 Ng7 45. Qf8 Ne6 46. Qe8 {Weighted Error Value: White=0.11/
Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.16"]
[White "Henriquez Villagra, Cristobal"]
[Black "Najer, Evgeniy"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2608"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "170"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,170,4,15,0,0,0,0,-22,8,22,11,14,22,20,27,14,31,0,0,0,8,0,4,-25,-22,
-41,-32,-54,-39,-36,-56,-41,-44,-41,-29,-29,-27,-35,-47,-39,-37,-42,-40,-103,
-84,-97,-103,-125,-125,-133,-116,-111,-108,-232,-81,-62,-58,-71,0,-47,-36,-51,
0,0,0,0,0,0,0,-15,-23,-23,0,0,0,0,0,0,0,0,0,-60,-66,-61,0,0,0,0,0,0,0,0,0,-22,
-22,-22,-22,-27,0,0,0,0,0,0,0,-10,-19,-33,0,-43,-49,-99,-81,-360,-360,-351,
-304,-322,-298,-483,-488,-458,-452,-371,-166,-168,-159,-173,-126,-274,-260,
-235,-200,-341,-304,-693,-614,-1561,-1688,-12839,-12839,-12837,-12727,-12842,
-12842,-12843,-12843,-12843,-12843,-12844,-12844,-12845,-12846]} 1. b3 d5 2.
Bb2 Bf5 3. Nf3 e6 4. g3 h6 5. Bg2 Nf6 6. O-O Be7 7. d3 O-O 8. Nbd2 a5 9. a4 c6
10. e3 Na6 {[%cal Bb8a6,Ba6b4,Bb4a2][%mdl 32]} 11. Nd4 {A07: Réti Opening: New
York and Capablanca Systems.} Bh7 12. f4 Nb4 {[#]} 13. Bh3 $146 {The position
is equal.} ({Predecessor:} 13. Kh1 Nd7 14. e4 Bf6 15. e5 Be7 16. Bh3 c5 17. Nb5
Nb6 18. Nf3 Qd7 19. Qe2 {1/2-1/2 (64) Novak,I-Cibulka,V Stary Smokovec 1972})
13... c5 14. Nb5 Rc8 15. Rc1 Na2 16. Rb1 Nb4 17. Rf2 Ne8 18. Na7 Ra8 19. Nb5
Bf6 20. Bxf6 Nxf6 21. Nf3 c4 22. Ne5 cxd3 23. cxd3 Nd7 24. Nxd7 Qxd7 25. Rd2
Rac8 26. Qe2 Rc5 27. Rbd1 Qc6 28. g4 Rc1 29. f5 exf5 30. gxf5 Re8 31. Nd4 ({
White should play} 31. e4 $15) 31... Qc7 32. Rxc1 Qxc1+ 33. Kf2 Qc7 34. Kg2 Kh8
35. Bg4 Qe5 36. Qd1 (36. Qf3 $17) 36... Qf6 $2 ({Stronger than} 36... Qxe3 37.
Re2 $1 $16) (36... h5 $19 {has better winning chances.} 37. Bxh5 Qxe3) 37. Qf3
$17 Qg5 38. Kf2 Qf6 (38... Rc8 $17) 39. Qf4 Rc8 40. Be2 g5 (40... Rc3 $15) 41.
fxg6 $1 $11 Qxf4+ 42. exf4 Bxg6 43. Rd1 Kg7 44. h3 Kf6 45. Ke3 b6 46. Kd2 Rc5
47. Rf1 Bf5 48. Rg1 Nc6 49. Nxc6 Rxc6 {[%mdl 4096] Endgame KRB-KRB} 50. h4 (50.
Rb1 $11) 50... d4 $15 51. b4 Rc3 (51... axb4 $15 52. Rb1 Rd6) 52. bxa5 $11 bxa5
53. Rb1 Ra3 54. Rb6+ $1 Be6 55. Bg4 $1 Rxa4 56. h5 Ra2+ 57. Ke1 $1 Rg2 58. Bf3
Rh2 (58... Rc2 {feels hotter.} 59. Be4 Ke7 60. f5 Bc8 61. f6+ Kd7) 59. Be4 Ke7
60. f5 Bd7 61. f6+ Kd8 62. Bg6 Rc2 ({Not} 62... fxg6 $2 63. hxg6 Rh1+ 64. Kf2
$18) 63. Ra6 Be8 64. Bf5 {Hoping for Ra8+.} (64. Be4 {looks sharper.} a4 65.
Kd1 Rc5 66. Ra8+ Kd7 67. Bf3) 64... Rc5 65. Bg4 Re5+ 66. Kf2 $2 {[%mdl 8192]} (
66. Kd2 $17) 66... Kc7 $19 67. Kg3 a4 68. Kf4 Re1 {aiming for ...Kb7.} 69. Bf3
$2 {[#]} (69. Bh3 {keeps fighting.} Re3 70. Bf5) 69... Re6 $1 {[%cal Re6a6]}
70. Ra7+ Kb6 71. Rb7+ Ka6 (71... Kc5 $142 72. Kf5 Re1) 72. Kf5 Re3 $1 {[%csl
LRd3,LRf3]} 73. Bd5 Rxd3 74. Ke4 (74. Re7 $17 {is a better defense.} Re3 75.
Be4) 74... Rd1 75. Rb8 {[#]} Ka5 $1 76. Bc4 (76. Rb7 {was necessary.}) 76...
Bc6+ 77. Ke5 $2 (77. Kf4 d3 78. Ke3) 77... d3 {And now ...d2 would win.Black
is clearly winning.} 78. Kd6 {[#]} d2 $1 79. Kxc6 {KRB-KR} (79. Rb2 a3) 79...
Rc1 80. Rb5+ Ka6 81. Rb6+ Ka7 82. Rb7+ Ka8 83. Rd7 d1=Q (83... Rxc4+ $2 84. Kb5
$19) 84. Rxd1 Rxd1 85. Bxf7 Rf1 {Weighted Error Value: White=0.12/Black=0.10}
0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.17"]
[White "Oparin, Grigoriy"]
[Black "Petrosyan, Manuel"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "2654"]
[BlackElo "2605"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,93,22,40,5,14,2,40,-6,0,0,0,-2,61,58,101,101,78,96,90,92,155,137,194,
191,181,191,747,12,0,-87,-89,-113,-86,-152,-120,-116,-120,-146,-90,-74,0,0,0,0,
0,0,49,59,58,31,73,63,55,56,62,67,82,72,108,0,0,0,0,0,0,0,0,0,0,0,9,17,304,304,
304,304,304,290,283,283,261,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6
5. Nc3 Qc7 6. Be3 a6 7. g4 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6 Be3 a6
without Be2.} b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 8. Nxc6 Qxc6 9. Qd2 {White is
slightly better.} b4 10. Ne2 Qxe4 11. Rg1 {[#]} d5 $146 (11... Qb7 $11) ({
Predecessor:} 11... Qc4 12. Nf4 Qc7 13. O-O-O Nf6 14. Bg2 Bb7 15. g5 Ne4 16.
Qd4 Nd6 17. Qxb4 Bxg2 18. Nxg2 {1/2-1/2 (47) Karjakin,S (2758)-Rapport,R (2760)
Stavanger 2021}) 12. Bd4 $1 $14 {[%mdl 1024] White has compensation.} Ne7 13.
O-O-O h5 14. Bg2 $1 {[%cal Rg2e4]} Qh7 15. g5 Ng6 (15... Qf5 $142) 16. f4 $1
$16 Nh4 {[#]} (16... Bd6 $16 {was worth a try.}) 17. Bxd5 $1 $18 {[%mdl 512]}
exd5 18. Bf2 $1 {[%csl LRd5,LRh4]} Bf5 $2 (18... Bb7) 19. Bxh4 $2 (19. g6 $18
Nxg6 20. Qxd5 {[%mdl 64] Double Attack}) 19... Bc5 $1 $11 20. g6 (20. Qxd5 Be3+
21. Kb1 Bxc2+ 22. Ka1 O-O $17) (20. Ng3 $11 O-O 21. Nxf5 Qxf5 22. Rgf1) 20...
Bxg6 $17 {White must now prevent ...0-0.} 21. Nd4 O-O (21... Be4 {looks
sharper.} 22. Rde1 Rc8 23. Kb1 f6 24. Rg3 O-O) 22. Bf6 gxf6 23. f5 {[%mdl 64] 
[#] Pin} Rae8 $1 24. Kb1 {[#]} (24. Rg3 h4) 24... Kh8 25. Rgf1 {[#]} Re5 26.
fxg6 $11 fxg6 27. Nc6 Ree8 28. Qxd5 Be3 29. Nxb4 Qe7 30. Qc4 (30. Nxa6 {
feels hotter.} f5 31. Qc6 Bh6 32. h3 Bg7 33. c3) 30... Rc8 31. Qd3 Qxb4 32.
Qxe3 {Threatening mate with Qh6+.} g5 33. Qe2 {[%mdl 64] Double Attack} Qg4 34.
Qxa6 Kg7 35. Qd3 (35. b3 $16) 35... Rfd8 36. Qxd8 Rxd8 37. Rxd8 {[%mdl 4096]
Endgame KQ-KRR} Qg2 38. Rfd1 Qxh2 39. a4 {[%cal Ba2a4,Ba4a5,Ba5a6,Ba6a7][%mdl
32]} Qe2 40. R8d6 h4 {Threatens to win with ...h3.} 41. a5 {aiming for a6.} h3
$2 {[%mdl 8192]} (41... Qf3 $11 {and Black has nothing to worry.}) 42. a6 $18
h2 {Hoping for ...Qe4.} 43. a7 $1 {[%cal Ra7a8]} ({Weaker is} 43. Rd7+ Kg6 $11)
43... Qe8 {...Qa8 is the strong threat.} 44. Rh1 $1 {And now Ra6 would win.}
Qe4 {[#]} 45. Rdd1 ({Inferior is} 45. Rxh2 Qe1+ 46. Ka2 Qa5+ 47. Kb1 Qe1+ 48.
Ka2 Qa5+ {[%mdl 64] Double Attack} 49. Kb1 Qe1+ $11) 45... Qf3 {[#]} 46. Rd7+
$2 (46. b3 $1 $18 Kg6 47. Kb2) 46... Kg6 $11 47. Rxh2 {Weighted Error Value:
White=0.26/Black=0.25} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.18"]
[White "Neiksans, Arturs"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2570"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,46,18,16,20,19,12,17,25,12,0,3,8,16,0,0,0,0,0,0,0,0,0,0,0,0,0,25,6,
15,0,16,0,13,0,20]} 1. e4 {Nielsen,Peter Heine} e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3
Bc5 5. O-O d6 6. c3 a6 7. a4 h6 8. Re1 $1 {The main line 8.Re1 scores better
than 8.Nbd2. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} O-O
9. h3 a5 10. Nbd2 Be6 11. Bb5 Na7 12. d4 Nxb5 13. dxc5 Na7 {[#]} 14. cxd6 $146
({Predecessor:} 14. b3 Re8 15. cxd6 Qxd6 16. Ba3 c5 17. Nc4 Qxd1 18. Raxd1 Bxc4
19. bxc4 b6 20. Nh4 {1-0 (43) Carlsen,M (2882)-So,W (2776) Saint Louis 2019
CBM 192 [Nielsen,Peter Heine]}) 14... Qxd6 15. b3 Rad8 16. Ba3 c5 17. Qe2 b6
18. Nc4 $36 {[%mdl 2048] White has good play.} Bxc4 19. Qxc4 Nc6 20. Qb5 Qc7 {
The position is equal.} 21. Qc4 Qd6 22. Qb5 Qc7 23. Qc4 Qd6 {A rather calm
draw.  Weighted Error Value: White=0.06/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.19"]
[White "Kuybokarov, Temur"]
[Black "Nihal Sarin"]
[Result "0-1"]
[ECO "C70"]
[WhiteElo "2549"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,25,57,34,34,27,29,31,36,27,22,30,41,28,10,18,61,52,59,19,19,0,8,8,
16,16,19,0,21,-33,-19,-19,-10,-25,-21,-18,-12,-32,0,-107,-107,-107,-100,-212,
-228,-267,-252,-300,-293,-29994,-751,-29995,277,-29996,-29997,-29999]} 1. e4 e5
2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5 5. c3 Nge7 6. d4 {C70: Ruy Lopez: 3...a6 4 Ba4,
Norwegian and Delayed Schliemann.} exd4 7. cxd4 Bb4+ 8. Bd2 {White has an edge.
} Bxd2+ 9. Qxd2 d5 10. exd5 Qxd5 11. O-O Be6 12. Nc3 Qh5 13. Ne5 $1 O-O {[#]}
14. Bd1 $146 ({Predecessor:} 14. Bxc6 Nxc6 15. Nxc6 bxc6 16. Na4 Rad8 17. Qc3
Rd6 18. Rae1 Bd5 19. f4 Qg4 20. Rf2 {1/2-1/2 (51) Bologan,V (2684)-Tkachiev,V 
(2639) France 2010}) 14... Qh4 15. Nf3 Qh6 16. Qxh6 gxh6 17. Bc2 Rad8 18. Be4
Rd6 19. Na4 (19. Rfe1 $11) 19... b6 20. Rfc1 Rfd8 21. h3 Kg7 22. b3 R8d7 23.
Bd3 a5 24. Rc3 (24. Bb5 $11) 24... Nxd4 $17 25. Ne5 Nd5 26. Rcc1 (26. Nxd7 $17
{was necessary.} Nxc3 27. Nxc3 Nf3+ {[%mdl 64] Discovered Attack} 28. gxf3 Rxd3
{[%mdl 64] Double Attack} 29. Nxb6 Rxc3 30. Na4) 26... Re7 $19 27. Bf1 {[#]}
Bxh3 $1 {[%mdl 512]} 28. Nc4 (28. Rd1 c5) 28... Rg6 {( -> ...Nf3+)} 29. Rd1 $2
(29. Kh1 $19 Nf4 30. Rd1) 29... Nf3+ 30. Kh1 {[#]} Bxg2+ $1 {[%mdl 512]} 31.
Bxg2 {[#]} Re4 $1 32. Bxf3 (32. Rd4 Rxd4) 32... Rh4# {Weighted Error Value:
White=0.39/Black=0.07} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.20"]
[White "Vitiugov, Nikita"]
[Black "Abasov, Nijat"]
[Result "1/2-1/2"]
[ECO "B66"]
[WhiteElo "2727"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,82,0,60,50,65,71,102,101,101,85,91,35,76,83,72,83,207,208,207,210,
235,233,236,230,227,233,220,221,278,280,289,287,277,286,274,274,231,200,240,
203,250,229,211,0,0,0,0,-85,0,0,0,0,78,78,78,24,24,24,37,0,0,0,50]} 1. e4 c5 2.
Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. Nxc6 bxc6 9.
O-O-O h6 10. Bf4 d5 11. Qe3 Qa5 (11... Bb4 $11) 12. Be2 $14 {B66: Sicilian:
Richter-Rauzer: 7...a6 8 0-0-0 h6.} Bb4 {next ...Bxc3 is good for Black.} 13.
Be5 dxe4 {[#]} 14. Qg3 {White is better.} Bxc3 {[#]} 15. Bxc3 $146 (15. Bc7 {
is more complex.} Bxb2+ 16. Kxb2 Qb4+ 17. Ka1 O-O 18. Bd6) ({Predecessor:} 15.
Bc7 Bxb2+ 16. Kxb2 Qb4+ 17. Ka1 Nd5 18. Qxg7 Qf8 19. Qd4 Bd7 20. Bg3 Rg8 21. c4
{1-0 (37) Ponomariov,R (2673)-Bu,X (2558) Lausanne 2001}) 15... Qg5+ 16. Kb1 ({
White should try} 16. Rd2 $16 Qxg3 17. hxg3) 16... O-O 17. Qxg5 hxg5 18. h4
gxh4 (18... g4 $16 {was worth a try.}) 19. Rxh4 $40 {[%mdl 128] White goes for
the king.} Nd5 {[#]} 20. Bd4 ({Worse is} 20. Rxe4 Nxc3+ 21. bxc3 c5 $11) 20...
f5 21. Bc5 Bb7 22. Bxf8 Rxf8 23. Rdh1 {Black must now prevent Rh8+.} Kf7 24.
Rh8 {And now Rxf8+ would win.} c5 25. Rxf8+ Kxf8 {[%mdl 4096] Endgame KRB-KBN}
26. Rh8+ Ke7 27. Rg8 Kf6 28. Rb8 Bc6 29. Rc8 Ne7 30. Rc7 a5 31. a4 g5 32. Bb5
$2 (32. g3 $18) 32... e3 $1 $11 {[%cal Re3f2]} 33. fxe3 ({But not} 33. Bxc6 $2
e2 $19) 33... Bxg2 34. Kc1 (34. Rxc5 $11 Nd5 35. Bc6) 34... g4 (34... Nd5 $17
35. Rxc5 Nxe3) 35. Kd2 g3 36. Ke2 f4 (36... e5 $11 {keeps the balance.}) 37.
exf4 $16 Nd5 38. Rc8 (38. Rxc5 $16 {Threatens to win with Bc6.} Be4 39. Kf1
Nxf4 40. Rc3) 38... Nxf4+ 39. Ke3 Nd5+ 40. Ke2 {aiming for Rg8.} (40. Kd2 $5 {
[%cal Rc8g8]} Be4 41. Rg8 $16 (41. Rxc5 $2 g2 $19)) 40... Nf4+ 41. Ke3 Nd5+ {
Black escapes into a draw.  Weighted Error Value: White=0.22/Black=0.26}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.21"]
[White "Kovalev, Vladislav"]
[Black "Esipenko, Andrey"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2634"]
[BlackElo "2720"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,60,0,0,0,0,0,0,0,0,-14,0,0,0,0,0,0,0,0,0,-16,21,18,16,7,8,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5.
Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 O-O 9. O-O cxd5 {The position is equal.
} 10. h3 {C47: Scotch Four Knights and Four Knights with 4 g3.} c6 11. Qf3 Bd6
12. Bf4 Be6 {[#]} 13. Rfd1 $146 ({Predecessor:} 13. Rfe1 Rb8 14. b3 Rb4 15. Ne2
Bxf4 16. Nxf4 Qd6 17. c4 Rbb8 18. Rad1 d4 19. c5 {1/2-1/2 (76) Khamrakulov,D 
(2812)-Barp,A (2633) Chess.com INT 2020}) 13... Bxf4 (13... Re8 {is
interesting.} 14. Ne2 Rb8 15. Rab1 c5 16. c4 Bxf4 17. Nxf4 d4) 14. Qxf4 Qb8 15.
Qxb8 Raxb8 16. Na4 Rfc8 17. Ba6 Rc7 18. c4 dxc4 19. Rac1 c5 20. Bxc4 (20. Rc2 {
feels hotter.} Rd7 21. Rdc1 c3 22. Rxc3 Bxa2 23. Nxc5 Rc7 24. Nd3) 20... Bd7 $1
{[%cal Rd7a4] [#]} 21. Nxc5 Rxc5 22. Bxf7+ $1 Kxf7 23. Rxc5 Rxb2 24. Rc7 Rxa2
25. Rdxd7+ Nxd7 26. Rxd7+ $11 {KR-KR} Kf6 27. g4 h6 28. Kg2 g5 29. Rd6+ Kg7 $1
30. Rd7+ Kg6 {A rather calm draw.  Weighted Error Value: White=0.03/Black=0.03}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.22"]
[White "Durarbayli, Vasif"]
[Black "Dubov, Daniil"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2629"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,68,0,0,0,0,0,0,0,0,0,0,-13,-18,-7,-12,-22,-17,-35,-23,-110,-99,-132,
-129,-180,-175,-229,-174,-230,-230,-314,-306,-687,-687,-707,-702,-668,-696,
-692,-692,-676,-669,-700,-521,-725,-741,-722,-710,-1229,-1227,-1175,-1089]} 1.
e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. O-O Be7 7. e5 Ne4 8. Nxd4
O-O 9. Nf5 d5 10. Nxe7+ Nxe7 11. c3 {C84: Closed Ruy Lopez: Unusual White 6th
moves.} Nc5 12. Bc2 Bf5 13. Na3 {The position is equal.} Qd7 14. Be3 Ne6 {[#]}
15. f4 $146 ({Predecessor:} 15. Qh5 Bg6 16. Qh3 f6 17. exf6 Rxf6 18. Bd4 Rf7
19. Be5 Bxc2 20. Nxc2 Ng6 21. Rae1 Nxe5 22. Rxe5 {1/2-1/2 (57) Zelcic,R (2530)
-Plenca,J (2475) Zagreb 2018}) 15... f6 16. exf6 Rxf6 17. Qd2 Raf8 18. Rad1 h5
19. Bxf5 (19. Bb3 $11 {remains equal.}) 19... Nxf5 $17 {Black converts the
advantage convincingly.} 20. Nc2 {[#]} c6 $1 21. Bf2 {[#]} (21. Bd4 $17 Nfxd4
22. Nxd4) 21... Nd6 $1 $19 22. Bg3 (22. Be3 $142) 22... Nc4 23. Qc1 (23. Qe2
$142 Nxb2 24. Rb1) 23... h4 $1 {[%cal Rh4g3][%mdl 64] Deflection} 24. Bxh4 Nxf4
({Less strong is} 24... Rxf4 25. Bg3 $15) 25. Rf2 (25. Rxf4 Rxf4 26. Bg3) 25...
Qg4 {And now ...Nh3+ would win.Black is clearly winning.} 26. Bxf6 Nh3+ {
[%mdl 64] Double Attack, Zwischenzug} 27. Kf1 Nxf2 28. Kxf2 Rxf6+ 29. Kg1 Qe2
30. Re1 Qf2+ 31. Kh1 {[#]} Nxb2 $1 {[%mdl 512] aiming for ...Nd3!} 32. h3 {[#]}
(32. Qe3 Qxc2) 32... Rg6 $1 {[%csl Gg6][%cal Rf2g2]} 33. g4 (33. Ne3 Nd3) 33...
Qf3+ {[%mdl 64] Double Attack} 34. Kh2 {[#]} Rh6 $1 {Weighted Error Value:
White=0.59/Black=0.02} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.23"]
[White "Alekseenko, Kirill"]
[Black "Movsesian, Sergei"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2710"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,55,16,22,13,22,18,16,26,15,23,14,17,9,-27,-22,-31,-29,-52,-66,-67,-45,
-69,-61,-140,-131,-163,-143,-116,-140,-172,-133,-133,-131,-125,-17,-41,21,0,0,
0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. Nf3 Bxc5 6. a3 {
B12: Caro-Kann: Advance Variation.} Ne7 7. b4 Bb6 8. Bb2 O-O 9. Nbd2 a5 10. Bd3
{Strongly threatening Bxh7+!} Ng6 {[#]} 11. bxa5 $146 ({Predecessor:} 11. g3
Qc7 12. c4 axb4 13. axb4 Rxa1 14. Qxa1 dxc4 15. Nxc4 Qc6 16. Ke2 Bc7 17. Rc1 {
1-0 (41) Balakrishnan,P (2508)-Loiacono,A (2326) Spilimbergo 2021}) 11... Rxa5
12. Nb3 Ra8 13. h4 Nc6 14. h5 Nf4 15. h6 g6 (15... Nxg2+ 16. Kf1 $16) 16. Bb5 {
[#]} ({White should play} 16. Kf1 $15) 16... f6 $1 $17 17. g3 fxe5 {And now ...
Ng2+ would win.} 18. gxf4 Rxf4 19. Rh3 {[#]} (19. Nxe5 $2 Nxe5 20. Bxe5 Re4+
21. Kd2 Rxe5 $19) 19... e4 $1 {aiming for ...e5.} 20. Qd2 e5 21. Nxe5 Rxf2 (
21... Bxf2+ $17 22. Kd1 e3) 22. Qc3 Qf6 (22... Qg5 $15 23. Qg3 Qxg3 24. Rxg3
Rxc2 25. Bxc6 bxc6) 23. Nxc6 {The position is equal.} Rf1+ $1 24. Kd2 $1 (24.
Bxf1 $2 {too greedy.} Qf2+ 25. Kd1 Bg4+ 26. Rf3 Bxf3+ 27. Qxf3 exf3 $19) 24...
Rf2+ 25. Ke1 Rf1+ $1 26. Kd2 $1 (26. Bxf1 $2 {loses.} Qf2+ 27. Kd1 Bg4+ 28. Rf3
Bxf3+ 29. Qxf3 exf3 $19) 26... Rf2+ 27. Ke1 Rf1+ $1 28. Kd2 $1 {And White is
the lucky defender.  Weighted Error Value: White=0.11/Black=0.11} (28. Bxf1 $2
{perishes.} Qf2+ 29. Kd1 Bg4+ 30. Rf3 Bxf3+ 31. Qxf3 exf3 $19) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.24"]
[White "Svidler, Peter"]
[Black "Shevchenko, Kirill"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2694"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,115,0,0,6,12,11,10,16,18,30,16,9,12,9,9,0,0,-13,-19,-15,-26,-57,0,0,
0,0,0,0,0,0,0,0,0,-2,-4,-6,-4,-22,-24,-21,-22,-20,-11,-20,-11,-20,-19,-35,-8,
-8,-8,-8,-8,-34,-8,-8,-9,-8,-12,-12,0,-12,-12,-12,-8,-8,-8,-8,-8,-8,-8,-18,-15,
-15,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-8]} 1. e4 c5 2. Nf3
Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Re1 O-O 7. d4 d5 8. e5 Ne4 9. Bxc6 bxc6
10. Be3 $1 {[%mdl 4] now scores much better than the old 10.Nbd2. B31:
Sicilian: 2...Nc6 3 Bb5 g6.} Rb8 11. Qc1 cxd4 12. cxd4 f6 {[#]} 13. Nbd2 $146 (
{Predecessor:} 13. exf6 exf6 14. Nbd2 Bf5 15. Qxc6 Rxb2 16. Nb3 Ng5 17. Nxg5
fxg5 18. Rec1 Qf6 19. Qxd5+ {1/2-1/2 (43) Perez Gormaz,M (2413)-Kotronias,V 
(2517) Banja Vrujci 2021}) 13... Bf5 14. Nb3 Qd7 15. exf6 exf6 16. Nh4 Be6 17.
f3 {[#]} g5 $1 18. fxe4 dxe4 19. Bf2 {Threatens to win with Nc5.} Bd5 (19...
gxh4 $15 20. Rxe4 h3) 20. Nc5 $11 Qc8 21. Nxe4 {Hoping for Nd6.} gxh4 22. h3 f5
23. Nc3 f4 24. Nxd5 cxd5 25. Qxc8 Rfxc8 26. Re2 Kf7 27. Rd1 Bf6 28. Be1 Kg6 29.
Kf2 Rc4 30. Kf3 Kf5 ({Wrong is} 30... Bxd4 $2 31. b3 $18 (31. Bxh4 Rb5 $11))
31. b3 Rc7 ({Don't play} 31... Rxd4 32. Rxd4 Bxd4 33. Re7 $14) 32. Bd2 Rc2 (
32... Rg8 $5 {[%cal Rg8g3]} 33. Bxf4 Rc3+ 34. Re3 Rc2 35. g4+ hxg3 36. Bxg3
Rxa2 $15) 33. Bxf4 Rxe2 34. Bxb8 Rxa2 {[%mdl 4096] Endgame KRB-KRB} 35. Rd3 a6
36. Bf4 {The position is equal.} Rc2 37. Be3 Be7 38. Bf2 Bg5 39. Be1 Rc1 40.
Bf2 Rf1 41. b4 Bf4 {Strongly threatening ...Bg3.} 42. Ke2 {[#]} Ke4 $1 {
And now ...Rxf2+! would win.} 43. Ra3 Rb1 44. Rxa6 Rb2+ 45. Kf1 Rb1+ (45... Bg5
{with more complications.} 46. Re6+ Kd3 47. Re1 h6 48. Ra1 Rxb4 49. Rd1+ Kc4)
46. Ke2 Bg3 (46... Rxb4 {keeps more tension.} 47. Re6+ Kf5 48. Re7 Rb2+ 49. Kf3
Rb3+) 47. Bxg3 hxg3 {KR-KR} 48. Ra3 Rb2+ 49. Kf1 Rb1+ 50. Ke2 Rxb4 51. Rxg3
Rb2+ 52. Kf1 Kxd4 53. Rg7 h6 54. Rg6 h5 55. Rg5 h4 56. g3 hxg3 57. Rxg3 Kc4 58.
Ke1 {Weighted Error Value: White=0.03/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.25"]
[White "Navara, David"]
[Black "Sethuraman, S.P.."]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2691"]
[BlackElo "2620"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,69,27,47,0,17,0,15,21,21,0,0,0,0,-20,0,-10,-6,-14,-6,0,0,-2,0,-16,
-25,-33,-17,-39,70,58,124,110,100,98,179,177,181,185,156,163,164,172,211,205,
204,212,209,209,301,268,538,528,570,554]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4
Nf6 5. O-O b5 6. Bb3 Bc5 7. a4 Rb8 8. c3 d6 9. d4 Bb6 10. a5 {C78: Ruy Lopez:
Archangelsk and Möller Defences.} Ba7 (10... Bxa5 $2 11. dxe5 (11. d5 Ne7 $18)
11... dxe5 12. Qxd8+ Kxd8 13. Bd5 $18 (13. Bxf7 Bb6 $16)) 11. h3 Bb7 12. Re1 {
The position is equal.} O-O 13. Be3 exd4 (13... Nxe4 $6 14. d5 $16) 14. cxd4 {
White wants to play d5.} Nb4 {14...Ne7 gains popularity.} (14... Nxe4 15. d5
$18) 15. d5 {[#]} c5 $146 ({Predecessor:} 15... Bxe3 16. Rxe3 c5 17. Nc3 Re8
18. Qd2 Nd7 19. Bc2 Nxc2 20. Qxc2 Bc8 21. Ne2 Qf6 {1/2-1/2 (69) Tabatabaei,M 
(2824)-Schitco,I (2654) Chess.com INT 2020}) 16. dxc6 Bxe3 17. cxb7 Bc5 18. Nc3
Rxb7 19. Qd2 Re7 20. Rad1 {[#] aiming for e5.} Nc6 21. Qg5 Nxa5 22. Bc2 {
e5 is the strong threat.} Qb6 (22... Rd7 $15) 23. Qh4 $1 $14 {Black must now
prevent Nd5.} Rc8 (23... Rc7 $14) 24. e5 $16 dxe5 25. Bf5 $36 {[%mdl 2048]
White is in control.} Rce8 (25... Rc6 $16) 26. Nd5 $18 {[#] Intending Nxf6+
and mate.} Bxf2+ 27. Qxf2 Nxd5 28. Rxd5 Qxf2+ 29. Kxf2 Nc4 30. b3 Na5 31. Bd7 (
{Don't play} 31. Rdxe5 Rxe5 32. Rxe5 (32. Nxe5 Nxb3 33. Nc6 Rxe1 $16) 32...
Rxe5) 31... Rd8 32. Nxe5 Nxb3 (32... Kf8 $142 33. Ra1 Nxb3 34. Rxa6 g6) 33.
Red1 Rf8 $2 (33... Na5 34. Bxb5 {[%mdl 64] Discovered Attack} Rxd5 35. Rxd5 g6
36. Bxa6 Nb7) 34. Nc6 Re4 {Now ...Ra4 and Black clings on.} 35. Rb1 {Weighted
Error Value: White=0.06/Black=0.32} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.26"]
[White "Erigaisi Arjun"]
[Black "Mamedov, Rauf"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "2634"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,60,41,55,47,64,54,48,18,19,19,14,35,34,28,39,48,47,57,52,56,43,56,21,
67,31,37,35,41,43,52,18,16,16,17,25,22,13,13,12,12,0,0,0,0,0,0,-8,0,0,0]} 1. d4
d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. dxc5 d4 7. Na4 Bxc5 {[%mdl 64]
[#] Decoy. D32: Tarrasch Defence: Sidelines and lines without g3.} 8. Nxc5 {
Hoping for Nb3.} Qa5+ 9. Bd2 Qxc5 {White is slightly better.} 10. Rc1 Qb6 11.
e3 dxe3 12. Bxe3 Qb4+ 13. Bd2 Qe7+ 14. Be2 {0-0 is the strong threat.} Nf6 15.
O-O {Black must now prevent Bf4.} O-O 16. Re1 Qd6 {[#]} 17. Bb5 $146 ({
Predecessor:} 17. Qa4 Be6 18. Bf4 Qb4 19. Qxb4 Nxb4 20. a3 Nbd5 21. Bg3 Rac8
22. Nd4 a6 23. Nxe6 fxe6 {1/2-1/2 (36) Pisk,P (2389)-Orsag,M (2393) Czech
Republic 2013}) 17... Bg4 18. Bc3 (18. Bxc6 $5 bxc6 19. Bg5 Qxd1 20. Rexd1 $14
(20. Rcxd1 Nd5 $11)) 18... Qxd1 19. Rexd1 Ne4 20. Bxc6 bxc6 21. Bd4 Rfd8 22.
Be3 Rxd1+ 23. Rxd1 c5 24. Rc1 {The position is equal.} Be6 $1 25. b3 a5 26.
Bxc5 Nxc5 27. Rxc5 a4 28. bxa4 Rxa4 29. Rc2 Rxa2 30. Rxa2 Bxa2 {Weighted Error
Value: White=0.08/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.27"]
[White "Sargissian, Gabriel"]
[Black "Kravtsiv, Martyn"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2664"]
[BlackElo "2625"]
[Annotator "TA"]
[PlyCount "131"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,131,18,-6,17,19,22,25,15,24,32,7,59,63,80,52,87,87,139,130,126,89,
102,105,149,146,166,141,146,140,140,141,125,119,139,112,134,132,139,131,131,
132,166,175,257,124,117,116,122,125,131,108,107,104,112,108,129,114,115,115,
135,133,137,137,137,137,180,175,170,165,183,183,203,224,253,250,227,257,257,
255,248,193,234,236,240,236,279,268,276,276,268,256,256,229,205,196,279,300,
279,272,328,325,568,539,495,390,396,382,520,509,501,498,550,519,552,530,934,
931,1264,1195,1079,974]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Nd2 O-O 6.
Ngf3 dxc4 7. Qc2 (7. a3 $5 {[%cal Ra3b4]} Bxd2+ 8. Bxd2 $11) 7... b5 {E04:
Open Catalan: 5 Nf3.} 8. a4 Bb7 9. axb5 Qd5 {White has an edge.} 10. O-O Qxb5
11. Qxc4 {[#]} Qxc4 $146 (11... a6 $11) ({Predecessor:} 11... Qb6 12. Qc2 Nbd7
13. Nc4 Qb5 14. b3 Be4 15. Qa2 a5 16. Bd2 Nb6 17. Rfc1 Bd5 {1/2-1/2 (27)
Stillger,B (2261)-Kozak,A (2376) Basel 2017}) 12. Nxc4 $14 Nbd7 13. Bf4 Nd5 14.
Bd2 Be7 ({Black should try} 14... Rfc8) 15. Rfc1 $1 $16 Rfc8 16. Ne1 c5 17. Na5
Rab8 18. b4 {[%cal Bb2b4,Bb4c5][%mdl 32]} Ba6 ({Avoid the trap} 18... cxb4 $2
19. Rxc8+ Bxc8 20. Nc6) 19. bxc5 {aiming for Nc4.} Bxe2 20. Nc4 Rb7 21. Bxd5
exd5 22. Ne3 {Strongly threatening c6.} Nf6 23. f3 Kf8 24. Kf2 Bb5 25. N1c2 Bd8
26. Ra3 Bc6 27. Rca1 Rcb8 (27... a5 $142 28. Bxa5 Bxa5) 28. Rxa7 (28. Ra6 $18 {
and the rest is easy.} Be8 29. Rxa7) 28... Rxa7 29. Rxa7 Ra8 30. Rxa8 Bxa8 31.
Nf5 Ng8 32. Bf4 g6 33. Nfe3 Ke7 34. Nb4 Ke6 35. Bd6 Bg5 36. Nec2 Nf6 37. Bf4
Bxf4 38. gxf4 {[%mdl 4096] Endgame KBN-KNN} Ng8 39. Na3 Ne7 40. Nb5 {Black
must now prevent Nc7+.} Kd7 41. Nd6 Ke6 42. Nd3 Bc6 43. Ne5 $1 f6 {[#]} 44. f5+
$1 gxf5 45. Nd3 Ba4 46. Nf4+ Kd7 47. Nh5 Ke6 48. Ke3 Bc2 49. Kd2 Ba4 50. Ng7+
Kd7 51. Ndxf5 ({Resist} 51. Ngxf5 $6 Nc6 $16) 51... Nc6 52. Nh5 Ke6 {[#]} 53.
Nhg3 Bb5 (53... Bb3 $142 54. Ne3 Nxd4) 54. Kc3 $18 Ba6 55. Nd6 Ke7 56. f4 Ke6 (
56... Kd7 57. h3 Ne7) 57. Ne8 Bc4 58. Ng7+ Kd7 59. N7f5 Na7 60. Nd6 {White is
clearly winning.} Ba6 61. Ngf5 Be2 62. Nh6 Nc6 {If Black can now play ...Ne7
this consolidates a bit.} 63. Ng8 h5 64. f5 Bf3 65. Nxf6+ Ke7 66. Nh7 {
Weighted Error Value: White=0.08/Black=0.23} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.28"]
[White "Grandelius, Nils"]
[Black "Zvjaginsev, Vadim"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2662"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,80,18,20,20,12,13,15,5,0,0,0,0,0,0,0,0,-39,-26,-32,-12,-23,-19,-87,
-70,-40,-35,-31,-25,-53,-61,-53,-16,-21,0,-56,-40,-35,-24,-41,-35,-25,-36,-35,
-35,-34,-29,-25,-35,-161,-168,-157,-164,-158,-164,-171,-9,-21,0,-144,-75,-80,
-90,-132,-133,-132,-48,-56,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7
5. d3 Nf6 6. Nc3 O-O {B31: Sicilian: 2...Nc6 3 Bb5 g6.} 7. e5 Ne8 8. Bxc6 bxc6
9. Bf4 f6 10. Re1 fxe5 11. Bxe5 d6 12. Bxg7 Nxg7 {[#]} 13. Ne4 $146 ({
Predecessor:} 13. d4 Bg4 14. dxc5 Bxf3 15. gxf3 d5 16. Qe2 Rf7 17. Qe5 Qd7 18.
Rad1 Raf8 19. Rd3 {0-1 (62) Timman,J (2528)-Reinderman,D (2575) Amstelveen 2019
}) 13... Bg4 14. Ned2 e5 15. c3 Rb8 16. b3 (16. Qa4 $11 {keeps the balance.}
Qd7 17. b3) 16... Ne6 $17 17. h3 Bxf3 18. Nxf3 Qf6 19. Qd2 Nf4 {Strongly
threatening ...Nxg2!} 20. Re3 Nd5 21. Re4 Nf4 {Hoping for ...Nxg2!} 22. Re3 d5
23. Rae1 d4 (23... Rbd8 {is interesting.} 24. Qc2 d4 25. cxd4 cxd4 26. Rxe5
Nxg2 27. Kxg2 Qxf3+ 28. Kg1 Qxh3 29. R1e4 Qf3) 24. cxd4 cxd4 25. Rxe5 {[#]}
Nxg2 $1 {[%mdl 64] Discovered Attack, Remove Defender} 26. Kxg2 Qxf3+ 27. Kg1
Qxh3 {aiming for ...Qg4+.} 28. R1e4 Rf7 $36 {[%mdl 2048] Black is pushing.} 29.
Re8+ (29. Qe2 $15) 29... Rxe8 $19 30. Rxe8+ {[%mdl 4096] Endgame KQR-KQR} Kg7 {
...Rf5 is the strong threat.} 31. Qe2 {[#]} Rf5 {[%cal Rf5g5] ( -> ...Rg5+)}
32. Re5 {[#]} Rf4 (32... Kf6 $1 $19 33. Rxf5+ Qxf5) 33. Re4 $11 {[%cal Re4f4]}
Rf5 (33... Rxe4 $11 34. Qxe4 Qd7) 34. Re5 $1 $17 Qf3 (34... Kf6 $142 35. Rxf5+
Qxf5) 35. Qxf3 Rxf3 {KR-KR} 36. Rc5 Rxd3 37. Rxc6 Rc3 (37... h5 $17 38. Ra6 h4
39. Rxa7+ Kf6) 38. Ra6 $1 $15 Rc7 ({Better is} 38... h5 $15) 39. Rd6 $11 Rc2
40. a4 Rb2 {Weighted Error Value: White=0.13/Black=0.21} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.29"]
[White "Moussard, Jules"]
[Black "Cheparinov, Ivan"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "2632"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,81,16,35,33,13,19,0,30,20,13,15,21,0,0,0,14,11,41,33,35,35,52,26,28,
17,45,6,18,0,68,64,77,75,75,66,62,54,73,63,100,60,141,98,139,141,154,148,150,
148,270,272,269,267,262,268,261,252,451,513,507,505,1647,1264,12838,12839,
12839,12839,29991,29992]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5
6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 $1 {[%mdl 4] outshines the older 8.Be2.} Nd5 {
C58: Two Knights: 4 Ng5 d5 5 exd5 Na5 sidelines.} 9. Nf3 Bd6 10. Nc3 Nf4 {
The position is equal.} 11. O-O Nxd3 12. cxd3 O-O 13. b3 $5 {[%mdl 4] An
interesting side line.} Re8 14. Re1 c5 15. Ba3 {[#]} f6 $146 ({Predecessor:} 
15... Nb7 16. Rc1 Qa5 17. Bb2 Bg4 18. h3 Bh5 19. Ne4 f6 20. Bc3 Qa6 21. g4 Bf7
{1-0 (40) Sargsyan,S (2594)-Pranesh,M (2425) Moscow 2020}) 16. Ne4 {d4 is the
strong threat.} Nb7 17. Rc1 Bf8 18. Rc3 ({Of course not} 18. Nxc5 Qa5 $17)
18... Qa5 19. Qc1 {[%cal Re4c5]} Be6 20. h3 {[%cal Re4c5]} Rac8 21. Nh2 Red8 (
21... Qb5 $11) 22. f4 $1 $14 Qb6 23. fxe5 f5 24. Ng5 Bd5 25. d4 h6 26. Ngf3 Be6
$1 {Black is now going downhill.} 27. Qb2 g5 (27... cxd4 $14 28. Rxc8 d3+ 29.
Kh1 Rxc8 30. Bxf8 Rxf8) 28. Kh1 g4 29. hxg4 fxg4 30. dxc5 Nxc5 {[#] aiming for
...Nd3!} 31. d4 $1 Nd7 (31... Na4 $16 32. bxa4 Qxb2 33. Bxb2 gxf3) 32. Rxc8 $18
Rxc8 33. Bxf8 Nxf8 {[#]} 34. d5 $1 gxf3 35. dxe6 fxg2+ $2 (35... f2 {is a
better defense.} 36. Rf1 Nxe6) 36. Qxg2+ Kh8 {[#]} 37. e7 {[%cal Re7f8]} Ne6 (
37... Nh7 $142 38. Rg1 Ng5) 38. Qf3 Qb4 39. Qf6+ {[%mdl 64] Double Attack} Kh7
40. Qf7+ Ng7 41. Rg1 {[%csl Gg1][%cal Rf7g7] Weighted Error Value: White=0.08/
Black=0.44} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.30"]
[White "Anton Guijarro, David"]
[Black "Sindarov, Javokhir"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2658"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,83,16,10,43,37,43,42,50,51,47,31,53,40,61,60,98,63,68,25,54,14,9,0,0,
0,0,0,0,5,7,0,169,154,150,-22,-22,-43,0,0,629,611,879,787,681,582,594,561,483,
153,309,131,144,159,125,138,131,107,162,64,427,417,702,540,1586,1602,1544,1510,
1407,1325]} 1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Be2 O-O 5. O-O d6 6. c4 Nbd7 7.
Nc3 e5 8. b4 Re8 9. Bb2 e4 {E61: King's Indian: Early deviations for White,
including Smyslov System.} 10. Nd2 Nf8 {[%cal Bd7f8,Bf8h7,Bh7g5,Bg5f3][%mdl 32]
} 11. a4 h5 {White is slightly better.} 12. a5 N8h7 13. a6 bxa6 14. Qc2 {
[%cal Rc3e4]} Ng5 {[#]} 15. Ra5 $146 ({Predecessor:} 15. h4 Ngh7 16. Ncxe4 Nxe4
17. Nxe4 Qxh4 18. Nd2 Qe7 19. Bf3 Rb8 20. b5 h4 21. Bc6 {1-0 (47) Khurtsidze,N
(2469)-Lubbe,M (2225) Ekaterinburg 2007}) 15... Bf5 16. Rfa1 (16. Rxa6 Nf3+ 17.
Kh1 (17. gxf3 exf3 {[%mdl 64] Discovered Attack} 18. Qd1 fxe2 $17) 17... Ng4
$17) 16... Rb8 17. b5 Ng4 {With the idea ...Nf3+!} 18. Bxg4 (18. Rxa6 Nf3+ 19.
Bxf3 (19. gxf3 $2 exf3 {[%mdl 64] Discovered Attack} 20. Qxf5 gxf5 $19) 19...
exf3 $17) 18... hxg4 19. Nd5 (19. Rxa6 $6 Bxd4 20. Nd5 (20. exd4 e3 $16) 20...
Be5 $16) 19... Nf3+ 20. gxf3 gxf3 21. Nf1 (21. Rxa6 $2 Qg5+ 22. Kf1 Bh3+ 23.
Ke1 Qg1+ 24. Nf1 Bxf1 $19) 21... Qh4 {aiming for ...g5.} 22. Ng3 {Kh1 is the
strong threat.} g5 {( -> ...Qh3)} 23. Kh1 (23. Rxa6 $2 Qh3 24. Ne7+ Rxe7 25.
Nxf5 Qg2#) 23... Bg4 $2 (23... Bh3 $1 $11) 24. Nxc7 $18 {[%mdl 64] Double
Attack} (24. Nxe4 $2 Re6 $19) 24... Re7 {[#]} 25. Rxa6 $2 (25. Nd5 $2 Re6 $19)
({White must play} 25. Ba3 $1 $16 {[%cal Ra3d6]} Rb6 26. Rxa6 (26. Nd5 Re6 $19)
26... Rxc7 27. Bxd6 Rxa6 28. bxa6) 25... f5 $11 26. c5 $1 {[%cal Rc5d6]} Rxc7
27. Rxd6 {Threatens to win with Qb3+.} (27. Rxa7 $2 Rxa7 28. Rxa7 Qh3 $19)
27... Bh8 $2 {[%mdl 8192]} (27... Re7 $11) 28. Qc4+ $18 Kf8 29. Rg6 {Qg8+
would kill now.} Qh7 30. Qe6 {Black must now prevent c6.} Qf7 {intending ...
Qxe6.} 31. Qd6+ Qe7 {Black hopes to continue with ...Qxd6.} 32. Ra5 $2 $40 {
[%mdl 128] Black is in trouble.} (32. Qa6 $18) 32... Kf7 $2 (32... f4 $16 {
might work better.} 33. Rxg5 (33. exf4 Qxd6 34. Rxd6 gxf4 $16) 33... Qxd6 34.
cxd6 Rc2) 33. Qxe7+ (33. Qa6 $18 {is more deadly.}) 33... Rxe7 $16 {[#]} 34.
Rga6 {[%cal Ra6a7]} f4 {[#]} 35. Nf1 ({Much worse is} 35. Rxa7 $6 fxg3 36.
Rxe7+ Kxe7 $11) 35... Bh3 36. Kg1 Bf6 (36... Bxf1 $16 37. Kxf1 Bf6) 37. Bc3 ({
Resist} 37. Rxa7 $6 Bxf1 38. Kxf1 Rh8 $14) (37. Nd2 $18) 37... Bd7 $2 {[%mdl
8192]} (37... Bxf1 $14 38. Kxf1 g4 39. Rxa7 (39. exf4 e3 $16) 39... fxe3 40.
fxe3 Bg5) 38. c6 $18 Be6 (38... Bc8 $142 39. Rxa7 Rxa7 40. Rxa7+ Ke8) 39. Rxa7
{White is clearly winning.} Ke8 40. Ra8 Rxa8 41. Rxa8+ Kf7 42. b6 {Weighted
Error Value: White=0.38/Black=0.81} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.31"]
[White "Cori, Jorge"]
[Black "Indjic, Aleksandar"]
[Result "0-1"]
[ECO "A61"]
[WhiteElo "2655"]
[BlackElo "2612"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,98,38,45,25,16,22,26,36,38,23,34,31,70,60,84,77,77,84,89,62,63,63,64,
50,62,53,116,119,118,119,116,103,133,84,89,91,90,92,131,82,93,95,84,89,91,88,
138,102,238,203,341,337,350,350,673,668,610,85,92,-194,-210,-140,-77,-477,-478,
-483,-474,-467,-421,-485,-476,-454,-454,-29966,-29966,-29967,-29968,-29967,
-29971,-29970,-29971,-29971,-29972,-29984,-29985,-29985,29981]} 1. d4 Nf6 2. c4
e6 3. Nf3 c5 4. d5 d6 5. Nc3 exd5 6. cxd5 g6 7. Bf4 Bg7 8. h3 {A61: Modern
Benoni: Nf3 without early e4.} O-O 9. e3 Na6 $1 {9...Na6 is better than 9...a6.
} 10. Bxa6 {White has an edge.} bxa6 11. Rc1 Rb8 12. b3 {[#]} h6 $5 $146 {
[%mdl 8] New and interesting.} ({Predecessor:} 12... Nh5 13. Bh2 f5 14. O-O a5
15. Re1 Rb4 16. Nd2 f4 17. Nce4 fxe3 18. fxe3 Nf6 19. Nxd6 Nxd5 {1/2-1/2 (44)
Georgiadis,N (2525)-Papp,G (2603) Germany 2019}) 13. O-O g5 14. Bh2 a5 15. Nd2
Ba6 16. Nc4 Bxc4 17. bxc4 Qe7 18. Rb1 Nd7 19. Qc2 Ne5 (19... Bxc3 $14 20. Qxc3
Nb6) 20. Ne4 $16 {[%cal Bc3e4,Be4g3,Bg3f5][%mdl 32]} Rxb1 21. Rxb1 f5 22. Ng3
f4 23. Nf5 Qf6 24. e4 (24. exf4 gxf4 25. Nxg7 Qxg7 $14) 24... Ng6 25. g3 Qe5
26. gxf4 gxf4 27. Kh1 Ne7 {[%cal Re7f5] [#]} 28. Bxf4 $1 Qxf4 29. Nxe7+ Kf7 30.
Rb7 {White threatens e5 and mate.} Qf3+ (30... Be5 $16 31. Nc6+ {[%mdl 64]
Double Attack} Kg8 32. Nxe5 Qxe5) 31. Kg1 $18 {e5 would kill now.} Bd4 (31...
Be5 {might work better.}) 32. Nf5+ {[%mdl 64] Double Attack} (32. Rxa7 $2 Kg7
$19) 32... Kf6 33. Rg7 {Threatens to win with Qd2!} ({Don't go for} 33. Rxa7 $2
Rg8+ 34. Ng7 (34. Kf1 {is a self mate.} Qg2+ 35. Ke1 Qg1+ 36. Ke2 Qxf2+ 37. Kd3
Rg3+ {[%mdl 64] Deflection} 38. Nxg3 Qe3#) 34... Rxg7+ 35. Rxg7 Kxg7 $19) 33...
Qxh3 $2 (33... Be5 34. Rg6+ (34. Rxa7 $2 Rg8+ 35. Rg7 Rxg7+ 36. Nxg7 Kxg7 $19)
34... Kf7) 34. Rg3 Qh5 {Black hopes to continue with ...Be5.} 35. Qd2 $2 (35.
Kg2 $18 {and White stays clearly on top.}) 35... Rb8 $16 {( -> ...Rb1+)} 36.
Ne3 $2 {[%mdl 8192] [#]} (36. Qe1 $16) 36... Rb1+ $1 $19 37. Nf1 Be5 $40 {
[%mdl 128] White is in trouble.} (37... Ke5 $142 {Strongly threatening ...Rb2.}
38. Qd3 Rd1) 38. Kg2 $2 {[%mdl 8192] [#]} (38. Qd3 $17 {was the crucial
defense.} Bxg3 39. Qxb1) 38... Rxf1 $1 {[%mdl 512]} 39. Kxf1 {Hoping for Rg2.}
Bxg3 40. fxg3 {[%mdl 4096] Endgame KQ-KQ} Qh1+ {[%mdl 64] Double Attack} 41.
Kf2 {Threatening Qf4+.} Qh2+ 42. Ke1 Qxg3+ 43. Kd1 (43. Kf1 $19 Ke5 44. Qxa5)
43... Qg4+ {Black mates.} 44. Kc2 Qxe4+ 45. Kc3 Qd4+ 46. Qxd4+ cxd4+ 47. Kxd4
h5 48. c5 dxc5+ 49. Kxc5 Ke5 $4 {[%mdl 40960] Weighted Error Value: White=0.69/
Black=0.21. Sensor Board Error (Ke4/e5)?} (49... h4 {and all is fine.} 50. d6
h3 51. d7 Ke7 52. Kc6 Kd8 53. Kc5 h2 54. Kd4 h1=Q 55. Ke5 Kxd7 56. Kf4 Qe1 57.
Kf3 Kd6 58. Kg4 Ke5 59. Kf3 Kf5 60. a4 Qd2 61. Kg3 Qe2 62. Kh3 Kf4 63. Kh4 Qh2#
) 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.32"]
[White "Pichot, Alan"]
[Black "Volokitin, Andrei"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2628"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,43,-20,-25,-29,-20,-19,-30,-27,-32,-33,-32,-34,-27,-7,-25,0,0,0,-12,
0,0,0,-14,0,0,7,-36]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. d3
b5 7. Bb3 d6 8. Be3 Bxe3 9. fxe3 Na5 10. Nc3 c6 {C77: Ruy Lopez: 3...a6 4 Ba4
Nf6, unusual lines.} 11. Qe1 O-O 12. Qg3 {[#]} Ra7 $146 {Black has an edge.} ({
Predecessor:} 12... Nxb3 13. axb3 a5 14. h3 h6 15. Nh4 Re8 16. Nf5 Bxf5 17.
Rxf5 Re6 18. Ne2 a4 19. bxa4 Rxa4 {1/2-1/2 (40) Trzeciak,R (2171)-Glaser,K 
(2284) ICCF email 2016}) 13. Nd2 Re8 14. Rf2 Nxb3 15. axb3 Nh5 16. Qf3 Qg5 {
[#] aiming for ...Bg4.} 17. h3 {The position is equal.} Nf6 18. Kh2 Qh6 {
Hoping for ...Ng4+.} 19. Kg1 Qg5 20. Kh2 Qh6 {White must now prevent ...Ng4+.}
21. Kg1 Qg5 22. Kh2 {Weighted Error Value: White=0.04/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.33"]
[White "Yakubboev, Nodirbek"]
[Black "Sarana, Alexey"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2621"]
[BlackElo "2649"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,60,45,33,19,38,7,0,0,6,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. c4 c6 6. Qb3 O-O
7. Nc3 Qb6 8. O-O Bf5 9. Ne5 Rd8 10. cxd5 Qxb3 11. axb3 cxd5 12. Bg5 {[#] D78:
Fianchetto Grünfeld: 6 0-0 c6.} Nc6 $146 ({Predecessor:} 12... Nbd7 13. Nxd7
Rxd7 14. Bxf6 Bxf6 15. Nxd5 Bxd4 16. Ra4 Bc5 17. Rc1 Rc8 18. Rac4 b6 19. b4 Be6
20. e4 {1-0 (20) Andersen,M (2504)-Nilssen,J (2300) Ballerup 2016}) 13. Nxc6
bxc6 {The position is equal.} 14. Ra6 Rdc8 15. Rfa1 Rab8 16. R1a3 Nd7 17. Bxe7
Bxd4 18. Bd6 Rb7 19. e3 Bc5 20. Bxc5 Nxc5 21. Rxa7 Rxa7 22. Rxa7 Nxb3 23. e4
dxe4 24. Bxe4 Be6 25. h4 Nd4 26. Ra4 (26. Rb7 {is more complex.} Rd8 27. Kg2 c5
28. Rb6 c4 29. Nb5) 26... c5 27. Ra8 Rxa8 28. Bxa8 Kf8 29. Kf1 Ke7 30. Ke1 f5 {
A rather calm draw.  Weighted Error Value: White=0.03/Black=0.00} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.34"]
[White "Ganguly, Surya Shekhar"]
[Black "Swiercz, Dariusz"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2617"]
[BlackElo "2647"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,70,16,35,37,10,25,23,16,11,9,5,4,26,-7,0,0,-5,-8,0,0,0,-10,0,-30,-48,
-47,-45,-28,-12,-30,-41,-75,-92,-64,-8,-248,-258,-243,-255,-241,-237,-497,-490,
-484,-478,-555,-547,-5583,-5425,-5106,-846,-686,-686,-983,-588]} 1. e4 c5 2.
Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 h5 9. Qd2
Nbd7 10. Nd5 {10.Nd5 scores better than 10.0-0-0. B90: Sicilian Najdorf:
Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Bxd5 11. exd5 g6 12. O-O-O {
White has an edge.} Bg7 13. Kb1 b5 {[#]} 14. Rg1 $146 ({Predecessor:} 14. c4
bxc4 15. Bxc4 a5 16. a4 O-O 17. Bb5 Nb6 18. Bg5 Qc8 19. Bxf6 Qf5+ 20. Qc2 Qxf6
{1-0 (60) Idani,P (2589)-Bosiocic,M (2600) Batumi 2018}) 14... Nb6 15. g4 (15.
Na5 {with more complications.} O-O 16. Nc6 Qc7 17. Bxb6 Qxb6 18. Bd3) 15...
Nfxd5 16. Bxb6 Nxb6 17. Qxd6 Qxd6 18. Rxd6 Nc4 19. Bxc4 bxc4 20. Na5 (20. Nc5 {
seems wilder.} hxg4 21. fxg4 Rxh2 22. a4 c3 23. b3) 20... hxg4 21. fxg4 c3 $1 (
{Reject} 21... Rxh2 $6 22. Nxc4 Rf2 23. g5 $11) 22. Nc6 Rxh2 {Hoping for ...
Rd2.} 23. bxc3 Kf8 {White must now prevent ...e4.} 24. Rf1 e4 25. Rd7 Kg8 (
25... f6 $15) 26. Rfxf7 $2 {This costs White the game.} ({Much worse is} 26.
Rdxf7 e3 $17) (26. Kb2 $11) 26... Bxc3 $19 27. Rf1 Kh8 {And now ...e3 would
win.} 28. Re7 Rc8 {Strongly threatening ...e3.} 29. g5 $2 (29. a4) 29... e3 $1
{[%cal Re3e2] Black is clearly winning.} 30. Rxe3 Rxc6 31. Re8+ Kh7 {( -> ...
Rb6+)} 32. Rf7+ Bg7 33. c3 Rb6+ (33... Rxc3 $142 34. Ree7 {[#]} Rg3 $1 35.
Rxg7+ Kh8 36. Rh7+ Rxh7 37. Re8+ Kg7) 34. Kc1 Rbb2 35. Ree7 {[#]} Rbg2 $1 {
Weighted Error Value: White=0.80/Black=0.40} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.35"]
[White "Abdusattorov, Nodirbek"]
[Black "Ter-Sahakyan, Samvel"]
[Result "1/2-1/2"]
[ECO "A21"]
[WhiteElo "2646"]
[BlackElo "2607"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,16,23,22,13,8,19,2,33,24,39,44,39,39,39,49,34,21,0,0,0,25,2,17,18,
-61,-62,-73,-81,-76,-79,-91,-85,-96,-91,-80,-87,-92,-90,-95,-46,-52,-44,-50,
-49,-95,-36,-63,-8,-9,-9,-5,-8,-8,-8,-8]} 1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. Nf3
d6 5. d4 Nf6 6. Nc3 {A21: English Opening: 1...e5 2 Nc3.} exd4 7. Nxd4 d5 8.
Bf4 {[#]} Nh5 $146 ({Predecessor:} 8... O-O 9. e3 a6 10. Nf3 c6 11. cxd5 Nxd5
12. Nxd5 Qxd5 13. Qxd5 cxd5 14. O-O-O Nc6 {0-1 (77) Nepomniachtchi,I (2774)
-Anand,V (2756) Saint Louis 2019}) 9. Bg3 ({Don't go for} 9. Nxd5 $2 Nxf4 10.
Nxe7 Qxe7 $19) 9... c5 10. Ndb5 {[%cal Rb5c7]} Nxg3 11. hxg3 d4 12. Nd5 {
Strongly threatening Nbc7+.} Na6 13. Qa4 O-O 14. O-O-O Be6 $36 {[%mdl 2048]
White is under pressure.} 15. e4 h6 16. Kb1 Bxd5 17. exd5 ({White should try} 
17. cxd5 $11 Re8 18. Bc4) 17... Nb4 $15 18. a3 {[#]} a6 $1 19. Nxd4 {[#]} b5 $1
{[%cal Rb5a4]} 20. Qb3 bxc4 21. Bxc4 {Nf5 is the strong threat.} cxd4 22. axb4
{[#]} Rb8 $1 23. Qd3 ({Not} 23. Bxa6 $2 Rxb4 24. Qa2 Qd7 $19) 23... Rxb4 24.
Rhe1 Bd6 25. Re2 Qa5 {Hoping for ...Ra4.} 26. b3 Rfb8 {White must now prevent .
..Qa3.} 27. Rb2 $1 ({But not} 27. Qxd4 Qc7 $19) 27... Qb6 (27... Rc8 $17) 28.
Bxa6 {[#]} Rxb3 ({Better is} 28... Ra4 $1 $15 29. Bc4 Bc5) 29. Rxb3 $11 {
The position is equal.} Qxb3+ 30. Qxb3 Rxb3+ 31. Kc2 Ra3 32. Be2 {Weighted
Error Value: White=0.08/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.36"]
[White "Van Foreest, Lucas"]
[Black "Deac, Bogdan-Daniel"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2543"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,106,28,31,24,33,34,35,18,18,13,22,21,40,35,39,42,32,32,35,27,35,41,31,
11,27,15,18,0,29,0,6,0,41,41,54,42,53,30,56,48,51,46,66,-67,-79,-54,-79,-67,
-68,-69,-71,-73,-71,-75,0,-20,-22,-56,-8,-19,-16,-16,-14,-25,-27,-47,-14,-52,
-57,-62,-66,-90,-71,-196,-195,-195,-110,-111,-164,-133,-37,-154,-157,-283,-275,
-229,-270,-570,-588,-612,-585,-1624,-617,-1569,-1383,-1644,-732,-29976,-29960]
} 1. d4 d5 2. c4 e6 3. Nc3 h6 4. Nf3 Nf6 5. Bf4 Bd6 6. Bxd6 {D37: Queen's
Gambit Declined: 5 Bf4.} Qxd6 {6...cxd6 is vanishing.} 7. e3 O-O 8. Rc1 {
White is slightly better.} Qe7 9. Bd3 Nbd7 10. O-O {[#]} Rd8 $146 ({
Predecessor:} 10... a6 11. cxd5 exd5 12. Bb1 Nb6 13. h3 Bd7 14. Qc2 Rac8 15. a4
a5 16. Ne5 {1-0 (44) Homer,N (1643)-Tidmarsh,D (1948) Sunningdale 2014}) 11.
cxd5 exd5 12. a3 a5 13. h3 c6 14. Na4 Ne4 15. Qc2 Re8 16. Rb1 Ng5 {And now ...
Nxf3+ would win.} 17. Nxg5 hxg5 18. g4 Qd8 19. Kg2 Re6 20. b4 axb4 (20... b5 $5
{[%cal Rb5a4]} 21. Nc5 Rh6 $11) 21. axb4 Nf8 22. Nc5 Rh6 23. b5 cxb5 24. Ra1 ({
But not} 24. Rxb5 b6 $15) 24... Rb8 25. Rfb1 Qd6 26. Rxb5 {[#]} (26. Qb3 $14)
26... Bxg4 $1 $15 27. hxg4 Qh2+ 28. Kf3 {aiming for Rf1.} Rf6+ $1 29. Bf5 g6 {
[%mdl 64] Pin} 30. Ke2 gxf5 31. gxf5 Qh3 ({Better is} 31... Re8 $17) 32. Rg1
Rxf5 33. Nd3 Ng6 34. Rxb7 Re8 {...Rxe3+! is the strong threat.} 35. Rg3 {
[%cal Rg3h3]} Qh5+ 36. Kd2 Qh2 37. Kc1 Kg7 (37... Ra8 $5 {[%cal Rh2h1]} 38. Kb2
Kg7 $11) 38. Kb2 Re6 39. Kb3 Ref6 $1 {[%cal Rf5f2] Threatens to win with ...
Rxf2.} 40. Qc1 Rxf2 41. Rxg5 (41. Qg1 $17 Qxg1 42. Rxg1) 41... Rf1 $1 $19 {
[%cal Rf1c1]} 42. Qc2 Qh6 (42... Qh3 $19 43. Rxf7+ (43. Rxd5 $2 Qxe3 44. Kc4
Rc6+ 45. Rc5 Rxc5+ 46. Kxc5 Nf4 $19) 43... Kxf7 44. Rxg6 Qxe3 45. Rxf6+ Kxf6
46. Qc6+ Qe6) 43. Qg2 (43. Rxd5 $2 Qxe3 44. Kc4 Rc6+ 45. Rc5 Rxc5+ 46. Kxc5 Nf4
$19) 43... Rb1+ 44. Nb2 Qh4 (44... Re1 $17 45. Qg3 (45. Qxd5 $2 Rxe3+ 46. Ka4
Qh3 $19) (45. Rxd5 $2 Qxe3+ 46. Kb4 Rc1 $19) 45... Kh7) 45. Rg3 {[#]} (45. Ka2
$15) 45... Qh5 $1 $17 {[%cal Rh5d1] White must now prevent ...Qd1+.} 46. Qc2 (
46. Kc2 $17 Rbf1 47. Kb3) 46... Qh1 $19 47. Rg2 Qf1 48. Qe2 {[#]} (48. Re2)
48... Qc1 $1 {( -> ...Rxb2+!)} 49. Qd3 {If White can now play Rc2 this
consolidates a bit.} Re6 50. Ka2 Ra1+ 51. Kb3 Raa6 52. e4 dxe4 (52... Qa1 $142
53. Qd2 Qa2+ 54. Kc2 Rac6+ 55. Qc3 Rxc3+ 56. Kxc3 Qa3+ 57. Kc2 Rc6+ 58. Kb1 Qa6
59. Rxf7+ Kxf7 60. Rf2+ Kg7) 53. Qc2 Qe3+ {[%mdl 64] Double Attack.  Weighted
Error Value: White=0.59/Black=0.16} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.37"]
[White "Miezis, Normunds"]
[Black "Chigaev, Maksim"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "2467"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,78,7,1,13,6,4,11,14,6,14,9,16,0,-4,-58,-54,-77,-32,-99,-72,-136,-146,
-229,-216,-253,-249,-238,-218,-217,-204,-268,-188,-187,-193,-299,-294,-243,
-209,-345,-353,-309,-191,-421,-417,-552,-550,-556,-547,-551,-531,-561,-554,
-550,-523,-695,-690,-688,-686,-693,-692,-667,-657,-958,-920,-847,-775,-29955,
-5547,-1770,-1474]} 1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 Nc6 5. e4 d6 6. Nge2
Nh6 {A25: English Opening vs King's Indian with ...Nc6 but without early d3.}
7. d3 O-O 8. h4 Nd4 $5 {[%mdl 4] The position is equal. Leaves trodden paths.}
9. Nxd4 exd4 10. Ne2 Ng4 11. h5 c6 12. Nf4 {[#]} (12. Bh3 $11) 12... Ne5 $146 (
{Predecessor:} 12... Re8 13. hxg6 hxg6 14. Bh3 Nf6 15. Kf1 d5 16. f3 Qd6 17.
Kg2 Bxh3+ 18. Nxh3 dxc4 19. dxc4 {0-1 (50) Navrotescu,A (2208)-Skripchenko,A 
(2438) Nimes 2014}) 13. f3 h6 14. Ne2 ({White should try} 14. Nh3 $15) 14... g5
{White is on the road to losing.} 15. Nxd4 {[#]} (15. f4 $142) 15... d5 $1 $17
16. exd5 (16. O-O $17) 16... cxd5 $19 17. c5 Qa5+ 18. Kf1 Qxc5 19. Ne2 {
And now d4 would win.} Qb5 20. Nc3 Qxd3+ 21. Qxd3 Nxd3 22. Nxd5 (22. f4 $142)
22... Be6 23. f4 Rfd8 24. Ne3 (24. Ne7+ $142 Kf8 25. Bxb7) 24... Rac8 ({
Much less strong is} 24... gxf4 25. gxf4 Nxf4 26. Bxb7 $19) 25. f5 Bxa2 26. Bd2
(26. Ke2 {is the only way for White.}) 26... Nxb2 27. Bxb7 Bc4+ 28. Nxc4 Nxc4 {
[%mdl 64] [#] Discovered Attack} (28... Rxc4 $2 29. Rh2 $19) 29. Bxc8 Bxa1 30.
Ba6 Nxd2+ 31. Ke2 Bf6 32. Rc1 Ne4 33. Kf3 Nc3 34. Rc2 Kg7 35. Rb2 Rd6 36. Bc4
g4+ 37. Kg2 Ne4 38. Rb7 Rd2+ 39. Kf1 Nd6 {[%mdl 64] Double Attack.  Weighted
Error Value: White=0.51/Black=0.12} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.38"]
[White "Harikrishna, Pentala"]
[Black "Morovic Fernandez, Ivan"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2719"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,102,31,14,7,20,1,25,20,22,25,21,25,66,58,73,73,72,72,70,70,72,64,66,
64,77,57,61,42,60,59,62,62,61,57,62,61,60,59,59,59,77,71,75,69,79,78,110,106,
97,95,112,109,121,103,149,115,383,381,368,328,512,446,308,308,438,297,469,462,
552,652,570,603,652,641,641,632,610,610,29977,29978,29977]} 1. e4 c5 2. Nf3 e6
3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. Bd3
dxe4 10. Nxe4 Nxe4 11. Bxe4 Qxd1+ 12. Kxd1 Bd7 13. Be3 {B45: Sicilian Four
Knights.} f5 {The main line 13...f5 scores better than 13...0-0-0.} 14. Bf3 Kf7
15. Kc1 {[#] White has an edge.} Rhd8 $146 ({Predecessor:} 15... e5 16. Rd1 Be6
17. b3 Rac8 18. Kb2 b6 19. Rd6 Ne7 20. g3 Rhd8 21. Rad1 Rxd6 22. Rxd6 {1-0 (56)
Areshchenko,A (2470)-Prokopisin,V (2332) Evpatoria 2002}) 16. b3 e5 17. Re1 e4
18. Bh5+ g6 19. Be2 Be6 20. Kb2 Rd7 21. h4 a6 22. Rad1 Rad8 23. Bg5 Rxd1 24.
Bxd1 (24. Rxd1 {looks sharper.} Rxd1 25. Bxd1 Bd7 26. Kc3 Ke6 27. Kc4) 24...
Rd7 25. h5 Ne5 26. hxg6+ hxg6 27. Be2 Bd5 28. Rh1 Ng4 29. Bxg4 fxg4 $14 {
[%mdl 4096] Endgame KRB-KRB} 30. Be3 g3 31. fxg3 Bc6 32. g4 Ke6 33. a4 Rf7 34.
Kc3 Kd6 35. Rh6 Rg7 36. Kd4 Bd7 37. g5 Bf5 38. c4 Kc6 39. b4 b5 $2 {[%mdl 8192]
A mistake that costs the game.} (39... Kd6 $16 {is a better defense.}) 40.
cxb5+ $18 axb5 41. a5 Kb7 (41... Rg8 $142 42. a6 Rd8+ 43. Ke5 Re8+ 44. Kf4 Rf8)
42. Ke5 Re7+ 43. Kf4 Rf7 (43... Rg7 $142 44. Rh8 Rc7) 44. Rh8 {[#] Hoping for
a6+!} Bd7+ (44... Bc8+ {was worth a try.} 45. Ke5 Re7+ 46. Kd5 Rd7+ 47. Kxe4
Re7+ 48. Kf3 Rc7) 45. Ke5 Bc6 46. g4 Rd7 47. Rg8 Rd5+ 48. Kf4 Rd6 49. Rg7+ Ka8
50. a6 {[#] Threatening mate with Rg8+.} Re6 51. Rc7 {[%cal Rc7c8]} Kb8 {
Weighted Error Value: White=0.06/Black=0.51} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.39"]
[White "Xiong, Jeffery"]
[Black "Kuzubov, Yuriy"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "2700"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,137,20,21,32,18,24,28,0,7,0,-13,-2,-4,-24,17,11,11,0,0,0,0,0,0,0,21,
-16,-13,-24,-21,-21,17,20,87,77,83,30,33,32,38,39,51,43,43,50,43,43,54,53,51,
43,43,53,47,60,64,43,44,33,34,37,34,23,23,26,26,13,51,51,51,51,41,46,80,51,62,
62,62,62,114,12,12,12,12,12,12,12,12,8,12,12,34,12,22,12,12,12,12,12,12,0,12,
12,12,12,12,12,12,12,12,12,12,12,12,0,0,0,12,12,12,12,12,12,12,12,14,14,22,13,
40,0]} 1. Nf3 d5 2. g3 c5 3. Bg2 g6 4. c4 Nf6 5. Qa4+ {[#]} Bd7 $146 ({
Predecessor:} 5... Qd7 6. Qxd7+ Nbxd7 7. Nc3 dxc4 8. a4 Bg7 9. a5 O-O 10. O-O
Rb8 11. d3 cxd3 12. exd3 {0-1 (32) Fedoseev,V (2659)-Stupak,K (2551) St
Petersburg 2015}) 6. Qb3 {A08: King's Indian Attack.} dxc4 7. Qxc4 Nc6 8. O-O {
White has an edge.} Rc8 9. Nc3 (9. d3 {with more complications.} e5 10. Nc3 h6
11. Be3 Na5 12. Qh4) 9... Na5 10. Qh4 Bg7 11. d4 cxd4 12. Qxd4 Nc6 13. Qh4 h6
14. Rd1 Qa5 15. Be3 Bg4 16. Ne4 {[%cal Re4f6] Hoping for Nxf6+.} Bf5 {[#]} 17.
Bd2 $1 Qb6 18. Nxf6+ Bxf6 19. Qa4 Bg7 ({And not} 19... Bxb2 20. Rab1 $1 $16)
20. Be3 Qa5 {[#]} (20... Qa6 $11 {remains equal.} 21. Qxa6 bxa6) 21. Qxa5 $1
$16 Nxa5 22. Bd4 ({Worse is} 22. Bxa7 Bxb2 23. Nd4 Bxa1 $17) (22. Nd4 $16)
22... O-O $11 23. Bxg7 Kxg7 24. Nd4 Bd7 25. b4 Nc6 26. Nxc6 Bxc6 27. Bxc6 Rxc6
$14 {[%mdl 4096] Endgame KRR-KRR} 28. Rd7 Rb6 29. a3 e6 30. Rc1 a5 31. bxa5 Rb5
32. Rc3 g5 33. Rf3 h5 34. h3 Kg6 35. Kg2 (35. Kf1 {keeps more tension.} Kg7 36.
Rc3 Kg6 37. Kg2 Ra8 38. Rcc7) 35... Rxa5 36. Rxb7 Re5 37. Kf1 f6 38. Rbb3 Ra5
39. Rb6 Re5 40. Rc3 Ra8 41. g4 hxg4 42. hxg4 Re4 43. f3 Rea4 (43... Re5 $14)
44. Rbb3 (44. Rxe6 $16 {aiming for Rcc6.} Rxa3 45. Rcc6) 44... R8a6 $11 45. Kf2
f5 46. gxf5+ exf5 47. Kg3 R4a5 48. f4 gxf4+ 49. Kxf4 Ra4+ 50. Ke3 Kf6 51. Kd2
f4 52. Ke1 Kf5 53. Rc5+ Kg6 54. Rcc3 Kf5 55. Kf2 R4a5 56. Rh3 Kg6 57. Rhf3 Kg5
58. Rb8 Rxa3 59. Rg8+ Kf5 60. Rf8+ Ke5 61. Re8+ Kf5 62. Rf8+ Ke5 63. R3xf4 Re6
64. R8f7 Ra2 65. Kf3 Ra3+ 66. e3 Kd6 67. Rd4+ Kc6 68. Re4 Kd6 69. Rd4+ {
Weighted Error Value: White=0.10/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.40"]
[White "Martirosyan, Haik M."]
[Black "Eljanov, Pavel"]
[Result "1/2-1/2"]
[ECO "D52"]
[WhiteElo "2624"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "37"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,37,34,38,45,10,10,17,17,17,17,15,16,14,43,43,47,0,0,0,56,0]} 1. d4 d5
2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Qa5 7. Nd2 dxc4 8. Bxf6 Nxf6 9.
Nxc4 Qc7 10. Rc1 Bd6 {[#] D52: Queen's Gambit Declined: Cambridge Springs
Variation.} 11. Qf3 $146 ({Predecessor:} 11. f4 a6 12. Bd3 Bb4 13. O-O Bxc3 14.
bxc3 b5 15. Ne5 c5 16. Qf3 Bb7 17. Qg3 g6 18. Qg5 {0-1 (38) Schmid,R (2171)
-Lentrodt,T (2269) Bad Koenigshofen 2010}) 11... O-O 12. Be2 Rd8 {The position
is equal.} 13. Nxd6 Qxd6 14. Qg3 Qb4 15. Rc2 Ne4 16. Qh4 {[%mdl 64] [#] Double
Attack} Nf6 17. Qg3 Ne4 18. Qh4 {[%mdl 64] Double Attack} Nf6 19. Qg3 {
Weighted Error Value: White=0.08/Black=0.04} (19. g4 $14) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.41"]
[White "Sadhwani, Raunak"]
[Black "Van Foreest, Jorden"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2609"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,98,15,10,0,12,0,10,12,22,0,0,0,0,-14,0,0,10,0,0,0,17,14,42,34,46,52,
80,72,75,27,30,6,7,0,0,0,0,0,0,0,16,0,0,0,0,0,0,0,27,0,159,37,37,37,37,37,49,
46,120,108,139,138,113,113,163,167,162,105,114,94,90,23,24,0,0,0,0,0,0,0,0,0,0,
0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 Nc6 6. Qa4 Bb4+ 7. Bd2
Nd5 8. Qb5 {E04: Open Catalan: 5 Nf3.} Bxd2+ 9. Nbxd2 c3 10. bxc3 Nxc3 11. Qb3
$1 {[%mdl 4] now scores much better than the old 11.Qd3.} (11. Qb2 {feels
hotter.} Na4 12. Qc2 Nb6 13. Nb3 O-O 14. O-O) 11... Nd5 12. O-O O-O 13. Rfc1 {
[#]} h6 $146 ({Predecessor:} 13... Nce7 14. Qc2 c6 15. Ne5 f6 16. Nd3 b6 17.
Nf3 Ba6 18. e4 Bxd3 19. Qxd3 Nc7 {1-0 (37) Piorun,K (2634)-Sanikidze,T (2507)
St Petersburg 2018}) 14. e3 a5 15. Rc5 a4 16. Qb2 a3 17. Qb3 Bd7 18. Qxb7 Ncb4
{Threatening ...Qe7.} 19. Ne5 Ba4 $1 20. Bxd5 Nxd5 21. Nc6 Qd7 22. Rb1 Bxc6 23.
Rxc6 Rab8 $1 {[%cal Rb8b7]} 24. Qxb8 Qxc6 25. Qb3 Nc3 26. Re1 Ra8 27. Nc4 Ne4
28. Ne5 Qc3 29. Rb1 Qd2 30. Qb7 $1 {[%cal Rb7a8][%mdl 64] Double Attack} Qxf2+
31. Kh1 Nxg3+ (31... Ra5 {keeps more tension.} 32. Qxe4 Rb5 33. Rg1 Qxa2 34.
Qa8+ Kh7) 32. hxg3 Rf8 33. Qg2 Qxe3 34. Nc6 f5 35. Rf1 $36 {[%mdl 2048] White
is more active.} Kh7 {[#]} ({Black should try} 35... Qc3 $14) 36. Qf3 $1 $16 {
[%cal Rf3e3]} Qd2 37. Rf2 Qc1+ 38. Kh2 Rf6 39. Ne5 Rf8 40. Qb3 (40. d5 $18 exd5
41. Nd7 (41. Qxd5 Qg5 $16)) 40... Qe1 41. Rg2 Qe4 {[#]} 42. Qxa3 (42. Nd7 $1
$16 {[%cal Rd7f8]} Re8 43. Qc3 (43. Qxa3 Qxd4 44. Nf8+ Kg8 $14)) 42... Rd8 $11
{[%cal Rd8d4]} 43. Qe7 Rxd4 {The position is equal.} 44. Nd7 {Black must now
prevent Nf6+.} Qf3 $1 {[%cal Rf3h5] And now ...Qh5+ would win.} 45. Nf6+ {
[%mdl 64] Discovered Attack} ({Much worse is} 45. Qxe6 Qh5+ 46. Kg1 Qd1+ 47.
Kh2 Qh5+ 48. Kg1 Qd1+ 49. Kh2 Qh5+ $17) 45... Kg6 46. Ne8 Qh5+ 47. Kg1 {
[%csl Ge8][%cal Re7g7]} Qd1+ 48. Kh2 Qh5+ 49. Kg1 {[%csl Ge8][%cal Re7g7]} Qd1+
{Weighted Error Value: White=0.08/Black=0.11} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.42"]
[White "Adly, Ahmed"]
[Black "Matlakov, Maxim"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2602"]
[BlackElo "2682"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,63,19,1,-27,-30,-27,-7,-25,-30,-41,-41,-75,-74,-87,-73,-72,-54,-57,
-32,-27,-9,-9,-9,-8,-8,-15,-9,-9,-8,-8,-8,-8,-8,-8,-8,-10,-8,-8,-6,-12,-3,-3,
-3,-18,-15,-8,-1,-2,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O
6. O-O dxc4 7. Qc2 b5 8. Ne5 {E05: Open Catalan: 5 Nf3 Be7.} Nd5 {[#]} 9. b3
$146 ({Predecessor:} 9. a4 f6 10. Nf3 c6 11. b3 cxb3 12. Qxb3 a6 13. e4 Nb6 14.
Nc3 Bd7 15. Rd1 Qe8 {1/2-1/2 (42) Krklec,D (2281)-Arnaudov,P (2479) Bayern 2013
}) 9... Bb7 10. Bd2 c5 11. bxc4 bxc4 12. Qb2 Qb6 13. Qxb6 axb6 14. Nxc4 Nd7 15.
dxc5 Bxc5 16. Nc3 Ba6 17. Nxd5 {The position is equal.} exd5 18. Bxd5 Rad8 {
[#] Threatens to win with ...Nf6.} 19. Rfc1 $1 Nf6 20. e4 Nxd5 21. exd5 Rxd5 {
Hoping for ...Bxc4.} 22. Be3 Bxc4 23. Rxc4 Bxe3 24. fxe3 $11 {[%mdl 4096]
Endgame KRR-KRR} Rd2 25. a4 h5 26. Rf1 Re8 27. Rf2 Rd3 28. Rb4 Re6 29. Rfb2
Rdxe3 30. Rxb6 Re1+ 31. Kf2 Rxb6 32. Rxb6 {Weighted Error Value: White=0.05/
Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.43"]
[White "Gelfand, Boris"]
[Black "Goryachkina, Aleksandra"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2680"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,61,29,36,8,31,23,32,14,22,25,33,27,29,12,9,9,10,0,0,-31,6,6,6,0,0,0,
0,0,0,0,0,0,5,-19,0,0,0,0,0,0,7,7,7,7,7,5,3,0,0,0,0,0]} 1. c4 c6 2. Nf3 d5 3.
d4 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Bg6 7. Be2 {D12: Slav Defence: 3 Nf3 Nf6 4
e3 Bf5.} Be7 8. O-O Nbd7 9. g3 {White is slightly better.} dxc4 10. Nxg6 {
10.Nxg6 has become a bit dusty these days.} hxg6 11. Bxc4 Qa5 12. Bd3 Rd8 13.
Bd2 Qc7 {[#]} 14. Rc1 $146 ({Predecessor:} 14. Ne4 e5 15. Ng5 O-O 16. Qb3 Nd5
17. Nf3 exd4 18. exd4 Bf6 19. Rac1 Qb6 20. Qa4 {1/2-1/2 (40) Soh,E (2400)
-Schuller,J (2412) ICCF email 2017}) 14... e5 15. Qf3 exd4 (15... Nc5 $5 {
[%cal Rc5d3]} 16. Be2 exd4 17. exd4 Rxd4 $15) 16. exd4 {The position is equal.}
Nb6 17. Rfe1 {[#] And now Rxe7+! would win.} Qd7 18. Bf1 O-O 19. Rcd1 Rfe8 20.
Bg5 Nfd5 21. Bc1 Qf5 22. Kg2 Bb4 23. Rxe8+ Rxe8 24. Nxd5 Nxd5 25. Bc4 (25. h4 {
looks sharper.} Ba5 26. Bd3 Qe6 27. Bc4 Bb6 28. Bb3) 25... Ba5 26. Qxf5 gxf5
27. Bxd5 cxd5 28. Be3 Rc8 29. Rc1 Rxc1 30. Bxc1 Kf8 31. Kf3 {A rather calm
draw.  Weighted Error Value: White=0.06/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.44"]
[White "Adhiban, B.."]
[Black "Onyshchuk, Volodymyr"]
[Result "0-1"]
[ECO "E70"]
[WhiteElo "2672"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,102,39,51,50,64,20,20,0,0,0,74,65,89,81,98,59,79,78,79,71,89,85,86,
93,96,55,72,60,110,95,176,182,159,167,212,106,105,138,113,168,160,105,99,24,22,
31,0,0,40,0,0,0,6,-7,0,-7,-11,-98,-20,-126,-108,-352,-343,-416,-368,-381,-389,
-560,-531,-493,-478,-452,-424,-623,-614,-884,-887,-871,-756,-5087,-4813,-5329,
-5322,-29988,-29989,-29989,-29987,-5497,-1968]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
4. e4 O-O 5. Bg5 d6 6. h3 c5 7. d5 a6 8. a4 e6 9. Bd3 {E71: King's Indian: 4
e4 d6 5 h3.} Re8 $5 {[%mdl 4] An interesting side line.} 10. Nge2 h6 11. Be3 {
The position is equal.} exd5 $1 12. cxd5 {[#]} b6 $146 (12... Nbd7 $11 {
remains equal.}) ({Predecessor:} 12... Nbd7 13. f4 c4 14. Bc2 Qa5 15. O-O Nc5
16. e5 dxe5 17. fxe5 Rxe5 18. Bd4 Nfd7 19. Bxe5 Nxe5 {0-1 (51) Grochal,J (2335)
-Ivanisevic,I (2606) Chess.com INT 2021}) 13. Qd2 $16 Kh7 14. O-O $36 {[%mdl
2048] White is really pushing.} Ra7 15. f4 Rae7 {[%cal Rf6e4]} 16. Ng3 Nxe4 17.
Ncxe4 {Strongly threatening f5.} (17. Ngxe4 f5 $15) 17... f5 {[#]} 18. Bc2 Bxb2
{[#]} (18... Kg8 19. Rae1) 19. Rae1 Bg7 (19... Kg8 20. Bf2) 20. Nf2 b5 21. Nd1
$1 h5 22. Bf2 $1 h4 (22... Rxe1 $16 {is a better defense.} 23. Rxe1 Rxe1+ 24.
Qxe1 (24. Bxe1 Nd7 $16) 24... Bd7) 23. Rxe7 $1 $18 Qxe7 {[#]} 24. Re1 $1 Qd7 (
24... Qf8 25. Nf1) 25. Nxf5 Rxe1+ $16 26. Qxe1 gxf5 27. Ne3 Qf7 28. axb5 ({
Don't play} 28. Bxh4 $6 Bd4 $14) (28. Qa5 $142 $1 {[%cal Ra5b6]} bxa4 29. Qd8 (
29. Bxa4 Qe7 $16) (29. Qxa4 Bd4 $16)) 28... axb5 29. Qb1 ({Much worse is} 29.
Bxh4 $6 Na6 $11) ({White should play} 29. Qa5 $16 {Black must now prevent Qd8.}
Na6 30. Qd8 {[%mdl 64] Double Attack} (30. Qxb5 Nb4 $11)) 29... b4 $11 30. Nxf5
Bxf5 31. Bxf5+ Kh8 32. Qe4 {Bg6 is the strong threat.} Bf6 $1 33. Qe2 {And now
Be6 would win.} Nd7 34. Bc2 Nf8 35. Qd3 Kg7 36. Kh2 {[#]} (36. Qe4 $11) 36...
Ng6 (36... Bg5 $1 $17 37. f5 (37. Bd4+ cxd4) 37... Nd7) 37. Be3 {[#]} (37. Qe2
$11) 37... Ne7 $1 $17 38. Qh7+ $2 (38. Bf2 $17) 38... Kf8 $19 39. Qd3 Qxd5 40.
Qb5 Kg7 41. Bd3 (41. Kh1 $142) 41... Qe6 42. Bf2 Qa2 43. Be3 Qa3 44. Bf2 (44.
g4 $142 hxg3+ 45. Kxg3) 44... Qb2 45. Be3 Qc3 46. Bf2 b3 {[%cal Bb4b3,Bb3b2]
[%mdl 32]} 47. Bc4 Qd2 48. Bg1 b2 49. Be6 Qxf4+ 50. Kh1 Qe4 51. Ba2 c4 {
Never resign too early!  Weighted Error Value: White=0.84/Black=0.13} (51...
Qe1 $142 52. Qb3 Bd4 53. Qf7+ Kh6 54. Qf4+ Kg6 55. Qg4+ Kf6 56. Qe6+ Qxe6 57.
Bxd4+ cxd4 58. Bxe6 b1=Q+ {[%mdl 64] Zwischenzug} 59. Kh2 Kxe6 60. g4 Qf1 61.
g5 Qf2+ 62. Kh1 Nf5 63. g6 Ng3#) 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.45"]
[White "Bartel, Mateusz"]
[Black "Rakhmanov, Aleksandr"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2597"]
[BlackElo "2657"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,82,33,36,25,25,12,14,29,31,1,32,0,0,-8,10,17,11,14,13,13,15,5,21,3,0,
0,5,8,0,0,7,1,0,3,11,9,19,25,26,26,28,0,0,0,0,0,0,0,10,-22,0,-8,-8,-18,0,0,0,0,
0,0,0,0,0,0,8,8,8,8,12,8,12,8,16]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4
5. Nc3 Nf6 6. d4 Be7 7. Bg5 {C42: Petroff Defence: 3 Nxe5 and unusual White
3rd moves.} h6 $1 {[%mdl 4] is now more promising than 7...0-0.} 8. Bh4 {[#]}
Nbd7 $146 ({Predecessor:} 8... Nh5 9. Qe2 Nf4 10. Qe3 Ng6 11. Bxe7 Qxe7 12. Nd5
Qxe3+ 13. fxe3 Kd8 14. Bd3 Be6 {0-1 (28) Sheng,J (2451)-Li,D (2488) Chess.com
INT 2019}) 9. Qd2 Nb6 10. O-O-O Be6 11. Bxf6 Bxf6 12. d5 (12. Bb5+ {with more
complications.} c6 13. d5 Bxc3 14. Qxc3 Bxd5 15. Rxd5 Nxd5 16. Bxc6+ bxc6 17.
Qxc6+ Ke7 18. Re1+) 12... Bxc3 13. Qxc3 Nxd5 14. Qxg7 Qf6 15. Qxf6 Nxf6 16. Nd4
O-O-O 17. Nxe6 fxe6 18. f4 e5 19. Bc4 Rde8 20. fxe5 Rxe5 21. Rdf1 Ng4 22. Bd3 {
[#] And now Bf5+ would win.} Ne3 23. Rf2 Rhe8 24. g4 c5 25. h4 c4 26. Bg6 Rg8 {
The position is equal.} 27. h5 Nxg4 28. Rf4 Ne3 29. Kd2 Rg7 30. Rhh4 Rge7 31.
a4 Kc7 32. Re4 {[#] Hoping for Kxe3.} Rxe4 33. Bxe4 $11 {[%mdl 4096] Endgame
KRB-KRN} Nf1+ 34. Kc3 Ng3 35. Bd5 Re5 36. Rxc4+ Kb8 37. Bf7 Nxh5 38. Rh4 Ng3
39. Rxh6 Nf5 40. Rh2 Kc7 41. Bc4 Ne7 {An uneventful encounter.  Weighted Error
Value: White=0.05/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.46"]
[White "Paravyan, David"]
[Black "Jobava, Baadur"]
[Result "0-1"]
[ECO "D17"]
[WhiteElo "2642"]
[BlackElo "2582"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,114,24,30,-8,33,25,63,57,49,38,46,36,12,12,53,47,86,72,72,70,74,70,
104,9,11,11,11,9,6,8,8,6,6,8,8,0,0,0,0,-49,-49,-49,-56,-137,-77,-234,-67,-68,0,
-64,-64,-64,-64,-64,-26,-64,-8,-15,0,0,0,-664,-663,-2298,-2121,-1927,-1799,
-1795,-1801,-1701,-564,-29968,-29968,-29968,-29968,-29966,-29970,-29969,-29970,
-29974,-29975,-29971,-29973,-29979,-29980,-29980,-29981,-29980,-29981,-29982,
-29983,-29983,-29984,-29984,-29985,-29993,-29994,-29995,-29994,-29996,-29997]} 
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Nb6 8.
Ne5 a5 9. h3 {[#] D17: Slav Defence: 5 a4 Bf5: Lines with 6 Nh4 and 6 Ne5.} Bg6
$146 ({Predecessor:} 9... h6 10. g4 Bh7 11. Bg2 e6 12. O-O Bb4 13. e3 O-O 14.
Ne2 Qe7 15. b3 Rad8 16. Bb2 c5 {1-0 (29) Meskovs,N (2510)-Laurusas,T (2428)
Tallinn 2018}) 10. g3 Nfd7 11. Nxg6 {White is slightly better.} hxg6 12. Bg2 e5
13. d5 cxd5 14. Bxd5 Nxd5 15. Qxd5 Qb6 16. O-O Rxh3 17. Rd1 {[%csl Gd1][%cal
Rd5d7]} Qc6 18. Bg5 {Strongly threatening Nb5.} Be7 {[#]} 19. Bh4 (19. Nb5 $1
$16 Qxd5 (19... Rb8 20. Bxe7) 20. Nc7+ Kf8 21. Bxe7+ Kxe7 22. Nxd5+ Kf8 23.
Rac1) 19... Bxh4 $11 20. Kg2 Bxg3 $1 21. Kxh3 Bxf2 22. Rf1 Qxd5 $1 ({Don't go
for} 22... Qf6 $2 23. Kg2 $18) 23. Nxd5 Bb6 24. Rac1 {aiming for Rc7!} Rd8 25.
Rfd1 Bd4 26. Rc7 b6 {And now ...Nc5 would win.} 27. Kg2 (27. Ra7 {keeps more
tension.} b5 28. Rxa5 bxa4 29. Nc7+ Ke7 30. Nd5+) 27... Nf6 28. Nxf6+ gxf6 $15
{[%mdl 4096] Endgame KRR-KRB} 29. b3 (29. e3 $15 Bxe3 30. Rxd8+ Kxd8 31. Rxf7)
29... f5 $17 30. Rb7 $2 (30. e3 $17 {was the only defense.} Bxe3 31. Rxd8+ Kxd8
32. Rxf7) 30... e4 $2 (30... f4 $1 $19 31. Rc1 Rd7) 31. Rh1 $15 Rd6 (31... Kf8
$1 $15) 32. Rh7 (32. e3 $1 $11 Be5 33. Rh7) 32... Rd7 33. Rxd7 Kxd7 34. Rxf7+ {
KR-KB} Ke6 35. Rh7 f4 (35... Kd6 $15) 36. Kh3 $11 Kf5 37. Rf7+ Bf6 38. Rb7 $2 {
[%mdl 8192] Black converts the advantage convincingly.} (38. Rd7 $11) 38... g5
$1 $19 {[%cal Rg5g4]} 39. Rxb6 {Black should prevent Rb5+.} g4+ 40. Kh2 f3 41.
e3 Bc3 $1 {[%cal Rc3e1]} 42. Rb5+ {[#]} Kf6 $1 43. b4 {[#]} Be1 $1 {Black
mates.} 44. Rb6+ Kf7 45. Rb7+ Ke6 46. Rb6+ Kd7 47. Rg6 g3+ ({Not} 47... axb4
48. Rxg4 Kc6 49. Rxe4 $11) 48. Kh3 g2 49. bxa5 Bxa5 50. Rg7+ Ke6 51. Kh2 Bd2
52. a5 Bxe3 53. a6 Kf6 54. Rg8 Ba7 55. Rg3 Bb8 56. Kg1 Bxg3 57. a7 e3 {
Weighted Error Value: White=0.46/Black=0.11} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.47"]
[White "Tabatabaei, M. Amin"]
[Black "Gretarsson, Hjorvar Steinn"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2639"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,95,0,0,-6,0,0,0,-17,-30,-87,-88,-86,-71,-80,-82,-88,-33,-76,-83,-77,
8,10,6,19,29,12,21,11,31,33,29,25,45,53,235,226,205,90,305,301,276,266,272,271,
271,264,249,250,260,250,279,284,247,151,159,166,272,267,263,267,638,638,633,
592,635,633,612,607,578,570,716,716,712,706,701,683,695,638,1091,942,905,874]} 
1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. e3 Nc6 5. Nbd2 e6 6. c3 Bd6 7. Bg3 O-O 8. Bd3
b6 9. Qe2 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3
Bf4.} Bb7 10. e4 Be7 11. e5 {The position is equal.} Nh5 12. Ng5 $5 {[%mdl 4]
Exploring less charted territory.} Bxg5 $17 (12... Nxg3 $2 13. Bxh7+ Kh8 14.
Nxf7+ $1 {[%mdl 512]} Rxf7 15. hxg3 $18) 13. Qxh5 {[%csl Gd3][%cal Rh5h7]} g6
14. Qe2 cxd4 15. h4 {[#]} dxc3 $146 (15... Bxd2+ $17 16. Qxd2 dxc3 17. bxc3 Qc7
) ({Predecessor:} 15... Bh6 16. h5 g5 17. Rd1 dxc3 18. bxc3 f5 19. exf6 Qxf6
20. O-O Rae8 21. Nf3 e5 {0-1 (60) Matlakov,M (2685)-Caruana,F (2835) Chess.com
INT 2020}) 16. bxc3 Bxd2+ 17. Qxd2 f6 (17... d4 $17 18. O-O Rc8) 18. h5 $11 g5
({Don't go for} 18... fxe5 $2 19. hxg6 Qe7 20. Rxh7 $18) 19. exf6 Qxf6 20. O-O
e5 21. f3 Rad8 22. Rae1 {[%cal Ba1e1,Be1e2,Be2f2,Bf2f5][%mdl 32]} Rfe8 23. Re2
Re6 24. Rfe1 g4 $2 ({Black should try} 24... Kg7 $14) 25. fxg4 $18 e4 {[#]} 26.
Bb5 (26. Rf2 $1 $18 Qh6 27. Qxh6 Rxh6 28. Be2) 26... Ne5 $2 (26... Qe7 $16) 27.
Rf2 Qe7 28. Rf5 Nf7 {[%cal Be5f7,Bf7h6,Bh6g4][%mdl 32]} 29. Ref1 e3 30. Qd4 Nh6
31. Re5 Rxe5 32. Bxe5 $40 {[%mdl 128] And now Bf6! would win. White is out for
blood.} (32. Qxe5 Qxe5 33. Bxe5 Nxg4 $11) 32... Qc5 {[#]} 33. g5 $1 Ng4 {
Strongly threatening ...e2.} 34. Be2 Qxd4 35. Bxd4 ({Worse is} 35. cxd4 Nxe5
36. dxe5 d4 $11) 35... Bc8 (35... Nf2 $142 36. Bxe3 Ne4) 36. Rf4 Re8 37. c4 ({
Less strong is} 37. Bxg4 Bxg4 38. Rxg4 e2 $14) 37... Re4 $2 (37... Nf2 38. cxd5
Ne4) 38. Rxe4 {White is clearly winning.} dxe4 {[%mdl 4096] Endgame KBB-KBN}
39. c5 bxc5 40. Bc4+ Kf8 41. Bxc5+ {[%mdl 64] Double Attack} Ke8 42. g6 hxg6
43. hxg6 e2 44. Bb4 Bf5 45. Bf7+ Kd7 {Threatens to win with ...Be6.} 46. g7 Bh7
{[#]} 47. Bg6 $1 {[%mdl 512]} Bg8 48. Bf5+ {[%mdl 64] Double Attack.  Weighted
Error Value: White=0.11/Black=0.47} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.48"]
[White "Niemann, Hans Moke"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2638"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "151"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,151,-7,12,8,6,-29,-11,-18,0,-4,0,0,0,0,0,0,0,0,0,0,0,0,21,27,19,1,0,0,
0,0,0,0,0,-3,35,35,30,31,33,31,37,31,29,12,14,14,27,37,58,72,107,110,120,120,
126,118,120,103,118,118,114,130,127,130,108,47,115,91,89,89,89,89,89,89,90,65,
68,64,90,90,92,85,92,46,46,46,51,51,101,101,370,316,302,326,314,256,204,244,
249,241,239,225,207,170,127,24,38,39,137,0,0,0,11,12,88,102,117,117,117,114,
114,114,114,13,13,13,13,13,13,13,13,13,13,13,13,13,59,84,1293,990,579,8,8,0]} 
1. Nf3 Nf6 2. g3 c5 3. b3 d5 4. Bb2 Nc6 5. Bg2 d4 6. O-O {A08: King's Indian
Attack.} e5 7. Na3 Bd6 8. Nc4 {[#]} Bc7 $146 ({Predecessor:} 8... O-O 9. d3 Bc7
10. a4 Be6 11. Ng5 Bg4 12. h3 Bh5 13. Ba3 Qe7 14. Qd2 Rad8 {0-1 (77) Nemeth,Z 
(2317)-Gal,J (2370) Hungary 2014}) 9. a4 Rb8 10. Ba3 b6 11. e3 O-O 12. exd4
exd4 13. c3 Be6 14. cxd4 Nxd4 15. Bb2 Bg4 16. Bxd4 cxd4 17. h3 Be6 18. Re1 Rc8
19. Rc1 h6 20. Qe2 d3 21. Qf1 Re8 22. Re3 Bf5 23. Rxe8+ Nxe8 24. Rc3 Bb8 25.
Qc1 Nf6 26. Nce5 Rxc3 27. Qxc3 Ne4 28. Qc4 Qc7 29. Nc6 $1 Nd6 30. Qc1 Be4 31.
Nfd4 Nf5 32. Qe1 Nxd4 33. Nxd4 Bxg2 34. Qe8+ Kh7 35. Kxg2 Qe5 36. Qxe5 Bxe5 $16
{[%mdl 4096] Endgame KB-KN} 37. Nf5 (37. Nc6 $16 Bc3 38. Kf3 (38. dxc3 $2 d2
$19) 38... Bxd2 39. Nxa7) 37... g6 (37... Kg6 $14 38. Ne3 f5) 38. Ne3 (38. f4 {
feels hotter.} Bb2 39. Nd6 Bc1 40. Kf2 Bxd2 41. Nxf7 h5 42. Ne5) 38... f5 39.
f4 Bd4 {Hoping for ...Bxe3.} 40. Kf3 Kg7 41. Nd1 Kf6 42. Nf2 Ke6 43. Nxd3 a5
44. Ne1 Kd5 45. Nc2 h5 46. Ne3+ ({Of course not} 46. Nxd4 $6 Kxd4 47. Ke2 h4
$11) 46... Kc5 47. Ke2 Bg7 48. Nc2 h4 49. gxh4 Kd5 $2 {[%mdl 8192]} (49... b5
$16) 50. Ke3 Bf6 51. h5 gxh5 52. Kd3 Bh4 53. Ne3+ Ke6 54. Ke2 Bf6 55. Kf3 Bd4
56. Kg3 Bf6 57. Nc4 ({White should play} 57. Kg2 $16) 57... Kd5 58. Nxb6+ Ke4
59. h4 ({Better is} 59. Nc4 $16 h4+ 60. Kf2) 59... Bd8 $11 60. Nc4 Kd3 61. Ne5+
Kxd2 (61... Ke4 $1 $11 {keeps the balance.}) 62. Nc6 $16 Bb6 {[#] ...Kc3 is
the strong threat.} 63. b4 $1 {[%cal Rb4a5]} axb4 64. Nxb4 Ke2 65. Nc6 Bf2+ 66.
Kg2 (66. Kh3 $16 {Black must now prevent a5.} Kf3 67. Ne5+ Ke4 68. a5) 66...
Bxh4 $11 67. Nd4+ Kd3 {[#]} 68. a5 $1 {[%cal Ba4a5,Ba5a6][%mdl 32]} Bd8 $1 {[#]
} ({But not} 68... Kxd4 $2 69. a6 $18) 69. a6 $1 Bb6 ({Don't blunder} 69...
Kxd4 $2 70. a7 $18) 70. Nxf5 Ke4 {[%mdl 64] Double Attack} 71. Ne7 Bc5 72. Ng6
Kd5 73. f5 Bd4 $2 {[%mdl 8192] [#]} (73... Kc6 $16) 74. Ne7+ $1 $18 Kd6 75.
Nc8+ $2 (75. f6 $1 $18 {White threatens Nf5+ and mate.} Kd7 76. Nf5) 75... Ke5
$11 76. Ne7 {Weighted Error Value: White=0.12/Black=0.14} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.49"]
[White "Vokhidov, Shamsiddin"]
[Black "Zhou, Jianchao"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2521"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,62,12,0,6,4,23,0,0,-2,0,7,0,2,2,-6,3,-23,-22,-34,-30,-38,-8,-8,-8,-8,
-17,-8,-26,-44,-37,-60,-53,-27,-29,-91,0,-31,-25,-25,0,0,0,0,0,-75,-83,-123,
-89,-372,-387,-397,-381]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6
6. h3 e5 7. Nb3 Be6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4
and 6 Be3 e5.} 8. f4 {The main line 8.f4 scores better than 8.Be3.} b5 9. f5
Bc8 {The position is equal.} 10. Bg5 Nbd7 11. a4 b4 12. Nd5 Bb7 {[#]} 13. Bc4
$146 ({Predecessor:} 13. Qf3 Be7 14. Bxf6 Nxf6 15. O-O-O Bc6 16. Nxf6+ Bxf6 17.
a5 Ba4 18. Rd5 O-O 19. g4 {1-0 (40) Hilwerda,J (2209)-Sethuraman,S (2038)
Paracin 2021}) 13... Be7 14. Bxf6 (14. Nxe7 {feels hotter.} Qxe7 15. Nd2 O-O
16. Qe2 Rac8 17. O-O) 14... Nxf6 15. Qd3 Nxd5 16. exd5 Bh4+ 17. g3 Bg5 18. h4
Bh6 19. a5 O-O 20. Qe4 Rc8 21. Rh2 Qc7 22. Bd3 f6 23. Rd1 (23. Ra4 $11) 23...
Ba8 ({Black should try} 23... Kh8 $17) 24. Kf1 Qb7 25. Qe2 Qxd5 26. Bxa6 {
[%mdl 64] Discovered Attack} Qc6 27. Bxc8 Rxc8 28. Kg1 {[#]} (28. a6 $11) 28...
d5 $1 $17 {[%mdl 1024] Black has strong compensation.} 29. a6 {[#]} d4 $1 {
And now ...Be3+ would win.} 30. Na5 $2 {[%mdl 8192]} (30. Rg2 $17) 30... Qb6
$19 {...d3+ is the strong threat.} 31. Nc4 Qc5 {Weighted Error Value: White=0.
33/Black=0.07} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.50"]
[White "Yilmaz, Mustafa"]
[Black "Bjerre, Jonas Buhl"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2626"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,72,12,23,12,21,20,17,0,0,0,3,16,16,16,16,16,16,16,16,10,14,11,14,12,
14,14,17,18,26,16,20,16,16,20,35,30,39,25,30,34,51,8,14,0,45,16,39,15,19,0,39,
45,53,36,72,25,27,0,72,72,79,0,50]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5.
Qa4+ Nc6 6. e3 O-O 7. Qc2 {D38: Queen's Gambit Declined: Ragozin Defence (4
Nf3 Bb4).} Re8 8. Bd2 a6 9. a3 Bd6 10. h3 Bd7 11. Rd1 e5 {[#] Strongly
threatening ...Nxd4!} 12. cxd5 $146 ({Predecessor:} 12. dxe5 Nxe5 13. cxd5
Nxf3+ 14. gxf3 c6 15. dxc6 Bxc6 16. Bg2 Qa5 17. Ne2 Qg5 18. Bc3 {1-0 (84)
Martirosyan,H (2607)-Nguyen,T (2545) Batumi 2019}) 12... exd4 13. dxc6 dxc3 14.
cxd7 cxd2+ 15. Rxd2 Qxd7 16. Bd3 Qe7 17. O-O Rad8 18. Rfd1 c6 19. g3 Bb8 20. b4
g6 21. Bc4 Rxd2 22. Rxd2 Ne4 23. Rd4 Nd6 24. Ba2 Nf5 25. Rd3 {Hoping for e4!}
Rd8 26. h4 (26. e4 $5 Rxd3 27. Qxd3 $14) 26... Rxd3 27. Qxd3 Nd6 28. Qd4 h6 29.
Kg2 Bc7 30. Bb3 Bb8 31. h5 g5 32. Bc2 Bc7 33. Qd3 {[#] White wants to mate
with Qh7+.} Kf8 34. Qd4 {[%cal Rd4h8]} Kg8 35. Nh2 Qe6 36. Nf3 Qe7 {Weighted
Error Value: White=0.11/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.51"]
[White "Jumabayev, Rinat"]
[Black "Meshkovs, Nikita"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2658"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,91,34,35,24,30,20,42,15,11,17,15,18,12,-16,16,0,0,-17,0,0,0,-14,27,58,
41,47,34,41,62,28,45,10,58,56,58,58,56,62,67,67,71,60,113,60,56,74,81,77,73,20,
22,14,27,19,25,6,6,0,5,0,0,0,0,0,5,0,0,-6,0,-2,0,0,0,0,0,0,0,0,0,0,0,0,0,-4]} 
1. Nf3 d5 2. g3 Nd7 3. d4 Nb6 4. Bg2 Bf5 5. Nbd2 e6 6. Nh4 {D02: 1 d4 d5 2 Nf3
sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bg4 7. O-O Nf6 {[#]} 8.
Qe1 $146 {White is slightly better.} ({Predecessor:} 8. c3 Bd6 9. Qe1 O-O 10.
e4 Be7 11. Nhf3 Bh5 12. Ne5 Nfd7 13. exd5 exd5 14. Ndf3 {0-1 (69) Tanaka,T 
(2099)-Real de Azua,E (2440) Chess.com INT 2021}) 8... c5 9. dxc5 Bxc5 10. e4
O-O 11. c3 Nfd7 12. Nhf3 Re8 13. Nb3 e5 14. h3 Bh5 15. Nh4 d4 16. cxd4 exd4 17.
Nf5 Rc8 18. Bf4 Ne5 19. g4 Bg6 20. Qd1 (20. Bxe5 $5 Rxe5 21. Rc1 $14) 20... d3
21. Rc1 Bf8 22. Rxc8 Nxc8 23. Nc1 h5 24. Bxe5 Rxe5 25. Nxd3 Ra5 ({Black should
try} 25... Re8 $14) 26. Nf4 ({Of course not} 26. gxh5 $6 Bxf5 27. exf5 Nd6 $11)
(26. a3 $16) 26... Qxd1 $14 27. Rxd1 hxg4 28. hxg4 Bxf5 29. exf5 (29. gxf5 $16
{aiming for Rd8.} Rxa2 30. Rd8) 29... Ra4 $11 30. Nd5 ({Not} 30. Bxb7 $2 Nd6
$19) 30... Rxg4 31. f6 Rc4 32. Bh3 gxf6 {The position is equal.} 33. Nxf6+ Kg7
34. Ne8+ Kg6 35. Rd7 Rc1+ 36. Kg2 Re1 37. Nc7 {[#] Black must now prevent Rd8.}
Nb6 38. Rd3 (38. Rd8 {is more complex.} Bc5 39. Rd2 Bb4 40. Rd4 Bc5 41. Rd2)
38... Re5 (38... Re2 {seems wilder.} 39. Rf3 Bd6 40. Bf5+ Kg5 41. Bd3 Rd2) 39.
Bg4 Rc5 40. Ne8 f5 41. Bd1 Nd5 {[#] Hoping for ...Nf4+.} 42. Kf3 Nb4 43. Rd7
Rd5 44. Rxd5 Nxd5 45. Bb3 Nb4 46. Nc7 {Weighted Error Value: White=0.09/
Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.52"]
[White "Antipov, Mikhail Al."]
[Black "Suleymanli, Aydin"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2619"]
[BlackElo "2541"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,79,31,38,9,16,5,19,8,42,42,26,0,10,10,10,11,26,-25,-22,0,-10,-19,0,0,
0,-22,0,0,0,-21,0,0,50,36,100,95,91,64,83,97,101,61,58,68,66,10,172,174,174,
175,174,174,175,171,241,250,330,330,330,330,330,330,710,679,985,968,889,875,
744,707]} 1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. h3 g6 7. Nf3 {
B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack.} Bf5 8. Bb5 $5 {
[%mdl 4] 8.Be2 is setting a new trend. Leaves trodden paths.} a6 9. Bxc6+ {
The position is equal.} bxc6 10. O-O Bg7 {[#]} 11. Be3 $146 ({Predecessor:} 11.
Ne5 f6 12. Nd3 Bxd3 13. Qxd3 Nh6 14. c4 O-O 15. Nc3 Qd7 16. Bxh6 Bxh6 17. Rfe1
{1/2-1/2 (67) Epding,O (2148)-Brumm,C (2142) Bayern 2015}) 11... Nf6 12. Nbd2
O-O 13. Re1 a5 14. Rc1 (14. Ne5 $142) 14... a4 $11 15. b4 axb3 16. axb3 Ra2 17.
b4 Rfa8 18. Ne5 Nd7 19. Nxd7 Qxd7 20. Bf4 Rb2 21. g4 {aiming for Ra1.} Be6 22.
Nb3 Rxb3 23. Qxb3 $16 h5 24. Ra1 $1 {[%cal Ra1a8]} Rxa1 25. Rxa1 hxg4 26. Ra8+
Kh7 27. Qa2 {Black must now prevent Qa7.} Bf5 $1 28. f3 (28. Ra7 $1 $14 Qe6 29.
Qd2) 28... g3 $2 {Loses the game.} (28... gxh3 $11 {and Black is okay.} 29. Qf2
Bf6) 29. Qg2 $36 {[%mdl 2048] White has strong initiative.} ({But not} 29. Bxg3
$6 Bxh3 30. Qe2 g5 $16) 29... f6 30. h4 ({Don't play} 30. Bxg3 $6 Bxh3 31. Qe2
Bh6 $16) ({Much less strong is} 30. Qxg3 $6 g5 $16) 30... e5 31. Bxg3 e4 32.
Bf4 Qb7 {[#]} (32... exf3 $142 33. Qxf3 Be4) 33. Qa2 $1 Qd7 34. Qa7 Qe6 {[#]}
35. Qb8 $1 g5 36. hxg5 Bg6 $2 (36... exf3 37. Qe8 fxg5) 37. Qc8 {White is
clearly winning.} Bf5 38. Qxe6 Bxe6 39. gxf6 Bxf6 40. b5 {Weighted Error Value:
White=0.09/Black=0.23} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.53"]
[White "Ivic, Velimir"]
[Black "Budisavljevic, Luka"]
[Result "1/2-1/2"]
[ECO "B45"]
[WhiteElo "2606"]
[BlackElo "2508"]
[Annotator "TA"]
[PlyCount "196"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,196,23,33,29,16,16,16,12,12,0,28,22,24,-3,-9,-27,-45,-44,-5,-33,-28,
-110,0,-25,-3,-64,-17,-68,-26,-27,-30,-75,-85,-72,-83,-145,-155,-147,-141,-154,
-143,-143,-141,-150,-148,-136,-72,-75,-21,-112,-104,-115,-101,-150,-102,-243,
-265,-250,-251,-251,-244,-304,-277,-266,-261,-233,-216,-204,-201,-220,-233,
-241,-244,-237,-203,-207,-207,-233,-234,-260,-235,-256,-242,-234,-228,-219,
-218,-200,-190,-187,-189,-189,-125,-132,-132,-132,-128,-127,0,-106,0,-108,-92,
-99,-90,-95,-72,-74,-37,-43,-50,-47,-14,-8,0,-56,-8,-31,-14,-15,-27,-99,-99,
-99,-97,-93,-97,-80,-88,-166,-166,-166,-166,-166,-166,-136,-35,-35,-35,-36,-35,
-33,-29,-90,-90,-102,-97,-136,-37,-163,-22,-28,-24,-22,-22,-28,-28,-29,-8,-8,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4
Nc6 5. Nc3 Nf6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 f5 10. exf6 $1 {B45:
Sicilian Four Knights.} gxf6 $1 {[%mdl 4] is more profitable than 10...Nxf6 at
the moment.} 11. Bd3 Qb6 {[#]} (11... Nxf4 12. O-O $16 (12. Nxf6+ Kd8 $16)) 12.
f5 $146 ({Predecessor:} 12. a3 Ba6 13. Qh5+ Kd8 14. Qe2 Bxd3 15. Qxd3 f5 16.
Ng5 Kc7 17. c4 Nf6 18. b4 {1-0 (41) Naiditsch,A (2710)-Moiseenko,A (2698)
Germany 2014}) 12... exf5 13. Nf2 Ba6 14. O-O O-O-O 15. Kh1 Rg8 16. a4 Bxd3 17.
Qxd3 Nb4 18. Qb3 (18. Qxf5 {is more complex.} Qc5 19. Qxh7 Rg7 20. Qh3 Qxc2 21.
Bf4) 18... Bd6 19. Be3 (19. Nd3 $11 {keeps the balance.}) 19... Qb8 (19... c5
$17 20. Nd3 Qc6) 20. Bd2 Nd5 21. Qd3 ({White should try} 21. Qxb8+ $11 Bxb8 22.
Nd3) 21... Rg7 (21... Qxb2 $2 22. Rab1 $18) 22. c4 {[#]} (22. Qa6+ $1 $11 Qb7
23. Qxb7+ Kxb7 24. c4) 22... Rdg8 $1 23. g3 ({Don't go for} 23. cxd5 $2 Rxg2
24. Qa6+ Kd8 $19) 23... Ne7 $36 {[%mdl 2048] Black is more active.} 24. Rad1 c5
25. Nh3 Bxg3 26. Bf4 (26. Bh6 $142 Qb7+ 27. Qf3 Qxf3+ 28. Rxf3) 26... Qb7+ $17
27. Qf3 Qxf3+ 28. Rxf3 {[%cal Rf4g3]} Bxf4 29. Nxf4 Rg4 30. b3 Nc6 31. Nd5 Rd4
({Better is} 31... Nd4 32. Rfd3 R8g7 33. Nxf6 Rg2) 32. Rdf1 Rd2 (32... Rf8 $17)
33. R3f2 (33. Rxf5 $11 {remains equal.} Rb2 34. Nxf6) 33... Rxf2 34. Rxf2 {
[%mdl 4096] Endgame KRN-KRN} Rg5 35. h4 Rg4 36. Rxf5 (36. h5 $17 {was forced.})
36... Rxh4+ $19 37. Kg2 Nd4 {[%mdl 64] Double Attack} 38. Rxf6 Nxb3 39. Nf4
Rg4+ 40. Kf3 Rg1 41. Rf8+ Kc7 42. Nd5+ Kd6 43. Ne3 Nd4+ 44. Ke4 Re1 45. Kd3 h5
46. Rh8 Rh1 47. Rh6+ Ne6 48. Rh7 Kc6 49. Nf5 Rh3+ 50. Kd2 Ng5 51. Rh6+ Kc7 52.
Nd6 Ne6 53. Ne8+ Kd8 54. Nf6 Nf4 (54... h4 $19 55. Rh7 Kc8) 55. Rh7 $17 Rd3+
56. Kc2 Rd4 57. Kb3 Rd3+ 58. Kc2 Rd4 59. Kb3 Rd6 60. Rh8+ Ke7 61. Nxh5 Ne6 (
61... Rd3+ {feels hotter.} 62. Kb2 Ng6 63. Rc8 Kd6 64. Ng7 Ne5) 62. Kc3 Ng5 {
aiming for ...Ne4+.} 63. Nf4 $1 Ne4+ 64. Kb3 Nd2+ 65. Kc3 Ne4+ (65... Rd4 {
seems wilder.} 66. Nd5+ Ke6 67. Re8+ Kf5 68. Rf8+ Kg6) 66. Kb3 $1 Kf6 67. Re8
Rd4 68. Nd5+ Kf5 {...Nd6 is the strong threat.} 69. Rf8+ {[#]} (69. Ne7+ $11
Kg5 70. Rg8+ Kf6 71. Nd5+ Ke5 72. Re8+ Kd6 73. Ne7) 69... Ke5 $1 70. Re8+ Kd6
71. Nc3 Nd2+ 72. Kc2 {Strongly threatening Nb5+.} a6 ({But not} 72... Nxc4 73.
Nb5+ Kd5 74. Nxd4 $11) 73. Rh8 (73. Ra8 $17 Nxc4 74. Rxa6+ Ke5 75. Ra7) 73...
Nxc4 $19 74. Rh6+ Kc7 75. Rxa6 Ne3+ 76. Kc1 {[#]} Rd3 (76... Kb7 $1 $17 {
[%cal Rb7a6]} 77. Rh6 Rc4) 77. Nb5+ $15 Kb7 78. Rh6 Nc4 79. Kc2 Rg3 80. Nc3 (
80. Rh7 $11) 80... Rg2+ 81. Kd3 Nb2+ 82. Ke4 Rg4+ (82... Rc2 $17 83. a5 Rxc3
84. Rb6+ Kc7 85. Rxb2 Ra3) 83. Ke5 ({White should play} 83. Kf5 $1 $15 Rb4 84.
Nd5) 83... Nd3+ ({Don't do} 83... Nxa4 84. Nxa4 Rxa4 85. Kd5 $17) (83... Nc4+
$19 84. Kf6 Nd6) 84. Kd6 $11 Rd4+ 85. Ke7 Ne5 86. Rd6 Rc4 87. Nd5 Rxa4 {
White must now prevent ...Re4.} 88. Rb6+ $1 {The position is equal.} Ka7 {
Threatens to win with ...Rd4.} 89. Rb5 Ra6 (89... Rd4 {is interesting.} 90.
Ra5+ Kb7 91. Rxc5 Ka6 92. Nc7+ Kb6) 90. Rxc5 Re6+ 91. Kd8 Rc6 92. Ra5+ Kb7 {
Hoping for ...Rc8+.} (92... Ra6 {looks sharper.} 93. Rb5 Rh6 94. Rb1 Rd6 95.
Rb5 Rh6) 93. Rb5+ Ka6 94. Nc7+ {[%mdl 64] Discovered Attack} Rxc7 $1 95. Rxe5
Kb6 96. Rd5 Kc6 97. Rd1 {White threatens Rc1+ and mate.} Ra7 {And now ...d5
would win.} 98. Rc1+ Kd5 {Weighted Error Value: White=0.19/Black=0.20} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.29"]
[Round "3.54"]
[White "Georgiev, Kiril"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2577"]
[BlackElo "2484"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,64,0,0,0,0,0,0,0,0,-16,-13,-33,0,-22,0,0,-10,0,0,-28,0,-72,-43,-59,
-41,-55,-45,-61,-62,-70,-44,-30,0,-101,-135,-140,-140,-157,-132,-178,-179,-204,
-198,-203,-201,-239,-224,-287,-203,-202,0,-269,0]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6
4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 b5 8. a4 {E05: Open Catalan: 5 Nf3 Be7.
} b4 9. Ne5 Qxd4 10. Bxa8 {The position is equal.} Qxe5 11. Bf3 Ba6 12. Bf4 Qc5
13. Be3 Qa5 14. Nd2 $1 {[%cal Rd2c4]} b3 15. Qc1 ({Much weaker is} 15. Nxc4 Qb4
$17) 15... Qb4 16. Nb1 Nd5 17. Bd2 (17. Rd1 $11) 17... Qc5 18. Nc3 Nc6 19. Rd1
Rd8 20. Ne4 Qb6 21. a5 {[#]} Qb5 $146 ({Predecessor:} 21... Qb8 22. Be3 Bb5 23.
Bc5 Bxc5 24. Nxc5 a6 25. Rd2 Qa7 26. Ne4 Nd4 27. Bg2 Nc2 28. Rb1 c6 {0-1 (39)
Shankland,S (2512)-Shabalov,A (2590) Saint Louis 2011}) 22. Nc3 Qc5 23. Be3 (
23. Ne4 $11 {remains equal.} Qb5 24. Nc3) 23... Nxe3 $17 24. Qxe3 Qxe3 25. fxe3
Ne5 26. Kf2 Rb8 27. h3 Kf8 28. Be4 Bb4 29. Rd4 Ke7 30. Rdd1 Bd6 31. Bf3 Bb4 32.
Be4 $1 Bd6 $2 {Weighted Error Value: White=0.23/Black=0.20} (32... Bxc3 $19 33.
bxc3 f6) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.1"]
[White "Yu, Yangyi"]
[Black "Firouzja, Alireza"]
[Result "1/2-1/2"]
[ECO "D19"]
[WhiteElo "2704"]
[BlackElo "2770"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,60,26,35,0,8,7,0,8,0,2,18,18,18,18,18,18,18,18,25,21,24,33,55,55,55,
55,56,54,63,60,67,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 dxc4 5.
a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O O-O 9. Qe2 Bg6 10. Ne5 Nbd7 11. Nxg6 hxg6
12. Rd1 Qa5 13. Qc2 {13.Na2 is the modern continuation. D19: Slav Defence: 5
a4 Bf5 6 e3: Main line with 9 Qe2.} c5 14. Na2 cxd4 15. Nxb4 Qxb4 16. Rxd4 Rac8
{[#] ...Qe1+ is the strong threat.} 17. Qe2 Qb6 18. a5 Qc7 {Black wants to
play ...e5.} 19. a6 e5 20. axb7 exd4 21. bxc8=Q Rxc8 22. b3 Ne5 {next ...d3 is
good for Black.} 23. exd4 Nxc4 24. bxc4 Qxc4 25. Qxc4 Rxc4 $14 {KRB-KRN} 26.
Be3 Rc7 {[#]} 27. d5 $146 ({White should try} 27. Kf1 $14) ({Predecessor:} 27.
Ra5 Rd7 28. Kf1 Nd5 29. Ke2 f6 30. Kd3 Kf7 31. h3 Ke6 32. Ra6+ Nb6 33. g4 {
1-0 (49) Kramnik,V (2799)-Sebag,M (2510) Enschede 2008}) 27... Nxd5 $11 {
The position is equal.} 28. Bxa7 g5 29. h3 f6 30. g3 Kf7 {Weighted Error Value:
White=0.06/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.2"]
[White "Nihal Sarin"]
[Black "Ponkratov, Pavel"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2652"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,38,4,-3,47,36,344,44,46,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6
3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Be2 Bd6 7. O-O O-O 8. b3 Ne4 9. Nxe4 dxe4
10. Nd2 f5 11. Bb2 Bxh2+ {D45: Semi-Slav: 5 e3.} 12. Kxh2 Qh4+ 13. Kg1 Rf6 $1 {
White is slightly better.} 14. f3 (14. g3 $5 {[%cal Rg3h4]} Qh3 15. Re1 $14)
14... Rh6 {[#] The position is equal.} 15. Qe1 $146 ({Predecessor:} 15. fxe4
Qh2+ 16. Kf2 Qh4+ {1/2-1/2 (16) Beim,V (2555)-Al Sayed,M (2405) Oberwart 2002})
15... Qh2+ 16. Kf2 Qh4+ 17. Kg1 {[#] And now Qxh4 would win.} Qh2+ 18. Kf2 {
Rh1 is the strong threat.} Qh4+ 19. Kg1 {Black must now prevent Qxh4.} Qh2+ {
Weighted Error Value: White=0.14/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.3"]
[White "Najer, Evgeniy"]
[Black "Saric, Ivan"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2654"]
[BlackElo "2644"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,121,8,18,0,0,-18,0,0,0,0,0,-1,0,-2,23,25,39,19,0,8,109,60,64,26,40,
33,31,25,28,28,30,35,29,37,34,22,56,43,56,0,0,0,14,0,7,0,0,12,18,0,54,53,39,35,
61,0,0,0,0,0,33,41,44,36,33,26,43,40,61,33,206,206,206,198,198,198,523,522,519,
516,516,516,494,8,118,0,494,490,462,256,214,94,85,0,45,0,0,0,0,0,0,0]} 1. e4 c5
2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Be3 Be6 9.
Nd5 Nbd7 10. Qd3 Bxd5 11. exd5 Rc8 12. O-O-O {B92: Sicilian Najdorf: 6 Be2.}
Nb6 13. Kb1 O-O 14. Bf3 Nc4 15. Bc1 {[#]} Qd7 $146 ({Predecessor:} 15... Nd7
16. Be4 g6 17. g4 Bh4 18. Rdg1 Nf6 19. f3 b5 20. Rg2 a5 21. Nd2 Bg5 {1/2-1/2 
(31) Lobanov,S (2435)-Sarana,A (2543) Tarvisio 2017}) 16. h3 Qa4 17. Rhe1 Bd8
18. g4 Re8 19. Be4 g6 20. f3 Nd7 (20... Qd7 $11 {keeps the balance.}) 21. h4
Bxh4 22. Rg1 (22. Rh1 $5 {[%cal Rh1h4]} Bd8 23. Rh2 $11) 22... Bf6 23. Rh1 {
[%mdl 1024] White has compensation.} Bg7 24. Rh3 Nf8 25. Rdh1 Qb5 26. Nd2 Nb6
27. Qxb5 axb5 28. Nf1 Red8 29. Bg5 Rd7 30. b3 (30. Ng3 $14) 30... Rdc7 $11 31.
Bd2 Nbd7 32. Bd3 e4 33. fxe4 Nc5 34. Ba5 Re7 35. Nd2 ({Much worse is} 35. Bxb5
Nxe4 36. Re3 Bd4 $15) 35... Nxd3 ({Better is} 35... h6 $11) 36. cxd3 $14 Nd7
37. Bb4 Nc5 $1 38. Rxh7 (38. Ba3 $1 $14) 38... Nxd3 $11 39. Bxd6 Rd7 40. Bg3 b6
41. g5 Rc3 42. Nf3 {And now Ne5 would win.} Rd8 $1 {[%cal Rd8c8] [#] White
should prevent ...Rdc8.} 43. Ne5 $1 Re8 ({Avoid the trap} 43... Bxe5 $2 44.
Bxe5 Rc1+ 45. Rxc1 $18) (43... Nc5 44. Nxf7) 44. Nc6 $36 {[%mdl 2048] Black is
under pressure.} Rxe4 45. Bd6 {aiming for Ne7+.} Nf2 $2 {[#]} ({Black should
try} 45... f5 $1 $14) 46. Ne7+ $1 $18 Rxe7 47. Bxe7 {Threatening mate with
Rxg7+!} Nxh1 48. Rxh1 {[%mdl 4096] Endgame Black must now prevent d6. KRB-KRB}
Rc7 $2 (48... Rd3) 49. d6 Rd7 50. Rc1 Be5 51. Rc8+ Kg7 52. Bf8+ $2 (52. Kc2 $18
{Threatens to win with Rc6.} b4 53. Kd3 Rxd6+ 54. Bxd6 Bxd6 55. Rc6) 52... Kh7
(52... Kg8 $11) 53. Be7 $2 {[%mdl 8192]} (53. Rc1 $16) 53... Kg7 $1 ({Weaker is
} 53... Bxd6 54. Bf6 Bf8 55. Rxf8 Rd1+ 56. Kc2 Rc1+ 57. Kxc1 b4 58. Rh8#) 54.
Kc2 f5 55. gxf6+ (55. Bf6+ $142 Bxf6 56. Rc7 Bxg5 57. Rxd7+ Kf6 58. Rb7) 55...
Kf7 56. Rc6 (56. Rf8+ $18 {is the precise move to win.} Ke6 57. Rg8) 56... Ra7
$16 {[#]} 57. Rc8 (57. Kb1 $1 $16) 57... Ke6 58. Rg8 {Strongly threatening Kb1.
} (58. d7 $5 Rxd7 59. Rc6+ Kf7 60. Rxb6 $14) 58... Rxa2+ {The position is
equal.} 59. Kd3 {Hoping for d7.} Rf2 60. Ke3 Rf1 61. Rxg6 {Weighted Error
Value: White=0.35/Black=0.23} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.4"]
[White "Aronian, Levon"]
[Black "Hovhannisyan, Robert"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2782"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "158"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,158,21,21,29,26,15,21,0,0,0,0,0,0,17,35,29,41,15,31,22,21,27,29,0,0,
7,62,37,35,44,30,41,44,33,39,39,38,29,33,25,35,32,34,33,38,31,26,37,35,14,14,
14,14,14,14,14,14,14,14,13,13,12,14,8,9,6,8,8,8,6,6,5,9,6,7,6,8,8,8,7,7,7,8,7,
7,7,7,7,7,7,30,30,30,30,37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,
37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,37,11,25,27,27,27,28,0,0,
0,0,0,0,0,0,0,0,0,0]} 1. d4 {Krasenkow,M} d5 2. Bf4 c5 3. e3 Nc6 4. Nf3 Nf6 5.
Nbd2 Bg4 6. c3 e6 7. Qb3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3
and 2...Nf6 3 Bf4.} Qc8 8. h3 Bh5 9. Be2 $1 {[%mdl 4] is recently more
successful than 9.g4.} Be7 10. g4 Bg6 11. Nh4 Be4 12. f3 Bg6 {[#]} 13. Nxg6
$146 ({Predecessor:} 13. Bg3 a6 14. Kf2 b5 15. Qd1 Qd8 16. a4 b4 17. a5 c4 18.
Nxg6 hxg6 19. h4 {1/2-1/2 (68) Naiditsch,A (2702)-Meier,G (2621) Karlsruhe/
Baden-Baden 2017 CBM 178 [Krasenkow,M]}) 13... hxg6 14. h4 Qd7 15. dxc5 Bxc5
16. O-O-O O-O-O 17. Ne4 Nxe4 18. fxe4 Bd6 ({Black should play} 18... Qe7 $11)
19. Bxd6 Qxd6 20. exd5 exd5 21. Bf3 {[%cal Rf3d5]} Qc5 22. Kb1 ({Weaker is} 22.
Bxd5 Na5 $17) 22... Na5 23. Qb4 Qxb4 24. cxb4 Nc4 25. Bxd5 Nxe3 26. Rc1+ Kb8
27. Bxf7 Nxg4 28. Bxg6 Ne5 29. Bc2 Rd4 30. h5 Rxb4 31. Rcg1 Rg4 32. Bd1 Rxg1
33. Rxg1 $11 {[%mdl 4096] Endgame KRB-KRN} Rd8 34. Bc2 Rd7 35. a3 Re7 36. Ka2
Nd7 37. Rf1 Kc7 38. Rf4 Ne5 39. Kb3 Nd7 40. Rf3 Kd6 41. Rg3 Nf6 42. Rg6 Ke5 43.
a4 Rc7 44. Rg5+ Kd6 45. Bd3 Rc5 46. Rxg7 {aiming for h6.} Rxh5 47. Rxb7 Nd7 $1
{[%cal Rd7c5] Hoping for ...Nc5+.} 48. Ka2 Nc5 {[%mdl 64] [#] Double Attack}
49. Rb5 a6 50. Ra5 Kc6 51. Bf1 {Threatens to win with b4.} Rf5 52. Be2 {
[#] b4 is the strong threat.} Kb6 53. b4 Rf2 54. Rxc5 Rxe2+ $14 {KR-KR} 55. Kb3
Rh2 56. Rd5 Rh7 57. Rd6+ Kb7 58. Kc4 Rh4+ 59. Kc5 Rh5+ 60. Rd5 Rh7 61. Re5 Rc7+
62. Kd4 Rd7+ 63. Rd5 Rh7 64. a5 Rg7 65. Rd6 Rh7 66. Rb6+ Ka7 67. Re6 Kb7 68.
Kd5 Rd7+ 69. Ke5 (69. Kc4 {keeps more tension.} Rc7+ 70. Kb3 Rh7 71. Rb6+ Ka7
72. Rd6) 69... Rd1 70. Rb6+ Ka7 71. Rd6 (71. Rg6 {with more complications.} Rb1
72. Rg4 Rb3 73. Rd4 Ka8 74. Kd5) 71... Re1+ 72. Kd5 Rd1+ 73. Ke6 $1 Re1+ 74.
Kd7 Re4 {The position is equal.} 75. Rc6 (75. Rb6 {feels hotter.} Rg4 76. Ke7
Rh4 77. Kd6 Rh6+ 78. Kc5) 75... Rxb4 76. Rc7+ Kb8 77. Rc8+ Kb7 78. Rc7+ Kb8 {
( -> ...Rd4+)} 79. Rc8+ Kb7 {Weighted Error Value: White=0.03/Black=0.03}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.5"]
[White "Swiercz, Dariusz"]
[Black "Caruana, Fabiano"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2647"]
[BlackElo "2800"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,85,21,15,21,22,13,13,13,12,12,12,20,18,14,16,14,12,17,15,26,19,21,22,
33,26,47,19,18,16,18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7.
e3 O-O 8. Qb3 c5 9. cxd5 exd5 10. dxc5 Bxc3+ 11. Qxc3 Qxc3+ 12. bxc3 Nd7 {
D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 13. Rd1 Nf6 $1 {
[%mdl 4] is currently scoring better than 13...Nxc5.} 14. Nd4 Bd7 15. f3 Rfc8
16. Nb3 Ba4 17. Rd4 Bxb3 18. axb3 Rxc5 19. Kd2 {[#]} Rac8 $146 ({Predecessor:} 
19... Ra5 20. Bd3 Nd7 21. Kc1 Rc5 22. Kb2 Re8 23. Re1 Ne5 24. b4 Nxd3+ 25. Rxd3
Rb5 {1-0 (43) Carlsen,M (2863)-Ding,L (2791) chess24.com INT 2020}) 20. Bd3 a5
({Don't play} 20... Rxc3 $6 {[#]} 21. Bc4 $1 $16) 21. Rc1 Kf8 22. g4 Ke7 23. h4
g6 24. b4 axb4 {The position is equal.} 25. Rxb4 R8c7 26. Rcb1 Rxc3 27. Rxb7 h5
28. g5 (28. R1b4 {is interesting.} hxg4 29. fxg4 Ke6 30. R7b6+ R7c6 31. g5)
28... Nd7 {[#] Threatens to win with ...Rxd3+!} 29. Rxc7 (29. R7b5 {keeps more
tension.} Ne5 30. Be2 Rc2+ 31. Kd1 Kd6 32. Rb6+) 29... Rxc7 $11 {[%mdl 4096]
Endgame KRB-KRN} 30. f4 Ra7 31. Bc2 Kd6 32. e4 dxe4 33. Bxe4 Ra4 34. Ke3 Ra3+
35. Kd4 Rh3 36. Rh1 Rg3 37. Rd1 Nf8 38. f5 Rh3 39. Ra1 gxf5 40. Ra6+ Ke7 41.
Ra7+ Kd6 42. Ra6+ Ke7 43. Ra7+ {Weighted Error Value: White=0.02/Black=0.02}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.6"]
[White "Vachier-Lagrave, Maxime"]
[Black "Demchenko, Anton"]
[Result "1-0"]
[ECO "C60"]
[WhiteElo "2763"]
[BlackElo "2651"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,55,25,30,30,37,37,44,30,37,10,23,12,31,13,13,8,21,24,8,13,16,0,39,7,
26,28,0,-9,0,0,111,111,255,261,314,330,319,325,408,412,1145,1145,1123,1029,
1058,1024,1556,1470]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. c3 Bg7 5. d4 exd4 6.
cxd4 {C60: Ruy Lopez: Unusual Black 3rd moves and 3...g6.} a6 7. Ba4 b5 8. Bc2
{White is slightly better.} d6 9. h3 Nf6 10. O-O Bb7 11. a3 O-O 12. Re1 {[#]}
Re8 $146 ({Predecessor:} 12... Na5 13. Nc3 Re8 14. d5 Nc4 15. Rb1 c5 16. dxc6
Bxc6 17. b3 Ne5 18. Nd4 Bb7 {0-1 (31) Valantiejus,V (2048)-Klabis,R (2333)
Lithuania 2019}) 13. Bg5 h6 14. Bh4 Ne7 15. Nc3 Nh5 16. e5 Qd7 17. d5 (17. e6
$5 fxe6 18. Bxe7 Rxe7 19. Nh4 $11) 17... Nf4 {[%cal Re7d5]} 18. e6 fxe6 19.
dxe6 Qc6 {[#]} (19... Nxe6 $11 20. Bxe7 Bxc3 21. bxc3 Rxe7) 20. Re4 $1 $16 {
[%cal Re4f4]} Ned5 {A mistake that costs the game.} (20... Nfd5 $16) 21. Nxd5
$18 Nxd5 22. Rg4 Rxe6 23. Bb3 Bxb2 24. Rb1 ({Weaker is} 24. Nd4 Bxd4 25. Rxd4
Nc3 $11) 24... Bxa3 (24... Bc3 $142 25. Rc1 Rae8) 25. Nd4 {[%mdl 64] Double
Attack. White is clearly winning.} Qe8 26. Nxe6 Qxe6 27. Qd2 h5 {[#]} 28. Re1
$1 {[%mdl 512] Weighted Error Value: White=0.05/Black=0.30} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.7"]
[White "Dubov, Daniil"]
[Black "Donchenko, Alexander"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2714"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,93,15,8,14,20,25,5,4,13,43,45,31,30,51,23,21,29,27,15,18,10,20,9,29,
28,23,21,25,16,16,16,14,16,17,15,27,9,10,13,14,14,16,20,20,20,31,35,30,31,31,
31,54,0,0,0,0,-68,-59,-56,-27,-79,-79,-77,-76,-90,-81,-87,-74,-75,-17,-21,-17,
-22,-14,-8,0,-106]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6
Qxf6 7. e3 O-O 8. Rc1 dxc4 9. Bxc4 c5 10. O-O {Black should prevent Ne4.} cxd4
{D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 11. Ne4 Qe7 12. a3
Ba5 13. Qxd4 Nc6 14. Qc5 Qxc5 15. Nxc5 {[#]} Bb6 $146 ({Predecessor:} 15... Rd8
16. Rfd1 Rxd1+ 17. Rxd1 Bb6 18. Ne4 a6 19. Bb3 Bc7 20. Rc1 Bd7 21. Nc5 Be8 22.
Nxb7 {1-0 (62) Melkumyan,H (2633)-Nguyen,N (2629) Doha 2016}) 16. Bd3 (16. Na4
{looks sharper.} Bd8 17. Bb5 Ne7 18. Rfd1 a6 19. Be2) 16... Bxc5 17. Rxc5 Bd7
18. Rfc1 Rfc8 19. Be4 Rab8 20. h4 Kf8 21. Bxc6 Rxc6 22. Ne5 Rd6 23. Rc7 Ke7 24.
h5 Rd5 25. f4 f6 26. e4 Rd4 27. Nf3 Rd3 28. Kf2 Kd8 29. g4 Rc8 30. Rxc8+ Bxc8
$11 {[%mdl 4096] Endgame KRB-KRN} 31. e5 Bd7 32. exf6 gxf6 33. g5 Bc6 {[#]} 34.
Rc3 $1 Rd5 {[%cal Rf6g5]} (34... Rxc3 35. bxc3) 35. Kg3 ({Reject} 35. gxh6 Rxh5
36. Nd4 Bd5 $15) ({White should try} 35. gxf6 $14 Rf5 36. Ne5) 35... fxg5 36.
fxg5 Rf5 37. gxh6 ({White should play} 37. g6 $11 Ke7 38. Kg4) 37... Rxh5 $15
38. Nd4 Bd7 39. Nf3 (39. Rb3 $11 {remains equal.}) 39... Rxh6 $17 40. Ne5 {
[#] Hoping for Nf7+.} Be8 41. Kf4 Rh2 42. b4 Re2 43. Re3 Rc2 (43... Rxe3 $17
44. Kxe3 Bc6) 44. Nf3 $11 {The position is equal.} Rf2 {...Bc6 is the strong
threat.} 45. Ke5 $1 Ke7 46. Nd4 Bd7 47. Ke4 {Weighted Error Value: White=0.10/
Black=0.08} (47. Rg3 $11 {keeps the balance.}) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.8"]
[White "Fedoseev, Vladimir"]
[Black "Gukesh D"]
[Result "1/2-1/2"]
[ECO "C79"]
[WhiteElo "2704"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,71,46,46,41,51,102,38,44,40,38,35,46,48,45,8,28,9,8,10,5,4,7,0,19,19,
56,66,64,62,88,82,57,-51,-55,-55,-52,-150,93,-143,-134,-172,-166,-175,-167,
-177,-39,-100,-51,-95,0,0,0,0,0,0,0,-45,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4.
Ba4 Nf6 5. O-O d6 6. Bxc6+ bxc6 7. d4 exd4 8. Nxd4 Bd7 {C79: Ruy Lopez:
Steinitz-type lines with 3...a6 4 Ba4 Nf6 5 0-0 d6.} 9. Qf3 {9.Nc3 is not
played anymore.} Bg4 {[#]} ({Better is} 9... Be7 $14) 10. Qd3 $146 (10. Qg3 $1
$16) ({Predecessor:} 10. Qc3 c5 11. Nb3 Be7 12. Re1 O-O 13. Na3 Qd7 14. Nc4
Rfe8 15. Bd2 Bf8 16. Qd3 {1/2-1/2 (40) Benko,I-Ergle,A Leningrad 1962}) 10...
c5 {White is slightly better.} 11. Nc6 Qd7 12. Na5 Be7 13. Nc3 O-O 14. f4 {
aiming for f5.} d5 15. Nxd5 Nxd5 16. Qxd5 Qxd5 17. exd5 Bf6 18. Be3 Bxb2 19.
Rab1 Bc3 20. Nc6 Be2 21. Bxc5 Bxf1 22. Kxf1 Rfe8 23. Ne7+ (23. Rb7 $14) 23...
Kh8 $15 24. Rb7 Ba5 25. Nc6 {[#]} (25. c4 $15) 25... Re1+ $1 $17 26. Kf2 {[#]}
Rc1 $1 27. Ba7 (27. Ke3 Rxc2) 27... Rxc2+ {[%mdl 64] Double Attack} 28. Kf3
Rxa2 29. Bb8 Kg8 (29... h6 $19 30. h4 Kh7) 30. g4 (30. Bxc7 $15 Be1 31. d6 Rf2+
32. Ke3) 30... Kf8 31. g5 Ke8 (31... h5 $17 32. gxh6 gxh6) 32. d6 $1 $11 cxd6 (
{But not} 32... Rxh2 $2 33. Nxa5 (33. dxc7 Bxc7 34. Bxc7 Rd2 $14) 33... cxd6
34. Bxd6 $18) 33. Bxd6 Bd8 34. Nxd8 Rxd8 35. Re7+ Kf8 36. Rd7+ {Weighted Error
Value: White=0.20/Black=0.20} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.9"]
[White "Maghsoodloo, Parham"]
[Black "Tari, Aryan"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2701"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,76,4,12,10,19,10,13,9,7,7,31,8,5,0,18,13,0,0,27,8,0,-30,0,-20,0,0,0,0,
0,0,0,0,0,0,0,0,0,-4,-16,-44,0,-194,-182,-180,-164,-156,-102,-213,-175,-186,
-172,-297,-283,-636,-611,-1127,-1048,-828,-828,-828,-828,-809,-793,-29978,
-29979,-29979,-29980,-29986,-29987]} 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4
5. Qa4+ Bd7 6. Qxc4 {A13: English Opening: 1...e6.} c5 7. Ne5 Qc8 8. Qd3 $1 {
The position is equal. 8.Qd3 scores better than 8.0-0.} Bc6 9. Nxc6 Nxc6 10.
Nc3 Be7 {[#]} 11. Qb5 $146 (11. O-O {is more complex.} O-O 12. b3 Rd8 13. Qb1
Rb8 14. d3) ({Predecessor:} 11. O-O O-O 12. b3 Rd8 13. Qb1 Nd5 14. Nxd5 exd5
15. Bb2 Qe6 16. e3 Bf6 17. Rc1 {1-0 (62) Nepomniachtchi,I (2792)-Aronian,L 
(2781) Paris 2021}) 11... O-O 12. Bxc6 bxc6 13. Qa4 e5 14. d3 Rb8 15. Qc2 Qf5
16. Ne4 Nxe4 17. dxe4 Qh3 18. Bd2 Qg2 {[%cal Rg2h1]} 19. Rf1 Qxh2 20. O-O-O Qh3
21. Qc4 Rfd8 22. Bc3 $1 Qg2 23. Kc2 Bf6 24. b3 h5 25. a4 $2 {[#]} (25. Rc1 $11
{and White stays safe.}) 25... Rxd1 $1 $19 26. Rxd1 Qxf2 27. Rd7 Bg5 (27... Rf8
$142 28. Qd3 c4 29. Qxc4 Qxg3) 28. Qd3 (28. Bxe5 $17 Rb4 29. Qd3) 28... Be3 29.
Bxe5 Re8 $40 {[%mdl 128] White is in trouble.} 30. Bb2 (30. Rd8 $142 Rxd8 31.
Qxd8+ Kh7 32. Qd3) 30... Qxg3 31. Rxa7 $2 (31. Bc1 Bf4 32. Qf3 Qxf3 33. exf3
Bxc1 34. Kxc1) 31... h4 32. Re7 Rxe7 33. Qd8+ Kh7 34. Qxe7 Qg4 {And now ...h3
would win.} 35. Kd3 {[#]} h3 $1 {Hoping for ...h2.} 36. Bxg7 (36. Qxf7 h2)
36... Qxg7 {Black mates.} 37. Qh4+ Qh6 38. Qe7 {[#]} Qh5 $1 {[%mdl 32768]
Weighted Error Value: White=0.60/Black=0.06. An unexpected result.} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.10"]
[White "Artemiev, Vladislav"]
[Black "Sasikiran, Krishnan"]
[Result "1/2-1/2"]
[ECO "A28"]
[WhiteElo "2699"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,59,0,-1,0,-12,21,29,16,14,8,21,9,0,6,6,22,0,0,0,10,-7,8,0,0,-18,23,
25,17,14,19,8,16,20,25,-10,0,0,0,0,0,-20,-18,-15,-9,-20,-6,-12,0,-25,0,-8]} 1.
c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 d5 5. cxd5 Nxd5 6. g3 Bc5 {A28: English
Opening: Four Knights Variation.} 7. Bg2 Nde7 8. O-O O-O {White has an edge.}
9. a3 a5 10. Bd2 {[#]} Be6 $146 ({Predecessor:} 10... Nf5 11. Rc1 Be7 12. Na4
f6 13. Qb3+ Kh8 14. e3 Qe8 15. Ne1 Bd7 16. Nc5 {1/2-1/2 (16) Kohlweyer,B (2419)
-Vedder,R (2229) Vlissingen 2006}) 11. Ne4 Bb6 12. b4 f6 13. Qc2 Nf5 14. e3 Qd7
15. Rfc1 Rfd8 16. Bf1 Nd6 17. Be1 Nf5 (17... Nxe4 {with more complications.}
18. dxe4 Qf7 19. b5 Na7 20. Nd2 Nc8) 18. Nc5 Bxc5 19. Qxc5 axb4 20. axb4 Rxa1
21. Rxa1 Nce7 22. Rc1 c6 23. Qa5 Nd6 24. Nd2 Nd5 25. Qa3 Nb5 26. Qb2 Bh3 27.
Be2 Bg4 28. Bf1 Bh3 29. Be2 Bg4 30. Bf1 {Not much happened in this game. 
Weighted Error Value: White=0.06/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.11"]
[White "Deac, Bogdan-Daniel"]
[Black "Navara, David"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2643"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,86,13,11,13,13,13,22,13,8,6,6,9,8,11,0,0,0,25,16,54,-19,0,-6,0,-20,
-16,-8,0,0,0,-30,0,-7,-22,-53,-43,-34,-38,-42,-40,-41,-39,-29,-18,-15,-21,-27,
-15,-11,-39,-11,-12,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6
3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Bf6
10. Re1 Re8 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 11. Bf4 Rxe1 12. Qxe1
Ne8 13. Qc3 d5 14. Nd2 Bf5 15. Re1 c6 {[#]} 16. Nb3 $146 ({Predecessor:} 16.
Bd3 Bxd3 17. Qxd3 Nc7 18. Nf3 Ne6 19. Be5 Be7 20. c3 Qb6 21. Re2 Re8 22. h4 {
1/2-1/2 (30) Tari,A (2642)-Karjakin,S (2758) Stavanger 2021}) 16... Nc7 17. Be5
Ne6 18. Na5 Qe7 19. b4 ({Better is} 19. Bxf6 $1 $14 gxf6 20. Qg3+ Kh8 21. c3)
19... Be4 20. Nb3 {[%cal Ba5b3,Bb3c1,Bc1e2,Be2g3,Bg3h5,Bh5f6][%mdl 32]} Rd8 21.
a3 Bxe5 22. dxe5 d4 23. Qd2 Bd5 24. Nc1 c5 25. f4 g6 26. Ne2 b6 27. f5 gxf5 28.
Ng3 $1 f4 29. Nh5 Qg5 30. Nf6+ Kg7 31. Qf2 Kh8 32. Bd3 h6 33. bxc5 bxc5 34.
Nxd5 Rxd5 {The position is equal.} 35. Qe2 {[%cal Re2e4] And now Qe4 would win.
} f3 (35... Nf8 {is more complex.} 36. Qe4 Rd8 37. Qb7 Kg8 38. Kh1 Re8) 36.
Qxf3 $40 {[%mdl 192] [#] Double Attack. White has some attack.} Rxe5 37. Rxe5
Qxe5 38. Qxf7 {[%csl Gd3][%cal Rf7h7]} Qe3+ 39. Kf1 {[%csl Gd3][%cal Rf7h7]}
Qc1+ 40. Kf2 {[%csl Gd3][%cal Rf7h7] [#]} Qe3+ 41. Kf1 {[%csl Gd3][%cal Rf7h7]}
Qc1+ 42. Kf2 {[%csl Gd3][%cal Rf7h7]} Qe3+ 43. Kf1 {[%csl Gd3][%cal Rf7h7]}
Qc1+ {Weighted Error Value: White=0.08/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.12"]
[White "Chigaev, Maksim"]
[Black "Wojtaszek, Radoslaw"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2639"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,86,20,24,10,27,27,25,0,7,7,13,0,0,0,2,-12,42,0,-6,0,0,-26,-21,-18,
-13,-55,-52,-45,-45,-50,-47,-73,-60,-63,-59,-71,-63,-71,-70,-101,-31,-39,-48,
-39,-48,-76,-76,-73,-73,-102,-77,-80,-79,-85,-54,-68,-86,-145,-141,-140,-147,
-256,-40,-40,0,-214,0,-40,-40,-40,-40,-40,-35,-46,-14]} 1. e4 e5 2. Nf3 Nc6 3.
Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bc5 7. c3 $1 {[%mdl 4] is recently more
successful than 7.0-0.} d6 8. Bg5 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual
lines.} h6 9. Bh4 Rb8 {[#]} 10. a3 $146 {White has an edge.} ({Predecessor:} 
10. Nbd2 Bb6 11. Nf1 g5 12. Bg3 Be6 13. Ne3 O-O 14. h4 g4 15. Nh2 h5 16. Nd5
Bxd5 17. exd5 {0-1 (36) Matinian,N (2701)-Kovalev,V (2894) Chess.com INT 2020})
10... Bb6 11. Nbd2 Be6 12. Bc2 g5 13. Bg3 Qe7 $36 {[%mdl 2048] Black is more
active.} 14. h3 Nh7 (14... Kf8 $11) 15. Nh2 Nf8 16. Qh5 Qf6 17. Nhf1 Ng6 18.
Ne3 Nce7 19. Bb3 Bxb3 20. Nxb3 Nf4 21. Bxf4 gxf4 22. Nd5 Nxd5 23. exd5 Rg8 24.
Qf3 Qh4 25. Ke2 Ke7 26. Rag1 f5 (26... Rg6 $17 27. d4 Rbg8) 27. g3 fxg3 28.
Rxg3 Rg5 29. Nd2 Rf8 {[#] aiming for ...e4!} 30. Rxg5 hxg5 31. Qg2 Qh5+ 32. Ke1
Rh8 33. Rg1 Rg8 34. Nf1 g4 35. hxg4 ({White should play} 35. Ng3 gxh3 36. Qh2)
35... Rxg4 $17 ({Not} 35... Qxg4 36. Qxg4 fxg4 37. Nh2 $14) 36. Ng3 Qg5 37. Ke2
(37. Kd1 $17 {only move.} Kd8 38. Rh1) 37... Rf4 $2 {[#]} (37... Kd8 $19 {
And now ...f4 would win.} 38. Qh2 Rh4) 38. Nh1 $1 $15 Rg4 (38... Qh5+ $15 39.
Kd2 Rg4) 39. Ng3 $19 Rf4 $2 (39... Kd8 $19 {Threatens to win with ...f4.} 40.
Qh2 Rh4) 40. Nh1 $1 $15 Qxg2 {Black is slightly better.} 41. Rxg2 Rh4 42. Ng3 {
[%cal Rg3f5]} Kf6 43. Nf1 Rh8 {Weighted Error Value: White=0.13/Black=0.30}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.13"]
[White "Korobov, Anton"]
[Black "Moussard, Jules"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2690"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,68,30,27,20,45,35,56,45,76,67,68,66,90,59,46,48,70,81,86,48,63,59,43,
39,43,50,45,48,59,57,45,0,25,0,22,-33,-33,-33,-33,-33,-26,-33,-26,-26,-26,-48,
0,-41,-26,-50,-26]} 1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 Be7 5. O-O O-O 6. d4 a5
7. Nbd2 c6 8. Qc2 b6 9. e4 Ba6 10. b3 Nbd7 11. Bb2 {E09: Closed Catalan: Main
Line: 7 Qc2 c6 8 Nbd2.} Rc8 {[#]} 12. Rad1 $146 ({Predecessor:} 12. Rfe1 h6 13.
Rad1 Bb4 14. a3 Be7 15. Ne5 Nxe5 16. dxe5 Nd7 17. cxd5 cxd5 18. Qb1 d4 {
1/2-1/2 (43) Kozionov,K (2454)-Shaposhnikov,E (2570) Ekaterinburg 2019}) 12...
a4 13. Rfe1 {White is slightly better.} h6 14. bxa4 Qc7 15. e5 Ne8 16. a5 dxc4
17. Nxc4 bxa5 18. Nfd2 Nb6 19. Rc1 Nd5 20. Ne4 Rb8 {[#] White must now prevent
...Bxc4.} 21. Ba1 Qd8 22. Red1 Bb5 23. h4 a4 24. Nc5 Nec7 25. Bf1 Na6 26. Ne4
a3 27. h5 ({Better is} 27. Ned6 $11) 27... Nb6 $15 28. Nxb6 {[#] And now Nc4
would win.} Bxf1 29. Kxf1 {Hoping for Nc4.} Nb4 30. Qe2 {aiming for Nc4.} Qxb6
31. Bc3 Nd5 32. Be1 Qb5 33. Rd3 Qa6 34. Rd2 Qa4 {Weighted Error Value: White=0.
15/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.14"]
[White "Dreev, Aleksey"]
[Black "Kryvoruchko, Yuriy"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2635"]
[BlackElo "2686"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,61,8,0,12,2,0,0,1,0,0,0,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-194]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O
5. a3 Bxc3+ 6. Qxc3 b6 {6...d5 is the modern continuation.} 7. Bg5 Bb7 8. e3 {
The position is equal.} d6 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} 9.
Ne2 Nbd7 10. Qd3 Ba6 11. Nc3 d5 12. Qd1 Bxc4 13. Bxc4 dxc4 14. Qa4 h6 15. Bh4
c5 16. Qxc4 cxd4 17. Qxd4 g5 18. Bg3 Nc5 19. Qxd8 Rfxd8 20. Ke2 Nfe4 21. Nxe4
Nxe4 {[#]} 22. Rhd1 $146 ({Predecessor:} 22. f3 Rd2+ 23. Ke1 Nxg3 24. Kxd2 Rd8+
25. Kc2 Nxh1 26. Rxh1 Kg7 27. Rd1 {1/2-1/2 (27) Bendana Guerrero,G (2462)-Joao,
N (2578) ICCF email 2008}) 22... Rac8 23. Rxd8+ Rxd8 24. f3 Nxg3+ 25. hxg3 $11
{[%mdl 4096] Endgame KR-KR} Rc8 {With the idea ...Rc2+.} 26. Kd3 Rd8+ 27. Ke2
Rc8 {Black wants to play ...Rc2+.} 28. Kd3 Rd8+ 29. Ke2 Rc8 {next ...Rc2+ is
good for Black.} 30. Kd3 Rd8+ 31. Ke4 $2 {Weighted Error Value: White=0.01/
Black=0.01} (31. Ke2 $11 {and White is okay.}) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.15"]
[White "Predke, Alexandr"]
[Black "Ponomariov, Ruslan"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2666"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,16,16,9,16,14,13,15,12,9,19,10,32,0,39,14,38,8,11,11,16,-28,-4,-8,
-4,-4,-4,-4,-6,-5,0,0,0,-10,-10,-10,-10,-10,-10,-8,-9,-6,0,0,0,0,0,-2,0,0,0,0,
0]} 1. c4 c6 2. d4 d5 3. Nf3 Nf6 4. Qc2 g6 5. e3 Bg7 6. Be2 {D11: Slav Defence:
3 Nf3 sidelines and 3...Nf6 4 e3 Bg4.} O-O 7. O-O {[#]} c5 $146 ({Predecessor:
} 7... Bf5 8. Qb3 Qb6 9. Nc3 Nbd7 10. h3 h6 11. cxd5 Qxb3 12. axb3 Nxd5 13. Bd2
N5b6 {1/2-1/2 (40) Predke,A (2666)-Motylev,A (2624) Ufa 2021}) 8. cxd5 cxd4 9.
Nxd4 Nxd5 10. Rd1 Qb6 11. Qc4 Nf6 12. Nc3 Bd7 13. Na4 (13. e4 $5 {[%cal Re4e5]}
) 13... Qa6 14. Qxa6 Nxa6 15. Nb5 Rfc8 16. Bd2 {The position is equal.} Ne4 17.
Be1 Nac5 18. Nxc5 Nxc5 19. Nc3 Bc6 20. Rac1 Ne4 21. Bd3 Nxc3 22. Bxc3 Ba4 23.
b3 $1 {[#]} Bxb3 $1 24. axb3 {Bb4 is the strong threat.} Bxc3 25. Be4 Rc7 (
25... Rab8 {looks sharper.} 26. Rd7 Bb4 27. Rxc8+ Rxc8 28. g4 a5) 26. Bxb7 Rxb7
27. Rxc3 Rab8 28. g3 Rxb3 29. Rxb3 Rxb3 30. Rd7 e6 {A rather calm draw. 
Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.16"]
[White "Keymer, Vincent"]
[Black "Sargissian, Gabriel"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2630"]
[BlackElo "2664"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,115,16,14,12,14,14,22,34,25,28,22,14,0,0,16,7,-8,0,-14,0,0,26,26,17,
20,11,13,28,8,16,12,13,7,19,14,28,20,54,52,84,84,113,74,74,74,74,74,74,74,77,
76,87,87,87,87,86,85,102,77,93,73,75,62,62,57,57,57,57,57,57,57,57,57,62,46,77,
54,54,31,31,31,35,27,27,17,25,8,8,8,72,72,72,72,72,47,150,143,143,118,118,118,
118,118,136,103]} 1. d4 {Gelfand,Boris} Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5.
Qa4+ Nc6 6. e3 O-O 7. Bd2 dxc4 {D38: Queen's Gambit Declined: Ragozin Defence 
(4 Nf3 Bb4).} 8. Bxc4 Bd6 9. Qc2 e5 {The position is equal.} 10. dxe5 Nxe5 11.
Nxe5 Bxe5 12. O-O b6 13. f4 {[#]} Bd6 $146 ({Predecessor:} 13... Bxc3 14. Bxc3
Bb7 15. Bd3 Re8 16. Rae1 Be4 17. Bxe4 Nxe4 18. Be5 Nd6 19. e4 Qe7 {1-0 (62)
Gelfand,B (2676)-Leko,P (2663) chess24.com INT 2020 CBM 197 [Gelfand,Boris]})
14. Rae1 Bb7 15. h3 Bc5 16. Kh2 Ne4 17. Nxe4 Bxe4 18. Qxe4 Qxd2 19. Re2 $40 {
[%mdl 128] Black needs to defend precisely.} Qd7 20. Qf3 Kh8 21. e4 f6 22. h4
Bd4 23. g3 g6 24. Kg2 h5 25. f5 Qg7 26. e5 Bxe5 27. Bd3 (27. Re3 {with more
complications.} gxf5 28. Qxh5+ Qh7 29. Qe2 Qg6 30. Bd3) 27... gxf5 28. Qxh5+
Qh7 29. Rxf5 Qxh5 30. Rxh5+ Kg8 31. Re4 {[#] And now Bc4+ would win.} Kf7 32.
Rh7+ Ke6 33. Rxc7 Rad8 34. Rc3 Kf7 35. Bc4+ Kg7 36. Rc2 Rd6 37. Be2 Rfd8 38.
Kf3 Rd2 39. Rec4 f5 40. b3 Rxc2 41. Rxc2 $14 {[%mdl 4096] Endgame KRB-KRB} Rd4
42. Kf2 Rd5 43. h5 Rc5 44. Rd2 Rc3 45. Rd7+ Kh6 46. Rxa7 Bxg3+ 47. Kg2 Be5 48.
Re7 Bd4 49. Re6+ Kg5 50. h6 Re3 (50... Rc2 $11) 51. Rxe3 $16 Bxe3 {KB-KB} 52.
h7 Bd4 53. Bd3 Kh6 (53... Kg6 $14) 54. Bxf5 Kg7 55. Kf3 b5 56. Ke4 Bc5 57. Kd5
Ba3 58. b4 {Weighted Error Value: White=0.07/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.17"]
[White "Shirov, Alexei"]
[Black "Neiksans, Arturs"]
[Result "1-0"]
[ECO "C84"]
[WhiteElo "2659"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,101,12,16,10,20,20,16,0,0,5,20,10,44,21,29,30,22,0,7,0,0,0,0,0,0,0,0,
0,0,0,46,37,42,43,65,70,65,63,58,0,0,0,108,103,163,95,237,224,295,295,295,254,
266,262,329,333,306,284,310,298,281,341,351,341,336,336,341,332,323,338,314,
332,308,319,436,428,420,406,797,773,661,707,978,1002,1004,956,691,691]} 1. e4
e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. a4 b4 9.
Nbd2 {C84: Closed Ruy Lopez: Unusual White 6th moves.} O-O 10. Nc4 Rb8 11. c3 {
The position is equal.} bxc3 12. bxc3 h6 {[#]} 13. Ne3 $146 ({Predecessor:} 13.
Ba2 Be6 14. Re1 Re8 15. h3 Bf8 16. Bd2 Qc8 17. Qc2 Ne7 18. d4 Ng6 19. Kh2 exd4
20. Nxd4 {1-0 (51) McShane,L (2687)-Brunello,S (2562) Reykjavik 2015}) 13...
Re8 14. Qc2 Na5 15. Ba2 Bf8 16. Bd2 c6 17. Rab1 Rxb1 18. Rxb1 d5 19. exd5 cxd5
20. d4 Nc6 21. Qb3 {[%cal Re3d5]} e4 22. Ne1 {[%cal Re3d5]} Be6 23. Qb7 Qa8 24.
N1c2 Na5 25. Qxa8 Rxa8 26. Rb6 Nd7 27. Rxe6 fxe6 $11 28. Nxd5 Ra7 (28... Rb8
$11 29. Nc7 Rb2 30. Bxe6+ {[%mdl 64] Double Attack} Kh8 31. Bxd7 Rxc2) 29. Nf4
$16 Nb6 {[#]} (29... Kh8 $16 {was called for.}) 30. Nxe6 (30. Ne3 $1 $18) 30...
Be7 {[#] Loses the game.} (30... Nbc4 $16) 31. Ne3 $1 $18 {Hoping for c4.} Kh8
32. c4 Nc6 33. a5 Nd7 34. c5 {[%cal Bc4c5,Bc5c6][%mdl 32]} Nf8 35. Nxf8 Bxf8
36. Bc3 Rb7 37. d5 Nxa5 38. c6 {[%mdl 64] Zwischenzug} Rb5 39. c7 Rc5 40. Bxa5
Rc1+ 41. Nf1 Bd6 42. g4 Bxc7 43. Bxc7 Rxc7 44. Ne3 Rc1+ 45. Kg2 Kg8 46. Bc4 Ra1
(46... Kf7 $142 47. Bxa6 Kf6) 47. d6+ {White is clearly winning.} Kf8 48. Be6
a5 49. d7 {[%cal Rd7d8]} Ke7 50. Nf5+ Kd8 51. Nd6 {Weighted Error Value:
White=0.08/Black=0.27} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.18"]
[White "Petrosyan, Manuel"]
[Black "Anton Guijarro, David"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2605"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,89,10,10,2,0,5,10,4,19,14,19,14,23,8,71,8,25,19,14,-23,-37,-38,-45,
-41,-26,-66,0,0,0,0,634,664,646,648,687,684,665,645,627,617,617,447,522,529,
517,502,486,441,492,365,729,458,700,725,719,712,717,702,687,654,644,605,1016,
1001,994,954,881,0,844,0,829,783,760,760,29989,29990,29990,29991,29991,29992,
29992,29993]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. b3 Bd6 5. Bb2 O-O 6. Nc3 {
A13: English Opening: 1...e6.} Re8 7. Rc1 $5 {[%mdl 4] Exploring less charted
territory.} a6 {[#]} 8. g3 $146 {The position is equal.} ({Predecessor:} 8. d4
b6 9. g3 Bb7 10. cxd5 Nxd5 11. Nxd5 Bxd5 12. Bg2 Bb4+ 13. Bc3 Ba3 14. Ra1 {
0-1 (30) Olivier,P (2215)-Anton Guijarro,D (2651) Struga 2021}) 8... c5 9. Bg2
Nc6 10. cxd5 exd5 11. O-O b5 {[#]} (11... Bg4 $11 {keeps the balance.}) 12. a3
(12. Ng5 $1 $16 Bg4 13. Qc2) 12... Bb7 13. Ne2 Rc8 14. Nf4 d4 15. b4 cxb4 16.
axb4 dxe3 17. fxe3 {Strongly threatening Ng5.} Nxb4 (17... Bxf4 $15 18. gxf4
Nxb4 19. Rxc8 Qxc8) 18. Rxc8 $1 $11 Bxc8 19. Ng5 $1 {Nh5 is the strong threat.}
Qe7 $2 {[%mdl 8192] Black is now going downhill.} (19... Bxf4 $11 20. Rxf4 Nbd5
) 20. Nh5 $18 {[%cal Rb2f6]} Be5 {[#]} 21. Qb1 {Nxf6+ would kill now.} Bxb2 (
21... Ne4 22. Nxe4) 22. Nxf6+ Qxf6 23. Rxf6 Bxf6 24. Qxh7+ ({Weaker is} 24.
Qxb4 Bxg5 25. Bc6 Rd8 $16) 24... Kf8 25. Qh5 {[%csl Gg5][%cal Rh5f7]} Be6 26.
Nh7+ Kg8 27. Nxf6+ gxf6 28. Be4 Kg7 29. h4 Rd8 $2 (29... Rh8 30. Qc5 Na2) 30.
Qh7+ Kf8 31. h5 Ke7 32. h6 a5 33. Bf5 Bd5 34. e4 Bc4 35. Qg7 Rxd2 {Now ...Rd1+
and Black clings on.} 36. h7 Rd1+ 37. Kh2 Rd2+ 38. Kg1 Rd1+ 39. Kh2 Rd2+ 40.
Kh3 Bf1+ 41. Kg4 Nd3 42. h8=Q {[%csl Gh8][%cal Rg7f6] White mates.} Ne5+ 43.
Kf4 {[%csl Gh8][%cal Rg7f6]} Rf2+ 44. Ke3 {[%csl Gh8][%cal Rg7f6]} Re2+ 45. Kd4
{[%csl Gh8][%cal Rg7f6] Weighted Error Value: White=0.44/Black=0.56} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.19"]
[White "Howell, David W L"]
[Black "Brkic, Ante"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2658"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,0,0,-14,0,-8,18,25,7,6,0,0,0,0,0,0,0,-9,-8,-11,-6,-20,-22,-27,-25,
-32,-24,-16,0,0,-5,-15,0,-17,-17,-17,-17,-17,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0]} 1. Nf3 d5 2. g3 g6 3. c4 dxc4 4. Na3 Bg7 5. Nxc4 Nc6 6. d3 {A09: Réti
Opening: 1 Nf3 d5 2 c4.} e5 7. Bd2 Nf6 8. Bc3 Nd5 9. Bxe5 Nxe5 10. Ncxe5 O-O $1
11. Bg2 Qe7 12. d4 c5 13. O-O cxd4 14. Nd3 {[#]} Bf5 $146 ({Predecessor:} 14...
Be6 15. a3 Rad8 16. Qa4 a6 17. Rac1 Rfe8 18. Rc2 Nb6 19. Qb4 Qxb4 20. axb4 Bb3
{1/2-1/2 (58) Almasi,Z (2682)-Harikrishna,P (2729) Hungary 2019}) 15. Nxd4 Bxd4
16. Bxd5 Rad8 17. Bf3 b6 {[%mdl 1024] Black has compensation.} 18. Rb1 Qf6 {
The position is equal.} 19. b3 Rfe8 20. Rc1 Rd6 21. Rc7 b5 22. Kg2 Bb6 23. Rc2
h5 24. h4 Qe6 25. Rh1 Red8 26. Qc1 Bxd3 27. exd3 Rxd3 28. Re1 Qf6 29. Be4 R3d6
30. Bf3 Rd3 31. Be4 R3d6 32. Bf3 {An uneventful encounter.  Weighted Error
Value: White=0.02/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.20"]
[White "Indjic, Aleksandar"]
[Black "Oparin, Grigoriy"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2612"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,77,14,37,44,46,49,46,34,52,57,53,31,46,38,44,0,0,0,35,41,37,0,0,-15,
12,8,20,14,18,18,17,0,7,-18,-19,-27,-27,-33,0,0,0,0,0,-16,-9,-6,0,-15,0,0,0,8,
12,10,10,9,12,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3
dxc4 5. e4 b5 6. e5 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3.} Nd5 7.
Nxb5 Nb6 8. Be2 {White is slightly better.} Nc6 $1 {The main line 8...Nc6
scores better than 8...Be7.} 9. O-O Be7 10. Qd2 Bb7 11. Rd1 Qd7 12. b3 cxb3 13.
axb3 {[#]} a6 $146 ({Predecessor:} 13... Nb4 14. Nc3 O-O 15. Bb2 a5 16. Rac1
Rfc8 {1/2-1/2 (16) Urkedal,F (2564)-Hillarp Persson,T (2521) Fagernes 2021})
14. Nc3 Nb4 15. Ba3 O-O 16. Na4 Nxa4 17. Bxb4 Bxb4 18. Qxb4 {[%mdl 64] [#]
Double Attack} Nb6 19. Ra5 Rfd8 20. h4 h6 21. h5 Rab8 22. Rc1 ({Much worse is} 
22. Bxa6 Bxf3 23. gxf3 Nd5 $17) 22... Nd5 23. Qd2 Ne7 24. Rac5 $1 {The
position is equal.} Bc6 25. R1c3 Rb6 26. Ne1 Rdb8 ({Of course not} 26... Qxd4
$6 27. Rd3 $14) 27. Bd1 Rb4 28. R3c4 Rxc4 29. bxc4 Rd8 30. Bf3 Bxf3 31. Nxf3
Nc6 32. d5 exd5 33. Rxd5 Qe7 34. Qe3 a5 35. Qe4 a4 36. Rxd8+ Nxd8 37. Qa8 Qd7
38. g3 Kh7 39. Qe4+ {Weighted Error Value: White=0.08/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.21"]
[White "Sevian, Samuel"]
[Black "Praggnanandhaa R"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2654"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,118,36,22,27,25,38,27,22,2,29,28,22,24,36,26,48,27,31,17,104,92,109,
106,102,93,98,81,111,125,132,19,24,0,0,0,0,0,0,-39,-40,-79,0,0,0,0,0,0,47,12,
44,12,25,0,0,0,0,0,0,0,26,23,73,89,75,75,137,122,260,55,83,79,232,236,321,237,
447,436,735,722,29963,29965,29965,29966,29965,29967,29967,29969,29967,29970,
29967,29971,29971,29972,29972,29973,29978,29974,29974,29975,29975,29975,29975,
29976,29976,29977,29979,29980,29980,29981,29981]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6
4. O-O Nge7 5. d4 cxd4 6. Nxd4 Ng6 {is more profitable than 6...Qb6 at the
moment. B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} 7. Be3 Be7 8. c3 $5
{[%mdl 4] A promising side line.} O-O {White has an edge.} 9. Nd2 Bg5 {[#]} 10.
Qe1 $146 ({Predecessor:} 10. Bxg5 Qxg5 11. N2f3 Qc5 12. Qa4 a6 13. b4 Qh5 14.
Rfe1 Nxd4 15. Nxd4 d6 16. Rad1 {1/2-1/2 (48) Kobalia,M (2594)-Sjugirov,S (2661)
Moscow 2021}) 10... Bf4 11. g3 Bxe3 12. Qxe3 e5 13. Nf5 d5 14. Rad1 Qf6 (14...
Qa5 $11 {remains equal.} 15. Nd6 a6 16. exd5 axb5 17. Nxc8 (17. dxc6 bxc6 18.
a3 Be6 $11) 17... Rfxc8) 15. exd5 $16 {Strongly threatening Nxg7.} Bxf5 16.
dxc6 bxc6 17. Ba4 Rad8 18. Ne4 ({Don't go for} 18. Qxa7 $2 Ra8 $19) 18... Qe7
19. b4 Be6 20. Qe2 (20. Bxc6 $16 Bxa2 21. Bb5) 20... Bd5 $11 21. f3 a5 22. Nc5
axb4 23. cxb4 Qg5 24. Kh1 h5 25. Bb3 h4 (25... Bxb3 $17 26. Nxb3 h4) 26. Bxd5
cxd5 27. f4 exf4 28. gxf4 Qf6 29. Qg4 Rfe8 30. Qg5 (30. f5 $5 {[%cal Rf5g6]}
Ne5 31. Qd4 $14) 30... Qc6 31. f5 d4+ 32. Qg2 $1 {[%cal Rg2c6]} Ne5 33. Qxc6
Nxc6 34. b5 {Hoping for Nb7.} Nb4 35. a4 d3 {[#]} 36. Rf4 $1 $36 {[%cal Rf4b4]
[%mdl 2048] Black is under strong pressure.} d2 {[#]} 37. Re4 {Threatens to
win with Rxd2!} Rxe4 (37... Kf8 $142) 38. Nxe4 $16 {[%mdl 4096] Endgame KRN-KRN
} Ra8 (38... Rd4 $16) 39. Nc5 $2 ({But not} 39. Nxd2 $6 Rxa4 40. b6 Na6 $16) (
39. Rxd2 $18 {aiming for b6.} h3 40. Kg1) 39... Rc8 $14 40. Nb3 {White stays
focused until the end.} Rc3 $2 (40... Nd3 $16 41. Rxd2 Rc3) 41. Nxd2 $18 Ra3
42. Ne4 {b6 is the strong threat.} Kf8 $2 (42... h3 {keeps fighting.} 43. Rd8+
Kh7 44. Ng5+ Kh6 45. Nxh3 Kh5) 43. b6 Rxa4 (43... Na6 $142 44. b7 Ke8) 44. b7
Na6 {[#]} 45. Nc5 $1 {[%mdl 512] White mates.} Rb4 46. Rd8+ Ke7 47. Rd7+ Ke8
48. Nxa6 {KRN-KR} Rb1+ 49. Kg2 Kxd7 50. b8=Q Rxb8 51. Nxb8+ {KN-K3P} Kc7 52.
Na6+ Kb6 53. Nb4 Kc5 54. Nc2 Kd5 55. Kf3 Ke5 56. Kg4 h3 57. Ne1 Ke4 58. Nf3 f6
59. Ng1 Kd5 {Weighted Error Value: White=0.21/Black=0.41} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.22"]
[White "Shevchenko, Kirill"]
[Black "Vitiugov, Nikita"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2632"]
[BlackElo "2727"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,64,34,34,44,47,54,27,13,0,0,0,0,0,0,-47,0,0,0,-25,-25,-25,-21,-21,0,
-21,-3,-91,-80,-64,-57,-229,-93,-93,-90,-88,-93,-87,-96,-75,-75,-151,-191,-395,
-380,-469,-450,-5031,-2328,-6079,-5935]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4
Nf6 5. O-O Bc5 6. c3 b5 7. Bb3 d6 8. d4 Bb6 9. a4 Bg4 {C78: Ruy Lopez:
Archangelsk and Möller Defences.} 10. h3 Bh5 11. g4 {aiming for axb5.} Bg6 {
White has an edge.} 12. g5 Nxe4 13. Bd5 Ne7 {[%cal Re7d5]} 14. Bxa8 Qxa8 {[#]}
15. Nh4 $146 ({But not} 15. dxe5 dxe5 16. Nxe5 Ng3 $17) ({Predecessor:} 15.
axb5 Bh5 16. Rxa6 Qc8 17. Kh2 O-O 18. Qd3 Bg6 19. Qc4 d5 20. Qb4 c5 21. Qa4
exd4 22. Rxb6 {1-0 (39) Navara,D (2740)-Morovic Fernandez,I (2501) Batumi 2018}
) 15... Nf5 (15... b4 {with more complications.} 16. a5 Ba7 17. Be3 O-O 18. Qf3
exd4 19. cxd4 f5) 16. Nxf5 Bxf5 17. Qf3 (17. Re1 {looks sharper.} O-O 18. f3
Ng3 19. axb5 a5 20. Kh2) 17... Qc8 18. axb5 axb5 19. dxe5 dxe5 20. Be3 {
Strongly threatening Bxb6.} O-O 21. h4 (21. Re1 $11 {keeps the balance.}) 21...
Bxe3 $1 $17 22. fxe3 g6 23. Kh2 $2 {[#]} ({White should play} 23. Rd1 $15)
23... Qe6 (23... h6 $1 $19 {has better winning chances.} 24. Qg2 hxg5) 24. Qe2
h6 25. Nd2 {And now Nxe4 would win.} hxg5 26. Rxf5 {[%mdl 64] Remove Defender}
gxf5 27. Nxe4 fxe4 {KQR-KQR} 28. Rg1 {[#]} (28. Qh5 $142 Qg6 29. Qxg5) 28... f6
$1 29. Rg4 $2 (29. hxg5 f5 30. Kg2) 29... Kg7 $19 30. Rxe4 Rh8 {White must now
prevent ...f5.Black is clearly winning.} 31. Qg2 (31. Kg1 $142 f5 32. Rb4)
31... Qd5 32. Qc2 {[#]} Qxe4 $3 {[%mdl 512] Weighted Error Value: White=0.92/
Black=0.11} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.23"]
[White "Esipenko, Andrey"]
[Black "Zhou, Jianchao"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2720"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "167"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,167,18,24,24,12,15,27,13,8,11,12,27,16,16,16,25,0,0,0,0,-22,10,0,18,
0,0,-11,-10,-10,-13,-25,-6,0,0,0,0,0,0,6,7,0,0,0,27,27,27,29,33,14,71,70,72,72,
90,51,98,95,123,122,143,99,144,145,152,143,153,138,134,118,121,114,112,96,97,
104,104,100,122,0,0,0,138,137,125,123,132,139,166,130,176,137,137,137,138,140,
171,162,160,118,130,115,110,110,120,122,125,124,125,106,116,116,139,111,199,
189,294,292,289,280,270,248,399,406,391,399,391,362,385,383,370,367,618,510,
474,539,464,380,380,347,570,566,598,634,650,654,647,648,525,498,29964,29963,
29962,29940]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O Bd7 5. Re1 Nf6 6. c3 a6 7.
Bf1 Bg4 8. h3 Bxf3 9. Qxf3 e6 {is more profitable than 9...g6 at the moment.
B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} 10. d3 Be7 11. Nd2
O-O {White has an edge.} 12. Qe2 b5 13. g3 {[#]} b4 $146 ({Predecessor:} 13...
Rb8 14. Bg2 Qc7 15. a3 a5 16. a4 b4 17. Nc4 Nd7 18. Be3 Nce5 19. Nxe5 dxe5 {
1/2-1/2 (30) Bok,B (2607)-Harika,D (2497) Wijk aan Zee 2018}) 14. Nf3 bxc3 15.
bxc3 d5 16. e5 Nd7 17. Bf4 Nb6 18. a4 c4 19. d4 Nd7 20. Qd2 Na5 21. Qe3 Rb8 22.
Ra2 Rb3 23. Be2 Qb6 24. Nd2 Rb2 25. Rea1 Rb8 26. Bd1 Qd8 {White must now
prevent ...g5.} 27. h4 R8b7 28. Bc2 Qb8 29. Qe1 $1 Nc6 30. Rxb2 Rxb2 31. Qc1
Rb7 32. Nf3 a5 (32... Na5 $11 {keeps the balance.}) 33. Kg2 $16 Nb4 34. cxb4
axb4 35. Qb1 Nf8 36. Bd2 b3 37. Bd1 Ra7 38. Qb2 Bb4 39. Bc3 Qb6 40. Nd2 {
[%cal Bf3d2,Bd2b1,Bb1c3][%mdl 32]} Qa5 41. Nb1 Nd7 42. Bxb3 Bxc3 43. Nxc3 {
Hoping for Bd1.} Qb4 {[%mdl 64] Pin} 44. Rb1 {aiming for Bd1.} cxb3 45. Qxb3
Qxd4 {[#]} 46. Qb8+ $1 {[%mdl 512]} Nf8 {[#]} 47. Kg1 Ra6 $11 48. Qc8 (48. Qb7
{feels hotter.} Ra7 49. Qc8 h5 50. Rb8 Kh7 51. Nb5) 48... Qc4 (48... Rb6 $1 $11
{remains equal.} 49. Rb5 Rxb5 50. axb5 h5) 49. Qxc4 $16 dxc4 {[%mdl 4096]
Endgame KRN-KRN} 50. Rb4 Rc6 51. Rb8 f6 52. Ra8 Rb6 53. exf6 gxf6 54. Rc8 Kf7
55. Rxc4 Nd7 56. Rc7 Ke8 57. Kg2 Ra6 58. Rc4 f5 59. Kf1 Kd8 60. Ke2 Ne5 61. Rc5
Nd7 62. Rb5 Kc7 63. Kd3 Rd6+ 64. Kc2 Kc6 (64... Rc6 $16 65. f4 Nc5) 65. Na2 $18
Nf6 {[#]} (65... Kc7 {was called for.} 66. a5 Rc6+ 67. Kd3 Rd6+ 68. Ke3 Kc6)
66. Nb4+ $1 Kc7 67. a5 {[%cal Ba4a5,Ba5a6,Ba6a7][%mdl 32]} Ne4 68. f3 Nxg3 $2 (
68... Rd2+ {was necessary.} 69. Kb3 Nd6 70. Rc5+ Kd7) 69. a6 {Threatens to win
with a7.} Rd8 70. Rb7+ Kd6 71. Rxh7 e5 72. a7 Ra8 73. Kd2 f4 $2 (73... Kc5 74.
Nd3+ Kd6 75. Rh6+ Kd5) 74. Kd3 Kc5 75. Rb7 Rd8+ 76. Kc3 Ra8 77. Nd3+ Kc6 $2 (
77... Kd6 78. Rf7 e4 79. fxe4 (79. Nxf4 exf3 80. Nh3 Ne4+ 81. Kd4 f2 $16) 79...
Nxe4+ 80. Kd4 Ke6) 78. Rh7 e4 79. fxe4 Nxe4+ 80. Kd4 Nd6 81. Nb4+ Kb5 82. Nd5 {
Nc7+ is the strong threat.} Kc6 (82... Ka5 $18 83. Kc5 Ne4+ 84. Kc6 Nd2) 83.
Rc7+ Kb5 84. Rc5+ {Weighted Error Value: White=0.09/Black=0.15} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.24"]
[White "Movsesian, Sergei"]
[Black "Harikrishna, Pentala"]
[Result "0-1"]
[ECO "C82"]
[WhiteElo "2627"]
[BlackElo "2719"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,112,21,23,17,15,15,25,11,12,16,10,16,18,12,8,17,22,12,28,26,19,15,20,
14,13,12,10,0,0,-4,0,-8,-8,-10,-5,-12,-3,-43,-20,-21,-21,-21,-20,-19,-12,-237,
-237,-237,-237,-240,-234,-348,-323,-322,-264,-238,0,-239,-250,-729,-984,-1069,
-1065,-1020,-1008,-949,-941,-860,-801,-735,-685,-1202,-1085,-29968,-29969,
-29972,-29968,-29968,-29969,-29969,-29970,-29969,-29971,-29971,-29972,-29971,
-29973,-29972,-29973,-29978,-29978,-29977,-29978]} 1. e4 e5 2. Nf3 Nc6 3. Bb5
a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Qe2 O-O
11. Be3 f6 12. exf6 {C82: Open Ruy Lopez: 9 c3 without 9...Be7.} Bxe3 $5 {
[%mdl 4] Exploring less charted territory.} ({Much worse is} 12... gxf6 $6 13.
Nbd2 $16) 13. Qxe3 {Threatens to win with fxg7.} Qxf6 14. Nbd2 {White has an
edge.} Nxd2 15. Nxd2 Bf7 16. Nf3 Rae8 17. Qc5 Ne5 18. Nxe5 {[#]} Qxe5 $146 ({
Predecessor:} 18... Rxe5 19. Qxc7 Re2 20. Rae1 Rxb2 21. Re3 h6 22. h3 Rd2 23.
Rf3 Qe6 24. Qf4 Re2 {1/2-1/2 (33) Hegelund,O (2134)-Llorente Alvarez,J (2171)
ICCF email 2016}) 19. a4 Rb8 20. Rfe1 Qd6 21. Qxd6 cxd6 22. axb5 Rxb5 23. Bd1
Rxb2 24. Bf3 Rb6 25. h3 Rc8 26. Ra3 Kf8 27. Rea1 Ke7 28. Re1+ Kf6 29. Rea1 Be6
30. Rxa6 Rxa6 31. Rxa6 Rxc3 32. Rxd6 $11 {[%mdl 4096] Endgame KRB-KRB} Ke5 33.
Rd8 (33. Ra6 $11 {and White stays safe.}) 33... Rc1+ $19 34. Kh2 Rc8 35. Rxc8
Bxc8 {KB-KB} 36. Kg3 (36. g4 {was called for.}) 36... d4 $1 37. Be2 Ke4 38.
Bf3+ Ke5 39. Be2 Bf5 40. Bb5 $2 (40. Bd1) 40... d3 41. Ba4 Kd4 42. Kf4 Be6 43.
Bd1 Ba2 44. h4 Bb1 45. Kf5 Bc2 46. Bf3 Bb3 47. g4 d2 {Black mates.} 48. h5 Bc2+
49. Ke6 d1=Q 50. Bxd1 Bxd1 51. Kf7 Bxg4 52. Kxg7 {KB-KPP} Bf5 53. Kf6 {[#]} Ke4
$1 {[%cal Re4f4]} 54. Kg5 {[#]} Ke5 $1 55. f4+ Ke4 56. h6 Bd7 {Weighted Error
Value: White=0.53/Black=0.08} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.25"]
[White "Onyshchuk, Volodymyr"]
[Black "Alekseenko, Kirill"]
[Result "0-1"]
[ECO "C93"]
[WhiteElo "2622"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 34,88,37,39,45,44,51,28,35,6,13,7,9,6,6,6,6,9,73,52,57,46,56,25,25,0,0,
0,0,0,15,-90,-96,-90,-104,-96,-92,-86,-68,-145,-117,-424,-421,-423,-156,-130,
-116,-414,-429,-835,-841,-838,-823,-825,-712,-29975,-29969]} 1. e4 e5 2. Nf3
Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. h3 d6 9. c3 h6 10.
d4 Bd7 11. Nbd2 Re8 12. Nf1 Bf8 13. Ng3 Na5 14. Bc2 c5 15. d5 Nc4 16. a4 Nb6
17. a5 Nc4 18. b4 $1 Nh7 {C93: Closed Ruy Lopez: Smyslov Variation.} 19. Bd3
Rc8 {[#]} 20. Re2 $146 ({Predecessor:} 20. Bxc4 bxc4 21. Be3 cxb4 22. cxb4 g6
23. Qc1 h5 24. Ra3 h4 25. Nf1 f5 26. N1d2 fxe4 27. Nxe4 {1/2-1/2 (52) Navara,D
(2710)-Azarov,S (2618) Czech Republic 2013}) 20... g6 {White has an edge.} 21.
bxc5 Rxc5 22. Rea2 h5 23. Nd2 Nxd2 24. Bxd2 Be7 25. Rc2 Qc8 (25... Bg5 $11 {
remains equal.}) 26. Rac1 Bg5 27. c4 b4 28. Bxb4 {[#] Threatens to win with
Ra1.} Ba4 29. Ra1 Bxc2 30. Qxc2 Nf6 31. Ne2 Nd7 32. Nc3 (32. Nc1 $11) 32...
Rxc4 $17 33. Bxc4 Qxc4 34. Bxd6 {[#] Ra4 is the strong threat.} Rc8 35. Ra3 Qd4
{White must now prevent ...Bd2.} 36. Qb2 (36. g3 $1 $15) 36... Bf4 {Strongly
threatening ...Rxc3!} 37. Bb4 {[%mdl 8192]} (37. Kf1 $17 Nf6 38. Qc2) 37... Nf6
$19 38. g3 Bxg3 (38... Bd2 $19 {has better winning chances.} 39. Rb3 Nxe4 40.
Nxe4 Rc1+ 41. Qxc1 Bxc1) 39. Rb3 $17 Bh4 40. Qe2 {[%mdl 8192]} (40. Be7 $17 {
is the only way for White.}) 40... Rc4 $19 41. Qb2 (41. Na2 $142 Nxe4 42. Rd3
Qxf2+ 43. Qxf2 Nxf2 44. Rc3) 41... Nxe4 42. Nxe4 Qd1+ 43. Kg2 Rxe4 44. Bc5 Re1
{Weighted Error Value: White=0.90/Black=0.17} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.26"]
[White "Kollars, Dmitrij"]
[Black "Svidler, Peter"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2621"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,64,0,0,11,9,10,13,18,18,16,11,17,12,13,6,13,0,10,10,0,0,22,22,16,21,
10,12,17,17,24,-2,0,0,0,0,0,0,0,0,0,0,0,0,9,0,8,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3.
d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O O-O 9. Qd3 Qc7 {
B92: Sicilian Najdorf: 6 Be2.} 10. Bg5 Be6 11. Bxf6 Bxf6 12. Rfd1 Be7 13. Nd5
Bxd5 14. Qxd5 Nd7 {[#]} 15. Nd2 $146 ({Predecessor:} 15. c3 b5 16. Qd3 Nb6 17.
Nd2 f5 18. exf5 d5 19. Nf1 Rad8 20. Ng3 Kh8 21. Bg4 {0-1 (35) Eswaran,A (2162)
-Ippolito,D (2365) Philadelphia 2017}) 15... b5 16. c3 Rab8 17. Nf1 Nb6 18. Qd3
Nc4 19. Qc2 Bg5 20. Bxc4 bxc4 21. b4 cxb3 $1 22. axb3 Rb6 23. Rd5 Rfb8 {
The position is equal.} 24. Ra3 h5 25. h3 Rb5 26. Rxb5 axb5 27. Qd3 b4 28. cxb4
Rxb4 29. Ra4 Rb7 30. Ra6 Qc5 31. Rxd6 Rxb3 $1 32. Qxb3 Qxd6 {Not much happened
in this game.  Weighted Error Value: White=0.03/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.27"]
[White "Mamedov, Rauf"]
[Black "Kovalev, Vladislav"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2673"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,60,24,27,-10,15,8,12,9,9,11,14,12,14,8,10,13,15,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. c4 c6 5. d4 d5 6. O-O
O-O 7. cxd5 cxd5 8. Ne5 Ng4 9. Nf3 Nf6 10. Nc3 Ne4 11. Ne5 Nxc3 12. bxc3 Nc6
13. Nxc6 {13.Ba3 is the modern continuation.} bxc6 14. Qb3 {D79: Fianchetto
Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5).} Qa5 {The position is
equal.} 15. Qa3 Qxa3 16. Bxa3 Ba6 17. Rfb1 Rfb8 18. Bxe7 Bxe2 19. Bf1 Bxf1 20.
Kxf1 Bf8 21. Bxf8 (21. Bc5 {with more complications.} a5 22. Ke2 Bxc5 23. dxc5
Re8+ 24. Kd3) 21... Kxf8 $11 {[%mdl 4096] Endgame KRR-KRR} 22. Rb3 Rb6 23. Rab1
Rab8 24. Ke2 Ke7 25. Kd3 Kd6 26. h4 h5 {[#]} 27. c4 $146 {[#] Threatens to win
with c5+.} ({Predecessor:} 27. R1b2 Rxb3 28. axb3 a5 29. Kc2 Re8 30. Kd2 Rb8
31. Kc2 Re8 32. Kd2 Rb8 33. Kc2 {1/2-1/2 (31) Mamedyarov,S (2782)-Vachier
Lagrave,M (2751) Chess24.com INT 2021}) 27... dxc4+ 28. Kxc4 R8b7 29. R1b2 Rb8
30. Rb1 R8b7 {A rather calm draw.  Weighted Error Value: White=0.04/Black=0.02}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.28"]
[White "Sjugirov, Sanan"]
[Black "Erigaisi Arjun"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2663"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,75,19,18,18,24,13,27,26,26,18,20,24,23,21,30,10,14,18,14,14,14,9,22,
16,16,15,51,52,63,62,88,80,80,82,88,63,113,123,141,140,102,113,110,111,322,297,
588,303,641,661,638,620,996,972,910,881]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3
Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6 9. Nc3 Nxc3 10. bxc3 dxc4 11. Bxc4
Bf5 12. Bg5 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} Qa5 13.
Nh4 Be6 14. Bxe6 {aiming for Bf5.White has an edge.} Qxg5 15. Nf3 Qa5 16. Bb3
Nd7 17. Qd3 Rae8 18. Rfe1 Nf6 19. g3 g6 20. h4 Kg7 21. Kg2 h6 {[#]} 22. Rad1 $5
$146 {[%mdl 8] New and interesting.} ({Predecessor:} 22. a4 Qf5 23. Qxf5 gxf5
24. Ne5 Ne4 25. Nc4 Bc7 26. Ne3 f4 27. Nf5+ Kg6 28. Bc2 Kxf5 29. Bxe4+ {
1/2-1/2 (56) Van Foreest,J (2688)-Mamedyarov,S (2782) chess24.com INT 2021})
22... Qc7 23. c4 c5 24. d5 Nh5 {[%cal Rd6g3]} 25. Ba4 Re7 26. Rxe7 Qxe7 27. Re1
Qf6 28. Nd2 Qxh4 29. Ne4 $36 {[%mdl 2048] White is really pushing.} Qe7 30.
Qc3+ Be5 {[#]} 31. Nxc5 $1 {[%mdl 512]} Qxc5 32. Qxe5+ Kg8 $2 {A mistake that
costs the game.} (32... Nf6 $16) 33. d6 $18 Qxc4 (33... Qxe5 34. Rxe5 Nf6) 34.
Bb3 Qc8 (34... Qc6+ 35. Bd5 Qd7) 35. Qe7 {White is clearly winning.} Kg7 36. d7
Qc6+ 37. Kg1 Qf6 {[#]} 38. Qxf8+ $1 {[%mdl 576] Remove Defender, Promotion. 
Weighted Error Value: White=0.13/Black=0.41} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.29"]
[White "Jobava, Baadur"]
[Black "Grandelius, Nils"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2582"]
[BlackElo "2662"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,67,0,57,-8,-10,-47,0,0,0,-118,-126,-174,-175,-199,-185,-194,-175,
-178,-191,-190,-156,-158,-152,-277,-170,-171,-162,-183,-147,-220,-144,-145,
-145,-151,-151,-124,-145,-145,-72,-155,-61,-74,-77,-75,-60,-121,-45,-42,-22,
-206,-208,-208,-213,-197,-206,-529,-519,-450]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4
4. Nxd4 Bc5 5. Nb3 Bb6 6. Nc3 Qf6 (6... Nf6 $11) 7. f4 {C45: Scotch Game.} (7.
Qe2 $14) 7... Nge7 $11 8. Bd2 {[#]} (8. Na4 {is more complex.} Qe6 9. Bd3 d5
10. e5 Nb4 11. Bb5+) 8... d5 $146 ({Predecessor:} 8... d6 9. Na4 O-O 10. Be2
Bd7 11. Nxb6 axb6 12. c3 Qg6 13. Bf3 f5 14. exf5 Nxf5 15. O-O Kh8 16. Qe2 Rae8
17. Qd3 Nh4 18. Qxg6 Nxg6 19. g3 Bf5 20. Rfe1 Bd3 21. Rxe8 Rxe8 {1/2-1/2 (21)
Trevis,R (1107)-Albesa,A (986) LSS email 2008}) 9. exd5 {The position is equal.
} Nb4 {White must now prevent ...Bf5.} 10. Bb5+ (10. a3 $11 {remains equal.}
Nbxd5 11. Qf3 Qe6+ 12. Be2) 10... c6 $17 11. dxc6 (11. Ne4 $2 Qg6 $19) 11...
bxc6 12. Bd3 Nxd3+ 13. cxd3 Qh4+ $1 14. g3 Qh3 {[%mdl 1024] ...Bg4 is the
strong threat. Black has strong compensation.} 15. Qe2 Bg4 $1 {[%cal Rg4e2]}
16. Qf1 Qh5 17. Na4 (17. h3 $17 {keeps fighting.} Bf3 18. Rh2) 17... O-O 18.
Nxb6 axb6 19. Qf2 Bh3 20. Bc3 (20. Qe2 $17 {is a better defense.} Qd5 21. Qe4)
20... Qd5 21. Rg1 Nf5 22. g4 Rfe8+ 23. Kd2 {[#]} Rad8 $1 24. Rae1 {Hoping for
Rxe8+.} ({Wrong is} 24. gxf5 $2 Qxd3+ 25. Kc1 Re2 $19) 24... Qxd3+ 25. Kc1 {[#]
} Rxe1+ (25... Bxg4 $1 $17 {[%mdl 512] aiming for ...Re2.} 26. Nd4 (26. Rxg4 $2
Rxe1+ 27. Qxe1 Ne3 $19) (26. Qd2 Qh3) 26... Rc8 $1 27. Rxe8+ Rxe8) 26. Rxe1 $15
Bxg4 27. Qxb6 h5 {Strongly threatening ...Bd1.} 28. Qf2 (28. Nc5 $1 $15 Qd6 29.
Ne4 Qxf4+ 30. Bd2) 28... Ra8 ({Black should play} 28... Qb5 $17 29. Qg2 Qa4)
29. a3 Qc4 30. Nd4 {[#] White does not recover from this.} (30. Nd2 $11 {
and White has nothing to worry.} Qb5 31. Ne4) 30... Rd8 $1 $40 {[%cal Rf5d4]
[%mdl 128] Black has strong attack.} 31. Nxf5 Bxf5 32. Rd1 Rd3 33. Rd2 $2 (33.
Rxd3 Qxd3 34. a4) 33... Rxc3+ 34. bxc3 {Weighted Error Value: White=0.38/
Black=0.17} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.30"]
[White "Volokitin, Andrei"]
[Black "Yakubboev, Nodirbek"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2652"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,102,35,35,25,30,14,13,14,13,8,0,43,0,0,0,0,0,18,0,14,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,-45,-54,-64,-37,-37,-37,-39,-36,-39,-24,-33,-36,
-38,-43,-43,-41,-40,-36,-37,-36,-31,-32,-35,-27,-29,0,0,0,0,4,0,0,0,0]} 1. e4
e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O d6 6. c3 a6 7. a4 Ba7 8. Re1 h6 9.
Nbd2 O-O 10. h3 Ne7 11. Bb3 Ng6 12. d4 Re8 13. Bc2 b5 14. Nf1 Bb7 15. Ng3 Bb6 {
[#] C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 16. a5 $146 ({
Predecessor:} 16. Bd3 d5 17. axb5 dxe4 18. Nxe4 Nxe4 19. Bxe4 Bxe4 20. Rxe4
axb5 21. Rxa8 Qxa8 22. Qe2 Qd5 23. g4 {0-1 (45) Petrosian,T (2615)-Naroditsky,
D (2626) Saint Louis 2017}) 16... Ba7 17. Bd2 c5 {[%cal Re5d4]} 18. dxe5 dxe5
19. c4 bxc4 20. Bc3 Bc6 21. Nf5 Bb5 22. g3 Qc7 23. Qd6 Qxd6 24. Nxd6 Re6 25.
Rad1 Bb8 26. Nf5 {[%cal Bd6f5,Bf5e3,Be3d5][%mdl 32]} ({Reject} 26. Nxb5 axb5
27. Rd8+ Re8 $17) 26... Bc7 27. Ne3 Rc8 28. Nd5 Nd7 29. Nd2 Ne7 30. b3 cxb3 31.
Bxb3 Nxd5 32. exd5 Ree8 33. Nc4 e4 34. d6 Bb8 35. f3 exf3 36. Kf2 Bc6 37. Re7
Rxe7 $1 38. dxe7 {[#] Strongly threatening Nd6.} Re8 39. Re1 h5 40. h4 Nf6 41.
Bxf6 gxf6 42. Bd1 Bd7 43. Bxf3 Be6 44. Bb7 Rxe7 ({But not} 44... Bxc4 $6 45.
Bc6 $16) 45. Bxa6 Ra7 46. Bb5 Rb7 47. Na3 c4 48. Bxc4 {The position is equal.}
Ra7 49. Bxe6 Rxa5 50. Nc4 Ra2+ 51. Kf3 {[#] Threatens to win with Bd5.} fxe6 {
Weighted Error Value: White=0.03/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.31"]
[White "Sarana, Alexey"]
[Black "Pichot, Alan"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2649"]
[BlackElo "2628"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,83,23,27,33,13,15,7,14,11,25,11,31,36,33,39,30,29,50,37,39,41,40,39,
30,40,62,66,121,121,117,123,119,126,167,171,175,177,173,173,173,180,200,143,
240,213,255,255,314,317,276,203,269,265,279,278,312,304,306,305,306,295,329,
369,378,365,420,424,603,595,534,499]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4
5. Bg5 h6 6. Bxf6 Qxf6 7. Qa4+ Nc6 8. e3 O-O {D38: Queen's Gambit Declined:
Ragozin Defence (4 Nf3 Bb4).} 9. Rc1 Rd8 10. Be2 dxc4 {The position is equal.}
11. Qb5 Bd6 12. Qxc4 Qe7 {[#]} 13. O-O $146 ({Predecessor:} 13. a3 e5 14. d5
Nb8 15. Nd2 Nd7 16. O-O a6 17. Nde4 Nf8 18. Nxd6 cxd6 19. Qb4 {1-0 (91) Yilmaz,
M (2607)-Riazantsev,A (2639) Moscow 2020}) 13... e5 14. d5 Nb8 15. Nb5 {
[%cal Rb5c7]} Nd7 16. Nxc7 Nb6 17. Qc2 Bxc7 18. Qxc7 Qxc7 19. Rxc7 Nxd5 {[#]}
20. Rd1 $1 Bg4 {White stays focused until the end.} (20... e4 $14) 21. Rxb7 $16
e4 {[#]} 22. Nd4 Bxe2 23. Nxe2 Nf4 {[%cal Rd8d1]} 24. Rxd8+ Rxd8 $18 {[%cal
Rd8d1][%mdl 4096] Endgame KRN-KRN} 25. Nc3 Ne2+ 26. Kf1 Nxc3 27. bxc3 {KR-KR}
Rd3 28. Rc7 Rd2 (28... a5 $16) 29. a4 Rc2 30. g4 g5 31. Rxa7 Rxc3 32. Rd7 Rc5
33. Rd4 Re5 34. Rb4 Kg7 35. Rb5 Re6 36. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Rc6
37. Ke1 Rc2 38. Rf5 Kg6 39. Kd1 Rc6 40. Rb5 {Threatens to win with Rb6.} Rc4 (
40... f6 $142 41. Rb6 Rc3) 41. a6 Ra4 42. Rb6+ {Weighted Error Value: White=0.
06/Black=0.25} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.32"]
[White "Zvjaginsev, Vadim"]
[Black "Abdusattorov, Nodirbek"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2609"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,76,12,14,0,0,0,40,0,0,-5,-3,8,12,8,8,6,3,1,10,8,0,0,0,0,0,-20,-18,-16,
-31,-29,-21,-19,-18,-22,-27,-34,-36,-45,-17,-20,0,-8,-2,-27,-32,-33,-23,-104,
-100,-163,-136,-150,-72,-102,-82,-76,-60,-153,-132,-147,-136,-197,-187,-192,
-168,-259,-259,-259,-259]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 a6
6. Be2 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} Ngf6 7. O-O
g6 8. c4 {White is slightly better.} Bg7 9. h3 O-O 10. Nc3 b6 11. e5 dxe5 12.
Nxe5 Nxe5 13. Qxe5 Bb7 14. Qf4 {[#]} Ne8 $146 ({Predecessor:} 14... e5 15. Qh4
Qd4 16. Qg3 Rab8 17. Be3 Ne4 18. Nxe4 Qxe4 19. Rac1 Qc6 20. c5 b5 {1-0 (34)
Kolek,P (2179)-Storkebaum,K (2285) ICCF email 2017}) 15. Bf3 Bxf3 16. Qxf3 Nd6
17. Rd1 Rc8 18. Nd5 e6 ({Not} 18... Nxc4 $2 19. Bg5 $18) 19. Nc3 {[%cal Bd5c3,
Bc3e4,Be4g3][%mdl 32]} Qe7 20. b3 $1 Nf5 21. Bb2 b5 22. cxb5 axb5 {[%cal Ba6b5,
Bb5b4][%mdl 32]} 23. Rab1 b4 24. Ne4 Rfd8 25. Bxg7 Kxg7 26. Ng3 Nd4 27. Qe4 e5
28. Re1 (28. Ne2 $11 f5 29. Qe3) 28... Rc5 $36 {[%mdl 2048] Black has strong
initiative.} 29. Rbc1 (29. Rec1 $17 {might work better.}) 29... f5 $19 30. Qb1
Rcd5 (30... Rc3 $142 {...Rdc8 is the strong threat.} 31. Ne2 Nxe2+ 32. Rxe2 Qc5
) 31. Ne2 Nb5 32. Qc2 Qd6 33. g3 (33. Qc6 $15) 33... Rd2 $17 34. Qc5 {[#]} Na3
35. Qxd6 (35. Kf1 $17) 35... R8xd6 $19 36. Rc7+ Kh6 37. Kf1 (37. g4 $142) 37...
Rxa2 38. Nc1 {[#]} Rc2 $1 {[%cal Rc2c7] Weighted Error Value: White=0.19/
Black=0.07} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.33"]
[White "Bluebaum, Matthias"]
[Black "Henriquez Villagra, Cristobal"]
[Result "1/2-1/2"]
[ECO "D43"]
[WhiteElo "2640"]
[BlackElo "2608"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,61,0,-3,17,8,9,0,33,29,30,28,39,18,18,18,21,31,22,21,22,0,6,7,7,7,14,
0,0,0,-2,-4,-6,-22,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4.
Nc3 e6 5. Qc2 Nbd7 6. e4 dxe4 7. Nxe4 Nxe4 8. Qxe4 Bb4+ 9. Bd2 Bxd2+ 10. Nxd2
Qc7 {D45: Semi-Slav: 5 e3.} 11. Bd3 {[#]} b6 $146 ({Predecessor:} 11... Nf6 12.
Qe3 O-O 13. O-O b6 14. f4 Bb7 15. c5 Rad8 16. Ne4 Nxe4 17. Qxe4 {1/2-1/2 (40)
Leveikina,J (2026)-Nebel,R Recklinghausen 2003}) 12. O-O-O Nf6 13. Qe3 Bb7 14.
c5 Nd5 15. Qg3 Qxg3 16. hxg3 Ke7 17. Ne4 h6 18. Nd6 {The position is equal.}
Rhb8 19. Be2 bxc5 20. dxc5 a5 21. a3 a4 22. Rd2 Ra5 23. Nxb7 Rxb7 24. Rc2 Nf6
25. Bf3 Kd7 26. Rh4 Kc7 27. Rcc4 Rab5 28. Rc2 Ra5 29. Rcc4 Rab5 30. Rc2 Ra5 31.
Rcc4 {Weighted Error Value: White=0.04/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.34"]
[White "Ter-Sahakyan, Samvel"]
[Black "Tabatabaei, M. Amin"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "2607"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "140"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,140,20,-16,14,-8,16,0,0,-8,-7,-31,-26,-27,-27,-28,-33,-26,-2,-80,-80,
-73,-84,-72,-79,-127,-120,-127,-113,-129,-151,-137,-137,-137,-137,-131,-122,
-122,-129,-268,-195,-194,-210,-218,-166,-166,-166,-166,-169,-224,-224,-224,
-225,-209,-210,-202,-206,-229,-220,-240,-232,-217,-231,-239,-237,-226,-219,
-236,-235,-236,-236,-231,-184,-200,0,-237,-212,-200,-202,-232,-234,-265,-252,
-262,-268,-260,-254,-302,-272,-269,-262,-253,-193,-308,-308,-321,-225,-244,
-223,-322,-322,-280,-267,-225,-210,-210,-185,-289,-287,-294,-294,-287,0,-281,
-273,-281,-186,-303,-300,-295,-185,-210,-210,-294,-292]} 1. e4 e5 2. Nf3 Nc6 3.
Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Nc3 Bd7
10. b3 a5 $5 {[%mdl 4] Exploring less charted territory. C67: Ruy Lopez:
Berlin Defence: 4 0-0 Nxe4.} 11. Bb2 h6 12. h3 Kc8 {The position is equal.} 13.
Rfd1 b6 14. a4 Ne7 15. Rd2 c5 16. Rad1 Be6 17. Ne2 {[#]} g5 $146 ({Predecessor:
} 17... Ng6 18. h4 Be7 19. h5 Nf8 20. Nf4 Bg4 21. Nd5 Bg5 22. Nxg5 hxg5 23. f3
Be6 {1-0 (50) Karthikeyan,M (2606)-Grischuk,A (2777) Chess.com INT 2020}) 18.
h4 (18. Rd8+ $11 {remains equal.} Kb7 19. Rxa8 Kxa8 20. h4) 18... Kb7 $17 19.
hxg5 hxg5 20. Nxg5 Bh6 21. f4 Bxg5 22. fxg5 Rag8 23. Nf4 Rxg5 24. Rd8 Rh4 25.
Rf1 Nf5 26. Rf3 Rgg4 27. Nxe6 fxe6 28. Bc3 (28. Rxf5 $17 {was the only chance.}
exf5 29. e6) 28... Re4 29. Re8 Rh6 30. Rf8 Re2 31. g4 Ne3 {[%csl Ge3][%cal
Re2g2]} 32. Rg3 Rh4 33. g5 (33. Rf2 $142 Rxf2 34. Kxf2 Nd1+ 35. Kg2 Nxc3 {
[%mdl 64] Overworked Piece} 36. Rxc3 Rxg4+ 37. Kf3) 33... Nf5 $19 ({Wrong is} 
33... Nxc2 $2 34. g6 $18) 34. Rg2 {[#]} Rxg2+ 35. Kxg2 {[%mdl 4096] Endgame
KRB-KRN} Rg4+ {[%mdl 64] Double Attack} 36. Kf2 Rxg5 37. Rf6 {[#]} Rh5 $1 {
[%cal Rh5h2]} 38. Ke2 Rh2+ 39. Kd3 Rh3+ 40. Kd2 Ng3 {Hoping for ...Ne4+.} 41.
Rf4 Kc6 42. Bb2 Rh2+ 43. Kd3 Nf5 44. Rf3 Ne7 45. Bc3 Nf5 46. Bb2 Kd7 47. Bc3
Rh4 48. Bb2 Kc6 49. c4 Rh2 50. Bc3 Kd7 51. Rf4 Ke7 52. Rg4 Kf7 53. Rf4 Rh3+ 54.
Kc2 Rg3 55. Rf1 (55. Be1 $142 Re3 56. Bd2) 55... Kg6 {White must now prevent ..
.Ne3+.} 56. Rh1 Kg7 57. Kb2 Rg2+ 58. Ka3 (58. Kb1 $142) 58... Ne3 59. Rh3 Re2
60. Rh4 Kg6 61. Rf4 Nf5 62. Rg4+ (62. Bb2 {was worth a try.}) 62... Kf7 63. Rf4
Ke7 64. Rg4 Kf7 65. Rf4 Ke8 66. Rg4 Kd7 67. Rg5 (67. Rg1 {was the only defense.
}) 67... Ne3 68. Rh5 Rf2 69. Rh7+ Kc6 70. Rh6 Rf3 {Weighted Error Value:
White=0.18/Black=0.14} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.35"]
[White "Abasov, Nijat"]
[Black "Kuybokarov, Temur"]
[Result "1/2-1/2"]
[ECO "D26"]
[WhiteElo "2638"]
[BlackElo "2549"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,68,9,23,12,6,0,-2,-42,-44,-53,-46,-22,0,-99,-100,-103,-106,-84,-78,
-97,-96,-82,-56,-76,-10,-12,-10,-12,-5,-64,0,0,0,0,0,0,0,-5,0,0,0,0,0,0,0,0,0]
} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O Nc6 7. Nc3 a6 8.
dxc5 Qxd1 9. Rxd1 Bxc5 10. a3 O-O 11. b4 Be7 12. Be2 b5 13. e4 {[#] D27:
Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} Rd8 $146 ({
Predecessor:} 13... h6 14. Bf4 Bb7 15. e5 Ne8 16. Rd7 Bc8 17. Rd2 Nc7 18. Be3
f6 19. Rc1 Nxe5 20. Nxe5 fxe5 {1-0 (39) Leoni,C-Ellison,J IECC email 1997}) 14.
Be3 Bb7 15. Bb6 Rxd1+ 16. Rxd1 Rc8 17. Rd3 g6 18. h3 (18. e5 $1 $11 {keeps the
balance.} Nd5 19. Nxd5 exd5 20. h3) 18... Nb8 $1 $17 19. Nd2 Nfd7 $1 {[%cal
Rd7b6]} 20. Bd4 Nc6 {...Nde5 is the strong threat.} 21. f4 Nxd4 22. Rxd4 Nf6 ({
Inferior is} 22... Rxc3 23. Rxd7 Rc2 24. Rxe7 $16) 23. Rd3 Rd8 (23... a5 $1 $17
{[%cal Ra5b4]} 24. e5 (24. bxa5 b4 $17) 24... axb4 25. exf6 Bc5+ 26. Kf1 bxc3
27. Rxc3 b4 28. axb4 Bxb4 29. Rxc8+ Bxc8) 24. Kf2 $11 Rxd3 25. Bxd3 Bd8 26. a4
(26. Nb3 $11) 26... Bb6+ (26... Be7 $1 $15 27. axb5 Bxb4 28. bxa6 Bxa6 $1 29.
Bxa6 Bxc3) 27. Kf3 {The position is equal.} Bd4 28. Ne2 ({Wrong is} 28. axb5 $2
Bxc3 29. bxa6 {[#]} Bxa6 $1 $19 {[%mdl 512]}) 28... Bb2 $1 29. axb5 axb5 30.
Nb3 Ba3 31. Nc5 Ba8 32. Na6 Bb7 33. Nc5 Ba8 34. Na6 Bb7 {Weighted Error Value:
White=0.19/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.36"]
[White "Martirosyan, Haik M."]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "D44"]
[WhiteElo "2624"]
[BlackElo "2700"]
[Annotator "TA"]
[PlyCount "156"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,156,8,14,11,0,0,0,0,0,10,8,7,12,14,8,15,0,0,0,14,11,6,2,15,0,0,-41,
-28,-45,-42,-78,-81,-64,-59,-129,-129,-130,-124,-1025,1016,1003,1277,-120,-127,
-125,-130,-122,-126,-126,-103,-126,-126,-141,-127,-141,-131,-141,-141,-153,
-160,-160,-145,-184,-206,-183,-171,-171,-164,-262,-262,-273,-262,-275,-272,
-264,-264,-269,-264,-296,-290,-275,-265,-264,-265,-265,-252,-329,-333,-332,
-319,-329,-296,-289,-289,-289,-289,-289,-161,-289,-289,-289,-281,-335,-362,
-398,-389,-587,-576,-587,-587,-587,-587,-570,-559,-497,-490,-491,-485,-12827,
-3289,-12832,-12833,-12831,-12833,-12836,-12837,-12836,-12837,-12838,-12838,
-12839,-12839,-12839,-12839,-12841,-12841,-12841,-12841,-12842,-12842,-12842,
-12843,-12843,-12843,-12844,-12844,-12845,-12845]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6
4. Nc3 e6 5. Bg5 dxc4 6. a4 c5 {D44: Semi-Slav: Botvinnik System.} 7. e4 cxd4
8. Qxd4 Qxd4 {The position is equal.} 9. Nxd4 {[#]} Bd7 $146 ({Predecessor:} 
9... h6 10. Bd2 Be7 11. Bxc4 O-O 12. e5 Nfd7 13. f4 Na6 14. a5 Rd8 15. Ncb5
Ndb8 {1/2-1/2 (23) Leiner,R (2348)-Petrigin,O (2336) ICCF email 2017}) 10. Ndb5
Bxb5 11. axb5 Nbd7 12. Bxc4 h6 13. Bd2 Bc5 14. Ke2 g5 15. f3 Ke7 16. Bb3 Rhg8
17. Bc2 h5 18. Nd1 h4 19. Ne3 Nh5 20. Nc4 Nf4+ 21. Kf1 Rac8 22. g3 ({White
should play} 22. Rd1 $15) 22... hxg3 $1 $17 23. hxg3 {[#]} Rh8 $1 {[%cal Rh8h1]
} 24. Rh5 {[%mdl 8192]} (24. Rxh8 Rxh8) 24... Rh7 $4 {[%mdl 8192]} 25. Rxh7 $18
Rf8 26. Rh8 $2 Rxh8 $17 {[%cal Rh8h1]} 27. gxf4 {Hoping for Rd1.} Rh1+ 28. Ke2
Rxa1 29. fxg5 Rg1 30. f4 Nb6 31. Ne3 Rg3 32. b3 Nd7 33. b4 Bd4 34. Kf2 Rh3 35.
Ke2 Nb6 36. f5 Nd7 37. Nc4 Ne5 38. Nxe5 Bxe5 $19 {[%mdl 4096] Endgame KRB-KB}
39. Bd3 (39. b6 {keeps fighting.} axb6 40. f6+ Kf8 41. b5) 39... b6 40. Bc4 Bc3
{And now ...Rh2+ would win.} 41. Bf4 e5 ({Don't play} 41... Bxb4 42. fxe6 Rc3
43. Bd3 $19) 42. Be3 Bxb4 43. Bd5 Kf8 44. Bc4 Kg7 45. Bd5 Bc5 46. Bd2 Ra3 47.
Bc6 Rb3 48. f6+ Kg6 49. Bd7 Rg3 50. Bf5+ Kh5 51. Bd7 Rg2+ 52. Kd3 Bf2 53. Bf5
Bd4 (53... Rg1 $142 54. Kc2 Bh4) 54. Bd7 (54. g6 {only move.} Rxg6 55. Bxg6+
Kxg6 56. Ke2) 54... Rg3+ 55. Ke2 Ra3 56. Bc8 Bc3 {Threatens to win with ...Ra2.
} 57. Be3 {[#]} Be1 $1 {[%mdl 512]} 58. Bf5 (58. Bb7 $142) 58... Bh4 {Black is
clearly winning.} 59. g6 fxg6 60. f7 Be7 61. Be6 g5 62. Bc1 Rg3 63. Be3 {
Now Kf2 and White clings on.} g4 64. f8=Q (64. Bd7 $142 Kg6 65. Kf2 Rf3+ {
[%mdl 64] Double Attack} 66. Ke2) 64... Bxf8 65. Bf7+ Kh4 66. Bf2 Bc5 67. Bxg3+
Kxg3 {KB-KB} 68. Be6 Kf4 69. Bd7 g3 70. Bh3 Kxe4 71. Bg2+ Kf4 72. Kd3 a5 73.
bxa6 b5 74. Bh1 Ba7 75. Bc6 b4 76. Bh1 b3 {( -> ...e4+)} 77. Kc3 {[#]} Ke3 $1 {
[%cal Re3f2]} 78. Kxb3 Kd3 {Weighted Error Value: White=0.44/Black=0.05} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.37"]
[White "Eljanov, Pavel"]
[Black "Antipov, Mikhail Al."]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2691"]
[BlackElo "2619"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,101,4,17,-7,6,4,17,10,29,10,5,2,33,28,26,21,30,6,6,6,16,6,58,58,55,
58,73,73,104,101,101,95,119,112,124,97,120,114,114,97,122,121,146,90,122,55,
120,121,127,85,207,217,217,262,260,243,242,149,150,164,227,224,183,183,297,296,
354,307,355,344,352,362,353,322,368,333,333,333,491,495,478,473,416,402,645,
620,681,687,926,866,2179,2109]} 1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Nf3
d6 6. O-O Bf5 {6...e6 is the recent fashion.} 7. h3 {A37: Symmetrical English
vs ...g6: 4 Bg2 Bg7 5 Nf3.} Qd7 8. Kh2 e5 9. d3 {The position is equal.} Nge7
10. e4 Be6 11. Ng5 {[#]} h6 $146 ({Predecessor:} 11... O-O 12. Nxe6 Qxe6 13.
Nd5 Qd7 14. h4 Nxd5 15. cxd5 Nd4 16. Bh3 Qe7 17. f4 f5 18. fxe5 Bxe5 19. Bg5
Bf6 20. Bh6 Bg7 21. Bg5 Bf6 22. Bh6 Bg7 23. Bg5 {1/2-1/2 (23) Pajuelo Morales,
R (2005)-Fernandez Rios,J (1741) Madrid 2018}) 12. Nxe6 fxe6 13. h4 Nd4 14. Ne2
Nxe2 15. Qxe2 Nc6 16. Be3 g5 ({Black should try} 16... h5 $11) 17. hxg5 $14
hxg5+ 18. Bh3 $1 Bf6 19. Kg2 Qe7 20. Rh1 Kd7 21. a3 a5 22. Rab1 Kc7 23. Qg4
Rhe8 24. Bd2 Qf7 25. b3 ({Inferior is} 25. Bxg5 Rg8 $17) 25... Nd4 26. Bc3 Nc6
27. Rb2 (27. Qe2 $142) 27... Bd8 28. Qf3 (28. Qe2 $16) 28... Qg7 ({Black
should play} 28... Qxf3+ $14 29. Kxf3 Kd7) 29. Bg4 $16 Kd7 30. Rbb1 b6 {
A mistake that costs the game.} (30... Bc7 $16) 31. Rh5 $18 Ra7 32. Rbh1 {
Strongly threatening Rh7.} Kc8 33. Rh6 Rae7 34. Rh7 Qxh7 {[#]} 35. Bxe6+ {
[%mdl 512]} Kc7 (35... Kb7 $142 36. Rxh7 Rxh7) 36. Rxh7 Rxh7 {[#]} 37. Bg4 Ree7
(37... Kb7 $142 38. Qf5 Rc7) 38. Qf5 {[%csl Gg4][%cal Rf5c8]} Na7 39. b4 (39.
Qxg5 Rhg7 $16) 39... axb4 40. axb4 Rhf7 41. Qg6 ({Not} 41. Qxg5 Rg7 $16) 41...
Rg7 42. Qh6 {aiming for bxc5.} Nc6 43. bxc5 bxc5 44. Bf5 g4 (44... Rgf7 $142
45. Qxg5 Re8) 45. Bd2 Rg8 46. Be6 Rgg7 47. Bd5 Rd7 (47... Rh7 $142) 48. Qh1 {
White is clearly winning.} Bg5 {[#]} 49. Bc3 Rd8 50. Qa1 {Qa6 is the strong
threat.} Rc8 51. Qa6 {Weighted Error Value: White=0.10/Black=0.36} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.38"]
[White "Van Foreest, Jorden"]
[Black "Ganguly, Surya Shekhar"]
[Result "1-0"]
[ECO "A18"]
[WhiteElo "2691"]
[BlackElo "2617"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,63,38,14,26,-24,-29,-28,-27,-40,-24,-37,-26,-7,0,19,34,-39,-28,-30,
-35,-34,-5,-12,20,15,37,20,8,15,65,66,52,61,101,94,95,88,307,310,308,303,800,
771,765,736,681,666,732,670,1051,1036,1024,918]} 1. c4 Nf6 2. Nc3 e6 3. e4 d5
4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. Nf3 b6 {[#] The modern move. A18:
English Opening: Flohr-Mikenas System (1 c4 Nf6 2 Nc3 e6 3 e4).} 8. c5 $146 ({
Predecessor:} 8. g3 Bb7 9. Bg2 Qd8 10. O-O Be7 11. d4 Nd7 12. a4 a5 13. Re1 O-O
14. Bf4 Re8 15. Rb1 {1-0 (43) Xiong,J (2710)-Shankland,S (2709) Saint Louis
2021}) 8... Bxc5 9. d4 Bd6 {Black has an edge.} 10. Bd3 h6 11. Be4 c6 12. O-O
O-O 13. Re1 Rd8 14. c4 ({White should try} 14. g4 $14) 14... Bb7 15. Rb1 Nd7
16. Rb3 Rac8 17. Bb2 Re8 18. c5 Bf8 19. h4 {[%mdl 1024] White has compensation.
} Qd8 20. Bb1 Rc7 21. Qc2 {[%csl Gb1][%cal Rc2h7] [#]} f5 $1 22. Rbe3 {
Threatens to win with Qb3.} Bc8 23. Qb3 $40 {[%mdl 128] White is out for blood.
} (23. Rxe6 $6 Rxe6 24. Rxe6 Nxc5 $11) 23... Nf6 24. Bxf5 $1 ({Of course not} 
24. cxb6 $6 Rb7 $11) 24... Nd5 $2 {Loses the game.} (24... Qd5 $16 {keeps
fighting.} 25. Bg6 (25. cxb6 axb6 26. Bxe6+ Rxe6 $16) (25. Bxe6+ Bxe6 26. Rxe6
Qxb3 $16) 25... Qxb3 26. Rxb3 Rd8) 25. Bb1 $18 ({Less strong is} 25. Rxe6 Bxe6
26. Rxe6 bxc5 $14) (25. Bxe6+ Bxe6 26. Rxe6 Rxe6 $14) 25... Nxe3 26. Rxe3 Be7
$2 (26... bxc5 27. Qc2 g6) 27. Qc2 {[#] White threatens Qh7+ and mate.White is
clearly winning.} Bf6 28. Qh7+ Kf8 29. Ne5 Bxe5 30. dxe5 {White wants to mate
with Rf3+.} Qxh4 31. Bg6 {Qh8+ would kill now.} Bd7 32. Rd3 {Weighted Error
Value: White=0.09/Black=0.33} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.39"]
[White "Matlakov, Maxim"]
[Black "Sadhwani, Raunak"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2682"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,16,20,17,27,13,15,9,18,18,18,25,19,21,17,19,34,12,7,0,13,0,0,0,0,0,
9,9,9,9,23,9,12,8,8,0,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6
3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6. O-O {C65: Ruy Lopez: Berlin Defence (3...
Nf6), unusual lines and 4 0-0 Bc5.} Qe7 7. Nbd2 Bg4 8. h3 Bh5 9. a3 a5 10. Nc4
Nd7 11. g4 Bg6 12. b4 Bb6 {[#]} 13. Rb1 $146 ({Predecessor:} 13. Bd2 a4 14. Kg2
h5 15. Qe2 O-O-O 16. Rh1 f6 17. Nb2 Bf7 18. Nxa4 g5 19. Nxb6+ cxb6 {0-1 (47)
Firouzja,A (2728)-Aronian,L (2773) Lichess.org INT 2020}) 13... axb4 14. axb4
O-O 15. Nxb6 cxb6 16. Bg5 f6 17. Be3 Bf7 18. Nh4 g6 19. Qd2 b5 20. Bh6 Rfc8 {
The position is equal.} 21. f4 c5 22. Rf2 Ra2 (22... cxb4 {keeps more tension.}
23. Rxb4 Rxc2 24. Qxc2 Qxb4 25. Qc7 Qb1+) 23. g5 (23. Nf3 {with more
complications.} cxb4 24. Qxb4 Qxb4 25. Rxb4 exf4 26. Bxf4 Rcxc2 27. Rxc2 Rxc2
28. Rxb5 b6 29. Ne1) 23... cxb4 24. Qxb4 Qxb4 25. Rxb4 fxg5 26. Bxg5 Rcxc2 27.
Rxc2 Rxc2 28. Rxb5 Rc3 29. Rxb7 Rxd3 30. Bh6 Be6 {A rather calm draw. 
Weighted Error Value: White=0.04/Black=0.01} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.40"]
[White "Sethuraman, S.P.."]
[Black "Gelfand, Boris"]
[Result "1/2-1/2"]
[ECO "B56"]
[WhiteElo "2620"]
[BlackElo "2680"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,61,26,49,46,48,48,43,41,41,42,40,45,41,27,22,23,27,10,12,8,8,8,0,0,8,
8,8,8,11,-12,-10,-10,-10,-10,-10,-12,-12,-15,-12,-16,0,0,0,0,0,0,0,0,0,0]} 1.
e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bb5 Bd7 7. Be3 {7.Bg5 is
becoming the main line.} Ng4 8. Nxc6 {B56: Classical Sicilian: Unusual Lines.}
Nxe3 9. Nxd8 Nxd1 {[#]} 10. Nxf7 $1 {White is slightly better.} Nxc3 11. Bxd7+
({Much weaker is} 11. bxc3 Bxb5 12. Nxh8 g5 $17) 11... Kxf7 12. bxc3 {[#]} e6
$146 ({Predecessor:} 12... g6 13. Rb1 b6 14. Kd2 Bg7 15. h4 Rhd8 16. Bb5 d5 17.
exd5 Rxd5+ 18. Bd3 Rc8 {1/2-1/2 (24) Li,D (1992)-Wu,Y (1659) Changsha 2019})
13. f4 Ke7 14. Ba4 g6 15. Rd1 Rc8 {The position is equal.} 16. O-O Bg7 17. f5
Rhf8 {[%cal Rg6f5]} 18. fxe6 Kxe6 19. Bb3+ Ke7 20. Rxf8 Rxf8 21. Rf1 (21. Rd3 {
seems wilder.} b5 22. c4 b4 23. g3 Rc8 24. Kf2) 21... Rxf1+ 22. Kxf1 Bxc3 $11 {
[%mdl 4096] Endgame KB-KB} 23. Ke2 Be5 24. g3 g5 25. Kf3 h5 26. h3 Kf6 27. Bd5
b6 28. Bc6 h4 29. gxh4 gxh4 30. Ke2 Kg5 31. Kf3 {Weighted Error Value: White=0.
04/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.41"]
[White "Cheparinov, Ivan"]
[Black "Adly, Ahmed"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2659"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,66,22,30,27,16,18,0,39,40,42,44,53,49,45,15,20,25,22,4,4,4,6,0,0,0,0,
5,17,17,23,21,58,35,35,43,31,26,18,14,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6
2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Bf4 dxc4 6. e3 Nd5 7. Bxc4 Nxf4 8. exf4 Nb6 {
8...Nb6 scores better than 8...Bd6. D37: Queen's Gambit Declined: 5 Bf4.} 9.
Bd3 g6 10. h4 Nd5 11. g3 Bg7 12. h5 Nxc3 13. bxc3 c5 {[#]} 14. Rb1 $146 ({
Predecessor:} 14. Ne5 Qa5 15. Kf1 cxd4 16. cxd4 Qd5 17. Kg1 Bd7 18. Bc4 Qd6 19.
Qb3 Bc6 20. Re1 Bxe5 21. dxe5 {1-0 (29) Aravindh,C (2630)-Moroni,L (2536)
Moscow 2020}) 14... cxd4 15. cxd4 O-O 16. Kf1 b6 17. Be4 Rb8 18. Ne5 Bb7 19.
Qf3 Bxe4 20. Qxe4 {next Nc6 is good for White.} Qd6 21. Kg2 Rbd8 22. h6 Bh8 23.
Nc6 Rd7 24. Rbc1 Re8 25. Rc2 Bf6 ({Don't go for} 25... Bxd4 $2 26. Rd1 $18) 26.
Rhc1 {The position is equal.} Qf8 27. Ne5 Bxe5 28. dxe5 Qxh6 29. Rc7 Rxc7 30.
Rxc7 Rd8 {[#] And now ...Rd1 would win.} 31. Qc6 g5 32. f5 g4 {( -> ...Qh3+)}
33. Rc8 Rxc8 {Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.42"]
[White "Rakhmanov, Aleksandr"]
[Black "Van Foreest, Lucas"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2657"]
[BlackElo "2543"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,137,28,-8,0,0,-2,-10,16,19,25,16,32,-3,-26,8,19,18,18,18,19,22,26,10,
18,14,24,22,32,21,25,26,26,26,26,26,29,26,33,26,26,26,28,27,27,27,31,20,20,20,
20,20,20,20,41,41,63,41,41,41,41,0,41,41,45,0,42,0,44,46,50,21,22,21,26,23,26,
21,21,21,30,24,26,20,26,20,20,20,20,20,20,20,20,20,22,20,25,24,27,25,49,12,12,
12,24,14,24,18,18,8,9,0,0,0,109,9,164,5,233,5,318,0,481,0,0,0,460,0]} 1. Nf3 d5
2. e3 Nf6 3. c4 e6 4. b3 c5 5. Bb2 Nc6 6. cxd5 exd5 7. d4 cxd4 {A13: English
Opening: 1...e6.} 8. Nxd4 Bb4+ 9. Bc3 Qa5 {The position is equal. 9...Bd6 is
the hot move.} 10. Qd2 {[#] Black must now prevent Nxc6.} Bxc3 11. Nxc3 {[#]}
Bd7 $146 ({Predecessor:} 11... O-O 12. Be2 Re8 13. Rc1 Bd7 14. Nxc6 Bxc6 15.
O-O Rad8 16. Qd4 Ne4 17. b4 Nxc3 18. Rxc3 Qxa2 {1-0 (29) Artemiev,V (2706)
-Oganian,M (2435) Sochi 2018}) 12. Ncb5 Qxd2+ 13. Kxd2 Ne4+ 14. Ke1 Nxd4 15.
Nxd4 Rc8 16. f3 Nc5 17. Kd2 Ke7 18. Bd3 Ne6 19. Ne2 Rc7 20. h4 h5 21. Rhd1 g6
22. Ke1 Rd8 23. Rd2 Bc6 24. Rc1 Be8 25. Rcd1 Bc6 26. Kf2 a5 27. Rb1 Nc5 28. Bc2
Ne6 29. b4 axb4 30. Rxb4 Ra8 31. Bb3 (31. Rb2 {with more complications.} Rd7
32. Bb3 Kf8 33. Rd1 Ra3 34. Rbd2) 31... Ra5 32. Nf4 {[%cal Rf4d5]} Nxf4 33.
Rxf4 Rd7 34. Rfd4 Rc5 35. Kg3 Rc3 36. Kf2 Rd6 37. Rd1 Rd7 38. R1d2 {[%cal
Rb3d5]} Rd6 39. Rd1 Rd7 $1 40. R4d2 Ke8 41. Re1 Ke7 42. Rd4 Rd6 43. Ke2 Rc5 44.
Kd2 Rd8 45. Rd1 Ra8 46. Ke1 Rc3 47. Kf2 Rc5 48. Kg3 Rc3 49. Kf4 Kf6 50. R1d2
Re8 51. R4d3 Rxd3 52. Rxd3 $11 {[%mdl 4096] Endgame KRB-KRB} Ra8 53. Rd1 Ra3
54. Rd2 Ra8 55. Rd4 Rc8 56. Kg3 Ke5 57. Kf2 Kd6 58. Ke1 Rc7 59. Kd2 Re7 60. Rd3
Re5 61. Rc3 g5 62. g3 Re8 (62... f6 $11 {remains equal.}) 63. Rd3 (63. hxg5 $16
Rh8 64. Rd3) 63... Kc5 $2 {[#]} (63... f6 $11) 64. Ke1 $2 (64. hxg5 $18 Rh8 65.
Ke1) 64... f5 $2 (64... f6 $11) 65. Kf2 $2 (65. hxg5 $18 {a3 is the strong
threat.} Kd6 66. f4) 65... f4 $2 {[%mdl 8192]} (65... g4 $11 {and Black has
nothing to worry.}) 66. exf4 $2 (66. hxg5 $18 fxe3+ 67. Rxe3) 66... Rf8 $2 {
[%mdl 8192]} (66... gxh4 $11 67. gxh4 Rf8) 67. Ke3 $2 ({White should try} 67.
fxg5 $18 {Strongly threatening g4!} Kd6 68. f4) 67... Re8+ $2 {[%mdl 8192]} (
67... gxf4+ $11 {and Black stays safe.} 68. gxf4 Re8+ 69. Kf2 Rf8) 68. Kf2 $18
Rf8 69. Ke3 $2 {Weighted Error Value: White=0.08/Black=0.05} (69. fxg5 $18 Kd6
70. f4) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.43"]
[White "Nguyen, Thai Dai Van"]
[Black "Cori, Jorge"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2577"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,92,29,25,32,20,26,7,0,5,0,14,19,17,31,28,38,48,36,31,43,45,34,19,20,
20,13,19,39,0,0,0,0,-14,-2,-4,-4,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-14,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4.
cxd5 cxd5 5. Nc3 Nc6 6. Bf4 a6 7. Rc1 $1 {[%mdl 4] is more profitable than 7.
e3 at the moment.} e6 8. e3 Bd6 {D13: Slav Defence: Exchange variation without
...Bf5.} 9. Ne5 O-O 10. Bd3 Bxe5 11. Bxe5 Nxe5 12. dxe5 Nd7 13. f4 Qb6 {[#]}
14. Qd2 $146 ({Predecessor:} 14. Qe2 f6 15. O-O Nc5 16. Bb1 f5 17. Rf3 Bd7 18.
Rh3 g6 19. Qf2 Rac8 20. Rd1 {0-1 (27) Zwetsloot,P (1806)-Straver,R (2143)
Leiden 2011}) 14... Nc5 15. Bb1 Bd7 16. Ne2 Rac8 17. Kf2 a5 18. Rc3 Qd8 19.
Rhc1 b6 20. Kg1 f6 21. Qd4 Bb5 {The position is equal.} 22. Ng3 {[%cal Be2g3,
Bg3h1,Bh1f2][%mdl 32]} f5 23. Nh1 Rf7 24. Nf2 Rfc7 25. h3 g6 26. Kh2 h5 27. b3
{[%cal Bb2b3,Bb3b4][%mdl 32]} h4 28. Bd3 Be8 29. Be2 Qe7 30. b4 Na4 31. Rxc7
Rxc7 32. Rxc7 Qxc7 33. bxa5 bxa5 34. a3 Qc2 35. Bd1 Qxf2 36. Bxa4 Qg3+ 37. Kh1
Qe1+ 38. Kh2 Qg3+ 39. Kh1 Qe1+ 40. Kh2 Bf7 41. Qb6 Qg3+ 42. Kh1 Qe1+ 43. Kh2
Kg7 44. Qa7 Qg3+ 45. Kh1 Qe1+ 46. Kh2 Qg3+ {Weighted Error Value: White=0.04/
Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.44"]
[White "Goryachkina, Aleksandra"]
[Black "Niemann, Hans Moke"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2602"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,89,0,0,0,1,0,14,0,0,0,0,-4,78,85,73,70,175,139,142,98,83,70,57,42,31,
44,43,25,37,24,59,51,55,58,55,59,59,23,57,59,44,51,73,6,0,0,0,0,0,0,15,30,18,
17,112,125,442,427,353,181,172,189,153,117,125,122,118,0,110,0,105,0]} 1. d4 d5
2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. b3 O-O 8. Be2 b6 9. O-O
Bb7 10. Bb2 Qe7 11. Rfe1 {D45: Semi-Slav: 5 e3.} c5 12. cxd5 exd5 13. Bd3 {
The position is equal.} Rac8 14. dxc5 bxc5 {[#]} 15. Bf5 $146 ({Predecessor:} 
15. e4 c4 16. bxc4 dxc4 17. Bf1 Bb4 18. a3 Ba5 19. h3 Ne5 20. Nd4 Nd3 {1/2-1/2
(20) Pushkov,N (2430)-Cherniaev,A (2335) Orel 1992}) 15... Rfe8 (15... Bc6 $11)
16. Nb5 $16 Bb8 17. Bxf6 gxf6 (17... Nxf6 $14 18. Bxc8 Rxc8) 18. Nc3 Rcd8 19.
Ne2 Ne5 20. Nxe5 fxe5 21. e4 d4 22. Nc1 Bc7 23. Nd3 Ba5 24. Rf1 Bc3 25. Rad1
Kh8 26. f4 exf4 27. Rxf4 Rg8 28. Rdf1 {[%cal Bd1f1,Bf1f3,Bf3h3][%mdl 32]} Rg7
$1 29. R1f3 Ba6 30. Rh3 Qg5 {aiming for ...Bxd3.} 31. Rg4 (31. g3 $16) 31...
Qd2 $11 32. Rxg7 Kxg7 33. Rg3+ Kf8 34. Qb1 (34. Qxd2 Bxd2 35. Kf1 (35. Nxc5 $2
Be3+ 36. Kh1 d3 $19) 35... h6 $17) 34... c4 35. bxc4 Bxc4 36. Bxh7 {h4 is the
strong threat.} Ke7 (36... Qxa2 37. Rg8+ Ke7 38. Qb7+ Rd7 39. Qb8 Qa1+ 40. Kf2
Be1+ 41. Nxe1 Qa2+ 42. Kg1) (36... Bxd3 $11 {keeps the balance.} 37. Rxd3 Qe1+
38. Qxe1 Bxe1) 37. Ne5 $16 Bxa2 $2 {[%mdl 8192]} (37... Qe1+ $16 {is more
resistant.} 38. Qxe1 Bxe1) 38. Qb7+ $1 $18 {[%mdl 64] Double Attack} Kd6 {
[%cal Rd2e1]} 39. Nxf7+ ({Resist} 39. Rf3 d3 $18) (39. Qc6+ $142 Kxe5 40. Rf3
Qd1+ 41. Rf1 Qxf1+ 42. Kxf1) 39... Bxf7 {[%cal Rd2e1] [#]} 40. e5+ $1 Kc5 {
[%cal Rd2e1]} ({Avoid the trap} 40... Kxe5 $2 41. Qe7+ Kd5 42. Qxd8+ Kc5 43.
Qc7+ Kb4 44. Qe7+ Ka5 45. Qxa7+ Kb4 46. Qe7+ Ka5 47. Qc7+ Kb4 48. Qe7+ Ka5 49.
Qxf7 $18) 41. Qxa7+ Kb4 {[%cal Rd2e1]} 42. Qe7+ {[%mdl 1024] White has strong
compensation.} ({Much less strong is} 42. Qxf7 $6 Qe1+ 43. Qf1 Qxe5 $14) 42...
Ka4 {[%cal Rd2e1]} 43. Qa7+ Kb4 $1 {[%cal Rd2e1]} 44. Qe7+ Ka4 {[%cal Rd2e1]}
45. Qa7+ {Weighted Error Value: White=0.22/Black=0.22} (45. Qxf7 $16 d3 {[#]}
46. Rxd3 $1 {[%mdl 64] Decoy} Rxd3 47. Qc4+ {[%mdl 64] Double Attack} Ka3 48.
Bxd3) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.45"]
[White "Sindarov, Javokhir"]
[Black "Durarbayli, Vasif"]
[Result "1/2-1/2"]
[ECO "C85"]
[WhiteElo "2587"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,60,0,0,-15,-7,-34,-35,-52,-32,-31,-31,-50,-30,-28,-28,-32,-32,-36,0,
0,0,0,0,0,9,-32,14,3,6,6,10,11,13,14,8,8,14,-3,23,4,52,9,41,29,23]} 1. e4 e5 2.
Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Bxc6 dxc6 7. d3 Nd7 8. Nbd2 f6 9.
Nc4 {9.Nc4 scores better than 9.Nh4.} Nc5 10. Nh4 {C85: Closed Ruy Lopez:
Deferred Exchange Variation.} g6 11. b4 {[#]} Na4 $146 ({Predecessor:} 11...
Ne6 12. Rb1 O-O 13. Be3 b6 14. Nf3 a5 15. a3 Ba6 16. Nfd2 axb4 17. axb4 Qd7 {
1/2-1/2 (30) Antoniewski,R (2550)-Kuljasevic,D (2591) Austria 2014}) 12. Bd2 {
Black is slightly better.} Be6 13. Na5 Rb8 14. Nf3 Qd7 15. Nb3 O-O 16. Qe2 Rbd8
17. Rab1 b5 18. Qe3 Rfe8 19. Rfd1 Bf7 20. h3 Bd6 21. Kh1 a5 22. Nxa5 Bxa2 23.
Ra1 Be6 24. Nb7 Ra8 25. Nxd6 cxd6 26. Nh2 d5 27. f3 Rac8 28. Qf2 Qe7 29. Rf1 c5
30. exd5 Bxd5 {Weighted Error Value: White=0.07/Black=0.11} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.46"]
[White "Morovic Fernandez, Ivan"]
[Black "Yilmaz, Mustafa"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2510"]
[BlackElo "2626"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,92,0,0,0,0,8,18,6,1,0,19,-28,-17,-16,-19,-26,-22,-21,-19,-25,-16,-14,
-36,-20,-20,-47,-47,-49,-66,-126,-139,-191,-200,-194,-214,-197,-192,-214,-206,
-193,-200,-212,-225,-218,-225,-245,-228,-292,-229,-311,-225,-391,-365,-354,
-360,-339,-330,-339,-339,-339,-337,-327,-322,-327,-327,-516,-741,-954,-960,
-723,-691,-4831,-4702]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6.
Be2 e5 7. Nb3 Be7 8. O-O O-O 9. Be3 Be6 10. Qd2 Nbd7 {[%cal Bb8d7,Bd7b6,Bb6c4]
[%mdl 32]} 11. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Nb6 12. a5 {B92: Sicilian
Najdorf: 6 Be2.} Nc4 13. Bxc4 Bxc4 14. Rfd1 {The position is equal.} Rc8 15.
Qe1 {[#]} Qe8 $146 ({Predecessor:} 15... Qc7 16. Nd2 Be6 17. Nf1 Qc6 18. Bg5 h6
19. Bxf6 Bxf6 20. Ne3 Bg5 21. Rd3 Bxe3 22. Qxe3 Rfd8 23. Qd2 Qc7 24. h3 Kh7 25.
Rf3 Qc5 26. b3 Rd7 27. Rd3 {1/2-1/2 (27) Rakay,K (2239)-Krakovsky,P (2287)
ICCF email 2017}) 16. Nc1 Ng4 17. Bb6 f5 18. h3 Nf6 19. exf5 Qh5 20. b3 Bf7 {
aiming for ...Rxc3!} 21. Nd3 Qxf5 22. Nb4 $1 Be6 $36 {[%mdl 2048] Black has
some pressure.} 23. Ne2 d5 24. Ng3 Qg5 25. Ra4 {White is now going downhill.} (
25. Nd3 $15) 25... Rfe8 $17 26. h4 {[#]} (26. Nd3 $17) 26... Qg6 $1 $19 (26...
Qxh4 27. Nxd5 Ng4 28. Nxe7+ Rxe7 29. Nf1 $11) 27. Nd3 Bd6 ({Avoid the trap} 
27... Rxc2 $2 28. Nxe5 Qxg3 29. fxg3 $18) 28. h5 {[#]} Qf7 {...e4 is the
strong threat.} 29. Nxe5 Bxe5 30. Qxe5 Bd7 {[%mdl 64] Discovered Attack} ({
Stronger than} 30... Rxc2 31. Qg5 $11) 31. Qf4 Bxa4 ({Worse is} 31... Rxc2 32.
Raa1 $11) 32. bxa4 h6 33. Bd4 Rxc2 34. f3 Rc6 35. Rb1 Qc7 36. Qh4 (36. Qxc7
Rxc7 37. Kf1) 36... Rc1+ 37. Rxc1 Qxc1+ 38. Kh2 Qg5 39. Qxg5 hxg5 {[%mdl 4096]
Endgame KRN-KBN} 40. h6 Kh7 41. hxg7 Kg6 42. Kh3 Rg8 43. Bxf6 (43. Nf1 {
was called for.}) 43... Kxf6 {Black is clearly winning.} 44. Kg4 d4 45. Ne4+
Kxg7 46. Nxg5 d3 {Weighted Error Value: White=0.53/Black=0.08} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.47"]
[White "Kravtsiv, Martyn"]
[Black "Bartel, Mateusz"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2625"]
[BlackElo "2597"]
[Annotator "TA"]
[PlyCount "204"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,204,0,0,0,33,30,24,17,24,16,16,16,17,17,14,10,10,14,11,13,25,0,55,7,
10,10,13,7,12,21,20,27,33,18,66,64,77,39,52,0,0,0,0,0,0,-54,-54,-54,-50,-81,
-89,-81,-87,-85,-85,-90,-84,-93,-93,-93,-93,-93,-95,-152,-145,-154,-152,-470,
-548,-548,-531,-477,-293,-440,-455,-437,-370,-276,-302,-1701,-1278,-29948,
-12828,-6535,-4806,-29961,-4636,-4614,-84,-85,-85,-85,-85,-107,-85,-100,-100,
-122,-129,-136,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. e5
c5 4. dxc5 e6 5. a3 Bxc5 6. Nf3 {B12: Caro-Kann: Advance Variation.} a6 7. Bd3
Ne7 8. O-O {White has an edge.} Nbc6 9. b4 Ba7 10. Bb2 Ng6 11. Nbd2 Nf4 12. Nb3
{[#]} O-O $146 ({Predecessor:} 12... f6 13. Nc5 O-O 14. exf6 gxf6 15. Bc1 Nxd3
16. cxd3 b6 17. Nb3 Kh8 18. Bb2 Bd7 {1/2-1/2 (42) Yurov,A (2453)-Baer,L (2414)
ICCF email 2018}) 13. Qd2 Nxd3 14. cxd3 d4 15. Qf4 f6 ({Better is} 15... Qd5
$11 16. Nbxd4 Bd7) 16. exf6 ({Not} 16. Bxd4 $2 fxe5 17. Qe4 exd4 $19) (16.
Nfxd4 Nxe5 17. Qe4 Qd5 $11) 16... Rxf6 17. Qe4 {[%cal Rb3d4]} e5 18. Nxe5 Bf5
19. Nxc6 bxc6 20. Qe5 {[%cal Rb3d4]} Bxd3 21. Rfe1 {[%cal Rb2d4]} Bc4 22. Nc5
Bxc5 23. bxc5 Rg6 24. Bxd4 ({White should try} 24. Qxd4 $14 Bd5 25. g3) 24...
Bd5 $11 25. g3 Qh4 26. f3 $1 Rg5 27. Be3 {[#]} Qxh2+ $1 $15 28. Kxh2 Rxe5 29.
Bd4 Rh5+ 30. Kg2 Rf5 31. Re3 Raf8 {[%cal Rf5f3]} 32. Rf1 h5 33. Re7 R8f7 ({
Wrong is} 33... Bxf3+ $2 34. Rxf3 $1 {[%mdl 512]} R5f7 35. Rfxf7 $18) ({
Worse is} 33... Rxf3 34. Rxg7+ Kh8 35. Rxf3 $16) 34. Rxf7 Kxf7 $17 {[%mdl 4096]
Endgame KRB-KRB} 35. Kf2 g5 36. Kg1 (36. f4 $142) 36... Bxf3 37. Be3 Ke6 38.
Bxg5 $2 (38. Rb1 $17 {is a better chance.}) 38... Rxg5 $19 39. Rxf3 Rxc5 $17 {
KR-KR} 40. Rf4 Ra5 41. Rh4 (41. Kg2 $142) 41... Rf5 $19 42. Ra4 Kd5 43. Rxa6 {
[#]} c5 $1 44. Ra4 $2 (44. a4 Kd4 45. a5) 44... Rf8 45. Rh4 c4 46. Rxh5+ Kd4
47. Kg2 c3 48. g4 Rf1 $2 49. Kxf1 $17 {Intending Ke2 and mate. KR-KP} c2 50.
Kg2 {Threatening mate with Rh1.} c1=Q {KQ-KR} 51. Rf5 Ke4 (51... Qxa3 $2 52.
Rf3 $19) 52. a4 Qc2+ 53. Kg3 Qb3+ 54. Kh4 Qxa4 (54... Qb6 $17 55. Kh5 Qd8) 55.
Kg5 {The position is equal.} Qe8 (55... Qa1 {looks sharper.} 56. Rf4+ Ke3 57.
Rf5 Ke4) 56. Kh4 (56. Rf4+ {looks sharper.} Ke5 57. Rf5+ Ke6 58. Kh4 Qd7 59.
Kg5) 56... Qg6 (56... Qa4 {with more complications.}) 57. Kh3 (57. Rf1 {
is more complex.} Ke3 58. Rf5 Ke4) 57... Qh6+ 58. Kg3 $1 Qh1 59. Rf4+ Ke3 (
59... Kd3 {seems wilder.} 60. Rf3+ Kc2 61. Rf2+ Kb1 62. Rf5 Kc2) 60. Rf5 Qe1+
61. Kh3 {White threatens Re5+ and mate.} Ke4 62. Rf7 $1 {[%cal Rf7e7] White
wants to mate with Re7+.} Qc3+ (62... Qe3+ {seems wilder.} 63. Kh4 Qh6+ 64. Kg3
Qe3+ 65. Kh4) 63. Kh4 Qh8+ (63... Qa1 {is more complex.} 64. Rf5 Ke3 65. Kg3
Ke4 66. Kh4) 64. Kg3 Qb8+ (64... Qa1 {is more complex.} 65. Kh4 Qd4 66. Rf5
Qd8+ 67. Kg3 Qe8) 65. Kh4 Qh2+ (65... Qb1 {is more complex.} 66. Rf5 Ke3 67.
Kg3 Qg1+ 68. Kh4 Kd4) 66. Kg5 Ke5 (66... Qg1 {keeps more tension.} 67. Rf6 Qd1
68. Rf4+ Ke5 69. Rf5+ Ke6) 67. Rf5+ Ke6 68. Rf6+ Ke7 69. Rf3 Qg2 (69... Qh1 {
looks sharper.} 70. Rf5 Qc1+ 71. Kh5 Kd8 72. Kh4 Kc7) 70. Rf5 $1 Qh3 71. Kf4
Qh4 72. Kf3 Qh2 73. Rh5 $1 {[%cal Rh5h2]} Qb8 74. Rf5 $1 Ke6 75. Kg2 Qb3 76.
Kh2 Qe3 77. Kg2 Qc3 78. Kh2 Qe1 79. Kh3 Kd6 80. Kg2 Ke7 81. Kf3 Qh4 82. Rh5 Qe1
83. Rf5 Ke6 84. Kg2 Qh4 85. Kf3 Qh3+ 86. Kf4 Qg2 {And now ...Qd2+ would win.} (
86... Qf1+ {with more complications.} 87. Kg5 Qc1+ 88. Kh5 Qh1+ 89. Kg5 Qb1)
87. Kg5 Qg3 88. Kh5 Qh3+ 89. Kg5 Qh2 90. Rf6+ Ke5 {...Qh7 is the strong threat.
} 91. Rf7 Ke4 {Strongly threatening ...Qd6.} 92. Rf5 Qh8 {White must now
prevent ...Qg7+.} 93. Rf4+ Ke3 {( -> ...Qg8+)} 94. Rf5 Ke2 95. Rf4 Qd8+ (95...
Qa1 {is interesting.} 96. Rf5 Qg7+ 97. Kf4 Qc3 98. Kg5 Qc1+) 96. Kh5 Qe8+ (
96... Qd1 {is more complex.} 97. Rf5 Qg1 98. Kh4 Qa7 99. Kg5 Kd1) 97. Kh4 Qe7+
(97... Qe3 {feels hotter.} 98. Rf5 Qg1 99. Re5+ Kd1 100. Rd5+ Kc2) 98. Kh5 $1
Qd8 {Threatens to win with ...Qh8+.} 99. Rf5 $1 Ke3 {aiming for ...Ke4.} 100.
Rf1 $1 Qh8+ 101. Kg5 $1 Qh7 {Hoping for ...Qh8.} 102. Rf5 Ke4 {White happily
takes the draw.  Weighted Error Value: White=0.45/Black=0.23} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.48"]
[White "Kuzubov, Yuriy"]
[Black "Miezis, Normunds"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2624"]
[BlackElo "2467"]
[Annotator "TA"]
[PlyCount "141"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,141,44,45,50,49,49,50,41,48,45,53,33,41,16,33,26,47,23,52,47,70,66,
62,60,72,55,54,0,0,0,46,46,54,56,64,44,34,64,62,66,55,10,10,0,37,29,79,15,27,6,
19,10,41,31,26,10,29,0,0,0,0,0,0,0,0,-54,11,14,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,30,52,109,96,97,58,12832,12833,12833,12834,12834,
12835,12835,12835,12836,12835,12838,12835,12839,12838,12841,12841,12842,12843,
12844,12844,12845,12845,12845,12846,12849,12848,12849,12849]} 1. e4 c5 2. Nf3
e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Ne7 6. O-O Nbc6 7. Nxc6 {7.Nxc6 was played by
the boomers.} Nxc6 8. Be3 {B42: Sicilian: Kan Variation: 5 Bd3.} Be7 9. c4 b6
10. Nc3 {White is slightly better.} Bc5 {[#]} 11. Qd2 $146 ({Predecessor:} 11.
Qh5 d6 12. Bg5 Qc7 13. Kh1 Ne5 14. Be2 Ng6 15. Rad1 Bb7 16. a3 e5 17. b4 Bd4
18. Nd5 Bxd5 19. cxd5 Qc2 20. Rc1 Qa4 21. Qh3 O-O {1/2-1/2 (21) Hergott,
D-Kochyev,A (2540) Graz 1981}) 11... O-O 12. f4 d6 13. Kh1 Rb8 14. Rad1 Qe7 15.
a3 a5 16. Bc2 Ba6 17. Ba4 Rbc8 18. Bb5 Bb7 19. Na4 Qc7 20. Nxc5 (20. f5 $14)
20... dxc5 $11 21. Qd6 e5 22. fxe5 Nxe5 23. Bf4 Qxd6 24. Rxd6 f6 25. Rxb6 Bxe4
26. Kg1 Rcd8 27. Re1 Ba8 28. Be3 Nd3 29. Rd1 Nxb2 30. Rdd6 (30. Rxd8 $1 $16
Rxd8 31. Bxc5) 30... Nd3 31. Bd2 Be4 32. Bxa5 Ra8 33. Ra6 Rxa6 34. Bxa6 Ne5 (
34... Kf7 {seems wilder.} 35. Bd8 Nb2 36. Bb5 Bd3 37. a4 Bxc4 38. Bc7 Ra8) 35.
Bc3 Nf7 36. Re6 Ng5 37. Rb6 Rd8 38. h4 Nf7 39. Re6 (39. Rb5 $11) 39... Nd6 (
39... Rd1+ $1 $15 40. Kf2 Nd6) 40. Ba5 Rd7 {[#] Strongly threatening ...Bf5.}
41. Bc7 $1 Rxc7 42. Rxd6 {[%mdl 4096] Endgame KRB-KRB} Kf7 43. Bb5 Ke7 44. Rd2
Ra7 45. a4 Ke6 46. Kf2 f5 47. Ke3 g6 48. g3 h6 49. Rd8 g5 50. Rh8 Ke5 51. Re8+
Kd6 52. hxg5 hxg5 53. Rg8 Bc2 54. Rxg5 Bxa4 55. Kf4 {Rg6+ is the strong threat.
} Ra5 (55... Ke6 $14) 56. Rg6+ $16 ({Don't play} 56. Kxf5 $6 Bxb5 57. Rg6+ Ke7
$11) 56... Ke7 57. Rb6 $1 Bxb5 $4 {[%mdl 8192] Black cannot hold the game
after this.} (57... Bc2 $14) 58. Rxb5 $14 {KR-KR. White is clearly winning.} ({
Not} 58. cxb5 c4 $11) 58... Ra1 59. Kxf5 Kd6 {[#]} 60. Rb6+ $1 Kc7 {[#]} 61.
Re6 $1 {[%cal Re6e7]} Rf1+ 62. Ke5 Rd1 63. Rf6 Kd7 64. Rf4 Ke7 65. g4 Rd2 66.
g5 Rd1 67. g6 Rg1 68. Rf7+ Ke8 69. Kf6 Rg4 70. Re7+ Kd8 71. Re5 {Weighted
Error Value: White=0.09/Black=0.11} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.49"]
[White "Bjerre, Jonas Buhl"]
[Black "Adhiban, B.."]
[Result "1-0"]
[ECO "B67"]
[WhiteElo "2569"]
[BlackElo "2672"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,87,54,43,49,36,48,27,46,-23,44,26,106,107,135,84,81,93,104,62,103,79,
102,101,161,13,150,36,129,164,145,145,154,151,160,159,168,160,163,166,163,162,
163,160,256,256,256,253,594,564,667,563,922,368,4133,3611,2452,2254,6087,6428,
6536,5535,29984,29985,29985,29986]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6
5. Nc3 d6 6. Bg5 a6 7. Qd2 e6 8. O-O-O Bd7 9. f4 b5 10. Bxf6 gxf6 11. Kb1 Qb6
12. Nxc6 Bxc6 13. f5 h5 {B67: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7,
lines without 9 f4 Be7.} 14. fxe6 fxe6 15. Qf4 {has lost popularity (15.Bd3).}
Be7 {White has an edge.} 16. g3 (16. Bd3 $14) 16... Qc5 (16... b4 $11 17. Ne2
e5) 17. Bh3 $14 Bd7 (17... Kf7 $11) 18. Ne2 $16 Kf7 19. Qd2 {[#]} ({White
should try} 19. Qf3) 19... h4 $146 ({Predecessor:} 19... Rac8 20. Rhf1 Rc7 21.
Nd4 Rg8 22. Rf3 Qg5 23. Qd3 Qe5 24. Rf2 Rc4 {1-0 (42) Sankalp,G (2359)-Dai,C 
(2480) Xingtai 2019}) 20. Nf4 {And now e5! would win.} Rag8 21. Rdf1 Bc8 22.
Qe1 hxg3 23. hxg3 Qg5 {[#]} (23... a5 $16 {keeps fighting.}) 24. Rh2 ({White
should play} 24. a3 $1 $18) 24... Rh6 (24... e5 $11 25. Bxc8 Rxh2 26. Be6+ Kf8)
25. Rfh1 (25. Qc3 $16) 25... Rgh8 (25... Bf8 $14) 26. Qc3 {Black must now
prevent Qxc8!} e5 27. Qxc8 {[%mdl 64] Remove Defender} ({But not} 27. Qb3+ $6
Ke8 $11) 27... Rxc8 28. Be6+ {[%mdl 64] Discovered Attack} Kg7 29. Rxh6 Qxh6
30. Rxh6 Kxh6 31. Bxc8 exf4 32. gxf4 {[%mdl 4096] Endgame KB-KB} a5 {[#]} 33.
c3 $1 d5 (33... b4 $16 34. cxb4 axb4) 34. exd5 $18 Bd6 35. Bd7 b4 $2 (35... Kg6
36. Kc2 (36. Bxb5 Kf5 $16) 36... Bxf4) 36. Kc2 Bxf4 37. Kb3 bxc3 38. bxc3 {
[%cal Bb2c3,Bc3c4][%mdl 32]} Kg7 $2 (38... Kg5 39. Ka4 Bc7) 39. c4 Be3 40. Ka4
Kf7 41. Kb5 Ke7 42. Kc6 Ba7 43. d6+ Kd8 44. Bf5 {Weighted Error Value: White=0.
30/Black=0.83} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.50"]
[White "Gretarsson, Hjorvar Steinn"]
[Black "Jumabayev, Rinat"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2577"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,74,6,14,18,41,36,31,29,67,63,77,86,95,91,78,94,97,56,92,0,84,66,128,
118,119,118,137,147,133,134,146,139,118,148,286,280,293,295,296,306,285,289,
304,290,307,298,512,498,438,422,366,148,214,9,0,-57,139,147,152,-56,-56,-56,
-57,-195,-199,-1121,-1116]} 1. c4 e5 2. Nc3 d6 3. d4 exd4 4. Qxd4 Nc6 5. Qd2 g6
6. b3 {A21: English Opening: 1...e5 2 Nc3.} Bg7 7. Bb2 Nf6 8. g3 {[#] White is
slightly better.} h5 $146 ({Predecessor:} 8... O-O 9. Bg2 Re8 10. Nf3 a5 11.
O-O Bf5 12. Rad1 Qd7 13. Rfe1 Ne4 14. Nxe4 Bxe4 15. Bxg7 Kxg7 16. Qc3+ f6 17.
a3 Re7 {1-0 (76) Le,Q (2709)-Bortnyk,O (2598) Lichess.org INT 2020}) 9. Nf3 O-O
10. Bg2 a5 11. O-O Re8 12. Rad1 Nb4 13. Rfe1 Bd7 14. e4 (14. Ng5 $16) 14... Bc6
(14... Bg4 $1 $11) 15. Nd4 $16 {Black must now prevent a3.} Ng4 (15... Bd7 $1
$14) 16. h3 Ne5 17. Re3 Nd7 18. Nce2 Bh6 19. f4 {Threatens to win with a3.}
Nxa2 20. Nxc6 bxc6 {[#]} 21. g4 $1 $40 {[%mdl 128] White wants a kill.} hxg4 (
21... Nb4 $16) 22. hxg4 $18 Nb4 23. g5 (23. Rh3 Bg7 $16) 23... Bg7 24. Bxg7
Kxg7 25. Qc3+ f6 26. gxf6+ {[%mdl 64] Overworked Piece} Nxf6 27. e5 Ng4 $2 (
27... Nh5 28. exd6+ {[%mdl 64] Discovered Attack} Kf7) 28. exd6+ Kf7 29. Rh3 {
White wants to mate with Rh7+.} Qf6 ({And not} 29... Rxe2 30. Rh7+ Ke6 31. Bh3
Qh4 32. Rxh4 Rf8 33. Bxg4+ Kf7 34. Bxe2) 30. Bf3 (30. dxc7 $18 {is the precise
move to win.} Qxc3 31. Nxc3) 30... Re3 (30... Qxc3 $16 {is a better defense.}
31. Nxc3 Nf6) 31. Qd2 $2 ({White should play} 31. Qd4 $18 Rxf3 32. Qxf6+ Nxf6
33. Rxf3) 31... Rd3 $11 {[%mdl 64] Double Attack} 32. Qe1 {[#]} (32. Qc1 $11
Rxf3 33. Rxf3) 32... Qxd6 $2 (32... Nc2 $1 $15 {keeps the upper hand.} 33. Qf1
Nge3 {[%mdl 64] Double Attack} 34. Rxd3 (34. Rh7+ $2 Kg8 $19) 34... Nxf1 35.
dxc7 Nfe3) 33. Rxd3 $16 Nxd3 34. Qc3 $2 ({White has to play} 34. Rh7+ $16 Kg8
35. Qh4 Qc5+ 36. Kh1) 34... Nf6 $15 {aiming for ...Re8.} 35. Bxc6 Qc5+ 36. Nd4
(36. Qd4 $1 $15 Qxc6 37. Qxd3) 36... Nxf4 $19 37. Bxa8 $2 (37. Re3 Rd8 38. Bd5+
N4xd5 39. cxd5 Rxd5 40. Qxc5 Rxc5 41. Ne6 Rc1+ 42. Kg2) 37... Ne2+ $1 {[%mdl
64] Double Attack.  Weighted Error Value: White=0.61/Black=0.32} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.51"]
[White "Meshkovs, Nikita"]
[Black "Paravyan, David"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2550"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "197"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,197,28,19,-33,-35,-94,-90,-116,-124,-125,-133,-111,-122,-167,-146,
-149,-131,-127,-142,-134,-128,-137,-125,-150,-71,-58,-74,-64,-58,-72,-32,-24,
-16,-28,0,0,0,0,0,-2,-3,-4,0,0,0,-9,-7,-7,-17,-52,-14,-36,0,0,0,-171,-178,-173,
-8,-15,-8,-8,0,-8,-8,-8,-8,-16,-18,-29,-35,-29,-37,-36,-8,-8,-8,-15,-8,-24,-33,
-43,-30,-65,-62,-61,-73,-80,-19,-30,-29,-44,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,0,
12,0,0,0,13,14,14,0,0,0,144,126,83,141,85,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-385,-197,-180,-180,-180,-175,-173,-173,-166,-118,-89,-99,-145,0,0,0,0,0,0,0,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6
4. Nc3 Be7 5. Bf4 O-O 6. c5 {D37: Queen's Gambit Declined: 5 Bf4.} ({White
should try} 6. e3 $11) 6... b6 $15 7. b4 (7. cxb6 $1 $15 axb6 8. e3) 7... a5 $1
$17 8. a3 {Black is better.} Ne4 9. Rc1 axb4 (9... bxc5 $6 10. bxc5 g5 11. Bg3
$11) 10. axb4 Nc6 (10... bxc5 11. bxc5 c6 12. g3 $15) 11. b5 Na5 {[#]} 12. e3
$5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 12. c6 Nxc3 13. Rxc3
Bb4 14. Bd2 Nc4 15. Rb3 Nxd2 16. Rxb4 Ne4 17. e3 Ra2 18. Rg1 {0-1 (39) Purygin,
A (2256)-Alavkin,A (2439) Samara 2009}) 12... bxc5 13. dxc5 Nxc5 14. Be2 Ncb3
15. Rb1 Bb4 16. Qc2 {and if 0-0 works, White does fine.} d4 ({Better is} 16...
Qe7 17. O-O Qc5) 17. Nxd4 Nxd4 18. exd4 Qxd4 {[%mdl 64] Double Attack} 19. Be5
Qc5 20. O-O Bb7 {And now ...Rfd8 would win.} 21. Qd3 Rad8 22. Qg3 {[%csl Ge5]
[%cal Rg3g7]} f6 23. Bxc7 Qxc3 (23... Bxc3 $6 24. Rbc1 $16) 24. Bxd8 Rxd8 $40 {
[%mdl 128] Black has some attack.} 25. Qg4 Bc5 26. Qxe6+ Kf8 $1 27. Rbc1 Qb3
28. Qg4 {[#]} Rd4 $1 29. Qg3 (29. Qf5 Qd5) 29... Bd6 30. Qc3 Qd5 {[%csl Gb7]
[%cal Rd5g2]} 31. Bf3 {[%cal Rf3d5]} Qe5 {[%csl Gd6][%cal Re5h2]} 32. g3 $2 (
32. Rfe1 $1 $11 {and White is okay.} Qxh2+ 33. Kf1) 32... Bb4 $19 33. Qe3 Qxe3
(33... Bd2 $1 $19 {[%cal Rd2e3]} 34. Qxe5 fxe5 35. Bxb7 Bxc1 36. Rxc1 Nxb7) 34.
fxe3 $11 Rd7 35. Bxb7 Rxb7 36. Rf5 Ke7 37. Rd5 $1 Rd7 38. Rd4 Bd2 39. Rxd7+
Kxd7 40. Rd1 Nc4 41. Kf2 {With the idea Ke2.} Ke6 42. e4 Ba5 43. Kf3 Bb6 44.
Ke2 Nd6 45. Kd3 Ke5 (45... Nxb5 $2 46. Rb1 $18) 46. Re1 h5 ({Not} 46... Nxb5 $2
47. Rb1 $18) 47. Rc1 Nxe4 ({Wrong is} 47... Nxb5 $2 48. Rb1 $18) 48. Rc8 {
aiming for Re8+.} Kf5 (48... Nd6 $17 49. Rg8 g5) 49. Rc6 Bg1 50. h3 Nxg3 51.
Rc1 Bf2 52. Rc2 Bb6 53. Rc6 Ba5 (53... Ba7 {feels hotter.} 54. Rc7 Bb8 55. Rxg7
Ne4 56. b6 Nf2+) 54. Ra6 Bc7 (54... Bb4 {is more complex.} 55. Kc4 Bd2 56. b6
Bf4 57. b7 g5) 55. Ra7 Be5 56. Rxg7 Ne4 57. b6 Kf4 (57... Ke6 {looks sharper.}
58. Rh7 Kd5 59. Rxh5 Nd6 60. h4 Kc6) 58. Rh7 Nf2+ 59. Ke2 Ne4 60. Kd3 Nf2+ 61.
Kc4 Kg5 62. Re7 (62. Rd7 {seems wilder.} Ne4 63. Re7 Nd6+ 64. Kd5 Bf4 65. Re1)
62... Bf4 63. b7 h4 {[#]} (63... Nxh3 $11 64. Re4 Bh2) 64. Re3 $3 $16 {[%cal
Re3f3][%mdl 512] Threatens to win with Rf3.} Bb8 65. Re8 Bf4 66. Kd5 (66. Rg8+
$16 Kf5 67. Rg1 (67. Rh8 Kg5 $18)) 66... Nxh3 $11 67. Ke4 Kg4 68. Kd3 Kf3 {
Strongly threatening ...Nf2+.} 69. Rf8 Nf2+ (69... Be5 {is interesting.} 70.
Kd2 Nf4 71. Rxf6 h3 72. Rf5 Bc7) 70. Kd4 Ng4 71. Rh8 (71. b8=Q {is more
complex.} Bxb8 72. Rxb8) 71... Ne3 72. Kd3 Nf5 73. Rf8 (73. b8=Q {keeps more
tension.} Bxb8 74. Rxb8) 73... h3 74. Rxf6 Kg4 {...h2 is the strong threat.}
75. Rg6+ $2 {[%mdl 8192] [#]} (75. Rc6 $11 Kg5 76. Rc4) 75... Kh5 $1 $19 {
[%cal Rh5g6]} 76. Rg1 Ng3 77. Rb1 {[#]} Bb8 $1 {White must now prevent ...h2.}
78. Kd4 h2 {Hoping for ...Ne2+.} 79. Kd5 Ne2 {( -> ...Nc3+)} 80. Rh1 Kg4 81.
Ke6 Kh3 (81... Nd4+ $17 82. Kd7 Bg3) 82. Kd7 $1 $11 Nd4 $2 {[%mdl 8192]} (82...
Ng1 $11) 83. Kc8 Nc6 84. Rc1 $1 Kg4 85. Rxc6 h1=Q {Mate.} 86. Rc4+ Kf5 87. Kxb8
{[%mdl 4096] Endgame KQ-KR} Ke6 88. Ka7 Qg1+ 89. Ka6 Qa1+ 90. Kb6 Qb2+ 91. Kc7
Qe5+ 92. Kc8 Qh8+ 93. Kc7 Qg7+ 94. Kb6 Qb2+ 95. Kc7 Qe5+ 96. Kc8 Qh8+ 97. Kc7
Qg7+ 98. Kb6 Qb2+ 99. Kc7 {[%mdl 32768] Weighted Error Value: White=0.11/
Black=0.16. An unexpected result.} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.52"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Ivic, Velimir"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "2484"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,120,14,0,0,-4,0,0,0,0,0,0,32,27,35,0,0,0,0,0,0,0,0,-52,-65,-63,-64,
-79,-103,-80,-35,-41,-15,-25,-6,-12,0,0,0,-18,0,0,3,8,22,23,22,-35,0,0,23,25,
20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,-56,-64,-76,-80,-254,
-252,-252,-242,-267,-247,-416,-226,-1735,-1759,-7864,-6898,-6596,0,0,0,-6282,
-6282,-5489,-1070,-6275,-6275,-1807,-920]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4.
Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. Qf3 a6 {B33: Sicilian:
Pelikan and Sveshnikov Variations.} 10. Qa3 Be7 11. Bg5 f6 {The position is
equal.} 12. Be3 O-O 13. O-O-O Bf5 14. Nc3 Nd7 {[#]} 15. Rg1 $146 ({Predecessor:
} 15. f3 b5 16. h4 Qb8 17. Ne4 {1-0 (17) Miettinen,K (2251)-Ivanov,H (2401)
LSS email 2008}) 15... Bg6 16. g4 $1 b5 17. h4 Rb8 18. Qxa6 b4 19. Na4 ({
Better is} 19. Nb5 $11) 19... Ra8 $15 {[%mdl 1024] Black has compensation.} 20.
Qb5 Qc7 {[%csl Gg6][%cal Rc7c2] [#]} 21. Rd2 Rfb8 22. Qc6 Qd8 {aiming for ...
e4.} 23. b3 $1 Be8 {Hoping for ...Nc5.} 24. Qc4 Nf8 25. Qe4 $1 Bxa4 26. bxa4
Rxa4 27. Bc4 Qa5 28. Kd1 b3 29. cxb3 Rxa2 {[#] Threatens to win with ...Ra1+.}
30. Ke2 Bd8 31. Qb1 (31. Rc1 $11) 31... Rxd2+ 32. Bxd2 Qc5 33. Be3 Qb4 34. Qa2
Bb6 35. Ra1 Bd4 36. Bxd4 exd4 37. Qd2 {And now Qxb4 would win.} Re8+ 38. Kd1
Qc5 39. Ra5 Qc7 40. Ra4 Ng6 41. h5 Ne5 42. Qxd4 Nxc4 43. Rxc4 $11 {[%mdl 4096]
Endgame KQR-KQR} Qa5 {( -> ...Qe1+)} 44. b4 Qa2 45. Rc2 Qb1+ $40 {[%mdl 128]
Black mounts an attack.} 46. Rc1 $1 {[%cal Rc1b1]} Qb3+ 47. Kd2 ({White should
try} 47. Rc2 $11) 47... h6 $1 $15 48. Rc2 Qf3 {...Re4! is the strong threat.}
49. Kc1 $2 (49. Rc3 $17 {might work better.} Qe2+ 50. Kc1) 49... Re4 $19 50.
Qc3 Qf4+ ({Weaker is} 50... Qxg4 51. Qc8+ Qxc8 52. Rxc8+ Kh7 53. b5 $14) 51.
Qd2 {Strongly threatening Qxf4.} Qxg4 52. b5 $2 (52. Qd1 Qg5+ 53. Qd2 Qxh5 54.
Kb2) 52... Rb4 (52... Qg1+ $142 53. Kb2 Qf1) 53. Qd3 $2 (53. Qe2 Qxe2 54. Rxe2
Rxb5 55. Rd2) 53... Qg1+ 54. Kd2 Qxf2+ 55. Kc3 Qc5+ 56. Kd2 Qf2+ 57. Kc3 $1
Qe1+ {Black is clearly winning.} 58. Rd2 Rb1 (58... Ra4 $142 59. Kb2 Qa1+ 60.
Kb3 Ra3+ 61. Kb4 Rxd3 62. Rxd3 Kf7) 59. Qf5 Qe3+ 60. Kc4 Rc1+ {Weighted Error
Value: White=0.49/Black=0.33} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.53"]
[White "Georgiev, Kiril"]
[Black "Vokhidov, Shamsiddin"]
[Result "1-0"]
[ECO "B47"]
[WhiteElo "2577"]
[BlackElo "2521"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,93,21,49,16,37,31,46,40,37,37,37,46,50,37,75,77,96,87,173,145,141,
102,102,78,120,135,199,196,222,-387,-385,-699,-695,-660,158,165,203,208,195,
181,210,186,233,214,221,229,216,234,506,497,493,487,600,595,610,610,565,513,
576,581,1831,1679,29968,29969,29967,29969,29969,29970,29969,29970,29970,29971,
29976,29977,29977,29978,29978,29979,29979,29980,29980,29981]} 1. e4 c5 2. Nf3
e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Qc7 6. g3 a6 7. Bg2 h5 8. h3 {B47: Sicilian:
Taimanov: 5 Nc3 Qc7 6 f4, 6 g3 and 6 Be2.} Nf6 9. O-O h4 10. g4 {White is
slightly better.} Nxd4 11. Qxd4 Bc5 12. Qd3 d6 13. Be3 Bd7 {[#]} 14. Bxc5 $146
({Predecessor:} 14. e5 dxe5 15. Bxc5 Qxc5 16. Bxb7 Rb8 17. Qxa6 O-O 18. a4 Qc7
19. Bg2 Rxb2 20. Qd3 {1-0 (72) Shevelev,A (2282)-Stasans,A (2095) Bucharest
2019}) 14... dxc5 15. Qe3 e5 (15... Bc6 $16 {keeps fighting.}) 16. Rad1 Be6 17.
Nd5 Bxd5 18. exd5 {Threatens to win with d6.} O-O-O 19. Rfe1 Rhe8 (19... Ne8
$16) 20. Qg5 $18 e4 21. Bxe4 $4 {[%mdl 8192]} Nxe4 $19 ({And not} 21... Rxe4
22. Rxe4 Nxe4 23. Qf5+ Rd7 24. Qxe4 $16) 22. Rxe4 (22. Qf5+ Qd7 23. Qf4) 22...
Rxe4 23. Qf5+ {[#]} Qd7 $2 (23... Re6 $1 $19 {[%mdl 512]} 24. Rf1 (24. b3 Qe5)
24... g6 $1 {[%mdl 512]}) 24. Qxe4 $16 {[%mdl 4096] Endgame KQR-KQR} Re8 25.
Qf3 Re5 26. Kg2 f5 27. c4 g6 28. b3 fxg4 29. hxg4 ({Much less strong is} 29.
Qxg4 $6 Qxg4+ 30. hxg4 Re2 $16) 29... Qd6 30. Rd3 Kd7 $2 (30... g5 {is a
better defense.} 31. Qf7 Qe7) 31. Re3 $18 Rxe3 32. Qxe3 {KQ-KQ} ({Less strong
is} 32. fxe3 Qe7 $16) 32... Qf6 33. g5 Qd4 {Now ...Qg4+ and Black clings on.}
34. Kh3 Kd8 35. Qf3 Ke8 36. a4 a5 37. Qf6 Qe4 38. Qe6+ {White mates.} Qxe6+ 39.
dxe6 {KP-KP} Ke7 40. Kxh4 Kxe6 41. Kg4 Ke5 42. f3 Kd4 43. Kf4 $1 {[%cal Rf4g4]}
b6 {[#]} 44. Kg3 $1 {[%cal Rg3f4]} Kd3 45. Kf2 Kd4 {[#]} 46. Ke2 $1 {[%cal
Re2d2]} Ke5 47. Ke3 {Weighted Error Value: White=0.30/Black=0.56} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.30"]
[Round "4.54"]
[White "Budisavljevic, Luka"]
[Black "Suleymanli, Aydin"]
[Result "1/2-1/2"]
[ECO "D04"]
[WhiteElo "2508"]
[BlackElo "2541"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,63,91,105,90,24,25,8,8,2,11,0,0,7,3,-12,0,-4,26,23,23,23,23,23,23,23,
23,23,23,23,36,23,23,11,28,28,28,28,32,32,36,31]} 1. d4 d5 2. Nf3 Nf6 3. e3 c6
4. c4 e6 5. Bd3 Nbd7 6. O-O Bd6 7. Nbd2 O-O 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4
Nf6 11. Bc2 c5 12. Qd3 cxd4 13. Bg5 ({Much weaker is} 13. Nxd4 $6 Bc5 $11)
13... Re8 {[#] D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran.} 14.
Qxd4 $146 (14. Nxd4 $16 {aiming for Rad1.} g6 15. Nb5) ({Predecessor:} 14. Nxd4
Bxh2+ 15. Kh1 Be5 16. Bxf6 Qxf6 17. Qxh7+ Kf8 18. Nf3 Bd7 19. Rae1 Bc7 20. c5
Ke7 21. Qd3 Rh8+ 22. Kg1 Qh6 {0-1 (22) Zhao,S (2183)-Zhang,L (2183) Shenzhen
2017}) 14... e5 $11 15. Qh4 {[#] Strongly threatening Bxh7+!} h6 {The position
is equal.} 16. Bxf6 Qxf6 17. Qxf6 gxf6 18. Rad1 Bc5 19. b3 a5 20. Nh4 Bd4 21.
a4 Ra6 22. Be4 Rd6 23. Rd3 Red8 {Threatening ...Bxf2+!} 24. Rfd1 Kf8 25. Kf1 b6
26. h3 Ke7 27. Ke2 Bc5 28. Rxd6 Bxd6 29. Nf5+ Bxf5 30. Bxf5 Bb4 31. Rxd8 Kxd8
32. g4 {Black took control after the opening.  Weighted Error Value: White=0.
10/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.1"]
[White "Firouzja, Alireza"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2770"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,61,9,0,0,0,2,0,0,5,6,0,14,18,25,16,12,23,25,0,0,0,5,8,5,6,8,13,17,0,
33,26,28,10,25,10,10,8,12,14,9,14,14,12,14,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4
cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e5 7. Nf3 Be7 $1 {7...Be7 scores better than
7...Qc7.} 8. Bg5 Be6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3
Ng4 and 6 Be3 e5.} 9. Bxf6 Bxf6 10. Nd5 Nd7 11. Bc4 Rc8 12. b3 Nb6 (12... Qa5+
{keeps more tension.} 13. b4 Qd8 14. Qd3 Nb6 15. Nxf6+ Qxf6 16. Bxe6 Qxe6 17.
O-O O-O) 13. Nxf6+ Qxf6 14. Bxe6 Qxe6 15. O-O O-O 16. c4 Nd7 {[%cal Bb6d7,
Bd7c5,Bc5d3,Bd3f4][%mdl 32] [#]} 17. Nd2 $146 ({Predecessor:} 17. a5 Nc5 18.
Re1 f5 19. exf5 Qxf5 20. Qd5+ Kh8 21. Re3 Qf6 22. Rf1 Rc6 23. Nd2 {1-0 (40)
Saltaev,M (2480)-Runte,M (2133) Dortmund 2021}) 17... Nc5 18. Re1 f5 19. exf5
Qxf5 20. f3 Nd3 21. Rf1 Rfd8 22. Ne4 Nf4 23. Ra2 d5 24. cxd5 Rxd5 {The
position is equal.} 25. Rd2 Rcd8 {[#] Strongly threatening ...Rxd2.} 26. Rxd5
Rxd5 27. Qc2 Qd7 28. Rc1 h6 29. Qc8+ Kh7 {[#] Hoping for ...Rd1+.} 30. Qxd7
Rxd7 31. Kf1 {Not much happened in this game.  Weighted Error Value: White=0.
03/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.2"]
[White "Tari, Aryan"]
[Black "Yu, Yangyi"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2646"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "138"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,138,41,38,38,34,36,26,36,38,43,37,43,44,53,35,36,33,34,14,12,18,20,
16,18,13,21,20,31,3,16,-10,-6,0,0,-10,0,-13,0,0,3,0,7,-4,0,0,0,-19,-18,-27,-3,
-11,-8,-12,-10,-12,0,-10,-3,-18,0,0,0,-11,0,0,0,0,0,0,0,-3,0,-16,-10,-39,-16,
-21,-24,-24,-14,-12,-11,-17,-2,-43,-43,-43,-42,-43,-8,-8,-8,-8,-8,-8,-8,-8,-8,
-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-244,-8,-8,-8,-8,-8,-8,-8,-8,
-8,-8,-8]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7.
O-O Be7 8. Nbd2 $1 {[%mdl 4] is currently scoring better than 8.c4.} Nd6 {
C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} 9. c3 Bf5 10. Bc2
O-O {White has an edge.} 11. Bb3 {[#]} Ne8 $146 ({Predecessor:} 11... Be6 12.
Re1 Bf6 13. Nf1 Ne7 14. Ng3 Ng6 15. Bc2 Re8 16. Nh5 Bg4 17. Rxe8+ Nxe8 {
1/2-1/2 (35) Semmler,R (2364)-Simeonov,L (2312) ICCF email 2018}) 12. Re1 Bd6
13. Nf1 Ne7 14. Nh4 {Black must now prevent Rxe7!} Bd7 15. Bc2 c6 16. Ng3 g6
17. Bh6 Ng7 18. Qd2 f6 19. Re3 Qc7 20. Rae1 Rae8 21. Nf3 Nc8 22. Rxe8 (22. Nf1
{keeps more tension.} Rxe3 23. Nxe3 Re8 24. Bd3 Qd8 25. Qc1) 22... Rxe8 23.
Rxe8+ Bxe8 24. Ne2 Bd7 25. h4 Bg4 26. Ne1 Nf5 27. Bxf5 Bxf5 28. Bf4 (28. b3 {
is more complex.} Ne7 29. g3 Bc8 30. Bf4 Nf5 31. Bxd6 Qxd6 32. Nf4) 28... Bxf4
29. Nxf4 Nd6 30. Ned3 Qe7 31. b3 h6 32. f3 g5 33. hxg5 hxg5 34. Ne2 Kg7 35. g4
Bg6 36. Kf2 a5 37. Ng3 Kf7 (37... Kf8 {looks sharper.} 38. Nc5 b6 39. Na4 b5
40. Nc5 Nb7) 38. a4 (38. Nc5 {is interesting.} Ke8 39. Na4 Kd8 40. c4 dxc4 41.
Qxa5+ Ke8 42. d5) 38... Ke8 (38... Qf8 {feels hotter.} 39. Qe2 Qh8 40. Ne1 Ne8
41. Qe3 Qf8) 39. Qe3 b6 40. Qxe7+ Kxe7 $11 {[%mdl 4096] Endgame KBN-KNN} 41.
Ke3 Nb7 42. Nf1 c5 43. Nd2 Kd6 44. Ne1 Nd8 45. f4 gxf4+ 46. Kxf4 Ne6+ 47. Ke3
Kc6 48. Nd3 Bh7 49. Nf4 Nxf4 {[%mdl 64] [#] Overworked Piece} 50. Kxf4 cxd4 51.
cxd4 $15 {KB-KN} b5 {And now ...bxa4 would win.} 52. g5 $1 {[%cal Rg5f6]} fxg5+
53. Kxg5 Bc2 54. Kf4 $1 bxa4 55. bxa4 Bxa4 56. Nb1 Bc2 57. Na3 Be4 {Threatens
to win with ...a4.} 58. Ke3 $1 Kb6 59. Kd2 a4 (59... Bf5 {with more
complications.} 60. Kc3 Kb7 61. Nc4 dxc4 62. Kxc4 Be6+) 60. Kc3 Ka5 {[#]
aiming for ...Bf5.} 61. Nc4+ dxc4 62. Kxc4 $11 {KB-KP} Bd5+ 63. Kc3 a3 64. Kc2
Ba2 $2 (64... Kb4 $19 65. Kb1 Bh1) 65. d5 $1 {The position is equal.} Kb5 66.
d6 {Strongly threatening d7.} Kc6 67. Kc3 Be6 68. Kc2 Kxd6 {( -> ...Ba2)} 69.
Kb1 Kc5 {Weighted Error Value: White=0.05/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.3"]
[White "Ponkratov, Pavel"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2659"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,44,0,10,0,0,0,7,0,0,0,7,-27,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4
Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c5 6. O-O Nc6 7. Ne5 Bd7 8. Na3 cxd4
9. Naxc4 Be7 {9...Bc5 is vanishing.} 10. Qb3 {E04: Open Catalan: 5 Nf3.} Qc7 $1
{The main line 10...Qc7 scores better than 10...Qc8.} 11. Bf4 Nh5 12. Nxc6 Nxf4
13. Nxe7 Nxg2 14. Rfd1 {[#]} Qc5 {[#]} 15. Rac1 $146 {[%cal Ba1c1,Bc1c5,Bc5a5]
[%mdl 32] The position is equal.} (15. Qxb7 Kxe7) ({Predecessor:} 15. Qxb7 Kxe7
16. Rac1 Rac8 17. Qxg2 Bc6 18. Qh3 Rhd8 19. Qh4+ g5 20. Qxh7 Qd5 21. f3 {
1/2-1/2 (32) Teske,H (2545)-L'Ami,E (2606) Germany 2010}) 15... Kxe7 16. Nd2
Qb6 17. Qa3+ Qd6 18. Rc5 $1 Qa6 {[#] aiming for ...Qxa3.} 19. Ra5+ Qd6 {
White must now prevent ...Qxa3.} 20. Rc5 Qa6 {...Qxa3 is the strong threat.}
21. Ra5+ Qd6 {Strongly threatening ...Qxa3.} 22. Rc5 $1 Qa6 {An uneventful
encounter.  Weighted Error Value: White=0.03/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.4"]
[White "Saric, Ivan"]
[Black "Shirov, Alexei"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2644"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,60,36,52,15,22,19,35,12,10,0,0,0,3,12,23,14,11,0,0,-25,-35,-21,-29,
-37,-45,-213,-236,-235,-232,-349,-372,-436,-411,-465,-465,-705,-699,-697,-697,
-687,-689,-919,-870,-29976,-1137]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5.
O-O b5 6. Bb3 Bc5 7. c3 d6 8. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Rb8 9. d4 Bb6
10. a5 {C78: Ruy Lopez: Archangelsk and Möller Defences.} Ba7 ({Don't blunder} 
10... Bxa5 $2 11. dxe5 (11. d5 Ne7 $18) 11... dxe5 12. Qxd8+ Kxd8 13. Bd5 $18 (
13. Bxf7 Bb6 $16)) 11. h3 Bb7 12. Be3 {d5 is the strong threat.White is
slightly better.} Nxe4 13. Re1 exd4 14. cxd4 {Hoping for d5.} d5 15. Nbd2 {
Black must now prevent Nxe4.} Ne7 16. Nxe4 dxe4 {[#]} 17. Ne5 $146 ({
Predecessor:} 17. Ng5 Bd5 18. Bxd5 Qxd5 19. Rc1 Qd7 20. Qh5 g6 21. Qh4 f5 22.
Bf4 Nd5 23. Be5 {1-0 (29) Ter Sahakyan,S (2640)-Sargsyan,S (2596) Yerevan 2021}
) 17... O-O 18. Qg4 Bd5 ({Don't play} 18... Bxd4 19. Bxd4 Qxd4 20. Nd7 $14) 19.
Bxd5 Qxd5 20. Rac1 c5 {[%mdl 64] Deflection} ({Much worse is} 20... Bxd4 $6 21.
Bxd4 Qxd4 22. Nd7 $16) 21. dxc5 {Loses the game.} (21. Qd7 $15 cxd4 22. Qxe7
dxe3 23. fxe3) 21... Qxe5 $19 22. Bf4 Qxb2 {And now ...Rbd8 would win.} 23. Qd7
(23. Bxb8 $142 Bxb8 24. Qxe4) 23... Ng6 24. Bd6 {[#]} e3 $1 25. Rf1 (25. Qf5
exf2+) 25... exf2+ 26. Kh1 {[#]} (26. Kh2 $142 Ra8 27. Bxf8 Nxf8 28. Qb7 Qe5+
29. g3) 26... Rbe8 $1 {Threatens to win with ...Qxc1!} 27. Rcd1 Bb8 28. Bxf8
Kxf8 29. g3 Bxg3 30. c6 Qc2 {Weighted Error Value: White=0.90/Black=0.03} (
30... Qc3 $142 31. Qd3 Qxc6+ 32. Qd5 Qxd5+ 33. Rxd5 Nf4 {[%mdl 64] Double
Attack} 34. Rd7 Re1 35. Rd8+ Ke7 36. Rd1 Kf8 37. Rd8+ Ke7 38. Rd1 Bh4 39.
Rdxe1+ fxe1=Q 40. Rxe1+ Bxe1 41. Kh2 b4 42. h4 Bxh4 43. Kh1 b3 44. Kg1 Bg3 45.
Kf1 b2 46. Kg1 b1=Q#) 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.5"]
[White "Hovhannisyan, Robert"]
[Black "Najer, Evgeniy"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "2622"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,96,12,14,54,53,18,0,0,0,0,0,0,0,0,0,25,0,10,0,0,0,0,0,0,-8,0,0,0,0,
42,0,0,0,0,0,0,-38,-37,-37,-43,-45,-39,-131,-104,-104,-104,-106,-103,-102,-101,
-101,-101,-110,-112,-112,-108,-162,-162,-177,-177,-177,-165,-185,-179,-241,
-220,-5281,-2308,-1854,-1727,-12830,-12831,-12830,-12830,-12834,-5477,-12836,
-12836,-12837,-12837,-12839,-12839,-12842,-12843,-12844,-12843]} 1. e4 c5 2.
Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 {7.Qe2 is setting a
new trend.} Qb6 {B94: Sicilian Najdorf: 6 Bg5 Nbd7.} (7... e6 {keeps more
tension.} 8. O-O Qa5 9. Qd2 h6 10. Bh4 b5) 8. Bb3 $1 e6 9. Bxf6 Nxf6 {The
position is equal.} 10. Qd2 {10.f4 is vanishing.} Nd7 11. O-O-O Nc5 12. f4 Bd7
13. f5 O-O-O 14. Kb1 {[#]} Kb8 $146 ({Predecessor:} 14... g6 15. fxe6 fxe6 16.
Qe3 Qa5 17. Qg3 Qc7 18. Rhf1 Bg7 19. Rf7 Be5 20. Qe3 Qa5 21. Nce2 Rdf8 22.
Rxf8+ Rxf8 23. Nf3 Bg7 24. Rxd6 {1/2-1/2 (24) Fischer,W (2437)-Williamson,H 
(2503) ICCF email 2019}) 15. Qe3 Nxb3 16. cxb3 Be7 17. Qg3 Bf6 18. Nf3 Bc8 19.
fxe6 Bxe6 20. Rd3 Rd7 21. Na4 Qb4 22. a3 Qa5 ({Much weaker is} 22... Qxe4 $6
23. Nc5 $16) 23. Rxd6 Rc7 24. Rd3 {[#] Hoping for Rc1.} Bxb3 $1 {[%mdl 64]
Remove Defender} 25. Rxb3 Qxa4 {[%mdl 64] Double Attack} 26. Nd2 Qd4 27. Qd3 {
Black keeps a firm grip on the game.} (27. Qe3 $1 $15) 27... Rd8 $36 {[%mdl
2048] Black has strong initiative.} 28. Qxd4 Rxd4 29. e5 {[%mdl 64] Decoy} Bxe5
30. Nf3 Rd5 31. Nxe5 Rxe5 $17 {[%mdl 4096] Endgame KRR-KRR} 32. h4 Rce7 33.
Rhh3 Re4 34. Rhg3 (34. h5 $17 {is a better defense.}) 34... f6 $19 ({Much less
strong is} 34... Rxh4 35. Rxg7 h5 36. g3 $15) 35. h5 Rh4 $1 36. Rh3 Rxh3 37.
Rxh3 {[#] KR-KR} Re5 $1 38. Rg3 {[#]} (38. Kc1 $142) 38... Rg5 $1 {[%cal Rg5g3]
} ({Less strong is} 38... Rxh5 39. Rxg7 Ka7 40. Rf7 $17) 39. Rxg5 (39. Rh3)
39... fxg5 {KP-KP. Black is clearly winning.} 40. Kc2 Kc7 41. Kd3 Kd6 42. Kd4
h6 43. a4 Ke6 44. a5 g6 45. hxg6 Kf6 46. b4 h5 47. b5 axb5 48. Kc5 h4 {
Weighted Error Value: White=0.58/Black=0.04} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.6"]
[White "Petrosyan, Manuel"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "D77"]
[WhiteElo "2605"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,76,21,21,21,21,14,14,17,14,14,23,14,18,16,14,8,9,22,22,22,7,30,36,27,
4,18,5,12,5,10,0,8,0,0,0,0,-3,-3,0,0,-4,-4,0,0,-4,0,-12,0,0,0,0,0,-46,0,0,0,0,
0,0,0,0,0,0,0]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c4 dxc4
7. Na3 c5 8. dxc5 c3 {D77: Fianchetto Grünfeld: 6 0-0: Replies other than 6...
c6.} 9. Nb5 Na6 {[%cal Bb8a6,Ba6c5,Bc5e4][%mdl 32]} 10. Nxc3 Nxc5 11. Be3 {
[#] Black must now prevent Qxd8.} Nfe4 12. Nxe4 Nxe4 13. Bd4 Bxd4 {[#]} 14.
Nxd4 $146 ({Predecessor:} 14. Qxd4 Qxd4 15. Nxd4 Nd6 16. f4 Rd8 17. Rac1 Bg4
18. Kf2 Rac8 19. b3 Kg7 20. Rfd1 {1/2-1/2 (39) Abasov,N (2638)-Nihal,S (2652)
Toledo 2021}) 14... Nd6 15. Qb3 Qa5 16. Qe3 Re8 17. Rfc1 e5 18. Nb3 Qb6 19.
Qxb6 axb6 20. Bd5 Kf8 21. a3 Bf5 22. f3 Rac8 23. Kf2 Ke7 24. Nd2 Red8 25. e4
Be6 26. Bxe6 Kxe6 27. Ke3 b5 28. Rxc8 Rxc8 $11 {[%mdl 4096] Endgame KRN-KRN}
29. Kd3 f5 30. Re1 f4 (30... h5 {with more complications.} 31. h4 Rd8 32. Kc3
Ra8 33. Kc2 Ra6) 31. g4 Nc4 32. Nxc4 bxc4+ {KR-KR} 33. Ke2 Rd8 34. Rc1 {
The position is equal.} Rd4 35. b3 Rd3 36. bxc4 Rxa3 37. Rb1 Ra2+ 38. Kf1 Rxh2
{Weighted Error Value: White=0.04/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.7"]
[White "Caruana, Fabiano"]
[Black "Howell, David W L"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2800"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,68,16,0,0,0,0,0,0,0,0,0,0,0,0,0,12,0,0,0,0,0,0,0,0,0,13,10,85,70,70,
87,101,71,92,73,76,87,102,109,102,75,144,150,445,438,409,389,1556,1359,2232,
1893,12821,12818,12816,12822,12375,6407,2294]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6
4. d3 Bc5 5. c3 O-O 6. O-O d6 7. Bg5 h6 {C65: Ruy Lopez: Berlin Defence (3...
Nf6), unusual lines and 4 0-0 Bc5.} 8. Bh4 g5 9. Bg3 Nh5 {The position is
equal.} 10. Nbd2 Qf6 {10...Qf6 was played by the boomers.} 11. Bxc6 $5 {
[%mdl 4] An interesting side line.} bxc6 12. d4 exd4 13. e5 Qg7 14. cxd4 Bb6 {
[#]} 15. a4 $146 {And now a5 would win.} ({Predecessor:} 15. Qa4 f5 16. exf6
Nxf6 17. Qxc6 Rb8 18. Qc2 Bb7 19. Rad1 Bd5 20. Rfe1 Rbe8 21. Qd3 {1/2-1/2 (68)
Ter Sahakyan,S (2567)-Schreiner,P (2444) Athens 2012}) 15... a5 16. Nc4 Be6 17.
Rc1 Nxg3 18. hxg3 Bxc4 19. Rxc4 Rad8 (19... c5 $11 {remains equal.}) 20. Re1
$16 ({Much worse is} 20. Rxc6 dxe5 21. Qd3 Rfe8 $15) 20... Rfe8 {Black wants
to play ...dxe5.} 21. exd6 ({Much weaker is} 21. Rxc6 dxe5 22. Nd2 Bxd4 $11)
21... Rxe1+ 22. Qxe1 {dxc7 is the strong threat.} Rxd6 {[#]} 23. Rxc6 $1 {
[%mdl 64] Decoy} Rxc6 (23... Qf8 24. Rxd6) 24. Qe8+ {[%mdl 64] Double Attack}
Kh7 25. Qxc6 Qg6 26. Qd7 Kg7 (26... Qb1+ $142 27. Kh2 Qg6) 27. Ne5 Qe6 {
[#] Loses the game.} (27... Qf6 $16 28. Nc6 Qg6) 28. Qxe6 $1 $18 fxe6 {[%mdl
4096] Endgame KB-KN} 29. Nc4 Kf6 $2 (29... Bxd4 30. Nxa5 Bxb2) 30. Nxb6 {
White is clearly winning.} cxb6 31. g4 e5 32. dxe5+ Kxe5 33. g3 Kd4 34. f4 Kd5
{Weighted Error Value: White=0.02/Black=0.27} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.8"]
[White "Oparin, Grigoriy"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2654"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,60,0,0,0,0,5,0,0,0,49,0,3,0,11,16,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5
Nd7 6. Nc3 Nxc3 7. bxc3 Bd6 {The modern move.} 8. O-O O-O 9. Re1 c5 {C43:
Petroff Defence: 3 d4.} 10. Nxd7 Qxd7 11. dxc5 Bxc5 12. Qh5 {[%csl Gd3][%cal
Rh5h7] [#]} g6 13. Qh4 Qc6 {The position is equal.} 14. Bh6 {Hoping for Bb5!}
Re8 $1 {[#]} 15. Qf6 $1 {[%csl Gh6][%cal Rf6g7]} Bf8 {Strongly threatening ...
Rxe1+.} 16. Qxc6 Rxe1+ 17. Rxe1 {Intending Re8! and mate.} bxc6 18. Re8 {
[%csl Gh6][%cal Re8f8]} Bb7 19. Rxa8 Bxa8 20. Bxf8 Kxf8 $11 {[%mdl 4096]
Endgame KB-KB} 21. c4 c5 22. cxd5 Bxd5 23. c4 Be6 24. f4 {[#]} f5 $146 ({
Predecessor:} 24... Ke7 25. Kf2 h5 26. g3 f5 27. Ke3 Kd6 28. h4 Kc6 29. Kd2 Kd6
30. Kc3 Bd7 {1/2-1/2 (30) Nisipeanu,L (2674)-Abasov,N (2629) Austria 2019}) 25.
Kf2 Ke7 26. Ke3 Kd6 27. g3 Bd7 28. Kd2 Bc6 29. Kc3 Kc7 30. h4 h5 {An
uneventful encounter.  Weighted Error Value: White=0.03/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.9"]
[White "Vitiugov, Nikita"]
[Black "Sarana, Alexey"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2727"]
[BlackElo "2649"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,46,10,6,3,29,28,25,25,25,25,25,18,19,17,18,17,26,18,51,43,36,37,43,
19,21,0,44,0,22,0,38]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6.
Be2 e5 7. Nb3 Be7 8. O-O O-O 9. Be3 Be6 10. Re1 {B92: Sicilian Najdorf: 6 Be2.}
h6 {[#]} 11. a4 $146 ({Predecessor:} 11. Qd3 Nc6 12. a3 Rc8 13. Nd5 Nd7 14.
Rad1 Bg5 15. Bxg5 Qxg5 16. c3 Qd8 17. Nd2 Nc5 {1-0 (49) Malek,S (2163)
-Palladino,M (2242) ICCF email 2018}) 11... Nc6 12. Bf3 {White has an edge.}
Na5 13. Nxa5 Qxa5 14. Bd2 Qc5 15. a5 Rac8 16. Be3 Qb4 17. Qc1 {[#] Hoping for
Ra4.} Bd7 18. Rd1 Bc6 19. h3 Rfe8 ({Not} 19... Nxe4 $2 20. Bxe4 Bxe4 21. Ra4
$18) ({But not} 19... Bxe4 $2 20. Ra4 $18) 20. Bd2 {Black must now prevent Nd5.
} Qc5 21. Be3 Qb4 22. Bd2 Qc5 23. Be3 Qb4 {Weighted Error Value: White=0.08/
Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.10"]
[White "Donchenko, Alexander"]
[Black "Esipenko, Andrey"]
[Result "1/2-1/2"]
[ECO "E20"]
[WhiteElo "2648"]
[BlackElo "2720"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,56,7,22,16,14,10,70,70,124,0,0,0,0,0,0,0,42,39,42,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d6 5.
e4 c5 6. d5 O-O 7. Nge2 b5 8. Nf4 {E20: Nimzo-Indian: 4 g3 and 4 f3.} ({
Of course not} 8. cxb5 exd5 9. exd5 Nbd7 $15) 8... exd5 9. Nfxd5 {[#]} Bb7 $146
(9... Nxd5 $11 10. Qxd5 Qb6) ({Predecessor:} 9... Nxd5 10. Qxd5 Qb6 11. Bf4 {
1/2-1/2 (11) Berkes,F (2661)-Donchenko,A (2657) Skalica 2020}) 10. Nxb4 $14 {
White is slightly better.} ({Not} 10. cxb5 Nxd5 11. exd5 Re8+ 12. Be2 Qe7 $17)
10... cxb4 11. Nd5 (11. Nxb5 $16 Nxe4 12. fxe4 Qh4+ 13. Kd2) 11... Nxd5 $11 12.
cxd5 f5 13. Bd3 fxe4 14. Bxe4 Nd7 15. O-O Nc5 16. Be3 (16. Bc2 {is more
complex.} a5 17. Be3 Re8 18. Re1 Qf6 19. Qd2) 16... Nxe4 {The position is
equal.} 17. fxe4 Rxf1+ $1 18. Qxf1 Qe7 19. Qxb5 {Black must now prevent Re1.}
Qxe4 {[%mdl 64] [#] Double Attack} 20. Qxb7 {[%mdl 64] Double Attack} Qxe3+ {
[%mdl 4096] Endgame KQR-KQR} 21. Kh1 Rf8 22. Qxb4 Qd3 {( -> ...Rf1+)} 23. h3
Qxd5 24. Qa4 Rf2 {[%csl Gf2][%cal Rd5g2] [#]} 25. Qe8+ Rf8 26. Qa4 Rf2 {
[%csl Gf2][%cal Rd5g2]} 27. Qe8+ Rf8 28. Qa4 Rf2 {[%csl Gf2][%cal Rd5g2]
Weighted Error Value: White=0.14/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.11"]
[White "Harikrishna, Pentala"]
[Black "Swiercz, Dariusz"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2719"]
[BlackElo "2647"]
[Annotator "TA"]
[PlyCount "136"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,135,3,12,1,9,0,0,-17,0,0,-9,-17,-15,-14,0,-30,-25,-20,-11,-64,-63,
-135,-139,-146,-134,-162,-131,-220,-156,-161,-131,-153,-157,-149,-122,-112,
-114,-154,-115,-181,-166,-177,-114,-118,-110,-114,-107,-124,-120,-112,-105,
-127,-122,-122,-127,-180,-111,-170,-114,-156,-171,-233,-230,-214,-214,-225,
-213,-225,-225,-239,-233,-231,-245,-277,-275,-264,-256,-237,-81,-199,-164,-950,
-964,-943,-811,-702,0,0,0,-783,-699,-654,-534,-1270,-1347,-1264,-1234,-1020,
-24,-24,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4
cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 e5 7. Nde2 Be7 8. O-O O-O 9. Ng3 {B90:
Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Be6 10. f4
exf4 11. Bxf4 Nbd7 12. Kh1 Ne5 13. Nf5 {[#]} Bxf5 $146 ({Predecessor:} 13... h6
14. Qd2 Bxf5 15. exf5 Re8 16. Rae1 Qc7 17. Re3 Rad8 18. Rfe1 Nc4 19. Bxc4 Qxc4
{0-1 (32) Borawski,J (2063)-Wadelek,K (1892) Warsaw 2015}) 14. exf5 Re8 15. Be2
Rc8 16. Bg5 h6 17. Be3 (17. Bxf6 $11 Bxf6 18. Nd5) 17... d5 $15 18. Bf3 (18. a3
$15) 18... Bc5 $17 19. Bf4 {[%cal Rf3d5]} Nxf3 20. Qxf3 d4 21. Rad1 (21. Ne2
$17) 21... Qd7 22. Ne2 Qxf5 {White must now prevent ...g5.} 23. Ng3 Qd5 (23...
Qxc2 24. Bxh6 Qg6 25. Bxg7 $15) 24. Qd3 Ne4 (24... Qxa2 $6 25. Bxh6 Rc6 26. Nf5
$15) 25. c3 Rcd8 26. b4 Bf8 27. c4 (27. Nxe4 $17 {might work better.} Rxe4 28.
a3) 27... Nxg3+ $19 28. Bxg3 Qe4 (28... Qd7 $1 $19 29. c5 Re3) 29. a3 Qxd3 30.
Rxd3 g6 31. Kg1 Re4 32. Rfd1 f5 33. Bf2 {[%cal Rd3d4]} Bg7 34. a4 Kf7 35. b5 (
35. g3 $17 {was worth a try.}) 35... Bf6 (35... a5 $1 $19 36. c5 Ke6) 36. Kf1 {
[#]} (36. bxa6 $17 bxa6 37. c5) 36... h5 (36... a5 $1 $19 37. c5 Ke6) 37. Rc1
Rc8 38. c5 (38. bxa6 {was called for.} bxa6 39. Rb3) 38... axb5 39. axb5 Ke6
40. c6 bxc6 41. bxc6 {[#]} Be5 $1 42. Rb3 Bxh2 43. g3 {intending Kg2.} f4 44.
c7 Kd7 45. Rd1 Rxc7 ({Weaker is} 45... Kxc7 46. Bxd4 Kd7 47. Bg1+ Ke6 48. Rb6+
(48. Bxh2 Rc2 $11) 48... Kf5 49. Rd5+ (49. Bxh2 Rc2 $11) 49... Kg4 50. Rxg6+ (
50. Bxh2 Rc1+ 51. Kf2 Rc2+ 52. Kf1 Rxh2 $17) 50... Kf3 51. Rd3+ Re3 52. Bxe3
$11) 46. Bxd4 {Threatens to win with Be5+.} Ke6 ({Inferior is} 46... fxg3 47.
Be5+ Ke6 48. Bxc7 $11) (46... Ke7 $19 47. Bf2 fxg3 48. Bxg3 Bxg3 49. Rxg3 Rc6)
47. Rb6+ (47. Kg2 $17 {only move.}) 47... Kf5 48. g4+ (48. Kg2) 48... hxg4 49.
Rb5+ Ke6 50. Rb6+ Kf5 51. Rb5+ Ke6 52. Rb6+ Kf7 53. Rf6+ Ke8 54. Rxg6 {Hoping
for Rg8+.} f3 55. Bf2 Kf7 56. Rg5 Be5 $2 ({Black should play} 56... Ke6 $19 {
Strongly threatening ...Rc2.} 57. Rb1 Rc2) 57. Re1 $11 Bf6 (57... Rxe1+ {
is interesting.} 58. Bxe1 Bd6 59. Rxg4 Rc1 60. Kf2 Bc5+) 58. Rxe4 {The
position is equal.} Bxg5 59. Rxg4 {[%mdl 4096] Endgame KRB-KRB} Bd2 60. Be1 Rc1
61. Re4 $1 Kg6 (61... Kf6 {feels hotter.} 62. Kf2 Bxe1+ 63. Rxe1 Rxe1 64. Kxe1
Kg5) 62. Kf2 Bxe1+ 63. Rxe1 Rxe1 64. Kxe1 {KP-K} Kf5 65. Kf2 Kf4 (65... Ke4 $5)
66. Kf1 Ke3 {( -> ...f2)} 67. Ke1 f2+ 68. Kf1 Kf3 {Black had all chances to
win.  Weighted Error Value: White=0.40/Black=0.22} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.12"]
[White "Abdusattorov, Nodirbek"]
[Black "Dubov, Daniil"]
[Result "1/2-1/2"]
[ECO "A25"]
[WhiteElo "2646"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "207"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,207,11,0,27,21,11,17,23,18,39,30,77,72,68,29,80,84,95,91,64,66,79,76,
79,70,87,14,13,9,9,15,7,0,21,16,20,0,64,63,69,65,62,7,7,7,5,6,6,4,83,83,83,86,
83,72,73,75,73,87,91,66,91,61,97,95,95,98,102,98,93,93,104,45,81,89,75,77,75,
81,177,177,177,177,267,267,259,260,260,260,260,260,253,245,238,231,224,177,177,
89,436,436,436,224,321,209,150,75,209,75,78,75,78,78,81,81,80,75,80,80,80,80,
80,80,78,78,78,78,78,78,78,78,80,78,78,75,75,75,75,75,75,75,75,75,436,436,436,
436,436,75,436,436,461,73,75,75,73,73,75,75,436,436,461,75,75,75,436,75,75,75,
75,75,75,66,75,75,73,67,75,67,51,44,73,73,461,436,461,0,0,0,0,0,0,0]} 1. c4 e5
2. g3 Nc6 3. Nc3 g6 4. Rb1 a5 5. a3 Bg7 6. b4 axb4 7. axb4 Nf6 8. Bg2 O-O 9. d3
Ne7 {A25: English Opening vs King's Indian with ...Nc6 but without early d3.}
10. Qb3 c6 11. Nf3 d5 12. Nxe5 {[#]} Nf5 $146 ({Predecessor:} 12... Be6 13. O-O
Ne8 14. Nf3 dxc4 15. dxc4 Nd6 16. Qc2 Bxc4 17. Bf4 Bxc3 18. Qxc3 Nd5 {1/2-1/2 
(37) Pigusov,E (2500)-Balashov,Y (2530) Irkutsk 1986}) 13. O-O Re8 14. Nf3 Be6
15. Ng5 dxc4 (15... Bd7 $11) 16. dxc4 $16 Bc8 17. e3 Ng4 18. Nce4 h6 19. Nh3 g5
20. Bb2 Qe7 21. Rfe1 (21. Rbd1 $16) 21... Bxb2 $11 22. Qxb2 Nd6 $1 {[%cal
Rd6e4]} 23. Nxd6 Qxd6 24. Rbd1 Qf6 25. Qxf6 Nxf6 26. f4 gxf4 ({Better is} 26...
Ra4 $11) 27. Nxf4 $14 Ra4 28. Rd6 $36 {[%mdl 2048] White fights for an
advantage.} Kg7 29. Rf1 (29. b5 $14 Rxc4 30. bxc6 bxc6 31. Rxc6 (31. Bxc6 Re5
$14) 31... Rxc6 32. Bxc6) 29... Be6 $11 30. Nxe6+ Rxe6 31. Rd4 Rxb4 32. Rdf4 $1
b5 (32... c5 $11 {keeps the balance.}) 33. Bh3 $16 Rd6 34. e4 $1 Rxc4 35. e5 {
[%csl LRd6,LRf6][%mdl 64] Double Attack} Rxf4 36. gxf4 Rd3 37. exf6+ Kxf6 {
[%mdl 4096] Endgame KRB-KR} 38. Kg2 c5 39. Ra1 c4 40. Ra6+ Kg7 41. Bf5 Rd2+ 42.
Kg3 b4 43. Rc6 c3 44. h4 ({White should try} 44. h3 $16) 44... Rd1 45. Rb6 $1 {
[%cal Rb6b4]} Rc1 46. Kg4 $1 ({But not} 46. Rxb4 c2 $11) 46... Rg1+ 47. Kf3 Rc1
(47... Rf1+ $16 48. Ke3 Re1+ 49. Kd3 Rd1+ 50. Ke2 Rd2+ 51. Ke3 Rb2) 48. Ke2 $18
({Stronger than} 48. Rxb4 c2 $11) 48... c2 49. Kd2 Rd1+ (49... Rf1 $142 50.
Bxc2 (50. Kxc2 Rxf4 51. Rb5 Kf6 $11) 50... Rf2+ 51. Kc1 Rxf4) 50. Kxc2 Rd4 51.
h5 $1 Rxf4 52. Bd3 Rh4 53. Be2 Rd4 54. Rc6 Re4 55. Kd2 Re5 56. Rc7 Kf6 57. Rb7
({White should play} 57. Rc4 $1 $18) 57... Rg5 $2 {[%mdl 8192]} (57... Rd5+ $16
58. Ke3 Re5+ 59. Kf2 Re4) 58. Rxb4 Kg7 59. Rb7 (59. Rg4 $142) 59... Kf6 (59...
Rd5+ $142 60. Ke3 Kf6) 60. Ke3 Re5+ 61. Kf2 (61. Kd3 $142 $1) 61... Kg7 (61...
Rf5+ $16 62. Kg3 Rc5) 62. Bg4 (62. Rb5 $1 $18 {[%cal Rb5e5] is the precise
move to win.} Rxb5 63. Bxb5) 62... Rg5 63. Kg3 Re5 64. Kf4 Rg5 65. Rd7 Kf6 66.
Kg3 Re5 67. Bf3 Rg5+ 68. Kh4 Rf5 69. Bd5 Kg7 70. Be6 Rf6 71. Bb3 {Threatens to
win with Kg4.} Rf4+ 72. Kg3 Rf5 73. Kg4 Rg5+ 74. Kh4 Rf5 75. Bc2 (75. Rc7 {
feels hotter.} Kf8 76. Bc4 Rf4+ 77. Kh3 Rf5 78. Kg3) 75... Rf4+ 76. Kg3 Rf6 77.
Kg4 Rf1 78. Be4 Kf6 79. Bg2 Rf2 $2 {[%mdl 8192]} (79... Rg1 $16) 80. Bf3 Rf1
81. Kg3 $1 Rg1+ 82. Bg2 $2 (82. Kf2 $18 Rg5 83. Rd6+ Kg7 84. Rb6) 82... Re1 $2
{[%mdl 8192]} (82... Ke6 $16 83. Rb7 Rd1) 83. Bd5 Re7 84. Rd6+ $2 (84. Rxe7 $18
{has better winning chances. Intending Re2 and mate.} Kxe7 85. Kh4) 84... Kg5
85. Rd8 Re3+ 86. Bf3 Kf6 87. Kf4 Re5 $2 {[%mdl 8192] [#]} (87... Re7 $16 {
is more resistant.} 88. Rh8 Kg7) 88. Rd6+ $1 Re6 89. Rd5 $2 (89. Rc6 $18) 89...
Re1 90. Ra5 Rg1 $2 {[%mdl 8192] [#]} (90... Rf1 $16 {is tougher.} 91. Rf5+ Ke6)
91. Ra6+ $2 (91. Rf5+ $1 $18 {and the rest is easy.} Kg7 92. Ra5) 91... Kg7 $16
92. Ra7 Rg5 93. Rd7 Rg1 94. Be2 Rg2 95. Bg4 {And now Be6 would win.} Rf2+ 96.
Bf3 {Kg4 is the strong threat.} Rb2 97. Ke5 Rf2 98. Rd3 {aiming for Rc3.} Rf1
99. Bd5 {Black must now prevent Rg3+.} Rf2 $2 {[%mdl 8192]} (99... Re1+ $16 {
is a better chance.} 100. Be4 Rg1) 100. Kd6 Kf8 101. Kd7 $2 (101. Rf3 $18 Rxf3
102. Bxf3) 101... Rf5 $11 {The position is equal.} 102. Bb3 {Hoping for Rh3.}
Rf2 103. Rd6 {Strongly threatening Bd1.} Kg7 104. Ke7 {Weighted Error Value:
White=0.16/Black=0.29} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.13"]
[White "Alekseenko, Kirill"]
[Black "Deac, Bogdan-Daniel"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2710"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,76,21,36,25,41,37,41,29,40,47,40,7,13,7,18,0,14,0,0,0,0,0,0,14,0,10,
9,8,8,0,0,0,15,0,12,-22,-29,-73,-65,-129,-136,-132,-125,-188,-186,-180,-194,
-193,-191,-187,-172,-198,-197,-177,-193,-180,-183,-223,-224,-800,-800,-799,
-760,-671,-654]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Bg5 h6 7.
Bh4 a6 8. Nbd2 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.}
Qe7 9. O-O Ba7 10. b4 {[%cal Bb2b4,Bb4b5][%mdl 32] White is slightly better.}
Be6 $5 {[%mdl 4] Leaves trodden paths.} 11. a4 O-O 12. Kh1 Bxc4 13. Nxc4 Qe6 {
[#]} 14. b5 $146 (14. Re1 {is interesting.} g5 15. Bg3 Kg7 16. Rb1 Nd7 17. Na5)
({Predecessor:} 14. Ne3 Bxe3 15. fxe3 Nh7 16. Bg3 b5 17. Qc2 Rfd8 18. Rfd1 Nf8
19. d4 exd4 20. exd4 {1-0 (30) Gabrielian,A (2502)-Ortega,M (2447) Lisbon 2018}
) 14... Ne7 15. Bxf6 Qxf6 16. Rb1 Qe6 17. b6 cxb6 18. Nxb6 Rad8 19. Qb3 Qxb3
20. Rxb3 f5 21. exf5 Rxf5 22. Nc4 Nd5 23. Rxb7 Rf7 24. Rxf7 Kxf7 25. Rb1 {
Rb7+ is the strong threat.} Ke6 $1 26. Rb3 {[#]} (26. Rb7 $15 Rd7 27. Rb3)
26... Rb8 $1 $36 {[%cal Rb8b3][%mdl 2048] Black is in control.} ({Don't do} 
26... Bxf2 27. g3 $15) 27. Rxb8 Bxb8 {[%mdl 4096] Endgame KBN-KNN} 28. Kg1 (28.
Ne1 $17 {might work better.}) 28... Nxc3 $19 29. Nb2 d5 {aiming for ...Bd6.}
30. Ne1 Kd6 31. Nc2 Kc5 32. Kf1 Kb6 33. Ke1 {[#]} Ka5 $1 34. Kd2 Nxa4 35. Nxa4
Kxa4 36. Ne3 $2 (36. Kc3) 36... Kb3 {Black is clearly winning.} 37. Nxd5 a5 {
[%cal Ba6a5,Ba5a4][%mdl 32]} 38. Nb6 a4 {Weighted Error Value: White=0.37/
Black=0.02} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.14"]
[White "Sasikiran, Krishnan"]
[Black "Fedoseev, Vladimir"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "2640"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,105,0,5,0,0,0,0,0,20,19,15,0,0,0,0,0,0,0,12,-8,-18,0,46,29,129,147,
149,100,177,184,177,193,185,159,257,271,266,244,273,258,265,263,301,297,220,
172,170,141,235,229,234,234,246,258,266,251,288,262,250,251,288,218,248,184,
228,212,245,204,214,190,206,208,237,172,302,295,393,381,377,383,373,346,449,
454,618,632,652,638,736,742,719,566,1113,1120,1012,948]} 1. e4 e6 2. d4 d5 3.
Nc3 Bb4 4. Nge2 Ne7 5. a3 Ba5 6. b4 Bb6 7. Bb2 {C15: French: 3 Nc3 Bb4:
Unusual White 4th moves.} O-O 8. g3 a5 9. b5 {[#] The position is equal.} f5
$146 ({Predecessor:} 9... c5 10. dxc5 Bxc5 11. exd5 Qb6 12. Ne4 Qxb5 13. Nxc5
Qxb2 14. dxe6 Nbc6 15. Bg2 Bxe6 16. Nxe6 fxe6 {0-1 (29) Grzegorski,M (1752)
-Gdanski,J (2493) Bydgoszcz 2021}) 10. e5 a4 11. Nf4 c5 12. Bg2 cxd4 13. Nce2
Ra5 14. Qd3 Qe8 15. Nxd4 Bxd4 16. Bxd4 Bd7 17. Qc3 b6 {[#]} (17... Rxb5 $11 {
remains equal.} 18. Bf1 Qf7) 18. Rb1 $1 $16 Ng6 19. Nxg6 (19. Bxb6 $6 Rxb5 20.
O-O Nxf4 $11) 19... Qxg6 (19... hxg6 $16 {was necessary.} 20. Bf1 (20. Bxb6
Rxb5 21. Kd2 Na6 $14) 20... Bxb5) 20. Qd3 $18 ({Don't do} 20. Bxb6 $6 Rxb5 21.
O-O f4 $14) 20... Qe8 {[%cal Rd7b5]} 21. Bf1 (21. Bxb6 $6 Bxb5 22. Qd2 Ra6 $14)
21... Qc8 22. Qe3 Qb7 (22... Qe8 $16 23. Bxb6 Rxb5 24. Bxb5 Bxb5) 23. f3 ({
But not} 23. Bxb6 $6 d4 $16) 23... Rc8 24. Bd3 Be8 25. Bxb6 Ra8 26. O-O Rc3 27.
Bc5 Nd7 28. Bb4 Rcc8 29. Bd6 Bh5 (29... Nb6 $16 {was called for.} 30. Bc5 Nc4
31. Bxc4 dxc4) 30. b6 Rc6 31. Bc7 Rxc7 32. bxc7 Qxc7 33. Rfe1 Rd8 34. Rb4 Nc5
35. Bf1 h6 36. Rd4 Bg6 37. Rd2 Rb8 38. Qc3 Qb6 {[#] Strongly threatening ...
Ne4+.} 39. Qd4 Qa5 40. Red1 Bh5 41. Rf2 Kh7 42. Kg2 Kg8 (42... Be8 {is a
better defense.} 43. Be2 Qc7) 43. c4 Nb3 44. Qh4 Bf7 {Now ...d4 and Black
clings on.} 45. cxd5 exd5 46. Qe7 d4 47. e6 {White is clearly winning.} Bg6 48.
Rc2 Re8 49. Qd7 Kh7 50. Rc7 {[%csl Gc7][%cal Rd7g7]} Rg8 51. e7 Be8 52. Qd6 Bf7
53. e8=Q {Weighted Error Value: White=0.14/Black=0.32} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.15"]
[White "Tabatabaei, M. Amin"]
[Black "Artemiev, Vladislav"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2639"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,65,33,27,29,28,27,0,2,0,0,0,0,0,0,0,0,-24,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,-2,-9,-14,0,-80,-52,-46,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4.
d3 d6 5. O-O Be7 6. Re1 O-O 7. c3 a6 8. Ba4 Re8 9. Nbd2 {[%cal Bb1d2,Bd2f1,
Bf1g3][%mdl 32]} Bf8 10. Nf1 h6 11. Ng3 b5 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6,
unusual lines.} 12. Bc2 d5 13. a4 {[#] Black must now prevent axb5.} dxe4 14.
dxe4 Qxd1 {[#]} 15. Rxd1 $146 {With the idea axb5.} ({Predecessor:} 15. Bxd1 b4
16. h3 bxc3 17. bxc3 Rb8 18. a5 Na7 19. Ba4 Bd7 20. Be3 Nb5 21. Red1 {0-1 (79)
Vachier Lagrave,M (2779)-Dominguez Perez,L (2739) Chess.com INT 2018}) 15... b4
16. a5 bxc3 17. bxc3 Rb8 18. h3 Rb5 19. Ba4 Rxa5 20. Be3 Bd7 21. Bxc6 Rxa1 22.
Rxa1 Bxc6 23. Rxa6 Bb7 24. Ra7 Bxe4 25. Nxe4 Nxe4 26. Rxc7 f5 27. c4 f4 28. Bb6
Ra8 29. Rc6 ({Don't blunder} 29. Nxe5 $2 Bd6 $19) (29. Kh2 $11 {remains equal.}
) 29... Ra1+ 30. Kh2 Bd6 31. Rc8+ {The position is equal.} Kh7 32. c5 Bxc5 33.
Bxc5 {Weighted Error Value: White=0.12/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.16"]
[White "Navara, David"]
[Black "Gukesh D"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2691"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,81,25,23,34,34,34,35,28,18,18,22,14,14,15,11,14,16,18,8,50,43,67,-15,
-12,-7,-7,-13,-14,-13,-26,-14,-12,-52,0,0,0,0,0,0,0,0,0,0,0,0,93,89,79,113,83,
80,85,14,120,126,120,121,132,143,5047,5043,1443,1163,29980,29981,29981,29982,
29982,29983,29983,29984,29984,29985]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7
5. d3 d6 6. O-O h6 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} 7. Nd5
Nf6 8. c3 O-O {White is slightly better.} 9. a3 Nxd5 10. Bxd5 Bf6 11. b4 Ne7
12. Bb3 b6 13. Re1 Bb7 {[#]} 14. bxc5 $146 ({Predecessor:} 14. Qe2 Rc8 15. Bb2
Ng6 16. g3 Qc7 17. h4 Kh8 18. Nh2 Qd7 19. Qh5 d5 20. Rad1 dxe4 21. dxe4 {
1-0 (38) Ivanisevic,I (2210)-Knezevic,B (2290) Cetinje 1993}) 14... dxc5 15. d4
Qc7 16. h4 (16. d5 $14) 16... cxd4 17. cxd4 exd4 {Black wants to play ...d3!}
18. e5 Bxf3 19. Qxf3 Bxe5 20. Bxf7+ Kh8 {...Nc6 is the strong threat.} 21. Qh5
$1 {[#]} Nf5 22. Bg6 $1 $11 {[%cal Rg6f5]} Qc3 {[%cal Rc3e1]} 23. Bxh6 Nxh6 24.
Qxe5 Rxf2 $1 25. Rac1 Qxa3 26. Rc7 {[%csl Gc7][%cal Re5g7]} Rf6 $1 27. Be4 {
White wants to mate with Rxg7.} Rd8 (27... Raf8 $1 $11 {remains equal.} 28. Qg5
R8f7 29. Rc8+ Rf8) 28. Qg5 $16 {[%csl Gc7][%cal Rg5g7]} Qf8 29. Bd3 $1 {
Threatens to win with Ree7.} Ng8 30. Rxa7 $40 {[%mdl 128] White goes for the
king.} Rc8 31. Qg4 ({White should play} 31. Rb7 $16) 31... Rh6 {[#]} (31...
Rfc6 $1 $11) 32. Rf7 $3 {[%mdl 512]} Qxf7 33. Qxc8 b5 ({Avoid the trap} 33...
Rxh4 $2 34. Bc4 $18) 34. Bxb5 d3 $2 {[%mdl 8192] [#] This costs Black the game.
} (34... Qd5 $16 35. Bd3 (35. Bc4 Rc6 $14) 35... Rc6) 35. Bc4 $1 $18 {[%cal
Rc4f7]} d2 36. Rd1 (36. Bxf7 {gets mated.} dxe1=Q+ 37. Kh2 Qxh4+ 38. Qh3 Qf4+
39. Kg1 Rxh3 40. gxh3 Qxf7 41. h4 Qf3 42. Kh2 Nf6 43. h5 Ng4+ 44. Kg1 Qg3+ 45.
Kh1 Qh2#) 36... Qa7+ {[#]} 37. Kh2 $1 {[%csl Gc4][%cal Rc8g8] White mates.}
Rxh4+ 38. Kg3 {[%csl Gc4][%cal Rc8g8]} Qe3+ 39. Kxh4 {[%csl Gc4][%cal Rc8g8]}
Qf4+ 40. Kh3 {[%csl Gc4][%cal Rc8g8]} Qh6+ 41. Kg4 {[%csl Gc4][%cal Rc8g8]
Weighted Error Value: White=0.08/Black=0.34} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.17"]
[White "Wojtaszek, Radoslaw"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2691"]
[BlackElo "2630"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,61,20,0,0,0,0,0,0,0,0,-29,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,5,9,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. d4 Bb4+
5. Nd2 O-O 6. Ngf3 dxc4 7. Qc2 a5 {E04: Open Catalan: 5 Nf3.} 8. a3 Bxd2+ 9.
Bxd2 b5 10. a4 c6 11. h4 {[#]} h6 $146 ({Predecessor:} 11... Nbd7 12. h5 h6 13.
g4 Nxg4 14. axb5 Bb7 15. Nh2 Nxf2 16. Kxf2 Qh4+ 17. Kf1 Qf6+ 18. Bf3 {1-0 (18)
Dubov,D (2710)-Ding,L (2791) chess24.com INT 2021}) 12. Ne5 {The position is
equal.} Qxd4 13. Nxc6 Nxc6 14. Bxc6 Rb8 15. axb5 Bb7 16. Bc3 (16. Bxb7 {
keeps more tension.} Rxb7 17. Rxa5 Rfb8 18. Bc3 Qe4 19. Qxe4 Nxe4 20. h5) 16...
Qc5 17. Bxb7 Rxb7 18. Rxa5 Rxb5 19. Rxb5 Qxb5 20. Bxf6 gxf6 $11 {[%mdl 4096]
Endgame KQR-KQR} 21. O-O Rb8 22. Rc1 Qd5 23. Qxc4 (23. e4 {is more complex.}
Qb7 24. Qxc4 Qxb2 25. Qc7 Kg7 26. Qf4) 23... Qxc4 24. Rxc4 Rxb2 {KR-KR} 25. e3
f5 26. Kg2 Ra2 27. g4 fxg4 28. Rxg4+ Kf8 29. Rf4 Kg7 30. Rg4+ Kf8 31. Rf4 {
Not much happened in this game.  Weighted Error Value: White=0.03/Black=0.02}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.18"]
[White "Brkic, Ante"]
[Black "Korobov, Anton"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "2621"]
[BlackElo "2690"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,80,20,5,46,47,75,54,70,39,72,0,29,14,45,51,56,-11,-12,-7,-6,-47,-43,
-22,-55,-43,-24,-10,0,0,0,0,0,0,0,0,0,-40,-42,-46,-28,-43,-41,-52,-36,-40,-52,
-308,-290,-247,-293,-320,-310,-329,-329,-329,-329,-320,-314,-337,-323,-488,
-459,-572,-538,-529,-511,-422,-362]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6
5. Nc3 a6 6. Be3 e6 7. Be2 Be7 8. g4 Nfd7 {B84: Sicilian Scheveningen: 6 Be2
a6, lines without early Be3.} 9. a3 O-O 10. Qd2 b5 {White is slightly better.}
11. g5 Bb7 12. f4 (12. h4 $16) 12... Nc6 {[#]} 13. O-O-O $146 ({Predecessor:} 
13. h4 Rc8 14. h5 Nb6 15. O-O-O Na5 16. g6 Nac4 17. gxf7+ Kxf7 18. Bxc4 Nxc4
19. Qe2 Nxa3 20. h6 {1-0 (20) Aitbayev,A (2742)-Jakubowski,K (2531) Chess.com
INT 2020}) 13... Rb8 14. Rhg1 b4 15. Nxc6 (15. axb4 $14 Nxb4 16. Nb3) 15...
Bxc6 $11 16. axb4 Rxb4 17. Nd5 Rxe4 18. Nxe7+ Qxe7 19. Rg3 d5 20. Bd4 Qd6 21.
Rg4 f5 22. gxf6 Nxf6 23. Rh4 Be8 24. Bf3 Bg6 25. Rg1 {[#]} Rxd4 $1 26. Qxd4 Rc8
27. f5 Bxf5 28. Qxf6 {[%csl Gg1][%cal Rf6g7]} Rxc2+ {[%mdl 64] Double Attack}
29. Kd1 {[%csl Gg1][%cal Rf6g7] [#]} Qc7 $40 {[%mdl 128] Strongly threatening .
..Rc1+. Black has some attack.} 30. Rxg7+ $2 {[%mdl 8192] This costs White the
game.} Qxg7 $19 {[%cal Rg7g1]} 31. Qd8+ Qf8 32. Qg5+ Kh8 33. Be4 Rc4 (33...
Bxe4 34. Qe5+ Kg8 35. Rxe4 $19) ({Less strong is} 33... Rxb2 34. Bxf5 exf5 35.
Qe3 $17) 34. Bxf5 {[%csl Gf5][%cal Rh4h7]} Rxh4 ({Weaker is} 34... exf5 35.
Rxc4 dxc4 36. Kc2 $17) ({Inferior is} 34... Qxf5 35. Qd8+ Kg7 36. Qe7+ Kh8 37.
Qd8+ Kg7 38. Qe7+ Kh8 39. Qd8+ $11) 35. Qxh4 {[%csl Gf5][%cal Rh4h7]} Qxf5 {
KQ-KQ} 36. Qd4+ Kg8 37. b4 (37. Kd2 $142) 37... Qf3+ {Black is clearly winning.
} 38. Kc1 Qh1+ 39. Kb2 {intending Qg4+.} Qxh2+ 40. Ka3 Qd6 {Weighted Error
Value: White=0.31/Black=0.08} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.19"]
[White "Kryvoruchko, Yuriy"]
[Black "Chigaev, Maksim"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2686"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,94,8,0,8,11,8,0,0,0,11,0,7,0,1,0,0,0,-7,0,0,-8,0,0,0,-19,49,-4,0,-12,
-6,-7,-2,-7,43,41,43,33,35,30,43,43,42,43,45,37,38,33,22,27,41,11,11,11,12,11,
11,12,12,12,12,12,13,4,11,6,37,27,30,0,0,0,8,8,8,8,0,0,0,0,0,0,0]} 1. e4 c5 2.
Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 e5 7. Nde2 Be7 8. O-O Be6 {
B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 9. f4
exf4 10. Nxf4 Nc6 11. Be3 Ne5 12. a4 O-O 13. Bd4 Rc8 {[#]} 14. h3 $146 ({
Predecessor:} 14. Qd2 Re8 15. Ncd5 Bxd5 16. exd5 Nfd7 17. Bf5 Bg5 18. Rae1 g6
19. Bh3 Rc7 20. Qf2 {0-1 (52) Abdusattorov,N (2608)-Dominguez Perez,L (2763)
chess24.com INT 2020}) 14... Re8 15. Kh1 Nfd7 16. Ncd5 Bg5 17. a5 Nc6 18. Bc3
Nce5 19. Qe2 Nf6 (19... Bxf4 $11 20. Nxf4 Nc5) 20. Qf2 (20. Bxe5 $14 dxe5 21.
Nxe6 fxe6 22. Nb6) 20... Bxd5 $11 21. Nxd5 Nxd5 22. exd5 {[#] And now Bxe5
would win.} Rc7 {[%cal Bc8c7,Bc7e7,Be7e4][%mdl 32]} 23. Bd4 Rce7 24. Qf5 Nxd3
25. Qxg5 {[%csl Gd4][%cal Rg5g7]} Ne5 26. c4 f6 27. Qg3 Ng6 28. Rae1 Re4 29.
Bc3 Rxc4 30. Rxe8+ Qxe8 31. Qxd6 Re4 32. Qc7 {[#] aiming for d6.} Re7 33. Qc5
Qb5 34. Qxb5 axb5 {[%mdl 4096] Endgame KRB-KRN} 35. d6 Rd7 36. Rf5 Rxd6 37.
Rxb5 Rd7 38. b4 Kf7 39. Rc5 Ke6 40. b5 Rd5 41. Rc7 Rxb5 {The position is equal.
} 42. Rxg7 Rc5 43. Bd4 Rd5 44. Bb6 Rd7 45. Rg8 f5 46. Kh2 f4 47. Kg1 Ke5 {
Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.20"]
[White "Moussard, Jules"]
[Black "Predke, Alexandr"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2632"]
[BlackElo "2666"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,114,12,20,20,15,10,18,2,8,14,10,5,7,2,6,-13,-13,0,-2,-7,0,-66,-59,
-62,-56,-60,-56,-178,-170,-188,-177,-185,-178,-188,-186,-179,-183,-181,-184,
-181,-189,-259,-21,-23,-16,-33,-23,-62,-72,-163,-155,-161,-163,-178,-158,-214,
-188,-217,-221,-216,-199,-208,-209,-219,-207,-235,-235,-235,-235,-235,-235,
-345,-345,-370,-370,-370,-370,-370,-370,-370,-363,-363,-362,-355,-345,-344,
-337,-329,-322,-322,-335,-545,-547,-544,-509,-502,-470,-623,-493,-442,-409,
-739,-602,-506,-500]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. O-O d6 6. c3
h6 7. b4 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Bb6 8.
Nbd2 {seems to push 8.a4 aside.} O-O 9. Re1 {The position is equal.} Ng4 $5 {
[%mdl 4] An interesting side line.} 10. Re2 {[#]} Ne7 $146 ({Predecessor:} 
10... Bxf2+ 11. Rxf2 Nxf2 12. Kxf2 Qf6 13. Kg1 Qg6 14. Nf1 Kh8 15. Ne3 Ne7 16.
Nh4 Qh7 {1-0 (40) Szilagyi,Z-Salvador,E St Lorenzo 1995}) 11. Bb3 c6 12. d4 Ng6
13. Nc4 Bc7 14. dxe5 dxe5 15. Rd2 Qe7 16. b5 (16. Nd6 $11) 16... cxb5 $15 17.
Ba3 Qf6 18. Nd6 Bb6 19. Qf1 ({White should try} 19. Rb1 $15) 19... Qf4 $1 $19
20. h3 {[#]} (20. Nxb5 $2 Nh4 $1 $19 {[%mdl 512]}) 20... Nh2 {[%mdl 512]} 21.
Nxh2 {Strongly threatening Rad1.} Qxd2 22. Rd1 Qf4 (22... Qxc3 23. Nxb5 Qc6 24.
Bxf8 $17) 23. Nxb5 Rd8 (23... Qxe4 24. Bxf8 Kxf8 25. Nd6 $14) 24. Rxd8+ Bxd8
25. Nd6 Be6 26. g3 (26. Ng4 $142 Bxg4 27. hxg4) 26... Qg5 $2 (26... Qd2 $19 27.
Bxe6 fxe6) 27. Nxf7 $1 $11 Bxf7 28. Bxf7+ Kh7 (28... Kxf7 $2 29. Qc4+ Ke8 30.
Qb5+ Kf7 31. Qxb7+ Kg8 32. Nf3 $18) 29. Qd1 Bb6 {aiming for ...Qxg3+.} 30. Qg4
{Black continues to play with concentration.} (30. Ng4 $17) 30... Qxg4 $19 31.
Nxg4 Rc8 32. c4 Bc5 33. Bc1 (33. Be6 $17 Rc6 34. Bxc5) 33... Rc6 34. Be3 Bxe3
35. Nxe3 {[%mdl 4096] Endgame KRN-KBN} Ra6 36. c5 Rc6 37. Bd5 Rc7 ({Don't play
} 37... Rxc5 38. Bxb7 Ne7 39. Ba6 $17) 38. Nf5 {[#]} Ne7 $1 ({Much less strong
is} 38... Rxc5 39. Bxb7 Rc7 40. Ba6 $17) 39. Nxe7 Rxe7 {KR-KB} 40. Kg2 Rc7 41.
h4 (41. Kf3 $142) 41... Kg6 ({Not} 41... Rxc5 42. Bxb7 Rc2 43. Bd5 $17) 42. Kf3
Kf6 43. Ke3 Rxc5 44. Bxb7 Rc3+ 45. Kd2 Ra3 46. Bd5 a5 47. Ke2 Ke7 48. Kf1 Kd6
49. Kg2 Kc5 50. h5 Kd4 51. Kh3 $2 (51. Kf1) 51... Rf3 52. Kg2 Rf8 53. Kf1 Kd3
54. Bc6 Rb8 55. Bd5 {and the idea Kg2 leaves White hopeful.} Rb2 56. a4 (56. g4
$142) 56... Rb4 57. Bc6 Kd4 {Weighted Error Value: White=0.31/Black=0.09} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.21"]
[White "Sargissian, Gabriel"]
[Black "Indjic, Aleksandar"]
[Result "1-0"]
[ECO "A70"]
[WhiteElo "2664"]
[BlackElo "2612"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,81,53,0,16,35,33,31,29,16,44,21,41,0,0,0,20,15,16,15,16,23,23,8,20,8,
8,12,12,14,28,12,23,23,14,7,122,64,215,218,224,217,224,217,225,229,212,207,226,
214,216,210,216,212,221,217,592,578,951,996,977,973,987,962,1125,1085,1125,
1045]} 1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 d6 5. Nc3 exd5 6. cxd5 g6 7. h3 Bg7
8. e4 O-O 9. Be3 (9. Bd3 $14) 9... b5 {A70: Modern Benoni: 6 e4 g6 7 Nf3.} 10.
e5 dxe5 11. Bxb5 e4 {White is slightly better.} 12. Ne5 (12. Bxc5 exf3 13. Qxf3
a6 $15) 12... Nh5 13. Nc6 Nxc6 14. dxc6 {Hoping for Qxd8.} Qa5 15. a4 a6 16.
Be2 Nf6 17. O-O Be6 18. Qd6 Rfd8 19. Qxc5 Qxc5 20. Bxc5 Rdc8 21. a5 Rxc6 {[#]}
22. Be3 $5 $146 {[%mdl 8] An interesting novelty.} ({Predecessor:} 22. Bd4 Rb8
23. Rfb1 Bc4 24. b4 Bxe2 25. Nxe2 Nd5 26. b5 axb5 27. a6 Nf4 28. Bxg7 Nxe2+ {
1/2-1/2 (101) Bluebaum,M (2674)-Shevchenko,K (2619) Polanica Zdroj 2021}) 22...
Rb8 23. Rfd1 h5 (23... Rxb2 24. Rd8+ Bf8 {[#]} 25. Bh6 $1 $18) 24. Rd2 Kh7 25.
Ra4 Bb3 (25... Bf8 $11 {remains equal.}) 26. Rad4 $16 Rc5 $2 {[#] This move
loses the game for Black.} ({Better is} 26... Ne8 $14) 27. Rb4 $3 $18 {[%cal
Rb4b8][%mdl 576] Discovered Attack} Rxb4 28. Bxc5 Rb8 29. Bb6 ({Don't play} 29.
Bxa6 $6 Ra8 $16) 29... Be6 30. Bxa6 Nd7 31. Be3 ({Less strong is} 31. Nxe4 Nxb6
32. Ng5+ (32. axb6 Rxb6 {[%mdl 64] Double Attack} 33. Ng5+ Kh6 $14) 32... Kh6
$14) 31... Bxc3 32. bxc3 Rb1+ 33. Kh2 Ne5 34. Be2 {And now a6 would win.} Ra1
35. a6 {Rd8 is the strong threat.} h4 $2 (35... Bc4 36. a7 Bd3) 36. Rd8 {
White is clearly winning.} Bc4 37. Bxc4 Nxc4 38. Bd4 {[%csl Gd4][%cal Rd8h8]}
g5 39. a7 Nd2 40. a8=Q Nf1+ 41. Kg1 {Weighted Error Value: White=0.05/Black=0.
36} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.22"]
[White "Ponomariov, Ruslan"]
[Black "Sjugirov, Sanan"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2631"]
[BlackElo "2663"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,97,6,0,22,16,23,16,22,18,28,14,18,2,14,23,22,0,0,0,0,0,9,-11,-4,-25,
-8,-31,-20,-47,0,0,-16,-44,22,22,22,22,22,22,37,22,22,33,28,0,0,0,0,0,14,13,14,
14,16,14,14,13,14,14,14,11,8,8,9,7,15,0,8,16,12,3,1,4,4,0,2,0,0,0,0,0,0,0,0,0,
0,0,0,0]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. c4 e6 5. Nc3 Ne7 6. a3 dxc4 {B12:
Caro-Kann: Advance Variation.} 7. Bxc4 Nd7 8. Nge2 Nb6 9. Bb3 {9.Bb3 has
become a bit dusty these days.} h6 10. O-O Qd7 {[#]} 11. Be3 $146 ({
Predecessor:} 11. a4 a5 12. Bc2 Bxc2 13. Qxc2 Nf5 14. Qe4 Be7 15. Bf4 g5 16.
Be3 h5 17. Rfd1 {1/2-1/2 (45) Nevednichy,V (2540)-Lenic,L (2641) Hungary 2012})
11... Ned5 12. Ng3 Bg6 13. h4 Be7 14. h5 Bh7 15. Qg4 g5 16. Nce4 O-O-O 17. Rac1
Kb8 18. Rfd1 Rhf8 19. Qe2 f5 20. exf6 $1 Bxf6 21. Bc2 {[#] aiming for Nc5.} Be7
(21... Qf7 $15) 22. Nc5 $1 $11 {[%cal Rc5d7]} Bxc5 23. dxc5 Bxc2 24. Qxc2 Nxe3
25. Rxd7 Nxc2 26. Rxd8+ Rxd8 27. Rxc2 {[%mdl 4096] Endgame KRN-KRN} Rd1+ {
The position is equal.} 28. Kh2 Nd5 29. Ne4 Re1 30. Nd6 Kc7 31. Nf7 Nf6 32.
Nxh6 Nxh5 33. f3 Nf6 34. Kg3 Re5 35. Ng4 Nh5+ 36. Kf2 Rd5 37. g3 b6 38. Ne3 Rd3
39. cxb6+ axb6 40. Nc4 Rd5 41. a4 Nf6 42. Re2 b5 43. axb5 (43. Rxe6 {is
interesting.} Ng4+ 44. fxg4 bxc4 45. Re4 Kd6 46. Rxc4 Rd2+ 47. Kf3) 43... cxb5
44. Rxe6 {[#] Hoping for Nb6.} (44. Na5 {seems wilder.} Kd6 45. Nb7+ Ke7 46. b4
Nd7 47. Rc2) 44... Ng4+ 45. fxg4 bxc4 46. Ke3 Rb5 47. Kd4 Rxb2 48. Kxc4 Rg2 49.
Rg6 {Weighted Error Value: White=0.05/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.23"]
[White "Grandelius, Nils"]
[Black "Dreev, Aleksey"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "2662"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,60,38,10,13,0,55,39,50,29,43,8,11,7,2,0,12,0,31,23,39,30,33,11,16,12,
12,-12,7,0,25,16,59,60,39,27,37,35,68,35,35,17,21,0,0,0,0,0,0,0,0,0,0]} 1. e4
c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Be3 Qb6 {B15: Caro-Kann:
3 Nc3: 3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6.} 7. Qe2 Be6 (7... Bd6 $11)
8. c3 $14 {[#] Strongly threatening d5!} Qc7 {[#] White is slightly better.} 9.
Nf3 $146 (9. Qc2 {keeps more tension.} Nd7 10. Bd3 O-O-O 11. Ne2 c5 12. O-O) ({
Predecessor:} 9. Qc2 Nd7 10. Bd3 Nb6 11. Ne2 Nd5 12. a3 Bd6 13. g3 Nxe3 14.
fxe3 g6 15. c4 {0-1 (51) Trzeciakiewicz,M (1549)-Lewandrowski,T (1788)
Polanica Zdroj 2012}) 9... Bd6 10. g3 Nd7 11. Bg2 O-O 12. O-O Rfe8 13. c4 f5
14. Ng5 {Threatens to win with d5.} f4 {[#]} 15. Qc2 $1 Nf8 16. Bd2 Qd7 17.
Rfe1 ({Much worse is} 17. gxf4 Bf5 $17) 17... Bf5 18. Qc3 (18. Qb3 {keeps more
tension.} fxg3 19. hxg3 Ne6 20. Nxe6 Bxe6 21. Re3) 18... fxg3 19. hxg3 Rxe1+ (
19... Be7 {feels hotter.} 20. Nf3 Rad8 21. Qb3 Ng6 22. Bb4 Bf6) 20. Rxe1 Re8
21. Rxe8 Qxe8 22. Qe3 Qxe3 23. Bxe3 Nd7 24. Ne4 Be7 25. Bf4 (25. Kf1 {with
more complications.} h6 26. Ke2 Kf8 27. Bf4 Ke8 28. Nd6+) 25... Nf6 {The
position is equal.} 26. Nd6 (26. f3 {is interesting.} b5 27. cxb5 cxb5 28. Bb8
a5 29. Nc5) 26... Bxd6 27. Bxd6 Bd3 28. c5 Bc4 29. a3 Bd5 30. Bh3 Be6 {
Weighted Error Value: White=0.10/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.24"]
[White "Kovalev, Vladislav"]
[Black "Maghsoodloo, Parham"]
[Result "0-1"]
[ECO "B68"]
[WhiteElo "2634"]
[BlackElo "2701"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,96,13,58,8,29,42,66,74,97,63,63,1,15,10,37,12,26,25,45,23,50,44,47,
11,82,60,69,0,0,0,0,0,-9,-10,0,0,0,0,0,-8,0,-163,0,-306,-298,-288,-291,-920,
-915,-919,-901,-948,-942,-960,-943,-953,-953,-949,-941,-936,-902,-815,-738,
-716,-709,-814,-724,-808,-774,-809,-800,-783,-750,-29963,-29965,-29965,-29966,
-29964,-29965]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 e6
7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7 10. Be2 Rc8 11. Bf3 {B68: Sicilian:
Richter-Rauzer: 7...a6 8 0-0-0 Bd7 9 f4 Be7 .} O-O 12. Nb3 Ne8 13. Bxe7 {
[#] White is slightly better.} Nxe7 $146 ({Predecessor:} 13... Qxe7 14. g4 b5
15. e5 b4 16. Na4 d5 17. Nbc5 Nc7 18. Nxd7 Qxd7 19. Nb6 Qe7 20. Nxc8 Rxc8 {
1-0 (41) Eckert,F-Schwerdt,R Germany 1996}) 14. e5 d5 15. g4 (15. h4 $14) 15...
b5 $11 16. Nd4 Qc7 17. g5 b4 18. Nce2 Qc4 19. Kb1 Nc7 20. h4 Nb5 21. Nxb5 Bxb5
(21... Qxb5 $11 22. h5 Qa4) 22. Nd4 $16 Nc6 {White must now prevent ...Nxd4.}
23. Nxc6 ({Better is} 23. Nb3 $1 $14) 23... Rxc6 $11 24. f5 a5 25. Rh2 $1 a4 ({
But not} 25... exf5 $2 26. Bxd5 Qg4 27. Bxc6 $18) 26. Qe3 b3 (26... exf5 $6 27.
Bxd5 Qc5 28. Qf2 $16) 27. axb3 axb3 28. Qxb3 ({Much worse is} 28. cxb3 Qb4 $17)
28... Qc5 29. Qa3 Qb6 30. f6 $2 {[#] Black converts the advantage convincingly.
} (30. g6 $11 {and White stays safe.} Rcc8 31. Qd6 Qxd6 32. exd6 (32. gxh7+
Kxh7 33. exd6 Rcd8 $11)) 30... Qc7 $2 (30... Qb7 $1 $19 31. Qe3 Ra8) 31. fxg7
$4 {[%mdl 8192]} (31. g6 $11 {and White has nothing to worry.} hxg6 32. Qe7)
31... Rc8 $19 32. Bh5 Rxc2 33. Rxc2 (33. Qf8+ Rxf8 34. gxf8=Q+ Kxf8 35. Rxc2
Qxe5 36. Rdd2) 33... Qxc2+ 34. Ka1 Bc6 35. Rf1 Ra8 36. Qxa8+ Bxa8 37. Bxf7+
Kxg7 {Strongly threatening ...Qa4+.} 38. Bxe6 Qc5 39. Rf7+ Kh8 40. Rd7 Qb6 41.
Rd6 Bc6 42. h5 Qa7+ 43. Kb1 Be8 44. Bxd5 Qg1+ 45. Ka2 Qxg5 46. h6 Qxe5 {
Black mates.} 47. Rd8 {[#]} Qxd5+ $3 {[%mdl 576] Remove Defender} 48. Rxd5 Bf7
{Weighted Error Value: White=0.48/Black=0.16} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.25"]
[White "Xiong, Jeffery"]
[Black "Abasov, Nijat"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2700"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,57,11,25,20,23,27,26,28,20,22,81,90,66,75,91,85,125,110,125,125,124,
126,127,121,156,134,135,129,133,131,135,117,129,122,131,133,181,152,152,152,
152,152,213,212,211,206,246,239,306,306]} 1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. c4
e6 5. Qb3 Nbd7 6. e3 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and
2...Nf6 3 Bf4.} Bd6 7. Bxd6 cxd6 {[#]} 8. Nc3 $146 {[%cal Rc4d5] White has an
edge.} ({Predecessor:} 8. cxd5 Qa5+ 9. Nbd2 exd5 10. Bb5 O-O 11. O-O Nb6 12. a4
Ne4 13. Rfd1 a6 14. Bd3 {1-0 (43) Urh,Z (2216)-Batagan,I (1846) Iasi 2021})
8... Qa5 9. Nd2 ({Wrong is} 9. Qxb7 $2 Rb8 $19) 9... Rc8 (9... O-O $11) 10.
cxd5 $16 ({Avoid the trap} 10. Qxb7 $2 Rb8 $19) 10... exd5 11. Be2 O-O 12. O-O
({Don't play} 12. Qxb7 $6 Rxc3 13. bxc3 Qxc3 $11) 12... Nb6 13. a4 $1 a6 14.
Qa3 $1 {aiming for b4.} Nc4 15. Nxc4 dxc4 16. Qxd6 Rc6 17. Qe5 Qxe5 18. dxe5
Ne4 19. Nd5 {Black must now prevent Ne7+.} Re8 20. Rfd1 {Threatens to win with
Ne7+!} Kf8 21. f3 $36 {[%mdl 2048] White is in control.} Nc5 22. e4 Bg6 23. a5
Rxe5 24. Nb6 c3 25. bxc3 f5 (25... Rc7 $16 {is a better defense.} 26. Rd8+ Re8)
26. f4 $1 $18 {[%cal Rf4e5]} Re8 27. e5 Nb3 {[#]} 28. Ra3 {[%cal Ra3b3]} Rxc3 {
[#]} 29. Bf3 $1 {Black got outplayed after the opening.  Weighted Error Value:
White=0.03/Black=0.19} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.26"]
[White "Svidler, Peter"]
[Black "Kuzubov, Yuriy"]
[Result "0-1"]
[ECO "C24"]
[WhiteElo "2694"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "162"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,162,6,16,16,25,20,18,-3,-6,-20,-34,-38,-48,-83,-92,-98,-90,-89,-64,
-86,-51,-93,-83,-99,-94,-100,-102,-96,-94,-93,-93,-107,-90,-100,-100,-102,-119,
-122,-126,-130,-127,-127,-110,-179,-189,-176,-176,-218,-203,-352,-358,-370,
-218,-193,-156,-154,-154,-152,-132,-131,-125,-121,-130,-115,-126,-126,-112,
-112,-16,-14,-22,-72,-79,-79,-39,-74,-56,-21,-19,-101,-22,-29,-29,-93,-64,-189,
-189,-187,-174,-188,-182,-182,-172,-250,-247,-241,-243,-241,-241,-245,-245,
-243,-243,-228,-187,-227,-184,-193,-208,-210,-214,-211,-208,-200,-188,-193,
-193,-185,-184,-177,-177,-268,-237,-189,0,-213,0,-102,-21,-105,-105,-116,-101,
-152,-61,-68,-68,-86,-89,-241,-241,-241,-241,-487,-435,-29968,-29970,-29967,
-29971,-29976,-29977,-29980,-29981,-29981,-29981]} 1. e4 e5 2. Bc4 Nf6 3. d3 c6
4. Nf3 d5 5. Bb3 Bb4+ 6. Bd2 {C24: Bishop's Opening: 2...Nf6.} Bxd2+ 7. Qxd2 {
now scores much better than the old 7.Nbxd2.} a5 8. a3 {[#] The position is
equal.} (8. Nxe5 $2 a4 $19) 8... O-O $146 ({Predecessor:} 8... Qd6 9. Qg5 O-O
10. Qxe5 Qxe5 11. Nxe5 dxe4 12. d4 Nbd7 13. Nc3 Nxe5 14. dxe5 Ng4 15. Nxe4 Nxe5
{1-0 (34) Svidler,P (2723)-Navara,D (2719) chess24.com INT 2020}) 9. Nc3 Re8
10. O-O Bg4 11. Ng5 h6 12. f3 Bc8 13. Nh3 Bxh3 14. gxh3 Nbd7 15. Qf2 {[%cal
Re4d5]} Nf8 16. f4 exf4 17. Qxf4 Ne6 18. Qf2 a4 19. Ba2 dxe4 $1 20. Nxe4 Nxe4
21. dxe4 Qe7 22. Kh1 Ra5 23. Rae1 Re5 24. c3 Rf8 25. Rg1 Kh8 26. Bb1 (26. Qg2
$17 {is a better defense.}) 26... Ng5 $19 27. Qg3 f6 28. Re2 f5 29. Reg2 (29.
Ree1 {was called for.} Nxe4 30. Qf4) 29... fxe4 30. h4 {[#]} Nf3 (30... Rf3
$142 $1 31. Qg4 Nh3 32. Qc8+ Qf8 33. Qxf8+ Rxf8) 31. Rf1 Rf6 {Threatens to win
with ...e3.} 32. Bxe4 Rxe4 33. Rxf3 Re1+ 34. Rg1 Re2 35. Rxf6 Qxf6 $17 {
[%mdl 4096] Endgame KQR-KQR} 36. Rg2 Qf1+ 37. Rg1 {[%csl Gg1][%cal Rg3g7]} Qf7
{Strongly threatening ...Rd2.} 38. Rg2 Qe7 (38... Re4 $17 39. Rf2 Qd5) 39. Rxe2
$11 Qxe2 {KQ-KQ} 40. Qb8+ Kh7 {[%cal Re2f1]} 41. Qf4 Qc2 $1 (41... Qxb2 42.
Qe4+ Kg8 43. Qe8+ Kh7 44. Qe4+ g6 45. Qe7+ Kh8 46. Qe8+ Kh7 47. Qf7+ Kh8 48.
Qe8+ Kh7 49. Qf7+ Kh8 50. Qe8+ $11) 42. Qb4 b5 43. Kg1 Qe2 44. h3 (44. Qf4 $11)
44... Kg6 (44... Qc2 $1 $17) 45. Qc5 Qe4 46. Kh2 (46. Qf2 $11) 46... Kf7 $1 $17
47. Qd6 ({White should play} 47. Qa7+ $1 $15 Kf6 48. Qd7) 47... Qxh4 $19 48.
Qd7+ Qe7 49. Qxc6 Qe5+ 50. Kg2 Qe2+ 51. Kg3 (51. Kg1 $142) 51... Qd3+ (51...
Qxb2 52. Qd5+ Kg6 53. Qe4+ Kf7 54. Qd5+ Kf8 55. Qd8+ Kf7 56. Qd5+ $11) 52. Kh2
Qc2+ $1 53. Kh1 Qb1+ (53... Qxb2 54. Qd5+ Kf8 55. Qd8+ Kf7 56. Qd5+ Kg6 57.
Qe4+ Kg5 58. Qg4+ Kf6 59. Qf3+ Ke6 60. Qe4+ Kd7 61. Qb7+ Kd8 62. Qb8+ Ke7 63.
Qb7+ Kf8 64. Qf3+ Kg8 65. Qa8+ Kf7 66. Qd5+ $11) 54. Kh2 Qxb2+ {[%mdl 64]
Double Attack} 55. Kg3 Qe2 $1 (55... Qxa3 56. Qd5+ Kf6 57. Qd4+ Kf7 58. Qd5+
Kf6 59. Qd4+ Ke6 60. Qe3+ Kf7 61. Qf3+ Ke7 62. Qe3+ Kf8 63. Qf3+ Ke7 64. Qe3+
Kf8 65. Qf3+ Ke7 $17) 56. Qd7+ Kg6 57. Qc6+ Kh7 58. Qd5 Qe3+ 59. Kg4 Qg1+ ({
Much less strong is} 59... Qxc3 60. Qxb5 Qd4+ 61. Kf3) 60. Kf4 Qf1+ $1 61. Kg3
{intending Qe4+.} Qc4 62. Qf5+ Kg8 63. Qe5 Qd3+ 64. Kf2 Kf7 ({Not} 64... Qxh3
65. Qe8+ Kh7 66. Qe4+ g6 67. Qe7+ Kg8 68. Qe8+ Kh7 69. Qf7+ Kh8 70. Qf8+ Kh7
71. Qf7+ Kh8 72. Qf8+ Kh7 73. Qf7+ $11) 65. h4 (65. Kg1 $142) 65... Qc4 66. Kg3
Qd3+ $2 (66... g6 $19 {...h5 is the strong threat.} 67. h5 gxh5 68. Qxh5+ Ke7
69. Qe5+ Kd7 70. Qf5+ Kc7 71. Qe5+ Kc6 72. Qe8+ Kb7) 67. Kf4 $2 (67. Kf2 $1 $11
) 67... Kg8 $2 (67... g6 $19 {And now ...Qc4+ would win.} 68. h5 gxh5 69. Qxh5+
Ke7 70. Qe5+ Kd7) 68. h5 (68. Qe8+ $1 $11 Kh7 69. h5) 68... Qc4+ (68... Qd7 $17
) 69. Kg3 (69. Ke3 $1 $11 {keeps the balance.}) 69... Qc6 $17 70. Qb8+ Kh7 $1
71. Qe5 (71. Kh2 $142) 71... Qd7 ({Better is} 71... g6 $1 $17 72. Qe7+ Kg8 73.
hxg6 Qxg6+ 74. Kh4 Qf5 75. Qe8+ Kg7) 72. Qe4+ $15 Kg8 73. c4 Qd6+ 74. Kh3 $2 (
74. Kg2 $17 {keeps fighting.}) 74... Qxa3+ $19 75. Kg4 Qc5 $1 {[%cal Rc5c4]}
76. Qe8+ $2 (76. Qa8+ {was forced.} Kf7 77. Qb7+ Ke6 78. Qa6+ Ke7 79. cxb5)
76... Qf8 77. Qxb5 {[#]} (77. Qe6+ $19 Kh8 78. cxb5 Qb4+ {[%mdl 64] Double
Attack} 79. Kf3 Qb3+ 80. Qe3 (80. Qxb3 {gets mated.} axb3 81. Ke4 b2 82. Kd5 g5
83. Kc6 g4 84. b6 b1=Q 85. b7 g3 86. Kc7 Qc1+ 87. Kd8 Qf4 88. Kc8 Qf8+ 89. Kc7
Qc5+ 90. Kd7 Qb6 91. b8=Q+ Qxb8 92. Ke6 g2 93. Kf6 g1=Q 94. Kf5 Qg5+ 95. Ke4
Qb3 96. Kd4 Qge3#) 80... Qxb5 81. Qe4) 77... Qa8 $1 {Black mates.} 78. c5 {[#]}
a3 $1 {[%cal Ba4a3,Ba3a2][%mdl 32]} 79. c6 a2 80. Qd5+ Kh8 81. c7 Qxd5 {
Weighted Error Value: White=0.17/Black=0.11} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.27"]
[White "Yakubboev, Nodirbek"]
[Black "Eljanov, Pavel"]
[Result "1/2-1/2"]
[ECO "C26"]
[WhiteElo "2621"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,81,31,15,11,23,0,13,7,10,10,20,19,13,0,1,-2,0,-3,-16,-20,-14,-15,-11,
-16,-15,-40,-32,-43,-43,-38,-24,-74,-34,-37,-40,-58,-58,-61,-50,-53,-43,-46,
-36,-35,-44,-50,-26,-25,-21,-18,-21,-56,-28,-20,-30,-22,-21,-18,0,0,0,0,0,0,0,
0,0,0,0,0,0,0]} 1. e4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 Nc6 5. d3 d6 6. Na4 Bb6 7.
Ne2 {C26: Vienna Game: 2...Nf6, sidelines .} Ba5+ {[#]} 8. Nac3 $146 ({
Predecessor:} 8. c3 b5 9. b4 Bxb4 10. cxb4 bxa4 11. Qxa4 Bd7 12. b5 Ne7 13. Qc4
a6 14. bxa6 Qc8 {0-1 (40) Mrdja,M (2296)-Blazeka,M (2329) Zagreb 2018}) 8...
Bg4 {With the idea ...Nd4.} 9. O-O Qd7 10. Bg5 Bxc3 11. bxc3 Ng8 12. f3 (12. c4
{with more complications.} Nge7 13. Qd2 O-O 14. Rae1 Rae8 15. Nc3) 12... Bh3
13. c4 Bxg2 14. Kxg2 h6 15. Be3 Nge7 16. f4 f5 17. Nc3 O-O 18. Qd2 fxe4 19.
Nxe4 Nf5 20. Rae1 b6 21. Nc3 Rae8 22. Nd5 Nce7 23. fxe5 Nxd5 24. cxd5 {Black
should prevent e6.} dxe5 25. c4 c6 26. dxc6 Qxc6+ 27. Kg1 e4 28. Rf4 $1 exd3
29. Qxd3 Nxe3 30. Rxe3 Qc5 31. Rfe4 Rxe4 (31... Rd8 {feels hotter.} 32. Qe2 Qf5
33. Qe1 Qf6 34. Rf4 Qb2) 32. Qxe4 $15 {[%mdl 4096] Endgame KQR-KQR} Rc8 33.
Qd5+ Qxd5 {The position is equal.} 34. cxd5 $11 {KR-KR} Rc1+ 35. Kf2 Rd1 36.
Re7 a5 37. Rd7 Rd2+ 38. Ke3 Rxa2 39. Rb7 {[#] d6 is the strong threat.} Kf8 40.
Rxb6 Rxh2 41. Ke4 {Weighted Error Value: White=0.06/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.28"]
[White "Yilmaz, Mustafa"]
[Black "Van Foreest, Jorden"]
[Result "1-0"]
[ECO "D32"]
[WhiteElo "2626"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "171"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,171,14,41,33,39,34,60,68,65,68,57,34,69,62,70,71,77,68,53,68,76,62,
78,60,55,66,97,83,114,113,112,112,111,114,123,105,114,99,102,99,107,107,120,94,
108,116,132,85,85,93,95,87,115,128,126,0,43,0,126,121,119,123,129,0,104,0,115,
129,127,125,118,96,96,0,94,98,96,98,101,86,85,39,84,56,74,65,90,48,104,104,104,
104,104,0,60,0,92,83,83,87,84,87,83,80,83,83,80,77,80,83,75,79,110,109,110,110,
181,168,189,197,272,253,272,237,265,0,81,0,261,230,265,268,259,256,248,232,595,
592,1014,1004,29959,29962,29961,29962,29962,29962,29964,29965,29964,29964,
29962,29961,29954,29945,29938,29954,9504,8494,9504,8494]} 1. d4 d5 2. c4 e6 3.
Nc3 a6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 c5 7. Nf3 Nc6 8. Be2 {D32: Tarrasch
Defence: Sidelines and lines without g3.} c4 9. Ne5 Bd6 {[#]} 10. Nxc6 $146 {
White is slightly better.} ({Predecessor:} 10. Bf3 O-O 11. O-O Be6 12. b3 Bb4
13. Ne2 Nxe5 14. Bxe5 Ne4 15. bxc4 Nd2 16. cxd5 Nxf3+ 17. gxf3 {1-0 (43)
Schmeidler,M-Brasch,H Kirchseeon 1989}) 10... bxc6 11. Bxd6 Qxd6 12. O-O Bf5
13. b3 cxb3 14. axb3 a5 15. Qc1 h5 16. Qa3 Ke7 17. Rfc1 Rhb8 18. Na4 Qxa3 19.
Rxa3 Bd7 20. Rca1 Bg4 21. f3 Bf5 22. Bd1 g5 23. Kf2 g4 24. Nc3 gxf3 25. gxf3
Rg8 26. Ne2 h4 27. Nf4 Nh7 28. Rxa5 Rxa5 29. Rxa5 Ng5 30. Ra7+ Kd6 31. Be2 Rb8
32. Bd3 $1 {[%cal Rd3f5]} Bd7 33. Bc2 Re8 34. Bd3 (34. b4 $16) 34... Rb8 $1 $14
35. Bc2 (35. Ra3 $14) 35... Re8 $1 $16 36. Ng2 Nh3+ 37. Kf1 Ng5 38. Kf2 ({
But not} 38. Nxh4 $6 Rxe3 39. Bf5 Be6 $11) 38... Nh3+ 39. Kf1 Ng5 40. Ke2 ({
Much worse is} 40. Nxh4 $6 Rxe3 41. Bf5 Be6 $11) 40... Ne6 {...Nxd4+ is the
strong threat.} 41. Kf2 Nc7 42. Bd3 Rb8 43. Bc2 ({White should try} 43. Ra3 $16
) 43... Rg8 (43... Re8 $1 $11) 44. Nf4 Nb5 45. Ra1 Rb8 46. Ng2 Nc7 47. Bd1 Nb5
48. Ra6 Nc7 49. Ra5 Rg8 50. Bc2 Nb5 (50... h3 $14 51. Ne1 Be6) 51. Nxh4 Rh8 52.
Kg3 Rg8+ 53. Kf2 {Threatens to win with Ng2.} Rh8 54. Kg3 Rg8+ $1 55. Kf4 Rh8
56. Nf5+ Bxf5 57. Bxf5 {Hoping for h3.} Rxh2 {[%mdl 4096] Endgame KRB-KRN} 58.
Ra8 Rb2 59. Rf8 (59. Rb8 {is more complex.} Kc7 60. Rc8+ Kd6 61. Rd8+ Ke7 62.
Rd7+) 59... Ke7 60. Rc8 Kd6 61. Rd8+ Ke7 62. Rd7+ $1 Kf8 63. Bg4 Ke8 64. Rb7 {
And now Bd7+ would win.} Nd6 (64... Kd8 $16 65. Rxf7 Rxb3) 65. Rc7 {Black must
now prevent Ke5.} Rxb3 {Black hopes to continue with ...Nc4.} 66. Rxc6 Nc4 (
66... Nb5 {was called for.} 67. Rc5 Nc3) 67. Rc8+ $1 $18 Ke7 68. Rc7+ $1 Ke8 {
[#]} 69. Rc8+ $2 (69. Bh5 $1 $18) 69... Ke7 $16 70. Rc7+ $2 (70. e4 $16) 70...
Ke8 $1 $18 {[#] White now steadily converts the win.} 71. Bh5 $1 Nxe3 72. Rxf7
{aiming for Rb7+.} Kd8 73. Ke5 Rb1 74. Bg4 Rb6 $2 (74... Ke8 75. Rh7 Nxg4+ 76.
fxg4 Rb2) 75. Be6 Nc4+ 76. Kxd5 Rd6+ 77. Kxc4 Rxe6 {KR-KR} 78. Kd5 Rh6 79. f4
Ke8 80. Ra7 Rh5+ 81. Ke6 {[%cal Ra7a8]} Rh6+ 82. Ke5 Rh1 83. f5 Re1+ 84. Kf6
Rd1 85. Ra8+ Kd7 86. Kg7 {Weighted Error Value: White=0.18/Black=0.08} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.29"]
[White "Praggnanandhaa R"]
[Black "Mamedov, Rauf"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2618"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "127"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,127,0,2,0,13,18,36,29,23,27,48,21,24,14,27,26,28,19,29,14,21,2,17,11,
45,44,45,39,47,44,47,37,59,14,84,75,104,97,143,132,174,169,245,191,273,145,158,
143,241,238,239,221,244,238,302,268,282,256,230,225,234,230,242,196,254,243,
313,289,305,308,293,139,230,225,268,158,152,148,159,156,158,137,241,177,256,
236,263,227,268,252,346,356,325,299,302,289,1183,297,310,311,313,223,223,223,
223,223,223,213,223,217,360,347,454,448,440,440]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6
4. O-O Bg7 5. c3 Nf6 6. Re1 O-O 7. h3 Qb6 8. a4 {B31: Sicilian: 2...Nc6 3 Bb5
g6.} a6 {8...Rd8 gains popularity.} 9. Bc4 {[#]} e5 $146 ({Predecessor:} 9...
Rd8 10. e5 Ne8 11. d3 d5 12. exd6 Nxd6 13. Ba2 Bf5 14. Qe2 e5 15. Ng5 h6 {
1-0 (32) Sekyrka,J (1990)-Ohera,D (1960) ICCF email 2016}) 10. d3 {White is
slightly better.} d6 11. Na3 Rb8 12. Ba2 Qc7 13. Bg5 b5 14. axb5 axb5 15. Nc2
Ne7 16. Ne3 Bb7 17. Qd2 {And now Bxf6 would win.} Kh8 18. b4 Nfg8 19. bxc5 dxc5
20. Rab1 Qd7 21. Ng4 f6 22. Bh4 $36 {[%mdl 2048] White fights for an advantage.
} Ra8 23. Rbd1 h5 (23... Nc6 $11 {keeps the balance.}) 24. Ne3 $16 Ra6 25. Qe2
Rfa8 {[#]} 26. Bb1 Qe8 27. d4 c4 (27... cxd4 $142 28. cxd4 Ra4) 28. Qb2 Ra3 (
28... g5 $142) 29. Bc2 (29. dxe5 $18 fxe5 30. Nd5) 29... Ra2 30. Qb1 R2a3 (
30... Nc6 $16 31. Qxb5 Nxd4 32. Nxd4 (32. Qxb7 Nxc2 33. Nxc2 Rxc2 $11) 32...
exd4 33. Qxe8 (33. Qxb7 dxe3 34. Rd7 exf2+ 35. Bxf2 Rb8 $11) 33... Rxe8) 31.
dxe5 $18 fxe5 32. Qb4 Ra2 33. Bg3 Nc8 34. Qc5 Qc6 35. Qxc6 Bxc6 36. Nxe5 Nce7
37. f4 Be8 38. Bh4 Nf6 (38... Bh6 $142) 39. Bb1 Ra1 40. Nc2 R1a6 41. Nb4 Ra1
42. Rd6 (42. Kh2 $18) 42... Neg8 (42... g5 $16) 43. Nd5 g5 44. Nxf6 ({And not} 
44. fxg5 Nxd5 45. Rxd5 Ne7 $11) (44. Bxg5 $18 Nxe4 45. Re6) 44... Nxf6 $16 45.
Bxg5 Nxe4 46. Rxe4 Rxb1+ 47. Kh2 Kh7 (47... Kg8 $16 48. Bf6 Bf8) 48. Re6 Bf8 (
48... Rba1 $142 49. f5 R1a6) 49. Be7 Bh6 50. Bf6 Rf1 51. Kg3 b4 52. cxb4 c3 53.
Re7+ Kg8 54. Rc7 Ra6 $2 {[#]} (54... Rd1 55. Rxc3 Rd6) 55. Bg5 $2 (55. Ng4 $1 {
[%mdl 512]} h4+ 56. Kxh4) 55... Bxg5 $18 56. fxg5 Re6 57. Rxc3 Rf5 58. Rce3 {
aiming for Ng4.} Rxg5+ 59. Kh2 {Hoping for Nf3.} Rf5 60. Nc4 Rxe4 61. Rxe4 Bd7
(61... Bf7 $142 62. Nd6 Rg5) 62. Re5 Rf4 63. Nb6 Bc6 64. Nd5 {Weighted Error
Value: White=0.32/Black=0.33} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.30"]
[White "Anton Guijarro, David"]
[Black "Bjerre, Jonas Buhl"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2658"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,99,0,-1,0,-23,20,4,28,31,31,33,29,0,29,23,14,0,19,0,0,0,20,24,43,13,
13,-2,-10,-11,-12,-5,-9,-7,7,6,9,0,0,0,51,59,61,61,57,65,51,37,37,40,25,33,39,
33,53,52,59,37,156,151,165,168,232,213,250,208,257,252,313,300,412,396,404,412,
412,398,404,411,373,354,414,454,516,487,775,760,1449,1325,931,761]} 1. d4 Nf6
2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+ Nc6 6. a3 Bxc3+ 7. bxc3 Ne4 {D38:
Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 8. Bf4 $1 {[%mdl 4] now
scores much better than the old 8.Qc2.} O-O 9. e3 Nxc3 {The position is equal.}
10. Qc2 Ne4 11. Bd3 f5 {[#]} 12. h4 $146 ({Predecessor:} 12. O-O Nd6 13. cxd5
exd5 14. Rab1 Ne7 15. Qc5 b6 16. Qc2 Bb7 17. Rfc1 Rc8 18. Qa2 {1-0 (42) Kobo,O
(2460)-Bluebaum,M (2670) Chess.com INT 2021}) 12... Na5 13. cxd5 Qxd5 14. Qxc7
Bd7 15. O-O Rac8 (15... Rfc8 $5 16. Qe5 $8 Nc4 17. Qxd5 exd5 $14) 16. Qe5 Nb3
17. Rab1 Rc3 18. Rfd1 {Threatening Bxe4.} (18. Bxe4 $5 fxe4 19. Ng5 $14) 18...
Bc6 19. Rb2 Rc8 20. h5 h6 21. Nh4 Nf6 22. Be2 Qxe5 23. Bxe5 Bd5 24. Ng6 {
Black must now prevent Ne7+.} Kf7 25. Nf4 a6 (25... b6 $1 $11) 26. a4 Na5 27.
Bxf6 Kxf6 28. Nxd5+ exd5 29. Bf3 Ke6 30. Rdb1 Rc1+ 31. Kh2 Rxb1 32. Rxb1 $14 {
[%mdl 4096] Endgame KRB-KRN} Rc7 33. Kg3 Nc4 34. Kf4 Rf7 {[#] Black is now
going downhill.} (34... b5 $14) 35. Be2 $1 $16 Rc7 {[#]} 36. Bd3 $1 Nd6 (36...
Na5 $142 37. Bxf5+ Kd6) 37. Rb6 $18 Rf7 38. f3 Rf8 39. a5 Rf7 40. g3 Rf8 41. g4
fxg4+ 42. Kxg4 Kd7 43. e4 Kc7 44. e5 Nc8 45. Rg6 Rg8 {Now ...Ne7 and Black
clings on.} 46. Re6 Rd8 {White is clearly winning.} 47. Bf5 Rf8 (47... b6 $142
48. Rg6 bxa5 49. Rxg7+ Kc6 50. Rg6+ Kb7 51. Rxh6 a4 52. Rh7+ Kc6) 48. Rg6 Rf7
49. Bxc8 Kxc8 50. f4 {Weighted Error Value: White=0.05/Black=0.27} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.31"]
[White "Henriquez Villagra, Cristobal"]
[Black "Volokitin, Andrei"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "2608"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,82,30,50,17,30,23,36,39,34,30,29,29,64,13,29,32,35,0,0,0,5,0,0,0,-5,
-4,-15,-5,-22,-36,0,0,0,21,17,-115,-129,-128,-125,-169,-169,-169,-165,-163,
-166,-168,-160,-167,-160,-179,-182,-174,-172,-185,-197,-268,-220,-261,-265,
-327,-264,-562,-614,-649,-583,-1052,-1006,-4914,-2667,-1753,-321,-321,-314,
-298,-286]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 c5 6. Rc1 {
D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} Nc6 7.
dxc5 Bg7 8. Nf3 {White is slightly better.} O-O {[#]} 9. Qa4 $146 ({
Predecessor:} 9. e3 Ndb4 10. a3 Nd3+ 11. Bxd3 Qxd3 12. Qe2 Bf5 13. e4 Qxe2+ 14.
Kxe2 Bg4 15. Be3 {0-1 (39) Abdusattorov,N (2648)-Giri,A (2777) Yasnaya Polyana
2021}) 9... Be6 10. a3 a5 11. Nd1 (11. e3 $14) 11... Qd7 12. e4 Nc7 13. h3 Rfd8
14. Be2 Ba2 15. Nc3 Qe6 16. Nxa2 Qxa2 17. O-O {Threatens to win with Bc4.} Bxb2
18. Qc2 {aiming for Bc3.} Qxa3 19. Rb1 Bg7 20. Rxb7 Ne6 {White must now
prevent ...Ncd4.} 21. Be3 Bd4 22. Bb5 ({Much worse is} 22. Nxd4 Ncxd4 23. Qb2
Qxb2 $17) (22. Rb3 $11 {remains equal.} Qxc5 23. Qxc5 Nxc5 24. Rb6) 22... Bxe3
$17 {Black continues to play with concentration.} 23. Bxc6 {Rb3 is the strong
threat.} Qxc5 24. Qa4 {[#]} Nd4 $1 25. Nxd4 Bxd4 ({Much less strong is} 25...
Rxd4 26. Qb5 $11) 26. Bd5 {next Rb5 is good for White.} Rab8 27. Bxf7+ Kg7 28.
Rxb8 Rxb8 29. Bd5 {[#]} Bxf2+ $1 {[%mdl 512]} 30. Kh1 Rf8 31. Qd1 Rf6 32. e5 (
32. Qd3 $142) 32... Rf8 33. Bf3 Bg3 34. e6 Rf6 35. Qe2 $2 (35. Qc1 Qxc1 36.
Rxc1) 35... a4 $19 {[%cal Ba5a4,Ba4a3][%mdl 32]} 36. Qa2 a3 37. Qb3 Bd6 38. Rd1
Qe5 {[%csl Gd6][%cal Re5h2]} 39. Kg1 Qxe6 $2 (39... Rxe6 40. Qc4 a2 41. Qxa2
Qh2+ 42. Kf1 Re5) 40. Qxe6 Rxe6 41. Ra1 Re5 {Weighted Error Value: White=0.58/
Black=0.22} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.32"]
[White "Demchenko, Anton"]
[Black "Kollars, Dmitrij"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2651"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,112,12,16,26,13,11,0,16,2,16,8,14,7,0,0,0,0,0,0,17,13,23,16,22,17,21,
17,31,17,31,13,20,5,18,16,10,0,0,0,27,-47,0,-27,0,-87,-60,-146,-139,-141,-113,
-188,-163,-159,-101,-112,-65,-65,-45,-167,-104,-99,-108,-103,-95,-91,-81,-77,
-80,-116,-119,-111,-103,-70,0,-42,-18,-4,-14,0,0,0,0,0,0,0,0,0,0,-118,-127,
-204,-195,-162,-156,-225,-176,-477,-452,-1072,-528,-29973,-29971,-29970,-12837]
} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O d6 6. c3 a5 {C54: Giuoco
Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 7. Nbd2 O-O 8. h3 h6 {The
position is equal.} 9. Re1 Be6 10. Bxe6 fxe6 11. Nb3 Bb6 12. a4 Qe8 13. Be3 {
[#]} Bxe3 $146 ({Predecessor:} 13... Qg6 14. Nh4 Qf7 15. Bxb6 cxb6 16. d4 Nh5
17. Qd2 Nf4 18. dxe5 dxe5 19. Re3 Qh5 {1/2-1/2 (40) Luchkina,A-Chulevich,A
Dagomys 2009}) 14. Rxe3 Qg6 15. Nbd2 Nh5 16. Kh2 Qf7 17. Qb3 Rab8 18. Rf1 Kh8
19. g3 Nf6 20. d4 Nd7 21. Qb5 exd4 22. cxd4 Nb6 23. b3 g5 24. Kg2 Qg7 25. e5 (
25. Rd1 $1 $11) 25... d5 26. Qd3 Nc8 27. h4 (27. Nh2 $11 {remains equal.})
27... g4 $17 28. Ng1 (28. Ne1 $1 $15) 28... N8e7 $36 {[%mdl 2048] Black is
really pushing.} 29. Ree1 Qh7 30. Qc3 (30. Qxh7+ $17 Kxh7 31. Ne2) 30... Rf7 $1
$19 31. Ne2 Rbf8 (31... Nb4 $142 $1 32. f4 (32. Qxc7 $2 Nec6 $19) 32... Qd3 33.
Qxd3 Nxd3) 32. f3 Qg6 33. f4 Nf5 34. Rh1 (34. Nb1 $15) 34... h5 ({Better is} 
34... Rc8 $19 35. Nf1 Nb4) 35. Nf1 $17 Nb4 36. Rd1 b6 37. Ne3 Rc8 38. Nxf5 Qxf5
39. Qd2 {[#]} c5 $1 40. dxc5 {next Nd4 is good for White.} bxc5 41. Nc3 {
White wants to play Nb5.} Nc6 (41... c4 $1 $15 42. bxc4 Rxc4) 42. Nb5 {And now
Nd6 would win.} (42. Rhe1 $5 {[%cal Rc3b5]}) 42... Qe4+ $1 43. Kh2 Nd4 {
( -> ...Nf3+)} 44. Rhf1 Nf3+ 45. Rxf3 $1 Qxf3 46. Nd6 {[%mdl 64] Double Attack}
Rcc7 {...Rf8 is the strong threat.} 47. Nxf7+ Rxf7 $11 {[%mdl 4096] Endgame
KQR-KQR} 48. Rc1 Rb7 49. Rc3 (49. Qxa5 $11 {keeps the balance.} Qe2+ 50. Kh1
Qf3+ 51. Kh2 Rxb3 52. Qd8+ Kh7 53. Qe7+ Kh8 54. Qf8+ Kh7 55. Qf7+ Kh8 56. Qxh5+
Kg7 57. Qg5+ Kh7 58. Qh5+ Kg7 59. Qg5+ Kh7 60. Qh5+ Kg7) 49... Qf1 $17 50. f5 (
50. Qg2 $17 {was called for.} Qe1 51. Rxc5) 50... Qxf5 $19 ({Stronger than} 
50... exf5 51. Qxd5 Qe2+ 52. Qg2 $11) 51. Rxc5 {[#] White wants to mate with
Qh6+.} Kh7 ({Don't go for} 51... Qxe5 $2 52. Qh6+ Kg8 53. Rc8+ (53. Qg6+ Kf8
$11) 53... Kf7 54. Qh7+ Qg7 55. Rh8 $18) 52. Qe3 (52. Rc3 $17 {was necessary.})
52... Rf7 {Threatens to win with ...Qf1.} 53. Qe1 (53. Rc1) 53... Qd3 54. Kg2 (
54. Rc1 $142 Rf3 55. Rd1 Qxb3 56. Rd2) 54... Qxb3 (54... Rf3 $142 {Hoping for .
..Re3.} 55. Rc7+ Kg6) 55. Rxa5 Rc7 56. Qf1 Qb2+ {Weighted Error Value: White=0.
50/Black=0.18} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.33"]
[White "Neiksans, Arturs"]
[Black "Bluebaum, Matthias"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2570"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,112,-16,9,-6,5,-15,-20,-11,-16,-18,-15,-33,-33,-38,-16,-14,0,-16,-11,
-21,0,-17,-18,-30,-21,-52,-52,-46,-53,-122,-90,-102,-52,-50,-60,-72,-79,-77,
-64,-121,-103,-167,-157,-187,-156,-154,-137,-131,-140,-211,-184,-233,-223,-237,
-221,-276,-227,-269,-269,-287,-284,-280,-272,-290,-289,-289,-280,-277,-279,
-258,-261,-325,-327,-622,-939,-1016,-785,-677,-631,-12831,-12831,-12832,-12832,
-12833,-12831,-12840,-12840,-12841,-12840,-12841,-12842,-12842,-12843,-12844,
-12844,-12845,-12845,-12850,-12845,-12850,-12846,-12850,-27999,-27999,-27999]} 
1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Be7 5. g3 a5 6. Bg2 {C00: French: Unusual
White 2nd moves.} a4 7. a3 c5 8. O-O {The position is equal.} Nc6 9. Re1 h6 10.
Qe2 {[#]} O-O $146 ({Predecessor:} 10... b6 11. e5 Nd7 12. c4 Nf8 13. h4 Bb7
14. Nf1 Na5 15. Be3 Qc7 16. Rad1 Bc6 {1-0 (42) Wohl,A (2375)-Wilschut,P (2237)
Leiden 2010}) 11. e5 Nh7 12. Nf1 Ng5 13. c3 Nxf3+ 14. Qxf3 Bg5 15. Qh5 Bxc1 16.
Raxc1 Rb8 17. f4 b5 18. Nd2 Ne7 19. g4 ({Better is} 19. Qf3 $15) 19... Ng6 20.
Rf1 Qh4 21. Qxh4 Nxh4 22. b4 axb3 $1 23. Nxb3 {[#]} c4 $36 {[%cal Rc4b3][%mdl
2048] Black fights for an advantage.} 24. Nc5 ({White should try} 24. dxc4 $15
bxc4 25. Nd4) 24... cxd3 25. Rf2 (25. Rb1 $17 {was necessary.}) 25... Ra8 $19
26. Ra1 Ra7 27. Nxd3 Rc7 28. Rc1 Bd7 29. Nb4 (29. Rb2 $17 {keeps fighting.})
29... Rfc8 30. Bf1 Ra7 31. Bd3 Rxa3 32. Rfc2 Ng6 33. Bxg6 fxg6 34. f5 gxf5 ({
Don't take} 34... exf5 35. Nxd5 Rc4 36. gxf5 $19) 35. gxf5 exf5 36. Nxd5 Rc5
37. Rd2 {[#] And now Ne7+ would win.} Be6 38. Nf4 Rxe5 39. Nxe6 Rxe6 {[%mdl
4096] Endgame KRR-KRR} 40. Rd5 f4 41. Rxb5 $2 (41. Rf5) 41... Ra2 42. Rf5 Rg6+
43. Kh1 Rgg2 44. Rxf4 Rxh2+ 45. Kg1 h5 46. c4 Kh7 47. Rf8 h4 48. Rc3 Rag2+ 49.
Kf1 Rc2 50. Rxc2 Rxc2 {KR-KR} 51. Rc8 h3 {( -> ...h2)} 52. Kg1 g5 53. Rd8 Kg6
54. c5 g4 55. c6 Rxc6 56. Kh2 Rc2+ {Weighted Error Value: White=0.34/Black=0.06
} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.34"]
[White "Kuybokarov, Temur"]
[Black "Matlakov, Maxim"]
[Result "1/2-1/2"]
[ECO "B97"]
[WhiteElo "2549"]
[BlackElo "2682"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,60,0,0,0,22,22,25,22,22,15,30,0,0,0,0,0,0,0,0,0,0,0,0,0,22,29,14,18,
18,17,41,46,36,30,19,0,0,0,26,0,0,0,28]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4
Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Rb1 Qa3 10. f5 Nc6 11. fxe6 {
B97: Sicilian Najdorf: Poisoned Pawn.} Bxe6 12. Rxb7 Nxd4 13. Qxd4 {White has
an edge.} Be7 $1 14. Bc4 {[#] Black must now prevent 0-0.} Rc8 {[#]} 15. Bxe6
$146 (15. Nd5 {looks sharper.} Bxd5 16. Bxd5 Nxd5 17. Qxd5 Qc3+ 18. Ke2) ({
Predecessor:} 15. Nd5 Bxd5 16. Bxd5 Nxd5 17. Qxd5 Qc3+ 18. Ke2 Qxc2+ 19. Bd2
Rc5 20. Rc1 Qxc1 21. Bxc1 Rxd5 22. exd5 {1/2-1/2 (40) Nepomniachtchi,I (2789)
-Giri,A (2776) chess24.com INT 2021}) 15... fxe6 16. Bd2 Qc5 17. Qxc5 Rxc5 18.
Ke2 Kf7 {White should prevent ...Rhc8.} 19. Rhb1 Rhc8 20. R1b3 Rc4 21. Ra7 Nxe4
22. Nxe4 Rxe4+ 23. Kf3 Re5 24. Rbb7 Rf5+ 25. Ke2 Re8 26. Rxa6 Re5+ 27. Kd3 Rd5+
28. Ke2 Re5+ 29. Kd3 Rd5+ 30. Ke2 Re5+ {Weighted Error Value: White=0.04/
Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.35"]
[White "Gelfand, Boris"]
[Black "Zvjaginsev, Vadim"]
[Result "1/2-1/2"]
[ECO "E91"]
[WhiteElo "2680"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,67,33,34,43,75,65,58,56,102,113,128,86,82,76,76,61,96,104,106,72,77,
108,112,91,88,94,101,89,93,76,81,87,84,50,41,40,97,103,106,93,78,76,86,80,86,
86,94,43,32,0,0,0,0,0]} 1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Be2
O-O 7. Nf3 e6 8. O-O Re8 9. h3 {E91: King's Indian: Classical: 6 Be2, unusual
replies including 6...c5 and 6...Bg4.} h6 10. Bf4 exd5 11. exd5 {[#] White is
slightly better.} g5 $146 ({Predecessor:} 11... Ne4 12. Nxe4 Rxe4 13. Qd2 Qf6
14. Be3 Qxb2 15. Qxb2 Bxb2 16. Rae1 Bg7 17. Bd3 Re8 18. Bf4 {1-0 (49) Gaspar,A
(2180)-Bernardez Duran,T Mondariz 1996}) 12. Bh2 Na6 13. Nb5 Bf8 14. Re1 Nc7
15. Nc3 Bf5 16. Bd3 Qd7 17. Qc2 Bxd3 18. Qxd3 Rxe1+ 19. Nxe1 Rb8 20. Nc2 b5 {
Black wants to play ...bxc4.} 21. Ne3 bxc4 22. Nxc4 Nb5 23. Nxb5 Qxb5 24. Rd1
Qa6 25. a3 Nd7 ({Better is} 25... Qb5 $14) 26. h4 Nb6 27. Nxd6 Qxd3 28. Rxd3
Rd8 29. Ne4 f5 30. Nf6+ Kf7 {[#]} 31. hxg5 ({White should play} 31. Bc7 $1 $16
{[%cal Rc7d8]} Ra8 32. Bxb6 axb6 33. Nd7) 31... c4 $14 32. Rd1 {And now Bc7
would win.} Bd6 33. Bxd6 Rxd6 34. f4 {Weighted Error Value: White=0.13/Black=0.
08} (34. gxh6 $2 Kxf6 35. Re1 Rxd5 $19) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.36"]
[White "Ivic, Velimir"]
[Black "Cheparinov, Ivan"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2606"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,83,0,-15,-18,-41,-28,-47,-23,0,0,0,6,0,0,6,8,17,19,9,6,9,0,24,15,26,
19,70,77,79,48,62,52,89,85,85,91,129,143,132,133,162,169,273,179,127,97,97,97,
97,97,98,102,143,142,181,191,279,295,322,337,289,330,531,533,582,584,597,585,
562,570,567,565,541,527]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6
6. Rg1 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 7. a4 $5 {[%mdl 4] Leaves trodden
paths. B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.}
b4 8. Nd5 {[#]} Nxd5 $146 ({Predecessor:} 8... Nxe4 9. Bc4 e6 10. Qe2 Nc5 11.
c3 Be7 12. Nxe7 Qxe7 13. cxb4 Ncd7 14. Bd2 Ne5 {1-0 (24) Vachier Lagrave,M 
(2784)-Ding,L (2791) chess24.com INT 2021}) 9. exd5 {Black is slightly better.}
Bb7 10. Nf5 Qc7 11. Ne3 Nd7 {[%cal Bb8d7,Bd7f6,Bf6e4,Be4c3][%mdl 32]} 12. a5
Nf6 13. Qd4 Qc5 14. Qxc5 dxc5 15. Bc4 O-O-O 16. b3 g6 17. g4 Ne4 18. Bb2 Bh6 (
18... Rg8 $1 $11) 19. Bxh8 $14 Rxh8 20. Rd1 Bf4 21. h4 Be5 22. f3 Nc3 23. Rd3
h5 24. gxh5 Rxh5 25. Rg5 Rxg5 26. hxg5 Bd4 (26... Bg3+ {keeps fighting.} 27.
Kf1 Kd7) 27. f4 Kd7 28. Ng4 {And now Ne5+ would win.} Nxd5 29. Ne5+ Kc7 30.
Bxd5 ({Reject} 30. Nxf7 $6 Nxf4 31. Rg3 Bc3+ 32. Kf2 Bd4+ 33. Ke1 Bc3+ 34. Kd1
e5 $11) 30... Bxd5 $16 {[%mdl 4096] Endgame KRN-KB} 31. Rh3 $1 Kd6 {[#]} 32.
Rh8 $1 Ke6 33. Rc8 f6 (33... Be3 $142 34. Nd3 Kd7 35. Rxc5 Be6) 34. Nxg6 $18
fxg5 35. fxg5 Be4 {[#]} 36. Nf8+ Kf5 $2 (36... Kd6 37. Rd8+ Kc6) 37. Kd2 {
White is clearly winning.} Bd5 38. Nd7 Be6 39. Rc7 c4 40. bxc4 Kxg5 41. Nb8
Bc3+ 42. Kc1 {Weighted Error Value: White=0.06/Black=0.25} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.37"]
[White "Jumabayev, Rinat"]
[Black "Onyshchuk, Volodymyr"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2658"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,92,53,34,90,65,87,85,115,120,103,108,123,70,77,79,99,75,57,61,61,62,
70,71,77,89,122,122,110,117,111,110,119,95,118,108,173,176,215,142,176,123,121,
133,131,-114,-104,-170,-84,-241,-233,-227,-233,-238,-228,-231,-225,-216,-208,
-766,-76,-2171,-1807,-5097,-5106,-5061,-5081,-5065,-5061,-29977,-29978,-29978,
-29974,-29977,-29978,-29978,-29979,-29979,-29980,-29987,-29988,-29988,-29989,
-29997,-29998]} 1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. Be3 c6 5. Qd2 Nd7 6. Nf3 h6 {
B06: Modern Defence.} (6... Ngf6 $14) 7. h3 a6 8. a4 {[%cal Ba2a4,Ba4a5][%mdl
32] [#]} e6 $146 {White is better.} ({Predecessor:} 8... b6 9. Ne2 Ngf6 10. Ng3
h5 11. Bd3 Qc7 12. c3 Bb7 13. Nh4 Nh7 14. O-O Bf6 {1-0 (54) Todorov,T (2499)
-De Santis,A (2321) Senigallia 2007}) 9. a5 Ne7 10. Bd3 g5 11. h4 (11. O-O $16)
11... g4 $14 12. Nh2 h5 13. Nf1 c5 14. dxc5 dxc5 15. f4 gxf3 16. gxf3 Nc6 17.
f4 Nd4 18. Qg2 Nf6 19. e5 (19. Qxg7 $6 Rg8 $11) 19... Ng4 20. Ne4 Bf8 21. Bxd4
cxd4 22. Nfg3 {Nxh5! is the strong threat.} f5 (22... Bb4+ $16 23. Ke2 Ne3) 23.
exf6 $1 $18 Qd5 24. Rg1 e5 25. f5 (25. Ng5 $18 Bb4+ 26. c3 Qxg2 27. Rxg2 dxc3
28. O-O-O) 25... Ne3 $16 26. Qf3 Bd7 27. Nxh5 $2 (27. Ng5 $1 $16) 27... O-O-O
$1 $17 28. Rg5 {[#]} (28. Kf2 $17) 28... Bh6 (28... Kb8 $1 $19 {and Black
stays clearly on top.} 29. Nd2 Qf7) 29. f7 $2 (29. Ng7 $17 {keeps fighting.})
29... Bxg5 $19 30. hxg5 {Hoping for Nhf6.} Bxf5 {And now ...Bg4 would win.} 31.
Nd6+ Qxd6 32. Bxf5+ Kb8 33. g6 Qb4+ 34. Ke2 $2 (34. Kf2 Qd2+ 35. Qe2 Qxe2+ 36.
Kxe2 Nxf5 37. Nf6) 34... Qxb2 $2 (34... Nxf5 $19 35. Qxf5 d3+ 36. Kf3 {[#]}
Rxh5 $1 {[%mdl 576] Remove Defender, Deflection} 37. Qxh5 Qf4+ 38. Kg2 dxc2)
35. Re1 $2 {[%mdl 8192]} (35. Rd1 $17) 35... Nxf5 36. Qxf5 d3+ $1 {[%mdl 64]
Double Attack} 37. Kf3 dxc2 38. g7 Qc3+ 39. Kg4 Qxe1 {Black mates.} (39... Rd4+
40. Kg5 $11) 40. gxh8=Q Qd1+ (40... Rxh8 41. f8=Q+ Rxf8 42. Qxf8+ Kc7 43. Qc5+
Kb8 44. Qxc2 $11) 41. Kh3 Qh1+ ({Worse is} 41... Rxh8 42. Qxe5+ Ka7 43. Qc5+
Kb8 44. Qe5+ Ka7 45. Qc5+ Kb8 46. Qe5+ $11) 42. Kg4 Qg1+ ({And not} 42... Rxh8
43. Qxe5+ Ka7 44. Qc5+ (44. Qd4+ b6 $11) 44... b6 45. axb6+ Ka8 46. f8=Q+ $14)
43. Kh3 Rxh8 44. Qxe5+ Ka7 45. Qxh8 c1=Q 46. f8=Q Qce3+ {Weighted Error Value:
White=0.72/Black=0.23} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.38"]
[White "Sadhwani, Raunak"]
[Black "Rakhmanov, Aleksandr"]
[Result "1-0"]
[ECO "E70"]
[WhiteElo "2609"]
[BlackElo "2657"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,91,54,48,56,51,55,62,72,59,75,59,69,61,77,37,63,60,58,27,25,29,29,24,
17,22,36,44,53,40,64,53,59,27,29,29,27,10,0,0,0,0,0,7,47,47,69,0,98,104,120,
120,148,140,138,131,131,125,311,272,299,272,252,241,272,270,327,356,601,555,
897,888,823,819,687,696,633,606]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5.
d4 c6 6. Be2 d5 7. e5 Ne4 {7...Ne8 is more advanced technology.} 8. O-O Nxc3 9.
bxc3 dxc4 {E70: King's Indian: Miscellaneous lines with 4 e4, including 5 Nge2
and 5 Bd3 0-0 6 Nge2.} 10. Bxc4 c5 11. dxc5 $5 {[%mdl 4] An interesting side
line.} Qxd1 {White is slightly better.} 12. Rxd1 Nc6 {[#]} 13. Bd5 $146 ({
Predecessor:} 13. Rb1 Bxe5 14. Nxe5 Nxe5 15. Be2 Nc6 16. Bg5 Kg7 17. Bf3 f6 18.
Bf4 Rd8 19. Bd5 {0-1 (57) Laznicka,V (2674)-Rakhmanov,A (2591) Dubai 2013})
13... Rd8 14. Bf4 Bf5 15. Rd2 h6 16. Rad1 g5 17. Bg3 (17. Bxc6 {feels hotter.}
Rxd2 18. Bxd2 bxc6 19. Nd4 Be4 20. f4) 17... e6 18. Bxc6 Rxd2 19. Nxd2 bxc6 20.
Nc4 Rb8 21. f3 Bf8 22. Bf2 $1 Bc2 23. Rc1 Ba4 24. g4 Rb5 25. Nd6 Rb2 26. h4 Bc2
27. hxg5 Rxa2 28. Be3 hxg5 29. Bxg5 Bh7 30. Rd1 a5 31. Bf6 ({Better is} 31. Nb7
$1 $14 Rb2 32. Nxa5 Bxc5+ 33. Kh1) 31... Rb2 (31... Bc2 $1 $11 {keeps the
balance.} 32. Rd2 Bb3) 32. Rd4 $16 Bc2 {[#]} 33. Nc4 $1 {[%csl LRa5,LRb2]
Strongly threatening Rd8.} Rb8 {[#]} 34. Rd2 $1 {[%cal Rd2c2]} ({Inferior is} 
34. Nxa5 Bxc5 35. Nxc6 Rb3 $17) 34... Bxc5+ 35. Kg2 Bg6 {next ...a4 is good
for Black.} 36. Nxa5 Rc8 $2 {This move loses the game for Black.} (36... Be3
$16 37. Ra2 (37. Nxc6 Bxd2 38. Nxb8 Bxc3 $14) 37... Bb1) 37. Rd6 Bc2 38. Nb7 ({
Less strong is} 38. Rxc6 Rxc6 39. Nxc6 Kf8 $16) 38... Be3 39. Kg3 c5 40. Rd7
Ra8 41. Nd8 Ra1 $2 (41... Ba4 42. Rc7 Be8) 42. Rxf7 {White is clearly winning.}
Bb3 43. Rg7+ Kf8 44. Rh7 {[%cal Rh7h8]} Ke8 45. Nb7 {White wants to mate with
Nd6+.} Rg1+ 46. Kh2 {Weighted Error Value: White=0.09/Black=0.27} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.39"]
[White "Cori, Jorge"]
[Black "Sethuraman, S.P.."]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2655"]
[BlackElo "2620"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,76,0,0,-16,-15,-19,-20,-20,-21,-38,-25,-29,12,-1,0,-12,-8,-20,0,-22,
-24,-25,-24,-14,-15,-43,-50,-47,-53,-54,-51,-56,-58,-57,-52,-52,-45,-53,-41,
-63,-58,-65,-50,-56,-48,-80,-70,-61,-46,-129,-121,-129,-114,-129,-129,-128,
-114,-130,-130,-146,-142,-153,-103,-127,-118]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4.
Nc3 Bb4 5. e3 O-O 6. Bd2 b6 7. cxd5 exd5 8. a3 {E51: Nimzo-Indian: Rubinstein:
4...0-0 5 Nf3 d5.} Bd6 9. Nb5 Be7 10. Rc1 {[#] The position is equal.} c5 $146
({Predecessor:} 10... c6 11. Nc3 Bb7 12. Ne5 c5 13. Bd3 Nc6 14. Nxc6 Bxc6 15.
O-O c4 16. Bb1 b5 {1/2-1/2 (46) Gareyev,T (2606)-Alekseev,E (2626) Chess.com
INT 2020}) 11. Be2 Bb7 12. O-O Ne4 (12... a6 $5 13. Nc3 $8 Nbd7 $11) 13. dxc5
bxc5 14. Qc2 Nd7 {[%cal Bb8d7,Bd7f6,Bf6e4][%mdl 32]} 15. Rfd1 Nxd2 16. Rxd2 Nf6
17. Nc3 Qb6 18. Na4 {[%mdl 64] [#] Double Attack} Qa5 19. Nxc5 Qxc5 20. Qxc5
Bxc5 21. Rxc5 {Black must now prevent Rc7.} Ne4 $1 {[%csl LRc5,LRd2][%mdl 64]
Double Attack} 22. Rcc2 Nxd2 23. Rxd2 Rac8 24. Nd4 Rc1+ 25. Bd1 g6 26. h4 h5
27. Kh2 Rd8 28. Kg3 Kg7 29. a4 Kf6 30. b4 Rdc8 31. a5 (31. b5 $15) 31... Rb1
$17 32. b5 {[#]} a6 $1 33. Be2 axb5 34. Bxb5 Ra1 35. Rb2 Rxa5 36. Be2 {Rb6+ is
the strong threat.} Rc7 37. Kf4 Kg7 38. g4 hxg4 {Weighted Error Value: White=0.
09/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.40"]
[White "Niemann, Hans Moke"]
[Black "Ter-Sahakyan, Samvel"]
[Result "1/2-1/2"]
[ECO "E36"]
[WhiteElo "2638"]
[BlackElo "2607"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,96,11,4,9,3,13,16,9,21,0,12,28,0,0,0,44,33,31,42,42,37,36,31,35,20,
16,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,13,0,9,-107,-103,-103,
-83,-93,-58,-54,0,0,0,0,0,-6,-3,-2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2.
c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 O-O 7. Nf3 b6 {E36:
Nimzo-Indian: Classical: 4...d5 5 a3.} 8. Bg5 Nbd7 9. cxd5 exd5 10. Qc6 Ba6 11.
Rc1 {[#]} Re8 $146 ({Predecessor:} 11... Rc8 12. Bxf6 Nxf6 13. Qa4 Bc4 14. Nd2
c6 15. e3 Bxf1 16. Nxf1 c5 17. Rd1 cxd4 18. Qxd4 {1/2-1/2 (42) Purnama,T (2379)
-Oliveira,J (2256) Shenzhen 2011}) 12. Bxf6 Nxf6 13. Ne5 h5 14. g3 ({Don't play
} 14. Qxc7 Qxc7 15. Rxc7 Rac8 $15) 14... Ng4 15. Nxg4 hxg4 16. e3 Bxf1 17. Kxf1
Rc8 18. h3 Re6 19. Qb7 Rh6 20. Kg2 gxh3+ 21. Rxh3 Rxh3 22. Kxh3 $11 {[%mdl
4096] Endgame KQR-KQR} c5 $1 23. dxc5 Rc7 24. Qa6 bxc5 25. Qb5 Qc8+ 26. Kg2 a6
27. Qa5 Rc6 28. Rh1 Qa8 29. Rh5 d4 30. e4 Qe8 31. f3 Qb8 $36 {[%mdl 2048]
Black has some pressure.} 32. b3 Qc7 (32... g6 {looks sharper.} 33. Rxc5 Rxc5
34. Qxc5 Qxb3 35. e5 Qb2+) 33. Qa4 Qb6 34. Rd5 {[#]} (34. Qc4 $11 {remains
equal.}) 34... c4 $1 $17 {[%cal Rc4b3]} 35. bxc4 Qb2+ 36. Kh3 Rh6+ 37. Kg4 Rg6+
(37... Qh2 {feels hotter.} 38. Qa5 f6 39. Kf4 Rg6 40. Qe1 Qh6+) 38. Rg5 {
The position is equal.} Rxg5+ 39. Kxg5 $11 {KQ-KQ} d3 40. Kg4 Qe5 41. c5 $1 ({
Not} 41. Qxa6 $2 Qe6+ 42. Qxe6 fxe6 $19) 41... d2 42. Qd1 Qe6+ 43. Kf4 Qh6+ 44.
Kg4 $1 Qe3 {Threatens to win with ...Qe1.} (44... g6 $5 45. c6 $8 Kg7 $11) 45.
c6 $1 Qe1 46. c7 Qxd1 47. c8=Q+ {[%mdl 64] [#] Double Attack} Kh7 48. Qf5+ {
[%mdl 64] Double Attack} Kg8 {Weighted Error Value: White=0.07/Black=0.04}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.41"]
[White "Erigaisi Arjun"]
[Black "Goryachkina, Aleksandra"]
[Result "1-0"]
[ECO "D23"]
[WhiteElo "2634"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,133,0,9,6,16,12,32,22,20,9,29,35,38,27,20,33,28,0,0,-2,0,0,10,-46,-31,
-20,17,26,20,0,133,128,144,145,115,122,264,80,73,94,210,193,188,155,168,163,
179,158,141,68,62,68,45,65,47,47,54,43,51,36,52,-66,60,60,60,60,60,62,62,62,89,
85,70,14,43,14,14,0,13,0,160,160,253,69,90,0,228,228,228,228,228,228,228,228,
409,409,409,409,409,409,409,409,1203,681,12795,592,4758,12799,12800,12793,
12793,6940,12804,12797,6079,6164,5097,5097,2034,1879,29989,29988,29988,29989,
29989,29990]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qb3 dxc4 5. Qxc4 Bg4 6. Nc3 {
D23: Queen's Gambit Accepted: 3 Nf3 Nf6 sidelines.} Nbd7 7. Bf4 e6 (7... Bf5 {
feels hotter.} 8. e3 e6 9. a3 Nd5 10. Bg3 N7f6) 8. e4 {White is slightly
better.} Bxf3 9. gxf3 Be7 10. O-O-O {[#]} Rc8 $146 ({Predecessor:} 10... O-O
11. Kb1 Nh5 12. Be3 Bg5 13. Rg1 Bf4 14. Rg4 Qf6 15. e5 Qh6 16. Rh4 Qg5 {
1-0 (37) Martinovic,S (2548)-Fruebing,S (2406) Reykjavik 2021}) 11. Kb1 O-O 12.
Rg1 Kh8 13. Bh3 b5 14. Qf1 Qa5 15. Ne2 b4 16. Rg5 (16. Bg5 $11) 16... Qb6 $15
17. Be3 c5 18. d5 $1 $36 {[%mdl 2048] White is more active.} exd5 19. e5 Rcd8
20. exf6 $16 Nxf6 21. Nf4 $1 {[%cal Rf4d5]} d4 22. Bc1 Ne4 {[#]} 23. fxe4 $2 (
23. Nd5 $1 $18 {[%cal Rd5b6][%mdl 512] and the rest is easy.} Rxd5 24. Rxd5
Nc3+ 25. bxc3 bxc3+ 26. Kc2) 23... Bxg5 24. Nd5 Qg6 (24... Qh6 $16 {was called
for.}) 25. Bf5 $18 Qh6 26. Rd3 Bxc1 27. Rh3 (27. Qxc1 $2 Qxc1+ 28. Kxc1 g6 $19)
27... g6 28. Rxh6 Bxh6 {[#]} 29. Bh3 (29. Qh3 $1 $16 Bg7 30. Bd7) 29... f5 $14
30. Bg2 fxe4 31. Bxe4 Rde8 $1 {[%cal Re8e4]} 32. Qg2 c4 33. Kc2 d3+ 34. Kd1 $1
Re5 35. h4 ({White should try} 35. f3 $1 $14) 35... Rxd5 36. Bxd5 c3 37. bxc3
bxc3 38. Bb3 Rc8 {[#] ( -> ...c2+)} 39. Bc2 $1 {[%cal Rc2d3]} dxc2+ 40. Kxc2 {
[%mdl 4096] Endgame KQ-KRB} Bg7 41. Qb7 ({White should play} 41. Qg4 $14 Rd8
42. Kc1) 41... Rd8 $11 {Strongly threatening ...Rd2+.} 42. f4 h5 43. Qxa7 Rd2+
44. Kc1 {aiming for a4.} Rb2 $2 (44... Rh2 $11) 45. a4 $1 $16 Rh2 (45... Re2
$16 {keeps fighting.} 46. a5 Re1+ 47. Kc2 Re2+ 48. Kd1 Rd2+ 49. Kc1 Ra2) 46.
Qa8+ $2 (46. Qg1 $18 Rxh4 47. a5 (47. Qxg6 Rh1+ 48. Kc2 Rh2+ 49. Kd1 Rh1+ 50.
Ke2 Rh2+ 51. Kf3 c2 $11)) 46... Kh7 $14 47. a5 (47. Qf3 $1 $16) 47... Bd4 $2 {
Black is now going downhill.} (47... Rf2 $1 $11) 48. Qf3 $1 $18 {Black must
now prevent f5.} Rf2 {[#]} 49. Qh3 Rxf4 50. a6 Kh6 51. Qg3 {[%mdl 1024] White
has strong compensation.} Rg4 {[#]} (51... Rf2 52. Qg5+ Kg7 53. Qe7+ Rf7) 52.
Qh2 $1 Re4 53. Kc2 Rg4 54. Kd3 Kg7 55. Qc7+ Kh6 (55... Kf6 $142 56. Qd7 Bg1)
56. Qe7 Bg1 57. Kxc3 Bd4+ 58. Kd3 (58. Kc2 $142 Bg1 59. Kd3) 58... Bg1 59. Qf8+
Kh7 60. Qf7+ Kh8 61. Kc3 Rg3+ 62. Kc4 Rg4+ 63. Kd5 Rd4+ 64. Ke5 {a7 would kill
now.} Rg4 65. Qd7 {White mates.} Kg8 66. a7 Bxa7 67. Qxa7 {Weighted Error
Value: White=0.21/Black=0.33} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.42"]
[White "Adly, Ahmed"]
[Black "Shevchenko, Kirill"]
[Result "0-1"]
[ECO "D76"]
[WhiteElo "2602"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,128,26,20,16,14,0,-17,0,0,6,0,0,-18,0,0,0,-29,0,0,0,0,0,0,0,0,0,-55,
-45,-43,-57,-187,-120,-125,-125,-130,-126,-197,-198,-205,-154,-164,-12,-19,-21,
-226,-231,-238,-231,-234,-233,-226,-234,-243,-241,-257,-254,-266,-266,-270,
-270,-277,-286,-296,-294,-292,-254,-254,-254,-254,-254,-308,-260,-308,-308,
-308,-279,-308,-260,-308,-308,-308,-316,-290,-285,-698,-662,-785,-792,-785,
-781,-766,-380,-746,-755,-741,-744,-735,-733,-689,-657,-749,-642,-6079,-5640,
-5189,-5164,-2512,-2520,-4627,-4627,-12812,-1179]} 1. Nf3 Nf6 2. d4 g6 3. c4
Bg7 4. g3 O-O 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Nc6 8. e3 Nb6 9. Nc3 Re8 10. Re1 a5
{D76: Fianchetto Grünfeld: Main Line with 7...Nb6.} 11. h3 a4 {[#]} 12. Nh2
$146 ({Predecessor:} 12. a3 Bd7 13. e4 Na5 14. Bf4 Nb3 15. Rb1 c5 16. dxc5 Nxc5
17. Qe2 Qc8 18. Kh2 {0-1 (42) Dziuba,M (2523)-Salem,A (2834) Chess.com INT 2017
}) 12... Ra5 {The position is equal.} 13. Rb1 $1 Bd7 14. b4 axb3 $1 15. axb3
Bf5 16. b4 Ra8 17. Rb3 Be6 18. Rb1 Bf5 $36 {[%mdl 2048] Black has the
initiative.} 19. b5 Bxb1 20. bxc6 Bf5 21. cxb7 Ra7 22. Ng4 ({White should try} 
22. e4 $11 Bd7 23. e5) 22... Qd7 $15 23. Qb3 Rb8 24. Ne4 (24. Qb4 $15) 24...
Qa4 (24... Bxe4 $19 25. Bxe4 e6) 25. Nc5 Qxb3 26. Nxb3 Nd7 $1 27. Nh2 (27. Bd2
$17 {keeps fighting.} Rbxb7 28. Bxb7 Rxb7 29. Na5) 27... Bc2 $19 28. Nd2 Ra6
29. Bb2 {next Rc1 is good for White.} c5 $2 (29... c6 $19 30. Rc1 Ba4) 30. Rc1
Ba4 31. dxc5 $2 {White is now going downhill.} (31. Nc4 $1 $11) 31... Bxb2 32.
c6 {[#]} Bxc6 33. Rxc6 Rxc6 ({Stronger than} 33... Ra1+ 34. Nhf1 $14) 34. Bxc6
{[#]} Nc5 35. Nc4 Nxb7 36. Nxb2 Na5 37. Bd5 Rxb2 {[%mdl 4096] Endgame KRN-KBN}
38. Nf3 e6 39. Be4 Nb3 {And now ...Nc5 would win.} 40. Ne5 Nc5 41. Bc6 f6 42.
Nd7 Nxd7 43. Bxd7 {KR-KB} Rb6 44. h4 Kf7 45. Kf1 Ke7 46. Ba4 Kd6 47. Bc2 f5 48.
Ke1 Kc5 49. Bd3 Kb4 50. Kd2 Rd6 51. Kc2 $2 (51. Ke2) 51... e5 52. Be2 e4 53.
Bf1 Rd5 54. Be2 Rd7 (54... Kc5 $142 55. Kc3 h6) 55. Bf1 $2 (55. h5) 55... Rd6 {
Black is clearly winning.} 56. Be2 Kc5 57. Kc3 Kc6 58. Bc4 Kd7 59. Bg8 Ke7 60.
Bxh7 Kf6 61. Bg8 Rd1 62. Bc4 Rc1+ 63. Kd4 Rc2 64. g4 Rd2+ {Weighted Error
Value: White=0.63/Black=0.15} (64... fxg4 $142 65. Bb5 Rxf2) 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.43"]
[White "Durarbayli, Vasif"]
[Black "Jobava, Baadur"]
[Result "0-1"]
[ECO "C70"]
[WhiteElo "2629"]
[BlackElo "2582"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,88,35,39,31,28,54,52,50,61,36,30,46,32,70,70,66,67,73,3,3,3,0,0,0,0,
0,7,4,0,0,-89,-98,-104,-114,-169,-167,-161,-163,-158,-168,-215,-218,-215,-228,
-342,-349,-319,-180,-188,-183,-188,0,0,0,-94,-107,-54,-75,-99,0,0,0,0,0,0,314,
317,286,15,353,331,703,-698,-693,-671,-627,-608,-572]} 1. e4 e5 2. Nf3 Nc6 3.
Bb5 a6 4. Ba4 b5 5. Bb3 Na5 6. d4 exd4 7. Qxd4 Bb7 {C70: Ruy Lopez: 3...a6 4
Ba4, Norwegian and Delayed Schliemann.} 8. Nc3 d6 {Hoping for ...c5.} 9. Bg5 f6
{White is slightly better.} 10. Bxg8 Rxg8 {[#]} 11. Bd2 $146 ({Predecessor:} 
11. Be3 Qd7 12. O-O-O Kf7 13. Nd2 Be7 14. h3 Bd8 15. f4 Re8 16. Bf2 c5 17. Qd3
{1-0 (50) Molano,I (1324)-Csaba,F (1367) LSS email 2011}) 11... Nc4 12. O-O-O
g6 13. Nd5 Bg7 14. Bc3 Kf7 15. h4 ({White should try} 15. Rhe1 $16) 15... c6 $1
$11 {[%cal Rc6d5]} 16. Ne3 c5 17. Qd3 Nxe3 18. Qxe3 Re8 {aiming for ...b4.} 19.
Qf4 Kg8 $1 $132 {[%mdl 2048] White must now prevent ...b4. Black is fighting
back} 20. Rxd6 Bh6 {[%mdl 64] Deflection} 21. Qxh6 (21. Ng5 $1 $11 fxg5 22. Qd2
) 21... Qxd6 $17 22. h5 Bxe4 23. hxg6 (23. Ng5 $17 Ra7 24. Nxe4 Rxe4 25. hxg6
Qf4+ {[%mdl 64] Double Attack} 26. Bd2 Qxh6 27. Rxh6) 23... Bxg6 $19 24. Nh4
Qf8 $1 {[%cal Rf8h6]} 25. Qf4 Re4 26. Qg3 Qh6+ 27. Bd2 Qh5 28. f3 (28. Qf3 {
was necessary.}) 28... Rc4 29. c3 Rd8 (29... Ra4 $142 30. a3 Rxh4 31. Rxh4 Qd5)
30. Qc7 Qd5 {[%csl Gd8][%cal Rd5d2]} 31. Bh6 {[%csl Gh6][%cal Rc7g7]} Rd7 (
31... Qd7 $1 $19 {[%cal Rd7c7]} 32. Qxd7 Rxd7 33. Nxg6 hxg6) 32. Qb8+ $11 Rd8
33. Nxg6 (33. Qc7 $11 {keeps the balance.} Qd7 34. Qxd7 Rxd7 35. Nxg6 hxg6 36.
Be3) 33... hxg6 $17 (33... Rxb8 $2 {too greedy.} 34. Ne7+ Kf7 35. Nxd5 $18) ({
Stronger than} 33... Rxc3+ 34. bxc3 Qd3 35. Qf4 $16) 34. Qc7 {[%csl Gh6][%cal
Rc7g7]} Qd7 35. Qh2 Qh7 (35... b4 $1 $17 {[%cal Rb4c3]} 36. Be3 bxc3) 36. g3 $1
$11 g5 37. Qe2 Qf7 {Strongly threatening ...Qe8.} (37... Kf7 $5 38. Re1 $8 Kg6
39. Bxg5 {[%mdl 64] Remove Defender} Kxg5 40. f4+ Kg6 41. Qg4+ Kf7 42. Qe6+ {
[%mdl 64] Double Attack} Kg6 43. Qg4+ Kf7 44. Qe6+ {[%mdl 64] Double Attack}
Kg6 45. Qg4+ $11) 38. Bxg5 Ra4 $2 {[%mdl 8192] [#]} (38... fxg5 $11 {and Black
stays safe.} 39. Qe5 Qg7 40. Qe6+ {[%mdl 64] Double Attack} Kf8) 39. Qh2 $1 $18
{[%csl Gh1][%cal Rh2h8]} Qg7 40. Bh6 (40. Bf4 $1 $18) 40... Qh7 $2 {[%mdl 8192]
[#]} (40... Qg6 $1 $11 41. b3 Ra5) 41. b3 $1 Ra3 $2 (41... Qd3) 42. Qh5 $4 {
[%mdl 8192]} (42. Qh3 $18 f5 43. Kb2) 42... Rxa2 $19 {[%csl Ga2][%cal Rh7c2]
Black is clearly winning.} 43. Qg4+ Kf7 {[%csl Ga2][%cal Rh7c2]} 44. Qh5+ {[#]}
Qg6 $1 {Never resign too early!  Weighted Error Value: White=0.37/Black=0.44}
0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.44"]
[White "Zhou, Jianchao"]
[Black "Sindarov, Javokhir"]
[Result "1/2-1/2"]
[ECO "D90"]
[WhiteElo "2629"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "44"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,44,-7,-3,-3,0,-8,-31,-7,-16,-17,-14,0,-6,-39,-6,-20,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. h4 dxc4 6.
e4 {D90: Grünfeld: 4 Nf3 Bg7 sidelines.} c5 7. d5 b5 8. h5 {Black is slightly
better.} O-O ({Much weaker is} 8... gxh5 $6 9. e5 $16) 9. hxg6 fxg6 10. Rh4 a6
{[#]} 11. e5 $146 ({Predecessor:} 11. Bg5 Qe8 12. e5 Nfd7 13. d6 e6 14. Nd5 Bb7
15. Ne7+ Kh8 16. Bd3 cxd3 17. Rxh7+ Kxh7 {1-0 (38) Chittka,J (2268)-Bronstein,
O (2387) Karlsruhe 2019}) 11... Ng4 12. d6 {The position is equal.} Nxe5 13.
Qd5+ {[%mdl 64] [#] Double Attack} e6 14. Qxa8 Nxf3+ 15. gxf3 Qxh4 16. Qxb8 Bd4
$1 17. Nd1 Qh1 18. Qa8 e5 {[#] White must now prevent ...Bh3.} ({Worse is} 
18... Qxf3 19. Qxf3 Rxf3 20. a4 $16) 19. Qd5+ Rf7 {...Bh3 is the strong threat.
} 20. Qa8 {Strongly threatening d7.} Rf8 {And now ...Bh3 would win.} 21. Qd5+
Rf7 {Threatens to win with ...Bh3.} 22. Qa8 {Hoping for d7.} Rf8 {An
uneventful encounter.  Weighted Error Value: White=0.03/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.45"]
[White "Pichot, Alan"]
[Black "Georgiev, Kiril"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2628"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,80,33,37,33,40,45,43,46,25,26,32,26,15,20,8,24,0,0,-24,0,0,3,3,3,6,8,
9,9,7,25,0,0,0,0,0,0,0,10,10,40,30,32,8,34,16,12,6,6,0,8,8,25,0,86,82,102,107,
104,128,113,113,295,259,279,112,235]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3
Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Nbd2 $1 {[%mdl 4] is now more promising
than 8.c4.} Bf5 9. Re1 {[%cal Rd2e4]} Nxd2 {C42: Petroff Defence: 3 Nxe5 and
unusual White 3rd moves.} 10. Qxd2 Bxd3 11. Qxd3 O-O {White is slightly better.
} 12. Qf5 $5 {[%mdl 4] A promising side line.} Bf6 13. c3 Ne7 {[#]} 14. Qh3
$146 ({Predecessor:} 14. Qg4 Ng6 15. Bg5 Bxg5 16. Nxg5 Qd6 17. Qf5 h6 18. Nf3
Rae8 19. a4 c6 20. Rad1 {1/2-1/2 (27) Latino,A (800)-Galli,P (800) IECG email
2005}) 14... Ng6 15. Bd2 Qc8 16. g4 Qd7 17. Kg2 Rae8 (17... h6 {is more
complex.} 18. g5 Qxh3+ 19. Kxh3 Bxg5 20. Bxg5 hxg5 21. Nxg5 Rae8) 18. Rxe8 Rxe8
19. g5 Qxh3+ 20. Kxh3 Bd8 21. Re1 Rxe1 22. Nxe1 $11 {[%mdl 4096] Endgame
KBN-KBN} f5 23. gxf6 Bxf6 24. Nd3 Kf7 25. Kg4 c6 26. f4 Ne7 27. f5 h5+ 28. Kxh5
Nxf5 29. Bf4 g6+ 30. Kg4 Be7 31. Ne5+ Kg7 32. Bg5 Bd6 33. h4 Ne7 34. c4 Nf5 (
34... Bxe5 $11 35. dxe5 Kf7) 35. cxd5 $1 $16 Bxe5 36. dxe5 cxd5 {[#] KB-KN} 37.
e6 $1 Nd4 {[#]} 38. Kf4 $1 {[%cal Rf4e5] Ke5 is the strong threat.} Nc6 (38...
Nxe6+ $16 39. Ke5 {[%mdl 64] Double Attack} Kf7) 39. a3 a6 40. b3 (40. b4 $18 {
and White stays clearly on top.}) 40... Kf8 {Weighted Error Value: White=0.12/
Black=0.20} (40... a5 $16 41. a4 d4) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.46"]
[White "Bartel, Mateusz"]
[Black "Movsesian, Sergei"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "2597"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "157"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,157,36,52,2,22,8,31,0,0,0,0,-43,0,0,0,0,12,-19,-23,-27,-22,-56,-34,
-97,-57,-50,-56,-50,-50,-62,-53,-58,-55,-96,-79,-93,-91,-110,-112,-121,-100,
-97,-62,-73,-59,-62,-58,-48,-33,-29,-36,-35,-34,-110,-110,-110,-82,-190,-198,
-203,-79,-292,-40,-49,-42,-58,-58,-58,-48,-27,0,-58,-58,-44,-42,-99,-73,-74,
-74,-74,-74,-74,-74,-81,-81,-82,-79,-106,-106,-193,-193,-207,-201,-222,-222,
-324,-322,-327,-203,-203,-206,-201,-201,-192,-167,-167,-167,-163,-151,-158,
-157,-132,-87,-84,-65,-54,-28,-28,-28,-28,-28,-35,-28,-28,-28,-28,-28,-28,-28,
-36,-20,-20,-20,-20,-20,-20,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 e6 3. d4
cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. g4 {B48: Sicilian: Taimanov: 5 Nc3
Qc7 6 Be3 a6 without Be2.} b5 8. Nxc6 Qxc6 9. Qd2 (9. a3 $14) 9... b4 $15 10.
Ne2 Qxe4 11. Rg1 Qc4 (11... Qc6 $15) 12. Nf4 $11 Qc7 13. O-O-O Nf6 14. Bg2 {
14.Nh5 is the recent fashion.} Bb7 {[#]} 15. Bxb7 $146 ({Predecessor:} 15. g5
Ne4 16. Qd4 Nd6 17. Qxb4 Bxg2 18. Nxg2 Rb8 19. Qa4 a5 20. Bd2 Nc4 21. Bc3 {
1/2-1/2 (47) Karjakin,S (2758)-Rapport,R (2760) Stavanger 2021}) 15... Qxb7 16.
f3 d6 17. Qe2 (17. Nh5 $15) 17... Qb5 18. Qxb5+ axb5 19. Kb1 Nd7 20. Nd3 Ne5
21. Nxe5 dxe5 22. Rge1 f6 23. Rd3 Be7 24. Bd2 Kf7 25. Re4 Rhd8 26. g5 Rd5 (
26... Rg8 {feels hotter.} 27. Be3 Rad8 28. Kc1 Rd5 29. gxf6 gxf6 30. Rh4 Kg7)
27. gxf6 gxf6 28. Rh4 $1 {[%cal Rh4h7]} Rg8 {White must now prevent ...Rg1+.}
29. Rxh7+ Ke8 30. Be3 Rg2 31. Kc1 f5 32. Rh5 ({Better is} 32. Rh8+ $1 $15 Kf7
33. Rh7+ Ke8 34. Rh8+ Kf7 35. Rh7+ Kf8 36. Rxd5 exd5 37. Kd1) 32... f4 $17 33.
Ba7 {Threatens to win with Rxd5.} e4 34. Rdxd5 (34. Rhxd5 $17 {was worth a try.
} exd5 35. Rd2 exf3 36. Rf2) 34... exd5 {[%mdl 4096] Endgame KRB-KRB} 35. Kd1
exf3 (35... e3 $1 $19 {is more deadly.} 36. Bb8 Rd2+ 37. Ke1 Rxc2 38. Bxf4 d4)
36. Rf5 $2 (36. Rh3 $17) 36... Bd6 $2 (36... Rxh2 $19 37. Re5 Kf7) 37. Rxd5 $15
{[#]} Bb8 38. Bc5 ({Not} 38. Bxb8 $2 Rg1+ 39. Kd2 f2 $19) (38. Bd4 Rxh2) 38...
Rxh2 {Hoping for ...f2.} 39. Rd3 $1 Rh1+ 40. Kd2 Rh2+ (40... Rh5 {with more
complications.} 41. Bf2 Rh3 42. Rd5 Rh2 43. Ke1 Kf7) 41. Kd1 Rh5 42. Bf2 Rh3
43. Ke1 (43. Rd4 $15) 43... Be5 44. Bd4 Bd6 45. Kf2 Ke7 46. c3 bxc3 47. Rxc3 {
[#]} Ke6 $1 48. Rxf3 Rh2+ 49. Kg1 Rc2 50. Rf2 (50. Rd3 $17 {might work better.}
) 50... Rc4 $19 51. Bb6 Rc6 52. Re2+ Kf5 53. Bd4 (53. Ba7 $142) 53... Rc4 54.
Bb6 Be5 55. Kg2 Rc6 56. Bf2 {[#]} Rd6 $1 57. Bc5 Rd5 58. Bb6 Rd1 59. b3 Rd3 {
Strongly threatening ...f3+.} 60. Kf2 Rh3 61. Re1 Rh6 62. Bc5 Rc6 63. Bb4 $1
Bd4+ 64. Kf3 Rh6 {And now ...Rh3+ would win.} 65. Re8 Rh3+ 66. Ke2 $1 f3+ 67.
Kd3 Ba7 68. Rf8+ Ke6 69. Re8+ Kd5 70. Rd8+ Kc6 71. Rd6+ {The position is equal.
} Kc7 {aiming for ...f2+.} 72. Rf6 f2+ 73. Ke2 Re3+ 74. Kf1 Re4 75. Rf7+ Kb8
76. Rf8+ Kb7 77. Rf7+ Ka6 78. Rf6+ Kb7 79. Rf7+ {Whites escaped into a draw. 
Weighted Error Value: White=0.19/Black=0.17} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.47"]
[White "Van Foreest, Lucas"]
[Black "Kravtsiv, Martyn"]
[Result "1/2-1/2"]
[ECO "D41"]
[WhiteElo "2543"]
[BlackElo "2625"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,60,10,0,2,0,9,0,16,0,0,-8,0,-16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7.
Nf3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bc4 Nd7 12. O-O b6 13. Rad1
Bb7 14. Rfe1 {The position is equal.} Rc8 {D41: Queen's Gambit Declined:
Semi-Tarrasch with 5 cxd5.} 15. Bb3 Qf6 16. d5 $1 {[%mdl 4] is now more
promising than 16.Qe3.} Nc5 17. Bc2 exd5 18. e5 {[%cal Re5f6]} Qe7 19. Nd4 Ne4
20. Qf4 {[%cal Rc2e4]} g6 {[#]} 21. Bxe4 $146 ({Predecessor:} 21. h4 Kh8 22. h5
g5 23. Qf5 Rc5 24. h6 Bc8 25. Qf3 Rc3 26. Re3 Rxe3 27. Qxe3 {1-0 (38)
Melkumyan,H (2650)-Bu,X (2721) Douglas 2019}) 21... dxe4 22. Nf5 $1 {[%cal
Rf5e7]} gxf5 23. Rd7 $1 {[%cal Rd7e7]} Qxd7 24. Qg5+ Kh8 25. Qf6+ Kg8 26. Qg5+
Kh8 27. Qf6+ Kg8 28. Qg5+ Kh8 29. Qf6+ Kg8 30. Qg5+ Kh8 {Not much happened in
this game.  Weighted Error Value: White=0.02/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.48"]
[White "Paravyan, David"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "D04"]
[WhiteElo "2642"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,101,10,6,14,14,12,24,0,0,0,0,-9,0,0,0,0,0,0,0,0,0,0,0,0,0,-18,8,8,13,
13,11,20,17,19,33,10,10,10,10,11,19,6,11,6,10,0,0,0,3,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2.
Nf3 Nf6 3. e3 c5 4. Be2 Nc6 5. O-O Bg4 6. h3 {D04: Colle System.} Bxf3 7. Bxf3
e6 {[#]} 8. dxc5 $146 {White has an edge.} ({Predecessor:} 8. c3 Qc7 9. Nd2 Be7
10. dxc5 Bxc5 11. b3 O-O 12. Bb2 Rfd8 13. Qc2 Rab8 14. Rfc1 {1/2-1/2 (42)
Simek,J (2231)-Markus,R (2348) ICCF email 2018}) 8... Bxc5 9. c4 Ne5 10. Nc3 {
[%cal Rc4d5]} Nxc4 11. e4 $1 {[%cal Re4d5]} Ne5 12. exd5 Nxf3+ 13. Qxf3 Nxd5
14. Rd1 {[%cal Rc3d5]} O-O ({Much worse is} 14... Qf6 $6 15. Nxd5 exd5 16. Qxf6
$16 (16. Qxd5 Qxf2+ 17. Kh1 O-O $17) (16. Rxd5 Qxf3 17. gxf3 Rc8 $11)) 15. Nxd5
exd5 16. Rxd5 Qb6 17. Bf4 Rad8 {White must now prevent ...Rxd5.} 18. Rad1 Rxd5
19. Rxd5 Qc6 20. Be5 Be7 21. Bc3 Rd8 {[#]} 22. Qg3 $1 {[%csl Gc3][%cal Rg3g7]}
f6 $1 {The position is equal.} 23. Rxd8+ Bxd8 24. Qb8 Qb6 25. h4 a6 26. Qc8 Qc7
27. Qf5 (27. Qe6+ {is interesting.} Qf7 28. Qd6 Bc7 29. Qc5 Qd7 30. Qc4+) 27...
Qc6 28. h5 Be7 29. g3 h6 30. Bd4 Kf7 31. Be3 Qe6 32. Qf3 Qxa2 33. Qxb7 Qa5 34.
Qb3+ Kf8 35. Qd1 Qb5 36. b3 Kf7 37. Kg2 f5 38. Qf3 Bf6 39. b4 Qd3 40. Qb7+ Kg8
41. Kh2 Qc4 42. Qd7 Qg4 43. Qe6+ Kh7 44. Kg2 Bc3 45. Bc5 Qe4+ 46. Qxe4 fxe4 47.
Kf1 g6 48. Ke2 gxh5 {next ...Kg6 is good for Black.} 49. Ke3 Bf6 50. Kxe4 h4
51. gxh4 {A rather calm draw.  Weighted Error Value: White=0.03/Black=0.02}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.49"]
[White "Miezis, Normunds"]
[Black "Martirosyan, Haik M."]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2467"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,78,0,-7,0,-11,-8,-4,0,-18,0,0,0,-65,15,-90,-62,-62,-48,-34,-38,-73,
-50,-73,-95,-106,-104,-195,-202,-194,-193,-204,-185,-458,-451,-459,-476,-476,
-476,-476,-466,-476,-472,-476,-469,-695,-511,-503,-492,-1283,-1274,-1204,-1123,
-1105,-1107,-1340,-1327]} 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6
6. Nf3 Nc6 7. O-O Be7 8. d3 O-O 9. a3 Be6 10. b4 a5 11. b5 Nd4 12. Rb1 f6 13.
Nd2 Qc8 {A29: English Opening: Four Knights Variation with 4 g3.} 14. e3 Nf5
15. Qc2 Rd8 {The position is equal.} 16. Nce4 Bd5 $5 {[%mdl 4] Leaves trodden
paths.} 17. Nc4 Qe6 {[%cal Rb6c4] [#]} 18. Bh3 $146 ({Better is} 18. Ncd2 $11)
({Predecessor:} 18. Nxb6 cxb6 19. Nxf6+ gxf6 20. e4 Bb3 21. Qxb3 Qxb3 22. Rxb3
Nd4 23. Rb1 Ne2+ 24. Kh1 Nxc1 25. Rbxc1 Bxa3 {0-1 (54) Gardner,A (2107)
-Williams,R (2234) ICCF email 2015}) 18... Qd7 {[#]} (18... Nxc4 $6 19. dxc4
Bxe4 20. Qxe4 $14) ({Black should play} 18... Bxe4 $15 19. dxe4 Qxc4 20. Qxc4+
Nxc4 21. Bxf5 Kf7) 19. f4 (19. Nxf6+ $1 $11 {keeps the balance.} gxf6 (19...
Bxf6 20. Bxf5) 20. Bxf5 Qxf5 21. e4) 19... exf4 20. Rxf4 Be6 (20... Nd4 $5 21.
exd4 Qxh3 $15) 21. Nf2 Nd6 22. Bg2 Nd5 23. Rh4 Nxb5 {Black continues to play
with concentration.} 24. a4 {[#]} Nb4 $1 {[%cal Rb4c2]} 25. Qb2 (25. Rxb4 $17 {
was called for.} axb4 26. axb5 Qxb5 27. Re4) 25... Nd6 $1 $19 (25... Nxd3 26.
Nxd3 g5 27. Re4 $14 (27. Qxb5 gxh4 28. Qxd7 Rxd7 $11)) 26. Nxa5 {[#]} Nxd3 {
[%mdl 512]} 27. Nxd3 Rxa5 28. Qc2 $2 (28. Bd2 {was worth a try.} Rg5 29. Bb4)
28... Nf5 $1 {[%csl LRd3,LRh4][%mdl 64] Discovered Attack. Black is clearly
winning.} 29. Re4 Qxd3 30. Qxd3 Rxd3 31. Rxe6 Kf7 32. Re4 Rd1+ 33. Kf2 {[#]}
Rc5 34. Bh3 (34. Ke2 $142 Rcxc1 35. Rxc1 Rxc1 36. Rc4 {[%mdl 64] Decoy} Rxc4
37. Bd5+ Ke8 38. Bxc4) 34... Nd6 35. Be6+ Kf8 36. Rh4 (36. Ke2 $142 Rdxc1 37.
Rxc1 Rxc1 38. Rh4) 36... Rc2+ 37. Kf3 Rf1+ 38. Kg4 f5+ {[%mdl 64] Discovered
Attack} 39. Bxf5 Nxf5 {Weighted Error Value: White=0.73/Black=0.17} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.50"]
[White "Antipov, Mikhail Al."]
[Black "Morovic Fernandez, Ivan"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2619"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,55,0,16,6,0,0,7,20,0,43,36,64,44,96,51,125,115,126,112,114,109,112,
106,107,104,108,108,324,0,324,326,321,321,321,314,320,316,307,283,347,233,702,
697,29993,29994]} 1. e4 c5 2. Nf3 e6 3. b3 b6 4. Bb2 Bb7 5. Nc3 Nc6 6. d4 cxd4
7. Nxd4 Nf6 {B40: Sicilian: 2...e6, Unusual lines.} 8. Nxc6 Bxc6 9. Bd3 Bb4 {
[#] The position is equal.} 10. Qf3 $146 ({Predecessor:} 10. O-O Qe7 11. Qe2
O-O 12. a3 Bxc3 13. Bxc3 e5 14. Rfd1 Rfd8 15. Bb4 d6 16. a4 {1-0 (54) Krejci,J
(2578)-Videnova,I (2369) Biel 2018}) 10... Qb8 11. O-O-O Bd6 12. g3 Be5 (12...
O-O $14) 13. Qe3 Ng4 {[#]} (13... Qd6 $14) 14. Qe2 $1 $16 {[%cal Re2g4]} Nf6
15. f4 Bd4 16. Kb1 O-O 17. e5 Bxc3 18. exf6 Bxb2 19. Kxb2 gxf6 $2 (19... Bxh1
20. Bxh7+ Kh8 21. Qh5 Bf3 22. Qg5 gxf6 23. Qh6 Qe5+ 24. fxe5 Rfc8 25. exf6
Rxc2+ 26. Bxc2+ Kg8 27. Qg7#) (19... g6 $16) 20. Qg4+ $40 {[%mdl 128] Black
needs to defend precisely.} Kh8 21. Qh4 $1 {[%csl Gd3,LRf6,LRh7][%cal Rh4h7]
[%mdl 64] Double Attack} f5 22. Qf6+ Kg8 23. g4 Qd8 {[#]} ({Don't blunder} 
23... Qxf4 $2 24. Rhg1 $18) (23... Bxh1 $2 24. gxf5 Qb7 25. Rg1+ Bg2 26. Qg5+
Kh8 27. Rxg2 $18) 24. Qh6 f6 ({Stronger than} 24... Bxh1 25. gxf5 Bg2 26. Rg1
Qf6+ 27. Qxf6 Rfc8 28. Rxg2+ Kf8 29. Rg7 {[%mdl 64] Double Attack} Rxc2+ 30.
Bxc2 exf5 31. Qxf7#) 25. gxf5 {Threatening mate with Rhg1+.} Qe7 26. Rhe1 {
Threatens to win with fxe6.} Bd5 $2 (26... Bf3) 27. fxe6 $18 dxe6 {[#]} 28.
Bxh7+ $1 {[%mdl 512] Black did not feel at home in the position after the
opening.  Weighted Error Value: White=0.26/Black=0.67} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.51"]
[White "Ganguly, Surya Shekhar"]
[Black "Budisavljevic, Luka"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2617"]
[BlackElo "2508"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,110,0,10,0,0,0,0,0,14,-32,-38,-38,4,17,13,4,8,6,37,32,50,45,41,47,89,
77,84,78,138,116,169,142,140,145,138,100,154,128,166,145,444,347,347,340,337,
329,304,309,508,506,485,464,2018,1529,29951,29948,29954,29953,29948,29952,
29951,29954,29951,29952,29955,29956,29956,29959,29958,29959,29956,29952,29970,
29972,29974,29975,29975,29976,29976,29977,29977,29978,29977,29978,29979,29980,
29980,29979,29975]} 1. e4 c5 2. Nf3 a6 3. Nc3 e6 4. Be2 Qc7 5. O-O Nc6 6. d4
cxd4 7. Nxd4 Nf6 8. Be3 Be7 9. f4 d6 10. a4 O-O 11. Kh1 Nxd4 12. Qxd4 Bd7 13.
e5 {B85: Sicilian Scheveningen: 6 Be2 a6, lines with early Be3.} Ne8 14. Ne4 {
And now exd6 would win.} Bc6 {With the idea ...dxe5.} 15. Bf3 {The position is
equal.} Rd8 {[#]} 16. c4 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:
} 16. Qc3 Rc8 17. a5 dxe5 18. fxe5 f5 19. exf6 Nxf6 20. Qb3 Kh8 21. Nxf6 Rxf6
22. Bxc6 Qxc6 23. Rxf6 gxf6 {1/2-1/2 (59) Georgiadis,N (2496)-Navara,D (2737)
Biel 2017}) 16... dxe5 17. Qxe5 Qxe5 18. fxe5 f6 19. Bb6 Rc8 20. b3 Kh8 21. Bd4
f5 22. Nc3 Bxf3 23. gxf3 Nc7 24. Rfd1 Na8 25. a5 Bb4 (25... Kg8 $142) 26. Na4
$1 $16 Rfe8 (26... Bxa5 $16 27. Nc5 {[%mdl 64] Double Attack} Bb4 28. Nxb7 (28.
Nxe6 Rfe8 $14) 28... Rc7) 27. Bb6 Nxb6 28. axb6 Red8 29. c5 Kg8 ({Black should
play} 29... Bd2) 30. Rxd8+ Rxd8 {[%mdl 4096] Endgame KRB-KRN} 31. Rc1 Rc8 $2 {
[%mdl 8192] Black cannot hold the game after this.} (31... Rd5 $16 {is a
better defense.}) 32. c6 bxc6 {[#]} 33. Rxc6 {[%mdl 512]} Rb8 ({And not} 33...
Rxc6 34. b7 $18) 34. Rxe6 Kf7 35. Rc6 Ba5 $2 (35... f4 {was necessary.} 36. Nb2
Be7) 36. f4 $18 Ke7 37. Kg2 Rb7 (37... Ke8 $142 38. Kf3 Kf7) 38. b4 Bxb4 {[#]}
39. Rc7+ $1 {White mates.} Rxc7 40. bxc7 {KB-KN} Kd7 41. Nb6+ Kxc7 42. Nd5+ {
[%mdl 64] Double Attack} Kd7 43. Nxb4 {KN-KP} a5 44. Nd3 Kc6 45. e6 Kd6 {[#]}
46. Nc5 $1 {[%cal Rc5b7][%mdl 512]} Ke7 47. Kf3 h6 48. h4 g6 49. Ke3 a4 50. Kd4
Kd6 51. Nxa4 Kxe6 52. Nc5+ Kf6 53. Nd7+ Ke6 54. Ne5 Kf6 55. Nf3 Ke6 {Weighted
Error Value: White=0.07/Black=0.37} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.52"]
[White "Vokhidov, Shamsiddin"]
[Black "Meshkovs, Nikita"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2521"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,121,10,14,16,14,16,17,0,25,0,46,0,39,36,49,59,56,38,36,39,40,39,40,
43,43,33,35,40,37,44,36,31,53,54,54,24,38,16,29,25,172,154,160,140,168,105,129,
143,136,137,133,66,111,0,129,52,118,118,118,114,118,118,118,114,152,152,152,
152,152,150,154,160,241,241,241,240,232,206,199,179,191,191,194,194,194,194,
194,194,430,419,412,404,404,392,485,481,469,450,447,352,485,485,1307,1248,1251,
1188,1162,1146,4934,4934,4934,639]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5
5. Nxc6 Qf6 6. Qf3 dxc6 7. Nc3 {C45: Scotch Game.} Be6 8. Be3 Bb4 9. O-O-O {
The position is equal.} Qe7 10. Bd4 {[#]} O-O-O $146 ({Predecessor:} 10... Nf6
11. Be2 Bc5 12. Bxc5 Qxc5 13. Qg3 O-O 14. f4 Bc4 15. e5 Nd5 16. Ne4 Qb5 {
0-1 (49) Chigaev,M (2616)-Chen,Q (2432) Caleta 2020}) 11. Qe3 Nf6 (11... f6 $5
{[%cal Rc6c5]} 12. Bxa7 Rxd1+ 13. Nxd1 Bxa2 $11) 12. Be2 Rxd4 13. Qxd4 Bc5 14.
Qd2 Bxf2 {[#]} 15. Bc4 $1 Ng4 {And now ...Be3 would win.} 16. Bxe6+ Qxe6 17.
Kb1 {aiming for h3.} Be3 18. Qe2 {h3 is the strong threat.} Bc5 19. Rhe1 Re8
20. h3 Ne5 21. a3 $36 {[%mdl 2048] Black is under pressure.} b5 22. Na2 Nc4 23.
Qf3 Kb7 24. Nc1 f6 25. Qf5 Bb6 (25... Bd6 $11 {and Black is okay.}) 26. Qxe6 $1
$18 Rxe6 27. Rd7 $1 g5 28. g4 ({White should try} 28. Rxh7 $18 Nd2+ 29. Ka1)
28... Ne5 29. Rxh7 Nf3 30. Rd1 Rxe4 31. Rf7 (31. Ka2 $16) 31... Ng1 32. Rh7 Nf3
33. Nd3 {Black is now going downhill.} (33. Ka2 $16) 33... c5 ({Black should
play} 33... Re2 $14) 34. Rf7 $16 Re6 35. Ka2 c4 36. Nb4 Ne5 37. Rh7 a5 38. Nd5
Rd6 39. Nc3 {Hoping for Rxd6.} Rxd1 40. Nxd1 {[%mdl 4096] Endgame KRN-KBN} b4
41. Re7 Nf3 (41... Bc5 $16 42. Re6 Nd7 43. axb4 axb4) 42. axb4 $18 axb4 43. Ne3
Bc5 44. Re8 Nd2 45. b3 cxb3+ 46. cxb3 Bd4 47. Nd5 $1 c5 {[#] Black wants to
play ...c4.} 48. Re2 $1 {[%cal Re2d2]} Nf3 {[#]} 49. Nxf6 $1 {[%mdl 512]} Kc7
$2 (49... Ng1 {was called for.} 50. Re7+ Kb6 51. Re6+ Kb5) 50. Re6 Ng1 51. Ne4
Nxh3 52. Rh6 Nf4 53. Nxg5 Kd7 54. Ne4 Ke7 55. g5 Nd3 {and the idea ...Nc1+
leaves Black hopeful.} 56. Kb1 {White is clearly winning.} Ne5 (56... Be5 $142
57. Rc6 Kf7) 57. Nd6 Bc3 58. Nf5+ Kf7 59. Rf6+ Kg8 60. g6 c4 61. Rd6 {Weighted
Error Value: White=0.10/Black=0.25} (61. bxc4 $142 b3 62. g7) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.53"]
[White "Adhiban, B.."]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2672"]
[BlackElo "2484"]
[Annotator "TA"]
[PlyCount "154"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,154,18,21,18,14,18,21,17,19,13,13,13,13,13,13,14,14,13,16,9,22,0,8,0,
0,0,14,0,0,0,14,2,10,0,0,0,0,0,12,12,28,28,28,28,28,28,77,28,28,28,66,41,45,45,
49,21,43,14,15,12,22,0,0,0,23,14,31,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
8,8,23,23,23,23,23,8,29,37,44,44,33,27,27,44,108,108,125,125,151,158,168,125,
125,125,125,125,125,125,125,125,125,125,125,125,125,125,125,108,125,125,125,
125,125,125,125,125,125,125,1208,976,1088,1055,929,875,29978,29979,29989]} 1.
b3 e5 2. Bb2 Nc6 3. c4 g6 4. e3 Bg7 5. Nf3 Nge7 6. d4 {A01: Nimzowitsch-Larsen
Opening.} exd4 7. Nxd4 O-O 8. Nxc6 {[#] The position is equal.} dxc6 $146 ({
Predecessor:} 8... Nxc6 9. Bxg7 Kxg7 10. Nc3 d6 11. Be2 Be6 12. O-O f5 13. Qd2
Qf6 14. f4 Rad8 {1-0 (39) Adhiban,B (2672)-Yu,R (2497) Chess.com INT 2021}) 9.
Qxd8 Rxd8 10. Bxg7 Kxg7 11. Nc3 h5 12. Rd1 Be6 13. Bd3 a5 14. Ke2 h4 15. Rd2 f6
16. Rhd1 g5 17. f3 b6 18. Bc2 (18. Kf2 {is more complex.} f5 19. f4 gxf4 20.
exf4 Ng6 21. g3) 18... Rxd2+ 19. Rxd2 Rb8 20. Bd3 Kf7 (20... Ng6 {looks
sharper.} 21. Be4 Ne7 22. f4 f5 23. Bd3 Rh8) 21. Kf2 Ng6 22. Bxg6+ Kxg6 $11 {
[%mdl 4096] Endgame KRB-KRN} 23. e4 b5 24. c5 Kf7 25. Ne2 b4 26. Nd4 Bd7 $1 27.
Ke3 Ke7 28. f4 gxf4+ 29. Kxf4 a4 30. h3 axb3 31. axb3 Ra8 32. Rc2 Rg8 33. Nf3
Rg3 34. Rb2 Be6 35. Nd4 Bd7 $1 36. Nf3 Be6 37. Nxh4 Rxb3 38. Nf5+ (38. Rxb3 {
feels hotter.} Bxb3 39. Ke3 Kf7 40. Kd3 Be6 41. Nf3) 38... Kf7 39. Rxb3 Bxb3 {
KB-KN} 40. Ke3 Ba2 {Strongly threatening ...b3.} 41. Kd4 b3 {Threatens to win
with ...b2.} 42. Kc3 {And now Kb2 would win.} Bb1 43. Nd4 Bxe4 44. g3 Bg2 45.
h4 Kg6 46. Kxb3 Be4 47. Kc3 Kh5 48. Kd2 {Black must now prevent Ke3.} Kg4 49.
Ke3 Bd5 50. Kf2 Be4 $1 51. Ne6 Bd5 52. Nf4 (52. Nxc7 {keeps more tension.} Bf7
53. Na6 f5 54. Nb4 f4 55. gxf4 Kxf4 56. Nxc6 Be8 57. Nb8) 52... Be4 53. Ng2 Kf5
$1 54. Ne3+ Ke5 55. Ng4+ Kf5 {[#]} 56. Ke3 $1 {Hoping for Nxf6!} Bd5 (56...
Kxg4 57. Kxe4 Kh5 58. Kf5 Kh6 59. g4 Kg7 60. h5 Kh7 61. Kxf6) ({Black should
try} 56... Bb1 $14 57. Nf2 Ke5) (56... Bc2 57. Nf2) 57. Nf2 $16 Bf7 58. g4+ Ke5
59. Nd3+ Kd5 60. h5 Ke6 61. Nf4+ Ke7 62. Ng6+ Ke6 63. Ke4 Bg8 64. Nf4+ Kf7 65.
Ne2 Bh7+ 66. Kf4 Bd3 67. Nd4 Bb5 68. Nc2 Bf1 69. Nb4 Bg2 70. Na6 Bf1 71. Nxc7
Bd3 72. Na8 Ke6 73. Nb6 Bh7 $2 {[%mdl 8192] Black cannot hold the game after
this.} (73... Ba6 $16 74. Na4 Bd3) 74. Nc8 $18 Kd5 {[#]} 75. Nd6 $1 {[%cal
Rd6e8]} Ke6 76. Ne4 Bg8 {[#]} 77. h6 $1 Kd5 {Weighted Error Value: White=0.06/
Black=0.05} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.10.31"]
[Round "5.54"]
[White "Suleymanli, Aydin"]
[Black "Gretarsson, Hjorvar Steinn"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "2541"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,93,17,10,20,0,0,0,0,0,0,-12,60,56,52,60,62,72,76,63,100,34,28,30,31,
20,31,30,20,37,21,30,60,56,66,51,58,50,52,55,54,58,74,82,71,72,84,73,81,68,64,
72,93,93,131,90,398,167,732,609,806,727,1640,1446,1716,2478,3519,2131,3518,
2374,12835,12835,12836,12836,29987,29988,29988,29989,29990,29991,29991,29992]} 
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Bd3 Bg6 {is now more
promising than 6...Bxd3.} 7. O-O Nbd7 8. b3 Ne4 {D12: Slav Defence: 3 Nf3 Nf6
4 e3 Bf5.} (8... Bb4 $5 {[%cal Rb4c3]} 9. Bb2 Bxd3 10. Qxd3 O-O $11) 9. Ne2 {
[%cal Bc3e2,Be2f4,Bf4h5][%mdl 32]} Bd6 10. Nf4 {[#]} Bf5 $146 {The position is
equal.} ({Predecessor:} 10... O-O 11. Nxg6 hxg6 12. Bb2 f5 13. Ne5 Nxe5 14.
dxe5 Be7 15. Rc1 a5 16. f3 Nc5 {0-1 (64) Jussupow,A (2582)-Brunello,S (2553)
Katowice 2017}) 11. Bb2 Qf6 12. Be2 g5 (12... Rd8 $11) 13. Nh5 $14 Qh6 14. Ne5
f6 {[#]} 15. f3 $1 Nc3 16. Bxc3 fxe5 17. dxe5 (17. cxd5 $16 cxd5 18. g4) 17...
Bc5 {[#]} 18. Bd4 Bxd4 19. Qxd4 {Black must now prevent cxd5.} Qxh5 20. g4 Qf7
{...Bg6 is the strong threat.} 21. gxf5 Qxf5 22. cxd5 exd5 23. f4 $36 {[%mdl
2048] Hoping for e6. Black is under pressure.} O-O-O 24. Kh1 ({But not} 24.
Qxa7 $6 gxf4 25. exf4 Qe4 $11) 24... Kb8 25. Rg1 gxf4 26. exf4 Rhg8 27. Raf1
Rdf8 28. Rxg8 Rxg8 29. Qd3 Qf7 30. Qe3 Qe6 31. Rg1 Rxg1+ 32. Kxg1 a6 33. h3 Nf6
34. f5 Qg8+ {[%mdl 8192] This costs Black the game.} (34... Qe7 $16 {is more
resistant.}) 35. Kh2 (35. Kf1 $142 Ne4 36. Bd3) 35... Ne4 (35... Qe8 36. Qf4
Ka8) 36. f6 Kc7 37. Qf4 Qf8 38. Bd3 Kd7 39. Bxe4 dxe4 $18 {[%mdl 4096] Endgame
KQ-KQ} 40. Qf5+ Kd8 41. Qxe4 Qc5 42. Qf4 Qc2+ 43. Kg3 Qe2 44. f7 {White mates.}
Qe1+ 45. Kg4 Qg1+ 46. Kh5 Qd1+ 47. Kh6 {Weighted Error Value: White=0.18/
Black=0.48} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.1"]
[White "Shirov, Alexei"]
[Black "Firouzja, Alireza"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2659"]
[BlackElo "2770"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,85,12,15,12,15,3,12,0,15,10,12,0,0,0,0,0,0,0,0,-50,-17,-27,-14,-69,
-66,-70,-70,-67,-67,-70,-75,-71,-75,-100,-79,-93,-94,-111,-110,-109,-100,-118,
-95,-112,-110,-116,-112,-97,-96,-114,-100,-153,-140,-137,-141,-138,-151,-144,
-150,-156,-156,-150,-70,-97,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3.
e5 Bf5 4. h4 h5 5. Bd3 Bxd3 6. Qxd3 {B12: Caro-Kann: Advance Variation.} Qa5+
7. Nd2 {[%cal Bb1d2,Bd2b3,Bb3c5][%mdl 32] next e6! is good for White.} e6 8.
Ngf3 Nh6 9. O-O Nf5 10. Nb3 $1 {[%mdl 4] is now more promising than 10.c4.} Qa6
11. Qd1 Be7 12. Bg5 Bxg5 13. Nc5 Qb6 {[#]} 14. Nxg5 $146 ({Predecessor:} 14.
hxg5 h4 15. g6 fxg6 16. Nxe6 Ke7 17. Nf4 Rh6 18. Qd3 Nd7 19. Nxg6+ Rxg6 20.
Qxf5 {1-0 (32) Kollars,D (2586)-Kobalia,M (2614) Chess.com INT 2020}) 14... Na6
15. Nxa6 Qxa6 16. c3 (16. g3 $11) 16... Nxh4 $15 17. g3 Nf5 18. Kg2 Qb6 19. b4
Qd8 20. Qd2 Qe7 21. Rab1 Rh6 22. Rh1 O-O-O 23. b5 cxb5 24. Rxb5 h4 25. g4 h3+
26. Kf1 {[#]} Rg6 $1 27. gxf5 Rxg5 28. fxe6 fxe6 {aiming for ...Rh5.} 29. Rxh3
Rf5 30. c4 (30. Ke1 $142) 30... dxc4 $17 31. Qc3 Rdf8 32. Qxc4+ Kb8 33. Rb2 {
[#]} Qf7 $1 {[%cal Rf5f2]} 34. Qe2 {[#]} Qc7 $1 {[%cal Rc7c1] Hoping for ...
Qc1+.} 35. Qc2 Qd7 ({Black should try} 35... Rxf2+ $17 36. Qxf2 Qc4+ 37. Kg2
Rxf2+ 38. Rxf2 Qxd4) 36. Rhb3 b6 (36... Rxf2+ $17 37. Qxf2 Rxf2+ 38. Rxf2 Qxd4
39. Rf8+ Kc7 40. Rf7+ Kc6 41. Rbxb7 Qa1+ 42. Kg2 Qxa2+ 43. Kh3 a5 44. Rxg7 Qa1
45. Rbc7+ Kb5 46. Rb7+ Kc5) 37. Qc5 $1 $11 {Rxb6+! is the strong threat.The
position is equal.} Qb7 {Threatens to win with ...Qh1+.} 38. Rxb6 $1 axb6 39.
Rxb6 {Black must now prevent Qd6+.} Rxf2+ {[%mdl 64] Double Attack} 40. Ke1
Rf1+ 41. Ke2 R1f2+ 42. Ke1 Rf1+ 43. Ke2 {Whites escaped into a draw.  Weighted
Error Value: White=0.09/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.2"]
[White "Najer, Evgeniy"]
[Black "Caruana, Fabiano"]
[Result "1/2-1/2"]
[ECO "B45"]
[WhiteElo "2654"]
[BlackElo "2800"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,116,18,25,27,18,24,19,26,34,12,28,8,15,19,5,40,15,22,16,20,20,30,29,
56,61,87,62,48,76,97,88,99,87,94,95,82,81,93,80,102,101,97,77,77,81,84,90,130,
131,129,120,158,171,147,145,145,145,135,135,126,59,59,47,148,130,190,190,190,
190,190,190,190,190,190,190,190,190,190,190,190,190,262,0,183,183,183,176,176,
47,56,0,101,0,101,0,101]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6
6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Qb6 10. c4 Bb4+ {The main line 10...
Bb4+ scores better than 10...Ne3.} 11. Ke2 f5 12. exf6 Nxf6 {[#] B45: Sicilian
Four Knights.} 13. Be3 $1 Qd8 14. Nd6+ Bxd6 15. Qxd6 Bb7 16. Rd1 Rc8 17. g4 {
Hoping for g5.} c5 18. Rg1 Rf8 (18... Rc6 $5 {[%cal Rc6d6]} 19. Qe5 O-O $14)
19. Bg2 (19. Bxc5 Rf7 $17) 19... Bxg2 20. Rxg2 Rf7 21. Kf1 {[#]} (21. Bxc5 $2
Ne4 $19) 21... Qb6 $146 ({Predecessor:} 21... Qc7 22. Kg1 Qxd6 23. Rxd6 h5 24.
gxh5 Nxh5 25. Ra6 Nxf4 26. Bxf4 Rxf4 27. Rxg7 Rf7 {1/2-1/2 (27) Fabri,L (2330)
-Troia,E (2313) ICCF email 2013}) 22. Kg1 Rc6 23. Qd3 {And now g5 would win.}
d5 $1 24. g5 ({Don't play} 24. cxd5 Nxd5 25. f5 Nxe3 $11) 24... dxc4 25. Qe2
Ng8 26. Qxc4 Ne7 27. Rgd2 {aiming for Qe4.} Rf5 28. Qe4 ({But not} 28. Qd3 $6
Nd5 $11) 28... Qc7 29. b3 a6 30. Rd3 Qc8 31. Bc1 $36 {[%mdl 2048] White is in
control.} g6 32. Bb2 {Threatens to win with Bf6.} Rd5 33. Rxd5 exd5 34. Rxd5
Re6 35. Re5 Rxe5 36. fxe5 ({Resist} 36. Qxe5 $6 Qg4+ 37. Kf2 Qh4+ 38. Kf1 Qxh2
$14) 36... Qd7 37. e6 $1 {[%cal Re6d7]} Qd1+ 38. Kg2 Qd2+ 39. Kh3 Qd5 40. Qxd5
Nxd5 $16 {[%mdl 4096] Endgame KB-KN} 41. Kg4 (41. Bf6 $16) 41... Ke7 $14 42.
Ba3 Kd6 ({Black should try} 42... Nc3 $14) 43. Kf3 $1 $16 Ne7 (43... Kxe6 $16
44. Bxc5 Nc3) 44. Ke4 $18 Nd5 45. e7 $1 {[%cal Re7e8]} Nxe7 {[#]} 46. b4 $1 {
[%cal Bb3b4,Bb4c5][%mdl 32]} Nc6 47. bxc5+ Ke6 48. Bc1 Ne7 49. Bd2 Nc6 50. Bc3
Ne7 51. Kd4 Nf5+ (51... Nc6+ $142 52. Kc4 Ne7) 52. Ke4 Ne7 $1 53. Be5 Nc6 54.
Bf4 Nb4 {[#]} 55. Kd4 (55. Be3 $1 $18) 55... Nc6+ $1 $14 56. Ke4 Nb4 $1 57. Bd2
Nc6 58. Bc3 Ne7 {Weighted Error Value: White=0.20/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.3"]
[White "Vachier-Lagrave, Maxime"]
[Black "Ponkratov, Pavel"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2763"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,51,0,0,-7,-14,-32,-25,-60,-21,-25,-17,-45,0,0,0,0,0,0,0,-58,75,61,49,
68,58,49,150,152,182,188,175,191,184,126,174,196,372,332,356,333,443,434]} 1.
e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. O-O {C02: French:
Advance Variation.} Bd7 8. Re1 $1 {[%mdl 4] is now more promising than 8.cxd4.}
Nge7 9. h4 {Black has an edge.} h6 10. a3 Rc8 {[#]} 11. b4 $146 ({Predecessor:
} 11. Bc2 Nf5 12. Bxf5 exf5 13. cxd4 Be7 14. Nc3 Be6 15. Re2 O-O 16. Bf4 Na5
17. h5 {0-1 (39) Svoboda,S (2409)-Krak,T (2349) Slovakia 2019}) 11... a6 12.
Bb2 {[%cal Rc3d4]} g5 13. Nh2 Bg7 14. Ng4 gxh4 {And now ...h3! would win.} 15.
cxd4 (15. Qf3 $1 $11) 15... h5 (15... Nxd4 $15 {stays ahead.} 16. Nf6+ Bxf6 17.
exf6 Nef5) 16. Nf6+ $16 Bxf6 17. exf6 Ng8 18. Qf3 Rh6 (18... Qd8 $14) 19. Qxd5
Nxf6 20. Qg5 $36 {[%mdl 2048] White is on the roll.} Ng4 21. Nc3 {[%cal Bb1c3,
Bc3e4,Be4g5][%mdl 32] Hoping for Nd5.} ({Don't play} 21. Qxh4 $6 Nxd4 22. Nc3
e5 $14) 21... Qd8 ({Don't go for} 21... Qxd4 $2 22. Nd5 $1 $18) 22. Qxd8+ ({
White should try} 22. Qg8+ $18 Ke7 23. Qxd8+ Kxd8 24. Ne4) 22... Kxd8 {[#]} 23.
Ne4 $1 e5 $2 (23... Rg6) 24. f3 Nxd4 25. fxg4 {Strongly threatening Ng5.} hxg4
26. Ng5 {[%mdl 64] Discovered Attack.  Weighted Error Value: White=0.14/
Black=0.35} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.4"]
[White "Sevian, Samuel"]
[Black "Yu, Yangyi"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2654"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,62,0,15,0,3,0,0,2,10,6,10,0,0,0,0,0,0,0,8,0,0,0,0,0,2,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,-22,2,6,8,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Bf4 Nf6 3. e3 Bg4
4. Nf3 e6 5. h3 Bh5 {The position is equal.} 6. c4 {D02: 1 d4 d5 2 Nf3
sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bd6 7. Bxd6 cxd6 8. Nc3
dxc4 9. Bxc4 O-O {[#]} 10. Be2 $146 ({Predecessor:} 10. O-O Nbd7 11. Be2 Rc8
12. Qb3 Qb6 13. Qa3 Rc6 14. Rfc1 Rfc8 15. Kf1 a5 16. Nd2 Bxe2+ 17. Nxe2 {
1-0 (39) Santos Ruiz,M (2581)-Narciso Dublan,M (2502) chess24.com INT 2020})
10... Qb6 11. Qd2 Nc6 12. O-O Rfc8 13. Rfc1 Bg6 14. Nh4 Ne4 15. Qe1 Nxc3 ({
Don't go for} 15... Qxb2 $2 16. Nxg6 Nxd4 17. Ne7+ (17. exd4 Nxc3 18. Ne7+ {
[%mdl 64] Double Attack} Kf8 $18) 17... Kh8 18. Nxc8 $18) 16. bxc3 Be4 17. f3
Bg6 18. Nxg6 hxg6 19. Rab1 Qc7 20. f4 Qe7 21. h4 Rc7 22. Rb5 d5 23. c4 a6 24.
Rb3 dxc4 $1 25. Rxc4 Rac8 26. Rbc3 Na5 27. Rxc7 Rxc7 28. Qc1 Rxc3 29. Qxc3 Nc6
30. Bxa6 bxa6 31. Qxc6 Qa3 {A rather calm draw.  Weighted Error Value: White=0.
03/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.5"]
[White "Nihal Sarin"]
[Black "Navara, David"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2652"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,79,4,14,14,12,-5,30,39,67,47,68,56,47,62,61,54,60,55,102,83,133,138,
120,110,205,205,193,140,216,209,192,52,52,52,52,52,195,52,371,371,371,371,469,
469,500,500,498,498,498,469,456,371,371,371,371,371,251,251,251,251,371,371]} 
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 c5 8.
Bb5+ Nc6 9. O-O cxd4 10. cxd4 O-O {[%cal Rc6d4]} 11. Bxc6 {D85: Exchange
Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} bxc6 12. Qc2 $5 {
[%mdl 4] [#] Exploring less charted territory.} Ba6 $146 ({Predecessor:} 12...
Bg4 13. Ne5 Qxd4 14. Bb2 Qb6 15. Rab1 Bxe5 16. Bxe5 Qa6 17. f3 Be6 18. Qc5 f6 {
Ricard,J (2238)-Bobel,P (2277) ICCF email 2009}) 13. Rd1 {White has an edge.}
c5 14. dxc5 Bxa1 15. Bh6 Bh8 {aiming for ...Qc7.} 16. Rxd8 Rfxd8 17. h4 Bd3 18.
Qa4 {c6 is the strong threat.} a6 19. Bg5 Rac8 20. Bxe7 Re8 {[#]} 21. Bd6 {
Hoping for Qb3.} Bxe4 (21... Rxe4 $16 {is a better defense.} 22. Qd7 Ree8) 22.
Qxa6 $18 Ra8 23. Qc4 (23. Qb5 $18) 23... Bxf3 (23... Bc6 $16) 24. gxf3 Be5 {[#]
} 25. Qd5 ({Better is} 25. h5 $1 $18) 25... Rad8 $14 26. h5 $1 Re6 {[%cal
Re5d6]} 27. h6 $1 Bf4 28. Qb7 (28. a4 $18) 28... Bxh6 $2 {[%mdl 8192] [#]} (
28... Bxd6 $14 29. cxd6 Kf8) 29. c6 $1 $18 Rexd6 (29... Rdxd6 30. c7) 30. c7
Bg5 (30... Rd1+ 31. Kg2 $18) 31. a4 {[%cal Ba2a4,Ba4a5,Ba5a6][%mdl 32]} (31.
cxd8=B Bxd8 32. Kg2 Kg7 $18) 31... Kg7 ({But not} 31... Rd1+ 32. Kg2 $18) 32.
a5 ({Weaker is} 32. cxd8=B Bxd8 33. Kg2 Bb6 $18) 32... Re8 {intending ...Rd1+.}
33. c8=Q Rxc8 34. Qxc8 {[%mdl 4096] Endgame KQ-KRB} Bd8 35. a6 {Black must now
prevent a7.} Bb6 36. Qb7 Rf6 37. Kg2 ({Don't do} 37. a7 Bxa7 38. Qxa7 Rxf3 $18)
37... h6 38. a7 Bxa7 39. Qxa7 Rf5 (39... g5 $142 40. Qd4 Kg6 41. Qe4+ Kg7) 40.
Qd4+ {[%mdl 32768] Weighted Error Value: White=0.20/Black=0.45. An unexpected
result.} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.6"]
[White "Korobov, Anton"]
[Black "Tari, Aryan"]
[Result "1/2-1/2"]
[ECO "D40"]
[WhiteElo "2690"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,46,0,9,0,0,0,0,0,31,0,15,25,28,25,33,0,0,0,0,0,-4,-16,0,0,0,0,0,0,0,
0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 dxc4 7. Bxc4
a6 8. O-O b5 9. Bd3 {D40: Queen's Gambit Declined: Semi-Tarrasch with 5 e3.}
cxd4 10. exd4 Be7 11. Re1 Bb7 12. Ne4 {[#]} Nxe4 $146 ({Predecessor:} 12... Nd5
13. Nc5 Qb6 14. Nxb7 Qxb7 15. Be4 Rd8 16. Qc2 Bf6 17. Be3 h6 18. b4 O-O {
1-0 (44) Rantanen,M-Lumme,M Salo 1993}) 13. Bxe4 Na5 14. Bxb7 Nxb7 15. Bf4 O-O
{The position is equal.} 16. Rc1 Rc8 17. Rxc8 Qxc8 18. Qd3 Qa8 19. Bg5 Bd6 20.
Bd2 Be7 21. Bg5 Bd6 22. Bd2 {[#] And now Ng5 would win.} Be7 23. Bg5 Bd6 {
A rather calm draw.  Weighted Error Value: White=0.04/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.7"]
[White "Predke, Alexandr"]
[Black "Sasikiran, Krishnan"]
[Result "0-1"]
[ECO "E49"]
[WhiteElo "2666"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,106,17,23,25,39,46,37,69,-78,-67,-65,-53,-53,-42,-54,-45,-36,-46,
-251,-246,-254,-138,-131,-142,-184,-152,-217,-212,-250,-139,-322,-331,-406,
-402,-400,-421,-418,-332,-489,-477,-479,-481,-507,-587,-593,-587,-567,-564,
-804,-779,-720,-552,-710,-708,-756,-764,-760,-734,-839,-837,-875,-833,-831,
-829,-806,-812,-806,-787,-733,-654,-541,-474,-457,-446,-427,-414,-406,-387,
-810,-802,-791,-774,-4610,-4079,-5933,-29971,-29970,-29965,-29936,-5944,-5558,
-5081,-5097,-4943]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. a3
Bxc3+ 7. bxc3 dxc4 8. Bxc4 e5 {E49: Nimzo-Indian: Rubinstein: 5 Bd3 d5 6 a3
Bxc3+ 7 bxc3.} 9. Nf3 (9. dxe5 Qxd1+ 10. Kxd1 Ng4 $15) 9... e4 10. Ne5 {[#]}
Nc6 $146 {White is slightly better.} ({Predecessor:} 10... c6 11. a4 Nd5 12.
Bb3 Qg5 13. g3 Nxc3 14. Qc2 Nd5 15. Ba3 Rd8 16. h4 Qf6 {1/2-1/2 (49) Banyai,I 
(1981)-Gosztolya,F (1958) Hungary 2016}) 11. Qc2 (11. Nxc6 $14 {stays ahead.}
bxc6 12. O-O) 11... Nxe5 $17 12. dxe5 Ng4 13. Be2 Qd5 14. c4 Qxe5 15. Bb2 Qf5
16. O-O-O $2 (16. O-O $15) 16... Nxf2 $19 ({Weaker is} 16... Qxf2 17. Bd4 $17)
17. Rhf1 {[#] And now Qc3 would win.} Nd3+ (17... Nxd1 18. Rxf5 Nxb2 19. Rf4
$11) (17... Qg5 $1 $19 18. Rd2 (18. Rd5 Qxg2) 18... Qxe3) 18. Bxd3 $17 exd3 19.
Qc3 {[%csl Gb2][%cal Rc3g7]} Qg6 {Strongly threatening ...Bg4.} 20. g4 (20.
Qxd3 $17 c5 21. Qxg6 hxg6 22. h4) 20... f6 $19 ({Stronger than} 20... Bxg4 21.
Rg1 $11) 21. Rf4 {[#]} Be6 ({Better is} 21... Rd8 $1 $19 22. Qd2 Rb8) 22. Rg1 {
White does not recover from this.} (22. Qxd3 $17 {was necessary.} Qh6 23. h4)
22... Rad8 {...d2+ is the strong threat.} 23. Kd2 Qg5 24. Rg3 h6 25. Qb4 b6 26.
Qa4 (26. Qb5 $142) 26... b5 27. cxb5 Qd5 28. Qb4 c5 29. Qc3 Rb8 30. a4 a6 31.
g5 hxg5 32. e4 Qd7 ({Worse is} 32... gxf4 33. exd5 fxg3 34. dxe6 $11) 33. Rff3
axb5 34. Rxd3 Qc7 35. axb5 Qf4+ 36. Ke1 Rxb5 37. Rd2 Rb3 38. Qxc5 Rxg3 39. hxg3
Qxg3+ 40. Qf2 Qg4 41. Rd4 Qh3 42. Qf1 g4 43. Qxh3 gxh3 {[%mdl 4096] Endgame
KRB-KRB} 44. Kf2 Kf7 45. Kg3 Rb8 46. Bc1 (46. Bc3) 46... Rb3+ 47. Kh2 Rf3 48.
Rd2 g5 49. Kg1 g4 50. Rf2 Rb3 51. Bg5 Rb1+ (51... Kg6 $142 52. Bf4 g3 53. Rf1
Bg4 54. Bd6 h2+ 55. Kg2 {[#]} Bf3+ $1 {[%mdl 512]} 56. Kxg3 h1=Q 57. Rxh1 Bxh1+
58. Kf2 Bxe4 59. Ke2 Kf5 60. Bf8 Bd5 61. Kd2 Ke4 62. Bc5 f5 63. Bf8 f4 64. Ke1
f3 65. Bc5 Rb2 66. Ba7 Bc4 67. Bc5 Ra2 68. Bb6 Re2+ 69. Kf1 Rb2+ {[%mdl 64]
Discovered Attack} 70. Kg1 Rxb6 71. Kf2 Kf4 72. Ke1 Ke3 73. Kd1 Bd3 74. Ke1
Rb1#) 52. Kh2 g3+ {[%mdl 64] Deflection, Decoy} 53. Kxg3 Rg1+ {Weighted Error
Value: White=0.57/Black=0.19} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.8"]
[White "Deac, Bogdan-Daniel"]
[Black "Sargissian, Gabriel"]
[Result "1/2-1/2"]
[ECO "C89"]
[WhiteElo "2643"]
[BlackElo "2664"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,71,19,30,38,43,33,36,37,24,19,31,167,39,36,8,8,8,8,8,7,5,4,8,7,7,4,7,
7,7,7,7,7,7,7,9,8,7,7,7,7,0,7,0,7,0,2,0]} 1. e4 {RR} e5 2. Nf3 Nc6 3. Bb5 a6 4.
Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11.
Rxe5 c6 12. d3 Bd6 13. Re1 Bf5 14. Qf3 Qh4 {C89: Closed Ruy Lopez: Marshall
Attack.} 15. g3 ({Don't play} 15. Bxd5 Bxh2+ 16. Kf1 Bg4 $17) 15... Qh3 16. Nd2
Rae8 {White is slightly better.} 17. Ne4 Bg4 18. Qg2 Qxg2+ 19. Kxg2 f5 {[#]}
20. Bf4 $1 Bxf4 {The position is equal.} 21. gxf4 {Hoping for Nc5.} fxe4 22.
dxe4 {[%mdl 64] Pin} Bf3+ $1 {[%mdl 64] Decoy} 23. Kxf3 Rxf4+ 24. Kg3 Rfxe4 25.
Rxe4 Rxe4 $11 {[%mdl 4096] Endgame KRB-KRN} 26. f3 Re5 27. c4 bxc4 28. Bxc4 a5
29. Rc1 Rg5+ 30. Kf2 {[#]} Kf8 $146 ({Predecessor:} 30... Rh5 31. Bb3 a4 32.
Bxa4 Rxh2+ 33. Kg3 Rxb2 34. Bb3 Kf8 35. Rxc6 Nb4 36. Rc8+ Ke7 37. Ra8 g5 38.
Ra7+ Kf6 39. Rf7+ Ke5 40. Re7+ Kf6 41. Re6+ {1/2-1/2 (41) Naiditsch,A (2626)
-Kasimdzhanov,R (2670) Nancy 2005 EXT 2015 [RR]}) 31. Bd3 Ne7 32. Be4 ({But not
} 32. Bxh7 g6 $17) 32... Rh5 33. Kg3 Rg5+ 34. Kf2 Rh5 35. Kg3 Rg5+ 36. Kf2 {
Weighted Error Value: White=0.03/Black=0.00} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.10"]
[White "Aronian, Levon"]
[Black "Donchenko, Alexander"]
[Result "1/2-1/2"]
[ECO "A28"]
[WhiteElo "2782"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,104,11,8,5,11,13,12,0,0,-6,13,12,10,10,10,12,17,-3,4,0,0,6,4,-7,33,7,
35,18,42,39,71,64,68,76,103,111,87,73,76,64,64,69,158,77,70,77,69,66,68,60,68,
63,57,59,77,19,9,28,34,0,0,0,32,32,32,32,33,33,8,8,8,8,8,8,8,8,8,2,5,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. e4 Bb4 5. d3 d6
6. a3 {A28: English Opening: Four Knights Variation.} Bc5 {Black wants to play
...Ng4.} 7. b4 Bb6 8. Na4 Bd4 9. Rb1 Bg4 10. Be2 Bxf3 11. Bxf3 O-O 12. O-O a6
13. Qd2 Ba7 14. Nc3 Nd4 15. Bd1 b5 16. Kh1 {[#]} c5 $146 ({Predecessor:} 16...
c6 17. Qe1 Re8 18. f3 h6 19. Ne2 Nxe2 20. Qxe2 Bd4 21. Bd2 Qe7 22. Bb3 Rab8 {
1/2-1/2 (54) Rallabandi,P (2462)-Williams,R (2309) ICCF email 2019}) 17. Qa2
Qd7 18. f4 Kh8 19. f5 cxb4 20. axb4 Rfc8 21. Bg5 (21. Qxa6 $2 {[#]} Bc5 $1 $19
{[%mdl 512]}) 21... bxc4 22. Bxf6 gxf6 23. Qd2 cxd3 24. Nd5 Qd8 25. Qxd3 Qf8 ({
Black should try} 25... Nb5 $14) 26. Ra1 (26. Qxa6 $142 Rcb8 27. Nxf6) 26...
Nb5 $16 27. Rxa6 Nc7 28. Nxc7 Rxc7 29. Qa3 {[#] aiming for b5.} Qe7 $1 30. b5 {
And now b6 would win.} Rb8 31. Be2 ({Wrong is} 31. Rxd6 $2 Bc5 $19) 31... Bd4
32. Rc1 ({But not} 32. Rxd6 $2 Bc5 $19) (32. Qxd6 $16 Qxd6 33. Rxd6) 32... d5
$11 {...Qxa3 is the strong threat.} 33. Rxc7 Qxc7 34. Bd3 (34. exd5 {with more
complications.} Qc2 35. Qf3 e4 36. Qf1 Be5 37. d6) 34... dxe4 35. Bxe4 Qc5 (
35... Kg7 {seems wilder.} 36. Rc6 Qd8 37. Qg3+ Kf8 38. Qa3+ Kg7) 36. Qxc5 Bxc5
37. Ra8 Rxa8 38. Bxa8 $14 {[%mdl 4096] Endgame KB-KB} Kg7 39. g3 {The position
is equal.} Kf8 40. Kg2 Ke7 41. Kf3 Kd6 42. Ke2 Bg1 43. Bf3 Kc5 44. Kf1 Bd4 ({
Don't play} 44... Bxh2 $6 45. Kg2 $16) 45. Be2 Kd5 46. Kg2 Ke4 47. g4 Kf4 48.
h3 e4 49. Bc4 e3 50. Be2 Bb6 51. Bc4 Bd4 52. Be2 Bb6 {Weighted Error Value:
White=0.08/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.11"]
[White "Esipenko, Andrey"]
[Black "Abdusattorov, Nodirbek"]
[Result "1-0"]
[ECO "A61"]
[WhiteElo "2720"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,53,27,49,41,37,31,21,36,19,24,45,37,41,31,38,22,26,32,47,32,27,24,67,
76,76,76,76,76,76,76,76,79,86,83,105,81,100,93,93,92,497,478]} 1. d4 Nf6 2. c4
e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. h3 Bg7 8. Bf4 {A61: Modern
Benoni: Nf3 without early e4.} O-O 9. e3 Na6 {The main line 9...Na6 scores
better than 9...a6.} 10. Bxa6 {The position is equal.} bxa6 11. Rc1 Rb8 12. b3
a5 13. O-O Rb4 14. Re1 Nh5 15. Bh2 f5 {[#]} 16. a3 $5 $146 {[%mdl 8] An
interesting novelty.} ({Predecessor:} 16. Nd2 f4 17. Nce4 fxe3 18. fxe3 Nf6 19.
Nxd6 Nxd5 20. N2e4 Be6 21. Nxc5 Qe7 22. Nxe6 Qxe6 {1/2-1/2 (44) Georgiadis,N 
(2525)-Papp,G (2603) Germany 2019}) 16... Rb7 17. e4 Bxc3 18. Rxc3 fxe4 19. Nd2
Nf6 20. Nxe4 Nxe4 21. Rxe4 Bf5 22. Re1 a4 23. bxa4 Rb1 24. Rc1 Rb2 {[#]} 25.
Bg3 $1 Qf6 26. Re2 {aiming for Be5!} Bd7 $2 {[%mdl 8192] [#]} (26... Rbb8 $16)
27. Be5 $1 {[%cal Re5f6][%mdl 512] Weighted Error Value: White=0.03/Black=0.41}
1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.12"]
[White "Bluebaum, Matthias"]
[Black "Harikrishna, Pentala"]
[Result "1/2-1/2"]
[ECO "D23"]
[WhiteElo "2640"]
[BlackElo "2719"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,72,14,0,12,14,16,8,8,8,5,15,8,54,54,54,51,61,45,52,45,45,37,37,37,46,
45,40,37,37,37,37,37,51,51,60,60,60,60,60,60,80,54,71,63,64,59,67,62,62,64,68,
72,66,64,65,70,65]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qc2 dxc4 5. Qxc4 Bf5 6. g3
e6 7. Bg2 Be7 8. O-O Nbd7 9. Qb3 Qb6 10. Nbd2 {D23: Queen's Gambit Accepted: 3
Nf3 Nf6 sidelines.} O-O 11. Nc4 Qa6 $1 {The main line 11...Qa6 scores better
than 11...Qxb3.} 12. Bf4 {The position is equal.} Nb6 {[#]} 13. Bd6 $1 Bxd6 14.
Nxd6 {[#]} Be4 $146 ({Predecessor:} 14... Bg6 15. Ne5 Rad8 16. Qb4 Nfd5 17.
Bxd5 exd5 18. a4 Qxe2 19. Rfe1 Qh5 20. Nxb7 Rb8 {1-0 (34) Ju,W (2576)-Sebag,M 
(2450) Skolkovo 2019}) 15. Nxe4 Nxe4 16. Qc2 Nf6 17. Ne5 Nbd7 18. Nxd7 Nxd7 19.
b4 Qb6 20. Rab1 Nf6 ({Don't go for} 20... Qxd4 $2 21. Rfd1 $18) 21. e3 Nd5 22.
Qb3 a6 23. a4 Rfd8 24. Rfc1 h6 25. Rc5 Rac8 26. Bf3 Ne7 27. Qc2 Qa7 28. h4 Qb8
29. Kg2 Nf5 30. Rb3 Nd6 31. Rbc3 Re8 32. Be2 Rcd8 33. Bd3 Re7 34. Qe2 Ne8 35.
b5 axb5 36. axb5 cxb5 {Weighted Error Value: White=0.03/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.13"]
[White "Dubov, Daniil"]
[Black "Saric, Ivan"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2714"]
[BlackElo "2644"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,83,16,25,19,13,18,8,0,0,0,3,-12,-12,-8,0,0,0,-27,-23,-33,-22,-19,-22,
-37,0,-81,-40,-57,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-35,0,-7,0,0,12,0,0,0,0,0,
37,0,0,0,1139,906,1147,1119,1110,1009,29976,29977,29977,29977,29977,29977,
29978,29979,29979,29980]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bd3 Ngf6
6. c3 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} b5 7. a4 Bb7
8. axb5 {The position is equal.} axb5 9. Rxa8 Qxa8 10. Na3 $5 {[%mdl 4] An
interesting side line.} b4 11. Nb5 Qa5 {[#]} 12. cxb4 $146 ({Predecessor:} 12.
Qe2 e5 13. Bc2 Bc6 14. c4 Be7 15. Nh4 g6 16. f4 Nh5 17. fxe5 Bxb5 18. cxb5 Bxh4
{0-1 (29) Pogany,Z (2259)-Papadiamandis,E (2333) Budapest 2021}) 12... cxb4 13.
Bc4 Nxe4 14. d3 {[#]} d5 15. Bf4 $1 {[#]} e5 $1 16. Nxe5 dxc4 17. dxc4 (17. Qh5
$1 $11 {keeps the balance.} Qxb5 18. Qxf7+ Kd8 19. dxe4 Nxe5 20. Bxe5 Qxe5 21.
Qxb7) 17... Nxe5 (17... Qd8 {seems wilder.} 18. Nd3 Be7 19. f3 Ndc5 20. Nxb4
Ne6) 18. Bxe5 {Strongly threatening Bc7.} Bc5 (18... f6 $1 $15 19. f3 Qb6+ 20.
Bd4 Nc5) 19. Bd6 {Qh5 is the strong threat.} Bxd6 20. Nxd6+ Nxd6 21. Qxd6 {
Threatening mate with Re1+.} Bc8 {Threatens to win with ...f6.} 22. Re1+ $1 Be6
23. Rd1 $1 Qa8 24. c5 {White wants to play c6.} Qc8 25. c6 {Threatening Rd4.}
h5 26. Re1 {With the idea c7.} Rh6 27. Re5 Qd8 28. Qxb4 Qc7 29. Qc5 Qe7 30. Qc3
{Hoping for c7.} Qc7 31. b4 Ke7 32. b5 Rh8 33. Qg3 {aiming for Rxe6+!} Rd8 {
( -> ...Rd1+)} 34. h4 $36 {[%mdl 2048] And now Rxe6+! would win. White has the
initiative.} Kf8 $2 {[%mdl 8192] [#]} (34... Rd1+ $11 35. Kh2 Kd8 36. Qxg7 Kc8)
35. Rxe6 $1 $18 {[%mdl 576] Discovered Attack} Qxg3 36. fxg3 fxe6 {[%mdl 4096]
Endgame KR-KP} 37. c7 Ke7 38. cxd8=Q+ {White mates.} Kxd8 39. Kf2 Kc7 40. Ke3
Kb6 41. Kd4 Kxb5 42. Ke5 {Weighted Error Value: White=0.07/Black=0.31} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.14"]
[White "Maghsoodloo, Parham"]
[Black "Tabatabaei, M. Amin"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2701"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,51,13,5,15,4,10,8,12,0,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-6,0,0,0,0,
0,0,0,0,0,0,0,0,5,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6.
O-O {The position is equal.} a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with
5 d4 and 5 d3.} 7. Re1 O-O 8. h3 h6 9. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3,Be3c4]
[%mdl 32]} Be6 10. Bb5 Qb8 11. Nf1 Qa7 12. Be3 Bxe3 13. Nxe3 Ne7 {[%cal Bc6e7,
Be7g6,Bg6f4][%mdl 32]} 14. a4 Ng6 15. Bc4 Bxc4 16. Nxc4 Qa6 17. Qc2 Nf4 18. Kh2
Rfe8 19. b3 {[#]} Ne6 $146 ({Predecessor:} 19... Qc6 20. g3 Ne6 21. Kg2 Nc5 22.
Rad1 Qd7 23. Ncd2 Re7 24. d4 exd4 25. cxd4 Na6 {1/2-1/2 (33) Ilyin,P (2415)
-Zejewski,P (2424) ICCF email 2018}) 20. Rab1 Qc6 21. Nfd2 Nf4 22. Nf3 Ne6 23.
Nfd2 Nf4 24. Nf3 Ne6 25. Nfd2 Nf4 26. Nf3 {An uneventful encounter.  Weighted
Error Value: White=0.02/Black=0.01} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.15"]
[White "Swiercz, Dariusz"]
[Black "Xiong, Jeffery"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2647"]
[BlackElo "2700"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,107,19,19,0,0,0,0,0,0,0,9,2,16,10,11,22,22,14,11,16,18,0,4,3,10,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-7,0,0,0,0,0,0,0,0,53,53,53,53,53,53,53,53,53,
53,53,53,53,53,53,53,53,21,21,21,21,0,53,21,21,8,8,8,8,8,8,8,8,8,8,8,8,8]} 1.
e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8.
Qxd8+ Kxd8 9. Rd1+ Ke8 10. Nc3 Be7 11. g4 {C67: Ruy Lopez: Berlin Defence: 4
0-0 Nxe4.} Nh4 12. Nxh4 Bxh4 13. Kg2 Be6 14. h3 {[#]} f5 $146 ({Predecessor:} 
14... h5 15. f3 Be7 16. Bf4 a5 17. a4 Rd8 18. b3 Rd7 19. Ne4 b6 20. Ng5 Bc5 21.
Nxe6 fxe6 22. Rxd7 Kxd7 {1-0 (35) Dominguez Perez,L (2758)-Tari,A (2639)
chess24.com INT 2021}) 15. exf6 Bxf6 16. Bf4 Bxc3 17. bxc3 Rd8 18. Be5 Kf7 19.
Kg3 Rhe8 {With the idea ...Rxd1.} 20. f4 Rxd1 21. Rxd1 Bxa2 $11 {[%mdl 4096]
Endgame KRB-KRB} 22. Rd7+ Re7 23. Rxe7+ Kxe7 24. Bxg7 {KB-KB} a5 25. f5 a4 26.
Bh6 Bb1 27. Bc1 Bxc2 28. Ba3+ Kf7 29. Kf4 Bd3 30. h4 b6 31. h5 Be2 32. h6 c5
33. g5 Bd3 34. Ke5 Bc4 35. Bc1 b5 ({Black should try} 35... Bd3 $11) 36. Ba3
$14 b4 37. cxb4 cxb4 38. Bxb4 Bd3 39. Ba3 Bc2 40. Kf4 Bb1 41. g6+ Kg8 42. Kg5
Bc2 43. Kf6 Bb1 44. Bc1 Bc2 45. Bb2 Bd3 46. Ba3 Bc2 ({Better is} 46... Bb1 $1
$11) 47. Bc1 Bd3 {The position is equal.} 48. gxh7+ (48. g7 {with more
complications.} c5 49. Ke5 Bc2 50. f6 Bb3 51. Bb2) 48... Kxh7 49. Ke6 a3 50.
Bxa3 Bxf5+ 51. Kxf5 {[#] White threatens Kg5 and mate.} Kxh6 52. Ke6 Kg6 53.
Kd7 Kf5 54. Kxc7 {Weighted Error Value: White=0.04/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.16"]
[White "Artemiev, Vladislav"]
[Black "Ponomariov, Ruslan"]
[Result "1/2-1/2"]
[ECO "B14"]
[WhiteElo "2699"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,49,11,14,8,0,4,0,0,-9,-9,-6,0,-5,-10,-68,-58,-68,-62,-50,0,0,0,-62,0,
0,0,-63]} 1. c4 c6 2. e4 d5 3. exd5 cxd5 4. d4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. cxd5
Nxd5 8. Bd2 O-O 9. Bd3 Nc6 10. O-O Be7 11. a3 Bf6 {The old main line.} 12. Qc2
g6 13. Bh6 Bg7 {B14: Caro-Kann: Panov-Botvinnik Attack with 5...e6 and 5...g6.}
14. Bxg7 Kxg7 15. Be4 Nce7 16. Rac1 b6 17. Nxd5 Nxd5 (17... exd5 $5 18. Bd3 $8
Bf5 $11) 18. Qc6 Bd7 {[#]} 19. Qb7 $146 (19. Qc2 $11) ({Predecessor:} 19. Qc4
Rc8 20. Qe2 Nf6 21. Ne5 Qe7 22. Bf3 Qd6 23. Nxd7 Qxd7 24. Rfd1 Rxc1 25. Rxc1
Qxd4 26. Rc7 e5 27. Rxa7 Rc8 28. h3 e4 29. Bg4 Rc1+ 30. Kh2 h5 {0-1 (30)
Pavasovic,D (2567)-Iordachescu,V (2587) Valjevo 2007}) 19... Bb5 $15 20. Rfe1
Rb8 $1 {[%cal Rb8b7]} 21. Qxa7 {White wants to play Bxd5.} Ra8 22. Qb7 $36 {
[%mdl 2048] White has the initiative.} Rb8 23. Qa7 {With the idea Bxd5.} Ra8 {
[%mdl 1024] Black has compensation.} 24. Qb7 Rb8 25. Qa7 {Weighted Error Value:
White=0.13/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.17"]
[White "Kollars, Dmitrij"]
[Black "Wojtaszek, Radoslaw"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2621"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,60,25,13,8,8,4,8,4,6,14,8,9,0,14,0,0,4,4,4,11,2,8,6,6,8,18,21,23,14,
22,26,29,10,14,14,14,14,14,2,24,2,4,9,42]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.
Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Be7 8. Bc4 O-O 9. O-O Nc6 10. Qe2 Na5 {
B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 11.
Bd3 Be6 12. Na4 b5 {[#]} 13. Bb6 $1 Qc8 {White must now prevent ...Nc4.} 14.
Bxa5 {Hoping for Nb6.} bxa4 {[#]} 15. Rfe1 $146 ({Predecessor:} 15. Rfd1 Qb7
16. b4 Nh5 17. g3 Bg4 18. h3 Be6 19. Kh2 Nf6 20. c4 Nd7 21. Nd2 {1-0 (39)
Ponkratov,P (2624)-Kokarev,D (2624) Khanty-Mansiysk 2014}) 15... Bd8 16. Bxd8
Rxd8 17. Nd2 Qc5 18. b3 a5 19. Bc4 Bd7 20. Qe3 Qxe3 21. Rxe3 Kf8 22. f3 Rdb8
23. Rd3 Ke7 24. Nf1 axb3 25. cxb3 a4 26. Rad1 Rb6 27. Ne3 h5 28. h4 g6 29. R1d2
Ra7 30. Kf2 Ra8 {Not much happened in this game.  Weighted Error Value:
White=0.04/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.18"]
[White "Kuzubov, Yuriy"]
[Black "Kryvoruchko, Yuriy"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2624"]
[BlackElo "2686"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,62,24,18,18,10,10,15,0,0,0,0,0,0,0,0,0,0,14,0,23,0,0,-12,0,0,0,-6,25,
20,20,21,20,25,21,21,27,0,0,0,17,1,20,14,20,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5
Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Bf6 10.
Re1 Re8 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 11. Rxe8+ Nxe8 12. d5 d6
13. a4 a5 14. Nd2 Bg5 {[#]} 15. Nc4 $146 ({Predecessor:} 15. Ra3 Bd7 16. g3 Nf6
17. Bg2 Qe8 18. c4 b6 19. h3 h5 20. h4 Bh6 21. b3 {0-1 (45) Abdusattorov,N 
(2627)-So,W (2770) Chess.com INT 2020}) 15... Bxc1 16. Rxc1 Qg5 17. Ne3 Nf6 18.
Qd4 Bd7 19. Be2 Re8 20. Bf3 b6 21. h4 Qe5 22. Rd1 {[%cal Bc1d1,Bd1d4,Bd4c4]
[%mdl 32]} Ne4 23. Bxe4 Qxe4 24. Qc3 Rc8 ({Much weaker is} 24... Qxa4 $6 25.
Qxc7 Bg4 26. Rf1 $16) ({Avoid the trap} 24... Bxa4 $2 25. Rd4 $18 (25. Qxc7 Qb4
$18)) 25. Rd4 Qe5 26. b3 h6 27. Rc4 (27. g3 {feels hotter.} f5 28. Qd2 Qf6 29.
h5 Re8 30. Qd3) 27... Qxc3 {The position is equal.} 28. Rxc3 Kf8 29. f3 Ke7 30.
Kf2 Kd8 31. Nc4 Rb8 {Not much happened in this game.  Weighted Error Value:
White=0.05/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.19"]
[White "Sjugirov, Sanan"]
[Black "Yilmaz, Mustafa"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2663"]
[BlackElo "2626"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,63,31,14,27,24,21,16,26,14,19,-21,0,-38,-14,-27,-29,0,0,-42,6,7,0,8,
9,2,8,0,0,0,64,-19,-29,-83,-46,-62,0,0,0,0,0,-33,310,321,318,148,511,505,1085,
1060,29989,29990]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6
7. g4 h6 8. Bg2 Be7 {B81: Sicilian Scheveningen: Keres Attack.} 9. Be3 Nc6 10.
f4 Nd7 {The position is equal.} 11. O-O {11.Nf3 is the modern continuation.}
O-O 12. Nf3 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 13. h4 b4 14. Na4 {[#]} e5 $146 ({
Predecessor:} 14... Nc5 15. Nxc5 dxc5 16. Qe1 a5 17. g5 Ba6 18. Rf2 h5 19. Rd2
Qc7 20. g6 fxg6 {1-0 (38) Sethuraman,S (2623)-Areshchenko,A (2656) Grosseto
Prugna 2015}) 15. f5 Nd4 16. Qd2 Nf6 17. Nxd4 exd4 18. Qxd4 Rb8 19. g5 hxg5 20.
hxg5 Ng4 21. Bf4 Bd7 {[#]} (21... Bxg5 $11 22. Qxd6 Bd7 23. Qxb8 (23. Bxg5 Qxg5
24. Qf4 Qf6 $11) 23... Qxb8 24. Bxb8 Rxb8) 22. Nc5 $1 Bb5 $1 $11 {[%cal Rb5f1]}
({Of course not} 22... dxc5 23. Qd1 $14) 23. Nd3 (23. Qd1 $11 {remains equal.}
Ne5 24. Nd3 Bxg5 25. Qh5) 23... Bxg5 {Strongly threatening ...Bf6.} 24. Qxd6
Bxf4 (24... Rc8 $1 $15 25. Qxd8 (25. Nxb4 $2 Bxf4 26. Qxf4 Qd4+ 27. Kh1 Bxf1
$19) 25... Bxd8) 25. Qxf4 Qd4+ 26. Kh1 Ne3 27. Rf2 {f6 is the strong threat.}
Rbc8 $2 {[%mdl 8192] [#]} (27... Rb6 $1 $15 {keeps the upper hand.} 28. e5 Nxc2
29. Qxd4 Nxd4 30. Nxb4 Rh6+ 31. Kg1 Ne2+ 32. Kf1 Nf4+ 33. Kg1 Rh4) 28. f6 $1
$18 {aiming for Qg5!} Rc6 {[%cal Rc6f6]} 29. Qg3 $40 {[%mdl 128] White is out
for blood.} (29. fxg7 $18 Kxg7 30. Bh3) 29... g6 $2 {[%mdl 8192] [#]} (29...
Rxf6 $16 {is more resistant.} 30. Rxf6 Qxf6) 30. Ne5 $1 Qd6 (30... Re8 $142 31.
Nxg6 (31. Nxc6 Bxc6 32. Qf4 Re5 $16) 31... Rxf6 32. Rxf6 Qxf6 33. Nf4+ Kh8 34.
Qxe3 Qh4+ 35. Kg1 Rc8) 31. Qg5 {Black must now prevent Nxg6.} Re8 32. Nxg6 {
Weighted Error Value: White=0.25/Black=0.74} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.20"]
[White "Chigaev, Maksim"]
[Black "Grandelius, Nils"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2639"]
[BlackElo "2662"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,61,20,17,23,44,37,43,39,85,25,32,21,43,40,39,31,46,51,60,55,54,59,56,
0,0,0,0,0,0,0,4,0,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3
Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 b5 6. Bb3 Bc5 7. Nd5 {[#] C77: Ruy Lopez: 3...
a6 4 Ba4 Nf6, unusual lines.} Na5 $146 ({Predecessor:} 7... d6 8. d3 h6 9. a4
Rb8 10. axb5 axb5 11. Be3 Bxe3 12. Nxe3 Be6 13. c3 O-O 14. O-O d5 {1/2-1/2 (84)
Bartel,M (2638)-Yilmaz,M (2630) Chess.com INT 2020}) 8. Nxe5 {aiming for Nxf6+.
} d6 {[#]} 9. d4 {White is slightly better.} Nxb3 {[#]} (9... dxe5 10. Nxf6+)
10. axb3 (10. Nc6 $1 $16 {[%cal Rc6d8]} Qd7 11. axb3) 10... dxe5 $11 11. Nxf6+
gxf6 12. dxc5 Qxd1+ 13. Kxd1 Rg8 14. g3 Bg4+ 15. Kd2 Bf3 16. Re1 Rg4 17. b4 ({
White should play} 17. Re3 $1 $14 O-O-O+ 18. Rd3) 17... Rxe4 {The position is
equal.} 18. Rxe4 Bxe4 {[%mdl 4096] Endgame KRB-KRB} 19. Kc3 Bb7 20. b3 Ke7 21.
Be3 Ke6 22. Kb2 Bd5 23. Rc1 Rb8 24. Ra1 Ra8 25. Rc1 Rb8 26. Ra1 Ra8 27. Rc1 Rb8
28. Ra1 Ra8 29. Rc1 Rb8 30. Ra1 Ra8 31. Kc3 {Weighted Error Value: White=0.07/
Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.21"]
[White "Dreev, Aleksey"]
[Black "Anton Guijarro, David"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "2635"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,80,0,10,-12,27,25,25,16,12,25,25,0,15,33,22,22,73,93,105,110,116,110,
130,64,121,110,220,189,197,199,206,60,52,59,87,50,182,193,170,120,194,116,128,
142,124,-4,14,-45,95,-38,-25,-1136,-1122,-29967,-29968,-11460,-11460,-5306,
-5306,-29982,-29983,-29983,-29984]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5.
a3 Bxc3+ 6. Qxc3 d6 7. Nf3 b6 8. g3 Bb7 9. Bg2 Nbd7 10. O-O c5 11. b3 {E32:
Nimzo-Indian: Classical (4 Qc2): 4...0-0.} a5 12. Rd1 {[#]} Qc7 $146 ({
Predecessor:} 12... Qe7 13. Bb2 d5 14. cxd5 Bxd5 15. Ne5 Bxg2 16. Nxd7 Qxd7 17.
Kxg2 Rfc8 18. Qf3 Qd5 19. dxc5 Qxf3+ 20. Kxf3 bxc5 21. Bxf6 gxf6 {1/2-1/2 (31)
Seo,J (2386)-Stupak,K (2547) Stockholm 2019}) 13. a4 {White has an edge.} Rac8
14. Bb2 d5 15. dxc5 bxc5 16. cxd5 exd5 17. e3 Qb6 (17... Rfe8 $1 $11) 18. Nh4
$16 Qe6 19. Qxa5 Ne4 20. Qe1 Rfe8 21. Qe2 (21. b4 $16) 21... g5 (21... Ndf6 $14
) 22. Nf3 $1 Qf5 (22... Ba6 $16 23. Qc2 g4) 23. b4 cxb4 {[#]} 24. Nd4 $1 {
[%cal Rd4f5]} Qf6 25. Bh3 (25. Bxe4 $18 Rxe4 26. Qb5 {[%mdl 64] Double Attack})
25... Ne5 $14 26. Bxc8 Bxc8 27. f3 Nd6 (27... Ba6 $14 28. Qg2 Nc5) 28. Nb5 $18
Nxf3+ 29. Kh1 Ne5 30. Rf1 ({Better is} 30. Nc7 $18 Rd8 31. Nxd5 {[%mdl 64]
Double Attack}) 30... Qe7 $16 31. Nxd6 Qxd6 {[#]} 32. Bd4 (32. Qh5 $1 $16)
32... Qg6 33. Bxe5 ({White should try} 33. Qg2 $11) 33... Rxe5 (33... Ba6 $15 {
keeps the upper hand.} 34. Qg4 Bxf1 35. Rxf1 Rxe5 36. Qxb4 Rxe3) 34. Qf3 (34.
Qd2 $16) 34... Bh3 $15 {And now ...Rf5! would win.} 35. a5 $2 {[%mdl 8192]} (
35. Rfe1 $11 Bf5 36. Qd1) 35... Rf5 $19 36. Qe2 Rxf1+ 37. Rxf1 Bxf1 38. Qxf1 b3
{[%cal Bb4b3,Bb3b2][%mdl 32]} 39. a6 b2 40. a7 Qe4+ {[%mdl 64] Double Attack. 
Weighted Error Value: White=0.83/Black=0.26} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.22"]
[White "Keymer, Vincent"]
[Black "Oparin, Grigoriy"]
[Result "1/2-1/2"]
[ECO "D87"]
[WhiteElo "2630"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 30,67,32,36,66,54,51,41,45,40,51,0,0,6,7,0,8,8,5,6,3,4,8,8,8,8,5,1,1,1,
3,0,2,1,7,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6.
bxc3 Bg7 7. Bc4 O-O 8. Ne2 c5 9. O-O Nc6 10. Be3 Bg4 11. f3 Na5 12. Bxf7+ Rxf7
13. fxg4 Rxf1+ 14. Kxf1 Qd6 15. Kg1 Qe6 16. Qd3 Qc4 {D87: Exchange Grünfeld:
Classical Line: Variations without ...cxd4.} 17. Qxc4+ Nxc4 18. Bf2 cxd4 {
White is slightly better.} 19. cxd4 e5 {[#]} 20. Rc1 $146 ({Predecessor:} 20.
d5 b5 21. h4 Bf8 22. Rc1 Ba3 23. Rc2 Nd6 24. Ng3 a5 25. Rc6 a4 26. Kf1 {
1/2-1/2 (51) Le,Q (2693)-Sutovsky,E (2687) Amsterdam 2012}) 20... Nd6 {The
position is equal.} 21. Bg3 Re8 22. Rc7 (22. Re1 {with more complications.}
Nxe4 23. Bxe5 Bxe5 24. dxe5 Kf8 25. h3) 22... Nxe4 23. Bxe5 ({And not} 23. Rxb7
exd4 24. Nf4 Nc5 $19) 23... Bxe5 24. dxe5 Rxe5 25. Rxb7 $11 {[%mdl 4096]
Endgame KRN-KRN} Rd5 {[%cal Rd5d1]} 26. h3 Rd2 {[%mdl 64] [#] Double Attack}
27. Nf4 Rxa2 28. Ne6 a5 29. g5 {aiming for Rg7+.} Ng3 30. Rg7+ Kh8 31. Ra7 {
[%cal Ra7a8] [#]} Kg8 $1 32. Rg7+ Kh8 33. Rd7 {[%cal Rd7d8]} Kg8 $1 34. Rg7+ {
Weighted Error Value: White=0.05/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.23"]
[White "Volokitin, Andrei"]
[Black "Hovhannisyan, Robert"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2652"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,61,7,26,26,12,29,37,33,30,78,11,21,21,30,14,16,17,4,13,27,8,50,50,50,
50,66,60,87,85,76,17,20,11,80,73,75,77,83,74,79,35,60,15,14,0,0,0,0,0,0,0,0,0]
} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a5 {C54: Giuoco
Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 7. Re1 {[#]} Be6 $146 ({
Predecessor:} 7... O-O 8. h3 h6 9. Bb5 Ba7 10. Nbd2 Ne7 11. d4 Ng6 12. a4 c6
13. Bd3 Re8 14. Bc2 {1-0 (36) Firouzja,A (2754)-Tari,A (2642) Stavanger 2021})
8. Bb5 {Black must now prevent d4.} O-O {White is slightly better.} 9. d4 Bb6
10. Bg5 ({White should play} 10. d5 $16) 10... h6 11. Bh4 exd4 12. cxd4 Bg4 13.
Bxc6 bxc6 14. Nc3 g5 15. Bg3 Bxf3 16. Qxf3 Bxd4 17. Rad1 Bxc3 18. Qxc3 Re8 19.
e5 Nh5 20. exd6 (20. Qxc6 $16 {[%cal Re5d6]} Nxg3 21. hxg3) 20... Rxe1+ $1 $11
21. Rxe1 Nxg3 (21... cxd6 $11 {keeps the balance.} 22. Qxc6 Nxg3 23. hxg3 Rc8)
22. dxc7 $16 ({But not} 22. fxg3 $6 cxd6 23. Qxc6 Rc8 $11) ({Much weaker is} 
22. hxg3 Qxd6 23. Rc1 a4 $11) (22. Qxc6 cxd6 23. hxg3 Rc8 $11) 22... Ne2+ 23.
Rxe2 Qxc7 {[%mdl 4096] Endgame KQR-KQR} 24. g3 Qd6 25. Re5 a4 26. Rc5 Rb8 {
The position is equal.} 27. Rxc6 Qd1+ 28. Kg2 Qd5+ {[%mdl 64] [#] Double Attack
} 29. Kg1 Qd1+ 30. Kg2 Qd5+ {[%mdl 64] Double Attack} 31. Kg1 {Weighted Error
Value: White=0.17/Black=0.14} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.24"]
[White "Sarana, Alexey"]
[Black "Praggnanandhaa R"]
[Result "1-0"]
[ECO "D41"]
[WhiteElo "2649"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,61,25,19,3,0,0,0,0,0,0,0,0,0,0,-9,-16,-20,15,-11,83,83,76,102,206,
217,206,195,204,197,502,503,1155,1111,1234,1224,1135,1003]} 1. d4 Nf6 2. c4 e6
3. Nf3 d5 4. Nc3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2
Bxd2+ 10. Qxd2 O-O 11. Bc4 Nd7 12. O-O b6 13. Rfe1 Bb7 14. Rad1 Rc8 {D41:
Queen's Gambit Declined: Semi-Tarrasch with 5 cxd5.} 15. Bb3 Re8 16. Re3 Nf6 {
The position is equal.} 17. Qe1 Qc7 18. h3 h6 19. d5 exd5 20. e5 {[#]} Nd7 $146
({Predecessor:} 20... Ne4 21. Bxd5 Bxd5 22. Rxd5 Nc5 23. Nd4 Rcd8 24. Nb5 Qc6
25. Rxd8 Rxd8 26. Nd6 Qd5 {0-1 (33) Chandra,A (2510)-Ruiz Castillo,J (2499)
Lichess.org INT 2021}) 21. Ba4 {Threatens to win with e6.} Bc6 22. Bc2 d4 (
22... a5 $11 {remains equal.}) 23. Nxd4 $16 Rxe5 24. Nf5 $1 {[%cal Rf5e7]
Hoping for Ne7+.} Rce8 {[#]} (24... Kf8 $16) 25. Qc3 $1 $18 {[%mdl 1024] White
has strong compensation.} Nf6 26. Rg3 $1 {[%csl LRg7,LRh6]} Nh5 {[#]} 27. Rg4
Kf8 $2 (27... R8e6 28. f4 Rxf5 29. Bxf5 Rd6 30. Rxd6 Qxd6) 28. Rc4 {White is
clearly winning.} Rc8 (28... R5e6 $142 29. Ba4 Bxa4) 29. Rd6 Re6 30. Rxe6 fxe6
31. Qa3+ {Weighted Error Value: White=0.02/Black=0.41} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.25"]
[White "Indjic, Aleksandar"]
[Black "Alekseenko, Kirill"]
[Result "1/2-1/2"]
[ECO "E13"]
[WhiteElo "2612"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,121,1,-17,-25,-19,-8,-30,-31,-60,-39,-63,-62,-58,-60,-57,-33,-38,-34,
-47,-45,-74,-47,-68,-47,-48,-46,-59,-47,-72,-39,-47,-39,-44,0,0,0,-39,0,-56,
-51,-67,-53,-53,-37,-30,-25,-52,-25,-46,0,0,0,0,0,-38,-23,-23,-23,-50,-23,-27,
0,0,0,0,0,0,0,0,0,-23,0,-63,-13,-16,0,0,0,-52,-52,-52,-52,-52,-52,-52,-52,-52,
-15,-35,-35,-45,0,-5,-5,-5,0,-5,0,0,0,-5,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4.
Nf3 b6 5. Bg5 Bb7 6. e3 h6 7. Bh4 g5 8. Bg3 Ne4 9. Qc2 Bxc3+ 10. bxc3 d6 11.
Nd2 Nxg3 {E13: Queen's Indian/Nimzo-Indian hybrid: 4 Nc3 Bb7 5 Bg5 h6 6 Bh4
Bb4.} 12. hxg3 Nd7 13. a4 a5 {Black has an edge.} 14. e4 Qe7 15. Bd3 h5 {[#]}
16. O-O-O $146 ({Predecessor:} 16. f3 O-O-O 17. O-O-O Rdg8 18. Nb3 g4 19. f4 h4
20. gxh4 Rxh4 21. g3 Rh3 22. Rhg1 {0-1 (72) Hayrapetyan,H (2426)-Sjugirov,S 
(2664) St Petersburg 2014}) 16... O-O-O 17. Nf1 Rh6 18. Ne3 Rdh8 19. Rhe1 h4
20. gxh4 Rxh4 21. g3 Rh3 22. Kb2 Kb8 23. Ka2 Ka7 24. Kb2 Qf6 25. Qe2 e5 26. Bc2
c5 {[%cal Re5d4]} 27. dxe5 Nxe5 28. Rd2 (28. Nf5 $5 {[%cal Rd1d6]} Qe6 29. Nxd6
$11) 28... Bc8 29. Red1 ({White should play} 29. Nf5 $11) 29... Rh2 $15 30. Nf5
Be6 31. Bb3 ({Of course not} 31. Rxd6 Rxf2 32. Rxe6 Rxe2 $17) (31. Nxd6 $2 Bg4
$19) 31... Bxf5 32. exf5 Qxf5 33. Bc2 Qe6 34. Kb3 Rd8 (34... b5 $5 35. axb5 {
[#]} Nxc4 $1 {[%mdl 512]} 36. Qxe6 (36. Qxc4 $2 a4+ 37. Kb2 Qxc4 $19) 36...
Nxd2+ 37. Rxd2 fxe6 38. Rxd6 c4+ {[%mdl 64] Decoy} 39. Kxc4 Rc8+ 40. Kd4 e5+ {
[%mdl 64] Decoy} 41. Kxe5 Rc5+ 42. Kd4 Rxb5 $15) 35. Rd5 f6 36. R1d2 g4 37. Qe3
Rh5 38. Qf4 Kb8 39. Kb2 Kc7 40. Kb3 Qe7 41. Bf5 Rg5 42. Rd1 Qf7 43. Rh1 Rh5 44.
Rhd1 Rh2 45. R5d2 Qg8 46. Re2 (46. Qe4 $11) 46... Qg5 47. Be6 Rhh8 48. Re4 Rh2
(48... Qxf4 {is interesting.} 49. Rxf4 f5 50. Bxf5 Rdf8 51. Be4 Rxf4 52. gxf4
Nd7) 49. Bxg4 (49. Re2 $11) 49... Qxg4 ({Inferior is} 49... Nxg4 50. Re7+ Kc8
51. Qe4 Qd5 52. Qxd5 Rd7 53. Qc6+ Kb8 54. Rxd7 Nxf2 55. Qb7#) 50. Qxg4 Nxg4 51.
Rxg4 Rxf2 $11 {[%mdl 4096] Endgame KRR-KRR} 52. Rh1 Kc6 53. Re4 d5 54. cxd5+
Kxd5 55. Rg4 {[#] Strongly threatening Rd1+.} Ke5 56. Rg7 {The position is
equal.} Rd3 57. Re1+ Kd6 {aiming for ...Rff3.} 58. Rg8 {Rd8+ is the strong
threat.} Kd7 {And now ...Rff3 would win.} 59. Rg7+ Kd6 60. Rg8 {Black must now
prevent Rd8+.} Kd7 {Hoping for ...Rff3.} 61. Rg7+ {Weighted Error Value:
White=0.13/Black=0.12} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.26"]
[White "Fedoseev, Vladimir"]
[Black "Pichot, Alan"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2704"]
[BlackElo "2628"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,75,32,58,14,19,16,16,10,20,16,20,21,18,-4,16,13,26,-19,4,0,163,166,
175,169,179,182,294,279,341,337,356,347,326,268,260,234,263,255,295,244,423,
373,418,327,516,532,757,752,718,720,853,823,826,318,302,293,397,397,760,760]} 
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. a4 Rb8 8. c3
d6 9. d4 Bb6 10. a5 {C78: Ruy Lopez: Archangelsk and Möller Defences.} Ba7 ({
Avoid the trap} 10... Bxa5 $2 11. dxe5 (11. d5 Ne7 $18) 11... dxe5 12. Qxd8+
Kxd8 13. Bd5 $18 (13. Bxf7 Bb6 $16)) 11. h3 Bb7 12. Re1 {The position is equal.
} O-O 13. Bg5 h6 14. Bh4 g5 15. Bg3 Re8 {Threatening ...exd4.} 16. dxe5 Nxe5
17. Bc2 {[#]} Nc4 $146 {[%cal Rf6e4]} ({Predecessor:} 17... Nh5 18. Bh2 Nxf3+
19. Qxf3 Qf6 20. Nd2 Nf4 21. Kh1 Kg7 22. Nf1 Ng6 23. Qxf6+ Kxf6 {1-0 (93)
Warmerdam,M (2475)-Georgescu,L (2200) Teplice 2019}) 18. b3 Nxe4 $2 {Black is
now going downhill.} (18... Ne5 $1 $11) 19. Bxe4 $18 Bxe4 20. bxc4 bxc4 21.
Nbd2 Bd3 (21... Bd5 {was worth a try.} 22. Qa4 Re6 23. Nxc4 Qe8) 22. Qa4 Rb5
23. Nxc4 Rxe1+ 24. Rxe1 Qf6 25. Rc1 h5 26. Ncd2 h4 {[#]} 27. Bh2 Rb2 {and if ..
.Rxd2 works, Black does fine.} 28. Kh1 Qf5 $2 (28... Bxf2 29. Qd7 Kh7) 29. Bg1
Kg7 30. Qa1 Qb5 (30... Rb8 $142 31. Re1 Bc5) 31. Re1 Kf8 32. c4 Qb4 33. Ne4
Bxe4 34. Rxe4 Bxf2 35. c5 $2 Qxe4 36. Qxb2 Bxg1 37. cxd6 {[%cal Rb2h8] [#]} ({
Less strong is} 37. Kxg1 Qe3+ 38. Qf2 Qc1+ 39. Kh2 Qf4+ 40. g3 Qf5 $18) (37.
Nxg1 Qc6 $16) 37... Bd4 (37... cxd6 38. Kxg1 Qc4) 38. Qxd4 {[%cal Rd4h8]
Weighted Error Value: White=0.28/Black=0.58} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.27"]
[White "Eljanov, Pavel"]
[Black "Brkic, Ante"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2691"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,73,19,18,13,16,12,12,16,16,8,24,18,28,25,37,4,34,16,37,37,39,42,38,33,
48,54,67,0,0,0,24,12,31,16,50,46,41,43,47,42,100,83,101,90,116,103,135,132,163,
158,172,158,182,187,229,225,492,493,490,499,479,430,442,433,1073,1043]} 1. e4
c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Nxd4 Ngf6 6. Bd3 {B51: Sicilian: Moscow
Variation (3 Bb5+) without 3...Bd7.} Nc5 7. Nc3 {[#]} g6 $146 ({Predecessor:} 
7... a6 8. O-O g6 9. Nb3 Nxd3 10. cxd3 Bg7 11. a4 Bg4 12. f3 Qb6+ 13. d4 Be6 {
1/2-1/2 (32) Tari,A (2625)-Duda,J (2743) Wijk aan Zee 2021}) 8. f3 {The
position is equal.} Bg7 9. Be3 O-O 10. Be2 Bd7 11. Qd2 Qa5 12. a4 {[%cal Ba2a4,
Ba4a5][%mdl 32]} a6 13. O-O Rac8 14. Rfb1 {b4 is the strong threat.} Ne6 15.
Nb3 Qc7 16. a5 Nc5 17. Nxc5 dxc5 18. Na4 Bxa4 19. Rxa4 Rfd8 20. Qe1 Nd7 21. Kh1
Nf8 22. c3 Nd7 23. f4 Nf6 24. Rba1 e5 (24... Qc6 $14) 25. f5 $16 gxf5 26. exf5
e4 27. Qh4 Qd7 28. Bg5 Rc6 {[#]} 29. Rf1 $1 Re8 30. Raa1 Rd6 31. Bf4 Rd5 {[#]}
32. Bc4 $1 Rxf5 $2 (32... Rd6 {was worth a try.} 33. Bxd6 Qxd6) 33. g4 $18 {
White is clearly winning.} Rxf4 34. Rxf4 Qc6 35. Kg1 Kh8 36. Raf1 {[%cal Rf4f6]
} Nd5 (36... Nd7 $142 37. Bxf7 (37. Rxf7 Ne5 $16) 37... Rb8) 37. Rxf7 {
Weighted Error Value: White=0.04/Black=0.20} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.28"]
[White "Howell, David W L"]
[Black "Yakubboev, Nodirbek"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2658"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,77,33,43,39,41,40,37,38,41,36,43,26,25,18,16,31,20,14,37,19,40,26,102,
89,95,82,164,163,258,252,229,226,312,335,310,237,397,380,381,392,394,379,481,
504,504,504,482,432,423,422,593,597,585,579,1445,1232,29987,500,29973,29974,
29973,1186,29974,29976,29975,29976,29971,29972,5631,5289]} 1. d4 d5 2. Nf3 Nf6
3. c4 e6 4. Nc3 h6 5. g3 Bd6 6. Bg2 {D37: Queen's Gambit Declined: 5 Bf4.} Nc6
7. O-O O-O 8. b3 {White is slightly better.} dxc4 9. bxc4 e5 10. e3 exd4 11.
exd4 {[#]} Re8 $146 ({Predecessor:} 11... Bg4 12. Be3 Bb4 13. Qb3 Bxc3 14. Qxc3
Qd7 15. Ne5 Nxe5 16. dxe5 Nh7 17. Bxb7 Rab8 {1-0 (35) Baryshpolets,A (2569)
-Kambrath,Y (2375) Lichess.org INT 2021}) 12. Be3 Bf5 13. Qb3 b6 14. c5 bxc5
15. dxc5 Rxe3 16. fxe3 $16 {Black is on the road to losing.} Bxc5 17. Kh1 {
aiming for Qb5.} Bxe3 (17... Ne7 $16 {is a better defense.}) 18. Rad1 $36 {
[%mdl 2048] Black is under strong pressure.} Qc8 (18... Qe8 {might work better.
}) 19. Nd5 Nxd5 20. Qxd5 Nb4 21. Qb3 {[%mdl 64] Double Attack} Bc5 22. a3 Be6
$2 (22... Bc2 23. Qc4 Bxd1) 23. Qc3 Na6 24. Ne5 c6 25. Nxc6 Qf8 26. Qa5 Bc4 {
and the idea ...Bb6 leaves Black hopeful.} 27. Ne5 Bb6 28. Qa4 Bxf1 29. Rxf1
Nc5 (29... Re8 $142 30. Nxf7 Nc7 31. Nxh6+ {[%mdl 64] Discovered Attack} gxh6)
30. Qc4 {[%cal Rf1f7]} Ne6 31. Nxf7 Qc8 32. Qe4 {Threatening mate with Nxh6+.}
Rb8 {[#]} 33. Bh3 (33. Nxh6+ $142 $1 {[%mdl 512]} Kh8 {[#]} 34. Qh4 $1 gxh6 35.
Qxh6+ Kg8 36. Bd5 Bf2 37. Bxe6+ Qxe6 38. Qxe6+ Kh7 39. Rxf2) 33... Nc5 {[#]} (
33... Qb7 $18 34. Nxh6+ Kh8 35. Nf7+ Kg8 36. Qxb7 Rxb7 37. Bxe6 Kh7) 34. Nxh6+
$1 {[%mdl 512]} Kh8 35. Nf7+ Kg8 36. Qh4 {[%csl Gf7][%cal Rh4h8]} Qb7+ 37. Bg2
{[%csl Gf7][%cal Rh4h8]} Qxf7 38. Rxf7 Kxf7 39. Qf4+ {Weighted Error Value:
White=0.22/Black=0.63} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.29"]
[White "Gukesh D"]
[Black "Sadhwani, Raunak"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2640"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,118,18,19,19,6,13,16,8,6,12,18,13,0,6,-8,0,0,42,29,40,40,40,40,29,32,
25,7,7,8,7,16,9,10,15,4,25,0,0,-74,-75,-64,-65,-70,-13,-79,-75,-89,-61,-66,-70,
-77,-85,-78,-84,-166,-157,-181,-185,-178,-171,-170,-148,-177,-143,-136,-138,
-212,-212,-222,-220,-345,-345,-337,-337,-345,-345,-345,-345,-345,-345,-345,
-345,-345,-345,-345,-345,-337,-330,-612,-598,-536,-535,-908,-882,-877,-359,
-1108,-877,-29978,-1239,-1014,-974,-838,-736,-7429,-5046,-4627,-4627]} 1. d4
Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+ Nc6 6. e3 O-O 7. Bd2 dxc4 {D38:
Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 8. Bxc4 Bd6 9. Qc2 e5 {
The position is equal.} 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. O-O Re8 {[#]} 13. h3
$146 ({Predecessor:} 13. Qb3 Be6 14. Bxe6 fxe6 15. Rad1 b6 16. Ne2 Qd5 17. Qxd5
exd5 18. Bc3 Bxc3 19. Nxc3 Rad8 20. Rd2 {1-0 (58) Liebeck,E (1273)-Faal,M 
(1169) Oberhof 2012}) 13... Be6 14. Bd3 Qd7 15. Rad1 Rad8 16. Be1 {Hoping for
Bxh7+!} Qe7 17. f4 Bxc3 18. Bxc3 Qc5 19. Rf3 {next Rg3 is good for White.} Bf5
$1 20. Bxf5 Rxd1+ 21. Qxd1 Qxf5 22. Rg3 h6 23. Kh2 c6 24. Be5 g6 25. Qd4 (25.
Rf3 $11 {remains equal.}) 25... Ne4 $1 $17 {Strongly threatening ...f6.} 26.
Rf3 f6 27. Bc7 b6 (27... c5 $15 28. Qa4 Re7) 28. Qa4 (28. Rf1 $1 $11 {keeps
the balance.}) 28... Re7 $1 {[%cal Re7c7]} 29. Bb8 Qc8 30. Be5 Nc5 $36 {
[%cal Rc5a4][%mdl 2048] Black has some pressure.} 31. Qc4+ Qe6 32. Qxe6+ Rxe6 {
[%mdl 4096] Endgame KRB-KRN} 33. Bc3 (33. Bb8 $17 {was called for.}) 33... Ne4
$1 $19 34. f5 gxf5 35. Be1 Re5 36. Rf4 Kf7 37. Kg1 Rd5 38. Kf1 Rd1 39. g4 (39.
Ke2 $17 {keeps fighting.} Rb1 40. b4) 39... Nc5 $1 40. Rxf5 {[#]} Rb1 $1 41. h4
(41. b3 $142) 41... Nd3 {[%mdl 64] Double Attack} (41... Rxb2 42. Rxf6+ Kxf6
43. Bc3+ Ke6 44. Bxb2 $11) 42. Ke2 {Bc3 is the strong threat.} Nxe1 {KRN-KR}
43. g5 hxg5 (43... Rxb2+ 44. Kxe1 hxg5 45. hxg5 $17) 44. hxg5 Nc2 ({Weaker is} 
44... Rxb2+ 45. Kxe1 c5 46. Rxf6+ Kg7 47. a3 $17) 45. Rxf6+ Kg7 46. Rxc6 Rxb2
47. Rc7+ Kg6 48. Rxa7 Nb4+ ({But not} 48... Kxg5 49. Kd3 $19) 49. Kf3 Nxa2 ({
Much less strong is} 49... Rxa2 50. Rb7 $19) 50. Kf4 $2 (50. Ke4) 50... Nc3 51.
Ra8 Rb4+ 52. Ke5 Re4+ 53. Kd6 Rc4 (53... Kxg5 $142 54. Rg8+ Kf5 55. Rf8+ Kg4)
54. Rg8+ $2 (54. e4) 54... Kf5 55. g6 b5 (55... Nb5+ $142 56. Ke7 Rc7+ 57. Kd8
Ke6 58. Rf8 Rb7 59. Re8+ Kd6 60. Kc8 Rd7 61. Kb8 Na7 62. Rc8 Nxc8 63. Kxc8 b5
64. Kb8 b4 65. Ka8 b3 66. g7 Rxg7 67. e4 b2 68. e5+ Kc6 69. e6 b1=Q 70. e7 Qb7#
) 56. Ke7 {Black is clearly winning.} b4 57. g7 {[#]} Kg6 $1 58. Ke6 Rc6+ 59.
Ke5 Rb6 {Weighted Error Value: White=0.52/Black=0.13} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.30"]
[White "Onyshchuk, Volodymyr"]
[Black "Erigaisi Arjun"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2622"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "191"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,191,0,0,6,0,0,0,0,0,0,0,0,-35,16,0,0,0,0,0,0,0,0,-3,28,23,40,29,15,
22,16,16,30,8,28,28,34,10,26,18,17,14,35,0,10,0,5,15,39,39,91,39,39,39,39,39,
39,39,39,0,39,39,36,6,13,8,65,33,70,7,12,4,12,4,12,12,12,12,137,12,12,12,12,0,
12,0,12,0,0,0,0,0,0,0,0,0,8,8,8,8,134,99,115,122,104,0,0,0,105,105,105,104,133,
109,132,108,166,166,159,154,173,133,133,136,124,110,179,105,102,93,95,82,111,
110,119,117,93,0,76,47,51,41,76,76,162,179,460,328,866,856,832,758,948,906,857,
784,1161,1429,1272,1201,1141,1108,1059,1027,958,977,820,731,1024,1050,3274,
2486,1397,5089,3154,2339,1927,1020,4779,3758,1933,1821]} 1. Nf3 c5 2. g3 g6 3.
Bg2 Bg7 4. d4 cxd4 5. Nxd4 Nc6 6. Nb3 Nf6 7. Nc3 d6 {A04: Unusual lines after
1 Nf3 and King's Indian Attack.} 8. h3 O-O 9. e4 Be6 {The position is equal.}
10. Nd5 $1 {[%mdl 4] outshines the older 10.0-0.} b5 11. O-O a5 {[#]} 12. c3
$146 ({Predecessor:} 12. a4 bxa4 13. Rxa4 Nd7 14. Be3 Qb8 15. c3 Rc8 16. Qc2
Nb4 17. Rxb4 axb4 18. Nxe7+ {1-0 (37) Ivanov,A (2657)-Vigorito,D (2322)
Manchester 1994}) 12... Nd7 ({Black should play} 12... a4 $15 13. Nxf6+ Bxf6)
13. Nd4 Bxd5 14. exd5 Nxd4 15. cxd4 Qb6 16. Be3 Rfc8 17. Qd2 b4 18. Rfc1 Nf6
19. Rxc8+ Rxc8 20. Rc1 Rxc1+ 21. Qxc1 Nd7 22. Qc4 Nf8 23. Kf1 f5 24. Ke2 Kf7
25. Kd3 h5 26. Bf3 Nd7 27. g4 hxg4 28. hxg4 Nf6 29. g5 Nd7 30. Bd1 Qb8 (30...
Qa7 $14) 31. Qc6 (31. f4 $16) 31... Nb6 $1 $14 32. f4 Qa7 33. Qb5 Qc7 34. Bb3
Qa7 35. Bd1 Qc7 36. Be2 Qa7 37. Qc6 a4 38. Kd2 Qa5 (38... a3 $11 39. Bb5 Nd7 $1
40. bxa3 (40. Qxd7 $2 Qxd7 41. Bxd7 b3 $19 {[%mdl 64] Promotion}) 40... Bxd4
41. Qxd7 Bxe3+ 42. Ke2 Qxd7 43. Bxd7 b3 44. axb3 (44. Kxe3 $2 bxa2 45. a4 a1=Q
$19) 44... Bxf4) 39. Kd1 ({Inferior is} 39. Bb5 b3+ 40. Kd3 Qxb5+ $3 {[%mdl
512]} 41. Qxb5 bxa2 $17) 39... b3 ({Much weaker is} 39... Nxd5 $6 40. Bc4 $16)
40. axb3 ({Better is} 40. a3 $1 $14) 40... axb3 $11 41. Bb5 {[%csl Gb5][%cal
Rc6e8]} Kg8 42. Ke2 Kh7 43. Bd2 Qa7 44. Bc3 Qb8 (44... Kh8 $11 {remains equal.}
) 45. Kd3 (45. Ba6 $1 $16) 45... Qa7 $1 46. Kd2 Bh8 47. Kd3 Bg7 48. Ke2 Kg8 49.
Qe8+ {[%mdl 64] Double Attack} Kh7 50. Qf7 Qa8 51. Bc6 ({Not} 51. Qxe7 $2 Nxd5
52. Qxd6 Nxc3+ 53. bxc3 Qe4+ 54. Kd2 Qc2+ 55. Ke3 Qxc3+ 56. Ke2 Qc2+ 57. Ke3
Qc3+ 58. Bd3 b2 $19) 51... Qa6+ 52. Kf2 Qc4 53. Be8 Qxd5 54. Qxg6+ Kg8 55. Kg3
Qe4 (55... Qh1 $1 $11) 56. Qf7+ $16 Kh8 {Threatening ...Qe3+.} 57. Qh5+ Kg8 {
[#]} 58. Qf7+ (58. Bf7+ $1 $16 Kf8 59. Bxb3 Qe3+ 60. Kg2) 58... Kh8 $11 {
Black wants to play ...Qe3+.} 59. Qh5+ ({White should try} 59. Bb5 $11) 59...
Kg8 $16 {[#]} 60. Bf7+ $1 Kf8 61. Bxb3 {[%csl Gb3][%cal Rh5f7]} Qe3+ 62. Kg2 {
[%csl Gb3][%cal Rh5f7]} d5 63. Qf3 Bxd4 (63... Qc1 $16 64. Qf1 Qe3) 64. Qxe3
$18 Bxe3 $16 {[%mdl 4096] Endgame KBB-KBN} 65. Kf3 Bc5 66. Bc2 {Black must now
prevent b4.} e6 67. b4 Bg1 68. Bd3 Kf7 (68... Nc8 $16 {was necessary.}) 69. Bb5
(69. Bd2 $18) 69... Nc8 70. Be5 Bb6 71. Bd7 Ne7 72. Bd6 Ng6 73. Ke2 Bd8 74. Kf3
(74. Ke3 {seems wilder.} Bb6+ 75. Kf3 Nh4+ 76. Ke2 Ng2 77. Bb5) 74... Bb6 75.
Kg3 Bd8 76. Bc8 Ne7 77. Ba6 {White now steadily converts the win.} Nc6 (77...
Ng6 $16) 78. Be2 $18 Kg6 $2 (78... e5) 79. Kh4 Nd4 $2 (79... Ne7 80. Bh5+ Kg7)
80. Bh5+ {White is clearly winning.} Kh7 81. Be8 Ne2 82. Bb5 Nc3 83. Bd7 d4 84.
Be5 Ne4 85. Bxe6 Kg6 86. Bxd4 Bc7 87. Be3 Nc3 88. Bc4 Nd1 89. Bc1 Bb6 90. Kg3
Ne3 91. Bb3 Nf1+ 92. Kg2 Ne3+ 93. Kf3 Ng4 94. Ba4 Bd4 95. Be8+ Kg7 96. b5 {
Weighted Error Value: White=0.14/Black=0.16} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.31"]
[White "Jobava, Baadur"]
[Black "Moussard, Jules"]
[Result "1-0"]
[ECO "C21"]
[WhiteElo "2582"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "27"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,27,8,9,18,18,-1,0,-25,-14,-28,-13,-8,-7,-5,228,237,334,320,447,443]} 
1. e4 e5 2. d4 exd4 3. Nf3 Bb4+ 4. Nbd2 {[#]} d5 $146 ({Predecessor:} 4... Nc6
5. Bd3 d6 6. O-O Bc5 7. a3 a6 8. Re1 Nge7 9. e5 dxe5 10. Nxe5 Nxe5 11. Rxe5 Bd6
{1/2-1/2 (27) Krawczyk,W (2212)-Lucki,S (2371) ICCF email 2018}) 5. Nxd4 Ne7 6.
c3 {C21: Danish Gambit.} Bc5 7. N2b3 Bb6 8. Bg5 {The position is equal.} O-O 9.
exd5 {[%mdl 64] Overworked Piece} Qxd5 10. Bxe7 Re8 11. Ne2 Qh5 {[#]} (11...
Qf5 $11 {and Black has nothing to worry.} 12. Bh4 Nc6) 12. Qd2 $1 $18 h6 {[#]}
(12... Nc6 {was worth a try.}) 13. O-O-O $1 Nc6 {[#]} (13... Qg4 14. Ng3) 14.
Nf4 $1 {Black got outplayed after the opening.  Weighted Error Value: White=0.
05/Black=0.63} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.32"]
[White "Shevchenko, Kirill"]
[Black "Kuybokarov, Temur"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2632"]
[BlackElo "2549"]
[Annotator "TA"]
[PlyCount "151"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,151,-20,-8,-14,-9,-9,-2,0,14,0,6,4,0,0,42,45,54,45,95,104,101,105,93,
65,67,76,74,42,46,41,89,85,95,85,91,60,58,57,57,48,86,47,47,38,48,42,56,70,141,
91,166,171,171,171,173,173,185,185,185,184,182,172,190,187,179,191,189,174,160,
179,175,169,225,225,224,218,194,217,191,216,222,161,163,0,228,226,224,193,181,
169,512,541,744,744,12841,12841,12842,12843,12844,12844,12845,12843,12846,
12843,12843,0,12844,12844,12845,0,12843,12843,12843,12843,12847,12847,12850,
27999,27999,27999,27999,27999,27990,27999,27991,27998,27992,27999,27993,27998,
27999,27997,27998,27998,27999,27999,27998,27998,27999,27999,27995,27999,27996,
27997]} 1. Nf3 d5 2. g3 g6 3. c4 dxc4 4. Na3 Nc6 5. Nxc4 Bg7 6. d3 {A09: Réti
Opening: 1 Nf3 d5 2 c4.} e5 7. Bd2 Nge7 8. b4 $5 {[%mdl 4] The position is
equal. A promising side line.} a6 9. Rc1 Be6 10. Bg2 O-O 11. O-O h6 12. a4 b5 {
[#]} 13. Na3 $146 ({Predecessor:} 13. axb5 axb5 14. Na5 Nxa5 15. bxa5 Nd5 16.
Rc5 Rb8 17. Qc1 Kh7 18. e4 Ne7 19. Bb4 {1-0 (35) Oparin,G (2654)-Frolyanov,D 
(2533) Bryansk 2021}) 13... Nd4 14. Nxd4 exd4 15. Bxa8 Qxa8 16. Re1 Bh3 {
[%csl Gh3][%cal Ra8g2]} 17. f3 c6 18. e4 {Hoping for Rc5.} dxe3 $1 19. Bxe3 Be6
20. Bc5 Re8 21. Nc2 Qd8 22. axb5 axb5 23. d4 Nf5 24. Qd3 Qd5 25. Rcd1 Ra8 26.
Ra1 Ra4 27. Kg2 Qd7 28. Ne3 Nd6 ({Better is} 28... Kh7 $14) 29. Qc2 Nb7 (29...
Rxa1 $16 30. Rxa1 Nc4) 30. Rxa4 $18 bxa4 31. Qxa4 Nxc5 32. bxc5 (32. dxc5 {
gets mated.} Qd2+ 33. Kh1 Qxe1+ 34. Kg2 Qe2+ 35. Kh1 Qxf3+ 36. Kg1 Qxe3+ 37.
Kg2 Qe2+ 38. Kg1 Bd4+ 39. Kh1 Qf3#) (32. Qa8+ Kh7 $11) 32... Qxd4 33. Qxd4 (33.
Qxc6 {leads to mate.} Qd2+ 34. Kh1 Qxe1+ 35. Kg2 Qe2+ 36. Kh1 Bh3 37. Qc8+ Bxc8
38. g4 Bd4 39. h4 Bxe3 40. h5 Qf1+ 41. Kh2 Bf4#) 33... Bxd4 {[%mdl 4096]
Endgame KRN-KB} 34. Ng4 Kg7 35. Rc1 Bd5 36. Nf2 g5 37. g4 h5 38. h3 f5 39. gxf5
Kf6 40. Rd1 Be3 (40... Be5 $142 41. Nd3 Bc3) 41. Rd3 Bf4 42. Ne4+ Kxf5 {[#]}
43. Nc3 $1 {[%cal Rc3d5]} Bc4 44. Rd4 Ba6 45. Rd8 Bc4 46. Rd4 (46. Re8 $142)
46... Ba6 $1 47. Ne4 Ke5 48. Rd8 Bc4 49. Kf2 Bd5 $2 {[#]} (49... Bf7 {is more
resistant.} 50. Rd6 g4 51. Rxc6 (51. hxg4 hxg4 52. Rxc6 gxf3 $16) 51... gxh3)
50. Nc3 $1 Be6 51. Ne2 Bxh3 52. Nxf4 Kxf4 {KR-KB} 53. Rd6 Ke5 54. Rxc6 Be6 55.
Rd6 Bd5 56. Kg3 Be6 57. Kf2 $2 ({White should play} 57. Rb6 $18 {aiming for c6.
} h4+ 58. Kf2) 57... h4 $2 {[%mdl 8192]} (57... Bd5 $11 58. Rh6 Bb7) 58. Rb6
Kd5 59. Rd6+ Ke5 60. Rd8 Bd5 61. Rh8 Kd4 62. Rh5 Kxc5 63. Rxg5 Kd4 {White
mates.} 64. Rh5 Be6 65. Rxh4+ Ke5 66. Ke3 Bd7 67. Rc4 Bf5 68. Rc5+ Kf6 69. Kf4
Bd7 70. Rd5 Bc8 71. Rd6+ Kf7 72. Ke5 Bh3 73. f4 Ke7 74. Rh6 Bf1 75. Rh7+ Kf8
76. Ke4 {Weighted Error Value: White=0.27/Black=0.19} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.33"]
[White "Van Foreest, Jorden"]
[Black "Ivic, Velimir"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2691"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,69,27,25,0,0,0,33,19,31,17,47,49,47,12,7,4,0,7,11,0,0,-20,-11,-8,-16,
-31,10,0,0,0,0,0,0,0,0,0,32,7,12,4,4,0,0,0,47,12,12,11,11,11,18,0,0,0,0,0,0,0,
0,0,0,0]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. h4 Bg7 6. h5 {A16:
English Opening: 1...Nf6 with ...d5.} Nc6 7. g3 Nxc3 (7... Bf5 $5 {[%cal Rc6b4]
} 8. Bg2 Ncb4 $11) 8. bxc3 {White is slightly better.} e5 {[#]} 9. Qc2 $146 ({
Predecessor:} 9. Bg2 e4 10. Nd4 Nxd4 11. cxd4 O-O 12. e3 Re8 13. Rb1 b6 14.
hxg6 hxg6 15. O-O {0-1 (42) Dill,X (2110)-Sorokin,A (2425) Prague 2016}) 9...
Bf5 10. d3 Qe7 {[#] White must now prevent ...e4.} 11. Ng5 (11. Bg5 {is
interesting.} f6 12. Be3 Bd7 13. h6 Bf8 14. Bg2) 11... Bf6 12. Ne4 Bxe4 13.
dxe4 O-O 14. a4 {aiming for Ba3.} Rfd8 15. Bh3 Qc5 16. Kf1 Qc4 17. Kg2 Nb4 18.
Qb1 Na6 19. Be3 Nc5 20. Bxc5 Qxc5 21. Qb3 Qc6 22. Bg4 Bg7 (22... Rd6 {with
more complications.} 23. Bf3 Rad8 24. hxg6 hxg6 25. a5 b6) 23. a5 b5 (23... Rd2
{feels hotter.} 24. Ra4 b5 25. axb6 axb6 26. Rc4 Qb7) 24. axb6 axb6 25. Rxa8
Qxa8 26. Qc4 c6 (26... Qb7 {is more complex.} 27. Rb1 Bf8 28. Bf3 c6 29. Ra1
Rd2) 27. Qb4 Qa7 {The position is equal.} 28. Qb2 b5 29. Ra1 Qc5 30. Qb3 Bf8
31. Ra6 Kg7 32. Ra1 Be7 33. Ra6 Bf8 34. Ra2 Be7 35. Ra6 {Weighted Error Value:
White=0.08/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.34"]
[White "Martirosyan, Haik M."]
[Black "Svidler, Peter"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "2624"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,5,2,0,0,0,0,0,17,-4,0,-10,-7,-10,-13,-8,-5,-8,-18,-18,-5,-41,-29,
-47,-42,-23,-15,-33,0,0,0,-8,-8,-8,-8,-8,-8,-11,-2,-7,0,-8,-4,-8,0,0,0,0,0,-8,
-8,-8,-8]} 1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. d3 Nf6 6. e3 {A36:
Symmetrical English vs ...g6: 4 Bg2 Bg7.} e6 7. Nge2 O-O 8. O-O b6 9. a3 Bb7
10. b4 {[#]} d5 $146 ({Predecessor:} 10... Rb8 11. Rb1 d6 12. b5 Ne7 13. Bxb7
Rxb7 14. Bb2 Rd7 15. Qc2 Qa8 16. e4 d5 {1/2-1/2 (34) James,G (2144)-Vogt,L 
(2362) Rhodes 2019}) 11. bxc5 dxc4 12. dxc4 Qe7 13. cxb6 axb6 14. Rb1 Rfd8 15.
Qc2 Ne5 16. Rxb6 Bxg2 17. Kxg2 Nxc4 (17... Qc5 {looks sharper.} 18. Rb5 Qc6+
19. f3 Nxc4 20. Nd4 Qc7) 18. Rb3 Nxa3 (18... Qc5 {with more complications.} 19.
Rd1 Qc6+ 20. f3 Nd5 21. Nxd5 Rxd5 22. Kf2 Rc5) 19. Bxa3 {The position is equal.
} Rxa3 20. Rd1 Rxb3 21. Qxb3 Rxd1 22. Qxd1 Qb7+ 23. Kg1 {[#] Qd8+ is the
strong threat.} Qc7 24. Qa4 Bf8 (24... h6 {keeps more tension.} 25. Qa8+ Kh7
26. Qf3 Qc4 27. Qb7 Kg8) 25. Qf4 Qxf4 (25... Qe7 {is more complex.} 26. Qf3 Kg7
27. Qc6 Qc5 28. Qxc5 Bxc5 29. Nf4 Nd7) 26. Nxf4 Bd6 27. Nd3 Kg7 28. Kg2 Nd7 29.
Kf3 Ne5+ 30. Nxe5 Bxe5 {Weighted Error Value: White=0.06/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.35"]
[White "Matlakov, Maxim"]
[Black "Antipov, Mikhail Al."]
[Result "1/2-1/2"]
[ECO "D78"]
[WhiteElo "2682"]
[BlackElo "2619"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,60,15,8,22,14,0,0,0,9,25,0,0,0,0,0,0,0,26,17,19,7,13,0,0,0,0,0,0,0,7,
3,15,25,19,-4,3,2,3,3,3,2,2,2,2]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 c6 5. Nc3
d5 6. Qb3 dxc4 7. Qxc4 O-O 8. Bg2 Bf5 9. O-O Nbd7 {[%cal Bb8d7,Bd7b6,Bb6c4]
[%mdl 32]} 10. Re1 Ne4 {D78: Fianchetto Grünfeld: 6 0-0 c6.} 11. Qb3 Qa5 {
11...Qb6 is the fancy move.} 12. Bf4 Nb6 {[#]} 13. a4 $146 ({Predecessor:} 13.
Rec1 Rfd8 14. e3 Be6 15. Qc2 Nxc3 16. bxc3 c5 17. Ng5 Bd5 18. e4 Bc4 19. Nf3
cxd4 20. cxd4 {1/2-1/2 (33) Wojtaszek,R (2698)-Shankland,S (2720) Struga 2021})
13... Rac8 14. Red1 Nxc3 15. Qxc3 Qxc3 16. bxc3 Rfd8 17. a5 Nc4 18. Rdc1 h6 19.
h4 c5 20. e3 Be4 21. g4 Rc6 22. Ne5 Bxg2 23. Kxg2 Nxe5 24. dxe5 c4 25. Rab1 Rd7
26. Rb4 {The position is equal.} Rc5 27. Rcb1 Bxe5 28. Bxe5 Rxe5 29. Rxb7 Rxb7
30. Rxb7 Rxa5 {A rather calm draw.  Weighted Error Value: White=0.06/Black=0.03
} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.36"]
[White "Ter-Sahakyan, Samvel"]
[Black "Gelfand, Boris"]
[Result "1-0"]
[ECO "B57"]
[WhiteElo "2607"]
[BlackElo "2680"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,86,29,27,26,29,38,10,43,45,49,47,51,16,20,2,58,41,25,28,20,12,53,37,
45,53,53,56,46,46,37,53,84,83,59,62,81,51,100,106,242,227,233,233,242,238,184,
206,248,229,326,321,315,298,431,420,407,358,765,426,386,412,947,600,950,941,
1407,1291,2261,1937,2756,2620,29988,29988,29989]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4
4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nb3 e6 8. Bf4 (8. O-O {seems wilder.} a6
9. a3 Qc7 10. f4 b5 11. Bd3) 8... Qd8 {[#] B57: Classical Sicilian: Sozin with
6...Qb6.} 9. Be2 $146 ({Predecessor:} 9. Qe2 a6 10. a4 Be7 11. Rd1 Qc7 12. O-O
O-O 13. Bg5 Bd7 14. f4 h6 15. Bh4 Rac8 16. Bd3 {0-1 (60) El Homsy,I-Guadalpi,D
(2240) Paris 1992}) 9... a6 10. a4 b6 {The position is equal.} 11. Qd2 Be7 12.
O-O-O {[%cal Rf4d6]} Ne5 13. Bg3 Bb7 14. f4 Nc6 ({Better is} 14... Ned7 $11)
15. e5 dxe5 16. fxe5 Nd7 17. Bf3 Bg5 18. Bf4 Bxf4 19. Qxf4 {Black must now
prevent Ne4.} O-O 20. Rd6 Qc7 21. Bxc6 Bxc6 22. Rhd1 Nc5 23. Nxc5 bxc5 {
[%cal Bb6c5,Bc5c4][%mdl 32]} 24. R1d3 $36 {[%mdl 2048] White has good play.}
Rad8 25. Qe3 c4 26. Rxd8 Rxd8 {[#] A mistake that costs the game.} (26... cxd3
$16 27. Rxf8+ (27. Rxd3 Bxg2 28. Rd6 Rb8 $11) 27... Kxf8) 27. Qa7 $1 $18 {
[%cal Ra7c7][%mdl 512]} Qc8 (27... Qb8 28. Rxd8+) 28. Rxd8+ {[%mdl 64]
Overworked Piece} Qxd8 29. Qxa6 Bxg2 30. Qxc4 h5 31. Qf4 h4 (31... Ba8 $142 32.
b4 f5 33. exf6 Qxf6) 32. b4 h3 33. a5 Qb8 (33... Qc7 $142) 34. Ne4 f6 35. Nd6
Qc7 $2 {[#]} (35... f5 36. Qc4 Bd5) 36. Kb2 f5 37. Qe3 Be4 (37... Qc6 $142 38.
Qb3 Bd5) 38. c4 Bg2 39. a6 Qe7 40. b5 {[%cal Bb4b5,Bb5b6,Bb6b7][%mdl 32]} Qh4
41. b6 f4 42. Qd2 Qh5 43. b7 Qxe5+ {Weighted Error Value: White=0.35/Black=0.55
} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.37"]
[White "Mamedov, Rauf"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2673"]
[BlackElo "2617"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,66,18,30,0,0,0,9,3,11,16,13,0,14,0,0,0,0,-9,0,-23,-24,-25,0,0,0,0,0,
0,0,0,-6,0,14,14,24,20,14,-34,30,0,4,0,0,5,1,0,33,0,0,0,0,0,0,0,0,0,0]} 1. e4
e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3]
[%mdl 32]} O-O {6...a5 is the recent fashion.} 7. h3 {C54: Giuoco Piano: 4 c3
Nf6, main lines with 5 d4 and 5 d3.} a5 8. O-O Be6 9. Bb5 Ba7 10. Re1 Ne7 11.
Nf1 c6 12. Ba4 Ng6 13. Ng3 d5 14. exd5 Nxd5 15. d4 (15. Bb3 {feels hotter.} Qc7
16. Ng5 Bd7 17. Nh5 h6 18. Nf3) 15... exd4 16. Nxd4 {[#]} Bxd4 $146 ({
Predecessor:} 16... Qc7 17. Qf3 Bxd4 18. cxd4 Qb6 19. Rd1 Rad8 20. Bb3 Nc7 21.
Nf5 Bxb3 22. axb3 Qb5 {1/2-1/2 (51) Duda,J (2743)-Carlsen,M (2862) Wijk aan
Zee 2021}) 17. Qxd4 Ndf4 18. Qxd8 Rfxd8 19. Bc2 Nd3 20. Bxd3 Rxd3 21. Be3 Rd7
22. Ne4 Bd5 23. Nc5 Re7 24. b3 f6 (24... Nh4 $15 25. Bd2 Rxe1+ 26. Bxe1 Nxg2)
25. c4 Bf7 26. Red1 b5 27. cxb5 cxb5 28. Rd6 Rc8 29. Rad1 h5 {Strongly
threatening ...Rxe3!The position is equal.} 30. Rd8+ Rxd8 31. Rxd8+ Re8 $1 {
[%cal Re8d8]} 32. Rd7 Nh4 33. a3 Nf5 {Not much happened in this game. 
Weighted Error Value: White=0.08/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.38"]
[White "Zvjaginsev, Vadim"]
[Black "Cori, Jorge"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2609"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,62,8,18,0,5,-1,0,-21,0,-29,24,22,24,29,36,31,33,-4,0,0,0,-20,-3,-37,
-35,-41,0,0,0,0,0,0,35,42,58,44,90,53,23,14,47,50,54,37,30,30,23,8,9,0,10,0,13,
0,39]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Be3 e6 5. Nd2 Nd7 6. g4 {B12: Caro-Kann:
Advance Variation.} Bg6 7. Ne2 f6 8. f4 Nh6 9. h3 fxe5 (9... Qb6 $142) 10. fxe5
$11 {[#]} Be7 $146 {[#] And now ...Bh4+ would win.} ({Predecessor:} 10... Qb6
11. Nf4 c5 12. c3 Bf7 13. b4 c4 14. Nf3 a5 15. Qa4 Qd8 16. b5 Nb6 {1/2-1/2 (23)
Zvjaginsev,V (2674)-Riazantsev,A (2632) Ramenskoe 2006}) 11. Nf4 O-O 12. Nxg6 (
{Of course not} 12. Nxe6 Bh4+ 13. Ke2 Qb6 $17) 12... hxg6 13. Qe2 Bh4+ 14. Kd1
c5 15. dxc5 Rc8 16. Nb3 Nf7 17. Bd4 Ng5 {[#] Threatens to win with ...Ne4.} 18.
Bg2 Ne4 19. Bxe4 dxe4 20. Kc1 $1 Qg5+ 21. Kb1 Qf4 22. a3 Qf3 23. Qxf3 (23. Rh2
{is interesting.} Be7 24. Qe1 Qf1 25. Ka2 Qc4 26. Qe2) 23... exf3 24. Rf1 Be7 {
[%cal Re7c5]} 25. Ka2 Bxc5 26. Nxc5 Nxc5 27. Rae1 Rf4 28. Be3 Rf7 {The
position is equal.} 29. Bd4 Rf4 30. Be3 Rf7 31. Bd4 Rf4 {Weighted Error Value:
White=0.10/Black=0.12} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.39"]
[White "Sethuraman, S.P.."]
[Black "Demchenko, Anton"]
[Result "0-1"]
[ECO "C91"]
[WhiteElo "2620"]
[BlackElo "2651"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 33,74,2,8,12,33,28,43,41,32,37,40,41,37,0,0,0,17,0,0,0,0,0,0,0,0,-81,
-60,-83,-81,-98,-91,-137,-135,-145,-141,-135,-133,-1043,-1036,-993,-964,-1391,
-986]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6
8. c3 O-O 9. d4 Bg4 10. Be3 Bh5 11. h3 exd4 12. cxd4 Na5 13. Bc2 Nc4 14. Bc1 c5
15. b3 {[%cal Bb2b3,Bb3a4,Ba4a5][%mdl 32]} Nb6 16. Nbd2 Nfd7 17. Bb2 Re8 18. a4
{C91: Closed Ruy Lopez: 7...d6 8 c3 0-0 9 d4.} bxa4 19. bxa4 Rb8 20. Ra2 {
White is slightly better.} cxd4 {[#]} 21. a5 $146 ({Predecessor:} 21. g4 d3 22.
Bxd3 Nc5 23. Bc2 Bg6 24. Nd4 Qc7 25. f4 h6 26. Nf5 {1/2-1/2 (26) Van der Wiel,
J (2487)-Van den Doel,E (2587) Leiden 2007}) 21... d3 22. Bxd3 Nc5 23. Bc2 ({
Much worse is} 23. axb6 Nxd3 24. Re3 Nxb2 $15) 23... Nbd7 24. Nc4 Nf6 25. g4
Bg6 {[%cal Rf6e4]} 26. Bxf6 Bxf6 27. Nxd6 Re6 {[%cal Re6d6]} 28. e5 Bxe5 $1 29.
Bxg6 (29. Rxe5 $11 {keeps the balance.} Rxd6 30. Re8+ Qxe8 31. Qxd6) 29... Bxd6
$17 ({But not} 29... fxg6 $6 30. Rxe5 Rxd6 31. Re8+ $1 Qxe8 32. Qxd6 $11) 30.
Bc2 Rxe1+ 31. Qxe1 g6 32. Qe3 {[#]} Ne6 $1 33. Bb3 Bf4 34. Qc3 Rc8 $36 {
[%cal Bb8c8,Bc8c1,Bc1c3][%mdl 2080] White is under strong pressure.} 35. Qb2 {
[%mdl 8192]} (35. Bc4 $17) 35... Rc1+ $19 {Black is clearly winning.} 36. Kg2
Qd3 {[%csl Gc1][%cal Rd3f1]} 37. Nh2 Rc3 {Weighted Error Value: White=0.62/
Black=0.02} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.40"]
[White "Abasov, Nijat"]
[Black "Henriquez Villagra, Cristobal"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2638"]
[BlackElo "2608"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,76,20,18,12,23,18,8,8,21,0,51,25,32,0,45,32,31,25,30,41,38,22,27,30,
21,14,58,12,4,0,0,0,0,0,0,0,26,9,60,0,0,0,0,0,0,0,0,0,0,0,0,-4,0,0,0,-8,0,0,0]
} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Bg5 Nbd7 6. cxd5 exd5 7. e3 Be7 8.
Qc2 Nh5 9. Bxe7 Qxe7 10. O-O-O Nb6 11. Bd3 {is now debated instead of 11.h3.
D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2).}
Bg4 12. Kb1 ({Much worse is} 12. Bxh7 g6 $17) 12... g6 13. Rc1 Bxf3 14. gxf3
Nf6 (14... Qh4 $11) 15. Ka1 {[#]} Nfd7 $146 ({Predecessor:} 15... Rd8 16. f4
Kf8 17. h4 Nc8 18. Rce1 c5 19. dxc5 Qxc5 20. f5 Nd6 21. Rd1 Re8 {1-0 (38)
Hochstrasser,M (2358)-Godena,M (2548) Switzerland 2009}) 16. f4 f5 17. Nb1 {
[%cal Bc3b1,Bb1d2,Bd2f3,Bf3e5][%mdl 32]} Qh4 18. Qe2 Nf6 19. Nd2 Ne4 20. Bxe4
dxe4 21. f3 exf3 22. Nxf3 Qf6 23. Ne5 O-O-O 24. b4 Kb8 $1 25. b5 cxb5 26. Qxb5
Qe6 27. Rc5 Rd5 28. Rhc1 Rhd8 ({Better is} 28... Ka8 $11) 29. R1c2 ({White
should try} 29. Qb2 $14) 29... Rxc5 $11 {The position is equal.} 30. dxc5 (30.
Qxc5 $2 {is the wrong capture.} Rc8 $19) 30... Rd1+ 31. Kb2 Qd5 32. Qb4 Nc8 33.
Ka3 Ka8 34. h4 a6 35. Nc4 Qc6 36. Ne5 Qd5 37. Nc4 Qc6 38. Ne5 Qd5 {Weighted
Error Value: White=0.10/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.41"]
[White "Bjerre, Jonas Buhl"]
[Black "Niemann, Hans Moke"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2569"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,114,7,0,12,13,21,23,28,18,28,39,43,31,32,36,50,16,54,15,47,7,12,8,7,
0,0,0,0,-29,-29,-37,-51,-62,-65,-62,-43,-34,-20,-78,-72,-87,-81,-89,-84,-80,
-76,-96,-93,-97,-68,-55,-48,-91,-47,-60,-48,-129,-125,-135,-138,-134,-144,-210,
-159,-144,-91,-106,-95,-86,-87,-100,-104,-910,-881,-12837,-12838,-12838,-12839,
-12839,-12839,-12840,-12840,-12841,-12841,-12842,-12843,-12843,-12843,-12843,
-12843,-12843,-12843,-12844,-12844,-12846,-12846,-12847,-12845,-12845,-12846]} 
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 {
7...d6 is better than 7...0-0.} 8. a3 O-O 9. Nc3 Na5 {C77: Ruy Lopez: 3...a6 4
Ba4 Nf6, unusual lines.} 10. Ba2 c5 11. b4 Nc6 {White has an edge.} 12. Nd5 Be6
13. c3 h6 14. Be3 Ng4 15. Bd2 Re8 {[#]} 16. a4 $146 ({Predecessor:} 16. Ne1 Bf8
17. Nc2 Ne7 18. Nc7 Qxc7 19. Bxe6 Nxh2 20. Bxf7+ Kxf7 21. Kxh2 Kg8 22. Ne3 {
0-1 (41) Keller,P (2285)-Rafiee,M (2318) Germany 2016}) 16... cxb4 17. cxb4 Nf6
18. axb5 axb5 19. Bb3 Rc8 20. Ra6 Bf8 21. Nxf6+ Qxf6 22. Bxe6 Qxe6 23. Rb6 d5
$1 24. Rxb5 dxe4 25. dxe4 Qc4 26. Rb7 Red8 {Strongly threatening ...Qa6.} 27.
Qb1 (27. b5 $11 Na5 28. Nxe5 Qxe4 29. Rd7 Qxe5 30. Bxa5 Rxd7 31. Qxd7) 27...
Qa6 $17 28. Rxf7 Kxf7 29. b5 {[%mdl 64] Double Attack} Qa4 30. bxc6 {Black
should prevent Qb7+.} Kg8 31. Rc1 {[#]} Bd6 {[%mdl 1024] Black has strong
compensation.} 32. Qb6 Bc7 $36 {[%mdl 2048] Black has good play.} 33. Qe3 Rb8
34. h4 Qa2 35. Bc3 Rb5 36. Nd2 ({Better is} 36. Ba1 $15) 36... Bb6 37. Qe1 Rc5
38. Nf3 Rxc6 39. Nxe5 {[#]} (39. Bd2 $17 Rxc1 40. Qxc1) 39... Rf8 $1 {[%mdl
512]} 40. Nf3 Rg6 (40... Qa3 $142 {Hoping for ...Rfc8.} 41. Bd2 Rxf3 42. Rxc6
Bxf2+ 43. Qxf2 Rxf2 44. Kxf2 Qd3 45. Rc8+ Kh7) 41. Bd4 Rxf3 42. Bxb6 {
Threatening h5.} Rf4 43. Bc7 Rxh4 44. Bg3 $2 {[%mdl 8192] [#] Loses the game.}
(44. Rc3 $17) 44... Rxg3 $1 $19 {[%mdl 512] Black is clearly winning.} 45. fxg3
{[%mdl 4096] Endgame KQR-KQR} (45. Qb4 Rd3) 45... Qa7+ 46. Qf2 {[#]} Rh1+ $1 {
[%mdl 576] Deflection} 47. Kxh1 Qxf2 {KQ-KR} 48. Kh2 Qe2 49. Rc3 Qxe4 50. Rf3
h5 51. Rf4 Qe5 52. Ra4 Kh7 53. Kh3 Kh6 54. Kh2 Qd6 55. Re4 g5 56. Kh3 g4+ 57.
Kh2 Kg5 {Weighted Error Value: White=0.38/Black=0.07} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.42"]
[White "Nguyen, Thai Dai Van"]
[Black "Kovalev, Vladislav"]
[Result "0-1"]
[ECO "D76"]
[WhiteElo "2577"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,60,33,6,19,0,10,-18,-7,2,0,0,0,-6,0,0,0,-30,0,0,0,0,0,0,0,-40,0,-57,
-57,-46,-50,-195,-100,-119,-122,-128,-121,-211,-215,-195,-166,-172,-173,-167,
-170]} 1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d5 6. cxd5 Nxd5 7. O-O
Nc6 8. e3 Nb6 9. Nc3 Re8 10. Re1 a5 {D76: Fianchetto Grünfeld: Main Line with
7...Nb6.} 11. h3 a4 {[#]} 12. Nh2 $146 ({Predecessor:} 12. a3 Bd7 13. e4 Na5
14. Bf4 Nb3 15. Rb1 c5 16. dxc5 Nxc5 17. Qe2 Qc8 18. Kh2 {0-1 (42) Dziuba,M 
(2523)-Salem,A (2834) Chess.com INT 2017}) 12... Ra5 {The position is equal.}
13. Rb1 Bd7 14. b4 axb3 $1 15. axb3 {[%cal Ba2b3,Bb3b4,Bb4b5,Bb5c6,Bc6b7][%mdl
32]} Bf5 16. b4 Ra8 17. Rb3 Be6 18. Rb1 Bf5 $36 {[%mdl 2048] Black has the
initiative.} 19. b5 Bxb1 20. bxc6 Bf5 21. cxb7 Ra7 22. Ng4 (22. e4 $11 Bd7 23.
e5) 22... Qd7 $15 23. Qb3 Rb8 24. Ne4 (24. Rd1 $15) 24... Qa4 ({Better is} 
24... Bxe4 $19 25. Bxe4 e6) 25. Nc5 Qxb3 26. Nxb3 {[#]} Nd7 $1 27. Nh2 (27. Bd2
$17 {was worth a try.} Rbxb7 28. Bxb7 Rxb7 29. Na5) 27... Bc2 $19 {Black is
clearly better.} 28. Nd2 Ra6 29. Bb2 {With the idea Rc1.} c6 30. Rc1 Ba4 {
Weighted Error Value: White=0.28/Black=0.10} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.43"]
[White "Zhou, Jianchao"]
[Black "Bartel, Mateusz"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2629"]
[BlackElo "2597"]
[Annotator "TA"]
[PlyCount "139"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,139,-28,-23,-11,-26,-70,-74,-68,-75,-75,-52,-24,33,36,61,76,101,75,67,
51,70,61,60,54,64,62,60,9,34,29,178,179,158,162,169,129,166,165,171,168,164,
148,157,158,157,147,139,128,128,125,130,120,122,115,121,127,125,114,114,111,
116,81,74,74,91,81,91,91,91,91,91,91,91,91,91,91,91,91,91,91,91,91,116,91,109,
109,150,119,167,164,157,157,157,158,170,162,162,162,162,162,162,162,212,212,
212,212,212,212,212,212,212,212,212,212,797,789,819,623,756,617,684,660,583,
562,522,204,6436,6320,6083,6001,4594,1445]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3
dxc4 5. e4 b5 $1 {[%cal Bb7b5,Bb5b4][%mdl 32]} 6. Be2 {D15: Slav Defence: 4
Nc3 a6 and gambit lines after 4 Nc3 dxc4.} e6 7. a4 $5 {[%mdl 4] An
interesting side line.} b4 {[%cal Rb4c3]} 8. e5 {Black is better.} bxc3 9. exf6
cxb2 10. fxg7 Bxg7 ({Inferior is} 10... bxc1=Q 11. gxh8=Q Qa5+ 12. Kf1 $16) ({
Better is} 10... bxa1=Q $11 11. gxh8=Q Qa5+ 12. Nd2 c3) 11. Bxb2 $14 Qa5+ 12.
Nd2 $1 Ba6 {aiming for ...c3.} 13. Rc1 O-O 14. O-O Nd7 $1 15. Bxc4 Bxc4 16.
Nxc4 Qd5 17. Ne3 {[#]} Qe4 $146 ({Predecessor:} 17... Qd6 18. Qf3 Rac8 19. Nc4
Qd5 20. Ba3 Qxf3 21. gxf3 Rfd8 22. Be7 Bxd4 23. Bxd8 Rxd8 {1-0 (50) Van
Foreest,J (2698)-Liang,A (2587) Chess24.com INT 2021}) 18. a5 (18. Re1 $14)
18... Rfb8 (18... c5 $5) 19. Ba1 {Black must now prevent Rc4.} Rb5 {[#]} (19...
Nf6 $1 $11 {and Black has nothing to worry.}) 20. Rc4 $1 $36 {[%cal Bc1c4,
Bc4a4,Ba4a5][%mdl 2080] Hoping for d5. White is really pushing.} Rxa5 21. Bc3
Rd5 22. Nxd5 Qxd5 23. Ra4 Nb6 24. Ra5 Qd8 25. Qd3 Nd5 26. Bd2 Ne7 27. Qa3 Nf5
28. Rxa7 Rxa7 29. Qxa7 Bxd4 30. Qa3 Qd5 31. Bc3 c5 {( -> ...Nh4)} 32. Bxd4 cxd4
$16 {[%mdl 4096] Endgame KQR-KQN} 33. Qd3 Nh4 {[%csl Gh4][%cal Rd5g2]} 34. Qg3+
Ng6 35. Re1 Kg7 36. h4 Qh5 37. Qd3 Qxh4 38. Re4 {[%mdl 64] [#] Double Attack}
Qf6 39. Rxd4 h5 40. Qe3 e5 41. Rd1 Qf5 42. Re1 Qg4 43. Qc3 (43. Rb1 {seems
wilder.} h4 44. Rb6 Qf4 45. Rb7 Kf6 46. Ra7) 43... Qg5 44. Re3 h4 45. Re4 Kh6
46. Qf3 Kg7 47. Rg4 Qh5 48. Kh2 Kf8 49. Qa8+ Kg7 50. Qc8 Kf6 51. Qd8+ Kg7 52.
Rg5 Qe2 53. Rf5 Qc4 54. Qf6+ Kg8 55. Rg5 {Qxe5 is the strong threat.} Qe4 56.
f3 Qe1 57. Rg4 Qe3 58. Qxh4 Kg7 59. Qg5 Qxg5 60. Rxg5 $18 {KR-KN} f6 61. Rg4 f5
$2 (61... Kf7 62. Kg3 f5) 62. Ra4 Kf6 63. g3 Nf8 64. Kg2 Ne6 65. Ra6 Kf7 66.
Kf2 f4 67. g4 Ng5 $2 (67... Nd4 68. g5 Kg7) 68. Ke2 {White is clearly winning.}
Kg7 69. Rb6 Kf7 70. Rh6 {Weighted Error Value: White=0.06/Black=0.13} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.44"]
[White "Movsesian, Sergei"]
[Black "Van Foreest, Lucas"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2627"]
[BlackElo "2543"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,56,4,11,4,10,7,10,0,0,0,0,-49,0,0,0,0,0,-25,0,0,0,2,20,0,13,9,19,21,
26,38,87,103,133,142,741,727,1191,1197,1147,95,1139,1135,1110,1084,29989,29990,
29990,29991,29999]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. c4 Nc6 6. d3
{C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} Nf6 7. d4 Be7 8.
Nc3 {The position is equal.} O-O 9. h3 d5 10. c5 $5 {[%mdl 4] [#] A promising
side line.} b6 $146 (10... Bxc5 $5 11. dxc5 d4 $15) ({Predecessor:} 10... Re8
11. Be3 Bxc5 12. dxc5 d4 13. Nxd4 Nxd4 14. Bc4 Bf5 15. Rc1 Qd7 16. O-O Rad8 17.
Bxd4 Qxd4 18. Qxd4 Rxd4 {1/2-1/2 (48) Galego,L (2506)-Delgado Palomeque,M 
(2224) Evora 2008}) 11. Bb5 Nb8 12. cxb6 axb6 13. Ne5 Ba6 (13... Bb7 {with
more complications.} 14. O-O c6 15. Bd3 Nbd7 16. Nf3 Bd6) 14. Bxa6 Rxa6 15. O-O
c6 16. Qd3 {Nxc6! is the strong threat.} b5 17. Bf4 Qb6 18. Rfe1 b4 19. Ne2 {
And now Ng3 would win.} Ne4 {[#]} 20. Ng3 $1 {[%cal Rg3e4]} Nxg3 21. Qxg3 {
Black must now prevent Ng4.} ({Resist} 21. fxg3 $6 Bf6 $14) 21... Ra8 $2 {
[%mdl 8192]} (21... Ra7 $16 22. Ng4 Kh8) 22. Ng4 $18 Qd8 {[#]} 23. Rxe7 $1 {
[%mdl 512]} Qxe7 24. Nh6+ $40 {[%mdl 128] White is out for blood.} Kh8 {
[#] Threatens to win with ...Qf6.} 25. Nf5 $1 {[%csl Gf5,LRe7,LRg7][%cal Rg3g7]
[%mdl 64] Double Attack} ({Less strong is} 25. Bd6 Qe8 $16) 25... Qf6 {[#]} 26.
Be5 $1 Qg6 (26... Qxe5 27. Qxe5) 27. Bxg7+ {[%mdl 64] Double Attack. White
mates.} Kg8 28. Bf6 {[%cal Rf5h6]} Qg5 29. Nh6# {Weighted Error Value: White=0.
05/Black=0.38} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.45"]
[White "Kravtsiv, Martyn"]
[Black "Neiksans, Arturs"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2625"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "159"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,159,-20,-12,-14,-21,-17,-19,-21,-8,-35,-27,-30,18,8,17,-21,-30,-24,
-20,-40,-33,-60,-31,-35,-12,-14,0,0,0,0,0,0,52,0,98,98,95,111,85,89,87,76,75,
75,78,75,126,126,122,120,120,120,122,122,168,158,168,163,177,114,252,147,135,
135,140,136,132,133,125,130,125,0,114,117,144,105,205,192,312,318,387,387,485,
390,465,465,339,228,559,486,481,470,570,570,529,504,493,341,308,297,29977,
29978,29978,29979,29979,29978,29973,0,29967,0,1537,1522,944,466,411,410,29962,
29965,29959,12398,29970,29972,29976,29977,29979,29979,29982,29979,29981,29980,
29979,29980,29982,29975,29980,29980,29982,29982,29987,29988,29988,29989,29990,
29990,29991,29991,29992,29993]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 O-O 5. Bg2
d5 6. Nf3 dxc4 7. O-O Nc6 8. Qa4 {E20: Nimzo-Indian: 4 g3 and 4 f3.} Nd5 9. Qc2
Be7 10. Rd1 {The position is equal.} Bd7 11. e4 {[#]} Ncb4 12. Qd2 Nxc3 13.
Qxc3 {[#]} Ba4 $146 ({Predecessor:} 13... b5 14. Ne5 Be8 15. a3 Nc6 16. Nxc6
Bxc6 17. b3 f5 18. bxc4 Bxe4 19. Bxe4 fxe4 20. cxb5 {1-0 (48) Ioannidis,E 
(2413)-Barski,R (2471) Katowice 2019}) 14. b3 cxb3 15. axb3 Be8 16. Bf4 c6 17.
Bh3 Kh8 18. Bc1 f5 19. Bb2 {Threatens to win with d5.} fxe4 20. d5 $1 {[%csl
Gb2][%cal Rc3g7]} Rf6 21. dxc6 Nd5 22. Qe5 bxc6 (22... exf3 $2 23. cxb7 Rb8 24.
Bxe6 $18) (22... Bxc6 $11 23. Bxe6 (23. Qxe4 Nf4 $15) 23... Qf8 24. Bxd5 Rxf3
25. Bxc6 bxc6 26. Qxe4 Rxf2) 23. Ng5 ({Better is} 23. Qxe4 $14 Qb6 24. Bxf6
Bxf6 25. Rac1 (25. Qxe6 Bh5 $14) (25. Bxe6 Nc3 $11)) 23... Bg6 (23... e3 $1 $11
24. fxe3 Bd6) 24. Nxe4 $16 Bxe4 25. Qxe4 Qf8 26. Bxf6 Bxf6 27. Qxe6 {aiming
for Rac1.} Bxa1 28. Rxa1 Qc5 29. Qf7 a5 (29... Qe7 $142 30. Qxe7 Nxe7) 30. Re1
{Re8+ would kill now.} Qf8 31. Qd7 Nb4 32. Bf1 h6 33. Bc4 Qd8 34. Qf7 Qf8 35.
Qg6 Rc8 36. Be6 (36. Re6 $18) 36... Re8 {[#]} (36... Qe8 $16 37. Qf5 Qe7) 37.
Re5 (37. Re4 $1 $18 {Threatening mate with Bf5.} Rb8 38. Rf4) 37... Nd5 {[#]}
38. Bf5 $1 $40 {[%csl Gf5][%cal Rg6h7][%mdl 640] Black is in trouble.} Nf6 39.
Rxa5 Qe7 40. Kg2 Qb7 41. Kh3 Re2 42. Ra4 (42. f3 $16) 42... Kg8 (42... Rxf2 $11
43. Rd4 Qb6) 43. Rd4 {White leaves nothing to chance now.} Qe7 44. Rf4 Rb2 (
44... Qf7 $16) 45. Bd3 {Intending Rxf6! and mate.} Qe6+ (45... Qd7+ {is a
better defense.} 46. Kg2 Qd5+ 47. Kg1 Rd2) 46. Kh4 $18 {Black must now prevent
Bc4!} Qe7 {Threatening ...Nd5+.} 47. Bc4+ Kh8 {Hoping for ...Nd5+.} 48. Kh3 {
And now Rxf6! would win.} Qf8 49. Bd3 {White wants to mate with Rxf6!} Qc8+ 50.
Bf5 Qd8 (50... Qg8 {is more resistant.} 51. Bc2 Qh7) 51. Bc2 Qd7+ 52. Kg2 Qd5+
53. Be4 Qd7 54. Rxf6 gxf6 55. Qxh6+ {[%mdl 4096] Endgame KQR-KQB} Kg8 56. Qxf6
{[%mdl 64] Double Attack} Rxb3 (56... Rd2 $18 57. Bxc6 Qd4 58. Qg6+ Kf8 59.
Qf5+ Kg7) 57. Bxc6 Qd3 58. Qe6+ Kg7 59. Qe5+ Kf8 60. Qf6+ Kg8 61. Qe5 $2 (61.
Qg5+ {mates} Kh7 62. Qe5 Kh6 63. Be4 Qd8 64. Qe6+ {[%mdl 64] Double Attack} Kg7
65. Qxb3 Kf6 66. Qc3+ Ke6 67. Qc4+ Ke7 68. Qc5+ Qd6 69. Qxd6+ Kxd6 70. Kf3)
61... Rb6 $2 {[%mdl 8192]} (61... Kf8 $11 62. Qc5+ Kf7 63. Bd5+ {[%mdl 64]
Double Attack} Ke8 64. Qc8+ Ke7 65. Qe6+ Kd8 66. Bxb3 Kc7) 62. Bd5+ Kf8 63. h4
(63. Qf4+ $142 Ke8 64. Qa4+ Kd8 65. Qa8+ Ke7 66. Qa7+ {[%mdl 64] Double Attack}
Ke8 67. Bf7+ Kf8 68. Qxb6 Kxf7 69. f3) 63... Qg6 64. h5 ({Weaker is} 64. Qc7
Rd6 $18) 64... Qf6 (64... Qd6 $18 65. Qh8+ Ke7) 65. Qxf6+ Rxf6 {KR-KB} 66. g4
Ra6 67. f4 {White mates.} Kg7 68. g5 Ra5 69. Be4 Ra3 70. Kf2 Rh3 71. Bf3 Rh2+
72. Kg3 Rb2 73. Kg4 Rb6 74. h6+ Kh8 75. Be4 Kg8 76. g6 Rd6 77. f5 Rd1 78. Kf4
Rd2 79. Ke5 Re2 80. f6 {Weighted Error Value: White=0.24/Black=0.39} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.46"]
[White "Sindarov, Javokhir"]
[Black "Jumabayev, Rinat"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2587"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,135,27,50,41,39,42,35,48,34,45,37,18,22,18,19,8,44,30,36,18,14,1,3,0,
0,-12,-3,0,31,35,82,75,58,74,75,66,59,67,65,68,108,37,75,68,77,75,71,70,78,80,
80,79,79,77,90,90,90,81,86,88,89,81,116,60,85,72,71,63,81,80,75,83,85,97,79,64,
156,154,161,135,244,244,244,237,352,341,692,685,650,600,909,905,902,877,877,
877,877,877,814,638,1142,1143,1092,1078,1051,1040,1017,1017,984,961,961,943,
903,844]} 1. e4 c5 2. Nc3 e6 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Ndb5 Bb4 7.
a3 Bxc3+ 8. Nxc3 d5 9. exd5 exd5 10. Bd3 O-O 11. O-O Bg4 12. f3 Bh5 {is
recently more successful than 12...Be6.} 13. Bg5 {B45: Sicilian Four Knights.}
Qb6+ 14. Kh1 Ne4 15. Nxe4 {White is slightly better.} dxe4 16. Bxe4 Qxb2 17.
Qd6 $5 {[%mdl 4] An interesting side line.} Bg6 18. Rab1 Qc3 {[#]} 19. Bd5 $146
({Predecessor:} 19. Bxg6 hxg6 20. Rxb7 Rac8 21. Qd3 Qa5 22. Bd2 Qa4 23. Be3
Rfe8 24. Qd5 Nd8 25. Rxa7 Qxc2 {1-0 (46) Ptacnikova,L (2183)-Bakalarz,G (2068)
Turin 2006}) 19... Rac8 20. Rxb7 Nd4 21. Qd7 {Black must now prevent Be7.} (21.
Rxa7 $2 Nb5 $19) 21... Qxc2 22. Rg1 (22. Rxa7 $2 h6 $19) 22... Qf2 {aiming for
...Ne2.} 23. Qe7 {And now Be3 would win.} Nf5 24. Qb4 h6 25. Bf4 a5 26. Qxa5
Rc5 27. Qb6 Qd4 28. Be4 Rfc8 29. Rb8 Rxb8 30. Qxb8+ Kh7 31. Qb6 Qc4 32. Qb1 (
32. a4 $16) 32... Qa4 33. Qb4 Rc4 34. Qxa4 Rxa4 35. Bc1 Nd6 36. Bxg6+ Kxg6 $16
{[%mdl 4096] Endgame KRB-KRN} 37. Rd1 Nb5 38. Bb2 h5 39. Kg1 f6 40. Kf2 Ra6 41.
Rd3 Nd6 42. Ke2 Kf5 43. Kd1 (43. Rd4 $16) 43... g5 44. Kc2 Nc4 45. Rc3 Ne5 46.
Bc1 g4 47. f4 Ng6 48. g3 h4 49. Rc4 h3 (49... hxg3 $14 50. hxg3 Ne7) 50. a4 $1
Nh4 {Strongly threatening ...Nf3.} 51. Rc5+ $1 (51. gxh4 g3 $11) 51... Kg6 (
51... Ke4 $16 {was worth a try.}) 52. gxh4 $18 {f5+ is the strong threat.
KRB-KR} g3 53. h5+ $1 (53. hxg3 $2 h2 $19) 53... Kh6 (53... Kh7 $142 54. Rc7+ (
54. hxg3 $2 h2 $19) 54... Kh8) 54. Rc3 $1 {[%cal Rc3g3]} (54. hxg3 h2 $11)
54... Rc6 $2 {[#]} (54... g2 55. f5+ Kg7 56. Rg3+ Kh7) 55. f5+ $1 {White is
clearly winning.} (55. Rxc6 $2 {perishes.} gxh2 56. f5+ Kxh5 $19) 55... Kxh5 {
[#]} 56. Bf4 $1 (56. Rxc6 $2 {loses.} gxh2 57. Rxf6 h1=Q $19) 56... g2 57. Be3
({Stronger than} 57. Rxc6 g1=Q $17) 57... Ra6 58. Ra3 Kg4 59. Kd2 Kxf5 60. a5
Kg4 61. Ke2 f5 62. Ra4+ Kh5 63. Kf3 f4 64. Bg1 Kg5 65. Ra1 Kf5 66. Bb6 Kg5 67.
Kf2 Kg4 68. Rd1 {Weighted Error Value: White=0.05/Black=0.28} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.47"]
[White "Goryachkina, Aleksandra"]
[Black "Adhiban, B.."]
[Result "1/2-1/2"]
[ECO "A41"]
[WhiteElo "2602"]
[BlackElo "2672"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,52,62,73,62,75,0,0,0,-9,0,33,23,41,34,40,33,45,20,34,26,39,33,24,-74,
-67,-87,-59,-59,-13,-8,0,-111,-115,-114,-104,-114,-18,-106,-97,-172,0,-31,0,
-164,0]} 1. d4 d6 2. e4 g6 3. c4 e5 4. Nc3 exd4 5. Qxd4 Nf6 6. Bg5 {A41: 1 d4
d6: Tartakower System and Modern Defence.} Nbd7 7. Nf3 (7. f4 $16 h6 8. Bh4)
7... h6 {[#]} 8. Be3 $146 {The position is equal.} ({Predecessor:} 8. Bxf6 Nxf6
9. e5 Qe7 10. O-O-O dxe5 11. Nxe5 Bg7 12. Qe3 O-O 13. Bd3 Re8 14. Rhe1 {
1-0 (39) Rasovsky,J-Brach,J Piestany 1922}) 8... Bg7 9. Qd2 Ng4 10. Bd4 Nde5
11. O-O-O Be6 12. h3 c5 13. hxg4 {Hoping for Bxe5.} cxd4 14. Nxd4 Bxc4 15. f4
Bxf1 16. fxe5 (16. Rhxf1 $11 {remains equal.} Nc4 17. Qe2) 16... dxe5 $17 17.
Rdxf1 exd4 (17... Qxd4 18. Qe2 $11) 18. Nd5 O-O 19. Rxh6 d3 {...Rc8+ is the
strong threat.} (19... Bxh6 $2 20. Qxh6 Rc8+ 21. Kb1 $18) 20. Rfh1 (20. Kb1 $1
$11 Rc8 21. Rfh1) 20... Qc8+ 21. Nc3 {And now Rh8+! would win.} Rd8 ({Of
course not} 21... Qxg4 $6 22. Rh8+ $1 Bxh8 23. Qh6 $11) 22. Rh7 Qxg4 (22... Qc5
$17 23. Rxg7+ Kxg7 24. Qh6+ Kf6 25. Rf1+ Ke6) 23. Nd5 (23. Kb1 $11) 23... Qc8+
$1 (23... Qxe4 24. Rxg7+ $1 {[%mdl 512]} Kxg7 25. Qh6+ Kg8 26. Qh8#) 24. Nc3 (
24. Kb1 $17 {was necessary.} Qc2+ 25. Qxc2 dxc2+ 26. Kc1) 24... Qg4 (24... Qc4
$19 {aiming for ...Be5.} 25. Rxg7+ Kxg7 26. Qh6+ Kf6) 25. Nd5 $15 {Threatening
mate with Rxg7+!} Qc8+ ({Not} 25... Qxe4 {[#]} 26. Rxg7+ $1 {[%mdl 512]} Kxg7
27. Qh6+ Kg8 28. Qh8#) (25... Rac8+ $15 26. Kb1 Rxd5 $1 {[%mdl 512]} 27. exd5
Qe4) 26. Nc3 $1 $19 ({But not} 26. Kb1 Qc2+ 27. Qxc2 dxc2+ 28. Kc1 Rd7 $17)
26... Qg4 $2 {Weighted Error Value: White=0.29/Black=0.25} ({Black should play
} 26... Qc4 $19 27. Rxg7+ Kxg7 28. Qh6+ Kf6) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.48"]
[White "Cheparinov, Ivan"]
[Black "Durarbayli, Vasif"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2659"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,93,18,12,8,8,7,17,14,10,0,8,8,8,8,7,7,8,8,8,8,9,10,9,10,8,0,0,0,0,-7,
0,0,0,0,0,0,0,-16,0,1,7,0,0,0,0,0,43,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
7. Bb3 O-O 8. a4 Bb7 9. d3 d6 10. Bd2 Qd7 11. h3 {C88: Closed Ruy Lopez:
Anti-Marshall Systems.} Nd8 12. axb5 axb5 13. Rxa8 Bxa8 14. Nc3 Ne6 {[#]} 15.
Bxe6 $146 ({Predecessor:} 15. Nd5 Bd8 16. Qa1 Bb7 17. Qa7 c6 18. Ne3 Be7 19.
Nf5 Ra8 20. Qe3 Qd8 21. Ng5 {1/2-1/2 (51) Ivic,V (2571)-Sargissian,G (2682)
Reykjavik 2021}) 15... fxe6 16. b4 Bb7 17. Qb1 Ra8 18. Qb2 h6 19. Ra1 Rxa1+ 20.
Qxa1 Kf7 21. Qa5 Bc6 22. g4 Nh7 23. Kg2 Nf8 24. h4 Nh7 25. Kh3 Kg8 26. Kg3 Nf6
27. g5 hxg5 28. hxg5 Nh5+ 29. Kg4 g6 30. Nh4 Kf7 31. Qa1 Qc8 32. Ne2 Be8 {[#]}
33. Nxg6 $1 Kxg6 {The position is equal.} 34. Qh1 $1 {[%cal Rh1h5]} Kg7 35. Ng3
Nf4 $1 {aiming for ...Bg6.} ({Worse is} 35... Nxg3 36. Qh6+ Kg8 37. g6 $18) 36.
Qh6+ ({Don't play} 36. Bxf4 exf4 37. Qh6+ Kg8 $17) 36... Kg8 37. g6 $1 Bxg6 {
[#] Hoping for ...Bf7.} ({Avoid the trap} 37... Nxg6 $2 38. Nh5 $18) 38. Bxf4
Kf7 39. Bg5 {Strongly threatening Bxe7.} Qg8 40. Bxe7 Kxe7 41. Qg5+ Kd7 42. f4
exf4 43. Qxb5+ Kc8 {White must now prevent ...Be8+.} 44. Kxf4 e5+ 45. Kf3 Qf7+
46. Kg2 Qf4 47. Qc4 {A rather calm draw.  Weighted Error Value: White=0.02/
Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.49"]
[White "Rakhmanov, Aleksandr"]
[Black "Vokhidov, Shamsiddin"]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2657"]
[BlackElo "2521"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,60,0,1,-7,0,0,0,0,0,0,5,0,0,-11,0,0,7,0,9,0,0,0,0,0,0,0,0,0,0,0,0,0,
9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5.
Nf3 d5 6. Bd2 b6 7. cxd5 exd5 {The position is equal.} 8. Rc1 {E51:
Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5.} Bb7 9. Bd3 Re8 10. O-O Bf8 11. Ne5
c5 12. f4 Nc6 13. Ne2 Ne4 {[#]} 14. Ng3 $146 ({Predecessor:} 14. Bxe4 dxe4 15.
Bc3 Qc7 16. Ng3 Rad8 17. Qg4 Bc8 18. f5 f6 19. Nxc6 Qxc6 20. Nh5 {1-0 (32)
Aditya,M (2438)-Vatsal,S (2371) Tornelo INT 2021}) 14... Nxg3 15. hxg3 {
[#] And now Bxh7+! would win.} g6 16. Qg4 {With the idea Nxf7.} Qe7 17. Nxc6
Bxc6 18. f5 Qd7 19. Qf4 Bd6 20. Qh4 (20. Qh6 {keeps more tension.} Bf8 21. Qf4)
20... Bb5 21. Bxb5 Qxb5 22. fxg6 hxg6 23. dxc5 $40 {[%mdl 128] White attacks.}
Bxc5 24. Rxc5 Qxc5 25. Bc3 {[%csl Gc3][%cal Rh4h8]} Qxe3+ 26. Rf2 $1 {[%csl
Gc3][%cal Rh4h8]} Re5 $1 {[%cal Re5h5] White must now prevent ...Rh5.} 27. Qf6
$1 {[%cal Rf6f7]} Qc1+ 28. Rf1 Qe3+ {[%mdl 64] [#] Double Attack} 29. Rf2 Qc1+
30. Rf1 Qe3+ {[%mdl 64] Double Attack. An uneventful encounter.  Weighted
Error Value: White=0.02/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.50"]
[White "Georgiev, Kiril"]
[Black "Paravyan, David"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2577"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "164"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,164,10,11,27,12,13,21,10,0,38,16,64,35,38,38,42,41,38,37,56,54,54,54,
60,58,32,0,56,52,51,55,58,0,54,41,54,20,29,27,41,18,9,8,27,40,43,3,18,0,0,0,0,
0,35,11,34,33,58,0,0,0,0,0,61,61,61,61,99,0,0,-29,-30,-70,-70,-72,-88,-101,
-116,-113,-66,-66,-66,-66,-66,-66,-66,-73,-73,-73,-73,-73,-42,-51,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7.
O-O Bg7 8. Bg5 h6 9. Bh4 Bd7 10. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3,Be3d5][%mdl 32]}
O-O 11. Re1 Qe8 {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} 12. Nf1 Nh5
13. Ne3 Nf4 14. Bg3 Ne6 15. Nd5 Kh8 {[#]} 16. Kh1 $146 ({Predecessor:} 16. Bc2
Rc8 17. Qd2 f5 18. exf5 gxf5 19. d4 e4 20. Nh4 Qf7 21. f3 Nexd4 22. cxd4 Qxd5 {
1/2-1/2 (52) Bindrich,F (2532)-Gonda,L (2482) Budapest 2010}) 16... Rc8 17. Bc2
Qd8 18. Qd2 Ne7 19. d4 exd4 20. Nxe7 Qxe7 21. cxd4 Ng5 22. Nh4 Ne6 23. Nf3 Ng5
24. Nxg5 Qxg5 25. Bf4 Qh4 26. Bg3 Qg5 27. f4 Qb5 28. e5 dxe5 29. dxe5 Be6 30.
Be4 Rfd8 31. Qf2 Qb6 32. Qf3 Rd2 33. b3 Rcd8 34. Bxb7 R8d3 35. Qc6 Qd4 36. Qe4
$1 (36. Qxc7 $2 Qxa1 $3 {[%mdl 512]} 37. Rxa1 (37. Qb8+ $2 Kh7 $19) 37... Rd1+
38. Be1 Rxa1 $19) (36. Bxa6 $2 Bd5 $19) 36... Qd8 37. Re3 (37. Bxa6 $2 {[#]}
Rxg3 $1 {[%mdl 512]} 38. hxg3 Bd5 $19) 37... Rd4 38. Qf3 h5 39. Be1 (39. Bxa6
$2 Bd5 $19) (39. h3 $14) 39... Rd1 $1 $11 {[%cal Rd1a1]} 40. Rxd1 Rxd1 41. h3
Bf8 (41... Qd4 $11) 42. Kh2 $1 $14 ({But not} 42. Bxa6 $2 Qd2 $19) 42... Bc5
43. Re2 Kg7 ({Don't play} 43... Qd4 $6 44. Bf2 $16) 44. b4 (44. Bxa6 $16 Bd4
45. Bf2) 44... Bb6 $11 45. f5 Bxf5 46. Bxa6 Qd4 47. Bf2 Qxb4 48. Bxb6 Qxb6 49.
Rf2 Re1 50. Bc8 Rxe5 ({And not} 50... Bxc8 51. Qxf7+ Kh8 52. Qf8+ Kh7 53. Rf7#)
51. Bxf5 Rxf5 $15 {[%mdl 4096] Endgame KQR-KQR} 52. Qc3+ Qf6 $1 {[%cal Rf6c3]}
53. Qxf6+ Kxf6 {KR-KR} 54. Rc2 c5 55. a4 {[%cal Ba2a4,Ba4a5,Ba5a6,Ba6a7][%mdl
32]} Ke6 56. a5 $1 Kd5 ({Better is} 56... Kd6 $15 57. a6 Kc7) 57. a6 $11 {
The position is equal.} Re5 $1 {[%cal Re5e7]} 58. a7 Re8 {Strongly threatening
...Ra8.} 59. Re2 Rc8 (59... Rf8 {is interesting.} 60. Re7 f6 61. Rb7 Ra8 62.
Kg3 Kc6) 60. Rb2 {aiming for Rb8.} Ra8 61. Rb7 f5 62. Kg3 g5 63. Kf3 Kc6 64.
Rf7 g4+ 65. Ke3 h4 66. Kd3 Kb5 67. Kc3 g3 (67... gxh3 {seems wilder.} 68. gxh3
Kb6 69. Kc4 Re8 70. Kd5 Ra8) 68. Kb3 f4 69. Rxf4 Rxa7 {White must now prevent .
..c4+!} 70. Rxh4 Re7 71. Rc4 Re3+ 72. Rc3 c4+ 73. Kb2 Re2+ 74. Rc2 Rf2 75. Kc3
Kc6 76. Rd2 Kc5 77. Rd4 Rxg2 78. Rxc4+ Kd5 {( -> ...Rc2+!)} 79. Rg4 Rg1 80. Kd2
g2 81. Ke2 Rh1 82. Rxg2 Rxh3 {Weighted Error Value: White=0.10/Black=0.11}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.51"]
[White "Suleymanli, Aydin"]
[Black "Adly, Ahmed"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2541"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,77,8,15,49,6,10,10,32,26,41,-6,11,-45,-55,-25,0,0,0,-39,3,7,2,0,76,
88,85,83,76,89,85,73,100,100,77,88,109,108,109,115,135,138,152,137,195,191,219,
215,212,155,224,211,264,247,277,264,337,320,1660,1465,29972,29973,5845,12847,
29977,29978,29977,29976]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 O-O 5. a3 Be7
6. b4 d5 7. e3 Ne4 {[#] E11: Bogo-Indian.} 8. Nxe4 $146 ({Predecessor:} 8. Bd3
f5 9. Bb2 Nd7 10. O-O Ndf6 11. Ne5 c6 12. Qc2 Bd7 13. Nb3 Be8 14. f3 Nd6 15. a4
dxc4 16. Nxc4 {1-0 (44) Weetik,V (2608)-Khanin,S (2692) Chess.com INT 2019})
8... dxe4 9. Nd2 f5 {The position is equal.} 10. Bb2 Nd7 11. f3 exf3 12. Qxf3 (
12. Nxf3 $11 a5 13. c5) 12... a5 $15 13. b5 e5 14. dxe5 Nc5 15. Be2 (15. Rd1 {
feels hotter.} Qe8 16. Be2 Be6 17. Nb1 Ne4 18. O-O) 15... Be6 16. Bd4 f4 17.
O-O Rf5 (17... b6 $11) 18. Rad1 $16 {aiming for Ne4.} fxe3 19. Qxe3 Bg5 20. Qc3
Bxd2 21. Qxd2 ({Stronger than} 21. Rxd2 Rxf1+ 22. Bxf1 Ne4 $17) 21... Nb3 22.
Qe3 Rxf1+ 23. Bxf1 Nxd4 24. Rxd4 Qe7 25. Be2 b6 26. Bf3 Rf8 27. Bd5 g6 (27...
Re8 $16 28. h3 h6) 28. h3 Kg7 29. Bxe6 Qxe6 $18 {[%mdl 4096] Endgame KQR-KQR}
30. Rd5 Rf7 (30... a4 $16 31. Qd2 Rf5) 31. Qd4 Re7 32. c5 Kf8 33. c6 Kg7 34.
Rd7 Kf8 {[#]} (34... a4 35. Rxe7+ (35. Qxa4 Rxd7 36. cxd7 Qxd7 $16) 35... Qxe7
36. e6+ (36. Qxa4 Qc5+ 37. Kh1 Qxe5 $14) 36... Kg8) 35. Rxc7 $1 {[%mdl 512]}
Qxe5 (35... Rxc7 36. Qd8+) 36. Qxe5 Rxe5 37. Rxh7 Rc5 38. c7 Ke8 39. h4 {
Weighted Error Value: White=0.12/Black=0.69} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.52"]
[White "Meshkovs, Nikita"]
[Black "Budisavljevic, Luka"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2550"]
[BlackElo "2508"]
[Annotator "TA"]
[PlyCount "175"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,174,26,2,12,22,0,0,-9,24,7,37,-8,26,23,27,14,37,40,47,67,115,86,128,
88,107,83,85,80,86,84,119,115,129,106,119,106,114,106,105,108,105,83,80,30,30,
31,62,31,36,12,6,-6,-4,-6,-1,0,-8,-31,-28,-31,-28,-30,0,0,0,0,6,6,10,0,18,18,
16,18,63,63,63,63,63,45,105,105,185,8,8,8,8,12,186,144,85,85,85,114,79,79,81,
91,92,92,191,191,191,206,247,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 e6 2.
g3 c5 3. Nf3 cxd4 4. Nxd4 Nf6 5. Bg2 d5 6. O-O e5 7. Nb3 Be6 8. Bg5 {D02: 1 d4
d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Nbd7 9. f4 exf4
10. gxf4 g6 11. Nc3 {[%cal Rc3d5]} Be7 {[#]} 12. Qd4 $146 {[%cal Rc3d5]} ({
Predecessor:} 12. Kh1 O-O 13. Nd4 Nb6 14. f5 Bd7 15. fxg6 hxg6 16. Qd3 Ng4 17.
Bf4 Bc5 18. Rad1 {0-1 (52) Sargissian,G (2672)-Halkias,S (2571) Riadh 2017})
12... Qb6 13. Rad1 $36 {[%mdl 2048] White has some pressure.} Rc8 14. Kh1 O-O
15. Qxb6 Nxb6 16. f5 gxf5 17. Nd4 Bd8 18. Nxf5 Ng4 19. Ne7+ Bxe7 20. Bxe7 Rfe8
21. Bg5 f6 22. Bc1 (22. Bxf6 $6 Ne3 $11) 22... Kg7 23. Rd3 Ne5 24. Rg3+ Ng6 25.
Be3 Rc4 {next ...d4 is good for Black.} 26. Rd1 Na4 27. Nxa4 (27. Bxd5 Nxc3 28.
bxc3 Rd8 $1 $17) 27... Rxa4 28. Bd4 (28. Bxd5 Rd8 $1 $17) 28... Bf5 $1 29. e3
Bxc2 30. Rf1 Ra6 31. h4 h5 $1 32. Bxd5 Be4+ 33. Bxe4 Rxe4 34. Rf5 Rxh4+ 35. Kg2
Kf7 {...Rxd4! is the strong threat.} 36. Rb5 b6 37. Bc3 Rg4 38. Rxh5 Rxg3+ 39.
Kxg3 $11 {[%mdl 4096] Endgame KRB-KRN} Ke6 40. a3 {[%cal Ba2a3,Ba3a4,Ba4a5,
Ba5a6][%mdl 32]} Ra4 41. Bb4 Ne7 (41... Ne5 {is interesting.} 42. Rh8 Kf5 43.
Rh4 Nd3 44. e4+ Ke6) 42. b3 Ra6 43. a4 Nd5 44. Bd2 b5 45. e4 ({Much weaker is} 
45. axb5 $6 Ra2 $11) 45... Nc7 46. a5 Rd6 (46... Rc6 $1 $14) 47. Bf4 $16 Rc6 (
47... Rd3+ $16 {is a better defense.} 48. Kg4 Rc3) 48. Rh7 $2 (48. Bxc7 $18
Rxc7 49. Rxb5) 48... Na6 $11 49. Rxa7 Nc5 50. Be3 Nxb3 (50... Nxe4+ $11 {
and Black is okay.} 51. Kf3 Nc5) 51. a6 $18 {Black must now prevent Ra8.} Nc5
52. Bxc5 Rxc5 $16 {KR-KR} 53. Ra8 Rc7 54. Kf4 $1 {Threatens to win with Rb8.} (
{Much worse is} 54. a7 Re7 $11) 54... b4 {[#]} 55. Rb8 $1 {[%cal Rb8b4]} Ra7
56. Rb6+ ({Reject} 56. Rxb4 $6 Rxa6 57. Rb7 Ra1 $11) 56... Kd7 57. Rxf6 Kc7 {
[#]} 58. Ke3 $1 {White wants to mate with Rf7+.} Ra8 59. Rf7+ $2 (59. e5 $18)
59... Kb6 {The position is equal.} 60. Rb7+ Kc6 61. Rxb4 Rxa6 62. Rd4 Ra8 $1
63. Kf4 Kc5 64. Rd5+ (64. Rd7 {with more complications.} Kc6 65. Rd5 Rf8+ 66.
Kg4 Rg8+ 67. Kf3) 64... Kc6 $1 65. Rd4 Kc5 66. Rd7 {Hoping for e5.} Kc6 67. Rd5
Rf8+ 68. Rf5 Rd8 69. Rf7 Kd6 70. Kf5 {aiming for e5+.} Re8 71. Rf6+ Kd7 $1 72.
e5 {Strongly threatening Rf7+.} Rh8 73. Rf7+ Ke8 74. Ke6 (74. Rb7 {keeps more
tension.} Rh5+ 75. Ke4 Rh6 76. Kd5 Rg6 77. Ra7) 74... Rh6+ 75. Rf6 Rh7 76. Rg6
{[%cal Rg6g8]} (76. Rf1 {looks sharper.} Re7+ 77. Kd6 Rd7+ 78. Kc6 Re7 79. Rf5)
76... Re7+ 77. Kf5 Rf7+ 78. Rf6 Ra7 79. Rh6 {White threatens Rh8+ and mate.}
Rf7+ 80. Ke6 Re7+ 81. Kd5 Rd7+ 82. Rd6 (82. Ke4 {seems wilder.} Rg7 83. Ra6 Rb7
84. Kf5 Rf7+ 85. Kg6) 82... Ke7 83. Rxd7+ Kxd7 84. e6+ Ke7 85. Ke5 Ke8 86. Kd6
{Threatening mate with e7.} Kd8 87. e7+ Ke8 88. Ke6 {Weighted Error Value:
White=0.17/Black=0.15} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.53"]
[White "Morovic Fernandez, Ivan"]
[Black "Miezis, Normunds"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2510"]
[BlackElo "2467"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,89,43,31,27,73,62,67,62,64,64,64,67,77,67,68,81,79,65,64,68,63,66,76,
75,70,78,90,54,95,72,73,61,112,94,120,116,122,109,122,105,140,117,115,110,138,
147,186,197,279,276,294,294,286,286,281,150,140,0,0,0,3,-10,-10,-10,-10,-10,
-10,-10,-10,-10,-10,-10,-10,-22,-22,-22,-22,-22]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4
4. Nxd4 a6 5. Bd3 Nc6 6. Nxc6 dxc6 7. Nd2 Qc7 {was the old line (7...e5).} 8.
Qg4 {[#] B42: Sicilian: Kan Variation: 5 Bd3.} b5 $146 ({Predecessor:} 8... Nf6
9. Qg3 Qxg3 10. hxg3 Nd7 11. a4 Nc5 12. Be2 e5 13. f3 Be6 14. a5 Nd7 15. Bc4
Nc5 {1/2-1/2 (65) Smeets,J (2593)-Miezis,N (2540) Liverpool 2008}) 9. a4 Bb7
10. Qg3 {White is slightly better.} Qxg3 11. hxg3 Nf6 12. Nb3 Nd7 13. Be3 Rc8
14. Be2 Be7 15. f3 O-O 16. g4 h6 17. O-O Rfd8 18. Rfd1 Kf8 19. Kf2 Ke8 20. Rd2
Rb8 21. c3 Rbc8 22. Rdd1 Rb8 ({Black should try} 22... Rc7 $14) 23. axb5 $16
cxb5 24. Na5 Ba8 {[#]} 25. c4 $1 bxc4 26. Nxc4 Bb7 27. Nd6+ Bxd6 28. Rxd6 Rdc8
29. Rad1 Bc6 30. Bxa6 {Black must now prevent b4.} Rxb2+ (30... Rc7 $142 31.
Rc1 Rxb2+ 32. Rd2 Rxd2+ 33. Bxd2 Ne5) 31. R1d2 $18 Rxd2+ 32. Bxd2 Ke7 {[#]} 33.
Bb4 ({Less strong is} 33. Bxc8 Kxd6 34. Bb4+ Nc5 $14) 33... Rb8 34. Ba3 ({
Inferior is} 34. Rxc6+ Rxb4 35. Rc7 Kd6 $11) 34... Ba8 35. Bb5 Rxb5 $11 {
The position is equal.} 36. Rb6+ (36. Ra6+ {is interesting.} Kf6 37. Rxa8 Nc5
38. Rd8 Ra5 39. Bb4) 36... Rc5 $1 37. Rb5 {[%mdl 64] Pin} (37. Ra6 {with more
complications.} Bb7 38. Ra7 Kd8 39. Rxb7 Ra5 40. Rb3) 37... Kd6 {...Kc6 is the
strong threat.} 38. Bxc5+ Nxc5 39. Rb8 $1 {[%cal Rb8a8]} Bc6 40. Rg8 $1 g5 41.
Rh8 Nd3+ 42. Ke3 Nf4 43. g3 Ng6 44. Rxh6 Ne5 45. Rh5 {Black escapes into a
draw.  Weighted Error Value: White=0.07/Black=0.11} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.01"]
[Round "6.54"]
[White "Gretarsson, Hjorvar Steinn"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2577"]
[BlackElo "2484"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,59,17,10,22,17,3,2,15,18,12,16,14,36,47,34,36,50,49,43,35,139,114,
137,131,199,197,229,232,256,272,250,265,250,225,419,372,529,497,529,520,1025,
988,1264,1262,1233,1224,1153,1127]} 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. cxd5 exd5
5. Bg5 c6 6. e3 Be7 {6...h6 might become the main line.} 7. Bd3 O-O 8. h3 {
D35: Queen's Gambit Declined: Exchange Variation.} Re8 9. Nf3 Ne4 10. Bf4 {
[#] The position is equal.} ({Not} 10. Nxe4 $2 dxe4 11. Bxe4 Bxg5 $19) 10...
Bd6 $146 ({Predecessor:} 10... Nxc3 11. bxc3 Nd7 12. O-O Nf8 13. a4 Be6 14. a5
Qd7 15. Qc2 Bd6 16. Ne5 Bxe5 17. Bxe5 {0-1 (54) Sigamoney,C-Aung,T (2518) ICC
INT 2009}) 11. Bxd6 Nxd6 12. Qc2 g6 13. h4 Bf5 14. Bxf5 Nxf5 15. h5 Nd7 16.
O-O-O Qf6 ({Black should try} 16... Nd6 $14) 17. e4 $16 Ne7 18. Qd2 b5 (18...
Rac8 $16 {was necessary.}) 19. e5 $18 Qg7 20. hxg6 fxg6 21. Ng5 Nf8 22. Rh2 h6
23. Nf3 Kh7 $2 {[#]} (23... h5 24. Ng5 Rac8) 24. Rdh1 Ng8 (24... h5 {was
called for.} 25. g4 Ne6 26. Ng5+ Nxg5) 25. Ng5+ {White is clearly winning.} Kh8
26. g4 Ne6 {[#]} (26... Re7 $142 27. f4 b4) 27. Nf7+ $1 {[%mdl 512]} Kh7 (27...
Qxf7 28. Rxh6+) 28. Nxh6 Nxh6 29. Rxh6+ Kg8 30. f4 {Weighted Error Value:
White=0.01/Black=0.41} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.1"]
[White "Firouzja, Alireza"]
[Black "Najer, Evgeniy"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "2770"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,117,15,17,9,20,16,21,22,17,21,29,20,33,11,31,5,12,12,17,13,47,48,61,
63,47,57,68,54,49,53,53,59,53,55,117,47,89,89,98,100,88,93,137,128,127,122,142,
132,126,126,156,159,151,158,158,158,157,158,158,151,151,151,151,151,151,151,
165,96,104,96,97,80,100,101,118,111,128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29969,
29970,29969,29969,29969,29967,29955,29951,29976,29977,29976,29978,29984,29985,
29985,29986,29986,29987]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d5 5. Nbd2
Nxd2 6. Bxd2 {C43: Petroff Defence: 3 d4.} Be7 7. c3 $5 {[%mdl 4] Exploring
less charted territory.} c5 8. Bd3 {The position is equal.} Nc6 9. O-O Bg4 10.
Re1 Qd7 11. h3 Bh5 12. Bf4 Qe6 13. Be2 O-O 14. Qd2 Bg6 15. Rad1 Be4 16. Ng5 $1
{[%cal Rg5e6]} Bxg5 17. Bxg5 {[#]} d4 $146 ({Predecessor:} 17... h6 18. Be3 d4
19. cxd4 Rfd8 20. Qc3 Qg6 21. g3 cxd4 22. Bxd4 Qe6 23. Kh2 Rac8 {1-0 (38) So,W
(2760)-Yu,Y (2738) Jerusalem 2019}) 18. Bf1 Qg6 19. Qf4 Bc2 20. Rd2 Rae8 21.
Bh4 Kh8 (21... Bb1 $14) 22. f3 ({But not} 22. cxd4 $6 Nxd4 23. f3 Qb6 $14) (22.
Bb5 $16) 22... a6 23. Bf2 Rd8 24. Rc1 Bb1 25. cxd4 Nxd4 26. Bxd4 cxd4 27. a3
Ba2 28. Rxd4 Qb6 29. Rcd1 Rfe8 30. Kh2 Rxd4 31. Qxd4 Qxd4 32. Rxd4 $16 {
[%mdl 4096] Endgame KRB-KRB} g5 33. Rd7 b5 34. Rd6 Rxe5 {[#] ...Re1 is the
strong threat.} 35. Rxa6 Bc4 36. Bxc4 bxc4 {KR-KR} 37. a4 Rc5 38. Rb6 (38. h4
$18) 38... c3 39. bxc3 Rxc3 40. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Kg7 41. a6 Ra3
42. Kg3 Ra2 43. f4 ({Better is} 43. Rd6 $16) 43... gxf4+ $1 $11 44. Kxf4 Rxg2
45. Ke5 {Black must now prevent Kd6.} Ra2 46. Kd6 f5 $1 47. Kc7 f4 48. Kb8 {
aiming for a7.} f3 49. a7 f2 50. Rb1 f1=Q $4 {[%mdl 8192] [#]} (50... Kh6 $11)
51. Rxf1 {White mates.} Rb2+ 52. Ka8 Rb3 53. Rc1 Kg6 54. Rc7 h5 55. Rb7 Rxh3
56. Rb6+ Kg5 57. Kb7 Ra3 58. Ra6 Rb3+ 59. Kc7 {Weighted Error Value: White=0.
06/Black=0.19} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.2"]
[White "Sasikiran, Krishnan"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2640"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,60,25,34,16,10,14,13,0,0,0,0,0,0,0,11,0,0,-12,0,0,-8,0,0,0,0,0,8,0,0,
0,25,0,0,0,9,0,0,0,25]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6.
Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O Nbd7 11. g4 b5 12. g5 Nh5 $1 {
[%mdl 4] is recently more successful than 12...b4.} 13. Kb1 {B90: Sicilian
Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Nb6 14. Na5 {
[#] Black must now prevent Nc6.} Rc8 15. Nd5 Nxd5 16. exd5 Bxd5 17. Qxd5 {
Threatens to win with Nc6.} Qxa5 18. Bd3 g6 {[#]} 19. Be4 $146 ({Predecessor:} 
19. c4 Nf4 20. Bxf4 exf4 21. h4 Rc5 22. Qe4 Re5 23. Qxf4 Rc8 24. h5 Bxg5 25.
Qg4 {1-0 (31) Grigoriants,S (2542)-Bok,B (2624) Chess.com INT 2020}) 19... Qc7
20. Qd3 Rfe8 21. Bd5 Bf8 22. h4 a5 23. c3 Qd7 24. a3 Rc7 25. Rhg1 Rb8 26. Bb3
Kh8 27. Rgf1 Ng3 {The position is equal.} 28. Rg1 Nh5 29. Rgf1 Ng3 30. Rg1 Nh5
{An uneventful encounter.  Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.3"]
[White "Esipenko, Andrey"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2720"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,109,41,47,0,0,0,0,0,0,0,0,0,6,-27,50,42,42,61,51,61,33,25,24,38,43,
47,96,81,95,95,95,103,90,90,91,79,103,93,111,77,111,42,56,61,114,110,133,124,
158,101,114,102,91,87,103,69,62,62,62,0,0,0,0,0,0,0,0,0,99,99,99,99,99,99,99,
99,99,99,141,176,151,151,151,8,59,0,151,150,202,211,211,206,237,0]} 1. e4 e5 2.
Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. a4 Rb8 8. c3 d6 9. d4 Bb6
10. a5 {C78: Ruy Lopez: Archangelsk and Möller Defences.} Ba7 ({Wrong is} 10...
Bxa5 $2 11. dxe5 (11. d5 Ne7 $18) 11... dxe5 12. Qxd8+ Kxd8 13. Bd5 $18 (13.
Bxf7 Bb6 $16)) 11. Be3 Bg4 12. Nbd2 {The position is equal.} exd4 13. cxd4 {
White wants to play Qc2.} O-O $1 14. h3 Bh5 {[#]} 15. Re1 $5 $146 {[%mdl 8] An
interesting novelty.} ({Predecessor:} 15. Qc1 Nb4 16. g4 Bg6 17. Bg5 h6 18. Bh4
c5 19. Qc3 cxd4 20. Nxd4 Nxe4 21. Nxe4 Qxh4 22. Nxd6 {1-0 (41) Wei,Y (2721)
-Santos Ruiz,M (2560) Khanty Mansiysk 2019}) 15... Bxd4 16. Nxd4 $14 Nxd4 17.
g4 Nxb3 18. Qxb3 Bg6 19. Bg5 $1 h6 20. Bh4 Bh7 21. f4 g5 22. fxg5 Nd7 23. Nf3
Ne5 24. Nxe5 dxe5 25. Qe3 $1 hxg5 26. Bxg5 f6 27. Bh4 Qd4 28. Rac1 Qxb2 29. Rc6
({Better is} 29. Rcd1 $1 $16) 29... Qd4 30. Bxf6 Rf7 (30... b4 $14) 31. g5 $16
b4 32. Qxd4 exd4 33. Bxd4 (33. e5 $142 $1 {[%cal Re5e6] And now e6 would win.}
Bd3 34. e6) 33... Rd7 34. Bb2 Rd2 35. Bc1 Rd3 36. Kf2 {aiming for g6.} Rf8+ 37.
Kg2 {Strongly threatening g6.} Rff3 38. Rxc7 (38. Rh6 $1 $14) 38... Rg3+ $11
39. Kf2 Rdf3+ 40. Ke2 Bxe4 {( -> ...Rg2+)} 41. Kd1 Rd3+ 42. Bd2 Rg2 43. Rxe4
$16 {[%cal Re4e8]} Rgxd2+ {[%mdl 4096] Endgame KRR-KRR} 44. Kc1 {[%cal Re4e8]}
Rd1+ {[#]} 45. Kb2 $1 {[%cal Re4e8]} R1d2+ 46. Rc2 Rxc2+ 47. Kxc2 Rxh3 {
[#] KR-KR} 48. Re6 $1 ({Reject} 48. Rxb4 $6 Ra3 $11) 48... Rc3+ 49. Kb2 Ra3 50.
Rxa6 (50. Rg6+ $16 Kf7 51. Rxa6) 50... Kg7 $11 51. Ra8 (51. Kb1 $14 Rg3 52. Kc2
Rxg5 53. Kb3) 51... Kg6 $2 (51... Kh7 $1 $11 52. a6 Rc3) 52. a6 $16 {[%cal
Ba5a6,Ba6a7][%mdl 32] White is clearly better.} Kg7 (52... Kf7 $16 53. a7 Kg7)
53. a7 $18 Kh7 54. g6+ Kg7 55. Rb8 $2 {Weighted Error Value: White=0.15/
Black=0.18} ({White should play} 55. Kc2 $18) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.4"]
[White "Caruana, Fabiano"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "E20"]
[WhiteElo "2800"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,72,0,10,0,0,0,0,0,0,0,6,-10,0,0,0,8,43,15,3,-17,0,-4,-10,-44,-40,0,
41,38,43,0,46,-53,-23,-36,0,0,0,-110,-111,-50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 O-O 6. e4 d6 7. Nge2
b5 8. Nf4 {E20: Nimzo-Indian: 4 g3 and 4 f3.} exd5 9. Nfxd5 Nxd5 10. Qxd5 Qb6
11. cxb5 ({But not} 11. Qxa8 Bb7 $17) 11... Bb7 12. Qd2 d5 {[#] Strongly
threatening ...d4.} 13. a3 Bxc3 14. Qxc3 {[#]} d4 $146 ({Predecessor:} 14...
Re8 15. Be2 Nd7 16. O-O dxe4 17. fxe4 Rxe4 18. Bf3 {1/2-1/2 (18) Schaub,M 
(2323)-David Bordier,C (2330) ICCF email 2018}) 15. Qc2 a6 16. bxa6 {[%mdl 64]
[#] Overworked Piece} Bxa6 17. Bxa6 Qxa6 18. Qxc5 Rc8 $1 {[%cal Rc8c5]} 19. Qd5
Ra7 {[%cal Ba8a7,Ba7c7,Bc7c2,Bc2b2][%mdl 32]} (19... Nc6 $5 {[%cal Rc6b4]} 20.
Bd2 Rab8 $17) 20. Bd2 Rac7 21. Rd1 Rc2 (21... Rc5 $5 {[%cal Rc5d5]} 22. Qb3 Rc2
$11) 22. Qxd4 (22. Rf1 $14) 22... Nc6 $15 23. Qe3 {Threatening Bc3.} Rxb2 {
White must now prevent ...Rd8.} 24. Bc3 Rc2 25. Rf1 (25. Rd3 $1 $11 {keeps the
balance.}) 25... Qxa3 $17 26. Bd2 Qxe3+ (26... Qd6 {seems wilder.} 27. f4 Rd8
28. Rf2 h6 29. Ra1 Nb4) 27. Bxe3 {The position is equal.} Rxg2 28. Rd2 Rxd2 29.
Kxd2 $11 {[%mdl 4096] Endgame KRB-KRN} Ne5 30. Bf4 f6 31. Bg3 Kf7 32. f4 Nc4+
33. Kd3 Nb2+ 34. Ke3 Nc4+ 35. Kd3 Nb2+ 36. Ke3 Nc4+ {Weighted Error Value:
White=0.18/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.5"]
[White "Anton Guijarro, David"]
[Black "Dubov, Daniil"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2658"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,46,7,34,20,25,16,15,18,21,11,25,17,15,24,30,30,33,25,29,29,64,79,72,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 g6 2. d4 Nf6 3. Nf3 Bg7 4. e3 O-O 5. Be2
d5 6. cxd5 {E60: King's Indian: Unusual lines and Fianchetto Variation without
Nc3.} Nxd5 7. e4 Nb6 8. a4 a5 9. Be3 Nc6 10. O-O {[#]} Bg4 $146 ({Predecessor:
} 10... f5 11. exf5 Bxf5 12. Nc3 Nb4 13. Rc1 c6 14. Qb3+ Kh8 15. Ne5 N6d5 16.
Nxd5 Be6 {1/2-1/2 (39) Kovalyov,A (2651)-Puranik,A (2507) Philadelphia 2018})
11. Nbd2 e6 12. h3 Bxf3 13. Nxf3 Qe7 14. Qc1 Qb4 {[%cal Rc6d4]} 15. Bb5 Nxd4 {
[#] aiming for ...c6.} 16. Nxd4 ({White should try} 16. Qxc7 $16 Nxb5 17. axb5
(17. Qxb6 Nd6 $11)) 16... Bxd4 $11 {The position is equal.} 17. Bxd4 ({Don't
play} 17. Qxc7 Rac8 $17) 17... Qxd4 18. Qxc7 {Black must now prevent Rad1.}
Rfc8 19. Qxb7 Rab8 20. Qa7 Ra8 $1 {[%cal Ra8a7]} 21. Qb7 {[#] Threatens to win
with Rfd1.} Rab8 22. Qa7 Ra8 $1 {[%cal Ra8a7]} 23. Qb7 {And now Rfd1 would win.
} Rab8 {Weighted Error Value: White=0.06/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.6"]
[White "Yu, Yangyi"]
[Black "Deac, Bogdan-Daniel"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2704"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,7,22,13,8,20,16,0,4,14,16,2,13,7,6,0,8,9,10,12,10,-2,0,0,0,0,0,0,0,
0,1,3,3,1,3,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3.
Bb5 Nf6 4. d3 Bc5 5. c3 d5 {The position is equal.} 6. exd5 {C65: Ruy Lopez:
Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5.} Qxd5 {Strongly
threatening ...Bxf2+!} 7. Bc4 Qd6 8. b4 Bb6 9. Nbd2 O-O 10. a4 Bf5 11. Ba3 {
Hoping for b5.} ({Much worse is} 11. a5 {[#]} Bxf2+ $1 12. Kxf2 Bxd3 $15) 11...
e4 $1 {[%cal Re4f3]} ({Don't go for} 11... Bxd3 $2 12. b5 $16) 12. dxe4 Nxe4
13. Nxe4 Bxe4 14. Qxd6 cxd6 15. O-O-O Rac8 {White must now prevent ...Ne5.} 16.
Bd5 Bxd5 17. Rxd5 Ne5 18. Nxe5 dxe5 19. Kb2 Rfd8 20. Rxe5 Rxc3 $1 {[#] aiming
for ...Bd4.} 21. Rd1 {Rxd8+ would kill now.} Rcc8 22. Rxd8+ Rxd8 $11 {[%mdl
4096] Endgame KRB-KRB} 23. Re7 {[#]} Bd4+ $146 ({Predecessor:} 23... h5 24.
Rxb7 Bxf2 25. b5 Rd5 26. Bb4 h4 27. a5 Rg5 28. a6 Rxg2 29. Kb3 Rxh2 30. b6 Bxb6
31. Rxb6 h3 32. Rb5 Re2 33. Rh5 Re6 34. Rxh3 {1/2-1/2 (34) Huschenbeth,N (2605)
-Kryvoruchko,Y (2682) Warsaw 2020}) 24. Kb3 b5 $1 25. f3 bxa4+ 26. Kxa4 h5 27.
h3 Rc8 28. Rd7 Bb6 29. Kb3 Re8 30. Bc1 Re1 31. Bf4 Rb1+ 32. Kc4 {Not much
happened in this game.  Weighted Error Value: White=0.02/Black=0.01} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.7"]
[White "Navara, David"]
[Black "Sarana, Alexey"]
[Result "1/2-1/2"]
[ECO "B42"]
[WhiteElo "2691"]
[BlackElo "2649"]
[Annotator "TA"]
[PlyCount "181"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,181,32,47,41,43,42,43,41,45,36,45,30,56,45,48,52,45,45,72,78,77,77,
67,69,71,60,56,53,80,79,83,37,33,35,46,54,70,70,64,67,50,28,50,42,73,73,61,69,
64,35,38,42,100,108,91,96,112,68,67,64,70,63,62,43,39,49,40,25,26,0,37,35,33,
34,44,36,43,43,52,0,0,0,56,56,90,89,94,84,146,39,44,57,111,111,108,85,90,90,90,
90,90,90,122,122,114,118,163,126,233,222,162,54,65,57,222,0,47,0,215,51,51,51,
55,54,54,54,54,54,62,73,73,47,47,47,55,47,47,47,47,34,34,12,14,17,77,6,19,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5.
Nxd4 Ngf6 6. O-O e6 7. Re1 Be7 8. Bf1 O-O 9. c4 {[#]} Qc7 $146 ({Predecessor:} 
9... a6 10. Nc3 Ne5 11. b3 Bd7 12. Bb2 Qb8 13. f4 Qa7 14. h3 Nc6 15. Nd5 Bd8 {
0-1 (40) Rossolimo,N-Rogoff,K Malaga 1970}) 10. Nc3 a6 11. Be3 {B42: Sicilian:
Kan Variation: 5 Bd3.} b6 12. Rc1 Bb7 13. f3 {White is slightly better.} Rac8
14. a3 Qb8 15. b4 Kh8 16. Kh1 Rg8 17. Qd2 Bd8 18. Red1 Bc7 19. b5 Bd8 20. bxa6
Bxa6 21. Ndb5 Be7 22. Nxd6 Bxd6 23. Qxd6 Qxd6 24. Rxd6 Bxc4 25. Rdd1 (25. Nb5 {
looks sharper.} Bxf1 26. Rxf1 Ra8 27. Rfd1 Ne5 28. Bg1) 25... Bxf1 26. Rxf1 Ra8
27. Nb5 Rgb8 28. Rc7 Kg8 29. Kg1 h6 30. Kf2 Nc5 31. Ke2 Rc8 32. Bxc5 bxc5 33.
Rxc8+ Rxc8 $16 {[%mdl 4096] Endgame KRN-KRN} 34. a4 Ra8 35. Ra1 Ra5 ({Better is
} 35... Ra6 $14) 36. Nd6 Nd7 37. Nc4 Ra7 38. a5 Nb8 $1 39. Ne5 f6 {[#]} 40. Rb1
$1 Ra8 41. Nc4 (41. Nd3 {is more complex.} c4 42. Nc5 Nc6 43. Ra1 Rxa5 44. Rxa5
Nxa5 45. Nxe6 Nc6 46. Kd2) 41... Nc6 42. Ke1 Nb4 $1 ({Wrong is} 42... Nxa5 $2
43. Ra1 $1 $18) 43. Rd1 Nc6 44. Rb1 Nb4 $1 ({Not} 44... Nxa5 $2 45. Ra1 $1 $18)
45. Kd2 Rd8+ 46. Kc3 Rd3+ 47. Kb2 Kf8 48. Ra1 {Threatens to win with a6.} Na6
49. Kc2 (49. Ra3 $5 {[%cal Ra3d3]} Rd1 50. Rb3 $14) 49... Nb4+ 50. Kb2 Na6 51.
Ra3 Rd4 52. Kc3 Rd1 53. Ne3 Rc1+ (53... Rb1 $142) 54. Kb2 (54. Nc2 $1 $16)
54... Re1 $1 $14 55. Rb3 Nb4 (55... Re2+ $14 56. Ka3 Ke7) 56. Nc2 $1 $16 {
[%cal Rc2e1]} Nxc2 57. Kxc2 {KR-KR} (57. a6 {is interesting.} Ra1 58. Rb6 Rxa6
59. Rxa6 Ne1 60. Kc3) 57... Ra1 58. Rb5 c4 59. Kc3 Ra4 60. h4 g5 61. h5 $1 Ke7
62. Kd4 Kd7 63. Rb7+ Ke8 (63... Kd6 $16) 64. Ra7 $18 e5+ {[#]} 65. Kc3 (65. Kd5
$1 $18) 65... Kf8 $1 $14 66. Ra8+ Kg7 $2 ({Black should try} 66... Kf7 $1 $14
67. a6 Kg7) 67. Ra7+ $2 (67. g4 $18) 67... Kg8 68. Ra8+ $2 (68. a6 $14) 68...
Kg7 $18 69. Kb2 Kf7 70. Ra7+ Kg8 71. Ra6 Kf7 72. Ra8 Kg7 73. a6 Kh7 74. Kc3 Kg7
75. a7 g4 $1 76. fxg4 Kh7 $1 77. Rf8 Rxa7 78. Rxf6 {Rg6 is the strong threat.}
Rd7 $1 79. Rc6 Rd3+ 80. Kb4 {Threatening Rc5.} Re3 81. Rxc4 {And now Kc5 would
win.} Kg7 $1 {[#]} 82. Kb5 (82. Kc5 $1 $16 {[%cal Rc5d5] Hoping for Kd5.} Kf6
83. Rb4) 82... Kf6 $11 {The position is equal.} 83. Rc6+ Kg5 84. Rg6+ Kh4 85.
Rxh6 (85. Kc5 $5 {[%cal Rc5d5]} Rxe4 86. Rxh6 Rxg4 87. Rh7 $11) 85... Kxg4 86.
Re6 Rxe4 87. h6 {White threatens h7 and mate.} Kg5 88. h7 Rh4 89. Rxe5+ Kf6 90.
Re3 Rxh7 91. Rh3 {Weighted Error Value: White=0.09/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.8"]
[White "Petrosyan, Manuel"]
[Black "Korobov, Anton"]
[Result "1/2-1/2"]
[ECO "A47"]
[WhiteElo "2605"]
[BlackElo "2690"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,76,0,4,0,0,0,0,0,10,8,7,11,23,15,22,0,0,0,0,0,0,0,0,0,0,0,6,13,31,13,
18,5,21,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-52,-41,-47,-62,-97,-89,-96,-93,-106,-19,
-19,-23,-25,-16,-8,0,0,0,-7,0,0,0]} 1. d4 Nf6 2. Nf3 e6 3. Bf4 b6 4. e3 Bb7 5.
h3 d5 6. Nbd2 {A47: 1 d4 Nf6 2 Nf3 b6: Torre, London and Colle Systems.} Bd6 7.
Bd3 O-O 8. O-O Ne4 {[#]} 9. Bxd6 $146 ({Predecessor:} 9. c3 Nd7 10. Qc2 Ndf6
11. Ne5 h6 12. f3 Nxd2 13. Qxd2 c5 14. Rae1 Qc7 15. Bh2 {1-0 (32) Linares
Napoles,O (2255)-Tarasova,V (2226) Chess.com INT 2021}) 9... cxd6 10. c4 f5 11.
cxd5 Bxd5 12. Qb1 {[%cal Rd2e4]} Nxd2 13. Nxd2 Nc6 14. e4 fxe4 15. Bxe4 Qh4 16.
Bxd5 exd5 17. Qd1 Qxd4 18. Nf3 Qe4 19. Re1 Qf5 20. Qd2 Kh8 21. Re2 Rae8 22.
Rxe8 Rxe8 23. Rd1 Ne5 24. Nd4 Qg6 25. b3 h6 26. Kh1 Nd7 27. Nb5 Nf6 28. Nxd6 ({
White should try} 28. Kg1 $11) 28... Re6 $15 29. Nb5 Ne4 $1 {[%cal Re4d2]} 30.
Qd4 {[#]} Rc6 $1 31. Na3 Qd6 32. Nb1 {[#]} Qf4 (32... Qc5 $1 $17 33. Qxc5 Rxc5)
33. f3 $11 Ng3+ 34. Kh2 Qc7 35. Qxd5 {Hoping for Qd8+.The position is equal.}
Ne2+ 36. Kh1 Ng3+ 37. Kh2 {aiming for Qd8+.} Ne2+ 38. Kh1 Ng3+ {Weighted Error
Value: White=0.07/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.9"]
[White "Sargissian, Gabriel"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2664"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,60,7,16,12,20,26,27,7,3,0,0,0,0,0,0,0,0,-8,-8,-8,-10,-12,-6,-5,-9,-4,
-4,-19,-12,-14,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nf3
Bg7 4. g3 O-O 5. Bg2 c6 6. O-O d5 7. cxd5 cxd5 8. Ne5 Nfd7 9. Bxd5 {D79:
Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5).} Nxe5 10.
dxe5 {[#]} Nc6 $146 ({Predecessor:} 10... Bxe5 11. Nc3 Qb6 12. Bh6 Bg7 13. Bxg7
Kxg7 14. Rc1 Rd8 15. Na4 Qb4 16. a3 Qg4 {1-0 (46) So,W (2770)-Duda,J (2743)
Chess.com INT 2020}) 11. Bxc6 {White has an edge.} bxc6 {The position is equal.
} 12. Qxd8 Rxd8 13. Bf4 Rb8 14. Nc3 Rxb2 15. Rfd1 Re8 16. Rab1 Rxb1 17. Rxb1 h6
18. h4 g5 19. hxg5 hxg5 20. Bxg5 Bxe5 21. Rb3 Be6 22. Ra3 Bxc3 23. Rxc3 Bxa2
24. Rxc6 $11 {[%mdl 4096] Endgame KRB-KRB} a5 25. Ra6 Bc4 26. Rxa5 f6 27. Be3
Bxe2 28. Kg2 Kf7 29. f3 Rc8 30. Rc5 Rxc5 {A rather calm draw.  Weighted Error
Value: White=0.03/Black=0.01} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.10"]
[White "Tari, Aryan"]
[Black "Sjugirov, Sanan"]
[Result "1/2-1/2"]
[ECO "B52"]
[WhiteElo "2646"]
[BlackElo "2663"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,97,-11,-8,-9,-8,-6,0,0,-4,0,39,33,39,21,41,39,44,24,52,54,32,28,42,
17,10,10,25,10,11,10,43,41,45,38,56,46,42,42,92,87,81,55,102,81,116,107,139,81,
91,0,107,95,93,82,94,97,180,175,200,183,200,205,213,197,206,68,68,60,60,54,82,
0,0,0,87,87]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Qe2
Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4 11. Nbd2 Nxd2 12. Bxd2 Be7 13. g3
$1 {[%mdl 4] is now more promising than 13.Rac1. B52: Sicilian: Moscow
Variation with 3...Bd7.} O-O 14. Kg2 {[#]} Rae8 $146 ({Predecessor:} 14... Rac8
15. h4 f6 16. exf6 Bxf6 17. Bc3 Qf7 18. Rad1 Rce8 19. b4 a6 20. a4 Qh5 {
1-0 (50) Giri,A (2780)-Grandelius,N (2670) chess24.com INT 2021}) 15. Rad1 {
The position is equal.} h6 16. h4 f5 17. exf6 Bxf6 18. Bc3 Rf7 19. Rfe1 Bd8 20.
Rd3 Bb6 21. b4 a6 22. a4 {[%cal Ba2a4,Ba4a5][%mdl 32] aiming for b5.} Rf5 23.
h5 Nd8 ({Avoid the trap} 23... Rxh5 $2 24. g4 $18) 24. a5 Bc7 25. Nh4 Rf6 26.
Ng6 Nf7 27. Bd2 Nd6 28. Bf4 Nc4 29. Qg4 Bxf4 30. Nxf4 Qf7 31. Rdd1 Nd6 32. Re5
Nc4 33. Re2 Nd6 34. Rc1 Re7 35. Rc5 ({White should play} 35. Ng6) 35... Re8 36.
Rc1 ({Better is} 36. Rec2 $16) 36... Ne4 (36... Re7 $1 $11 {keeps the balance.}
) 37. Rec2 $16 {Threatens to win with Rc7.} Nd6 38. Ng6 $36 {[%mdl 2048]
Keeping Black busy.} Rf5 39. Ne5 Qxh5 (39... Qf6 $16 {is a better defense.})
40. Qxh5 $18 Rxh5 41. Rc7 Rf5 {[#]} 42. Rd7 $1 {[%cal Rd7d6]} Nc4 43. Rxb7 ({
Don't do} 43. Nxc4 $6 Rc8 $16) 43... Rc8 {[#] Black wants to play ...Ne3+!} 44.
Nd3 (44. Rc3 $1 $18) 44... Rf7 $14 45. Rxf7 Kxf7 46. Nc5 Rc6 47. b5 (47. Kf3
$16) 47... axb5 $11 48. a6 Ke7 (48... Rc8 $1 $11) 49. Rb1 {Weighted Error
Value: White=0.12/Black=0.22} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.11"]
[White "Volokitin, Andrei"]
[Black "Aronian, Levon"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2652"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,77,41,41,6,3,0,36,18,17,20,29,0,0,0,104,106,111,111,110,108,106,114,
101,125,125,117,104,66,75,73,108,96,119,115,187,183,234,222,334,326,360,360,
381,303,487,478,635,662,663,634,635,638,625,614,572,539,744,712,615,615,615,
611]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. a4 Rb8
8. c3 d6 9. d4 Bb6 10. a5 {C78: Ruy Lopez: Archangelsk and Möller Defences.}
Ba7 (10... Bxa5 $2 11. dxe5 (11. d5 Ne7 $18) 11... dxe5 12. Qxd8+ Kxd8 13. Bd5
$18 (13. Bxf7 Bb6 $16)) 11. h3 Bb7 12. Be3 {White is slightly better.} Nxe4 13.
Re1 Ne7 14. dxe5 Bxe3 15. Rxe3 dxe5 {[#]} (15... O-O $11) 16. Rd3 $146 {
[%cal Rd3d8][%mdl 2048] White is on the roll.} (16. Nxe5 $6 Qxd1+ 17. Bxd1 Rd8
$11) ({Predecessor:} 16. Nxe5 Qxd1+ 17. Bxd1 f6 18. Nd3 Rd8 19. Bf3 Kf7 20. Na3
Nd6 21. Nc5 Bxf3 22. Rxf3 {1-0 (52) Abdusattorov,N (2634)-Maurizzi,M (2488)
chess24.com INT 2021}) 16... Nd6 {Strongly threatening ...e4.} 17. Ng5 Nd5 {[#]
} 18. Nxf7 $1 {[%mdl 512]} Nxf7 (18... Kxf7 19. Bxd5+) 19. Bxd5 Bxd5 20. Rxd5
Qh4 21. Nd2 $1 O-O 22. Qg4 (22. Qe2 {looks sharper.} Rbe8 23. Ne4 Ng5 24. Nxg5
Qxg5 25. Re1) 22... Qxg4 23. hxg4 c6 24. Rd7 Ng5 25. Ra7 Rbd8 {[#]} (25... Ra8
$16 26. Re7 Rae8) 26. Nb3 $1 $18 c5 (26... Ra8 $142 27. Rxa8 Rxa8) 27. Nxc5 ({
Resist} 27. Rxa6 $6 c4 $16) 27... Rd2 {[#]} (27... e4 $142 28. Rxa6 Rd2) 28.
Nd7 $1 {[%cal Rd7f8]} (28. Nxa6 {gets mated.} Rfxf2 29. Kh1 Rxg2 30. Ra8+ Kf7
31. Rf1+ Kg6 32. Rf6+ Kxf6 33. Rf8+ Kg6 34. Rg8 Nf3 35. Rxg7+ Kxg7 36. Nc7 Rh2#
) 28... Rd8 29. Nxe5 Rxb2 30. Re1 h6 $2 (30... Re8 31. f4 Nf7 32. Rxa6 (32.
Rxf7 Rxe5 33. Rxg7+ Kxg7 $16) 32... b4) 31. Ng6 {White is clearly winning.} Kh7
32. Nh4 b4 33. Ree7 Rg8 34. cxb4 Rxb4 35. f3 h5 36. Nf5 hxg4 37. Rxg7+ Kh8 38.
Rxg8+ Kxg8 39. Rg7+ {Weighted Error Value: White=0.10/Black=0.38} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.12"]
[White "Donchenko, Alexander"]
[Black "Vitiugov, Nikita"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2648"]
[BlackElo "2727"]
[Annotator "TA"]
[PlyCount "110"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,110,0,0,0,8,10,6,10,11,14,18,14,18,16,18,16,16,15,23,24,27,6,6,6,6,6,
10,3,10,0,0,0,0,-2,0,-30,11,0,0,0,0,0,0,-37,0,-86,-94,-185,-166,-175,-172,-152,
-166,-155,-126,-133,-142,-105,-112,-243,-228,-240,-214,-327,-317,-294,-306,
-276,-289,-279,-308,-335,-335,-335,-334,-330,-328,-321,-318,-299,-299,-476,
-483,-477,-480,-423,-425,-500,-487,-763,-795,-848,-816,-828,-792,-816,-801,
-1095,-995,-878,-772,-630,-536]} 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bb4 5. d3
d6 6. a3 {A28: English Opening: Four Knights Variation.} Bc5 {Threatening ...
Ng4.} 7. b4 Bb6 8. Be3 {The position is equal.} Bxe3 9. fxe3 O-O 10. Be2 Ne7
11. O-O Ng6 {[#]} 12. a4 $146 ({Predecessor:} 12. Qd2 Re8 13. Rae1 a5 14. b5 c6
15. Bd1 h6 16. d4 Qe7 17. Bc2 Bd7 18. d5 cxb5 19. cxb5 {0-1 (46) Caruana,F 
(2800)-So,W (2778) Saint Louis 2021}) 12... a5 13. b5 Qe7 14. Qe1 c6 15. Nh4
Nxh4 16. Qxh4 Re8 17. Rab1 Be6 18. Rb2 Rac8 19. Qg3 d5 20. bxc6 bxc6 21. Qxe5 {
[%cal Re4d5]} dxc4 22. dxc4 Qa7 23. Qg3 Nd7 24. e5 Nc5 25. Rd2 Rb8 26. Rd4 Rb2
(26... Rb3 $5 {[%cal Rb3c3]} 27. Ne4 Nxe4 28. Rxe4 Ra3 $15) 27. Bf3 {[#]} (27.
Qf3 $11 {keeps the balance.}) 27... Nb3 $1 $17 {[%cal Rb3d4]} 28. c5 (28. Nd1
$17 Nxd4 29. Nxb2 Nxf3+ 30. Qxf3) 28... Nxd4 $19 29. exd4 Qd7 30. Rd1 Bb3 $36 {
[%mdl 2048] Black is in control.} 31. Rd3 Bc2 32. Rd2 {[#]} Reb8 $1 33. e6 fxe6
34. Qd6 {White does not recover from this.} (34. d5 $17 Bf5 35. Rxb2 Rxb2 36.
d6) 34... Qxd6 35. cxd6 Kf8 36. Bxc6 (36. Rf2 {keeps fighting.} Bf5 37. Rf1)
36... Bf5 37. Rxb2 Rxb2 {[%mdl 4096] Endgame KRB-KBN} 38. Nb5 Rd2 39. h3 Kf7
40. g4 Bc2 41. d7 Ke7 42. Nd6 Rxd4 43. Nb7 Bd3 44. Kf2 {Hoping for Ke3.} Ba6 {
White must now prevent ...Bxb7.} 45. Nc5 {[#]} (45. d8=Q+ $142 Rxd8 46. Nxd8
Kxd8 47. h4) 45... Rd6 $1 {Black is clearly winning.} 46. Be4 (46. d8=R Kxd8)
46... h6 47. Ke3 Bc4 48. Bb7 Bd5 49. h4 (49. Ba6 $142) 49... Bxb7 {[%mdl 64]
Overworked Piece} 50. Nxb7 Rxd7 51. Nxa5 {KR-KN} e5 52. Ke4 Ke6 53. Nc6 Rd1 54.
a5 Re1+ 55. Kd3 Kd6 {Weighted Error Value: White=0.32/Black=0.02} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.13"]
[White "Harikrishna, Pentala"]
[Black "Chigaev, Maksim"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2719"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,61,9,0,21,18,49,51,50,33,46,40,51,52,36,39,48,58,66,40,41,20,23,26,
22,12,29,24,16,0,0,0,1,0,496,471,727,750,1329,1366,1335,1327,1265,1214,1179,
1126,1442,1395]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3
Bg7 7. Nf3 c5 8. h3 O-O 9. Be2 b5 {D85: Exchange Grünfeld: Unusual White 7th
moves and lines with 7 Nf3.} 10. O-O {[#]} ({Much weaker is} 10. Bxb5 Qa5 $17)
10... cxd4 $146 ({Predecessor:} 10... b4 11. cxb4 cxb4 12. Be3 Nd7 13. a3 Bb7
14. Qb1 a5 15. axb4 axb4 16. Rxa8 Bxa8 17. Bd3 {0-1 (60) Svane,R (2570)
-Swiercz,D (2645) Moscow 2017}) 11. cxd4 Bb7 {White is slightly better.} 12.
Qd3 b4 13. Bf4 Ba6 14. Qe3 Bxe2 15. Qxe2 a5 16. Rac1 Qb6 17. d5 a4 18. Be5 Bxe5
19. Nxe5 b3 {Threatening ...b2.} 20. axb3 Qxb3 21. Qd2 a3 22. Ra1 a2 23. Rfe1
Rc8 24. Qf4 f6 {[%mdl 8192] [#]} (24... Rf8 $11 {and Black is okay.}) 25. Qg4
$1 $18 {White is clearly winning.} Qc3 (25... Na6 $142 26. Nxg6 hxg6) 26. Qe6+
Kh8 27. Nf7+ Kg7 {[#]} 28. Nd8 $1 {[%mdl 576] Decoy} Rxd8 29. Qxe7+ {[%mdl 64]
Double Attack} Kh6 30. Qxd8 Qe5 31. d6 {Weighted Error Value: White=0.05/
Black=0.52} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.14"]
[White "Swiercz, Dariusz"]
[Black "Fedoseev, Vladimir"]
[Result "0-1"]
[ECO "B96"]
[WhiteElo "2647"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,124,22,9,18,22,14,0,12,6,14,13,22,5,31,0,0,0,43,18,33,35,52,17,53,29,
34,17,17,0,61,59,40,50,119,46,153,72,100,60,45,26,56,0,0,11,43,-4,0,0,47,45,41,
27,25,21,23,0,0,0,0,-43,-44,-59,-59,-60,-60,-62,-67,-100,-105,-101,-105,-274,
-262,-254,-252,-318,-318,-318,-316,-316,-305,-316,-302,-252,-154,-294,-221,
-29957,-29957,-29957,-29961,-29962,-29954,-29962,-29961,-29963,-29966,-29977,
-29978,-29978,-29979,-29979,-29978,-29980,-29981,-29981,-29982,-29982,-29982]} 
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bh4
Qb6 9. a3 Nbd7 $1 {[%mdl 4] now scores much better than the old 9...Be7. B96:
Sicilian Najdorf: 6 Bg5 e6 7 f4, lines other than 7...Qb6 and 7...Be7.} (9...
Qxb2 $2 10. Na4 $18) 10. Bf2 Qc7 ({Not} 10... Qxb2 $2 11. Na4 $18) 11. Bd3 {[#]
} e5 $5 $146 {[%mdl 8] The position is equal. New and interesting.} ({
Predecessor:} 11... b5 12. Qe2 Bb7 13. O-O-O Be7 14. Kb1 g6 15. Rhe1 Nc5 16. g4
g5 17. fxg5 hxg5 {1-0 (54) Swiercz,D (2655)-Xiong,J (2710) Saint Louis 2021})
12. Nde2 b5 13. O-O Bb7 14. Qd2 Be7 15. Kh1 Rd8 16. Rae1 g6 17. Bg1 h5 18. h3
Kf8 19. Bh2 (19. f5 $5 {[%cal Rf5g6]} g5 20. Be3 $11 (20. Qxg5 Nxe4 {[%mdl 64]
Discovered Attack} 21. Qc1 Nef6 $17)) 19... Kg7 20. f5 Qc8 21. fxg6 fxg6 22.
Nd5 Rde8 (22... Nxd5 $11 23. exd5 Nc5) 23. Nxe7 $14 Rxe7 24. Qg5 {aiming for
Nd4!} Rf7 {[#]} (24... Rf8 $1 $14) 25. Ng3 ({Better is} 25. Nd4 $1 $16 {
[%cal Rd4f5][%mdl 512] Strongly threatening Nf5+.} Kh7 26. Nf3) 25... Qf8 (
25... Kh7 $14) 26. Bg1 ({Don't take} 26. Nf5+ $6 Kh7 $14) (26. a4 $142 $1)
26... Kh7 27. Be3 Qg7 $1 28. Rf2 h4 29. Qxh4+ Kg8 30. Qg5 {Threatens to win
with Ref1.} Nf8 $1 {[%cal Rf8e6] Black wants to play ...Ne6.} 31. Ne2 (31. Ref1
$5 {[%cal Rf2f6]} Ne6 32. Qxf6 Rxf6 33. Rxf6 $14) 31... Ne6 32. Qg3 Nxe4 33.
Bxe4 Bxe4 34. Nc3 Rxf2 35. Qxf2 Bb7 {...Rxh3+ is the strong threat.} 36. Qg3 (
36. Kh2 {feels hotter.} d5 37. Bd2 e4 38. Kg1 g5 39. Ne2) 36... Qf6 37. Kg1 {
Hoping for Rf1.} Rh5 38. Rf1 Rf5 39. Rxf5 Qxf5 40. Qf2 d5 {And now ...d4 would
win.} 41. Qxf5 gxf5 $15 {[%mdl 4096] Endgame KBN-KBN} 42. Ne2 d4 43. Bd2 f4 44.
c3 $2 {This costs White the game.} (44. Nc1 $17 {was necessary.}) 44... d3 $19
45. Nc1 {[#]} Nc5 46. b4 Ne4 47. Nxd3 Nxd2 48. Nxe5 Be4 49. Nd7 Kf7 50. Nc5 Bd5
51. Nxa6 (51. Nd3 $17) 51... Ne4 52. Nc5 $2 (52. Nc7 $19 Bc6 53. h4) 52... Nxc5
{Black mates.} 53. bxc5 {KB-KP} Ke6 54. Kf2 Kd7 55. g3 fxg3+ 56. Kxg3 Kc6 57.
Kf2 Kxc5 58. Ke3 Kc4 59. Kd2 {[#]} Be4 $1 {[%cal Re4g6]} 60. h4 Bf5 61. h5 Bh7
62. h6 Bg6 {Weighted Error Value: White=0.34/Black=0.13} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.15"]
[White "Bluebaum, Matthias"]
[Black "Maghsoodloo, Parham"]
[Result "0-1"]
[ECO "E40"]
[WhiteElo "2640"]
[BlackElo "2701"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,118,14,7,20,27,29,29,27,13,18,18,11,8,52,0,0,0,0,0,0,0,12,-2,0,-8,62,
60,79,77,100,95,89,0,0,0,53,9,12,14,12,20,87,0,0,-75,-75,-75,-67,-69,-60,-75,
-78,-78,-78,-83,-39,-58,-26,-114,-114,-110,-116,-112,-89,-115,-94,-115,-111,
-118,-118,-111,-104,-151,-144,-144,-126,-122,-119,-125,-102,-115,-112,-104,
-100,-135,-119,-224,-231,-465,-435,-565,-100,-5132,-5118,-4134,-5132,-5129,
-5129,-5114,-5114,-906,-178,-545,-542,-543,-475,-668,-656,-29985,-29986]} 1. d4
d5 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 Nf6 6. e3 c6 {E40: Nimzo-Indian:
Rubinstein (4 e3): Unusual Black 4th moves.} 7. a4 O-O 8. Ba3 {8.Nf3 is not
played anymore.} Re8 {White has an edge.} 9. Nf3 {[#]} Qc7 $1 $146 {[%mdl 8] A
top novelty.} ({Predecessor:} 9... b6 10. Bd3 Ba6 11. Ne5 c5 12. O-O Qc7 13.
Rc1 dxc4 14. Nxc4 Nbd7 15. Nd6 Qxd6 16. Bxa6 {1-0 (52) Korobov,A (2690)-Anton
Guijarro,D (2658) Ciudad Real 2021}) 10. Rc1 Nbd7 11. Be2 a6 12. Qb3 ({White
should try} 12. c5 $14) 12... dxc4 $11 13. Qxc4 b5 14. axb5 axb5 15. Qb3 e5 16.
c4 exd4 17. Nxd4 b4 (17... bxc4 $11 18. Bxc4 Ne5) 18. Bxb4 $14 Rb8 19. Qa3 {
Hoping for Bd6.} Rxb4 {[%mdl 64] Remove Defender, Decoy} 20. Qxb4 {Threatens
to win with 0-0.} c5 21. Qb2 ({White should play} 21. Nb5 $16 Qb7 22. Qa5 Qxg2
23. Rf1) 21... cxd4 $11 22. exd4 Nh5 (22... Qa5+ $11 23. Qd2 Qxd2+ 24. Kxd2
Ne4+ 25. Kc2 Nxf2) 23. O-O Nf4 24. Rfe1 Qa5 $1 25. Kf1 Ba6 (25... Re4 $11) 26.
Ra1 (26. g3 $16 Nxe2 27. Rxe2) 26... Qf5 $40 {[%cal Rf5e4][%mdl 128] Black
attacks.} ({Of course not} 26... Qg5 27. g3 $16) 27. Bf3 ({Not} 27. Rxa6 $2 Nd3
$19) (27. Qd2 $11 {remains equal.} Re6 28. Ra5) 27... Bxc4+ $17 28. Kg1 Rf8 29.
Qb7 g6 30. Ra8 Rxa8 31. Qxa8+ Kg7 32. Qe4 Qg5 {aiming for ...Nh3+.} (32... Qxe4
{is interesting.} 33. Bxe4 Ne2+ 34. Kh1 Nf6 35. Bb7 Nxd4 36. Rd1 Nb3) 33. Qe3
Qf6 (33... Qa5 {is more complex.} 34. Rc1 Nd5 35. Qe1 Qa6 36. h4 N5f6) 34. d5 (
34. Rc1 $11 {keeps the balance.} Be6 35. Rc7) 34... Bxd5 35. Bxd5 Nxd5 36. Qd2
N7b6 37. Re4 Nc3 38. Re1 Nbd5 39. Qd3 h5 40. h3 h4 41. Re8 Nf4 42. Qe3 Ne6 43.
Ra8 Nd5 44. Qc1 Nec7 45. Ra3 Nb5 46. Ra8 Ndc7 (46... Ne7 {seems wilder.} 47.
Qe1 Nd4 48. Ra4 Nef5 49. Qe4 Kh7) 47. Rb8 Qe5 48. Rd8 (48. Kh1 $17 {was worth
a try.}) 48... Nc3 $19 49. Qd2 (49. Kh1) 49... N7d5 50. Ra8 Nb6 $2 (50... Ne2+
$19 51. Kh1 Ndc3) 51. Ra6 $2 {[%mdl 8192] Loses the game.} (51. Rd8 $17) 51...
Nc4 52. Qd8 {[#]} Ne2+ $1 53. Kf1 Nd4 {( -> ...Nd2+)} 54. Ra2 Qe4 {[%cal Re4b1]
} 55. Kg1 Qb1+ 56. Kh2 {[#]} Nf3+ {[%mdl 512]} 57. gxf3 {White threatens Ra8
and mate.} Qxa2 58. Qd4+ (58. Qxh4 $142 Qe2 59. Kg3) 58... f6 59. Qxh4 Ne3 {
Weighted Error Value: White=0.56/Black=0.30} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.16"]
[White "Xiong, Jeffery"]
[Black "Shevchenko, Kirill"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2700"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,84,10,6,14,18,33,19,46,36,38,37,42,41,43,43,48,14,14,14,14,14,14,14,
13,9,15,16,21,17,26,16,16,20,18,16,12,0,0,-18,-8,-14,0,-9,0,0,0,0,0,-24,-8,-33,
-6,-165,-202,-297,-307,-315,-266,-412,-397,-346,-196,-170,-172,-346,-368,-692,
-688]} 1. Nf3 Nf6 2. d4 g6 3. Nbd2 Bg7 4. e4 d6 5. c3 O-O 6. Be2 Nc6 7. O-O e5
8. dxe5 Nxe5 9. Nxe5 dxe5 10. Qc2 Qe7 {B07: Pirc Defence: Miscellaneous
Systems.} 11. Nc4 b6 12. Bg5 {[#]} Ba6 $146 {The position is equal.} ({
Predecessor:} 12... Bb7 13. f3 a5 14. a4 Rfd8 15. Kh1 h6 16. Bh4 Ba6 17. Ne3
Bxe2 18. Qxe2 Rd6 {1-0 (51) Ganguly,S (2595)-Pichot,A (2480) Caleta 2015}) 13.
Ne3 Bxe2 14. Qxe2 Qe6 15. f3 h6 16. Bh4 Nh5 17. Qc4 Qxc4 18. Nxc4 f6 19. Rfd1
Rfd8 20. b4 Nf4 21. Kf1 Kf8 22. Bf2 Ke8 23. g3 Ne6 24. Ke2 Rxd1 25. Rxd1 Rd8
26. Ra1 h5 27. Be3 f5 28. Bd2 Bf6 29. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} a6 30.
Be3 Rd7 31. a5 b5 32. Nb2 f4 33. Bf2 g5 34. c4 c6 35. Rc1 $2 {[#] Now White is
beyond hope.} (35. cxb5 $11 {and White has nothing to worry.} cxb5 36. Nd3)
35... g4 $19 36. fxg4 (36. cxb5 $142 cxb5 37. Rd1) 36... hxg4 37. cxb5 cxb5 38.
Nd3 (38. Nd1 {keeps fighting.} Be7 39. Bb6) 38... f3+ 39. Kd2 Ng5 (39... Bg5+
$142 40. Be3 Rd4) 40. Re1 Rh7 41. h4 {[#]} (41. Bg1 {only move.}) 41... gxh3
42. Bc5 $2 (42. Nc5 Rh6 43. Rh1) 42... f2 {Weighted Error Value: White=0.36/
Black=0.11} (42... h2 $2 43. Nf2 $19) 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.17"]
[White "Hovhannisyan, Robert"]
[Black "Artemiev, Vladislav"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2622"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,60,14,20,20,16,16,16,16,16,25,17,15,14,16,17,56,59,54,55,98,86,105,
93,83,90,116,104,109,35,35,15,24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6
2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. O-O c5 7. dxc5 Nec6 {B12: Caro-Kann:
Advance Variation.} 8. Be3 Nd7 9. c4 dxc4 10. Na3 {[%cal Bb1a3,Ba3c4,Bc4d6]
[%mdl 32]} Bxc5 11. Nxc4 {aiming for Bxc5. is cutting edge theory.} O-O 12.
Bxc5 Nxc5 13. Qc1 Bd3 {[#]} 14. Rd1 $1 {Hoping for Qe3.} Bxe2 15. Rxd8 {[#]}
Raxd8 $146 ({Predecessor:} 15... Rfxd8 16. Nd6 Nd3 17. Qe3 Bxf3 18. Qxd3 Nxe5
19. Qe3 Rxd6 20. Qxe5 Rd5 21. Qe3 Bh5 {1-0 (78) Scuderi,D (2275)-Ignatov,B 
(2243) ICCF email 2017}) 16. Nd6 b6 17. Qe3 Bxf3 18. gxf3 Nb4 {Threatening ...
Nc2.} 19. Qd2 a5 20. Rd1 (20. a3 $16 Nd5 21. Rd1) 20... Nxa2 $14 21. Kh1 Nb4
22. Rg1 Nbd3 {The position is equal.} 23. Rxg7+ Kxg7 24. Qg5+ Kh8 25. Qf6+ Kg8
{[#] Threatens to win with ...h6.} 26. Qg5+ Kh8 {Black wants to play ...Nxe5!}
27. Qf6+ Kg8 28. Qg5+ Kh8 {White should prevent ...Nxe5!} 29. Qf6+ Kg8 {
White must now prevent ...h6.} 30. Qg5+ Kh8 {Weighted Error Value: White=0.07/
Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.18"]
[White "Tabatabaei, M. Amin"]
[Black "Eljanov, Pavel"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2639"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,87,14,22,0,0,0,20,8,5,1,0,0,24,0,0,0,22,0,0,-9,0,-7,-12,-24,-2,0,7,0,
12,-8,10,-4,-4,-5,-14,-18,-12,-19,0,-35,-42,-47,-31,-44,-22,-60,-52,-45,0,-41,
-61,-45,-23,-23,-22,-15,-27,-15,-10,-16,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2.
Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8
9. Nc3 Be7 {[#]} 10. a4 $146 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} ({
Predecessor:} 10. Rd1+ Ke8 11. g4 Nh4 12. Nxh4 Bxh4 13. f3 h5 14. h3 hxg4 15.
hxg4 f6 16. exf6 gxf6 17. Bf4 f5 18. g5 Rh5 {1/2-1/2 (42) Shankland,S (2714)
-So,W (2778) Saint Louis 2021}) 10... Nh4 11. Rd1+ Ke8 12. Nd4 Nf5 13. Nde2 a5
14. Ne4 Nh4 15. Nd4 Nf5 16. Ne2 Nh4 17. Nd4 Nf5 18. Nf3 Be6 19. h3 (19. b3 {
with more complications.} Rd8 20. Bf4 Bd5 21. Ned2 h5 22. e6) 19... Bd5 20. Re1
b6 21. Bf4 Kd7 22. Rad1 Kc8 23. b3 h5 24. c4 (24. Neg5 {is more complex.} Bb4
25. Bd2 Kb7 26. c3 Bc5 27. c4) 24... Be6 25. Neg5 (25. Nfg5 {is interesting.}
Bxg5 26. Nxg5 c5 27. Be3 Kb7 28. f3) 25... Bxg5 26. Nxg5 c5 27. Rd3 Kb7 28. g4
Nd4 29. f3 Raf8 30. Kg2 Bc8 31. Ne4 Re8 32. Bg3 Bd7 33. Nc3 Bc6 34. Ne2 Ne6 35.
Nf4 Rd8 {[#] Threatens to win with ...Nxf4+.} 36. Red1 hxg4 37. hxg4 {White
wants to play Nxe6.} Nd4 {The position is equal.} 38. Bf2 {[%cal Rf2d4]} ({
But not} 38. Ne2 Nxf3 39. Rxd8 Nd4+ 40. Rd5 Nxe2 $17) 38... Rhe8 39. Bxd4 cxd4
40. Rxd4 Rxd4 41. Rxd4 Rxe5 {[#] Hoping for ...Re3.} 42. Kf2 Kc8 43. Nh5 g5 44.
Nf6 {Weighted Error Value: White=0.07/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.19"]
[White "Wojtaszek, Radoslaw"]
[Black "Kuzubov, Yuriy"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2691"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,114,14,25,25,25,27,30,18,27,35,26,18,22,20,22,23,30,18,25,21,19,16,19,
16,16,14,15,10,62,59,58,76,54,60,84,27,77,46,72,68,64,64,64,64,64,64,64,64,64,
64,64,64,64,64,64,64,64,64,64,64,75,75,77,77,79,47,47,47,53,9,13,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-28000,-28000,-28000,-28000,
-28000]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Qc2 c5 6. cxd5 {D37:
Queen's Gambit Declined: 5 Bf4.} Nxd5 7. Nxd5 exd5 8. e3 {[#] White has an
edge.} Bd6 $146 ({Predecessor:} 8... Be7 9. Be2 O-O 10. O-O b6 11. b3 Bb7 12.
Bd3 h6 13. Bb2 Rc8 14. Qe2 Rc7 {0-1 (74) Lauber,A (2517)-Stern,R (2501)
Germany 2010}) 9. b3 O-O 10. Bd3 h6 11. Bb2 b6 12. O-O Bb7 13. Rfd1 Rc8 14.
dxc5 bxc5 15. Bh7+ Kh8 16. Bf5 Rc7 17. e4 d4 18. b4 {With the idea bxc5.} Qe7 (
18... Re8 $11) 19. bxc5 $1 $14 Nxc5 {[%cal Rb7e4]} ({But not} 19... Rxc5 $2 20.
Qd3 $18) 20. Qd2 Ne6 21. Nxd4 Rd8 {[#]} 22. Qe3 (22. Qe2 $1 $16) 22... Bf4 23.
Qf3 {Threatens to win with Nxe6.} (23. Qb3 {looks sharper.} Nc5 24. Qf3 Be5 25.
Nb5 Bxe4 26. Rxd8+ Qxd8 27. Rd1) 23... Nxd4 24. Rxd4 Rxd4 25. Qxf4 Qd6 26. Qxd6
$1 Rxd6 27. Be5 Rdc6 {[#] ( -> ...Rc1+)} 28. Bxc7 Rxc7 {[%mdl 4096] Endgame
KRB-KRB} 29. f3 g6 30. Bh3 Bc8 31. Bxc8 Rxc8 {KR-KR} 32. Rd1 Kg7 33. Rd2 Rc3
34. Kf2 g5 35. Kg3 Ra3 36. h4 Kg6 37. hxg5 hxg5 38. Kg4 f6 39. g3 Kf7 40. f4
gxf4 41. gxf4 {And now Kf5 would win.} Ke6 42. Rc2 f5+ 43. exf5+ Kf6 44. Rg2
Ra4 45. Rc2 Ra3 46. Rc6+ Kf7 47. f6 Kg6 48. f5+ Kf7 49. Kg5 (49. Rc1 {keeps
more tension.} Kxf6 50. Rc2 Ra4+ 51. Kf3 Kxf5) 49... Rg3+ 50. Kf4 Ra3 51. Kg5
Rg3+ 52. Kf4 Ra3 53. Rc2 (53. Ke5 {with more complications.} Ra5+ 54. Ke4 Ra3
55. Kd5 a5 56. Ke5) 53... Kxf6 54. Ke4 Ra4+ 55. Kd5 $2 {[%mdl 8192]} (55. Kd3
$11) 55... Kxf5 56. Rf2+ Kg5 57. Kc5 a6 {[%mdl 32768] Weighted Error Value:
White=0.04/Black=0.05. An unexpected result.} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.20"]
[White "Kryvoruchko, Yuriy"]
[Black "Jobava, Baadur"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2686"]
[BlackElo "2582"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,63,8,6,18,18,18,12,10,12,18,17,14,16,41,41,35,43,149,138,130,137,222,
197,222,228,199,217,386,384,383,375,354,372,267,172,456,454,502,515,499,491,
953,900,886,612,1976,1580,1244,1223]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6
5. Nc3 Nc6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Rb8 {B45: Sicilian Four
Knights.} 10. a3 Qb6 11. c4 Ne3 {The position is equal.} 12. Qd3 {[%cal Rd3e3]}
Nxf1 13. Rxf1 {[#]} c5 $146 ({Predecessor:} 13... Qb3 14. Nc3 c5 15. f5 Bb7 16.
Bg5 Bxg2 17. fxe6 fxe6 18. Rd1 Bc6 19. Rf2 Qb7 {1-0 (52) Fier,A (2560)
-Pridorozhni,A (2597) Chess.com INT 2020}) 14. Bd2 d5 15. exd6 {Strongly
threatening Bc3.} f5 16. Ng5 $36 {[%mdl 2048] White has some pressure.} h6 {
[#] White now steadily converts the win.} (16... Bxd6 $14 17. Bc3 h6) 17. Qh3
$1 $16 {Black must now prevent Qh5+.} Rg8 {[#]} (17... Qxb2 $2 18. Qh5+ Kd7 19.
Qf7+ Kxd6 20. Rd1 $18) 18. Bc3 $1 Qb3 {[#]} (18... hxg5 $2 19. Qh5+ (19. Qh7
Kf7 $11) 19... Kd7 20. O-O-O $18) (18... Rb7 $16 {might work better.}) (18...
Rb7 19. Nf3) 19. Rd1 $1 Qxc4 {[#]} ({Don't blunder} 19... hxg5 $2 20. Qh7 $18)
20. Rf2 $1 {Nf3 is the strong threat.} Rb6 {[#]} ({Not} 20... hxg5 $2 21. Qh5+
g6 22. Qh7 $18) 21. Be5 $1 Kd7 $2 ({Don't go for} 21... hxg5 $2 22. Qh5+ g6 23.
Qh7 $18) (21... Bd7) (21... Bd7 22. Qh5+) 22. Nf7 $18 Ba6 23. Qe3 Qe4 24. Qxe4
fxe4 25. Rc2 Rc6 {[#]} (25... Rb7 {was necessary.} 26. Rxc5 Ke8) 26. b4 $1 {
[%cal Bb2b4,Bb4c5,Bc5c6,Bc6c7][%mdl 32] White is clearly winning.} Bd3 27. Rxc5
Rxc5 28. bxc5 Ke8 {[#]} (28... h5 $142 29. c6+ {[%mdl 64] Decoy, Promotion}
Kxc6 30. Rc1+ Kd5) 29. c6 $1 Kxf7 (29... Bxd6 30. Nxd6+) 30. d7 Bxa3 {[#]
aiming for ...Bb4+.} 31. Rxd3 $1 {[%mdl 576] Promotion} exd3 (31... Bb4+ 32.
Kd1) 32. c7 {Weighted Error Value: White=0.04/Black=0.43} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.21"]
[White "Sadhwani, Raunak"]
[Black "Predke, Alexandr"]
[Result "0-1"]
[ECO "C88"]
[WhiteElo "2609"]
[BlackElo "2666"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,80,-3,1,10,-4,-14,-9,-13,-1,-45,-50,115,43,35,33,25,0,0,0,0,0,0,0,0,
0,22,26,19,25,21,0,0,0,51,46,42,0,0,0,0,-204,-220,-233,-229,-195,-206,-681,
-684,-542,-545,-866,-786,-1716,-1650,-2533,-2441,-2071,-4299,-5122,-4212,-5122,
-5069,-2580,-1351]} 1. e4 {Wells,P} e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O
Be7 6. Re1 b5 7. Bb3 Bb7 8. d4 Nxd4 9. Nxd4 exd4 10. e5 Ne4 {C88: Closed Ruy
Lopez: Anti-Marshall Systems.} 11. Qf3 {[%csl Gb3][%cal Rf3f7]} (11. Qg4 {
is more complex.} Ng5 12. Bxg5 Bxg5 13. Qxd4 O-O 14. c4) 11... O-O {Black
wants to play ...d5.} 12. Rxe4 c5 $1 {[%cal Rc5c4] Threatens to win with ...c4.
The position is equal.} 13. c4 f5 $1 {[%mdl 64] ...Kh8 is the strong threat.
Pin} 14. exf6 $1 {[#]} Rxf6 $146 (14... Bxf6 $15 {stays ahead.} 15. Nd2 (15.
cxb5+ Kh8 $15) 15... Kh8) ({Predecessor:} 14... Bxf6 15. Nd2 Kh8 16. Bc2 bxc4
17. Nxc4 d5 18. Re2 dxc4 19. Qxb7 d3 20. Qe4 Re8 21. Qxc4 dxe2 22. Be3 Rxe3 {
0-1 (22) Stefansson,H (2598)-Hector,J (2513) Malmo 2002 CBM 090 [Wells,P]}) 15.
Qe2 (15. cxb5+ $16 Kh8 16. Qe2 Bxe4 17. Qxe4) 15... Bxe4 $14 16. Qxe4 d5 $1 {
[%cal Rd5e4]} 17. cxd5 {Hoping for d6+.} c4 18. Bd1 Qf8 $1 {aiming for ...Re8.}
19. Bg4 {Black must now prevent Nd2.} ({Don't blunder} 19. Qxd4 $2 Bc5 $19)
19... Rxf2 {[%csl Gf8][%cal Rf2f1]} 20. Bf3 $36 {[%mdl 2048] White has the
initiative.} Rxf3 21. Qxf3 Qxf3 (21... Bc5 {keeps more tension.} 22. Kf1 Re8
23. Qxf8+ Rxf8+ 24. Ke1 d3) 22. gxf3 Rd8 23. Nd2 Rxd5 24. Ne4 b4 25. Kf2 Kf7 ({
Better is} 25... c3 $11) 26. Bf4 g5 27. Bc7 c3 28. Bb6 Bf8 29. Rd1 $2 (29. Ke1
$11) 29... c2 $19 30. Rc1 d3 31. Be3 {[#]} Bg7 $1 32. Nxg5+ $2 {[#]} (32. b3
Kg6 33. Bd2) 32... Rxg5 $1 {[%mdl 512] Black is clearly winning.} 33. Bxg5 {
Strongly threatening Ke3.} Bxb2 34. h4 a5 {[%cal Ba6a5,Ba5a4,Ba4a3][%mdl 32]}
35. Re1 Bd4+ 36. Kf1 Bf6 37. Bc1 Bc3 38. Re2 a4 39. Rxc2 dxc2 40. Ke2 a3 {
Weighted Error Value: White=0.99/Black=0.12} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.22"]
[White "Grandelius, Nils"]
[Black "Keymer, Vincent"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2662"]
[BlackElo "2630"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,119,3,3,-8,0,9,16,0,0,0,0,-8,0,0,13,4,41,4,6,0,-13,-10,0,-5,12,18,30,
32,19,25,23,25,107,98,89,98,100,109,100,97,131,134,131,91,113,104,116,110,134,
136,143,113,116,102,104,94,122,125,123,127,213,208,191,148,188,188,188,188,256,
189,275,255,253,254,251,273,270,272,249,254,263,265,260,254,229,190,189,107,
440,437,457,446,432,406,395,400,457,454,516,547,573,573,879,875,1010,1001,1301,
1297,1228,1215,1940,1732]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Be4 5. f3 Bg6 6.
e6 {B12: Caro-Kann: Advance Variation.} Qd6 7. exf7+ $1 Bxf7 8. Nc3 $5 {
[%mdl 4] The position is equal. An interesting side line.} Nd7 9. f4 e6 10. Nf3
{[#]} Qc7 $146 ({Predecessor:} 10... h5 11. g5 g6 12. h4 Ne7 13. Bd2 Bg7 14.
Bd3 O-O 15. a3 a6 16. Ne2 b5 {1/2-1/2 (25) Smirnov,V-Mokhov,A (1903) Omsk 2012}
) 11. Bd3 Bd6 12. Ng5 h5 13. Bd2 Nf8 14. Rf1 hxg4 15. Qxg4 Bh5 16. Qg2 Ne7 17.
Ne2 Qd7 18. Ng3 Bg6 19. Bxg6+ Nexg6 20. O-O-O {aiming for f5.} O-O-O {[#]} (
20... Nh4 $11 21. Qe2 O-O-O) 21. f5 $1 $16 {[%cal Rf5g6]} Nh4 22. Qh3 {[%cal
Rf5e6]} e5 23. dxe5 Bxe5 24. Ne6 Nxf5 25. Qxh8 Nxe6 26. Qh3 Nxg3 27. hxg3 Nc5
28. Qxd7+ Rxd7 29. Be3 b6 30. g4 Ne4 31. Rf5 Re7 32. Rdf1 Kd7 33. Rf7 Bf6 34.
Rxe7+ Bxe7 {[%mdl 4096] Endgame KRB-KBN} (34... Kxe7 $16 {keeps fighting.} 35.
c3 c5) 35. Rf7 $18 g5 36. Kd1 c5 37. Ke2 b5 38. Rg7 b4 (38... a5 $142 39. b3 b4
) 39. Rg8 a5 (39... Bf6 {was necessary.} 40. a4 Bxb2) 40. Ra8 Bd8 41. Ra6 d4
42. Bg1 Nf6 43. Kf3 Nd5 44. Ke4 Nf6+ 45. Kf5 Nd5 46. Ke5 Nb6 47. b3 {[%cal
Bb2b3,Bb3a4][%mdl 32]} Kc6 48. Ke4 (48. Ke6 $18) 48... a4 $2 {[%mdl 8192] A
mistake that costs the game.} (48... Kb7 $16 {is a better chance.} 49. Rxa5 Nd7
) 49. bxa4 {[#] Hoping for a5.} Kb7 50. Ra5 Nd7 51. Rb5+ Kc6 52. Kf5 Nb6 53.
Ra5 {White is clearly winning.} Nc4 54. Ra8 Bc7 55. Kxg5 Na3 56. Kf5 Nxc2 57.
Ke4 c4 58. Bxd4 c3 59. Be3 Kb7 60. Rf8 {Weighted Error Value: White=0.08/
Black=0.26} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.23"]
[White "Ponkratov, Pavel"]
[Black "Onyshchuk, Volodymyr"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2659"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,69,25,62,43,43,50,51,45,58,41,87,77,103,122,126,114,136,118,143,137,
166,155,149,156,160,47,42,37,50,56,39,-14,-22,-58,-23,-20,-19,-16,-18,-25,-18,
-20,106,104,116,78,170,142,152,168,276,194,181,179,1009,1103,29961,29956,29985,
29985,3203,2505]} 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. h4 h6 6. a4 {
B06: Modern Defence.} Nf6 7. f3 {[#]} h5 $146 ({Predecessor:} 7... Nc6 8. Bc4
e6 9. Bb3 d5 10. e5 Nd7 11. h5 g5 12. f4 gxf4 13. Bxf4 Na5 {0-1 (44) Gashev,M 
(2031)-Gubajdullin,A (2340) Tuapse 2021}) 8. Qd2 {White is slightly better.}
Nc6 9. Bc4 Nb4 10. Bb3 a5 11. Nge2 d5 12. e5 Ng8 13. Nf4 c6 14. Nce2 Nh6 15. e6
Bxe6 16. Nxe6 fxe6 17. Nf4 (17. c3 $16) 17... Qd6 $1 $14 18. c3 Nf5 19. cxb4
Bh6 {[#]} 20. g3 ({White should try} 20. Nxd5 $1 $14 cxd5 21. Bxh6 Rxh6 22.
bxa5) 20... e5 $1 $11 {[%cal Re5d4]} 21. Ng2 {dxe5 is the strong threat.} ({
Don't blunder} 21. dxe5 $2 Qxe5 22. Qc3 Qxe3+ 23. Qxe3 Nxe3 $19) 21... Nxe3 22.
Nxe3 exd4 23. Qxd4 Qxg3+ {[%mdl 64] Double Attack} 24. Ke2 $1 O-O 25. Raf1 e5 {
[#]} (25... Rf6 $11 26. f4 Re6) 26. Qd3 $1 $16 {Threatens to win with Rhg1.} e4
({But not} 26... axb4 $2 27. Rhg1 $18) 27. fxe4 Bxe3 (27... Rae8 $16 {was
worth a try.} 28. Rxf8+ (28. bxa5 $2 Bxe3 29. Kd1 Qg4+ 30. Kc2 Rxf1 $19) 28...
Bxf8) 28. Qxe3 $18 Qg2+ 29. Ke1 {Black must now prevent Rfg1.} Rxf1+ 30. Rxf1 {
Hoping for exd5.} Re8 31. Rf3 {aiming for Qf4.} axb4 $2 {[#]} (31... Qxb2 32.
Qf4 Qb1+ 33. Kd2 Qxe4) 32. Qf4 $1 {[%cal Rf4f7] Threatening mate with Qf7+!}
Ra8 33. Rg3 Qh1+ 34. Kd2 Qh2+ 35. Kd3 {Weighted Error Value: White=0.11/
Black=0.51} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.24"]
[White "Ponomariov, Ruslan"]
[Black "Howell, David W L"]
[Result "0-1"]
[ECO "C65"]
[WhiteElo "2631"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "152"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,152,18,20,16,18,16,29,8,10,8,27,14,20,17,30,29,33,14,11,19,15,6,13,8,
1,0,6,6,10,0,0,0,0,0,16,0,0,-15,0,-14,-21,-20,-18,-23,-17,-26,-1,-22,0,-27,-20,
-36,-18,-29,-13,-13,-20,-20,-19,-59,-39,-53,-45,-52,-29,-46,-27,-64,-47,-53,
-57,-106,-99,-188,-187,-276,-258,-260,-270,-246,-283,-296,-296,-307,-321,-319,
-310,-305,-323,-321,-323,-314,-324,-324,-327,-320,-317,-318,-319,-319,-322,
-289,-306,-297,-289,-368,-327,-392,-394,-385,-343,-376,0,-339,0,-367,-372,-507,
-499,-508,-501,-671,-635,-791,-1470,-1472,-1262,-1337,-1267,-1151,-985,-2924,
-2600,-2101,-1828,-2153,-1334,-2439,-2086,-4133,-5730,-4845,-4845,-29972,
-29975]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6. O-O {C65:
Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5.} Nd7 7. c3 {
is currently scoring better than 7.Nbd2.} h6 8. d4 {White has an edge.} Bd6 9.
Nbd2 O-O 10. Nc4 {[%cal Rd4e5]} exd4 11. Nxd4 Nc5 {[#]} 12. f3 $146 ({
Predecessor:} 12. e5 Be7 13. f4 f5 14. Be3 Qd5 15. Qe2 Ne4 16. Nd2 Nxd2 17.
Bxd2 c5 18. Nf3 {0-1 (48) Fier,A (2560)-Salgado Lopez,I (2584) chess24.com INT
2020}) 12... Re8 13. Be3 Bf8 14. Qc2 a5 15. Rad1 Qe7 16. Bf2 f6 17. b3 Qf7 18.
Rfe1 a4 19. Bg3 Ne6 20. Nf5 Nc5 21. Nd4 Ne6 22. Nf5 g6 {And now ...axb3 would
win.} 23. Nfe3 h5 24. Nb2 Nc5 {[%cal Ra4b3]} 25. b4 {[#]} a3 $1 26. Nbc4 Na4
27. Nxa3 Nb6 28. Qb2 Na4 29. Qc2 Be6 30. Rd2 Nb6 {[%mdl 1024] Black has
compensation.} 31. Qb2 Ra4 32. Red1 Bh6 33. Bf2 Qe7 34. Rd4 Rea8 35. Nec2 Nd7
36. c4 c5 37. bxc5 Nxc5 38. Qc3 Bf8 39. R4d2 b6 40. Qe3 {Black converts the
advantage convincingly.} Kh7 41. Bg3 (41. Qc3 $17) 41... Bh6 $19 {[%mdl 64]
Skewer} 42. Bf4 {[#]} (42. f4 {keeps fighting.}) 42... Rxa3 $1 {[%mdl 512]} 43.
Nxa3 Bxf4 {[%mdl 64] Overworked Piece} 44. Qxf4 {Hoping for Nb5.} Rxa3 45. h4
Bf7 (45... Bxc4 46. e5 $17) 46. Kh1 Kg7 ({Weaker is} 46... Bxc4 47. e5 $17) 47.
Rc2 Nd3 48. Qd2 Qd6 49. Rb1 {White hopes to continue with Rb3.} Qg3 50. Rb3
Qxh4+ 51. Kg1 Rxb3 52. axb3 Nc5 53. b4 Ne6 54. c5 bxc5 55. bxc5 Qg3 56. Qf2 Qe5
57. c6 Nd4 58. Rd2 Nxc6 59. Rd7 Nb8 60. Rd8 Nc6 61. Rd7 Nb8 62. Rd8 $1 c5 63.
Rc8 Nd7 64. Qd2 Nb6 65. Rc6 Nc4 66. Qd8 Qd4+ 67. Qxd4 cxd4 68. Kf2 d3 69. Rc8
h4 70. Rd8 d2 71. Ke2 g5 72. Rc8 Kg6 73. Rd8 Be6 74. Kf2 Kf7 75. Ke2 Ke7 76.
Rd4 {[#]} Bd7 $1 {Weighted Error Value: White=0.13/Black=0.11} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.25"]
[White "Oparin, Grigoriy"]
[Black "Kollars, Dmitrij"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2654"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,103,4,14,14,0,4,12,8,0,0,0,0,0,0,0,19,0,0,0,0,0,10,8,34,34,41,32,57,
55,56,66,66,69,70,55,124,63,66,57,107,109,136,97,85,99,105,105,105,105,105,105,
105,83,229,220,258,240,573,568,546,554,618,578,669,668,642,597,707,647,808,808,
808,808,975,949,884,785,801,801,801,801,801,780,747,650,1829,1750,29968,29970,
29969,29971,6095,5051]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Bc5 6.
O-O b5 7. Bb3 O-O {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6, unusual lines.} 8. a4 $5 {
[%mdl 4] Exploring less charted territory.} Rb8 9. axb5 axb5 {[#] The position
is equal.} 10. Nd5 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 10.
d3 d6 11. Nd5 Nxd5 12. Bxd5 Ne7 13. Bb3 Ng6 14. c3 h6 15. Be3 {1/2-1/2 (15)
Smirin,I (2663)-Avrukh,B (2572) Acre 2013}) 10... Nxe4 11. d3 Nf6 12. Bg5 $1
Be7 13. Nxe7+ Qxe7 14. Re1 d6 15. d4 h6 16. Bh4 Bg4 17. c3 g5 18. Bg3 e4 {
[#] Strongly threatening ...Qd8.} 19. Qd2 $1 {Nxg5! is the strong threat.} Nh5
{[#]} (19... b4 20. Ba4) 20. Bd5 $1 {[%mdl 64] Double Attack} Bxf3 21. Bxc6 Rb6
22. Ba8 $1 Nxg3 23. hxg3 ({Much worse is} 23. gxf3 Nh5 $15) 23... Bh5 (23...
Bg4 $14) 24. Bxe4 (24. Rxe4 $16 Qf6 25. d5) 24... Qf6 $14 25. b4 Rd8 26. Ra7 c5
27. Bd5 cxb4 28. cxb4 Rbb8 29. g4 Bg6 30. Re3 Rf8 31. Rf3 Qg7 32. Ra6 $36 {
[%mdl 2048] Keeping Black busy.} Rbc8 {This costs Black the game.} (32... Rfd8
$16 33. Rc3 Qf6) 33. Rxd6 $18 Rcd8 34. Rff6 {Threatens to win with Rxg6.} Qxf6
(34... Rxd6 {is tougher.} 35. Rxd6 Rc8) 35. Rxf6 Rxd5 36. f3 Rc8 37. Rb6 Kh7
38. Qe3 Rcd8 39. Qe7 Rxd4 40. Rxb5 Rc8 41. Qe5 Rdd8 42. Rd5 Re8 43. Qd4 Rb8 44.
Kh2 Rb7 45. b5 Reb8 46. Qc4 Rb6 47. Kh3 R6b7 48. Rc5 Rd7 49. Rc8 Bd3 50. Qc6
Rdb7 51. Rxb8 Rxb8 52. Qd6 {[%mdl 64] Double Attack.  Weighted Error Value:
White=0.04/Black=0.45} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.26"]
[White "Alekseenko, Kirill"]
[Black "Kravtsiv, Martyn"]
[Result "1-0"]
[ECO "C84"]
[WhiteElo "2710"]
[BlackElo "2625"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,85,20,21,27,10,16,20,19,31,34,26,39,19,6,9,26,2,0,9,12,0,0,-15,17,15,
30,30,31,31,19,14,50,49,75,72,72,72,119,111,123,97,144,97,97,81,322,330,323,
326,325,262,372,272,414,299,282,301,283,243,283,297,392,339,633,627,627,603,
873,811]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. a4 b4
8. a5 O-O 9. O-O d6 10. Nbd2 Rb8 {C84: Closed Ruy Lopez: Unusual White 6th
moves.} 11. c3 Be6 12. Nc4 bxc3 {The position is equal. has lost popularity 
(12...h6).} 13. bxc3 h6 14. Re1 Qc8 15. h3 $5 {[%mdl 4] Exploring less charted
territory.} Rd8 16. Bc2 Bf8 17. Qe2 {[#]} Bxc4 $146 ({Predecessor:} 17... Ne7
18. d4 exd4 19. Nxd4 Bxc4 20. Qxc4 c5 21. Nf3 Ng6 22. Bd3 Rb5 23. Qa2 Rb8 {
0-1 (47) Najer,E (2653)-Karjakin,S (2771) Dubai 2014}) 18. dxc4 Nd7 19. Nh2 Nc5
20. Ra3 Nb7 21. Ng4 Ncxa5 22. c5 Nc6 23. Rxa6 Ne7 24. Ba3 Ra8 (24... Ng6 {
seems wilder.} 25. Bb3 Nxc5 26. Bxf7+ Kxf7 27. Bxc5 Qe6) 25. cxd6 cxd6 26. Rxa8
Qxa8 27. Bb4 $36 {[%mdl 2048] Black is under strong pressure.} Ng6 28. g3 Qc8
29. h4 Nc5 30. Ra1 Ne7 31. Qf3 Nc6 $2 {Loses the game.} (31... Qc7 $16) 32.
Bxc5 $18 dxc5 33. Bb3 Qc7 34. h5 Re8 (34... c4 $142 35. Bxc4 Nd4 36. cxd4 Qxc4
37. Nxe5 Qe6) 35. Ra6 {[#] aiming for Rxc6!} Nd8 (35... c4 {might work better.}
36. Ba4 (36. Bxc4 Nd4 $16) 36... Re6 37. Bxc6 Rxc6 38. Rxc6 Qxc6) 36. Bd5 Ne6
37. Qf5 Bd6 38. Rc6 Qb8 39. Kg2 Re7 40. Ne3 {[#] Strongly threatening Qg4.} Qd8
$2 (40... Re8 41. Nc4 Bc7 42. Bxe6 fxe6 43. Rxe6 Qc8) 41. Qg4 {White is
clearly winning.} Rc7 {Black hopes to continue with ...Rxc6.} 42. Ra6 Bf8 43.
Rxe6 {Weighted Error Value: White=0.15/Black=0.43} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.27"]
[White "Demchenko, Anton"]
[Black "Movsesian, Sergei"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2651"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,119,25,37,30,41,19,36,45,51,4,4,-11,0,-33,-21,-19,37,43,37,37,44,35,
50,55,85,31,27,39,32,32,58,45,45,48,57,0,0,0,0,0,0,0,0,0,54,-121,-27,-30,-17,
-18,0,-5,0,0,31,20,35,39,89,12,12,11,8,10,20,8,10,7,36,36,36,36,36,36,36,36,36,
36,68,94,99,83,169,36,37,28,29,33,29,36,141,117,125,131,138,38,44,80,134,134,
402,395,793,820,1356,1250,1338,1368,1182,1004]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4
4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qf3 {B48: Sicilian: Taimanov: 5 Nc3 Qc7 6
Be3 a6 without Be2.} Nf6 8. O-O-O h5 9. Nxc6 {White is slightly better.} dxc6
10. e5 $5 {[%mdl 4] Exploring less charted territory.} Qxe5 {[#]} 11. Bc4 $146
({Predecessor:} 11. Bf4 Qa5 12. Bc4 Bb4 13. Qg3 Bxc3 14. bxc3 O-O 15. Bd6 Re8
16. f3 e5 17. Rhe1 Qxc3 {0-1 (32) Lu,J (2024)-Grunberg,M (2401) Chess.com INT
2020}) 11... Nd5 12. Rhe1 {[%cal Rc4d5]} (12. Bd4 $5 {[%cal Rd4e5]} Qg5+ 13.
Kb1 $11) 12... Nxe3 (12... Nxc3 13. Rd8+ $1 Ke7 14. bxc3 $16) 13. Rxe3 Qf6 (
13... Qc7 $11) 14. Qg3 $1 $14 {[%mdl 1024] aiming for Ne4. White has
compensation.} h4 $1 {[%cal Rh4g3]} 15. Qc7 $36 {[%mdl 2048] White is pushing.}
Qe7 $1 {[%cal Re7c7]} 16. Qb6 {And now Ne4 would win.} g6 $1 {White must now
prevent ...Bh6.} 17. Qd4 Rh7 18. Red3 (18. f4 $16) 18... e5 $1 {[%cal Re5d4]}
19. Qb6 {Rd8+ would kill now.} Bf5 {[#]} 20. Bxa6 Bxd3 21. Bxb7 {[%mdl 64]
Double Attack} Bh6+ $1 22. Kb1 Rd8 {Strongly threatening ...Bb5!} 23. Bxc6+ (
23. Qxc6+ $14 Kf8 24. Rxd3) 23... Kf8 $11 24. cxd3 Kg7 25. Qb7 Qc5 26. Ne4 Qd4
27. Qe7 Kh8 (27... Rb8 $11 28. b3 Kh8) 28. Ng5 $2 (28. Qf6+ $14 Kg8 29. Ba4 (
29. Qxh4 Kf8 $11)) 28... Rb8 (28... Qd6 $1 $17 {[%cal Rd6e7]} 29. Qxd6 Rxd6 30.
Nxh7 Rxc6) 29. b3 Bxg5 30. Qxg5 Kg7 31. Qe3 $1 Qd6 32. d4 Rh5 33. Bf3 Rf5 34.
dxe5 Qe7 35. e6 (35. Rd5 $16) 35... Qxe6 36. Qxe6 fxe6 {[%mdl 4096] Endgame
KRR-KRB} 37. h3 Kf6 38. Kb2 Rf4 39. Rd2 Rb6 40. Re2 Rd4 41. Be4 e5 42. Kc3 g5
43. f3 Rb8 44. Bd3 Rbd8 45. Bc4 Rd1 46. a4 Ra1 (46... Ra8 $16 {was called for.}
) 47. Bd3 ({Only move:} 47. Kb2 $1 $18 {[%cal Rb2a1]} Rad1 48. a5) 47... Rd1
$14 48. Bc2 Rc8+ 49. Kb2 Rd4 50. Be4 Rb8 (50... Ke6 $14) 51. Ka3 $1 $16 Ke6 {
[#]} 52. Rc2 $1 Rd1 {[#]} 53. Ra2 (53. Rc6+ $1 $16 Kd7 54. Rg6) 53... Rd4 54.
Rb2 Rd1 ({Better is} 54... Kd6) 55. b4 Rbd8 $2 {[%mdl 8192] This move loses
the game for Black.} (55... Ra1+ $16 56. Kb3 Rd8) 56. a5 {[%cal Ba4a5,Ba5a6]
[%mdl 32]} R8d4 $2 (56... Kd6 57. a6 Rd7) 57. Ra2 $18 {White is clearly
winning.} Rd7 58. a6 Kd6 59. Ka4 Ra7 60. Ka5 {Weighted Error Value: White=0.19/
Black=0.22} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.28"]
[White "Abdusattorov, Nodirbek"]
[Black "Indjic, Aleksandar"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2646"]
[BlackElo "2612"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,67,2,0,2,0,4,4,4,4,5,4,8,10,15,6,0,0,0,0,0,0,0,0,0,0,5,0,12,13,23,20,
18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-11,0,0,0,-7]} 1. e4 e5 2. Nf3 Nf6 3. d4
Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nc3 Nxc3 7. bxc3 Bd6 {now supersedes 7...Nxe5.}
8. O-O O-O 9. Re1 c5 {C43: Petroff Defence: 3 d4.} 10. Nxd7 Qxd7 11. dxc5 Bxc5
12. Qh5 {[%csl Gd3][%cal Rh5h7] [#]} h6 13. Be3 Qc6 14. Bxc5 Qxc5 15. Re3 Qd6
16. Qh4 Bd7 17. Qd4 Rfe8 {[#]} 18. c4 $146 ({Predecessor:} 18. Rxe8+ Bxe8 19.
c4 Bc6 20. Be4 Qb4 21. Bxd5 Bxd5 22. Qxd5 Rc8 23. a3 Qc3 24. Rb1 b6 25. Qd7
Qxc4 26. Qxa7 Qxc2 {1/2-1/2 (40) Sevian,S (2654)-Dominguez Perez,L (2760)
Saint Louis 2021}) 18... Bc6 19. c5 Qc7 20. Rae1 Rxe3 21. Rxe3 Kf8 22. h3 Rd8
23. Be2 Rd7 {The position is equal.} 24. Rg3 f6 25. Qd3 {[#] Qh7 is the strong
threat.} Kg8 26. Qg6 Re7 27. Bd3 {Threatening mate with Qh7+.} Re1+ 28. Kh2 {
aiming for Qh7+.} Kf8 29. Qh7 Qf7 $1 30. Rg4 Qc7+ 31. Rg3 {Strongly
threatening Qh8+.} Qf7 $1 32. Rg4 Qc7+ 33. Rg3 {Hoping for Qh8+.} Qf7 $1 34.
Rg4 {A rather calm draw.  Weighted Error Value: White=0.01/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.29"]
[White "Saric, Ivan"]
[Black "Ter-Sahakyan, Samvel"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2644"]
[BlackElo "2607"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,84,11,10,9,19,22,6,34,23,23,29,44,28,43,35,33,52,53,-39,-33,-29,12,7,
9,14,21,0,0,-14,-20,-14,-14,-139,-192,-168,-176,-239,-221,-315,-311,-333,-322,
-212,-293,-323,-196,-441,-440,-409,-322,-588,-584,-557,-584,-574,-553,-2102,
-1960,-29995,-29996,-29996,-29997,-29997,-29997,-29997,-693]} 1. e4 c5 2. Nf3
d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 h5
10. Nd5 Nxd5 11. exd5 Bf5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6
Be3 Ng4 and 6 Be3 e5.} 12. Be2 a5 {12...Nd7 is vanishing.} 13. a4 O-O {The
position is equal.} 14. O-O Nd7 15. f4 exf4 16. Bxf4 Rc8 $1 {[%mdl 4] is now
more promising than 16...Bg6.} 17. c3 Nf6 18. Be3 {[#]} Bg6 $146 ({Predecessor:
} 18... Be4 19. Bd4 Nxd5 20. Bf3 Bg5 21. Qe2 Bxf3 22. Qxf3 Nf6 23. Qf5 Ng4 24.
Qxa5 Re8 25. Qxd8 Bxd8 {1-0 (39) Giri,A (2764)-Grandelius,N (2663) Wijk aan
Zee 2021}) 19. c4 (19. Bb5 $14) 19... Re8 $15 20. Bd4 (20. Qxa5 $2 Qxa5 21.
Nxa5 Bd8 $19) 20... b6 21. Bd3 Bxd3 22. Qxd3 Nd7 23. Bxg7 Kxg7 24. Nd4 {
Intending Rxf7+! and mate.} Bf6 {...Bxd4+ is the strong threat.} 25. Nf5+ Kf8
$1 {White must now prevent ...Ne5.} 26. Qh3 {Black continues to play with
concentration.} (26. Nh6 $1 $11 Kg7 27. Nf5+ Kf8 28. Nh6) 26... Rxc4 $17 {
Strongly threatening ...Rc2.} 27. Qxh5 Re5 28. Qh6+ (28. Qh7 $142 Rg4 29. Kh1)
28... Kg8 $19 29. Ra3 {[#]} (29. h3 $142 Qf8 30. Qd2) 29... Rg4 $1 30. Rh3 {
[#] intending Qh7+.} Rg6 $1 {[%cal Rg6h6]} (30... Nf8 31. Qh5 $15) 31. Qh7+ Kf8
32. Rhf3 ({Not} 32. Nxd6 $2 Qe7 $19) 32... Qe8 33. Nh4 $2 (33. Nxd6 Qe7 34.
Rxf6 {[%mdl 64] Remove Defender} Nxf6 35. Qh8+ Ng8 36. Qxe5 (36. Rxf7+ $2 Qxf7
37. Nxf7 Rxd5 $19) 36... Qxd6 37. Qxd6+ Rxd6 38. Rd1) 33... Rg4 {[%mdl 64]
Double Attack} 34. Nf5 Re1 35. Nxd6 $2 (35. Qh6+ Kg8 36. b3) 35... Qe7 36. Nf5
Qc5+ 37. Kh1 Qc1 38. Kg1 Ne5 39. R3f2 Rxf1+ {Black mates.} 40. Rxf1 Nf3+ 41.
Kf2 Qd2+ 42. Kxf3 Qxg2+ {[%mdl 64] Double Attack.  Weighted Error Value:
White=0.72/Black=0.09} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.30"]
[White "Niemann, Hans Moke"]
[Black "Sindarov, Javokhir"]
[Result "1-0"]
[ECO "B36"]
[WhiteElo "2638"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,79,54,48,49,44,62,47,47,45,54,43,83,61,67,60,121,81,87,87,80,97,88,
87,93,79,95,97,87,79,152,150,152,160,172,171,229,232,430,441,689,670,593,339,
531,494,909,701,712,681,891,893,883,846,29990,29991,29991,29992,29993,29994]} 
1. Nf3 Nf6 2. c4 g6 3. Nc3 c5 4. e4 Nc6 5. d4 cxd4 6. Nxd4 d6 7. Be2 Nxd4 8.
Qxd4 Bg7 9. Be3 O-O 10. Qd3 Be6 {10...a5 deserves study.} 11. O-O Qa5 12. Bd4
Rfc8 {B36: Sicilian: Maroczy Bind: Gurgenidze System.} 13. b3 Nd7 14. Bxg7 Kxg7
{White is slightly better.} 15. f4 f6 {[#]} 16. Kh1 $146 ({Predecessor:} 16.
Nd5 Bxd5 17. exd5 a6 18. Bg4 f5 19. Rae1 Re8 20. Bxf5 gxf5 21. Qxf5 Nf6 22. g4
{0-1 (36) Miovecz,J (2141)-Feher,T (2185) Hungary 2007}) 16... Qb6 17. Rae1 a5
18. Qg3 Nc5 (18... Rg8 $14) 19. Bg4 Bxg4 20. Nd5 Qd8 {...Be6 is the strong
threat.} 21. Qxg4 e6 22. Nc3 Qe7 23. Qd1 a4 24. Nb5 axb3 25. axb3 {[%cal Ba2b3,
Bb3b4][%mdl 32]} Ra6 (25... Rc6 $142) 26. b4 $16 Nd7 {[#]} 27. Qd3 e5 {[#]
With the idea ...exf4.} 28. f5 Nb8 (28... Rcc6 $142 29. Rd1 Nf8) 29. Rd1 $18
Rb6 $2 (29... g5 30. Nxd6 Rd8) 30. Nc3 {[%cal Bb5c3,Bc3d5,Bd5e3,Be3f5][%mdl 32]
} Rbc6 (30... Rf8 $142 31. Nd5 Qd8 32. Nxb6 Qxb6 33. Qxd6 Qxd6 34. Rxd6 gxf5)
31. Nd5 Qe8 32. fxg6 Nd7 (32... hxg6 $142 33. Qg3 Nd7) 33. gxh7 Rxc4 (33... Qf7
$142 34. Ne3 Kh8) 34. Ne3 Rc3 35. Nf5+ {[%mdl 64] Double Attack} Kxh7 36. Qxd6
R8c7 37. Rf3 {White wants to mate with Qd2.} Rc1 38. Rh3+ {White mates.} Kg6
39. Qd2 Rxd1+ 40. Qxd1 {[%csl Gh3][%cal Rd1h5] Weighted Error Value: White=0.
16/Black=0.58} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.31"]
[White "Yilmaz, Mustafa"]
[Black "Dreev, Aleksey"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2626"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,77,14,8,11,18,14,14,0,10,15,30,21,22,15,34,2,29,33,38,25,62,61,84,95,
85,87,91,98,135,169,191,180,180,177,185,173,182,205,212,204,189,186,340,330,
316,273,364,355,737,529,533,503,772,756,708,705,923,893,864,817]} 1. d4 Nf6 2.
c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. cxd5 exd5 6. Bg5 c6 7. Qc2 Be7 8. e3 Nh5 9. Bxe7
Qxe7 10. O-O-O Nb6 11. Bd3 {seems to push 11.h3 aside. D36: Queen's Gambit
Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2).} Bg4 12. Kb1 (12.
Bxh7 g6 $17) 12... g6 13. h3 {The position is equal.} Bxf3 14. gxf3 {[#]} Qh4
$146 ({Predecessor:} 14... O-O-O 15. Qb3 Kb8 16. a4 Qe6 17. a5 Nc4 18. a6 b6
19. Na4 Rc8 20. Ka1 Ka8 {1-0 (50) Carlsen,M (2847)-Artemiev,V (2704) Chess24.
com INT 2021}) 15. f4 Nf6 16. Rc1 O-O 17. Rcg1 Kh8 18. Rg2 Rac8 19. Ne2 Nfd7
20. Qd1 c5 {[#] Black is now going downhill.} 21. Rg4 $1 {[%cal Rg4h4]} Qe7 22.
h4 Nf6 23. Rg5 Nc4 24. h5 cxd4 25. hxg6 fxg6 26. Nxd4 Ne4 27. Bxe4 ({Not} 27.
Rxd5 $2 Nxf2 28. Qe2 Nxh1 $19) 27... Nd2+ 28. Ka1 Nxe4 {[#]} 29. Rg2 ({Don't
go for} 29. Rxd5 $2 Nxf2 30. Qg1 Nxh1 $19) 29... Rf6 30. Nf3 Qc5 $2 (30... Rfc6
) 31. Ne5 $18 {aiming for Nxg6+.} Kg7 32. Nd7 {[%mdl 64] Double Attack} Qe7 33.
Nxf6 ({Less strong is} 33. Qxd5 Rd8 $14) 33... Qxf6 $2 (33... Nxf6 34. f5 Qe4)
34. f3 {White is clearly winning.} Nd6 35. Qxd5 Re8 (35... Rc7 $142 36. e4 Nf7)
36. Qh5 Rh8 37. Qh6+ Kf7 38. e4 Nc4 39. f5 {Weighted Error Value: White=0.11/
Black=0.21} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.32"]
[White "Ivic, Velimir"]
[Black "Zhou, Jianchao"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2606"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "137"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,136,25,27,17,30,19,33,7,0,5,9,8,7,0,0,0,6,0,0,0,36,61,35,47,139,144,
134,133,134,122,129,119,106,95,122,129,125,125,111,111,132,121,118,117,208,215,
227,245,243,236,199,200,168,20,25,12,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3
a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O Nbd7 11. g4 b5 12. g5
Nh5 $1 {[%mdl 4] is currently scoring better than 12...b4.} 13. Kb1 {B90:
Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Nb6 14. Na5
Rc8 15. Nd5 {White is slightly better.} Nxd5 16. exd5 Bxd5 17. Qxd5 {Hoping
for Nc6.} Qxa5 18. Bd3 $5 {[%mdl 4] A promising side line.} g6 {[#]} 19. Be4 $5
$146 {[%mdl 8] An interesting novelty.} ({Predecessor:} 19. c4 Nf4 20. Bxf4
exf4 21. h4 Rc5 22. Qe4 Re5 23. Qxf4 Rc8 24. h5 Bxg5 25. Qg4 {1-0 (31)
Grigoriants,S (2542)-Bok,B (2624) Chess.com INT 2020}) 19... Qd8 20. h4 Ng3 21.
Rh2 $1 Nxe4 22. fxe4 Qc7 23. h5 Qc4 (23... gxh5 $14 24. Rdh1 Qc4) 24. hxg6 $16
Qxd5 (24... hxg6 $2 25. Rdh1 $18) 25. gxh7+ Kh8 26. exd5 ({Much worse is} 26.
Rxd5 $6 Rc4 $14) 26... f5 {With the idea ...f4.} 27. gxf6 $1 Rxf6 28. Bg5 Rf7
29. Bxe7 Rxe7 {[%mdl 4096] Endgame KRR-KRR} 30. Rh6 Rd8 31. Rdh1 Rc7 32. c3 Rc5
33. Rd1 Rc7 (33... a5 $16) 34. Rg1 $1 $18 Rxh7 35. Rgg6 Rxh6 36. Rxh6+ {KR-KR}
Kg7 37. Re6 a5 38. Kc2 ({Only move:} 38. b3 $1 $18) 38... a4 $11 39. b3 axb3+
40. axb3 Kf7 41. Kb2 Rd7 42. Kc1 Rc7 43. Kc2 Rd7 44. Kb2 Rd8 45. Ka3 {Kb4 is
the strong threat.} (45. Kc1 {keeps more tension.} Kg8 46. Kd2 Kg7 47. Kd3 Rd7
48. c4) 45... Re8 $1 {[%cal Re8e6]} 46. Rxe8 Kxe8 {K3P-K3P} 47. Kb4 e4 {
Strongly threatening ...e3.} 48. c4 ({Wrong is} 48. Kxb5 $2 e3 $19) 48... Kd7 (
48... e3 $5 49. Kc3 $8 bxc4 50. bxc4 Ke7 $11) 49. Kc3 ({Don't go for} 49. Kxb5
$2 e3 50. c5 e2 51. c6+ Kc7 52. Kc4 e1=Q 53. Kd3 Qg3+ 54. Kc4 Qe3 55. b4 Qd2
56. b5 Kb6 57. c7 Kxc7 58. Kb3 Kb6 59. Kc4 Ka5 60. b6 Kxb6 61. Kb3 Kc5 62. Ka3
Kc4 63. Ka4 Qb4#) 49... Kc7 50. Kd4 bxc4 51. bxc4 Kd7 {Mate.} 52. Kxe4 {KPP-KP}
Ke8 53. Kf4 Kf8 $1 54. Kg4 Kg8 $1 55. Kh3 Kf7 56. Kg2 Kg8 57. Kh2 Kf8 58. Kh1 {
[#]} Kf7 $1 59. Kg1 {[#]} Kg7 $1 60. Kf2 Kf8 61. Ke3 Ke7 62. Kd4 Kd8 63. c5
dxc5+ 64. Kxc5 {KP-K} Kc7 65. d6+ Kd7 66. Kd5 Kd8 67. Kc6 Kc8 68. d7+ Kd8 69.
Kd6 {Never resign too early!  Weighted Error Value: White=0.20/Black=0.05}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.33"]
[White "Svidler, Peter"]
[Black "Praggnanandhaa R"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2694"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,28,30,27,37,45,18,14,11,0,4,0,36,0,0,8,47,29,60,63,71,71,73,69,85,
55,69,46,108,66,58,80,86,75,129,119,110,112,212,101,93,95,73,86,142,23,23,23,
23,23,17,9,14,5]} 1. e4 {Lupulescu,C} c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5.
d3 Qc7 6. O-O {B31: Sicilian: 2...Nc6 3 Bb5 g6.} e5 7. Be3 Nf6 8. Qe1 Bg4 9.
Nbd2 Nh5 10. a3 Be7 {[#]} 11. b4 $146 ({Predecessor:} 11. Qb1 Nf4 12. b4 Ne2+
13. Kh1 Nd4 14. Ng1 g5 15. bxc5 Bxc5 16. Bxg5 Rg8 17. Bh4 {1/2-1/2 (68)
Aronian,L (2752)-Carlsen,M (2875) Stavanger 2019 CBM 191 [Lupulescu,C]}) 11...
cxb4 12. axb4 O-O 13. Qb1 Nf4 14. Qb2 f6 15. Bxf4 exf4 16. Qb3+ Kh8 17. d4 g5
18. c4 b6 ({Black should try} 18... Be6 $14) 19. c5 Qd7 20. Qc3 Rfd8 21. Nb3
Kg8 (21... Be6 $142) 22. Rfe1 $16 bxc5 23. bxc5 Rab8 (23... Rac8 $16) 24. Nfd2
(24. d5 $1 $18 {[%cal Rd5d6]}) 24... Be6 25. h3 Bf7 26. Ra6 Qb7 {[#]} (26...
Rb7 $142) 27. Rea1 Qb4 $1 $11 {[%cal Rb4c3]} ({Avoid the trap} 27... Bxb3 $2
28. Rxa7 Qb4 29. Qxb3+ Qxb3 30. Nxb3 $18) 28. Qxb4 Rxb4 29. Na5 ({Much weaker
is} 29. Rxc6 Bxb3 30. Rxa7 Bf8 $17) 29... Rbxd4 30. Nxc6 {[%mdl 64] Double
Attack} Bxc5 31. Nxd4 {Weighted Error Value: White=0.18/Black=0.15} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.34"]
[White "Brkic, Ante"]
[Black "Van Foreest, Jorden"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2621"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,77,55,58,73,47,52,41,44,44,40,31,80,50,46,57,56,44,36,30,59,45,100,
89,85,83,87,84,147,148,147,139,136,137,154,126,132,129,131,137,143,145,164,102,
158,157,595,586,626,643,625,634,614,622,590,580,1038,1096]} 1. e4 c5 2. Nf3 d6
3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7
10. g4 h6 11. Bxf6 Bxf6 12. h4 Nb6 {is now more promising than 12...Qb6. B99:
Sicilian Najdorf: 6 Bg5 e6 7 f4 Be7 8 Qf3 Qc7 9 0-0-0 Nbd7.} 13. g5 Bxd4 14.
Rxd4 Qc5 {White is slightly better.} 15. Rd2 Bd7 16. Be2 {[#]} Rc8 $146 ({
Predecessor:} 16... Na4 17. Rd3 Rc8 18. Bd1 Nxc3 19. Rxc3 Qa5 20. gxh6 Rxh6 21.
Rxc8+ Bxc8 22. h5 Bd7 {1-0 (34) Raja,H (2459)-Perez Gormaz,M (2413) Banja
Vrujci 2021}) 17. gxh6 Rxh6 18. h5 Na4 19. Nxa4 Bxa4 20. c3 Bc6 21. Rhd1 Ba4 (
21... Kf8 $14) 22. b3 Bb5 23. c4 Bc6 24. Kb2 $1 Rd8 (24... b5 $142) 25. Qg3 $36
{[%mdl 2048] Keeping Black busy.} Bxe4 {[#]} 26. Rd4 $1 {[%cal Rd4e4]} Qf5 27.
Qxg7 Rh7 28. Qg1 {Threatens to win with Rxe4!} Qf6 29. Qg5 Qxg5 30. fxg5 d5 31.
cxd5 exd5 {[#]} 32. h6 (32. Bg4 $1 $18) 32... Ke7 {[#]} (32... f5 $142) 33. Bc4
$1 {[%mdl 512] Hoping for Re1.} Rhh8 $2 {[#] This costs Black the game.} (33...
Rd6 $16 {is more resistant.}) 34. Re1 $1 $18 {White is clearly winning.} f5 (
34... f6 35. Rxd5) 35. Rxd5 Rdf8 36. Re5+ Kd6 37. Re6+ Kc7 38. g6 {Black must
now prevent g7.} b5 {[#]} 39. g7 $1 {[%mdl 64] Double Attack.  Weighted Error
Value: White=0.05/Black=0.31} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.35"]
[White "Yakubboev, Nodirbek"]
[Black "Matlakov, Maxim"]
[Result "1/2-1/2"]
[ECO "D16"]
[WhiteElo "2621"]
[BlackElo "2682"]
[Annotator "TA"]
[PlyCount "21"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,21,16,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 {[#]} 6.
Nh4 $146 ({Predecessor:} 6. Ne5 Nbd7 7. Nxc4 Nb6 8. Ne5 a5 9. Rg1 Nfd7 10. e4
Bg6 11. Nxg6 hxg6 12. Bg5 Qc7 13. e5 e6 14. Bd3 Rxh2 15. Qg4 Be7 16. Bxe7 Kxe7
17. Qg5+ Kf8 18. Bxg6 {1/2-1/2 (27) Mamedyarov,S (2762)-Korobov,A (2685)
Struga 2021}) 6... Bc8 7. Nf3 Bf5 8. Nh4 Bc8 9. Nf3 Bf5 10. Nh4 {10.Ne5 is the
recent fashion.} Bc8 11. Nf3 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.36"]
[White "Henriquez Villagra, Cristobal"]
[Black "Mamedov, Rauf"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2608"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,101,0,6,0,0,0,0,0,0,0,12,-20,0,-16,-7,-12,-29,-42,-26,-37,-24,-45,
-48,-38,-25,-41,-10,-25,-9,-19,6,4,45,44,37,29,24,24,26,34,27,29,100,112,115,
114,109,65,396,500,462,466,434,264,192,162,314,314,279,264,307,162,125,84,143,
110,147,154,151,146,112,117,114,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3
Nc6 3. Bb5 g6 4. O-O Bg7 5. c3 Nf6 6. Re1 O-O 7. d4 d5 {is now debated instead
of 7...cxd4.} 8. e5 Ne4 9. Be3 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} cxd4 10. cxd4
Qb6 11. Qe2 Bd7 {[#]} 12. Ba4 $146 ({Predecessor:} 12. a4 a6 13. Bd3 Nb4 14. a5
Qd8 15. Bxe4 dxe4 16. Ng5 Rc8 17. Nc3 f6 18. Ngxe4 fxe5 19. dxe5 Bxe5 {1/2-1/2
(37) Sasikiran,K (2647)-Yakovich,Y (2526) Chess.com INT 2020}) 12... Rac8 13.
h3 Rfd8 14. Na3 Nb4 15. Bb3 a5 16. Nd2 a4 17. Nxe4 axb3 18. Nc3 bxa2 19. Nxa2
Nxa2 20. Rxa2 Qb3 21. Raa1 b5 22. Rec1 b4 23. Nb5 Rc4 24. Nc7 Bf5 25. Qd2 Rc8
26. Na6 Rxc1+ 27. Rxc1 Rxc1+ 28. Qxc1 Qa4 (28... h5 $11) 29. Nc7 $16 Qd7 30.
Qc5 e6 31. Qb6 {And now Qb8+ would win.} h5 $2 {[%mdl 8192] [#]} (31... Qd8 $14
) 32. Qb8+ $1 $18 Kh7 33. Ne8 {Nf6+ would kill now.} Qe7 34. Bf4 {Strongly
threatening Nf6+!} Qf8 35. Qd8 Bh6 $2 (35... Bc2 36. Qd7 Bh6 37. Bxh6 Kxh6) 36.
Bxh6 Kxh6 {[#]} 37. Nd6 $1 {[%mdl 512]} Kg7 (37... Qxd8 38. Nxf7+) 38. Qxf8+ (
38. Qb6 $142) 38... Kxf8 {[%mdl 4096] Endgame KB-KN} 39. h4 Bd3 (39... Ke7 $142
) 40. f3 $16 Ba6 41. Kf2 Ke7 42. Ke3 f6 43. Kf4 fxe5+ 44. Kxe5 ({White has to
play} 44. dxe5 $16 Kd7 45. g4) 44... Bf1 $1 $11 {The position is equal.} 45. g3
{Nb7 is the strong threat.} Ba6 46. b3 Be2 {White should prevent ...Bd1.} 47.
Nb7 Bxf3 48. Nc5 Bd1 49. Nd3 Bxb3 50. Nxb4 Ba4 51. Na6 {Black escapes into a
draw.  Weighted Error Value: White=0.15/Black=0.29} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.37"]
[White "Cori, Jorge"]
[Black "Martirosyan, Haik M."]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2655"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "205"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,205,33,1,19,19,21,8,22,8,11,22,20,8,18,0,0,7,27,27,29,29,31,22,28,27,
25,32,42,41,41,42,35,34,50,37,54,43,50,50,51,51,52,36,37,37,45,8,64,64,64,64,
78,78,89,45,45,45,45,45,45,45,45,45,52,8,9,7,46,45,44,43,36,35,27,61,54,43,43,
0,48,48,44,42,62,62,62,62,63,18,62,62,67,67,112,112,112,112,112,112,112,112,
112,8,8,8,112,112,112,8,251,248,247,112,303,289,276,195,236,19,19,19,241,241,
241,236,183,112,112,112,634,535,395,268,388,718,1131,1096,954,954,915,859,1000,
993,951,875,6590,2402,6299,5485,961,29961,12843,5401,29949,7262,6227,4961,
29967,29969,29969,29970,29968,29967,29965,29966,7318,6127,29973,29974,29972,
29967,29979,29981,29981,29982,29982,29983,29982,29983,29983,29984,29984,29984,
29984,29985,29985,29985,29987,29988,29988,29989,29989,29989]} 1. d4 Nf6 2. c4
e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 c6 8. h3 h6 {D37: Queen's
Gambit Declined: 5 Bf4.} 9. a3 b6 10. b4 a5 {The position is equal.} 11. Bd3
Ba6 12. O-O Qc8 13. Qc2 Qb7 14. Rfb1 (14. Bxa6 {is more complex.} Rxa6 15. Rfb1
Rc8 16. Bg3 Ra7 17. Bh4) 14... Bxd3 15. Qxd3 axb4 16. axb4 Rxa1 17. Rxa1 {
And now Qa6 would win.} Ra8 18. Qb1 Bd8 19. Rxa8 Qxa8 {[#]} 20. Qa2 $146 ({
Predecessor:} 20. Qb2 Ne8 21. Ne5 Nxe5 22. Bxe5 b5 23. g4 Bh4 24. Qa2 Qxa2 {
1/2-1/2 (24) Behling,H (2223)-Ishemguzhin,I (2181) ICCF email 2014}) 20... Qb7
21. Qa4 b5 22. Qa2 Ne8 23. Ne1 Nc7 24. Nd3 Qa6 25. f3 Qxa2 26. Nxa2 Na6 27. Kf2
f6 28. e4 Kf7 29. g4 Bc7 30. Bxc7 {Bd6 is the strong threat.} Nxc7 $14 {
[%mdl 4096] Endgame KNN-KNN} (30... dxe4 $1 $11 31. fxe4 Nxc7) 31. e5 f5 32.
Nac1 g5 33. Nb3 fxg4 34. hxg4 Na6 $1 35. Na5 Nab8 36. f4 gxf4 37. Nxf4 Nf8 $1
38. Ke3 Ng6 39. Nh5 Ne7 40. Kd3 Kg6 41. Nf6 Na6 42. Kc3 Kg5 43. Nb7 Kg6 44. Nd8
Nc7 45. Kd2 Kg5 46. Ke3 Kh4 47. Kd3 Kg5 48. Kd2 Kg6 49. Ke3 Na6 $1 50. Nxe6
Nxb4 51. Kd2 Na6 52. Nh5 $1 Kf7 53. Nhf4 Ng6 54. Nd8+ Ke8 55. Nxg6 Kxd8 $16 {
KN-KN} 56. Nh4 $1 Nc7 57. Nf5 Ne6 58. Kc3 (58. Ke3 $1 $16) 58... Kd7 $11 59.
Nxh6 Ng5 (59... Kc7 $11 {remains equal.}) 60. Nf5 $16 Ne6 61. Ne3 (61. Kd2 $16)
61... Ng5 $2 (61... b4+ $1 $11 62. Kd3 (62. Kxb4 Nxd4 63. g5 Ke7 $11) 62... Kc7
) 62. Nc2 Ne6 63. Ne1 (63. Nb4 $18) 63... Ng5 $2 (63... b4+ $16 {was worth a
try.} 64. Kxb4 Nxd4) 64. Kd3 Ne4 65. Kc2 Ng5 66. Nd3 $2 (66. Kd2 $18) 66... Ne6
$1 $11 67. Kc3 Ke7 $2 (67... Kc8 $1 $11 {and Black is okay.}) 68. Nb4 $18 Kd7
69. Kd3 Nf4+ 70. Ke3 (70. Kd2 $18) 70... Ne6 $16 71. Nc2 Ke7 $2 {[%mdl 8192]} (
71... Kc8 $16) 72. Ne1 $18 Ng5 73. Nf3 Ne4 (73... Nf7 {is a better defense.}
74. g5 Nh8) 74. g5 Kf8 75. Kd3 Kf7 {[#]} 76. Kc2 $1 Ng3 77. Kc3 Nf5 78. Kb4 Ng3
79. Nd2 Kg6 80. Nb3 (80. Ka5 $142 Nf5 81. Nb3) 80... Nf5 {[#]} 81. Ka5 $1 {
[%cal Ra5b6]} Kxg5 82. Kb6 Ne7 83. Kc7 Kg6 84. Kd7 Kf7 85. Na5 b4 86. Nb3 Kf8
87. e6 Ng6 88. Kxc6 Ke7 89. Kxd5 Nf4+ 90. Ke5 Nxe6 91. d5 {White mates.} Nd8
92. Kd4 Kf6 93. c6 Nf7 94. Kc5 Ke7 95. Nd2 Ne5 96. Kxb4 Nd3+ 97. Kc4 Ne5+ 98.
Kc5 Nd3+ 99. Kd4 Nb4 100. Kc4 Na6 101. Ne4 Kd8 102. d6 Kc8 103. Kb5 {Weighted
Error Value: White=0.09/Black=0.12} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.38"]
[White "Antipov, Mikhail Al."]
[Black "Gukesh D"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2619"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,129,22,23,22,26,19,29,18,18,2,18,22,16,0,0,0,11,-1,6,0,22,0,0,-14,0,0,
0,0,0,0,0,0,0,0,-3,-6,-4,-10,0,-58,-50,-71,-39,-29,-26,-103,-37,-38,0,-20,-20,
-53,-24,-35,0,0,0,0,-3,-116,-123,-125,-143,-191,-194,-181,-171,-147,-67,-68,
-68,-100,-81,-143,-143,-217,-222,-208,-215,-185,-145,-161,-39,-39,-39,-39,-39,
-39,-39,-39,-8,-23,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
} 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 6. a4 {B30: Sicilian: 2...
Nc6 3 Bb5, lines without ...g6.} Nf6 7. Bg5 {[#]} Nb4 $146 ({Predecessor:} 7...
O-O 8. Bxf6 Bxf6 9. Nd5 Be6 10. c3 Rb8 11. Qd2 Bxd5 12. Bxd5 Ne7 13. Bb3 d5 14.
exd5 Nxd5 {0-1 (48) Antipov,M (2619)-Timofeev,A (2586) Sochi 2021}) 8. Ne2 {
White has an edge.} O-O 9. Ng3 Be6 10. c3 Nc6 {[%cal Bb4c6,Bc6e7,Be7g6,Bg6f4]
[%mdl 32]} 11. Bxf6 Bxf6 12. O-O b6 13. Bb5 Ne7 14. Bc4 Rb8 15. Qb3 Bg4 16. Ne1
Ng6 17. Nc2 Nf4 18. Ne3 Be6 19. Qd1 Bg5 20. Qf3 g6 21. Ne2 Nh5 22. Rad1 Qd7 23.
b3 Kg7 24. d4 (24. Ng3 $11) 24... Bxe3 $15 25. fxe3 {Hoping for dxe5.} Bg4 26.
Qf2 Qe7 27. dxc5 (27. h3 $11 Be6 28. dxe5 dxe5 29. Bd5) 27... dxc5 (27... bxc5
$17 28. Rd2 Be6) 28. Rd2 h6 29. Ng3 Nf6 30. Qe1 Rbd8 31. Bd5 h5 32. h3 h4 33.
Nh1 ({Much worse is} 33. hxg4 hxg3 34. Rxf6 Qxf6 $19) 33... Be6 {[%cal Rf6d5]}
34. Bxe6 (34. c4 $1 $11 {remains equal.}) 34... Rxd2 $17 35. Qxd2 {Black must
now prevent Bd5.} Qxe6 36. Nf2 Qxb3 37. Qd6 Re8 $36 {[%mdl 2048] White is
under strong pressure.} ({Not} 37... Qxc3 38. Qxf6+ $1 Kxf6 39. Nd1+ Ke6 40.
Nxc3 $16) 38. Qc7 a5 ({Black should play} 38... Qxa4 $17 39. Ng4 Nd7) 39. Ng4
$1 $15 {[%cal Rg4f6]} Nxg4 40. hxg4 {[%mdl 4096] Endgame KQR-KQR} Qe6 41. g5 {
[#]} (41. Kh2 $142) 41... Re7 $1 $17 {[%cal Re7c7]} 42. Qd8 {[#]} (42. Qb8 $17
{was necessary.}) 42... Rd7 $1 $19 {[%cal Rd7d8]} 43. Qf6+ Qxf6 44. Rxf6 {KR-KR
} Rd3 45. Rxb6 Rxc3 (45... Rxe3 $19 46. Rb5 Rxe4 47. Rxa5 Rc4) 46. Rb5 $15 Rxe3
47. Rxa5 Rxe4 {And now ...Rc4 would win.} 48. Rxc5 Rxa4 {...e4 is the strong
threat.} 49. Rxe5 Rf4 50. Kh2 Rf5 51. Rxf5 {The position is equal.} gxf5 $11 {
K3P-KPP} 52. Kh3 Kh7 53. Kxh4 {KPP-KPP} Kg6 54. Kg3 $1 Kxg5 {( -> ...f4+).
KPP-KP} 55. Kf3 Kf6 (55... f4 $5 56. Ke4 $8 Kg4 $11) 56. Kf4 Ke6 57. Kg5 Ke5
58. Kh6 Kf6 (58... Kf4 {with more complications.} 59. Kh5 Kg3 60. Kg5 f4 61.
Kf5 f6) 59. Kh5 f4 (59... Ke7 {looks sharper.} 60. Kh4 Kd6 61. Kg5 Ke6 62. Kh5
Kf6) 60. Kg4 Ke5 61. Kg5 f6+ 62. Kg6 Ke6 63. Kh6 Kd6 64. Kg7 Ke5 65. Kg6 {
Weighted Error Value: White=0.13/Black=0.12} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.39"]
[White "Ganguly, Surya Shekhar"]
[Black "Abasov, Nijat"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2617"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,66,10,17,18,18,16,4,2,57,40,55,53,44,54,52,8,8,14,9,8,8,10,9,15,15,
25,21,0,0,0,0,0,85,83,82,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5
2. c4 e6 3. Nf3 Nf6 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 {E04: Open Catalan:
5 Nf3.} Bxd2+ 8. Qxd2 c6 9. a4 b5 (9... Ne4 $11 10. Qc2 Nd6) 10. axb5 $14 {
10.Na3 is vanishing.} cxb5 11. Qg5 O-O 12. Qxb5 Ba6 13. Qxa5 Bb7 $1 $36 {
[%mdl 2048] Black has the initiative.} 14. Qxd8 Rxa1 {[#]} 15. Qxf8+ Kxf8 16.
O-O Ra2 17. Ne5 Ba6 18. Rc1 Rxb2 {[#]} 19. Na3 $146 ({Predecessor:} 19. e3 Nbd7
20. Nxd7+ Nxd7 21. Nc3 Rb3 22. Kf1 e5 23. Ke1 exd4 24. exd4 Nf6 25. h3 {
1/2-1/2 (73) Ju,W (2583)-Cramling,P (2470) Lausanne 2020}) 19... Rxe2 20. Naxc4
Bxc4 21. Rxc4 {[#] aiming for Rc8+.} Nbd7 (21... Re1+ $11 22. Bf1 Nbd7) 22.
Rc8+ ({Much weaker is} 22. Bf1 $6 Rb2 $11) 22... Ke7 23. Rc7 (23. Kf1 $16 Rb2
24. Bc6 Nxe5 25. dxe5) 23... Kd6 {The position is equal.} 24. Rc6+ Ke7 25. Rc7
Kd6 26. Ra7 (26. Rc6+ {looks sharper.}) 26... Nxe5 27. dxe5+ Kxe5 28. Rxf7 $11
{[%mdl 4096] Endgame KRB-KRN} g5 29. Bf1 Rd2 30. f4+ Kf5 31. fxg5 Kxg5 32. Re7
Rd6 33. Bh3 Rd1+ {Weighted Error Value: White=0.06/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.40"]
[White "Erigaisi Arjun"]
[Black "Zvjaginsev, Vadim"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2634"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,87,39,36,73,70,76,70,70,74,81,100,114,77,91,87,100,100,100,100,100,
100,99,84,101,14,14,0,97,90,123,123,164,145,181,170,162,162,300,312,306,312,
359,356,422,406,481,441,480,505,480,485,502,502,502,485,502,502,502,502,502,
494,545,545,706,714,643,425,912,710,648,618]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4.
Nc3 O-O 5. e4 d6 6. h3 c5 7. d5 e6 8. Bd3 exd5 9. exd5 Re8+ 10. Be3 Rxe3+ {
The modern move. E90: King's Indian: Classical: Early deviations and 6 h3.} 11.
fxe3 Qe7 12. O-O Nbd7 {White is slightly better.} 13. Qd2 b6 14. Rae1 {[#]} Bb7
$146 ({Predecessor:} 14... Ba6 15. b3 Ne5 16. Nxe5 Qxe5 17. Nd1 Re8 18. Rf3 Qe7
19. Ref1 Rf8 20. Kh1 Nd7 {1/2-1/2 (49) Postny,E (2615)-Morozevich,A (2656) St
Petersburg 2018}) 15. g4 h6 16. Qh2 Nh7 17. Ne4 Ne5 18. Nxe5 Bxe5 19. Qg2 Rf8
20. Re2 {[%cal Be1e2,Be2f2,Bf2f3][%mdl 32]} Bc8 21. a3 (21. Ref2 $16) 21... Qh4
$11 22. Ref2 Kg7 {[#]} (22... h5 $1 $11 {keeps the balance.}) 23. Rf3 $1 $16 {
Black is now going downhill.} Ng5 24. Nxg5 hxg5 25. b4 f6 26. bxc5 bxc5 27. Rb1
f5 {[#]} (27... Rf7 $142 28. Qc2 Qh7) 28. Qf2 $1 $18 Qxf2+ 29. Kxf2 f4 30. Rb8
Bc3 31. Ra8 a6 32. exf4 {White is clearly winning.} gxf4 33. g5 Bd4+ 34. Ke2
Be3 35. Ra7+ Rf7 36. Rxf7+ Kxf7 {[%mdl 4096] Endgame KRB-KB} 37. Be4 a5 38. Kd3
Bd7 39. h4 Ba4 40. Rf1 Bb3 41. Rb1 a4 42. Rh1 Ba2 (42... Bf2 $142 43. Bf3 Kf8)
43. Bf3 Bd4 44. Bd1 {Weighted Error Value: White=0.14/Black=0.27} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.41"]
[White "Kovalev, Vladislav"]
[Black "Kuybokarov, Temur"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2634"]
[BlackElo "2549"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,92,23,13,40,0,6,2,8,10,9,-29,-30,-24,-20,-19,-4,-8,0,-7,-1,-20,6,3,
10,0,8,16,22,17,23,23,25,35,31,24,32,11,13,5,5,8,7,5,8,8,8,0,0,0,0,-119,0,-77,
-68,-74,-70,-113,-118,-244,-236,-216,-193,-297,-290,-277,-276,-475,-470,-468,
-468,-468,-468,-468,-454,-803,-669,-788,-677]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4.
Ba4 Nf6 5. O-O Bc5 6. c3 b5 7. Bb3 d6 8. a4 Bg4 9. h3 Bh5 {C78: Ruy Lopez:
Archangelsk and Möller Defences.} 10. d3 Na5 11. Ba2 b4 $1 {The position is
equal.} 12. Nbd2 O-O 13. Nc4 Nxc4 14. Bxc4 bxc3 15. bxc3 {[%cal Bb2c3,Bc3d4,
Bd4c5][%mdl 32]} c6 {[#]} 16. d4 $146 ({Predecessor:} 16. g4 Bg6 17. Bg5 d5 18.
Ba2 dxe4 19. Nxe5 exd3 20. Nxg6 hxg6 21. Qf3 Qc7 22. Rad1 {1/2-1/2 (35) Adams,
M (2744)-Caruana,F (2787) London 2015}) 16... Bxf3 17. gxf3 exd4 18. cxd4 Bb6
19. Be2 c5 20. a5 Bxa5 21. dxc5 $1 Bc3 22. Rxa6 Rxa6 23. Bxa6 dxc5 24. Qxd8
Rxd8 25. Be3 Bd4 26. Rd1 Kf8 27. Bc4 Ke7 28. Rb1 Nd7 29. Rb7 Rb8 30. Ra7 f6 31.
Bf4 Be5 32. Bd2 Rb2 33. Ba5 (33. Be3 $11 {remains equal.}) 33... Bd4 ({Black
should play} 33... Bb8 $1 $17 {[%cal Rb8a7]} 34. Ra8 Ne5) 34. Ra8 (34. f4 $11)
34... Ne5 $1 $17 {[%cal Re5c4]} (34... Rxf2 $2 35. Bd8+ Kd6 36. Ra6+ Nb6 37.
Rxb6+ $18) 35. Ra7+ Ke8 $1 36. Ra8+ Kd7 $1 37. Ra7+ {[#] This costs White the
game.} (37. Bd5 $17) 37... Kc6 $1 $19 38. Bd5+ Kb5 39. f4 (39. Bc7 $142) 39...
Nf3+ ({Worse is} 39... Rxf2 40. fxe5 c4 41. Ra8 $11) ({Weaker is} 39... Bxf2+
40. Kf1 $17) 40. Kg2 Nh4+ ({Don't take} 40... Rxf2+ 41. Kg3 $19) 41. Kg3 $2 (
41. Kh2 c4 42. Ra8 Bxf2 43. Bd8 Be1+ 44. Kh1) 41... Bxf2+ {Black is clearly
winning.} 42. Kg4 {[#] aiming for Rb7+.} g6 $1 {[%csl Gg6][%cal Rh7h5]} 43.
Rxh7 {Strongly threatening Rb7+.} Kxa5 44. Ra7+ Kb4 45. e5 (45. Rb7+ $142 Kc3
46. Rxb2 Kxb2 47. e5 fxe5 48. fxe5) 45... Rd2 {And now ...Rd1 would win.} 46.
Rb7+ Kc3 {Weighted Error Value: White=0.45/Black=0.05} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.42"]
[White "Moussard, Jules"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2632"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,86,44,0,36,31,24,12,13,15,27,0,0,7,8,10,10,0,0,0,0,0,0,0,0,0,0,-22,
-37,-129,0,0,0,-69,0,0,10,0,0,-18,-14,-10,-10,-16,-12,-14,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4
5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6 9. Qc2 h6 {C42: Petroff Defence: 3
Nxe5 and unusual White 3rd moves.} 10. Re1 Be6 {[#]} 11. b3 $146 ({Predecessor:
} 11. cxd5 cxd5 12. Bxe4 dxe4 13. Qxe4 Bd5 14. Qg4 Qd7 15. Qxd7 Nxd7 16. Nc3
Bxf3 17. gxf3 {1/2-1/2 (54) Anand,V (2753)-Aronian,L (2773) Chess.com INT 2020}
) 11... Bb4 12. Nbd2 Nd7 13. Bxe4 dxe4 14. Qxe4 Bc3 $1 {[%cal Rc3a1]} 15. Rb1
Qa5 $1 16. Qf4 (16. c5 {is more complex.} Qxa2 17. Qd3 Bb4 18. Re3 Nf6 19. Re2)
16... Qxa2 17. Re3 Bxd2 18. Nxd2 {[#] d5! is the strong threat.} Qc2 19. Ra1
Rfd8 20. Nf3 b5 21. d5 cxd5 22. h3 ({Better is} 22. cxb5 $15 d4 23. Ne1 (23.
Qxd4 Nc5 $15)) 22... Nf8 (22... bxc4 $6 23. Nd4 $11) ({Black should try} 22...
dxc4 $17 23. Ba3 Nf8 24. Bxf8 Rxf8) 23. cxb5 $11 d4 24. Qe4 Qxe4 ({Reject} 
24... Bxb3 $6 25. Nxd4 Qd1+ 26. Kh2 $11) (24... d3 $15) 25. Rxe4 {The position
is equal.} d3 26. Be3 Bd5 27. Re7 Bxf3 28. gxf3 Rab8 29. Rexa7 Rxb5 30. Ra8
Rbb8 (30... Rxa8 {keeps more tension.} 31. Rxa8 f6 32. Rd8 Rxb3 33. Bc5 d2) 31.
Rxb8 Rxb8 {[%mdl 4096] Endgame KRB-KRN} 32. Rb1 Ng6 33. b4 {[%cal Bb3b4,Bb4b5,
Bb5b6][%mdl 32]} Nh4 34. b5 d2 35. b6 $1 Nxf3+ 36. Kf1 {Strongly threatening
Ke2.} Ne5 $1 37. Bxd2 {Black must now prevent b7.} Nc4 $1 {[%csl LRb6,LRd2]
[%mdl 64] [#] Double Attack} 38. Be3 Nxe3+ 39. fxe3 Kf8 40. Ke2 Ke7 41. Kd3 {
Black should prevent Kc4.} Kd6 42. Kc4 {And now Kb5 would win.} Kc6 43. Rg1 Rg8
{Weighted Error Value: White=0.14/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.43"]
[White "Pichot, Alan"]
[Black "Suleymanli, Aydin"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2628"]
[BlackElo "2541"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,83,11,21,11,20,-17,-34,-33,43,26,30,28,39,37,98,56,149,128,237,110,
133,102,102,95,93,86,86,81,89,81,79,72,90,39,41,40,39,38,45,46,66,21,32,-8,15,
20,51,49,42,32,31,29,32,25,36,22,33,40,38,32,42,16,22,10,29,0,0,0,0,0,0,0,0,0,
0,-33]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Bd3 Bxd3 6. Qxd3 {B12:
Caro-Kann: Advance Variation.} Qa5+ $1 {[%mdl 4] is more profitable than 6...
e6 at the moment.} 7. b4 Qxb4+ 8. Nd2 {Black is slightly better.} Qb5 (8... e6
$15) 9. c4 $14 dxc4 10. Nxc4 {[#]} Qd5 $146 ({Predecessor:} 10... e6 11. a4 Qa6
12. Ba3 Nd7 13. Bxf8 Kxf8 14. Nf3 Ne7 15. O-O Nb6 16. Rfc1 Rd8 {1-0 (41)
Chigaev,M (2643)-Karjakin,S (2757) Moscow 2021}) 11. Ne2 $36 {[%mdl 3072] [#]
And now Nf4 would win. White has compensation. Black is under pressure.} Na6 (
11... e6 $14) 12. O-O Rd8 (12... Nb4 $14 13. Qb3 e6) 13. Rd1 {Strongly
threatening Nf4.} Nb4 (13... e6 $16 {was called for.}) 14. Qb3 (14. Qc3 $18 {
and the rest is easy.}) 14... b5 $16 15. Qxb4 Qxc4 16. Qxc4 bxc4 17. Be3 e6 18.
Rdc1 Ne7 19. Rxc4 Rb8 20. Rac1 Kd7 21. Nc3 ({White should play} 21. g3 $16)
21... Nf5 $14 22. Ra4 Rb7 23. Bg5 Bb4 24. Ne4 Rhb8 25. Ra6 Rc7 26. Rb1 {
[#] Hoping for a3.} Rcb7 27. g3 Kc7 28. Rc1 Nxd4 {White must now prevent ...
Ne2+.} 29. Rc4 Nf5 30. Rcxc6+ Kd7 31. Rc1 Rc8 32. Rb1 {Threatens to win with
a3.} Rcb8 33. Kg2 Ke8 34. Rb3 Kf8 35. Kh3 Kg8 36. Bf4 Be7 (36... Bf8 {is more
complex.} 37. Rxb7 Rxb7 38. Nd6 Bxd6 39. exd6 f6) 37. Rxa7 Rxb3 {The position
is equal.} 38. axb3 Rxb3 39. Nd6 Nxd6 40. exd6 Bf6 41. Ra5 Rd3 42. Rxh5 {
Black escapes into a draw.  Weighted Error Value: White=0.14/Black=0.15}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.44"]
[White "Gelfand, Boris"]
[Black "Bartel, Mateusz"]
[Result "1/2-1/2"]
[ECO "E10"]
[WhiteElo "2680"]
[BlackElo "2597"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,84,50,41,43,26,13,25,38,43,32,29,43,96,91,79,27,17,29,31,-37,-25,-24,
-20,-13,-27,-24,-16,-18,-23,-18,-23,-25,-21,-25,-25,-20,-15,-18,-35,-130,-130,
-129,-122,-29970,-29971,-5297,-130,-109,-122,-114,-116,-109,-108,-108,-107,
-115,-25,-25,-25,-25,-26,-27,-26,-26,-26,-40,-26,-55,0,0,0,0,0,0,0,0,0]} 1. d4
Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. e4 Nxe4 6. Bd3 {E10: Blumenfeld Gambit.} Nf6
7. O-O {7.Nc3 is the modern continuation.} (7. cxb5 Nxd5 8. Be4 Bb7 $17) 7...
Be7 {has lost popularity (7...bxc4).} 8. Nc3 {White has an edge.} O-O 9. Nxb5
d6 10. dxe6 fxe6 {[#]} (10... Bxe6 $14 11. Bf4 Nc6) 11. Bf4 $146 ({Predecessor:
} 11. Ng5 h6 12. Ne4 d5 13. Nxf6+ Bxf6 14. Bc2 Nc6 15. Qh5 a6 16. Nc3 Nd4 17.
Bd3 Bb7 18. cxd5 Bxd5 19. Qg6 Nf5 20. Bxf5 exf5 21. Bxh6 Bf7 22. Qg3 {1/2-1/2 
(22) Dankhazi,A (2232)-Kende,G (2101) Balatonalmadi 2015}) 11... Kh8 12. Bc2 (
12. Ng5 $1 $16 {[%cal Rg5h7]} h6 13. Nf3) 12... e5 $11 13. Bg5 {Strongly
threatening Bxf6.} Nc6 14. Nh4 ({White should try} 14. Bxf6 $14 gxf6 15. Qd5)
14... Bg4 15. f3 Be6 16. b3 a6 17. Nc3 Nd4 18. Qd3 e4 19. fxe4 Ng4 20. Rxf8+
Qxf8 21. Bxe7 Qxe7 22. Nf3 Rf8 {Threatens to win with ...Nxf3+.} 23. Nxd4 cxd4
$40 {[%mdl 128] Black has some attack.} 24. Qxd4 (24. Nd5 $1 $15 Qg5 25. e5)
24... Qh4 $17 {[%csl Gg4][%cal Rh4h2]} 25. h3 {[#]} Nf2 {[%cal Rf2h3]} 26. Ne2
$2 {[%mdl 8192]} (26. Qxd6 $2 Nxh3+ 27. gxh3 Qf2+ 28. Kh1 Qf3+ 29. Kg1 Qe3+ 30.
Kh1 Rf2 $19) (26. Qe3 $17 Nxh3+ 27. gxh3 Bxh3 28. Ne2 Qg4+ 29. Qg3 (29. Ng3 Rf3
{[%mdl 64] Double Attack} 30. Qf2 Rxg3+ 31. Kh1 Bg2+ {[%mdl 64] Double Attack}
32. Kg1 Bf3+ 33. Kf1 Qh4 34. Qxg3 Qxg3 35. Bd1 Qg2+ 36. Ke1 Qg1+ 37. Kd2 Qd4+ {
[%mdl 64] Double Attack} 38. Ke1 Qxa1 39. Kd2 Qd4+ 40. Kc1 Qc3+ 41. Bc2 Bxe4
42. Kd1 Qxc2+ {[%mdl 64] Double Attack} 43. Ke1 Bd3 44. b4 Qe2#) 29... Qxe2 30.
Qxh3 Qf2+ 31. Kh1) 26... Nxh3+ $1 27. gxh3 Bxh3 $2 (27... Rf3 $19 {and Black
stays clearly on top. ( -> ...Qg5+)} 28. Qd3 Qf2+ 29. Kh1 Rxd3 30. Bxd3 Qf3+ {
[%mdl 64] Double Attack} 31. Kg1 Bxh3) 28. Qe3 {Black must now prevent Ng3.}
Qg4+ 29. Qg3 {aiming for Qxg4.} ({Not} 29. Ng3 $2 Rf3 $19) 29... Qxe2 30. Qxh3
Qf2+ ({Of course not} 30... Qxc2 $6 31. Rf1 $11) 31. Kh1 Qxc2 {[%mdl 4096]
Endgame KQR-KQR} 32. Qg2 {[#]} Rf2 (32... Qd3 $1 $17 33. Rg1 g6) 33. Rf1 $11
Rxf1+ ({Inferior is} 33... Rxg2 34. Rf8#) 34. Qxf1 {[%cal Rf1f8]} Qxe4+ {KQ-KQ}
35. Kg1 {[%cal Rf1f8]} Kg8 (35... Qg6+ {feels hotter.} 36. Kh2 Kg8 37. Qf3 Qh6+
38. Kg2 Qg5+) 36. b4 $1 Qd4+ 37. Kh1 $1 d5 38. b5 Qe4+ ({Black should play} 
38... dxc4 $15 39. bxa6 c3) 39. Qg2 {And now Qxe4 would win.The position is
equal.} Qxc4 40. bxa6 Qc1+ 41. Kh2 Qh6+ 42. Kg1 Qb6+ {White happily takes the
draw.  Weighted Error Value: White=0.23/Black=0.26} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.45"]
[White "Adhiban, B.."]
[Black "Georgiev, Kiril"]
[Result "1/2-1/2"]
[ECO "D53"]
[WhiteElo "2672"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "240"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,240,0,-9,20,14,23,17,27,-7,-5,-7,-7,-7,-4,-4,-6,-9,-7,-2,-4,-15,-15,
-13,-12,-14,-13,-10,-12,-9,-6,-6,0,-26,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-75,-75,
-68,-72,-73,-68,-71,0,-6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,8,8,29,29,68,
68,68,68,68,68,68,68,68,22,68,68,68,68,68,68,68,45,45,45,45,45,45,45,45,45,45,
45,45,45,45,45,45,45,45,45,45,45,45,45,45,0,45,45,45,45,45,45,45,45,45,45,45,
45,45,45,45,22,22,17,17,17,17,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5
Be7 5. cxd5 Nxd5 6. Bxe7 Qxe7 7. Nf3 $1 {[%mdl 4] is recently more successful
than 7.e4.} O-O 8. e3 Nf6 {[#] D53: Queen's Gambit Declined: 4 Bg5 Be7: Early
deviations.} 9. Be2 $146 ({Predecessor:} 9. Bd3 c5 10. dxc5 Rd8 11. a3 Nc6 12.
O-O e5 13. Qc2 Rxd3 14. Qxd3 e4 15. Nxe4 Nxe4 16. b4 {1/2-1/2 (34) Barreras
Garcia,A (2410)-Schumacher,H (2308) ICCF email 2006}) 9... c5 10. O-O Nc6 11.
Ne5 Rd8 {White must now prevent ...Nxe5.} 12. Nxc6 bxc6 13. Qa4 cxd4 14. exd4
Rb8 15. Rab1 c5 16. dxc5 Qxc5 17. Bf3 Bb7 18. Bxb7 Rxb7 19. Rfd1 Rdb8 20. Ne4
Nxe4 21. Qxe4 g6 22. b3 Rc7 23. Rd2 Qc3 24. Qe2 Rbc8 25. Rbd1 Qf6 26. h3 h5 27.
g3 Kg7 28. h4 Rc5 29. Kg2 a5 30. Rd4 Rc2 31. R1d2 {[#]} (31. R4d2 $11 {remains
equal.} Qf5 32. Rxc2 Rxc2 33. Rd2) 31... Rxa2 $1 $17 32. Rxa2 Qxd4 33. Rxa5 {
[%mdl 4096] Endgame KQR-KQR} Rc3 34. Rb5 {[#]} Kf6 (34... Kh7 $1 $17) 35. Kh2
e5 36. b4 e4 37. Qb2 Rd3 38. Rb6+ Kg7 39. Qxd4+ Rxd4 $11 {KR-KR} 40. Kg2 Rd2
41. Kf1 Rb2 42. b5 f6 43. Rb7+ Kh6 44. Rf7 Rb1+ 45. Ke2 Rb2+ 46. Ke3 {With the
idea Rb7.} Rb3+ 47. Kd4 Rxb5 48. Rxf6 Kg7 49. Rf4 Rb4+ 50. Ke5 Ra4 51. Rxe4
Ra5+ 52. Ke6 Ra6+ 53. Kd5 Ra2 54. Rf4 $1 Re2 55. Kd4 Kg8 56. f3 Kg7 57. Re4 Rg2
58. Ke3 Kf6 59. Rf4+ Kg7 60. Rd4 Ra2 61. Kf4 Ra5 62. Ke4 Ra3 63. Rd5 Kf6 64.
Rd6+ Kg7 65. Kf4 Ra5 66. Re6 Rf5+ 67. Ke4 Ra5 68. Rd6 Ra3 69. Rd3 Ra5 70. Rd5
Ra3 71. Kf4 Kf6 72. Rd6+ Kg7 73. Re6 Kf7 74. Re3 (74. Re4 {keeps more tension.}
Kf6 75. Re8 Ra4+ 76. Ke3 Ra3+ 77. Ke2) 74... Ra5 75. Re5 Ra3 76. g4 hxg4 {
The position is equal.} 77. fxg4 Ra7 78. Re4 Ra5 79. g5 Rf5+ 80. Kg4 (80. Ke3 {
with more complications.} Kg7 81. Re7+ Kh8 82. Rc7 Kg8 83. Rc6) 80... Ra5 81.
Rf4+ Kg7 82. Rd4 Ra7 83. Kf4 Re7 84. Re4 (84. h5 {keeps more tension.} gxh5 85.
Rd6 Re1 86. Rh6 Rf1+ 87. Kg3) 84... Ra7 85. Ke5 Ra1 86. Rd4 Re1+ 87. Kd6 (87.
Kf4 {looks sharper.} Rf1+ 88. Kg3 Rg1+ 89. Kf2 Rb1 90. Rd7+) 87... Kf7 88. Rf4+
Kg7 89. Kd5 (89. Kc5 {with more complications.} Rc1+ 90. Kd4 Rd1+ 91. Ke3 Ra1
92. Rd4) 89... Ra1 90. Rc4 Rd1+ (90... Rb1 {is more complex.} 91. Rc7+ Kg8 92.
Ra7 Rb3 93. Ke6 Rb6+) 91. Ke4 Re1+ 92. Kd3 Rd1+ 93. Ke3 Re1+ 94. Kd2 $1 Rh1 95.
Re4 Rh3 96. Ke2 Kf7 97. Kf2 Ra3 98. Re3 Ra4 99. Kg3 Rb4 100. Rf3+ Kg7 101. Rf4
Rb3+ 102. Kg4 Rb1 103. Rd4 Rf1 104. Rd7+ Kg8 105. Re7 (105. Rd6 {feels hotter.}
Kh7 106. h5 Rg1+ 107. Kf4 Rf1+ 108. Kg3) 105... Kf8 106. Rc7 Kg8 107. Rc3 Kg7
108. Rd3 Rg1+ 109. Kf4 Rh1 110. Rd7+ Kg8 111. Ke5 {Strongly threatening Kf6.} (
111. Rd6 $5 {[%cal Rd6g6]} Kf7 112. Kg4 $14) 111... Rf1 112. Rd8+ Kg7 113. Rd7+
Kg8 114. Ke6 Rf4 115. Ke5 (115. Rd1 {seems wilder.} Rf3 116. Ke5 Rf5+ 117. Ke6
Rf3) 115... Rf5+ (115... Rf1 {is interesting.}) 116. Ke6 Rf4 117. Rc7 Rf1 118.
Rc8+ Kg7 119. Rc7+ Kg8 120. Rc8+ Kg7 {Weighted Error Value: White=0.06/Black=0.
05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.46"]
[White "Van Foreest, Lucas"]
[Black "Cheparinov, Ivan"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2543"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,86,10,6,12,10,24,23,38,38,33,-19,-24,-41,-10,-29,-33,-31,-51,-115,
-127,-122,-120,-129,-113,-120,-123,-109,-113,-118,-72,-93,-74,-66,-70,-71,-56,
-94,-95,-89,-65,-91,-35,-74,-62,-87,-64,-59,-49,-76,-29,-79,-85,-93,-79,-92,
-79,-87,-34,-34,-47,-56,-56,-58,0,0,9,7,7,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6
3. Bc4 Nf6 4. d3 Bc5 5. O-O d6 6. c3 O-O 7. Re1 $1 {[%mdl 4] is more
profitable than 7.Bb3 at the moment.} a5 {C54: Giuoco Piano: 4 c3 Nf6, main
lines with 5 d4 and 5 d3.} 8. Nbd2 Ng4 9. Re2 Kh8 {White has an edge.} 10. h3
Nh6 {[#]} 11. g4 $146 (11. Bd5 $14) ({Predecessor:} 11. Nf1 f5 12. Bg5 Qd7 13.
Bxh6 gxh6 14. exf5 Qxf5 15. Bd5 Qg6 16. d4 Bb6 17. Ng3 {1-0 (32) Bakhmatsky,V 
(2666)-Harutyunian,T (2800) Chess.com INT 2019}) 11... Be6 12. Nf1 d5 (12...
Bxc4 {is more complex.} 13. dxc4 Ng8 14. Kg2 Nf6 15. a4 Nd7) 13. exd5 (13. Bb3
{is interesting.} dxe4 14. dxe4 Qxd1 15. Bxd1 a4 16. Bxh6 gxh6 17. Ng3) 13...
Bxd5 14. Nxe5 {[#] Black must now prevent Bxh6.} Nxg4 15. Bxd5 ({Don't play} 
15. hxg4 Nxe5 16. Bxd5 (16. Rxe5 Qh4 17. Qf3 Bxf3 18. Ng3 Qxg3+ {[%mdl 64]
Double Attack} 19. Kf1 Qxf2#) 16... Qxd5 $17) ({White should play} 15. Nxc6 $15
Nxf2 {[%mdl 64] Double Attack} 16. Nxd8 Nxd1+ 17. Kh2 Bd6+ 18. Kg1 Bxc4 19.
Nxb7 Bxd3 20. Re1) (15. Nxc6 Bxc6) 15... Ncxe5 $17 ({Much weaker is} 15...
Ngxe5 $6 16. Bxc6 Nxc6 17. Re1 $11) 16. Bg2 {[#] Strongly threatening d4.} Nxf2
$1 17. Rxf2 Nxd3 {[%mdl 64] Pin} ({Much less strong is} 17... Qxd3 18. Qxd3
Bxf2+ 19. Kxf2 $15) (17... Bxf2+ 18. Kxf2 Nxd3+ 19. Kg1 $15) 18. Be3 {aiming
for Rd2.} Bxe3 19. Nxe3 {Hoping for Rd2.} Nxf2 20. Kxf2 Qh4+ 21. Kg1 f5 22. Qf3
Rae8 23. Rf1 Qg5 24. Nd5 c6 25. Nf4 {[%cal Bd5f4,Bf4e2,Be2d4][%mdl 32]} Qe7 26.
Qf2 Qd6 (26... Rf6 $17) 27. Ne2 Re5 28. Nd4 f4 29. Qh4 Re3 30. Kh1 Qf6 31. Qg4
g6 32. Qd1 Rfe8 33. Qa4 Re1 34. Nf3 Rxf1+ ({Black should try} 34... R1e2 $17
35. b3 b6) 35. Bxf1 $15 b6 36. Qc4 g5 37. Qa6 h5 (37... c5 $15) 38. Qxb6 $11 {
The position is equal.} g4 39. Qxa5 Qg6 40. Nh4 Qe4+ 41. Kg1 Qe3+ 42. Kh1 Qe4+
43. Kg1 Qe3+ {Weighted Error Value: White=0.13/Black=0.12} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.47"]
[White "Neiksans, Arturs"]
[Black "Rakhmanov, Aleksandr"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2570"]
[BlackElo "2657"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,61,29,30,30,31,28,35,34,40,31,31,24,19,20,39,16,24,22,28,11,14,14,17,
4,31,28,28,20,17,16,14,18,29,8,21,9,8,6,8,0,0,0,0,-9,0,0,0,0,0,0,0,0]} 1. e4 e5
2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nf6 6. d4 Be7 7. h3 {C42: Petroff
Defence: 3 Nxe5 and unusual White 3rd moves.} O-O 8. Bd3 Re8 9. O-O {White is
slightly better.} h6 10. Bf4 Bf8 11. Re1 Rxe1+ 12. Qxe1 {[#]} Be6 $146 ({
Predecessor:} 12... Nbd7 13. Qd2 b6 14. d5 Bb7 15. Bc4 a6 16. a4 Nc5 17. Re1
Nxa4 18. Nxa4 b5 {1-0 (29) Klenburg,M (2346)-Paravyan,D (2647) Chess.com INT
2021}) 13. Qe2 Nc6 {[%cal Bb8c6,Bc6e7,Be7g6][%mdl 32]} 14. a3 Ne7 15. Re1 c6
16. Ne4 Nxe4 17. Qxe4 {[%csl Gd3][%cal Re4h7] [#]} Ng6 (17... Bf5 {keeps more
tension.} 18. Qe2 Bxd3 19. Qxd3 Nd5 20. Bd2 Nf6) 18. Bg3 Qf6 19. Nh4 {[%cal
Rh4g6]} (19. Qe3 {is interesting.} Rd8 20. c3 Bd7 21. d5 c5 22. Qd2) 19... d5
20. Qf3 Qxf3 21. Nxf3 {[#] Bxg6 is the strong threat.} Ne7 22. Bd6 Nf5 {
The position is equal.} 23. Bxf8 Kxf8 24. c3 Nd6 25. Ne5 Re8 26. Kf1 (26. f4 {
feels hotter.} g5 27. Kf2 f6 28. Ng4 Bxg4 29. Rxe8+ Kxe8 30. hxg4 b5 31. b3)
26... g5 27. Nf3 Kg7 28. g4 f6 29. Kg2 Bd7 30. Rxe8 Bxe8 31. Nd2 {Weighted
Error Value: White=0.06/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.48"]
[White "Paravyan, David"]
[Black "Goryachkina, Aleksandra"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2642"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,62,0,0,12,-6,-7,0,-15,-3,0,0,0,-55,-35,-54,-61,-53,-10,-29,-24,-31,
-32,-39,-30,-32,-11,-10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4
e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 h6 6. c3 d6 {The main line 6...d6
scores better than 6...0-0.} 7. Bb3 O-O 8. h3 a5 {C54: Giuoco Piano: 4 c3 Nf6,
main lines with 5 d4 and 5 d3.} 9. Be3 {[#]} (9. d4 {feels hotter.} Ba7 10. Re1
Re8 11. d5 Ne7 12. c4) 9... Re8 $146 ({Predecessor:} 9... Bxe3 10. fxe3 Be6 11.
Bc2 d5 12. exd5 Nxd5 13. Qe2 f5 14. Nbd2 Qf6 15. Ba4 Nce7 16. Rae1 {1/2-1/2 
(16) Alekseev,E (2639)-Meskovs,N (2557) Tallinn 2019}) 10. Bxc5 dxc5 11. Na3
Bd7 12. Re1 Nh5 13. d4 (13. Ba4 $11) 13... cxd4 14. cxd4 exd4 15. Nb5 Be6 16.
Nfxd4 Nxd4 17. Nxd4 Bxb3 18. Nxb3 Nf4 19. Qg4 Ne6 (19... Qd6 {seems wilder.}
20. Rad1 Qe5 21. Qf5 Qxf5 22. exf5 Rxe1+ 23. Rxe1 a4) 20. Rad1 {The position
is equal.} Qg5 21. Qxg5 hxg5 22. Nd4 Nxd4 23. Rxd4 $11 {[%mdl 4096] Endgame
KRR-KRR} Rad8 24. Red1 Rxd4 25. Rxd4 {KR-KR} f6 26. Rd7 Rxe4 27. Rxc7 b5 28.
Kf1 Ra4 29. a3 b4 30. axb4 Rxb4 31. Ra7 Rxb2 {Weighted Error Value: White=0.07/
Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.49"]
[White "Durarbayli, Vasif"]
[Black "Bjerre, Jonas Buhl"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2629"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,95,23,29,14,25,-34,-27,-39,-20,-38,-38,-41,-29,-29,-34,-42,-12,-13,
-18,-11,3,0,0,-8,8,0,35,26,31,31,50,23,23,21,21,21,21,21,20,0,0,0,0,4,5,5,6,0,
0,0,5,0,9,10,18,22,30,31,39,36,38,37,47,26,39,34,43,47,77,75,300,300,300,300,
300,300,300,300,428,421,568,560,520,514,585,559,547,532]} 1. e4 c5 2. Nf3 d6 3.
d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h4 {B90: Sicilian Najdorf: Unusual White 6th
moves, 6 Be3 Ng4 and 6 Be3 e5.} e5 7. Nf5 $5 {[%mdl 4] A promising side line.}
({Better is} 7. Nb3 $11) 7... d5 $15 8. Qf3 {[%cal Re4d5] [#] Black has an
edge.} d4 $146 ({Predecessor:} 8... g6 9. Nh6 Be6 10. Bg5 Bxh6 11. Bxf6 Qb6 12.
Bxh8 Qxb2 13. Rb1 Qxc2 14. Qd3 Qxd3 15. Bxd3 d4 16. Nd5 Bxd5 17. exd5 Nd7 18.
h5 Bg5 19. hxg6 hxg6 20. Bxe5 Nc5 {1-0 (20) Yoo,C (2485)-Sarana,A (2649) Chess.
com INT 2021}) 9. Nd5 Nxd5 10. exd5 Bxf5 11. Qxf5 Nd7 {[%cal Bb8d7,Bd7f6,Bf6g4]
[%mdl 32]} 12. c3 Qf6 13. Qxf6 Nxf6 14. cxd4 Bb4+ 15. Ke2 exd4 16. a3 Ba5 17.
d6 d3+ 18. Kxd3 Ng4 19. Ke2 O-O-O 20. Bf4 Rhe8+ 21. Kf3 Ne5+ 22. Kg3 {[#] And
now Rc1+ would win.} Rxd6 23. Rc1+ Bc7 24. Be2 Rd4 25. Rc2 Nc6 26. Bg4+ Kb8 27.
Bxc7+ Kxc7 28. Rd1 {Strongly threatening Rxd4.} (28. Bf3 {seems wilder.} Kb6
29. Rhc1 Re6 30. h5 g6 31. Rc3) 28... Rxd1 (28... Red8 {is more complex.} 29.
Rxd4 Rxd4 30. Bf3 Kd6 31. Rc3 g6) 29. Bxd1 $11 {[%mdl 4096] Endgame KRB-KRN}
Rd8 30. Bh5 Rd3+ 31. Kf4 Rd4+ 32. Ke3 Rxh4 33. Bxf7 Kd6 34. Rd2+ Ke7 35. Bd5
Rh6 36. f4 Rd6 37. Ke4 Nb8 38. Rc2 b6 39. Rc7+ Kf6 $2 {This move loses the
game for Black.} (39... Nd7 $16) 40. Rf7+ $18 Kg6 {...Rxd5! is the strong
threat.} 41. f5+ Kh6 42. Ke5 Rd8 {[#]} 43. Ke6 a5 (43... b5 $142 44. Re7 a5)
44. Rb7 {White is clearly winning.} Rf8 45. Ke7 Rxf5 46. Rxb6+ ({Worse is} 46.
Rxb8 Rxd5 47. Rxb6+ Kh5 $11) 46... Kg5 47. Ba8 Re5+ 48. Kd8 {Weighted Error
Value: White=0.06/Black=0.24} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.50"]
[White "Vokhidov, Shamsiddin"]
[Black "Sethuraman, S.P.."]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2521"]
[BlackElo "2620"]
[Annotator "TA"]
[PlyCount "139"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,139,9,12,15,17,21,23,7,25,12,20,12,14,25,20,31,34,28,25,0,0,0,0,0,0,0,
0,0,0,-17,0,0,0,-10,0,-12,0,3,3,0,0,0,0,0,17,0,-6,-16,-16,-16,0,0,35,0,0,0,60,
61,51,0,2,0,0,0,9,9,66,0,4,-17,-20,-12,-12,-12,-12,-11,-13,-40,-32,-31,-21,-39,
0,-30,-4,-31,-4,-5,-8,-8,-5,-5,-7,-109,0,0,0,-76,-47,-62,-49,-45,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7
4. d4 cxd4 5. Nxd4 Ngf6 6. Bd3 {B51: Sicilian: Moscow Variation (3 Bb5+)
without 3...Bd7.} Nc5 7. Nc3 {[#]} g6 $146 ({Predecessor:} 7... a6 8. O-O g6 9.
Nb3 Nxd3 10. cxd3 Bg7 11. a4 Bg4 12. f3 Qb6+ 13. d4 Be6 {1/2-1/2 (32) Tari,A 
(2625)-Duda,J (2743) Wijk aan Zee 2021}) 8. f3 {White has an edge.} Bg7 9. Be3
O-O 10. Be2 a6 11. O-O e6 12. Qd2 b6 13. Rfd1 Qc7 14. Nb3 Rd8 15. e5 {[#]
Threatens to win with Nxc5.} Ne8 16. Nxc5 bxc5 17. exd6 $1 Rxd6 18. Qe1 Bb7 19.
Qf2 c4 20. Bc5 Rxd1+ 21. Rxd1 Be5 22. g3 (22. Bxc4 $2 Bxc3 23. Bxe6 (23. bxc3
$2 Rc8 $19) 23... fxe6 $19) 22... Nd6 23. Bb6 Qc6 24. Bd4 Bxd4 25. Qxd4 Nf5 26.
Qf2 Qc7 27. Bf1 Rb8 28. Ne4 Bxe4 29. fxe4 Nd6 30. Qd4 Rd8 31. Qe5 Qb6+ 32. Kg2
Rd7 (32... Nb5 $11 33. Rxd8+ Qxd8) 33. Qd4 $14 Qc6 34. Kg1 {And now e5 would
win.} Rd8 $1 35. Qe5 Kf8 36. Qd4 ({Much weaker is} 36. Qh8+ Ke7 $17) 36... Ke8
37. c3 Qb5 (37... Qxe4 $11 38. Qxe4 (38. Qh8+ Ke7 $17) 38... Nxe4 39. Rxd8+
Kxd8) 38. b3 ({Weaker is} 38. Qh8+ Ke7 $17) (38. b4 $14) 38... Qg5 39. bxc4 Nb7
40. Qh8+ {[%mdl 64] [#] Double Attack} Ke7 41. Rxd8 Qe3+ {[%mdl 64] Double
Attack} 42. Kg2 Qxe4+ 43. Kg1 (43. Kf2 {feels hotter.} Nxd8 44. Qxh7 Qc2+ 45.
Be2 Qxc3 46. Qh4+) 43... Nxd8 44. Qxh7 Qe3+ 45. Kg2 Nc6 {[%mdl 1024] Black has
compensation.} 46. Qh4+ g5 47. Qg4 f5 ({Reject} 47... Qxc3 $6 48. Qxg5+ f6 49.
Qg7+ Ke8 50. Kh3 $16) 48. Qf3 Qd2+ 49. Qf2 Qxc3 50. Qc5+ Kd7 51. Kg1 (51. h3
$11) 51... Nd4 ({Black should play} 51... a5 $17) 52. Qa7+ $11 Ke8 53. Qb8+ (
53. Qxa6 $11 {remains equal.} Qe3+ 54. Kg2) 53... Kf7 54. Qc7+ Kf6 $1 {
Strongly threatening ...Nf3+.} 55. Qd6 Qe3+ (55... Qd2 $5 {[%cal Rd4f3]} 56.
Qf8+ Ke5 57. Qb8+ Ke4 58. Qb7+ Ke3 $17) 56. Kh1 {The position is equal.} Qe4+
57. Kg1 Qe3+ 58. Kh1 Kg6 59. Qd8 Qe4+ (59... f4 {keeps more tension.} 60. Qg8+
Kf5 61. Qh7+ Ke5 62. Qg7+ Kd6) 60. Kg1 Qe3+ (60... Nf3+ {is interesting.} 61.
Kf2 Qe1+ 62. Kg2 Ne5 63. Qg8+ Kf6) 61. Kh1 g4 (61... Qf2 {is more complex.} 62.
Qg8+ Kf6 63. Qf8+ Ke5 64. Qb8+ Ke4) 62. Qg8+ Kf6 63. Qf8+ (63. Qh8+ {with more
complications.} Ke7 64. Qg7+ Kd6 65. Qf8+ Ke5 66. Qg7+) 63... Ke5 64. Qb8+ Ke4
{White should prevent ...Qc1!} 65. Qb7+ Ke5 66. Qb8+ Kf6 67. Qf8+ Kg6 68. Qg8+
Kf6 69. Qf8+ Kg6 {( -> ...Qe4+)} 70. Qg8+ {Weighted Error Value: White=0.12/
Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.51"]
[White "Jumabayev, Rinat"]
[Black "Morovic Fernandez, Ivan"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2658"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,89,8,28,4,11,-5,12,0,0,-5,-15,0,0,0,0,0,14,0,0,0,3,11,14,0,12,17,14,
11,19,16,30,19,33,27,27,0,0,0,0,0,0,-27,-13,-69,-62,-58,-50,-258,-11,-6,-16,-8,
0,0,-6,-53,0,-40,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-11]} 1. c4 c6 2. d4 d5
3. e3 Nf6 4. Nf3 Bg4 5. h3 Bxf3 6. Qxf3 e6 7. Nc3 Nbd7 8. Qd1 {D11: Slav
Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4.} Bd6 9. Be2 O-O 10. O-O dxc4 11.
Bxc4 e5 12. dxe5 Nxe5 13. Be2 Qe7 14. Qc2 Rfe8 15. Bd2 {[#]} Ned7 $146 ({
Predecessor:} 15... Rad8 16. Ne4 Bc7 17. Nxf6+ Qxf6 18. Bc3 Qe7 19. Rfd1 Ng6
20. Bd4 a6 21. Bd3 Be5 {1/2-1/2 (49) Zhao,X (2514)-Muzychuk,A (2545) Beijing
2014}) 16. Rad1 Nc5 17. Bc1 Rad8 18. Bf3 h5 19. h4 g6 20. g3 a5 21. Ne2 Be5 22.
Kg2 Ne6 23. Bd2 Qc5 24. Qb3 Rd7 25. Nf4 Bxf4 26. gxf4 Qf5 27. Bc1 {And now
Rxd7 would win.} Nc5 28. Qc4 (28. Qc3 $11) 28... Nd3 $36 {[%mdl 2048] Black
has some pressure.} 29. b3 Red8 30. e4 $2 {[#]} (30. Be2 $1 $15) 30... Qc5 $2 (
{Better is} 30... Nxf4+ $19 31. Kg1 Qe5 32. Rxd7 Rxd7) 31. Qxc5 $11 Nxc5 32. e5
Nd5 33. f5 gxf5 34. Bxh5 Ne6 35. Rg1 Kh7 36. Kh2 {The position is equal.} Ndf4
37. Rxd7 Rxd7 38. Bxf4 Nxf4 {[%mdl 4096] Endgame KRB-KRN} 39. Rg5 Kh6 40. Bf3
Rd3 41. Kg3 Ne2+ 42. Kg2 Nf4+ 43. Kg3 Ne2+ 44. Kg2 Nf4+ 45. Kf1 {Weighted
Error Value: White=0.15/Black=0.16} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.52"]
[White "Adly, Ahmed"]
[Black "Meshkovs, Nikita"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2602"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,85,0,-1,44,32,42,43,57,8,3,0,0,0,0,4,-3,-6,-6,-64,-66,-70,-72,-93,0,
0,0,0,0,0,12,11,12,28,19,2,45,0,0,0,0,0,0,0,37,37,37,50,37,47,42,45,47,37,262,
259,364,169,492,472,519,520,497,488,2353,1978,29973,29972,29988,29989,29991,
29992,29992,29993,29993,29994]} 1. d4 Nf6 2. Nf3 e6 3. g3 b5 4. Bg2 Bb7 5. O-O
c5 6. a4 b4 7. c3 d5 {A46: 1 d4 Nf6 2 Nf3 e6: Torre, London and Colle Systems.}
8. a5 bxc3 9. Nxc3 Nbd7 {White is slightly better.} 10. Qa4 Rc8 11. Ne5 {[#]}
cxd4 $146 ({Predecessor:} 11... a6 12. e4 dxe4 13. Bg5 h6 14. Bxf6 gxf6 15.
Nxd7 Qxd7 16. Nxe4 Qxa4 17. Rxa4 Rb8 {1/2-1/2 (33) Istratescu,A (2651)
-Iordachescu,V (2582) Haguenau 2013}) 12. Nb5 a6 13. Na7 Ra8 14. Nac6 $132 {
[%mdl 2112] Double Attack. White is not keeping still} Qc7 {Black wants to
play ...Nc5.} 15. Bf4 (15. Nxd7 $11 Qxd7 16. Nxd4) 15... Nc5 $15 16. Qc2 Bxc6
17. Nd3 {[#]} Qc8 (17... Qa7 $1 $17 18. b4 {[#]} Ba4 $1 {[%mdl 512]} 19. Rxa4
Nxa4 20. Qxa4+ Qd7) 18. Nxc5 $11 Bb5 19. b4 {[%cal Bb2b4,Bb4c5,Bc5c6,Bc6c7]
[%mdl 32]} Nd7 {[%cal Rd7c5]} 20. Rfc1 Nxc5 21. bxc5 Be7 22. Be5 O-O 23. c6 Qe8
24. c7 Rc8 25. Bxd4 Bd6 26. Bb6 f5 27. e3 Bc4 (27... Bxc7 $5 28. Bxc7 Rf7 $11)
28. Bf1 Bxc7 29. Bxc4 Bxb6 30. axb6 Rxc4 31. Qa2 Qc6 32. Rcb1 Qd6 $2 {Loses
the game.} (32... Rb8 $14) 33. Qxa6 $18 {aiming for b7.} Rc6 (33... Rcc8 $142
34. b7 {[%mdl 64] Discovered Attack} Qxa6 35. Rxa6 Rb8 36. Rxe6 Rf7) 34. Qa7 (
34. Qb7 $142 Rcc8 35. Ra7) 34... Rcc8 $2 (34... Rb8 {is a better chance.}) 35.
Rc1 {Black must now prevent Rxc8.} Rb8 36. Rc7 Qe5 {intending ...Rxb6.} 37.
Rac1 d4 (37... f4 $142 38. gxf4 Qb2) 38. exd4 Qxd4 39. Rd7 {White mates.} Qe5
40. Rcc7 Kh8 41. Rxg7 Qe1+ 42. Kg2 Qe4+ 43. Kh3 {Weighted Error Value: White=0.
10/Black=0.46} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.53"]
[White "Budisavljevic, Luka"]
[Black "Gretarsson, Hjorvar Steinn"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "2508"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,70,14,22,14,11,15,28,32,36,27,29,29,36,7,20,29,29,0,0,0,0,0,6,-60,-53,
-62,-59,-69,-62,-87,-72,-126,-125,-122,-97,-91,-96,-139,-131,-231,-230,-223,
-225,-329,-289,-356,-381,-356,-320,-331,-325,-330,-329,-317,-315,-725,-706,
-843,-859,-1291,-1266,-1372,-1323]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d6 5.
e3 O-O 6. Bd3 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} c5 7. dxc5 dxc5
8. a3 {White has an edge.} Bxc3+ 9. Qxc3 Nc6 10. Ne2 e5 11. Ng3 {[#]} Be6 $146
({Predecessor:} 11... Qe7 12. Qc2 Re8 13. Ne4 Nxe4 14. Bxe4 g6 15. Bd2 Be6 16.
g3 Rad8 17. O-O Bxc4 18. Qxc4 Rxd2 19. Bxc6 bxc6 {0-1 (39) Kudrnac,V-Kout,Z
Czech Republic 1996}) 12. O-O a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 13. b3 a4 14.
Bb2 Qa5 15. Qc2 Rfd8 16. Rac1 (16. Bc3 $11 Qa6 17. Be2) 16... axb3 $15 17. Qxb3
b5 $1 {[%cal Bb7b5,Bb5c4][%mdl 32]} 18. Qc2 bxc4 19. Be4 {[#] Black continues
to play with concentration.} Rd2 $1 20. Qc3 (20. Qb1 $142 Rb8 21. Bc3) 20...
Nxe4 $17 21. Nxe4 Qxc3 22. Bxc3 Rd5 23. Bb2 Bf5 $36 {[%mdl 2048] Black is
really pushing.} 24. Ng3 (24. f3 $17) 24... Bd3 $19 25. Rfd1 Rdd8 26. Nf1 (26.
f3 {was called for.}) 26... Rdb8 27. Ba1 Rxa3 28. Nd2 Ra4 29. Bc3 f6 30. Ra1
Rxa1 31. Rxa1 Nb4 {[#] ...Nd5 is the strong threat.} 32. e4 (32. g4) 32... Nc2
{Black is clearly winning.} 33. Ra5 Nd4 34. Kh1 Nb3 35. Nxb3 Rxb3 {Weighted
Error Value: White=0.59/Black=0.03} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.03"]
[Round "7.54"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Miezis, Normunds"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2484"]
[BlackElo "2467"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,132,33,0,0,0,0,-14,0,0,0,0,31,28,25,36,108,100,141,137,130,143,170,
170,218,218,232,133,193,192,391,379,362,371,683,688,645,646,725,728,765,736,
744,784,754,768,759,750,750,693,1002,866,726,487,462,450,411,210,258,214,325,
45,79,0,0,-63,-54,-99,-91,-100,-93,-90,-93,-100,-92,-246,-234,-232,-200,-218,
-223,-223,-208,-218,-188,-210,-203,-181,-112,-281,-283,-247,-225,-214,-137,
-195,-193,-256,-264,-295,-295,-302,-289,-316,-298,-510,-493,-555,-553,-552,
-536,-752,-559,-566,-559,-551,-543,-530,-516,-515,-515,-598,-581]} 1. e4 c5 2.
Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Nc2 {7.Qd3 is a critical
line.} Bxc3+ {B41: Sicilian: Kan Variation: 5 c4.} 8. bxc3 Qa5 9. Qd4 Nc6 {
The position is equal.} 10. Qe3 O-O 11. Ba3 Rd8 (11... d6 $5) 12. Bd6 $1 {[#]}
Ne8 $146 ({Predecessor:} 12... b5 13. Be2 bxc4 14. O-O Ne8 15. Bc5 Rb8 16. Bxc4
d6 17. Ba3 d5 18. exd5 exd5 {1-0 (61) Rahman,S (2141)-Abdyjapar,A (2391) Dhaka
2021}) 13. Bc5 {Strongly threatening Bb6.} Qa4 (13... Nf6 $1 $14) 14. Bd3 $1
$16 d6 15. Bb6 Rd7 16. f4 e5 17. f5 Re7 {and if ...Bxf5 works, Black does fine.
} 18. O-O Nf6 19. Qg3 ({Better is} 19. Qg5 $18) 19... Re8 (19... Nb8 $16) 20.
Be3 $18 {And now Bh6 would win.} Kf8 $2 (20... Kh8) 21. Qh4 Qa5 22. g4 h5 $2 (
22... Kg8 23. Bh6 Nd7) 23. g5 Ng8 24. Qxh5 f6 25. Rf3 Nd8 26. Nb4 Nf7 27. Nd5
Bd7 28. Rg3 Bc6 29. Bb6 Qa3 30. Nc7 fxg5 31. Ne6+ {[%mdl 64] Double Attack} Ke7
32. Nxg5 {[%csl Gg5][%cal Rh5f7]} Rf8 33. c5 Nf6 34. Qe2 (34. Qg6 $142 d5 35.
Bf1) 34... Qxc3 35. Rd1 Nxg5 (35... Ba4 $142) 36. Rxg5 $2 (36. cxd6+ $18 Ke8
37. Rxg5) 36... d5 $1 $14 {[#]} 37. Rxg7+ (37. Bc2 $1 $16 {aiming for exd5.}
Rf7 38. exd5 Nxd5 39. Rg3) 37... Rf7 $11 38. Rg3 (38. Rg6 $11) 38... Qd4+ $15
39. Kf1 Nxe4 40. Bxe4 Qxe4 41. Qxe4 dxe4 42. Rg5 Raf8 43. Kg2 $2 (43. Ke1 $17)
43... Rxf5 $19 44. Rxf5 Rxf5 {[%mdl 4096] Endgame KRB-KRB} 45. Kg3 e3 46. Re1
Rf3+ 47. Kg4 e4 48. h4 {[#]} Kf6 $1 {[%cal Rf6g6] Hoping for ...Kg6.} 49. Bd8+
Ke5 (49... Kg6 $19 {[%cal Rc6d7]} 50. h5+ Kh7) 50. h5 $2 (50. Bc7+ $17 Kf6 51.
Bd8+ Kg7 52. Kg5) 50... Bd7+ 51. Kg5 Rg3+ 52. Kh6 {Bc7+ is the strong threat.}
Rg8 53. Bh4 (53. Ba5 $17) 53... Bf5 54. Rxe3 (54. Be7 $142) 54... Kf4 55. Re1
Rh8+ 56. Kg7 Rxh5 57. Rf1+ Ke3 58. Be7 (58. Bf6) 58... Bd7 {Black is clearly
winning.} 59. Rb1 Bc6 60. Kg6 Rd5 61. Bg5+ Kf3 62. Rb3+ Kg4 63. Be7 Rd3 64. Rb4
Ra3 65. Kf6 Rxa2 66. Bd6 Kf3 {Never resign too early!  Weighted Error Value:
White=0.44/Black=0.26} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.1"]
[White "Firouzja, Alireza"]
[Black "Sasikiran, Krishnan"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2770"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,85,17,34,1,3,10,10,-41,18,16,46,46,86,75,122,133,139,91,133,150,293,
291,287,292,274,294,279,281,295,285,293,276,293,297,376,379,371,356,351,341,
318,276,467,463,532,514,602,581,600,606,564,536,631,631,1943,1982,2000,1875,
1718,1599,1570,1056,928,961,29974,29975,29975,29976,29976,29977,29986,29977]} 
1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. O-O d5 7. exd5 Nxd5 8.
Re1 Bg4 9. Nbd2 {[%cal Bb1d2,Bd2e4,Be4g5,Bg5e6][%mdl 32] C54: Giuoco Piano: 4
c3 Nf6, main lines with 5 d4 and 5 d3.} Nb6 10. h3 Bh5 11. Bb3 $1 {[%mdl 4] is
now more promising than 11.Bb5.} ({Better is} 11. b4 $11 Be7 12. g4) 11... Kh8
(11... Qxd3 $15 12. Bc2 Bxf3 13. Nxf3 Qxd1 14. Bxd1 Rae8) 12. Ne4 $11 Nd7 13.
Bd5 {[#]} f5 $146 {Hoping for ...Bxf3.} ({Predecessor:} 13... Bb6 14. Ng3 Bxf3
15. Qxf3 f5 16. d4 f4 17. Ne4 Qh4 18. Nd2 exd4 19. Nc4 Rad8 20. Bxc6 bxc6 {
1-0 (47) Vachier Lagrave,M (2751)-Swiercz,D (2655) Saint Louis 2021}) 14. Neg5
h6 15. Ne6 {[%mdl 64] Double Attack} Qf6 16. Nxf8 Rxf8 {[#]} 17. d4 $1 {
[%cal Rd4c5]} e4 (17... Bb6 $16) 18. dxc5 $18 Nde5 {[#]} 19. Nxe5 {[%mdl 64]
Discovered Attack} ({Don't play} 19. Bxc6 $6 Nxf3+ 20. gxf3 Bxf3 $18) 19...
Bxd1 20. Nd7 {[%mdl 64] Double Attack} Qd8 21. Bxc6 ({And not} 21. Nxf8 Qxd5
22. Ng6+ Kh7 $14) 21... Re8 22. Rxd1 bxc6 23. Bf4 Qh4 24. Bxc7 e3 25. fxe3 Rxe3
26. Rd4 Qe7 27. Bf4 Re2 28. b4 Qe8 $2 (28... g5 29. Be5+ Rxe5) 29. Rf1 Qe6 30.
Rf2 Rxf2 31. Kxf2 Qxa2+ 32. Bd2 Qe6 33. c4 a6 34. Bf4 Qe7 35. b5 axb5 36. cxb5
Qe6 37. b6 Qb3 38. Kg1 g5 39. Bd2 g4 40. Rb4 {White mates.} Qd1+ 41. Kh2 g3+
42. Kxg3 f4+ 43. Kh2 {Weighted Error Value: White=0.10/Black=0.39} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.2"]
[White "Vachier-Lagrave, Maxime"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2763"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,95,46,44,11,30,10,28,29,19,-14,-22,-15,-14,-10,-16,-12,0,0,0,0,0,0,0,
0,2,0,6,8,11,5,13,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,
0,0,0,0,0,0,0,0,0,0,0,0,0,256,241,258,157,148,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6
4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. a4 Rb8 8. c3 d6 9. d4 Bb6 10. a5 {C78: Ruy
Lopez: Archangelsk and Möller Defences.} Ba7 (10... Bxa5 $2 11. dxe5 dxe5 12.
Qxd8+ Kxd8 13. Bd5 $18 (13. Bxf7 Bb6 $16)) 11. h3 Bb7 12. Be3 {Hoping for d5.
White has an edge.} Nxe4 13. Nbd2 {[#]} exd4 $146 ({Predecessor:} 13... Nxd2
14. Qxd2 O-O 15. dxe5 dxe5 16. Qxd8 Rbxd8 17. Bxa7 Nxa7 18. Nxe5 Bd5 19. Bc2
Nc6 20. Nxc6 Bxc6 {1-0 (52) Carlsen,M (2855)-Firouzja,A (2754) Stavanger 2021})
14. cxd4 Nxd2 15. Qxd2 O-O 16. Rfe1 Qd7 17. d5 Bxe3 18. Qxe3 Ne5 19. Nxe5 dxe5
20. Qxe5 Rbd8 21. Rac1 Rfe8 22. Qd4 {Strongly threatening Rxe8+.} Rxe1+ 23.
Rxe1 Qd6 ({Don't blunder} 23... Bxd5 $2 24. Qxd5 Qxd5 25. Bxd5 $18) 24. Qe3 (
24. Qa7 {is interesting.} Ba8 25. Rc1 Rc8 26. h4 h6 27. g3) 24... h6 ({Don't
go for} 24... Bxd5 $2 25. Bxd5 g6 26. Bb3 $18) 25. Rd1 Bc8 26. Rc1 {Black must
now prevent Rc6.} Bd7 27. Qg3 Qxg3 28. fxg3 $11 {[%mdl 4096] Endgame KRB-KRB}
Rc8 29. Rf1 Kf8 30. d6 f6 31. Rd1 cxd6 32. Rxd6 Rc1+ 33. Kf2 Bc6 34. Re6 b4 35.
Ke3 Bb5 (35... Ba4 $5 36. Bd5 $8 Rc5 $11) 36. Kd4 Ra1 37. Kc5 Rxa5 38. Rb6 Ke7
(38... Bf1+ {seems wilder.} 39. Kd6 Rb5 40. Rxa6 Bxg2 41. Ra7 g5) 39. Rb7+ Bd7+
40. Kxb4 Re5 41. Ba4 Re4+ 42. Kb3 Rxa4 43. Rxd7+ $1 {[%mdl 64] [#] Remove
Defender} Kxd7 44. Kxa4 {aiming for Ka5. KP-KP} Kc6 45. Ka5 Kb7 {[%mdl 8192]} (
45... Kc5 $11) 46. g4 $18 Ka7 47. h4 Kb7 48. h5 {Weighted Error Value: White=0.
06/Black=0.14} ({White should try} 48. Kb4 $16 Kb6 49. Kc4) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.3"]
[White "Grandelius, Nils"]
[Black "Caruana, Fabiano"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2662"]
[BlackElo "2800"]
[Annotator "TA"]
[PlyCount "136"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,136,19,18,0,12,7,2,12,25,0,0,0,40,39,38,34,42,9,36,32,25,0,0,0,0,0,0,
-6,-12,-6,0,0,0,-6,0,-3,10,-16,0,-10,14,-18,-12,-14,-10,-24,-25,-20,-21,-24,
-22,-33,-32,-38,-17,-85,-91,-89,-75,-72,-69,-112,-114,-101,-66,-166,-162,-201,
-177,-188,-170,-300,-258,-258,-258,-258,-258,-249,-54,-49,0,-247,-248,-248,
-248,-395,-96,-71,0,-387,-150,-228,-225,-656,-234,-234,-209,-194,-165,-194,
-194,-194,-183,-183,-183,-183,-183,-224,-216,-231,-209,-183,-172,-156,-137,
-354,-341,-316,-116,-316,-315]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5.
Re1 Ng6 6. c3 a6 7. Bf1 Be7 8. d4 cxd4 9. cxd4 d5 10. exd5 {B30: Sicilian: 2...
Nc6 3 Bb5, lines without ...g6.} exd5 11. Nc3 {[%cal Bb1c3,Bc3a4,Ba4c5][%mdl
32]} O-O 12. Be3 {The position is equal.} Be6 {[#]} 13. Na4 $146 ({Predecessor:
} 13. Rc1 Na5 14. Qd2 h6 15. Bd3 Nc4 16. Qc2 Nh4 17. Nxh4 Nxe3 18. Rxe3 Bxh4
19. Rd1 {1/2-1/2 (32) Becerra Rivero,J (2547)-Shabalov,A (2624) Connecticut
2004}) 13... Bb4 14. Bd2 Qd6 15. Bxb4 Qxb4 16. h3 Rae8 17. Nc5 Bc8 (17... Qxb2
$6 18. Re3 $16) 18. Rxe8 Rxe8 19. Qb3 (19. a3 {keeps more tension.} Qb6 20. Qc2
Nf4 21. Rc1 Na7 22. Qc3) 19... Qxb3 20. Nxb3 f6 21. Rc1 Nge7 22. a3 Kf7 23. Bd3
h6 24. Kf1 g5 25. Ng1 h5 26. Ne2 h4 27. Nc3 f5 28. Ne2 Kf6 29. Nd2 Nd8 30. Rc3
Bd7 31. Nb3 (31. Rc7 $2 Bc6 $19) 31... Ne6 32. Nc5 Nxc5 33. Rxc5 Ke6 34. Rc3
Kd6 35. Rb3 b5 36. Rc3 (36. a4 $11 {remains equal.}) 36... Nc6 $17 37. b4 f4 $1
38. Bg6 Ra8 39. Ke1 a5 40. bxa5 Nxa5 41. Ng1 (41. g3 $1 $15) 41... Nc4 $19 42.
Nf3 Nxa3 43. Nxg5 Nc4 $1 {Strongly threatening ...Ra1+.} 44. Nf7+ (44. Bd3 $142
) 44... Ke7 {White must now prevent ...b4.} 45. Ne5 b4 46. Rb3 Ra1+ 47. Ke2
Ra2+ $2 (47... Ba4 $1 $19 {[%cal Ra4b3]} 48. Rxb4 Bd1+ 49. Ke1 Nxe5) 48. Ke1
$15 Ra1+ $2 (48... Nxe5 $15 49. dxe5 Ra6) 49. Ke2 $19 Ba4 $1 50. Rxb4 Bd1+ 51.
Ke1 (51. Kf1 $142) 51... Bc2+ $2 (51... f3 $19 {has better winning chances.}
52. gxf3 (52. Rb7+ $2 Kf6 $19) 52... Nxe5) 52. Ke2 $17 Bd1+ {[%mdl 8192]} (
52... f3+ $1 $17 53. Kxf3 (53. gxf3 Bd1+ 54. Ke1 Nxe5 $17) 53... Nxe5+ 54. dxe5
Bxg6 55. Rxh4 Be4+ 56. Kg3 Ke6) 53. Ke1 $19 Nxe5 $2 (53... f3 $19 {and Black
stays clearly on top. ( -> ...Bc2+)} 54. gxf3 (54. Rb7+ $2 Kf6 $19) 54... Nxe5)
54. Rb1 {[#]} (54. dxe5 $17 f3 55. gxf3 Bc2+ {[%mdl 64] Discovered Attack} 56.
Ke2 Bxg6 57. Rxh4) 54... f3 $1 {[%cal Rf3g2][%mdl 512]} 55. gxf3 (55. Rxa1 $2 {
loses.} fxg2 56. Rxd1 g1=Q+ $19) (55. g3 hxg3 56. fxg3 (56. Rxa1 $2 g2 $19)
56... f2+ 57. Kf1 Rxb1 58. Bxb1) (55. g3 hxg3) 55... Nxg6 $2 (55... Rxb1 56.
Bxb1 Bxf3 57. dxe5 Ke6) 56. Rxa1 Bxf3 57. Kd2 Be4 58. Ke3 Bf5 59. Rh1 Kf6 60.
Rh2 Nh8 61. f3 Ng6 62. Rh1 Be6 63. Rh2 Ne7 64. Kf4 Nf5 65. Rd2 Bd7 66. Rd1 $2 (
66. Kg4 $17 {was necessary.}) 66... Ng3 67. Rd2 {[#]} Nh5+ $1 ({Not} 67... Bxh3
68. Rh2 $17) 68. Ke3 {[#]} Kg5 $1 {Weighted Error Value: White=0.30/Black=0.33}
({Stronger than} 68... Bxh3 69. Rh2 $11) 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.4"]
[White "Vitiugov, Nikita"]
[Black "Ponkratov, Pavel"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2727"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,51,1,13,39,37,70,77,47,70,69,28,31,16,33,36,27,29,30,22,27,3,18,25,
76,41,112,119,142,125,285,285,291,284,284,279,300,297,533,549,547,550,525,435]
} 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nf3 Nc6 6. O-O f5 {A20: English
Opening: 1...e5.} (6... Nb6 {is more complex.} 7. b3 Bg4 8. Bb2 Qe7 9. Qc2 f6)
7. Nc3 Nxc3 8. bxc3 {[#]} Bd6 $146 {White is better.} ({Predecessor:} 8... e4
9. Ne1 Bc5 10. d3 Qe7 11. Qc2 exd3 12. exd3 O-O 13. d4 Bd6 14. Nd3 Kh8 {
1-0 (51) Pantsulaia,L (2553)-Ponkratov,P (2623) Chess.com INT 2020}) 9. d4 e4
10. Ng5 h6 11. Nh3 O-O 12. f3 exf3 13. Bxf3 Na5 $1 14. c4 $36 {[%mdl 2048]
White has good play.} Be6 15. d5 Bf7 16. Qd3 c6 (16... Qf6 $11 17. Bd2 b6) 17.
Bd2 $16 Rc8 {[#]} (17... Bb4 $14) 18. Rac1 $1 cxd5 19. cxd5 Kh8 $2 {This costs
Black the game.} (19... Rxc1 $16 {was necessary.} 20. Rxc1 Be8) 20. Rxc8 $18 (
20. Qxf5 Nc4 $14) 20... Qxc8 21. Rc1 (21. Bxa5 Qc5+ 22. Kg2 Qxa5 $14) 21... Qd8
22. Nf4 (22. Qxf5 $6 Be8 $16) 22... b5 {intending ...Nc4.} 23. Qxf5 {[#]
Threatens to win with Be4.} ({Much less strong is} 23. Qxb5 $6 Qb6+ 24. Qxb6
axb6 $18) 23... Bxf4 $2 (23... Be8 24. Ng6+ Bxg6 25. Qxg6 Ba3 26. Bxa5 Qxa5)
24. Qxf4 {White is clearly winning.} ({Not} 24. gxf4 Nc4 $18) 24... Bxd5 25.
Bxa5 Qe8 26. Qd4 {[%mdl 64] Double Attack.  Weighted Error Value: White=0.02/
Black=0.30} ({Don't go for} 26. Bxd5 $2 Rxf4 27. gxf4 Qe3+ {[%mdl 64] Double
Attack} 28. Kg2 Qxc1 $19) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.5"]
[White "Howell, David W L"]
[Black "Esipenko, Andrey"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2658"]
[BlackElo "2720"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,125,8,8,15,12,14,13,16,12,16,24,17,29,8,14,0,14,-2,25,14,30,30,30,30,
30,0,41,0,21,0,51,0,0,-33,21,0,0,0,0,0,0,0,0,0,0,0,0,-22,-15,-170,-120,-123,
-127,-164,-146,-174,-105,-93,44,44,48,45,88,78,137,45,45,45,52,58,62,48,66,29,
121,92,103,114,110,113,105,94,194,143,143,143,143,153,153,153,153,153,328,318,
554,568,523,468,424,302,257,191,654,397,402,370,350,362,326,299,29977,29977,
29977,29978,29978,29979,5393,820]} 1. Nf3 d5 2. g3 b6 3. Bg2 Bb7 4. b3 Nf6 5.
Bb2 e6 6. c4 {A07: Réti Opening: New York and Capablanca Systems.} Bd6 7. cxd5
$5 {[%mdl 4] A promising side line.} exd5 8. O-O {The position is equal.} O-O
9. Nc3 a6 10. Rc1 Re8 11. e3 Nbd7 12. d4 Qe7 13. Rc2 $5 {[%mdl 4] [#] Leaves
trodden paths.} b5 $146 ({Predecessor:} 13... Ne4 14. Ne2 Rad8 15. Nf4 a5 16.
Qa1 a4 17. b4 c6 18. a3 Rc8 19. Rfc1 b5 {1-0 (73) Shchekachev,A (2532)
-Fontaine,Q (2367) Cappelle la Grande 2019}) 14. a4 b4 15. Ne2 a5 16. Nf4 Ne4
17. Ne5 Nb6 18. Nc6 Qf6 {White must now prevent ...Bxf4.} 19. Ne5 Qe7 $1 20.
Nc6 (20. Ned3 $14) 20... Qf8 21. Qg4 Bc8 ({Black should play} 21... f5 $15 22.
Qe2 Bxf4 23. gxf4 Ba6) 22. Qf3 (22. Qh5 {is more complex.} g6 23. Qd1 f6 24.
Nd3 Qf7 25. f3) 22... f6 23. Rfc1 Bd7 24. Qh5 g6 25. Qd1 Qf7 26. Bf1 Bxf4 27.
exf4 Re6 28. f3 Nd6 29. Re2 $2 (29. Ne5 $11 fxe5 30. dxe5) 29... Rxe2 30. Qxe2
Re8 31. Qc2 {[#]} Ndc4 {[%mdl 512]} 32. Na7 (32. Nxb4 Ne3) 32... Ra8 33. Nb5
$17 {[#]} Nxb2 (33... c6 $1 $17 {[%cal Rc6b5]} 34. bxc4 cxb5 35. cxb5 Qe6) 34.
Qxb2 $14 (34. Nxc7 Rc8 $1 $15) 34... c6 {[%cal Rc6b5]} 35. Nc7 {[%cal Rc7a8]}
Rc8 36. Na6 Bf5 (36... Re8 $142) 37. Nc5 (37. Rc5 $16) 37... Re8 38. Qd2 Qe7
39. Kf2 Kf7 40. h4 Bc8 41. Bd3 Kg7 (41... Nd7 $11 {remains equal.}) 42. f5 $1
$16 gxf5 (42... Bxf5 $2 43. Bxf5 gxf5 44. Nd3 $18) 43. Bf1 Qd6 {[#]} 44. Nd3 $1
{[%mdl 1024] White has strong compensation.} Bd7 45. Nf4 Qe7 (45... Ra8 $16)
46. Bd3 (46. Rc5 $18) 46... Nc8 47. Nh5+ Kg6 {[#]} 48. g4 {aiming for Qf4.} Qd6
{Hoping for ...Qh2+.} 49. Kg2 Rg8 50. Kh1 h6 $2 (50... Ne7 $16 {might work
better.} 51. Qe3 h6) 51. Re1 Ne7 $2 (51... Qf8 52. Nf4+ Kh7) 52. Qe3 $18 Re8 {
Black hopes to continue with ...Kh7.} 53. Rg1 {White wants to mate with gxf5+.}
Rg8 54. Rg2 ({Not} 54. Re1 Nc8 $18) 54... Kh7 55. Re2 Nc8 (55... Re8 56. g5
fxg5) 56. Kg2 Qf8 57. Ng3 Nd6 58. Qf4 Kg7 {If Black can now play ...fxg4 this
consolidates a bit.} 59. Kf1 ({But not} 59. Nxf5+ $6 Nxf5 60. Bxf5 Bxf5) 59...
fxg4 $2 (59... Kh8 $18 60. Nxf5 Nxf5) 60. Nh5+ Kh8 {[#]} 61. Re7 $3 {[%csl Gd3]
[%cal Re7h7][%mdl 512]} Bf5 62. Bxf5 Nxf5 63. Re6 {Never resign too early! 
Weighted Error Value: White=0.21/Black=0.41} (63. Rd7 $142 Ne3+ 64. Qxe3) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.6"]
[White "Najer, Evgeniy"]
[Black "Harikrishna, Pentala"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2654"]
[BlackElo "2719"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,83,8,4,16,12,18,10,20,17,20,18,15,25,0,27,30,33,32,41,30,35,20,22,8,
37,42,47,31,33,29,29,29,36,24,33,13,14,13,13,14,17,13,11,10,12,12,15,13,16,0,0,
0,0,0,11,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6.
Qc2 Bd6 7. b3 O-O 8. Be2 e5 9. cxd5 cxd5 10. Nb5 Bb4+ 11. Bd2 Bxd2+ 12. Nxd2 a6
13. dxe5 {D45: Semi-Slav: 5 e3.} Nxe5 14. Nd4 Bg4 15. Bxg4 Nfxg4 16. O-O Rc8 ({
Reject} 16... Qh4 $6 17. h3 $16) 17. Qf5 {[#] aiming for h3.} Re8 {[#]} ({
But not} 17... Qh4 $2 18. h3 $18) 18. h3 $146 ({Predecessor:} 18. N2f3 g6 19.
Qf4 Rc5 20. Nxe5 Nxe5 21. Rfd1 Qe7 22. Kf1 h5 23. h3 Rec8 24. Ne2 {1/2-1/2 (33)
Kozlowski,W (2421)-Neubauer,R (2422) ICCF email 2016}) 18... Nf6 (18... g6 $5 {
[%cal Rg6f5]} 19. Qb1 Nf6 $11) 19. Rac1 Nc6 20. N2f3 Qd6 21. Qb1 Ne4 22. Qb2
Qf6 23. Qa3 (23. Rc2 {with more complications.} Nb4 24. Rxc8 Rxc8 25. a3 Nc6
26. Rc1) 23... Qe7 (23... Nxd4 {is more complex.} 24. Nxd4 g6 25. Qb2 b6 26.
Rc2 Rc5) 24. Qxe7 Nxe7 25. Ne5 Nc5 26. Rfd1 f6 27. Nef3 Kf7 28. Kf1 Ne6 29. Ke2
(29. Rb1 {is interesting.} Nc5 30. Ne2 Ne4 31. Nfd4 h5 32. g3) 29... Rxc1 {
The position is equal.} 30. Rxc1 Rc8 31. Rxc8 Nxc8 32. Nxe6 Kxe6 $11 {[%mdl
4096] Endgame KN-KN} 33. Nd4+ Kd7 34. Kd3 g6 35. g4 Nd6 36. h4 a5 37. Ne2 Nf7
38. f4 Kd6 39. Ng3 Nh6 40. g5 fxg5 41. hxg5 Nf5 42. Nxf5+ {Weighted Error
Value: White=0.06/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.7"]
[White "Dubov, Daniil"]
[Black "Oparin, Grigoriy"]
[Result "0-1"]
[ECO "E07"]
[WhiteElo "2714"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,84,0,0,0,0,0,0,6,8,17,0,0,0,0,0,-2,-8,-14,-21,-22,-25,-13,-22,0,-12,
0,-32,0,0,33,22,78,79,69,79,60,0,0,-29,-22,-21,-23,-19,0,-8,0,-47,0,0,0,0,0,0,
0,0,37,41,34,0,0,0,0,0,0,0,0,-466,-450,-570,-562,-533,-514]} 1. Nf3 Nf6 2. d4
d5 3. c4 e6 4. Nc3 Nbd7 5. g3 Be7 6. Bg2 O-O 7. Ne5 c6 8. O-O Nxe5 {E07:
Closed Catalan: Main Line (5 Nf3 0-0 6 0-0 Nbd7).} 9. dxe5 Nd7 10. cxd5 cxd5 {
The position is equal.} 11. e4 dxe4 12. Bxe4 Nxe5 13. Qe2 {[#]} Nc6 $146 ({
Predecessor:} 13... Bf6 14. Rd1 Qa5 15. Bd2 Qb6 16. Be3 Qb4 17. Rac1 a6 18. Bf4
Qa5 19. Bd2 Qb6 {0-1 (51) Chelushkina,I (2261)-Tomin,K (1959) Vrnjacka Banja
2014}) 14. Be3 Nd4 15. Bxd4 $40 {[%mdl 128] White has some attack.} Qxd4 16.
Rfd1 Qb6 17. Rac1 g6 18. h4 Qa5 19. Bf3 Rb8 20. h5 Bg5 21. Rc2 Bf6 22. Ne4 {
[%mdl 1024] White has compensation.} Bg7 (22... Qe5 $11 {keeps the balance.})
23. Qe3 b6 24. h6 Bh8 25. Rc7 (25. Nd6 $1 $14) 25... Qe5 $11 26. Nd6 {Black
must now prevent Qd3.} (26. Rxa7 {is more complex.} Bb7 27. b4 f5 28. Nf6+ Bxf6
29. Qxe5 Bxe5 30. Rxb7 Rxb7 31. Bxb7 Rb8 32. Rd7) 26... Qxe3 27. fxe3 Bxb2 28.
Rxa7 Bf6 29. Ne4 Be5 30. Nd6 Bf6 31. Kf2 b5 32. Bc6 Be5 33. Nxb5 Rb6 34. Rc1
Ba6 35. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} Rd8 36. a5 Rxc6 {[%mdl 64] [#] Remove
Defender} 37. Rxc6 Bxb5 38. Rc5 Bb8 $1 {[%cal Rb8a7]} 39. Rb7 Ba6 {[%cal Ra6b7]
} 40. Rb6 {[%mdl 8192] [#]} (40. Rb3 $1 $11 Rd2+ 41. Ke1) 40... Ba7 $1 $19 {
[%mdl 64] Skewer. Black is clearly winning.} 41. Rc7 (41. Rcc6 Bxb6) 41... Bxb6
42. axb6 Rb8 {Weighted Error Value: White=0.26/Black=0.09} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.8"]
[White "Fedoseev, Vladimir"]
[Black "Anton Guijarro, David"]
[Result "0-1"]
[ECO "C84"]
[WhiteElo "2704"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "134"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,134,20,27,7,16,14,10,1,0,8,22,14,21,31,21,31,29,0,0,0,0,-19,-15,-14,
-18,-70,-79,-71,-61,-74,-66,-77,-63,-144,-128,-147,-122,-208,-193,-275,-247,
-235,-210,-272,-265,-270,-264,-409,-421,-388,-284,-316,-242,-277,-277,-289,
-244,-225,-253,-236,-240,-424,-206,-247,-235,-254,-252,-252,-243,-243,-243,
-222,-211,-195,-189,-265,-256,-266,-267,-417,-397,-443,-443,-435,-427,-429,
-372,-891,-891,-877,-847,-800,-753,-1143,-1127,-1106,-1131,-1125,-1048,-1061,
-975,-812,-946,-830,-743,-29961,-29965,-29964,-29966,-12829,-7238,-5624,-5437,
-29974,-29975,-29975,-29976,-29976,-29977,-29977,-29977,-29973,-29968]} 1. e4
e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 {7...d6
scores better than 7...0-0.} 8. a3 {C84: Closed Ruy Lopez: Unusual White 6th
moves.} Na5 9. Ba2 c5 10. Nc3 {The position is equal.} Be6 11. Nh4 c4 $5 {
[%mdl 4] An interesting side line.} 12. Nf5 Bxf5 13. exf5 d5 14. Bg5 O-O 15.
Qf3 e4 16. dxe4 dxe4 17. Qh3 {[#]} Re8 $5 $146 {[%mdl 8] An interesting
novelty.} ({Predecessor:} 17... Qc7 18. Rae1 Rfe8 19. Bb1 Rad8 20. Bxf6 Bxf6
21. Nxe4 Bxb2 22. f6 Qd7 23. Qg3 g6 {1/2-1/2 (39) Nepomniachtchi,I (2784)
-Carlsen,M (2862) chess24.com INT 2020}) 18. Rad1 Qc7 19. a4 (19. Qg3 $11 Qc6
20. Bxf6 Bxf6 21. Nd5) 19... Qc6 $15 20. axb5 axb5 21. Bb1 Nb7 {Black keeps a
firm grip on the game.} 22. Ne2 Nc5 23. Rd4 ({White should try} 23. b3 $15)
23... h6 $17 24. Be3 Nd5 25. Rfd1 (25. Nf4 $17 Nxe3 26. Qxe3) 25... Rad8 $19
26. Nf4 (26. R4d2 $142) 26... Nxe3 27. Qxe3 Rxd4 28. Rxd4 Bg5 29. g3 {[#]} Nd3
$1 {[%mdl 512]} 30. cxd3 (30. h4 $142 Bf6 31. Nd5 Bxd4 32. Qxd4) 30... exd3 31.
Qc1 {Threatens to win with Rxd3!} Qb6 32. Rd5 Bxf4 ({Less strong is} 32... Re2
33. Nxe2 Bxc1 34. Nxc1 $17) 33. gxf4 Re2 34. Qf1 Rxb2 35. Bxd3 cxd3 36. Rxd3 {
[%mdl 4096] Endgame KQR-KQR} Rc2 {Hoping for ...b4.} 37. h3 $2 (37. Re3) 37...
Rc5 (37... b4 $142 {White must now prevent ...b3.} 38. Rb3 Rc3) 38. Qd1 Rxf5
39. Rd6 {[#]} Qc7 40. Qd2 Qc4 41. Rd4 Qc6 42. Qd3 {[#]} Qg6+ 43. Kh1 Kh7 44.
Kh2 (44. Qc2 $142) 44... Rc5 45. Qxg6+ Kxg6 {KR-KR} 46. Rd7 (46. Re4 {was
worth a try.}) 46... Kf6 47. Rb7 Rf5 48. Kg3 Ke6 49. Kg4 g6 50. h4 $2 (50. Rb6+
Kd7 51. Kf3) 50... h5+ 51. Kf3 Kd6 52. Ke3 Kc5 53. Re7 Kc4 54. Re4+ Kc3 55. Ke2
b4 56. Kd1 Rd5+ 57. Kc1 b3 {( -> ...b2+)} 58. Re1 Rd2 59. f5 gxf5 60. f4 Rf2
61. Re3+ Kc4 62. Re7 Rxf4 63. Rxf7 Rf1+ {Black mates.} 64. Kb2 Rf2+ 65. Kb1 f4
66. Rc7+ Kd3 67. Rb7 b2 {Weighted Error Value: White=0.49/Black=0.11} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.9"]
[White "Sarana, Alexey"]
[Black "Yu, Yangyi"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2649"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,82,16,15,15,15,15,13,20,11,10,8,6,0,0,0,9,0,33,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,-22,-17,-21,-13,-15,-14,-13,-13,-14,-3,-9,-9,-9,-14,-30,-1,-14,0,-4,
-4,-15,0,0,0,-11,0,-10,-14,-14,-14,-8,-15,-13,0,-8,0,-32,0]} 1. d4 Nf6 2. c4 e6
3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bh4 Bf5 {D38: Queen's Gambit
Declined: Ragozin Defence (4 Nf3 Bb4).} 8. e3 Nbd7 9. Qb3 Ba5 {The position is
equal.} 10. Be2 c6 11. O-O ({But not} 11. Qxb7 Rb8 $17) 11... Qb6 12. Nd2 O-O
13. Rfc1 Rfe8 {[#]} 14. Bg3 $146 ({Predecessor:} 14. a3 Qxb3 15. Nxb3 Bd8 16.
Bxf6 Nxf6 17. Nc5 Rb8 18. b4 Be7 19. N3a4 g6 20. h3 {0-1 (65) Kovalenko,I 
(2644)-Donchenko,A (2657) Riga 2021}) 14... Re6 15. a3 (15. Qa4 {with more
complications.} Bb4 16. a3 Be7 17. b4 Qd8 18. Qd1) 15... Qxb3 16. Nxb3 Bd8 17.
Nd2 a5 18. Bd1 Re8 19. Bd6 Re6 20. Bg3 Be7 21. h3 Bf8 22. Bb3 Ree8 23. a4 Bb4
24. Bc2 Bxc2 25. Rxc2 Nf8 26. Nb3 Ne6 27. Na2 {[%cal Bc3a2,Ba2c1,Bc1d3,Bd3c5]
[%mdl 32]} Be7 28. Nac1 Ne4 29. Bh2 h5 30. g4 Bd6 (30... Nf6 {seems wilder.}
31. Be5 Nd7 32. Bg3 f6 33. Nd3 Kf7) 31. Nd3 g5 32. Bxd6 Nxd6 33. Nbc5 Kg7 34.
Kg2 Nxc5 35. Nxc5 Rh8 36. b4 hxg4 37. hxg4 axb4 {White must now prevent ...Nc4.
} 38. Rb1 Rh4 39. Kf3 Rh3+ 40. Ke2 Rh4 41. Kf3 Rh3+ {An uneventful encounter. 
Weighted Error Value: White=0.04/Black=0.04} (41... b6 $5 {[%cal Rb6c5]} 42.
Nd3 Nc4 43. Rxb4 Rh1 $15) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.10"]
[White "Maghsoodloo, Parham"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2701"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,70,18,14,12,24,16,18,16,25,23,20,20,21,22,22,30,35,21,29,28,38,28,32,
29,38,34,28,14,16,13,13,13,13,-7,0,-6,20,16,17,0,44,12,44,49,58,25,14,7,7,0,0,
0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 h6 5. cxd5 exd5
6. Bf4 {D35: Queen's Gambit Declined: Exchange Variation.} Bd6 7. Bxd6 Qxd6 8.
Qc2 O-O 9. e3 Qe7 10. Bd3 c6 11. O-O Nbd7 12. Rab1 a5 13. Na4 Re8 14. a3 {
[%cal Ba2a3,Ba3b4][%mdl 32]} Ne4 15. b4 {[#]} axb4 $146 ({Predecessor:} 15...
Qd6 16. Nc5 Nexc5 17. bxc5 Qc7 18. Bh7+ Kh8 19. Bf5 Nf6 20. Ne5 Bxf5 21. Qxf5 {
1-0 (85) Ernst,H-Grass,S Pizol 1997}) 16. axb4 b5 17. Nc5 Ndxc5 18. dxc5 Ng5 {
[#] Hoping for ...Nxf3+.} 19. Nd4 Bd7 20. Ra1 Qf6 21. Bf5 Ne6 22. Nb3 Red8 23.
h3 Re8 24. Rfd1 Qe7 25. Bg4 (25. Bxe6 $5 fxe6 26. e4 $11) 25... Ng5 26. Bxd7
Qxd7 27. Rxa8 (27. Nd4 {is interesting.} Rec8 28. Qc3 g6 29. Rxa8 Rxa8 30. Ra1)
27... Rxa8 28. e4 {The position is equal.} Re8 $1 {[%cal Re8e4]} 29. exd5 Nxh3+
$1 30. gxh3 Qxh3 31. Nd4 {[#] aiming for Qf5.} Qg4+ 32. Kf1 Qh3+ 33. Kg1 {
Qf5 is the strong threat.} Qg4+ 34. Kf1 {Black must now prevent Qb3.} Qh3+ 35.
Kg1 {Threatens to win with Qf5.} Qg4+ {Weighted Error Value: White=0.06/
Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.11"]
[White "Sevian, Samuel"]
[Black "Navara, David"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2654"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,97,23,15,11,8,10,13,22,8,26,24,20,0,0,0,0,0,0,0,52,25,14,-8,0,-8,-7,
-5,0,0,0,-6,0,0,43,21,144,140,141,78,76,83,72,75,73,73,77,73,86,70,92,56,63,63,
62,59,65,67,64,57,68,53,56,56,386,71,72,24,62,55,397,397,397,397,397,397,383,
379,462,446,763,752,726,704,5700,5828,5675,4590]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5
4. Nc3 Bb4 5. Qa4+ Nc6 6. e3 O-O 7. Bd2 dxc4 {D38: Queen's Gambit Declined:
Ragozin Defence (4 Nf3 Bb4).} 8. Bxc4 Bd6 9. Qc2 e5 {The position is equal.}
10. dxe5 Nxe5 11. Nxe5 Bxe5 12. O-O Qe7 13. f4 Bxc3 14. Bxc3 Qxe3+ 15. Kh1 Be6
{[#]} (15... Qb6 $11) 16. Rf3 $146 {[%mdl 1024] White has compensation.} ({
Predecessor:} 16. Bxf6 Bxc4 17. Qxc4 gxf6 18. Qxc7 Qb6 19. Qxb6 axb6 20. a3
Rfe8 {1/2-1/2 (20) Agrest,E (2583)-Laznicka,V (2598) Catalunya 2009}) 16... Qb6
17. Bd3 Bd5 18. Rg3 $36 {[%mdl 2048] aiming for Bxh7+! White fights for an
advantage.} h6 19. Be5 Rfe8 20. Bxc7 Qe6 21. Be5 Nh5 22. Re3 {Bh7+ is the
strong threat.} f6 {[#]} 23. Bg6 $1 Qg4 {[#]} (23... fxe5 $11 {remains equal.}
24. Bxh5 Rf8) 24. h3 $1 $16 {[%cal Rh3g4]} Qh4 {[#]} ({Wrong is} 24... Ng3+ $2
25. Kh2) 25. Qd1 Red8 26. Qxh5 Qxh5 27. Bxh5 fxe5 28. fxe5 {Black must now
prevent e6.} Be6 29. Bf3 a5 30. a3 Rd2 31. b3 Rad8 32. b4 axb4 33. axb4 Rb2 34.
Bxb7 Rxb4 35. Ra7 Rb3 36. Re1 Rb5 37. Be4 Bf7 $2 {[%mdl 8192]} (37... Rdb8 $14)
38. Bc6 $2 (38. e6 $18 {is the precise move to win.} Be8 39. e7) 38... Rb6 39.
Rc7 {Hoping for e6.} Be6 40. Be4 Rd7 $2 {[%mdl 8192]} (40... g5 $14) 41. Rc8+
$18 Kf7 42. Rf1+ Ke7 {[#]} 43. Bc6 Bc4 44. Rf4 Rd1+ 45. Kh2 {[%csl Gc6][%cal
Rc8e8] White is clearly winning.} Bf7 (45... Rxc6 $142 46. Rxc6 Be6) 46. Rc7+
Ke6 47. Rfxf7 {[%csl Gf7][%cal Rc7e7]} Rxc6 48. Rfe7+ ({Not} 48. Rxc6+ Kxf7 49.
Kg3 Rd4 $16) 48... Kd5 49. Rcd7+ {Weighted Error Value: White=0.16/Black=0.50}
1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.12"]
[White "Korobov, Anton"]
[Black "Volokitin, Andrei"]
[Result "1-0"]
[ECO "A47"]
[WhiteElo "2690"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,83,0,2,0,0,0,2,0,8,8,10,13,14,5,12,7,20,0,0,0,0,0,0,-11,18,17,1,10,16,
18,40,43,98,98,90,101,82,52,86,75,162,154,143,148,243,249,219,186,165,186,326,
321,529,491,317,58,29982,29983,29983,29984,29984,29985,29985,29986,29986,29987,
29987,29987,29988,29989,29989,29990,29990,29991,29991,29992]} 1. d4 Nf6 2. Nf3
e6 3. Bf4 b6 4. e3 Bb7 5. h3 d5 6. Bd3 {A47: 1 d4 Nf6 2 Nf3 b6: Torre, London
and Colle Systems.} Bd6 7. Nbd2 $5 {[%mdl 4] Exploring less charted territory.}
O-O 8. O-O {The position is equal.} Ne4 {[#]} 9. Bxd6 $146 ({Predecessor:} 9.
c3 Nd7 10. Qc2 Ndf6 11. Ne5 h6 12. f3 Nxd2 13. Qxd2 c5 14. Rae1 Qc7 15. Bh2 {
1-0 (32) Linares Napoles,O (2255)-Tarasova,V (2226) Chess.com INT 2021}) 9...
cxd6 10. c4 Nxd2 11. Nxd2 dxc4 12. Nxc4 Qe7 13. Qg4 Nc6 14. Rfc1 f5 15. Qd1
Rad8 16. a3 f4 17. Nd2 fxe3 18. fxe3 Qg5 19. Qe2 Ne7 {White should prevent ...
Bxg2!} 20. Rc7 Bxg2 21. Qxg2 $16 Qxe3+ 22. Kh1 Rf2 23. Nc4 (23. Qg4 $6 h5 $1
$15) 23... Qxd4 24. Qe4 $40 {[%mdl 128] White is out for blood.} Nf5 (24...
Qxe4+ $16 {was called for.} 25. Bxe4 d5) 25. Qxd4 (25. Qxe6+ $2 Kh8 $19) 25...
Nxd4 26. Rf1 $1 {[%cal Rf1f2]} (26. Rxa7 {is a self mate.} Nf3 27. Rxg7+ Kxg7
28. Rg1+ Kf6 29. Rg2 Rg8 $3 {[%mdl 512]} 30. Ne3 Rfxg2 31. Nxg2 Rg3 32. Bf5
exf5 33. h4 Rh3#) 26... Rdf8 (26... Rxf1+ $16 27. Bxf1 b5) 27. Rxf2 $18 Rxf2
28. Nxd6 g6 29. Rc4 (29. Rxa7 {gets mated.} Nf3 30. Ra8+ Kg7 31. Ra7+ Kh6 32.
Nf7+ Kh5 33. Ra5+ bxa5 34. Bxg6+ hxg6 35. Nh8 Rh2#) 29... e5 (29... Nf5 $142)
30. Rc7 Rxb2 $2 (30... b5 {was worth a try.} 31. Nxb5 Nf3) 31. Bc4+ Kh8 32. h4
$2 ({Resist} 32. Rxa7 $6 e4 $18) (32. Rf7 $18 {Threatens to win with Ne8.} Rb1+
33. Kg2 Rb2+ 34. Kf1 Rb1+ 35. Kf2 Rb2+ 36. Ke3 Nf5+ 37. Nxf5 gxf5 38. Be6)
32... Nf5 $2 {[%mdl 8192] Loses the game.} (32... e4 $14) 33. Nf7+ {[%mdl 64]
Double Attack. White mates.} Kg7 {[#]} 34. Ng5+ $1 Kf8 35. Nxh7+ Ke8 36. Nf6+
Kd8 {[#]} 37. Rd7+ $1 Kc8 38. Ba6+ Kb8 39. Nd5 {[%cal Rd7d8]} Rb1+ 40. Kh2 {
[%cal Rd7d8]} Rb2+ 41. Kg1 {[%cal Rd7d8]} Rb1+ 42. Kf2 {[%cal Rd7d8] Weighted
Error Value: White=0.17/Black=0.38} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.13"]
[White "Deac, Bogdan-Daniel"]
[Black "Kryvoruchko, Yuriy"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2643"]
[BlackElo "2686"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,53,11,13,5,14,14,7,0,22,22,20,24,22,31,30,17,17,17,14,22,13,14,12,14,
14,12,13,12,16,21,23,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5
Nf6 4. d3 Bc5 5. Nbd2 Nd4 6. Nxd4 {C65: Ruy Lopez: Berlin Defence (3...Nf6),
unusual lines and 4 0-0 Bc5.} Bxd4 7. c3 Bb6 8. d4 c6 9. dxe5 {[#] Black must
now prevent Be2.} cxb5 10. exf6 Qxf6 {[%csl Gb6][%cal Rf6f2]} 11. O-O O-O 12.
Nf3 d6 13. Re1 Bg4 14. Be3 {[#]} Bxf3 $146 ({Predecessor:} 14... b4 15. Bxb6
axb6 16. Qd4 Bxf3 17. Qxf6 gxf6 18. gxf3 bxc3 19. bxc3 Rfc8 20. Reb1 Rxc3 21.
Rxb6 Rxf3 22. Rxb7 {1/2-1/2 (31) Nakamura,H (2754)-Aronian,L (2752) Zagreb 2019
}) 15. Qxf3 Qxf3 16. gxf3 Bxe3 17. Rxe3 $11 {[%mdl 4096] Endgame KRR-KRR} f5
18. Rd1 fxe4 19. fxe4 Rf6 20. Red3 Raf8 {The position is equal.} 21. R1d2 Rf4
22. Rxd6 Rxe4 23. Rd7 Rf7 24. Rd8+ Rf8 25. R8d7 Rf7 26. Rd8+ Rf8 27. R8d7 {
Not much happened in this game.  Weighted Error Value: White=0.03/Black=0.01}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.14"]
[White "Predke, Alexandr"]
[Black "Tari, Aryan"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2666"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,125,14,18,19,18,12,13,15,15,16,16,17,13,16,19,17,20,32,26,19,31,29,
18,8,29,14,34,33,29,41,18,4,0,0,0,0,0,0,14,14,12,7,16,14,18,18,13,8,8,4,12,12,
22,22,22,15,16,16,108,8,8,0,106,107,102,114,150,158,246,245,245,245,245,245,
245,245,238,238,295,291,298,298,347,347,416,401,404,0,416,416,416,409,409,384,
384,384,384,377,540,383,675,383,7769,1550]} 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3
dxc4 5. Bg2 c5 6. O-O Nc6 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. Nbd2 c3 10. bxc3 {
[%cal Bb2c3,Bc3c4][%mdl 32]} O-O 11. Nb3 Be7 12. c4 Bd7 13. Bb2 {E04: Open
Catalan: 5 Nf3.} Rfc8 14. c5 Be8 15. Nfd2 {The position is equal.} b6 16. cxb6
axb6 17. Nc4 Rab8 18. Nd6 Bxd6 19. Rxd6 Na5 {[#]} 20. Nxa5 $146 ({Predecessor:
} 20. Rdd1 Nc4 21. Bd4 Bc6 22. Bf1 b5 23. Nd2 Bd5 24. a3 Ra8 25. Nxc4 Bxc4 26.
Bg2 {1/2-1/2 (41) Meier,G (2628)-Fridman,D (2608) Magdeburg 2021}) 20... bxa5
21. Be5 Rb4 22. Rad1 {[#] Threatens to win with Rd8.} h6 23. Bf3 {aiming for
Rd8.} Kh7 24. Rd8 Rbc4 25. a3 Nd5 26. Rxc8 Rxc8 27. Rb1 f6 28. Bd4 Nc3 29. Rb3
Nb5 30. Bb2 Nd6 31. Rd3 Nb5 32. Rd2 a4 33. h4 Rc5 34. Bg4 e5 35. f3 h5 36. Be6
Rc6 37. Bf5+ Bg6 38. Bd7 Rc5 39. Kf2 Nc3 40. Rd6 Nb1 (40... Rc7 $1 $11) 41. Rb6
(41. Rc6 $16 Rb5 42. Bc1) 41... Nc3 $11 42. Rd6 (42. Bxc3 $11 Rxc3 43. Bxa4)
42... Nb1 $16 43. Rc6 {White leaves nothing to chance now.} Rb5 44. Bc1 Rd5 45.
Be6 Rd1 (45... Rd8 $16 {is a better defense.} 46. f4 Be4) 46. Rc8 $18 Be8 47.
Be3 ({But not} 47. Rxe8 $6 Rxc1 48. Bf5+ g6 $16) 47... Bd7 {[#]} 48. Rd8 Bxe6
49. Rxd1 Nxa3 {[%mdl 4096] Endgame KRB-KBN} 50. Ra1 Nc4 51. Rxa4 Kg6 52. Bc5 f5
53. Ra6 Kf6 54. Ra7 Bf7 55. Ra6+ Be6 56. Bb4 g6 57. Bc3 Kf7 58. Ra7+ Kf8 59. e4
fxe4 60. fxe4 Bf7 (60... Ke8 {might work better.} 61. Ke2 Nd6) 61. Ke2 Ke8 $2 (
61... Be6 62. Kd3 Nb6 63. Bb4+ Kg8) 62. Kd3 {Hoping for Rxf7!} Be6 (62... Nb6
63. Bxe5 Nd7 64. Ra8+ Ke7) 63. Ra6 {Weighted Error Value: White=0.20/Black=0.20
} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.15"]
[White "Shevchenko, Kirill"]
[Black "Sargissian, Gabriel"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2632"]
[BlackElo "2664"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,61,2,9,12,12,2,1,29,6,8,25,37,7,20,0,20,0,30,7,15,3,25,13,18,0,0,0,4,
6,6,11,16,5,4,15,19,-12,0,-19,-27,-25]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4
Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4 Bb7 9. d3 d6 10. Bd2 Qd7 11. Nc3 {
[%cal Bb1c3,Bc3e2,Be2g3][%mdl 32]} Na5 $1 {[%mdl 4] is recently more
successful than 11...Nd4.} 12. Ba2 b4 {C88: Closed Ruy Lopez: Anti-Marshall
Systems.} 13. Ne2 c5 $1 14. Ng3 g6 {[#] The position is equal.} 15. c3 $146 ({
Predecessor:} 15. h3 Rfe8 16. Nf1 Bd8 17. Ne3 Bc6 18. Nh2 Kg7 19. Neg4 Nxg4 20.
Nxg4 Rb8 21. Ne3 {1/2-1/2 (29) Fernandez,J (2154)-Onder,E (2191) LSS email 2012
}) 15... bxc3 16. bxc3 Qc7 17. d4 Bc8 18. d5 c4 19. h3 Bd7 20. Rb1 Rfb8 21. Rb4
Nb3 22. Bxb3 cxb3 23. Qxb3 a5 24. Rxb8+ Rxb8 25. Qa3 Be8 26. Bg5 Kg7 27. Ra1 h6
28. Be3 Nd7 29. h4 Nb6 30. Qc1 h5 $1 31. Qc2 {An uneventful encounter. 
Weighted Error Value: White=0.10/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.16"]
[White "Sjugirov, Sanan"]
[Black "Petrosyan, Manuel"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2663"]
[BlackElo "2605"]
[Annotator "TA"]
[PlyCount "213"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,213,8,21,16,16,5,29,22,33,20,20,23,22,18,20,16,22,16,22,10,16,0,0,
-12,0,0,0,-3,8,6,23,0,8,0,28,33,52,48,70,80,77,73,79,77,75,77,101,83,86,82,143,
146,146,137,137,137,137,138,141,137,136,149,147,144,143,143,143,128,180,175,
164,124,177,163,176,149,181,146,146,138,150,107,110,50,27,24,25,33,38,35,49,0,
21,0,0,0,62,0,0,0,0,0,14,21,29,0,34,0,42,0,0,0,0,46,0,0,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4.
d3 Nf6 5. O-O d6 6. c3 a6 7. a4 h6 8. Re1 $1 {8.Re1 is better than 8.Nbd2. C54:
Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} O-O 9. Nbd2 Ba7 10. Nf1
{White has an edge.} Re8 11. Be3 Bxe3 12. Nxe3 Be6 13. Bxe6 Rxe6 14. b4 Re8 15.
Qb3 {[#]} Ne7 $146 ({Predecessor:} 15... Nh5 16. Nd5 Ne7 17. c4 c6 18. Ne3 Ng6
19. g3 Nf6 20. Rac1 Qd7 21. b5 Ne7 22. Rb1 c5 {1-0 (29) Juhasz,A (2176)-Bolyki,
I (1824) Budapest 2020}) 16. c4 a5 17. c5 Nc6 18. cxd6 Nxb4 19. dxc7 Qxc7 20.
Rac1 Qd7 21. Red1 Qe6 22. Nc4 Nd7 {[#]} 23. Nxa5 $1 Qxb3 (23... Rxa5 {seems
wilder.} 24. Qxb4 b6 25. Nd2 Rea8 26. Nc4 Rxa4 27. Qb5 Ra2) 24. Nxb3 Rxa4 25.
Rc7 Ra3 26. Rxb7 Rxb3 27. Rxd7 Rc3 28. g3 Na6 29. Rd5 Nb4 30. Rd6 Kf8 31. Rd7
Re7 (31... g5 $142) 32. Rd8+ $16 Re8 33. Rxe8+ Kxe8 34. Nxe5 {[%mdl 4096]
Endgame KRN-KRN} f6 {[#]} 35. Rb1 $1 Nxd3 36. Rb8+ Ke7 37. Rb7+ Kf8 {[#]} 38.
Ng6+ Kg8 {[#]} 39. f4 $1 Kh7 40. Nf8+ Kg8 (40... Kh8 $16 41. Ng6+ Kh7) 41. Ne6
$18 Nc5 42. Rxg7+ Kh8 43. Re7 {Nxc5 is the strong threat.} Nxe4 44. Nd4 Nd2 45.
Kg2 Rc5 46. Rd7 Ra5 47. Kh3 Nf1 48. Re7 (48. Rf7 $16) 48... Rh5+ $14 49. Kg4
Rxh2 50. Kf5 {Kg6 would kill now.} Rg2 51. Kxf6 Nxg3 52. Re5 (52. Kf7 {looks
sharper.} Ra2 53. Kg6 Ra8 54. Kxh6 Rd8 55. Re6) 52... Kg8 (52... Kh7 {is more
complex.} 53. Kf7 Rb2 54. Re7 h5 55. Kf8+ Kh6) 53. Re8+ Kh7 54. Re7+ ({White
should play} 54. f5 $11) 54... Kh8 55. Re8+ ({Better is} 55. Kf7 $1 $14 Rb2 56.
Kg6 Rb6+ 57. Ne6) 55... Kh7 $11 56. Ne6 {White threatens Nf8+ and mate.} (56.
Kf7 {with more complications.} Rd2 57. Ne6 Rd7+ 58. Kf6 Nh5+ 59. Ke5) 56...
Ne4+ $1 57. Ke5 Nf2 58. Re7+ Kg8 59. Rd7 Rg1 60. Kf6 {Threatening mate with
Rd8+.} (60. Kf5 {is interesting.} Rg2 61. Ra7 Rg1 62. Re7 Rg2 63. Rc7) 60...
Ne4+ (60... Ng4+ {keeps more tension.} 61. Ke7 Rb1 62. Rc7 h5 63. Rc5 Rb7+) 61.
Ke7 (61. Kf5 {seems wilder.} Nf2 62. Rc7 Rg3 63. Ra7 Rg1 64. Ra2) 61... Rf1 62.
Rd4 Ng5 63. Rd8+ $2 {[%mdl 8192]} (63. Nc7 $11) 63... Kh7 64. fxg5 hxg5 65.
Nxg5+ {KRN-KR. Mate.} Kg6 66. Rg8+ Kh5 67. Ne4 Ra1 68. Kf6 Kh4 69. Ke5 Kh3 70.
Nf2+ Kh2 71. Kf4 Ra4+ 72. Ne4 Kh3 73. Rg3+ Kh2 74. Rc3 Ra2 75. Kf3 Ra8 76. Rc6
Rf8+ 77. Kg4 Kg2 78. Rc2+ Kf1 79. Kg3 Ke1 80. Nf2 Rf7 81. Ra2 Rf8 82. Nd3+ Kd1
83. Nf4 Rc8 84. Nd5 Kc1 85. Kf3 Kb1 86. Rh2 Rc2 87. Rh6 Rc8 88. Ke3 Kc2 89. Kd4
Rd8 90. Rb6 Rd7 91. Rc6+ Kd2 92. Rh6 Ke2 93. Ke4 Kf2 94. Rg6 Ra7 95. Rf6+ Ke2
96. Nc3+ Kd2 97. Kd4 Rd7+ 98. Nd5 Ke2 99. Rf8 Rd6 100. Ra8 Rd7 101. Ke4 Kf2
102. Ra3 Rd8 103. Rf3+ Ke2 104. Rf7 Re8+ 105. Kd4 Rd8 106. Rf6 Rd7 107. Rf8 {
[%mdl 32768] What a bad dream for White.  Weighted Error Value: White=0.09/
Black=0.08. An unexpected result.} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.17"]
[White "Tabatabaei, M. Amin"]
[Black "Alekseenko, Kirill"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2639"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,72,1,0,2,-13,-11,-29,-13,-67,-69,-75,-54,-76,17,-33,-24,-21,-11,-14,
13,5,29,-64,-52,-93,-80,-81,-79,-82,-78,-147,-134,-157,-140,-128,-72,-172,-83,
-154,-71,-129,-95,-104,0,0,0,0,0,0,0,0,-6,-9,-9,-10,11,-160,168,-449,-450,-423,
-431,-1196,-1196]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Nbd2 dxc4 6. Bg2
b5 {E04: Open Catalan: 5 Nf3.} 7. a3 Be7 {[#]} 8. Ne5 $146 ({Predecessor:} 8.
b3 cxb3 9. Nxb3 Bb7 10. O-O O-O 11. Bd2 Nbd7 12. Qb1 Be4 13. Qb2 Nb6 14. Na5 {
0-1 (23) Karner,C (2372)-Zelcic,R (2555) Oberwart 2011}) 8... Nd5 $1 {Black
has an edge.} 9. a4 (9. b3 $11) 9... c6 $1 $15 10. O-O a5 11. e4 Nf6 (11... Nb4
$17 12. d5 O-O) 12. Ng4 {next Nxf6+ is good for White.} (12. d5 $5) 12... Nxg4
13. Qxg4 h5 14. Qe2 ({Don't go for} 14. Qxg7 $2 Bf6 $19) 14... e5 15. dxe5 Na6
{[%cal Bb8a6,Ba6b4,Bb4d3][%mdl 32]} 16. e6 ({White should try} 16. Nf3 $11)
16... Bxe6 17. e5 Nb4 18. axb5 cxb5 19. Ne4 Ra6 20. Nd6+ (20. Nc3 $142) 20...
Bxd6 $17 21. exd6 Nd3 22. Bd2 h4 (22... b4 $142 23. Bd5 Rxd6 24. Bxc4 O-O 25.
Bxe6 Rxe6) 23. Bc3 (23. Be4 $17) 23... hxg3 (23... O-O $1 $19 {...b4 is the
strong threat.} 24. Qh5 b4) 24. hxg3 {[#]} ({White should play} 24. fxg3 Qb6+
25. Kh1) 24... Qxd6 (24... O-O $142 $1 {And now ...b4 would win.} 25. b4 Qxd6)
25. Bxg7 (25. Qe3 $142) 25... Rg8 26. Bc3 Kf8 $40 {[%mdl 128] Black is up to
no good.} (26... b4 $17 27. Bd2 Rh8) 27. Qh5 $11 b4 28. Bd2 Bg4 29. Qb5 Be2 30.
Qxc4 Rg4 31. Qc8+ Kg7 {Strongly threatening ...Ne5.} 32. Be3 $1 Qe6 33. Qb8 (
33. Qxe6 $11 Rxe6 34. Rfb1) 33... Rd6 $2 (33... Bxf1 $17 {stays on course.} 34.
Rxf1 Rd6) 34. Kh2 {[%mdl 8192]} (34. Rxa5 $18 {is the narrow road to win.} Rxg3
{[#]} 35. Bd4+ $1 {[%mdl 512]} Rxd4 36. Qxg3+ Rg4 37. Rg5+ Kf6 38. Rxg4 Qxg4
39. Ra1 Qxg3 40. fxg3) 34... Bxf1 $19 {Black is clearly winning.} 35. Rxf1 Qe5
{Threatens to win with ...Nxf2!} 36. Bf3 {[#]} (36. Qb7 $142 Qxb2 37. Bf3)
36... Nxf2 $1 {[%csl Gg4][%cal Re5g3][%mdl 512] Weighted Error Value: White=0.
64/Black=0.34} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.18"]
[White "Artemiev, Vladislav"]
[Black "Niemann, Hans Moke"]
[Result "1/2-1/2"]
[ECO "D47"]
[WhiteElo "2699"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,101,13,23,0,0,0,0,0,0,-8,-2,-7,-5,-8,-6,-8,-6,-8,-4,0,-6,-7,0,0,0,0,
0,-2,0,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-3,0,0,0,0,0,0,9,9,17,0,0,0,0,0,8,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3
Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 b4 9. Ne4 Bb7 10. Nxf6+ Nxf6 11. O-O Be7 12.
e4 O-O 13. e5 Nd7 14. Qc2 {has lost popularity (14.Be4). D47: Semi-Slav: Meran
System.} h6 {The position is equal.} 15. Bh7+ Kh8 16. Be4 Qc7 17. Be3 c5 {[#]}
18. Rac1 $146 {[%cal Rd4c5]} ({Predecessor:} 18. Rfc1 Rac8 19. b3 Qb6 20. Bxb7
Qxb7 21. Qe2 cxd4 22. Bxd4 Bc5 23. Rc4 Qb5 24. Kf1 {1/2-1/2 (30) Zeitlein,M 
(2465)-Klebel,M (2335) Budapest 1990}) 18... Rac8 19. b3 Qb6 {[#] White must
now prevent ...cxd4.} 20. Bxb7 Qxb7 21. Qe2 Rfd8 22. h3 cxd4 23. Bxd4 Nb6 24.
Bxb6 axb6 25. Rxc8 Rxc8 26. Rd1 Rc3 27. Qb5 Rc8 28. Qd7 Qc7 29. Qxc7 Rxc7 $11 {
[%mdl 4096] Endgame KRB-KRN} 30. Kf1 Kh7 31. Ke2 Kg6 32. g4 h5 33. Rd4 Rc2+ 34.
Rd2 Rc7 35. Rd4 hxg4 36. hxg4 Ra7 37. Rd2 Ra5 38. Ke3 Ra8 39. Ke4 Bc5 40. Ne1
Kg5 41. f3 f5+ 42. exf6 $1 gxf6 43. Rg2 e5 44. f4+ exf4 {[#] Hoping for ...
Re8+.} 45. Nf3+ Kg6 {aiming for ...Re8+.} 46. Kxf4 Re8 {Threatens to win with .
..Bd6+.} 47. Nh4+ Kf7 48. Nf5 Re1 49. Rd2 Rf1+ 50. Kg3 Rg1+ 51. Kf4 {An
uneventful encounter.  Weighted Error Value: White=0.02/Black=0.01} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.19"]
[White "Eljanov, Pavel"]
[Black "Hovhannisyan, Robert"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2691"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,67,10,14,32,16,24,13,17,9,20,23,23,29,39,35,20,0,-8,-13,-20,-53,-37,
-26,14,12,13,8,72,21,40,40,83,86,122,100,153,133,241,232,284,258,282,258,412,
397,534,509,614,642,633,639,1175,1179,1016,379,1053,1220,1128,1093]} 1. e4 e5
2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. O-O d6 6. c3 a5 {C54: Giuoco Piano: 4 c3
Nf6, main lines with 5 d4 and 5 d3.} 7. Re1 Ba7 8. h3 O-O {The position is
equal.} 9. Na3 {[#]} Be6 $146 ({Predecessor:} 9... h6 10. Nb5 Bb6 11. Be3 Bxe3
12. Rxe3 Re8 13. d4 exd4 14. cxd4 Rxe4 15. Rxe4 Nxe4 {0-1 (59) Nepomniachtchi,
I (2784)-Grischuk,A (2777) chess24.com INT 2020}) 10. Bg5 h6 11. Bh4 g5 12. Bg3
Nh5 13. Kh2 Qf6 14. Nb5 Bb6 15. b3 Rad8 16. d4 {Black should prevent d5.} Bc8 {
[#]} (16... Nxg3 {with more complications.} 17. fxg3 Bd7 18. Rf1 Qg7 19. dxe5
g4) 17. Nxe5 $1 Nxg3 18. Nxf7 Rxf7 (18... Nf1+ $1 $11 19. Rxf1 Rxf7) 19. Bxf7+
(19. fxg3 $16 {And now Rf1 would win.} Qg6 20. Na3 (20. Bxf7+ Kxf7 21. Na3 Kg7
$14)) 19... Qxf7 $11 20. fxg3 Rf8 21. Na3 Ba7 22. Nc4 Ne7 (22... Qe8 $142) 23.
Qd3 a4 (23... d5 $16) 24. Rf1 $18 ({Less strong is} 24. bxa4 Be6 $16) 24... Qg7
25. Rxf8+ (25. bxa4 $6 Rd8 $16) 25... Qxf8 26. Rf1 ({But not} 26. bxa4 Be6 $16)
26... Qg7 (26... Qe8 {was worth a try.} 27. e5 d5) 27. e5 dxe5 28. Nxe5 Be6 29.
Qb5 {[%mdl 64] [#] Double Attack} axb3 30. axb3 Bb6 31. Qe8+ Kh7 32. Ng4 $2 (
32. Nf7) 32... Bg8 $2 (32... Bf5 33. Ne5 Qf6) 33. Nf6+ Kh8 34. Nxg8 {Weighted
Error Value: White=0.32/Black=0.41} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.20"]
[White "Ter-Sahakyan, Samvel"]
[Black "Wojtaszek, Radoslaw"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2607"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,60,19,22,12,16,13,13,19,18,17,16,0,0,0,0,0,0,-7,0,0,0,0,0,0,0,0,0,0,
0,-6,0,0,0,-11,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6.
Re1 b5 7. Bb3 O-O 8. a4 Bb7 9. d3 d6 10. Nbd2 Nd7 11. c3 Nc5 12. axb5 axb5 13.
Rxa8 Qxa8 {The position is equal. 13...Qxa8 scores better than 13...Bxa8.} 14.
Bc2 {C88: Closed Ruy Lopez: Anti-Marshall Systems.} b4 15. d4 bxc3 16. bxc3 Nd7
17. Nf1 {[%cal Bd2f1,Bf1e3,Be3g4][%mdl 32]} Qa1 {[#]} 18. Qd2 $146 ({
Predecessor:} 18. Ne3 Qxc3 19. Nd5 Qa1 20. Re3 Qa7 21. Ba4 Bd8 22. Ra3 Qa6 23.
Bc2 Na5 24. Bd2 {1-0 (35) Svidler,P (2714)-Swiercz,D (2655) Saint Louis 2021})
18... Bf6 19. Rd1 Qa2 20. Ne3 Na5 21. Ng4 (21. Qd3 {feels hotter.} Ra8 22. Re1
Bc6 23. Ng4 Nc4 24. Bb1) 21... Nb3 22. Bxb3 Qxb3 23. dxe5 Bxe5 24. Ngxe5 Nxe5
25. Nxe5 dxe5 26. f3 Bc6 27. Qe1 Ra8 28. Be3 f6 29. h4 h5 30. Rb1 Qc2 {Not
much happened in this game.  Weighted Error Value: White=0.02/Black=0.02}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.21"]
[White "Kuzubov, Yuriy"]
[Black "Demchenko, Anton"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2624"]
[BlackElo "2651"]
[Annotator "TA"]
[PlyCount "138"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,138,0,0,0,0,-11,-14,-20,0,0,6,0,0,0,0,-9,-12,-6,0,-8,5,-13,6,0,6,-8,
-17,-27,-25,-40,-39,-53,-27,-60,-58,-57,-47,-70,-54,-50,-58,-58,-47,-37,0,-43,
-44,-136,-77,-83,-29,-35,-30,-27,0,0,0,0,0,0,0,0,0,0,4,0,2,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,8,8,8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,
0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Re1
Nbd7 7. e4 e5 8. Nc3 Re8 9. a4 c6 10. h3 Qc7 11. Be3 b6 12. Qd2 a6 13. Bh6 {
B07: Pirc Defence: Miscellaneous Systems.} Bb7 14. Bxg7 Kxg7 15. Nh4 b5 {[#]}
16. Ne2 $146 ({Predecessor:} 16. Rad1 b4 17. Nb1 c5 18. dxe5 dxe5 19. Qg5 Kh8
20. Nd2 Bc6 21. b3 Ng8 22. Nc4 {0-1 (44) Pira,D (2354)-Daghli,A (2261) Hamedan
2017}) 16... Rad8 17. axb5 cxb5 18. d5 Rc8 19. c3 Nc5 20. Qe3 Nfd7 21. Nc1 Qb6
22. Qg5 Kh8 23. Nf3 Kg7 24. Nh4 b4 25. cxb4 Qxb4 {[%mdl 64] Double Attack} 26.
Re2 Kh8 27. Qh6 a5 28. Nf3 {Ng5! is the strong threat.} Kg8 (28... Nxe4 $2 29.
Nd3 $18) 29. Qd2 Ra8 30. Re1 Qb6 31. b3 Nf6 32. Nh2 Qb4 33. Nf1 Qd4 34. Qxd4 (
34. Ne2 {seems wilder.} Qd3 35. Qxd3 Nxd3 36. Reb1 Ba6 37. Rxa5 Nc5 38. Rb2)
34... exd4 35. Nd2 {[#]} (35. Rd1 $1 $15) 35... Bxd5 $1 {[%mdl 512]} 36. Ne2
$17 {[#]} Ncxe4 ({Black should play} 36... d3 $1 $17 37. Nf4 Bb7) 37. Nxe4 $11
Bxe4 38. Nxd4 d5 39. f3 {The position is equal.} Bd3 40. Rxe8+ Nxe8 41. Nc6 Kf8
42. Rxa5 Rxa5 43. Nxa5 {[%mdl 4096] Endgame KBN-KBN} Ke7 44. Kf2 Kd6 45. b4 d4
46. f4 Nc7 47. Nb7+ Ke7 48. Nc5 Bc4 49. Bf3 Kd6 50. Nb7+ Kd7 51. Na5 Bd5 52.
Be2 Be6 53. h4 Nd5 54. b5 {[%cal Bb4b5,Bb5b6][%mdl 32]} Nc3 55. Bd3 Kd6 56. b6
Bd5 57. Bc4 Bxc4 58. Nxc4+ {KN-KN} Kc6 59. g4 Nd5 60. Kf3 Nxb6 61. Ne5+ $1 Kd5
62. Nxf7 Nc4 {Hoping for ...d3.} 63. Ke2 Ne3 (63... Ke4 $5 64. Ng5+ $8 Kxf4 65.
Nxh7 Ne5 $11) 64. h5 Ng2 65. Kf3 d3 66. hxg6 {aiming for g7.} ({Avoid the trap
} 66. Kxg2 $2 d2 $19) 66... hxg6 (66... d2 $5 67. Ke2 $8 Nxf4+ 68. Kd1 Nxg6 $11
) 67. Ng5 d2 68. Ke2 Nxf4+ 69. Kxd2 Kd4 {Weighted Error Value: White=0.06/
Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.22"]
[White "Aronian, Levon"]
[Black "Yilmaz, Mustafa"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2782"]
[BlackElo "2626"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,80,8,35,31,34,34,31,17,34,22,18,21,25,39,54,0,-4,0,15,25,35,33,108,
79,136,51,125,102,94,97,212,-50,-35,-19,-42,-29,-47,-123,-123,-123,-123,-123,
-123,-129,-123,-192,-192,-202,-170,-170,-162,-159,0,-143,-142,-161,-64,-139,
-95,-95,-114,-178,0,-52,0,-182,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5.
Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 h5 (8... Nbd7 {is interesting.} 9. g4 h6 10.
Qd2 b5 11. a3 Nb6) 9. Nd5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6
Be3 Ng4 and 6 Be3 e5.} Bxd5 10. exd5 Nbd7 {[%cal Bb8d7,Bd7b6,Bb6d5][%mdl 32]}
11. Qd2 {White is slightly better.} g6 12. O-O-O Nb6 13. Kb1 Nbxd5 14. Bg5 {
Black must now prevent Qxd5!} Be7 $1 15. Bd3 ({White should try} 15. Bc4 $14)
15... Qc7 $11 16. Rhe1 Nb6 17. Qf2 {[#]} Rc8 $146 ({Predecessor:} 17... Ne4 18.
Rxe4 Bxg5 19. f4 Bf6 20. f5 g5 21. Rb4 Nd5 22. Rc4 Qb6 23. Qxb6 Nxb6 {1-0 (47)
Giri,A (3016)-Clarke,B (2718) Chess.com INT 2020}) 18. f4 Nfd7 (18... Nfd5 $14)
19. h4 f5 ({Better is} 19... Nf6) 20. fxe5 (20. Bxe7 $1 $16 {fxe5 is the
strong threat.} Kxe7 21. Nd4) 20... Nxe5 ({Black should play} 20... dxe5 $14
21. Bxf5 O-O 22. Be6+ (22. Bxe7 Rxf5 23. Qe2 Rf7 $14) 22... Kg7) 21. Bxe7 Kxe7
22. Nd4 Qc5 23. Qg3 $2 Qxd4 $15 24. Bxf5 $1 {[#]} Qxd1+ 25. Rxd1 gxf5 26. Qf2 (
26. Qg7+ $15 Ke6 27. Qxb7) 26... Nbd7 $1 $17 27. Qxf5 Rcg8 28. Qe4 {[#]} b6 29.
b3 a5 30. a4 (30. Rg1 $17 {might work better.}) 30... Rg4 $19 31. Qe2 Rhg8 32.
g3 {[#]} Rf8 $1 ({Don't take} 32... Rxg3 33. Qxh5 Nf6 34. Qe2 $17) 33. Rd3 Rfg8
$2 (33... Rf5 $17 34. Re3 Ke6) 34. Kb2 (34. Rd1 $1 $11 {was the only way to
keep the balance.}) 34... Nf6 $17 35. Rc3 Nd5 ({Don't play} 35... Rxg3 36. Rxg3
Rxg3 37. Qf2 $17) (35... Ke6 $19 36. Qe1 Re4) 36. Rf3 (36. Rd3 $1 $15 Nf6 37.
Re3) 36... Ke6 37. Rf1 Nb4 38. Kb1 (38. Rf2 $17) 38... Nd5 (38... Rc8 $19 39.
Rc1 Rc5) 39. Kb2 $15 Nb4 (39... Nf6 $15 40. Qf2 Nfd7 41. Qf5+ Ke7) 40. Kb1 $1
$19 Nd5 $2 {Weighted Error Value: White=0.33/Black=0.26} (40... Rc8 $19 41. Rc1
Rc3) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.23"]
[White "Onyshchuk, Volodymyr"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "B52"]
[WhiteElo "2622"]
[BlackElo "2700"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,82,13,0,0,0,0,0,4,-20,-18,-39,-39,-45,-42,-45,-24,-15,-16,-12,-13,
-38,-50,-158,-146,-147,-149,-157,-127,-137,-104,-137,-159,-157,-100,-173,-77,
-74,-69,-143,-141,-140,-153,-136,-128,-143,-136,-158,-147,-164,-145,-141,-147,
-216,-215,-208,-208,-325,-208,-264,-256,-470,-452,-662,-644,-2378,-2299,-4982,
-4978]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. c4 Ngf6 6. Nc3 g6 7.
O-O Bg7 8. d4 cxd4 9. Nxd4 Qa5 $5 {[%mdl 4] Exploring less charted territory.
B52: Sicilian: Moscow Variation with 3...Bd7.} 10. Qe2 Rc8 11. Be3 Nb6 {
[%cal Bd7b6,Bb6a4,Ba4b2,Bb2d3][%mdl 32] [#] The position is equal.} 12. Nb3
$146 ({Predecessor:} 12. Rac1 O-O 13. b3 Nbd7 14. f3 a6 15. Qd2 Rfe8 16. Rfd1
e6 17. Rc2 h5 18. Bf2 {1/2-1/2 (61) Piorun,K (2631)-Artemiev,V (2736) Skopje
2019}) 12... Qb4 13. e5 dxe5 14. c5 $1 {[%cal Rc5b6]} Na4 15. Nb5 a6 16. Na7
Ra8 17. c6 {Hoping for c7.} bxc6 18. Qxa6 O-O $36 {[%mdl 2048] Black fights
for an advantage.} 19. Qxc6 ({White should try} 19. Nxc6 $15 Rxa6 20. Nxb4)
19... Nxb2 $17 20. Rab1 {[#]} Ng4 $1 21. Bc5 (21. Qc5 Qa4) 21... Qf4 {[%csl
Gg4][%cal Rf4h2]} 22. g3 Qh6 {[%csl Gg4][%cal Rh6h2]} 23. h4 Nd3 24. Bb6 Qh5 (
24... Kh8 $142 $1 {Strongly threatening ...f5.} 25. Rbd1 Ngxf2 $1 26. Rxf2 Nxf2
27. Bxf2 f5) 25. Qe4 {[#]} (25. Qf3 $17 Qf5 26. Qxf5 gxf5 27. Nc5 Ndxf2 28. Nd7
) 25... Qf5 (25... Ndxf2 $1 $19 {[%mdl 512]} 26. Rxf2 Nxf2 27. Bxf2 f5 28. Qd5+
Kh8) 26. Qxf5 gxf5 27. a4 {[#]} (27. Nc5 $1 $15 Ndxf2 28. Nd7) 27... e4 $1 28.
a5 Nge5 29. Nd4 e6 30. Rfd1 Bf6 31. Ndc6 Nxc6 32. Nxc6 Rfc8 33. Nb4 {[#]} Ne5
34. Rdc1 (34. a6 $17) 34... Nc4 $19 35. Rc2 Kf8 36. Kf1 (36. Kg2 {might work
better.}) 36... Be7 37. Ra2 Ke8 38. Ke2 $2 (38. Kg2) 38... Rcb8 {Black is
clearly winning.} 39. Nc6 {[#]} (39. Rab2 $142 Nxb2 40. Rxb2) 39... Rxb6 $1 {
[%mdl 512]} 40. axb6 (40. Rxb6 Nxb6) 40... Rxa2+ 41. Ke1 Bc5 {[%mdl 64] Double
Attack.  Weighted Error Value: White=0.61/Black=0.09} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.24"]
[White "Zhou, Jianchao"]
[Black "Cori, Jorge"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "2629"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,96,-14,-17,-29,-13,-53,0,18,0,-19,-18,-11,-30,-28,-11,-56,-71,-57,-63,
-55,-55,-65,-34,-43,-29,-75,-25,-14,0,-18,-9,-62,-48,-52,-62,-55,-47,-111,-122,
-148,-77,-82,-5,-106,-109,-104,-110,-120,-67,-50,0,-67,3,0,0,3,0,0,18,0,0,-2,
-2,-95,-39,-120,0,-135,-129,-135,-132,-311,-313,-308,-297,-391,-203,-202,-142,
-337,-336,-353,-328,-499,-360,-367,-360,-353,-353]} 1. d4 d5 2. c4 c6 3. Nf3
Nf6 4. Nc3 dxc4 5. e4 b5 $1 6. Be2 {D15: Slav Defence: 4 Nc3 a6 and gambit
lines after 4 Nc3 dxc4.} e6 7. a4 Bb7 (7... b4 $1 $15 8. Nb1 Nxe4) 8. axb5 $11
{The position is equal.} cxb5 9. e5 {[#]} Ne4 $146 ({Predecessor:} 9... Nd5 10.
Nxb5 Nb6 11. O-O Nc6 12. Na3 Bxa3 13. Rxa3 O-O 14. h4 Qd5 15. h5 Rfd8 {0-1 (57)
Van Foreest,J (2632)-Ernst,S (2553) Amstelveen 2019}) 10. Nxb5 Bb4+ 11. Kf1 Bd5
12. Na3 Bxa3 13. Rxa3 O-O 14. h4 Nc6 15. Kg1 f6 16. exf6 Qxf6 17. Be3 Qe7 18.
Ng5 Nf6 19. h5 h6 20. Nh3 (20. Nf3 $11) 20... Qb4 21. Ra4 Qxb2 22. Bxc4 Nb4 23.
Bd2 a5 $17 24. Bxd5 Nfxd5 (24... exd5 $142 25. Bc1 Qb1) 25. Kh2 Nc6 (25... Kh8
$17 26. Bc1 Qc3) 26. Qc1 (26. Re1 $11) 26... Qb8+ 27. g3 Qe8 28. Qd1 Ncb4 (
28... Nb6 $17 29. Ra3 Nc4) 29. Ra3 $15 Nc6 30. Re1 ({White should play} 30. Ra4
$1 $11) 30... Rf5 (30... Nxd4 $2 31. Rd3 $18) (30... Qd7 $15) 31. g4 $1 $11 {
[%cal Rg4f5]} Rf7 32. g5 hxg5 33. Bxg5 Rb8 34. Rg3 Rb4 35. Rg4 Qb8+ 36. Kg2 (
36. Kg1 $11 {keeps the balance.}) 36... Qb7 ({Black should try} 36... Qd6 $17 {
Strongly threatening ...e5.} 37. Rg3 Nxd4) 37. Kg1 ({Much weaker is} 37. Rxe6
Nc7 $17) ({White must play} 37. Kh2 $1 $15) 37... a4 (37... Nc3 $1 $17 {
[%cal Rc3d1]} 38. Qd3 Ne5 $1 39. Rxe5 Rb1+ 40. Kh2 Rh1+ 41. Kg3 Rf3+ $3 {
[%mdl 512]} 42. Qxf3 Rxh3+ $1 {[%mdl 576] Deflection} 43. Kxh3 Qxf3+ 44. Rg3
Qh1+ 45. Kg4 Ne4 {[%mdl 64] Double Attack}) 38. Bc1 (38. h6 $1 $11 {was the
only way to keep the balance.}) 38... Nf6 $1 $36 {[%csl LRg4,LRh5][%mdl 2112]
Double Attack. Black is in control.} 39. Rf4 {[#] next Ng5 is good for White.}
Rd7 $1 {...e5! is the strong threat.} 40. Qf3 $2 (40. Ng5 $17 Rdxd4 41. Qe2)
40... Nxd4 $19 41. Qxb7 Rbxb7 ({Don't do} 41... Rdxb7 42. Ng5 $19) 42. h6 Rb3 (
42... Rb1 $142 {Threatens to win with ...a3.} 43. Kh1 a3 44. Rxf6 gxf6 45. Rg1+
Kh7 46. Bxa3 Rxg1+ 47. Kxg1 Kxh6) 43. Kg2 a3 44. Bxa3 {Now White is beyond
hope.} (44. Re5 $17 {is the only way for White.}) 44... Rxa3 45. Ng5 Ra6 ({
Much less strong is} 45... gxh6 46. Nxe6 Nxe6 47. Rxf6 $19) 46. Kh1 (46. Re5 {
is a better defense.}) 46... Nh7 47. Nxh7 Kxh7 48. hxg7 {intending Rg1.} Nf5 {
Weighted Error Value: White=0.36/Black=0.28} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.25"]
[White "Brkic, Ante"]
[Black "Donchenko, Alexander"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "2621"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "120"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,120,28,0,23,5,10,-20,-10,-33,-32,-55,-30,-35,-37,-43,-43,-58,-50,-47,
-61,-52,-44,-103,-78,-143,-147,-135,-26,-43,-32,-34,-27,-27,-28,-39,-37,-32,
-33,-43,-45,-43,-33,-49,-42,-62,-36,-88,-95,-101,-98,-89,-100,-83,-50,-50,-51,
-44,0,-31,0,0,0,-96,-72,-63,0,0,0,0,0,0,107,107,120,-12,0,0,136,132,176,118,
400,400,385,378,616,564,497,89,191,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
} 1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. g3 Nd7 {B11:
Caro-Kann: Two Knights Variation.} 7. Bg2 d4 8. Nb1 h5 9. d3 h4 {[#]} 10. Nd2
$146 ({Predecessor:} 10. O-O Bd6 11. c3 Ne5 12. Qe2 Bc5 13. g4 dxc3 14. Rd1
cxb2 15. Bxb2 Bd4 16. Na3 {1-0 (36) Asadli,V (2574)-Can,I (2398) Belgrade 2021}
) 10... Ne7 (10... Ne5 $5 {[%cal Re5f3]} 11. Qe2 hxg3 $11) 11. Nb3 Qb6 12. c3
c5 13. Qe2 Ng6 14. cxd4 cxd4 15. O-O Be7 16. Bd2 (16. g4 $15) 16... a5 $17 {
[%cal Ba7a5,Ba5a4][%mdl 32]} 17. Rac1 ({Better is} 17. Rab1) 17... a4 18. Na1
e5 (18... hxg3 $17 19. fxg3 Qxb2) 19. Rc2 O-O 20. b4 axb3 (20... Bxb4 $2 21.
Rb2 $18) 21. Nxb3 Rfc8 22. Rfc1 Rxc2 23. Rxc2 Bb4 24. Bxb4 Qxb4 25. Bf3 Qd6 26.
Bg4 Nf6 27. Nd2 b5 28. Nb3 (28. Qd1 $15) 28... Ne7 29. Rc5 hxg3 30. fxg3 Nxg4
31. hxg4 b4 32. Rc2 Qh6 33. Kg2 Qg5 34. Nd2 Ng6 35. Qf3 Ra3 36. Nb3 (36. Nb1
$11 {remains equal.} Ra7 37. Nd2) 36... Nf8 37. Qf5 Qe3 ({Black should play} 
37... Qe7 $15) 38. Qxe5 $11 Qxd3 39. Rf2 ({Avoid the trap} 39. Nxd4 $2 b3 $19)
39... Ne6 40. g5 {Hoping for g6!} Qa6 (40... g6 $11) 41. Qf5 $1 $16 {[%cal
Rf5f7]} Kh8 (41... Rxa2 $2 42. Qxf7+ Kh8 43. Qh5+ Kg8 44. Nd2 $18) 42. Qh3+ Kg8
43. Qf5 Kh8 $1 ({But not} 43... Rxa2 $2 44. Qxf7+ Kh8 45. Qe8+ Kh7 46. Qh5+ Kg8
47. Nd2 $18) 44. Qxf7 Nxg5 45. Qf5 (45. Qe8+ $18 Kh7 46. Kh1 Rxa2 47. Rf4 Ra1+
48. Nxa1 Qxa1+ 49. Kg2 Qa2+ 50. Rf2) 45... Nh7 $2 {[%mdl 8192]} (45... Qh6 $16)
46. Kg1 $1 $18 {Strongly threatening Rh2!} Nf6 47. e5 Ng8 (47... Rxa2 48. Rxa2
Qxa2 49. exf6 gxf6 50. Qxf6+ {[%mdl 64] Double Attack} Kh7 51. Qf7+ Kh6 52.
Qf4+ Kh7 53. Qf7+ Kh6 54. Qf6+ Kh7 55. Qf7+) 48. e6 {Intending Qh5+ and mate.}
Qd6 {[#]} 49. Qg4 (49. Rh2+ $1 $18 Nh6 50. Qg6) 49... Nh6 {[#]} (49... d3 $16)
50. Qg6 $2 ({Not} 50. Qxd4 Qxg3+ 51. Rg2 Qe1+ 52. Kh2 Nf5 $11) (50. Qe4 $1 $18
{e7 would kill now.} Ra7 51. Kg2 (51. Nxd4 Qxg3+ 52. Rg2 Qc3 $16)) 50... Ra6
$11 {The position is equal.} 51. Kh2 {Qe8+ is the strong threat.} (51. Qg5 {
seems wilder.} Qxe6 52. Nc5 Qg6 53. Qd8+ Kh7 54. Nxa6 Qxg3+ 55. Rg2) 51... Qxe6
52. Rf8+ Ng8 53. Qxe6 Rxe6 54. Nxd4 {[%mdl 4096] Endgame KRN-KRN} Rd6 55. Nb3
Ra6 56. Rb8 Rxa2+ 57. Kh3 Rb2 58. Rxb4 Nf6 59. Rb5 g5 60. Nd4 Rxb5 {Quite a
comeback for White.  Weighted Error Value: White=0.25/Black=0.27} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.26"]
[White "Kollars, Dmitrij"]
[Black "Swiercz, Dariusz"]
[Result "1/2-1/2"]
[ECO "C79"]
[WhiteElo "2621"]
[BlackElo "2647"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,102,34,31,24,30,29,45,32,38,52,57,20,20,0,0,0,0,-33,-16,-16,-11,-31,
-16,-3,0,0,0,0,0,-8,0,-11,0,0,0,-37,-7,-41,-33,-50,-37,-42,-42,-59,-54,-86,-37,
-63,-23,-22,0,0,0,0,0,0,0,0,0,-21,-28,-42,-25,-55,-34,-38,-26,-43,-33,-31,-31,
-60,-45,-51,-44,-46,-38,-50,-39,-43,0,0,0,-8,0,0,0,-16,0]} 1. e4 e5 2. Nf3 Nc6
3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Re1 Bd7 7. c3 g6 $1 {[%mdl 4] is currently
scoring better than 7...Be7.} 8. d4 Bg7 9. h3 {C79: Ruy Lopez: Steinitz-type
lines with 3...a6 4 Ba4 Nf6 5 0-0 d6.} O-O 10. Bc2 Nh5 11. Be3 {White is
slightly better.} Qe8 12. Nbd2 Kh8 13. Nf1 f5 14. exf5 gxf5 15. dxe5 dxe5 16.
Bc5 {[#]} Rf6 $146 ({Predecessor:} 16... Rg8 17. Bb3 Be6 18. Bxe6 Qxe6 19. Nd4
Nxd4 20. cxd4 Nf4 21. Qf3 Nxg2 22. Kxg2 e4 {0-1 (28) Hou,Y (2658)-Lagno,K 
(2546) Chess.com INT 2020}) 17. Ng3 Nxg3 18. fxg3 e4 19. Nd2 b6 20. Be3 Ne5 21.
a4 a5 22. Qe2 Rf8 23. Rf1 Qe7 24. Rae1 Rae8 25. Kh2 Bc6 26. Qh5 Qf7 27. Qxf7
Rxf7 28. Bd4 {[%cal Rc2e4]} Rff8 29. b3 Bd5 30. Be3 Be6 31. c4 Rd8 32. Bg5 Rd4
33. g4 Nd3 34. Re2 h6 35. Be3 Rdd8 36. gxf5 Bxf5 37. Kg1 Bg6 38. Rxf8+ Rxf8 39.
c5 bxc5 40. Nc4 Bd4 41. Bxd4+ cxd4 42. Bxd3 exd3 $11 {[%mdl 4096] Endgame
KRB-KRN} 43. Rd2 Rb8 44. Nxa5 c5 45. Kf2 Kg7 46. Ke1 $1 Re8+ 47. Kd1 $1 Ra8 48.
Nc4 {The position is equal.} Rb8 49. Na5 Ra8 50. Nc4 Rb8 51. Na5 Ra8 {Weighted
Error Value: White=0.08/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.27"]
[White "Praggnanandhaa R"]
[Black "Abdusattorov, Nodirbek"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2618"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "161"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,161,5,14,16,12,16,24,14,37,39,44,34,42,32,32,32,32,39,33,19,39,23,47,
11,11,11,18,9,19,12,21,17,29,39,34,20,31,0,10,-10,0,-9,-4,-9,0,-45,-45,-45,-45,
-45,-40,-45,-45,-45,-45,-45,-45,-73,-45,-45,-45,-45,-45,-45,-45,-45,0,-45,-45,
-57,-45,-45,-45,-45,-45,-45,-40,-40,-40,-40,-40,-40,-40,-40,-40,-40,-40,-40,
-40,-40,-40,-40,-40,-40,-40,-40,-23,-40,-40,-40,-40,-40,-40,-40,-40,-40,-40,
-40,-40,-40,-40,-40,-40,-40,-40,-40,-40,-40,-40,-40,-35,-40,-33,-25,-19,-42,
-25,-50,-14,-14,-12,-15,-11,-46,-2,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1.
d4 Nf6 2. Bf4 d5 3. Nf3 c5 4. e3 Nc6 5. Nbd2 cxd4 6. exd4 {D02: 1 d4 d5 2 Nf3
sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Qb6 7. Nb3 Bg4 8. h3 {
White has an edge.} Bxf3 (8... Bh5 {looks sharper.} 9. c3 e6 10. Bd3 a5 11. Rb1
Ne4) 9. Qxf3 e6 10. c3 a5 11. Rb1 a4 12. Nd2 {[#]} Qd8 $146 ({Predecessor:} 
12... Be7 13. Bd3 O-O 14. a3 h6 15. O-O Qd8 16. Rfe1 Bd6 17. g4 Bxf4 18. Qxf4
Qb8 {1-0 (50) Bluebaum,M (2672)-Gukesh,D (2563) Chess.com INT 2020}) 13. a3 Bd6
14. Bb5 O-O 15. O-O Ne8 16. Rfe1 Qf6 17. Be3 Qxf3 18. Nxf3 Nc7 19. Bd3 b5 20.
Re2 f6 21. Rd1 Na5 22. Nd2 Kf7 23. Bc2 ({But not} 23. Bxh7 $2 g6 $19) 23... h5
24. f4 Rh8 25. Nf3 Nc4 26. Bc1 h4 27. Rde1 g6 28. Rf1 Be7 29. Bd3 Rh5 30. Nh2
Ne8 31. Ng4 Ng7 32. Rfe1 Bd6 33. Ne3 Rhh8 34. Nf1 Rae8 35. Nh2 Nh5 36. Rf2 $1
Ng3 37. Nf1 Nh5 38. Nh2 Bc7 39. Ng4 Ng3 40. Ne3 f5 41. Nf1 {[%cal Be3f1,Bf1h2,
Bh2f3][%mdl 32]} Ne4 42. Rfe2 Bb6 43. Nh2 Bd8 44. Nf3 Kg7 45. Kh2 Bf6 46. Kg1
Rhg8 47. Kh2 Kf7 48. Kg1 Ke7 49. Kh2 Rb8 50. Kg1 Ncd6 51. Kh2 Nf7 52. Be3 Ke8
53. Rb1 Nfd6 54. Rbe1 Rb7 55. Bc1 Nf7 56. Be3 Bd8 57. Rb1 Nfd6 58. Rbe1 Nc4 59.
Bc1 $1 Rbg7 60. Kg1 Kd7 61. Kh2 Bf6 62. Kg1 Kc7 63. Kh2 Kc8 64. Kg1 Ncd6 65.
Kh2 Rb7 66. Be3 Bd8 67. Kg1 Nf7 68. Kh2 g5 69. fxg5 Nfxg5 70. Bf4 $1 ({Not} 70.
Nxh4 $2 Bc7+ 71. Kh1 Ng3+ 72. Kg1 {[#]} Nxh3+ $1 {[%mdl 512]} 73. gxh3 Nxe2+
74. Kf2 Nxc3 $1 $19 {[%mdl 512]}) 70... Nf7 71. Rb1 Kd7 72. Rc2 {The position
is equal.} Bf6 73. b3 axb3 74. Rxb3 Nfd6 75. Rcb2 Rgb8 76. Rb1 Kc6 77. Be5 Be7
78. Bf4 Bf6 79. Be5 Be7 80. Bf4 Bf6 81. Be5 {Weighted Error Value: White=0.05/
Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.28"]
[White "Indjic, Aleksandar"]
[Black "Bluebaum, Matthias"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "2612"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,118,29,15,17,33,14,8,0,24,16,46,37,39,42,43,52,58,47,54,52,45,48,61,
63,54,53,82,68,59,68,100,58,57,59,60,61,60,61,72,71,63,72,83,90,81,18,135,129,
139,126,185,195,399,397,397,305,305,305,304,88,88,88,89,29,29,28,55,37,37,37,
37,37,38,45,394,381,840,714,2477,2235,29969,29970,29970,29971,29970,29971,5439,
1450,1338,1275,1155,1070,1481,1329,1040,1024,754,0,0,0,0]} 1. e4 e6 2. d4 d5 3.
e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 f6 7. O-O fxe5 8. Nxe5 Nxe5 9. dxe5 Qc7 10.
c4 O-O-O 11. Nc3 {C02: French: Advance Variation.} Qxe5 12. g3 Nf6 13. Re1 {[#]
} Qf5 $146 ({Predecessor:} 13... Ne4 14. Bf4 Qd4 15. Nxe4 dxe4 16. Qb3 Qf6 17.
Qa3 e5 18. Be3 Qb6 19. Red1 Be6 20. Rxd8+ Kxd8 21. b4 Qxb4 22. Qxa7 Kc7 23. Rd1
Qb6 24. Qa8 Bd7 25. Bg5 {1-0 (25) Inkiov,V (2434)-Merenciano,A (2188) Avoine
2015}) 14. Bd3 Qh3 15. Bf1 Qf5 16. Bf4 Ne4 17. cxd5 exd5 ({Don't play} 17...
Nxc3 18. bxc3 Qxd5 19. Qe2 $16 (19. Bg2 Qxd1 20. Raxd1 Be7 $14)) 18. Qxd5 Nxc3
19. Qxf5 Bxf5 20. bxc3 Bd6 21. Bxd6 Rxd6 22. Re5 Bg6 23. Rxc5+ Kb8 24. Re1 Rd2
25. a4 Re8 26. Rce5 Rxe5 27. Rxe5 $14 {[%mdl 4096] Endgame KRB-KRB} Kc7 28. f4
Kd6 29. c4 b6 30. Rg5 Rd1 31. Kf2 Rd2+ 32. Be2 (32. Ke3 $1 $16 {[%cal Re3d2]}
Rxh2 33. Be2) 32... Ke6 (32... Ra2 $11 {remains equal.}) 33. a5 $16 Kf6 34. Ke3
Rd6 (34... Rd8 $16 35. Re5 Re8) 35. Re5 $18 Re6 $2 (35... h6 36. g4 Bc2) 36.
Rxe6+ Kxe6 37. axb6 axb6 {KB-KB} 38. Bd3 $1 {[%cal Rd3g6] aiming for Bxg6.} Bf7
39. Be4 $2 (39. Bxh7 $18 {Hoping for g4.} g6 40. g4) 39... Kf6 $16 40. Kd4 ({
Much worse is} 40. Bxh7 $6 g6 $11) 40... h5 41. f5 (41. Bf3 $16) 41... Be8 $11
42. Bc2 h4 43. g4 Kg5 $1 {[%cal Rg5g4]} 44. h3 {Black must now prevent Ke5.}
Kf4 45. Be4 Ba4 $1 46. Bg2 (46. Bd5 {is interesting.} Bc2 47. Bc6 Bd1 48. Kd3
Bb3 49. Bh1) 46... Be8 $2 {[%mdl 8192]} ({Black should play} 46... Bd1 $14) 47.
Bb7 $1 $18 Ba4 $2 (47... Kg3 48. Ke4 Kxh3) 48. Kd5 $1 {[%cal Rd5e6]} Kg3 49. g5
Kxh3 50. g6 Bc2 51. f6 gxf6 52. g7 Bh7 53. Bc8+ (53. Kc6 $142 Kg4 54. Kxb6)
53... Kg3 {[#]} 54. Bf5 $1 {[%cal Rf5h7][%mdl 512]} Bg8+ 55. Be6 $1 {[%cal
Re6g8]} Bh7 {[#]} 56. Kc6 $1 {[%cal Rc6b6]} f5 {[#]} 57. Bxf5 $1 {[%mdl 512]}
Bg8 {[#]} 58. Kxb6 $2 (58. Kd6 $1 $18) 58... Bxc4 $11 59. Bh7 h3 {Weighted
Error Value: White=0.24/Black=0.46} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.29"]
[White "Chigaev, Maksim"]
[Black "Sadhwani, Raunak"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2639"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,84,21,25,19,20,25,36,35,35,4,12,17,12,19,39,5,21,0,0,-51,-46,-46,-37,
-70,-86,-79,-25,-27,-12,-12,-13,-20,-15,-25,-15,-15,-13,-52,0,-29,-63,-67,-43,
-44,-37,-78,-78,-161,-161,-172,21,20,33,0,0,0,0,-49,-19,-25,-17,-31,-42,-45,
-39,-118,116,116,120,124,92,0,70,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3
Bc5 5. c3 O-O 6. O-O {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines
and 4 0-0 Bc5.} d5 7. exd5 Qxd5 8. Bc4 {White is slightly better.} Qd8 9. b4
Be7 10. Nbd2 a6 11. a4 Bf5 12. Qc2 Nd5 13. Ne4 Bg4 {[#]} 14. a5 $146 (14. Ne1
$11) ({Predecessor:} 14. Qd1 Kh8 15. Qb3 Nf4 16. Bxf4 Bxf3 17. Be3 Be2 18. Rfe1
Bxd3 19. Bxd3 Qxd3 20. Nc5 Qg6 21. Nxb7 {1/2-1/2 (21) Svidler,P (2745)-Eljanov,
P (2741) Germany 2016}) 14... Bxf3 $15 15. gxf3 Qd7 16. Bd2 Rad8 17. Qb3 Nf4 ({
Black should play} 17... Kh8 $17) 18. Bxf4 $11 exf4 19. d4 Qh3 {Hoping for ...
Rxd4!} 20. Rfe1 Qxf3 $40 {[%mdl 128] Black has some attack.} 21. Qd1 Qh3 22.
Bf1 Qh4 23. Bg2 g5 ({Better is} 23... Rfe8 $15) 24. b5 axb5 25. a6 g4 26. axb7
f3 27. Ng3 Bd6 28. Bxf3 (28. Bf1 $17) 28... gxf3 $19 29. Qxf3 Bxg3 $2 (29...
Ne7 $19 30. Re4 Qh6) 30. hxg3 $11 Qh6 31. d5 Nb8 32. Re7 c6 33. Rc7 {[%cal
Rd5c6]} cxd5 34. Re1 Qg6 35. Re5 Na6 36. Rce7 b4 {[#] And now ...b3 would win.}
37. Qf4 (37. Rxd5 $15 Rxd5 38. Qxd5) 37... bxc3 $2 (37... h6 $17 38. cxb4 d4)
38. Rg5 $16 d4 {aiming for ...d3.} 39. Rxg6+ hxg6 40. Re4 (40. Qf6 $16 c2 41.
Re1) 40... Rfe8 {[#]} (40... c2 $11 41. Qh6 d3) 41. Rxe8+ (41. Qf6 $1 $14 Rxe4
42. Qxd8+ Kh7 43. Qc8) 41... Rxe8 $11 42. Qxd4 Re1+ {Weighted Error Value:
White=0.23/Black=0.28} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.30"]
[White "Jobava, Baadur"]
[Black "Erigaisi Arjun"]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "2582"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,66,17,31,2,30,1,5,-24,-26,-19,-14,-6,-8,-17,-7,-96,-50,-102,-102,-63,
-109,-133,-50,-58,-61,-57,-52,-58,-64,-43,-61,-55,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 e6 2. Nc3 d5 3. d4 Bb4 4. cxd5 exd5 5. Bf4 c5
6. e3 {D31: Queen's Gambit Declined: Semi-Slav without ...Nf6 (+ Marshall
Gambit and Noteboom) and Exchange Variation lines without ...Nf6.} Nf6 {[#]} 7.
Nge2 $146 ({Predecessor:} 7. Bd3 Nc6 8. Nge2 c4 9. Bc2 O-O 10. Bg5 h6 11. Bh4
Be7 12. O-O Nd7 13. Bg3 Nf6 {1-0 (38) Nakamura,H (2754)-Dubov,D (2700) Paris
2019}) 7... O-O 8. Rc1 Nc6 9. dxc5 Bxc5 10. Nxd5 Nxd5 11. Rxc5 Be6 12. g3 (12.
e4 $11 {remains equal.} Nxf4 13. Nxf4) 12... g5 13. Bxg5 Qxg5 $17 14. Bg2 Rad8
{[#] Strongly threatening ...b6.} 15. Nf4 {[%cal Rg2d5]} Nce7 (15... Ncb4 $17 {
Hoping for ...Qe7.} 16. Bxd5 Nxd5) 16. e4 $15 Qe5 {...Nc3! is the strong
threat.} 17. O-O $1 {[#]} Nc3 {[%mdl 64] Double Attack, Discovered Attack} 18.
Rxe5 Nxd1 19. Nxe6 fxe6 20. Bh3 Nxb2 (20... Rf6 $15) 21. Rb5 $11 {The position
is equal.} Rd2 22. Bxe6+ Kh8 23. Rxb7 Nc6 24. Bf5 Nd4 25. Rxh7+ Kg8 26. Rxa7
Nd1 27. g4 Rb8 28. g5 Rbb2 {[%cal Rd1f2]} 29. Ra8+ Kg7 30. Ra7+ Kg8 {[%cal
Rd1f2]} 31. Ra8+ Kg7 32. Ra7+ Kg8 {[%cal Rd1f2]} 33. Ra8+ Kg7 {Weighted Error
Value: White=0.12/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.31"]
[White "Kuybokarov, Temur"]
[Black "Ponomariov, Ruslan"]
[Result "1/2-1/2"]
[ECO "C85"]
[WhiteElo "2549"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,111,-1,15,8,18,11,11,6,10,10,8,-21,29,27,29,29,29,29,29,29,33,33,39,
38,40,32,35,32,29,23,35,37,46,46,39,25,27,2,2,2,8,8,8,0,18,22,33,0,19,17,13,0,
23,31,31,9,22,24,31,14,18,22,19,7,6,-6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O
Be7 6. Bxc6 dxc6 7. Qe1 c5 8. d3 {C85: Closed Ruy Lopez: Deferred Exchange
Variation.} Qd6 9. Nbd2 b5 {[#]} 10. a4 $146 {next axb5 is good for White.} ({
Predecessor:} 10. Nb3 Be6 11. Be3 Nd7 12. Nfd2 g5 13. a4 c6 14. f3 O-O 15. Qf2
Rfc8 16. Rfd1 {0-1 (39) Klaman,K-Pogrebissky,I Tbilisi 1949}) 10... c6 11. Nb3
Be6 12. Na5 Nd7 (12... O-O {with more complications.} 13. Be3 Qc7 14. Ng5 Bd7
15. Nb3 c4) 13. Ng5 Bxg5 14. Bxg5 O-O 15. Be3 Qc7 16. Nb3 c4 17. Nc5 Nxc5 18.
Bxc5 Rfd8 19. Qe3 {Threatens to win with Bb6.} Rd7 20. d4 {Hoping for dxe5.}
exd4 21. Bxd4 Qd6 22. c3 f5 23. f3 Rc8 24. Bc5 Qd2 25. Rf2 (25. Rfe1 {is
interesting.} Qxe3+ 26. Rxe3 fxe4 27. Rxe4 Bf7 28. axb5 axb5 29. Bd4) 25...
Qxe3 26. Bxe3 Re8 27. axb5 axb5 28. Bc5 Rdd8 29. h3 Ra8 30. Re1 Rad8 31. Rfe2
fxe4 32. fxe4 Kf7 33. Ra1 Ra8 34. Rf1+ Kg6 35. Rd2 Red8 36. Bd6 Rd7 {The
position is equal.} 37. Rfd1 Re8 38. Kf2 Bd5 39. e5 Kf5 40. Ra1 Rf7 41. Ke3 Ke6
42. Kd4 h5 43. Kc5 h4 44. Ra6 Rc8 45. Ra1 Rh8 46. Rg1 Rh5 47. Rd4 Rf2 48. g3
hxg3 49. Rxg3 g5 50. Rd1 Rf3 51. Rdg1 Rxg3 52. Rxg3 Kd7 53. Rg1 Ke6 54. Rg3 Kd7
55. Rg1 Ke6 56. Rg3 {Weighted Error Value: White=0.04/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.32"]
[White "Keymer, Vincent"]
[Black "Ivic, Velimir"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2630"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,101,14,17,17,8,18,13,17,13,10,17,16,14,13,15,13,16,17,0,0,0,24,0,0,0,
0,0,40,40,36,39,32,33,39,0,15,17,17,23,18,0,0,4,23,25,15,17,59,60,97,39,54,58,
106,82,205,196,201,193,298,283,332,328,314,231,510,358,347,319,312,305,381,411,
410,410,760,712,1417,1410,1388,1364,1341,1328,1231,1192,4802,4570,4132,1041,
5114,4780]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7.
Bh4 O-O {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 8. e3 Bf5
9. Qb3 Bxc3+ {The position is equal.} 10. bxc3 Nbd7 11. Be2 c5 12. dxc5 Nxc5
13. Qb4 Rc8 14. O-O Re8 15. Rad1 $5 {[%mdl 4] Exploring less charted territory.
} g5 {[#] And now ...a5 would win.} 16. Bg3 {[#]} Qe7 $146 ({Predecessor:} 
16... a5 17. Qa3 Qb6 18. c4 dxc4 19. Rd6 Rc6 20. Rxc6 bxc6 21. Bxc4 Nce4 22.
Ne5 Be6 {0-1 (47) Giri,A (2763)-Maghsoodloo,P (2676) Chess.com INT 2020}) 17.
c4 Nce4 18. Qxe7 Rxe7 19. cxd5 Nxg3 (19... Rd7 {with more complications.} 20.
Nd4 Rxd5 21. Rc1 Nc3 22. Bf3 Be4) 20. hxg3 Rd7 21. d6 Rcd8 22. Nd4 Bg6 23. Bd3
(23. g4 {seems wilder.} Rxd6 24. a4 a6 25. a5 R6d7 26. Rc1) 23... Bxd3 24. Rxd3
{Black must now prevent Nf5.} Rxd6 25. Ra3 a6 26. Nf5 Rd3 27. Nxh6+ Kf8 28.
Rxd3 Rxd3 $11 {[%mdl 4096] Endgame KRN-KRN} 29. Rc1 Nd5 30. Rc8+ Ke7 31. Nf5+ (
31. e4 $16 Nb4 32. Rc7+ Rd7 33. Rxd7+ Kxd7 34. a3 (34. Nxf7 Nxa2 35. Kf1 Nc3
$14)) 31... Kd7 32. Rf8 $1 Rd1+ 33. Kh2 Rd2 {Loses the game.} (33... Ke6 $16 {
was necessary.}) 34. e4 $18 (34. Rxf7+ Ke6 $14) 34... Nc3 35. Rxf7+ Kc6 (35...
Ke8 {might work better.} 36. Rc7 (36. Rxb7 Rxf2 37. Nd6+ Kf8 $16) 36... Nxa2
37. Ng7+ (37. Rxb7 Rxf2 38. g4 Kd8 $18) 37... Kd8 38. Ne6+ (38. Rxb7 Rxf2 39.
Ne6+ Kc8 $16) 38... Ke8) 36. e5 Rxa2 37. e6 Nd5 38. Rf8 a5 $2 (38... Kc5 {
is a better defense.} 39. e7 Nxe7) 39. e7 (39. Rc8+ Kb6 $18) 39... Nxe7 40.
Nxe7+ {KRN-KR} Kd7 41. Nd5 b5 42. Nc3 Rb2 43. Ra8 a4 {[#]} (43... b4 $142) 44.
Nxb5 $1 {White is clearly winning.} Rxb5 (44... Rxf2 45. Rxa4) 45. Rxa4 {KR-KR}
Ke6 46. f3 Kf5 47. Kh3 Rc5 48. Ra6 g4+ 49. Kh4 ({Not} 49. fxg4+ Kg5 $18) 49...
Rc4 50. Ra5+ Kf6 51. f4 {Weighted Error Value: White=0.09/Black=0.27} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.33"]
[White "Sindarov, Javokhir"]
[Black "Svidler, Peter"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2587"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,68,25,0,18,10,20,8,20,13,6,8,18,8,22,8,56,37,43,49,41,37,36,34,39,28,
25,30,43,29,46,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12,0,-24,-20,-14,
-11,-8,-6]} 1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. d4 cxd4 5. Nxd4 a6 6. a3 Nc6 {
B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 7. Bc4
Bd7 8. O-O g6 {[#]} 9. Nf3 $146 ({Predecessor:} 9. Bb3 Bg7 10. Nde2 Bg4 11. f3
Be6 12. Nd5 Bxd5 13. exd5 Na5 14. Ba2 b5 15. c3 {1-0 (39) Oldach,E (2020)
-Skibbe,P (1565) Rostock 2011}) 9... Bg7 10. h3 O-O 11. Re1 Rc8 12. Ba2 Be6 13.
Bxe6 fxe6 14. Ng5 Qd7 15. e5 Nxe5 16. f4 Nf7 {[%cal Be5f7,Bf7h6,Bh6f5][%mdl 32]
[#] aiming for ...Nxg5.} 17. Nxe6 Rfe8 18. Nxg7 Kxg7 19. Be3 h5 20. Qd2 Nh6 $1
21. Rad1 Nf5 22. Bf2 Qc6 23. Re6 Qc4 24. Rde1 b5 25. Qd1 {Strongly threatening
g4.} Kf8 26. Qf3 Qc6 {With the idea ...Qxf3.} 27. Qd3 Qc4 28. Qf3 Qc6 {
Threatening ...Qxf3.} 29. Qd3 Qc4 30. g3 a5 31. Nxb5 Qxc2 32. Qxc2 Rxc2 33.
R6e2 Rec8 34. Kg2 d5 {Weighted Error Value: White=0.04/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.34"]
[White "Matlakov, Maxim"]
[Black "Ganguly, Surya Shekhar"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2682"]
[BlackElo "2617"]
[Annotator "TA"]
[PlyCount "148"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,148,12,10,12,6,3,8,15,7,23,12,13,4,9,13,14,7,4,-3,0,-19,7,-30,18,18,
16,4,37,-31,-29,-41,-29,-60,-52,-56,-47,-58,-52,-51,-60,-72,-62,-80,-75,-98,
-77,-75,-75,-74,-80,-102,-91,-94,-102,-94,-100,-118,-69,-73,-40,-40,-40,-40,
-40,-40,-40,-40,-40,-40,-40,-40,-8,-8,0,-40,0,-40,-40,-40,-40,-40,-40,-40,-40,
-40,-40,-40,0,0,0,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-60,-11,-11,
-11,-29,-29,-29,-29,-30,-30,-60,-60,-60,0,0,0,0,0,-8,0,-8,-8,-8,-8,-8,-8,-30,
-14,-55,0,-8,-8,-8,0,0,8]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O
6. b3 d4 7. e3 $1 {7.e3 scores better than 7.Bb2.} c5 {A14: English Opening: 1.
..e6 with b3 by White.} 8. Ne5 Nfd7 9. exd4 cxd4 10. Nxd7 Qxd7 11. Ba3 {[#]} a5
$146 ({Predecessor:} 11... Na6 12. Bxe7 Qxe7 13. d3 Nc5 14. Nd2 e5 15. Ne4 Ne6
16. Qe2 f6 17. f4 exf4 18. gxf4 {1/2-1/2 (37) Grandelius,N (2673)-Ganguly,S 
(2636) Wijk aan Zee 2020}) 12. d3 Na6 13. Bxe7 Qxe7 14. Nd2 Rd8 15. a3 Rb8 16.
Nf3 f6 17. Qd2 b5 18. Qxa5 Nc5 19. Rab1 ({But not} 19. cxb5 Nxb3 20. Qa4 Nxa1
$17) 19... Nxd3 20. Rbd1 (20. cxb5 $14 e5 21. a4) 20... bxc4 $15 21. bxc4 Rb3
22. c5 Bb7 $1 ({Don't go for} 22... Nxc5 $2 23. Nxd4 Rxd4 24. Rxd4 $18) 23. c6
$1 {[%cal Rc6b7]} Bxc6 ({Inferior is} 23... Rxa3 24. Qb6 $18) 24. Nxd4 $1 Rxd4
25. Bxc6 Rxa3 26. Qh5 Rc3 27. Bb5 Ne5 28. Be2 {[#]} g6 $1 29. Qh6 {[#]} Nf7 $1
30. Qh3 e5 31. Qg2 Rxd1 32. Rxd1 e4 33. Qf1 Qc5 34. Qe1 Ne5 35. Qd2 Kg7 (35...
Nd3 $5 36. Bxd3 Rxd3 $17) 36. Qd8 Rc1 37. Rxc1 Qxc1+ 38. Kg2 Qc5 39. h4 h5 40.
Qa8 Qc6 41. Qa7+ Nf7 (41... Qd7 $5 {[%cal Rd7a7]} 42. Qe3 f5 $15) 42. Qd4 Ne5
43. Qa7+ Kf8 44. Qb8+ (44. Qh7 {with more complications.} Qd5 45. Qh8+ Ke7 46.
Qg7+ Qf7 47. Qh8) 44... Kf7 45. Bb5 Qd5 46. Qc7+ Kf8 {And now ...e3+ would win.
} 47. Qb8+ Kg7 {aiming for ...e3+.} 48. Qa7+ Qf7 49. Qa8 e3 50. fxe3 Ng4 51.
Be2 ({Better is} 51. e4 $1 $11) 51... Nxe3+ 52. Kf2 Qe7 {Threatens to win with
...Nf5.} (52... Nf5 {looks sharper.} 53. Bd3 Nd6 54. Qf3 Qa2+ 55. Qe2 Qa7+) 53.
Qf3 Nf5 {Hoping for ...Nd4.} 54. Qf4 Qc5+ 55. Kg2 Qc2 56. Kf2 Kh7 57. Qc4 Qb2
58. Qf7+ Ng7 59. Kf1 Qc3 60. Kf2 Qd4+ 61. Kg2 Qd8 62. Bc4 Kh6 63. Qg8 Qd2+ (
63... Qxg8 $15 64. Bxg8 Ne8) 64. Kf1 $11 {[%cal Rg8h8]} Qd1+ 65. Kg2 {[%cal
Rg8h8]} Qc2+ 66. Kg1 {[%cal Rg8h8]} g5 {White must now prevent ...Qd1+.} (66...
Qb1+ {seems wilder.} 67. Kh2 g5 68. hxg5+ fxg5 69. Qd5 h4) 67. hxg5+ fxg5 68.
Qd5 Qc1+ 69. Kg2 {Threatening mate with Qc6+.} Qb2+ 70. Kg1 (70. Kh1 {keeps
more tension.} Qb1+ 71. Kh2 h4 72. gxh4 Qc2+ 73. Kh3) 70... Qf6 71. Kg2 Qb2+ (
71... Nf5 $5 {[%cal Rf5e3]} 72. Qf3 g4 73. Qf4+ Kg6 $17) 72. Kg1 {The position
is equal.} Qb6+ 73. Kg2 Qf6 74. Qe4 h4 {Weighted Error Value: White=0.08/
Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.35"]
[White "Mamedov, Rauf"]
[Black "Pichot, Alan"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2673"]
[BlackElo "2628"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,122,-10,-9,-3,-10,0,0,0,0,0,0,0,-24,41,46,48,35,35,40,46,46,38,44,63,
86,85,0,0,0,0,0,0,0,0,0,0,0,62,52,72,-36,-22,-66,0,-34,-41,-76,-41,-108,-113,
-84,-91,-233,-163,-287,-147,-724,-497,-483,-483,-396,-402,-762,-754,-722,-700,
-913,-895,-914,-812,-3210,-3590,-2193,-1874,-2035,-1997,-1581,-1514,-12834,
-11777,-12835,-12835,-12837,-12838,-12841,-12841,-12842,-12843,-12844,-12841,
-12841,-12840,-12841,-12841,-12841,-12842,-12842,-12843,-12843,-12843,-12844,
-12844,-12845,-12845,-12845,-12844]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 c5 4. O-O e6 5.
d3 Nc6 6. Nbd2 Be7 7. e4 O-O 8. Re1 Qc7 9. Nf1 dxe4 10. dxe4 b5 $5 {[%mdl 4]
Leaves trodden paths. C00: French: Unusual White 2nd moves.} 11. Bf4 Qb6 {[#]}
12. a4 $146 ({Predecessor:} 12. c3 Rd8 13. Qc2 Bb7 14. e5 Nd5 15. Ng5 g6 16.
Ne4 Nxf4 17. gxf4 a5 18. Re3 {1/2-1/2 (43) Strittmatter,N (2056)-Pepping,S 
(1965) Germany 2006}) 12... Rd8 {The position is equal.} 13. Qc1 b4 14. Ne3 Ba6
15. Nd2 Rxd2 16. Qxd2 $14 Rd8 17. Qc1 Nd4 $1 18. a5 Qb5 19. b3 Qe2 20. Qd1 Qb5
21. Nc4 Nxb3 22. cxb3 (22. Nd6 $1 $16 {[%cal Rd6b5]} Nxa1 23. Nxb5 Rxd1 24.
Rxd1 Nxc2 25. Nxa7) 22... Rxd1 $11 23. Rexd1 h6 24. Rac1 Qe8 25. Nd6 Qc6 26. e5
Nd5 27. Nf5 exf5 (27... Qd7 $11) 28. Bxd5 $14 Qc8 {[#] Threatening ...g5.} 29.
Be3 ({Only move:} 29. e6 $1 $16 {[%cal Re6f7]} fxe6 {[#]} 30. Re1 $1 exd5 31.
Rxe7) 29... Bb5 30. Rd2 Bc6 (30... g5 $15) 31. Bxc6 Qxc6 32. Rcd1 a6 33. h4 ({
White should play} 33. Rd7 $15 Qf3 34. Re1) 33... g5 34. hxg5 hxg5 35. Rd5 (35.
Rc1 $17) 35... Kf8 36. Rd7 (36. Rd6 $142 Qf3 37. Bxc5 Bxd6 38. Rxd6) 36... Qe6
(36... c4 $19 {Strongly threatening ...f4.} 37. bxc4 b3) 37. R1d5 $2 {[%mdl
8192] Now White is beyond hope.} (37. Rc7 $17 f4 38. Bxc5 Bxc5 39. Rd8+ Kg7 40.
Rxc5) 37... Ke8 38. Rxe7+ Qxe7 39. Bxc5 $19 {[%mdl 4096] Endgame KQ-KRB} Qe6
40. Rd3 (40. Rd4 $142 Qxe5 41. Rc4) 40... f4 {Black is clearly winning.} 41.
Bb6 Qxe5 42. gxf4 gxf4 43. Kf1 Qe4 44. Rd8+ Ke7 45. Rd4 Qb1+ 46. Kg2 Qxb3 47.
Bc5+ Ke6 48. Bf8 Ke5 49. Rxb4 Qd5+ 50. Kh2 Qxa5 51. Rc4 Qd8 52. Bg7+ Kf5 53.
Rc5+ Kg6 54. Be5 Qh4+ 55. Kg2 Qg4+ 56. Kh2 f3 {[%csl Gf3][%cal Rg4g2]} 57. Bg3
f5 58. Rc6+ Kf7 59. Rc7+ Ke6 {( -> ...Qh5+)} 60. Rc6+ Kd5 61. Rd6+ Kc5 {
Weighted Error Value: White=0.81/Black=0.18} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.36"]
[White "Movsesian, Sergei"]
[Black "Saric, Ivan"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "2627"]
[BlackElo "2644"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,64,22,16,8,-3,-10,25,0,0,-60,-52,-67,-56,-124,-111,-129,-122,-119,
-91,-110,-109,-217,-235,-340,-325,-358,-358,-332,-352,-350,-349,-351,-341,-321,
-234,-216,-236,-202,-197,-190,-186,-174,-170,-198,-194,-191,-178,-448,-452,
-29964,-29964,-29965,-29966]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Bxc6
dxc6 6. d3 Nf6 7. h3 O-O 8. Bd2 {[#] B31: Sicilian: 2...Nc6 3 Bb5 g6.} e5 $146
({Predecessor:} 8... c4 9. e5 Nd7 10. d4 b5 11. Nc3 Nb6 12. Qc1 f6 13. Bh6 fxe5
14. Bxg7 Kxg7 15. Nxe5 Qxd4 {1/2-1/2 (51) Dolzhikova,K (2228)-Sibashvili,G 
(2389) Batumi 2019}) 9. Bc3 Nh5 10. Nxe5 {White has an edge.} Bxh3 $1 11. f4 (
11. gxh3 $11 Bxe5 12. Bxe5 Qg5+ {[%mdl 64] Double Attack} 13. Bg3 Nxg3 14. fxg3
Qxg3+ {[%mdl 64] Double Attack} 15. Kh1 Qxh3+ 16. Kg1) 11... Bc8 $15 12. Nd2 f6
13. Ng4 {[#]} (13. Nxg6 $15 hxg6 14. g4) 13... b5 $1 $17 {[%cal Rb5b4] And now
...b4 would win.} 14. Nb3 c4 15. Nc5 Qd6 16. d4 Nxf4 17. Nf2 (17. Ne3 $17)
17... f5 $19 18. b4 (18. a4 $142) 18... a5 19. bxa5 {[#]} Bxd4 $1 {[%mdl 576]
Deflection, Decoy} 20. Bxd4 {[#]} Qxd4 {[%mdl 512]} 21. Qxd4 Ne2+ {[%mdl 64]
Double Attack} 22. Kh2 Nxd4 23. c3 Ne6 24. Nxe6 Bxe6 25. a4 bxa4 26. Rxa4 fxe4
{Strongly threatening ...e3.} 27. Kg1 e3 28. Ne4 Rxf1+ 29. Kxf1 Bf5 30. Ng3 (
30. Rxc4 Rxa5 31. Ke2) 30... Bd3+ 31. Ke1 {[#]} (31. Kg1 $19 Kf7 32. Ra1) 31...
Rb8 $1 {[%cal Rb8b1]} 32. Ra1 Rb2 {White got outplayed after the opening. 
Weighted Error Value: White=0.59/Black=0.05} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.37"]
[White "Gukesh D"]
[Black "Yakubboev, Nodirbek"]
[Result "0-1"]
[ECO "E95"]
[WhiteElo "2640"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,74,36,42,30,58,29,29,21,36,31,36,5,27,0,41,0,0,7,6,6,-2,-43,-24,-68,
-38,-37,-25,-77,0,0,0,-22,80,133,278,-312,-307,-379,-375,-514,-514,-507,-497,
-490,-490,-511,-497,-496,-497,-1092,-1094,-1050,-987,-2493,-2205,-29985,-2683]
} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O h6 8. Re1
Nbd7 9. Bf1 Re8 10. Rb1 a5 11. d5 {E95: King's Indian: Classical: 7...Nbd7 8
Re1.} Nh7 {[#]} 12. g3 $146 ({Predecessor:} 12. a3 f5 13. b4 axb4 14. axb4 f4
15. Nd2 g5 16. f3 h5 17. Bb2 Kh8 18. Ra1 Rxa1 19. Qxa1 {0-1 (32) Kamadadze,Z 
(2262)-Ismailova,P (2140) Batumi 2001}) 12... Nc5 13. Bg2 {White has an edge.}
Ng5 14. Nxg5 hxg5 15. b3 {[%cal Bb2b3,Bb3b4][%mdl 32]} g4 16. a3 a4 17. b4 Nb3
18. Be3 Bd7 19. Ne2 f5 20. Qd3 b6 21. f4 gxf3 22. Bxf3 g5 23. Kh1 {[#]} ({
Wrong is} 23. exf5 $2 e4 $19) (23. Bh5 $11 {keeps the balance.} Rf8 24. g4)
23... f4 (23... Qf6 $1 $17 24. Rg1 Kh8) 24. gxf4 $11 exf4 25. Bf2 g4 {[#]} (
25... Kh8 $11) 26. Rg1 $1 $16 gxf3 (26... Qe7 $16 27. Nxf4 (27. Bxg4 Qxe4+ 28.
Qxe4 Rxe4 $14) 27... Rf8) 27. Rxg7+ $4 {[%mdl 8192]} Kxg7 $19 28. Rg1+ {[#]}
Kh6 $1 29. Qxf3 Qe7 30. Qxf4+ Kh7 31. e5 {Be3 would kill now.} Rf8 32. Qe4+ Bf5
33. Qf3 {[%cal Rf3h5]} Kh8 {Threatens to win with ...Nd2.} 34. Nf4 (34. e6 $142
Bh7 35. Qe3 Rxf2 {[%mdl 64] Deflection} 36. Qxf2 Be4+ 37. Rg2) 34... Qh7 {
Hoping for ...Be4!} 35. Re1 Nd2 {[%mdl 64] Double Attack} 36. Qe3 Be4+ 37. Ng2
Nf3 {[%csl Gf3][%cal Rh7h2][%mdl 64] Double Attack.  Weighted Error Value:
White=0.81/Black=0.23} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.38"]
[White "Abasov, Nijat"]
[Black "Antipov, Mikhail Al."]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "2638"]
[BlackElo "2619"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,100,35,52,0,0,0,0,-8,0,0,0,0,0,-10,0,-2,-1,-21,0,0,10,0,0,-33,-44,
-32,-30,-40,10,7,19,-29,-29,-65,-57,-87,-91,-91,-84,-84,-80,-99,-87,-130,-149,
-143,-140,-223,-216,-212,-212,-192,-214,-209,-192,-273,-265,-380,-372,-428,
-406,-445,-439,-408,-437,-416,-331,-386,-354,-29972,-29973,-29972,-29974,
-29973,-29975,-29974,-29976,-29968,-29970]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 4. g3
b6 5. Bg2 Bb7 6. O-O Be7 7. d4 cxd4 8. Qxd4 d6 9. b3 O-O 10. Rd1 Nbd7 11. Bb2
a6 12. e4 Qc7 {[#]} 13. a4 $146 {A30: Symmetrical English: Double Fianchetto
and Hedgehog.} (13. Qe3 $14) ({Predecessor:} 13. h3 Rac8 14. Ba3 Nc5 15. e5
Bxf3 16. exd6 Bxd6 17. Bxf3 Rfd8 18. Qe3 Bxg3 19. fxg3 Qxg3+ 20. Kf1 Qxh3+ 21.
Ke2 {0-1 (86) Prohaszka,P (2592)-Eljanov,P (2672) Chess.com INT 2020}) 13...
Rac8 $11 14. h3 Rfd8 15. Qe3 {The position is equal.} Bf8 16. Rac1 Qb8 17. Ba3
Nc5 18. Nd2 Qa8 19. b4 Ncd7 20. Qe2 g6 21. Kh2 Re8 22. f4 h5 23. g4 hxg4 24.
hxg4 Qb8 25. Rf1 Nh7 26. g5 Rc7 27. Qg4 Qd8 28. Bb2 Bg7 29. Ba1 {Black
converts the advantage convincingly.} e5 $1 30. Nd5 Bxd5 31. exd5 exf4 32. Bxg7
Kxg7 33. Qxf4 {[#]} Ne5 $1 34. Ne4 {[#]} Nd3 $1 {[%cal Rd3f4][%mdl 64] Double
Attack} 35. Qh4 {[#]} (35. Qxd6 $17 Qxd6+ 36. Nxd6) 35... Rxe4 $1 {[%mdl 512]}
36. Qxe4 Nxc1 37. Qd4+ Kg8 38. Rxc1 Qxg5 39. Re1 (39. Rf1 $142) 39... Nf6 $19
40. Bh3 (40. Bf3 $142) 40... b5 $1 41. axb5 axb5 42. c5 dxc5 {[%mdl 64]
Overworked Piece} 43. bxc5 {[#]} Rxc5 $1 {[%mdl 512]} 44. Qxc5 {Hoping for Qd4.
} Qd2+ {[%mdl 64] Double Attack} 45. Bg2 {Re7 is the strong threat.} Qxe1 46.
Qxb5 $2 (46. Qd4 $19 Nd7 47. d6) 46... Qe5+ {Black mates.} 47. Kg1 Ng4 48. Qb6
Qe1+ 49. Bf1 Qg3+ 50. Bg2 Ne3 {[%csl Ge3][%cal Rg3g2] Weighted Error Value:
White=0.37/Black=0.04} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.39"]
[White "Dreev, Aleksey"]
[Black "Henriquez Villagra, Cristobal"]
[Result "1/2-1/2"]
[ECO "E73"]
[WhiteElo "2635"]
[BlackElo "2608"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,104,34,44,49,32,35,34,31,14,21,14,16,6,14,8,21,-3,0,-6,-7,-17,-2,-20,
6,6,3,5,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-49,-45,-39,-47,-63,-58,-77,-59,-67,-22,
-72,-23,-12,-50,-52,-49,-55,-48,-44,0,0,0,0,0,0,0,0,0,-8,-5,-8,0,0,0,0,0,0,0,
-8,0,0,0,-8,-8,-17,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6
5. Be2 O-O 6. Be3 Na6 $1 {[%mdl 4] is currently scoring better than 6...e5.
E73: King's Indian: Averbakh Variation without 6...c5.} 7. h4 h5 8. f3 c5 {
[#] White is slightly better.} 9. Qd2 $146 ({Predecessor:} 9. d5 e6 10. Nh3
exd5 11. cxd5 Bxh3 12. Rxh3 Nc7 13. Qd2 a6 14. Kf1 b5 15. a3 {1/2-1/2 (36)
Kelires,A (2530)-Kourkoulos Arditis,S (2416) Paleochora 2018}) 9... cxd4 10.
Bxd4 Nb4 11. Nh3 Bxh3 12. Rxh3 Nc6 {[#] ...Nxe4! is the strong threat.} 13.
Bxf6 Bxf6 14. g4 Bxc3 15. Qxc3 hxg4 16. fxg4 Qa5 (16... Ne5 {is more complex.}
17. O-O-O Qc7 18. g5 Rac8 19. h5 Nxc4 20. hxg6 Ne5) 17. Qxa5 Nxa5 18. Rc1 Rfc8
19. Kd2 Rc7 20. h5 Rac8 {[%cal Ra5c4]} 21. b3 Nc6 22. hxg6 fxg6 23. Rch1 Kf7
24. Rh7+ Ke6 25. Ke3 Ne5 26. Rh8 Kf6 27. Kf4 Nf7 28. Rxc8 Rxc8 $15 {[%mdl 4096]
Endgame KRB-KRN} 29. b4 b6 30. Rc1 Ng5 31. Rh1 Ra8 32. e5+ $1 dxe5+ 33. Ke3 a5
34. c5 axb4 35. Rf1+ Ke6 {[#] Threatens to win with ...Ra3+.} 36. Bc4+ {
The position is equal.} Kd7 37. cxb6 {Strongly threatening Rd1+.} Kc6 38. b7
Ra3+ 39. Bb3 $1 Kxb7 40. Rc1 Ra5 41. Rc4 Rb5 42. Ba4 Rb6 43. Rc5 Nf7 44. Bb3 e6
45. Ke4 Kb8 46. Ke3 Kb7 47. Ke4 g5 48. Ke3 Nh6 49. Kf3 e4+ 50. Kxe4 Nxg4 51.
Rxg5 Nf6+ 52. Kd4 Nd5 {Weighted Error Value: White=0.05/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.40"]
[White "Kravtsiv, Martyn"]
[Black "Moussard, Jules"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2625"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "191"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,191,10,-3,18,15,-18,-15,-12,-13,-22,-14,-33,-4,-15,-18,-13,-18,-14,17,
-31,-31,-22,-29,-31,-20,-25,-25,-28,-20,-56,-15,-26,0,0,30,0,0,0,0,0,-8,-7,0,
-18,-21,-25,-25,-25,0,-35,-25,-32,0,-75,-81,-90,-45,-40,-44,-55,-41,-45,-35,
-131,-126,-126,-60,-60,-60,-57,-20,-20,-4,-25,-22,-28,-9,-9,-7,-41,-19,-12,-12,
-29,-22,-103,-79,-79,-79,-83,-83,-93,-61,-93,-45,-45,-46,-49,-12,-50,-12,-12,
-12,-12,-12,-12,0,-12,0,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,-11,-11,-11,-11,-11,-11,-11,-11,-11,-11,-11,-11,-12,0,0,0,0,0,0,0,0,0,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000]} 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. a4 g6 5. d4 exd4 6.
Nxd4 {C47: Scotch Four Knights and Four Knights with 4 g3.} Bg7 7. Nxc6 bxc6 {
[#]} 8. Bc4 $146 {The position is equal.} ({Predecessor:} 8. Bd3 O-O 9. O-O d6
10. Bg5 h6 11. Bh4 Rb8 12. Rb1 g5 13. Bg3 Ng4 14. Be2 {0-1 (37) Ratsma,M (2245)
-Koziak,V (2425) Skalica 2020}) 8... O-O 9. O-O d6 10. Bg5 h6 11. Bf4 Re8 12.
Re1 Rb8 13. Rb1 Be6 14. Bd3 Ng4 15. Qd2 Qf6 16. h3 {[#]} g5 $1 {Strongly
threatening ...Nxf2.} 17. Bg3 (17. Bxd6 cxd6) 17... Ne5 18. Be2 Ng6 19. Nd1 Nf4
20. Bf1 Rb7 21. b3 Bd7 22. f3 Qd4+ 23. Qxd4 Bxd4+ 24. Bf2 Bxf2+ 25. Kxf2 h5 26.
Nb2 h4 27. Rbd1 f6 28. Nc4 Rbb8 29. Nb2 c5 30. Nd3 Be6 31. g3 (31. Nb2 $11)
31... hxg3+ $17 ({Reject} 31... Nxh3+ $6 32. Bxh3 Bxh3 33. gxh4 $16) 32. Kxg3
Nh5+ 33. Kf2 Kf7 34. Be2 Rh8 ({Avoid the trap} 34... Bxh3 $2 35. Rh1 $18) 35.
Rh1 $1 Nf4 36. Ke3 (36. Nxf4 $15 gxf4 37. Rh2) 36... Nxh3 37. f4 gxf4+ ({
Black should play} 37... Rbe8 $17 {Hoping for ...Bf5.} 38. fxg5 fxg5 39. Rdf1+
Kg7) 38. Nxf4 $15 Nxf4 39. Kxf4 Rbg8 40. a5 Ke7 41. Bf3 Kf8 (41... Bf7 {
looks sharper.} 42. Rdg1 Rd8 43. Bg4 Rdf8 44. Bf5 Rb8) 42. Rb1 Rxh1 (42... Ke8
{seems wilder.} 43. Rbc1 Kd8 44. Rcg1 Rf8 45. Be2 Bf7) 43. Rxh1 $11 {[%mdl
4096] Endgame KRB-KRB} Rg5 44. Rb1 Ke7 45. Rh1 Bg8 46. Rb1 Bf7 47. c3 (47. Rh1
$11 {keeps the balance.}) 47... Bh5 48. Rh1 Bxf3 49. Kxf3 $17 {KR-KR} Kd7 50.
Rh8 Kc6 51. Rb8 Rg1 52. Ke3 Ra1 53. Kd3 Rd1+ 54. Kc2 (54. Ke2 $5 {[%cal Re2d1]}
Ra1 55. Kd3 $17) 54... Rf1 (54... Re1 {feels hotter.} 55. Kd3 Ra1 56. Rf8 Rb1
57. Kc2 Rf1) 55. a6 Rf2+ 56. Kd3 Rf3+ 57. Kd2 $1 Rf2+ 58. Kd3 Rf3+ 59. Kd2 $1
c4 60. bxc4 Rf2+ 61. Kd3 Ra2 (61... Rf4 {is interesting.} 62. Rb7 Rf3+ 63. Kd4
Rf4 64. Kd3) 62. Rf8 Rxa6 63. Rxf6 Ra5 64. Kd4 Rc5 65. Rf8 Rh5 66. Rb8 a5 (
66... Ra5 {keeps more tension.} 67. Rb1 Rg5 68. Rb8 Re5 69. Rb1 Rc5) 67. Kd3
Kd7 68. Ra8 Rg5 69. Kc2 Kc6 70. Rb8 Rc5 71. Kd3 $1 Rh5 72. Kc2 Rh2+ 73. Kb3 Rh1
{[#] ( -> ...Rb1+)} 74. Rb5 Rb1+ 75. Ka4 Ra1+ 76. Kb3 a4+ 77. Kb2 Re1 78. Ra5
Re2+ 79. Ka3 Rc2 80. e5 dxe5 81. Rxe5 Rxc3+ 82. Kb4 Rc1 (82... Rb3+ {is more
complex.} 83. Kxa4) 83. Re6+ Kb7 $2 {[%mdl 8192]} (83... Kd7 $11 84. Ra6 Rh1)
84. Kxa4 Rxc4+ {Mate.} 85. Kb3 Rc6 86. Re5 Kb6 87. Kb4 Rc1 88. Re6+ c6 89. Rh6
Rb1+ 90. Kc4 Rg1 91. Rh5 Rg4+ 92. Kc3 c5 93. Rh8 Rg3+ 94. Kc4 Rg4+ 95. Kc3 Rg3+
96. Kc4 {[%mdl 32768] Weighted Error Value: White=0.15/Black=0.13. An
unexpected result.} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.41"]
[White "Nguyen, Thai Dai Van"]
[Black "Durarbayli, Vasif"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "2577"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,76,18,21,18,46,42,25,30,50,36,19,40,28,-38,-45,-41,-10,-24,-14,-18,
-7,-14,-14,-14,-17,-10,-12,-19,0,-27,-21,-32,-20,-29,-24,-24,-19,-25,0,-27,-42,
-70,-65,-96,-96,-93,0,0,0,-1,0,-5,0,-8,0,0,0,0,0,0,0,0,0]} 1. c4 c6 2. Nc3 d5
3. d4 Nf6 4. cxd5 cxd5 5. Bf4 Nc6 6. e3 a6 7. Be2 Bf5 8. Nf3 e6 9. Qb3 {
D13: Slav Defence: Exchange variation without ...Bf5.} Nh5 10. Qxb7 Na5 11. Qc7
{And now Qxd8+ would win.White has an edge.} Nxf4 12. Qxd8+ $1 Rxd8 13. exf4
Rb8 {[#]} 14. Nd1 $146 (14. O-O-O $11) ({Predecessor:} 14. O-O-O Bb4 15. Bd3
Bxc3 16. bxc3 Bxd3 17. Rxd3 Nc4 18. Ne5 Na3 19. Rhd1 f6 20. Nc6 {0-1 (67)
Volkov,S (2619)-Bluebaum,M (2957) Chess.com INT 2019}) 14... Bb4+ $15 {[%mdl
1024] Black has compensation.} 15. Kf1 Ke7 16. Ne3 Be4 17. Ng5 Bg6 18. f5 (18.
g3 {with more complications.} Bd6 19. b3 Nc6 20. Rd1 h6 21. f5) 18... Bxf5 19.
Nxf5+ exf5 20. Nf3 Bd6 21. b3 Rb6 22. Bd3 Kf6 23. g3 Nc6 24. Rc1 g5 25. h3 h5
26. Kg2 Re8 27. Rhd1 g4 28. Nh4 f4 29. hxg4 hxg4 30. gxf4 Nxd4 ({Black should
try} 30... Bxf4 $17 31. Rc5 Ne7) 31. Kg3 $11 {The position is equal.} Rb4 {
White must now prevent ...Bxf4+!} (31... Ne6 $5 32. Ng2 $8 Nxf4 $1 33. Nxf4 Kg5
$11) 32. Ng2 a5 33. Rh1 ({Not} 33. Ne3 $2 {[#]} Bxf4+ $1 {[%mdl 512]} 34. Kg2
Bxe3 $19) 33... Ne6 {[%cal Re6f4]} 34. Rh6+ Ke7 {[%cal Re6f4]} 35. Re1 $1 Kd8 {
[%cal Rd6f4]} 36. Rf6 Ke7 37. Rh6 Kd8 {[%cal Rd6f4]} 38. Rf6 Ke7 {Weighted
Error Value: White=0.08/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.42"]
[White "Suleymanli, Aydin"]
[Black "Gelfand, Boris"]
[Result "1/2-1/2"]
[ECO "E36"]
[WhiteElo "2541"]
[BlackElo "2680"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,76,16,11,18,29,22,15,25,23,22,10,19,0,0,0,0,0,0,0,0,0,-5,-16,-14,-16,
-10,-26,-19,-21,-15,-14,-12,-16,-8,-8,-8,-8,-6,-11,-8,-8,-7,-9,0,0,0,0,0,0,0,0,
0,0,0,-9,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3
Bxc3+ 6. Qxc3 d5 7. Bg5 h6 {E36: Nimzo-Indian: Classical: 4...d5 5 a3.} 8. Bxf6
Qxf6 9. Nf3 dxc4 $1 {9...dxc4 scores better than 9...c6.} 10. Qxc4 Nc6 11. Qc3
Re8 12. e3 e5 13. Nxe5 Nxe5 14. dxe5 Qxe5 15. Qxe5 Rxe5 {[#]} 16. O-O-O $146 ({
Predecessor:} 16. Rc1 c6 17. Bc4 Kf8 18. Ke2 Be6 19. Rhd1 Ke7 20. Bxe6 Rxe6 21.
f3 a5 22. Rc4 {1/2-1/2 (40) Bok,B (2624)-Sevian,S (2647) Krasnaya Polyana 2021}
) 16... Be6 17. Kb1 Kf8 18. Be2 Bd5 19. Rhg1 Ke7 20. Bd3 {The position is
equal.} Rd8 21. Bc2 Rd6 22. Rd3 Be4 23. Rxd6 Bxc2+ 24. Kxc2 Rc5+ 25. Kd3 Kxd6
$11 {[%mdl 4096] Endgame KR-KR} 26. e4 a5 27. b4 axb4 28. axb4 Rh5 29. h3 Rb5
30. Rd1 c5 ({Wrong is} 30... Rxb4 $2 31. Kc3+ Ke5 32. Kxb4 $18) 31. Kc4+ Kc6
32. bxc5 Rxc5+ 33. Kb3 Re5 34. Rd4 b5 35. f3 Re8 36. Rd5 Ra8 37. Rf5 Ra7 38. h4
f6 {A rather calm draw.  Weighted Error Value: White=0.02/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.43"]
[White "Van Foreest, Jorden"]
[Black "Adly, Ahmed"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2691"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,81,18,12,0,25,-12,-26,-44,-25,-26,21,26,27,-15,32,37,127,155,189,58,
227,176,218,94,92,52,64,60,219,221,230,216,225,223,213,213,245,248,245,245,239,
235,280,280,280,280,280,275,262,214,231,215,280,215,335,330,487,486,527,525,
525,533,525,517,530,522,522,520,484,367,367,364,566,556]} 1. e4 c6 2. d4 d5 3.
e5 Bf5 4. h4 h5 5. Bd3 Bxd3 6. Qxd3 {B12: Caro-Kann: Advance Variation.} Qa5+ {
now scores much better than the old 6...e6.} 7. b4 Qxb4+ 8. Nd2 {Strongly
threatening Rb1.Black has an edge.} e6 9. Rb1 Qa5 10. Rxb7 {[#]} c5 $146 ({
Predecessor:} 10... Nd7 11. Ngf3 c5 12. c3 c4 13. Qc2 Ne7 14. Rb1 Nf5 15. Ng5
Be7 16. Ndf3 Bxg5 17. Bxg5 {0-1 (40) Kobo,O (2449)-Shuvalova,P (2454) Chess.
com INT 2020}) 11. Nh3 {Threatens to win with Ng5.} (11. c3 {keeps more
tension.} Nd7 12. Nh3 Qa4 13. O-O Qc6 14. Qb5) 11... Nd7 (11... c4 {looks
sharper.} 12. Qf3 Nh6 13. Ng5 Be7 14. Qxh5 Qa6) 12. O-O {aiming for Ng5.} Qa4 (
12... c4 $1 $14 13. Qf3 Qxa2) 13. c4 $1 $36 {[%mdl 2048] White is really
pushing.} Qc6 14. Rb1 (14. cxd5 $1 $18 Qxb7 15. dxe6 fxe6 16. Qg6+ Kd8 17. Nc4)
14... Nh6 $2 (14... Ne7 $1 $14) 15. cxd5 Qxd5 {[#]} 16. Nc4 (16. Nf3 $1 $18 {
and the rest is easy.}) 16... Nf5 17. Nf4 Qxd4 18. Qe2 $1 {Rd1 is the strong
threat.} Rd8 $2 {White now steadily converts the win.} (18... Nb6 $1 $14 19.
Rxb6 (19. Nxb6 axb6 20. Rxb6 Qa4 $11) 19... axb6) 19. Rd1 $18 Ng3 20. Qc2 Qe4
21. Qxe4 Nxe4 {[#]} 22. Ne2 Nb6 23. Rxd8+ Kxd8 24. Nxb6 axb6 25. f3 ({But not} 
25. Rxb6 $6 c4 $16) 25... c4 {White should prevent ...Bc5+.} 26. fxe4 Bc5+ 27.
Kf1 Kc7 28. Nc3 Kc6 29. Ke2 Rd8 30. Bf4 f6 31. Rd1 Ra8 (31... Rg8 $142 32. a4
fxe5) 32. a4 Bb4 {[#]} (32... g5 $142 33. Bd2 (33. exf6 gxf4 34. e5 Bb4 $14)
33... Rf8) 33. Rd4 $1 Bxc3 (33... Bc5 34. Rxc4) 34. Rxc4+ {[%mdl 64] Double
Attack} Kd7 35. Rxc3 Rxa4 {[%mdl 4096] Endgame KRB-KR} 36. Kf3 b5 37. exf6 gxf6
38. Rc7+ Ke8 39. Rb7 Ra3+ 40. Be3 Rb3 (40... e5 $142 41. Rh7 Kf8 42. Rxh5 b4)
41. Rh7 {Weighted Error Value: White=0.18/Black=0.48} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.44"]
[White "Bartel, Mateusz"]
[Black "Adhiban, B.."]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2597"]
[BlackElo "2672"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,-20,15,-10,2,-8,0,-4,-4,-1,12,8,22,0,7,10,13,0,17,0,0,0,0,-24,-13,
-7,-13,-19,-33,-35,-8,-10,0,-17,-8,-16,-20,-20,-20,-32,0,0,0,0,0,0,0,0,0,0,0,0,
0,0]} 1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 4. Nb5 Na6 5. e3 Bg7 6. Nf3 {A45:
Trompowsky Attack.} O-O {6...0-0 scores better than 6...c6.} 7. h3 c6 8. Nc3
Qb6 9. Rb1 c5 10. Be5 cxd4 {[#]} 11. Qxd4 $146 ({Predecessor:} 11. exd4 e6 12.
Bd3 Nb4 13. O-O Bd7 14. Re1 Rfc8 15. Bf1 Be8 16. a3 Nc6 17. Bf4 {0-1 (37)
Hobber,A (2312)-Ostenstad,B (2447) Sarpsborg 2018}) 11... Qxd4 12. Nxd4 e6 13.
Bb5 Rd8 14. Bxa6 bxa6 15. Nc6 Re8 16. Bd4 Bd7 17. Ne5 Rec8 18. O-O Bb5 19. Rfd1
Ne8 20. a4 Bc6 21. Nxc6 (21. f3 {feels hotter.} Bb7 22. Nd3 Nd6 23. Kf2 f6 24.
Bc5) 21... Rxc6 22. Bxg7 Kxg7 23. e4 $1 dxe4 24. Nxe4 Rxc2 (24... Rc4 $5 {
[%cal Rc4e4]} 25. Nc3 Rb8 $15) 25. Rd7 {The position is equal.} Nf6 26. Nxf6
Kxf6 27. b4 Rac8 28. Rxa7 Rc1+ 29. Rxc1 Rxc1+ 30. Kh2 Rb1 31. Rxa6 {An
uneventful encounter.  Weighted Error Value: White=0.06/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.45"]
[White "Cheparinov, Ivan"]
[Black "Goryachkina, Aleksandra"]
[Result "1-0"]
[ECO "D16"]
[WhiteElo "2659"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,135,20,9,15,10,20,0,0,0,0,0,0,0,19,24,16,14,181,179,172,178,165,162,
206,114,125,104,95,72,77,81,66,14,25,0,202,143,198,207,199,188,196,182,212,137,
159,137,139,139,262,161,250,139,159,147,194,194,194,133,144,12,19,10,10,10,27,
10,59,14,14,14,17,17,17,16,37,14,66,66,135,86,976,1000,787,886,722,775,1311,
1360,1306,994,2397,2206,2355,1541,1451,1434,936,906,1815,1339,2393,2312,2730,
7797,29973,29974,29982,29983,29984,29985,29985,29986,29986,29987,29988,29986,
29986,29985,29987,29988]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 e6 6.
e3 c5 7. Bxc4 cxd4 {seems to push 7...Nc6 aside.} 8. exd4 Nc6 9. O-O Be7 {
D16: Slav Defence: 5 a4: Lines with 5...Bg4 and 5...Na6.} 10. Qe2 O-O 11. Be3
b6 {The position is equal. has lost popularity (11...Nb4).} 12. Rad1 Nb4 13.
Ne5 Bb7 14. f4 {[#]} Ne4 $146 ({Predecessor:} 14... Bd5 15. Nxd5 exd5 16. Bb3
Ne4 17. Qh5 Rc8 18. Rc1 Bf6 19. Qh3 Rxc1 20. Rxc1 Bxe5 21. fxe5 {1/2-1/2 (71)
Ponomariov,R (2744)-Shirov,A (2722) Wijk aan Zee 2011}) 15. f5 exf5 16. Qh5 (
16. Rxf5 Nd6 $15) 16... Nd5 $2 (16... Bd5 $11) 17. Nxe4 $1 $18 g6 (17... Nxe3
$2 18. Ng5 $1 $18 {[%mdl 512]}) 18. Qh6 fxe4 {[#]} 19. Nxf7 $1 {[%mdl 512]} Qd7
{[#]} (19... Qc8 20. Rc1) 20. Ng5 (20. Ne5 $6 Qe6 $16) (20. Rf2 $1 $18 {
aiming for Rdf1.} Rac8 {[#]} (20... Bf6 21. Rxf6) 21. b3 $1 (21. Ne5 Qxa4 22.
Rc1 Rxf2 $11) 21... Rxc4 22. Ne5 {[%mdl 64] Double Attack} Rxf2 23. Nxd7 (23.
Bxf2 Qf5 $16) 23... Nxe3 24. Qxe3) 20... Bxg5 $16 21. Bxg5 e3 22. Bxe3 $40 {
[%mdl 128] Threatens to win with Bf4. White is out for blood.} Qxa4 23. b3 Qd7
24. Qh4 ({White should play} 24. b4 $1 $14) 24... b5 $11 {[#]} 25. Bh6 $1 bxc4
$2 (25... Rxf1+ $11 {and Black stays safe.} 26. Bxf1 Re8) 26. Bxf8 {Strongly
threatening Bh6.} Rxf8 (26... Ne3 $16 27. Bh6 Nxf1 28. Rxf1 Qd5) 27. Rxf8+ $18
({Much less strong is} 27. bxc4 $6 Rxf1+ 28. Rxf1 Ba6 $14) 27... Kxf8 28. bxc4
{Hoping for Re1.} Ne7 29. d5 {[%mdl 1024] White has strong compensation.} ({
But not} 29. Qxh7 $6 Bxg2 30. Qh4 Bh3 $16) 29... Nf5 30. Qf6+ Kg8 31. Re1 {
g4 is the strong threat.} Qc8 32. Kh1 Qf8 (32... a5 $16 {might work better.}
33. g4 Ne3) 33. Qe5 h5 (33... Bc8 {was necessary.} 34. Qc7 Nd6) 34. Qc7 (34. c5
$18) 34... Qf7 $16 35. Qb8+ Kg7 36. Qxa7 h4 37. Rb1 (37. h3 $18) 37... Bc8 38.
Qb8 ({Better is} 38. Ra1 $16) 38... Qe8 $1 $11 39. Qc7+ Kh6 $1 40. Qf4+ g5 $1 {
[%cal Rg5f4]} 41. Qf3 {Threatening c5.} g4 42. Qc3 h3 43. Re1 hxg2+ 44. Kxg2
Qf8 45. Kh1 {And now c5 would win.} Kg6 46. Qe5 {Black must now prevent Qf4.}
Bd7 (46... Qc5 $1 $11) 47. Qf4 $14 Kh5 {White now steadily converts the win.}
48. Re4 Qg8 {[%mdl 8192]} (48... Qg7 $16) 49. h3 $1 $18 {[%cal Rh3g4]} Qh8 50.
hxg4+ Kg6+ 51. Kg2 Qb2+ 52. Qf2 Qxf2+ 53. Kxf2 Nh6 54. Kg3 Kg5 55. Re5+ Kf6 56.
Rh5 Nxg4 57. Kf4 Nf2 58. Ke3 Ng4+ 59. Kd4 Ke7 60. Rh7+ (60. c5 $142 Nf6 61.
Re5+ Kd8 62. c6) 60... Kd8 61. c5 {[%cal Bc4c5,Bc5c6][%mdl 32] White mates.}
Nf6 62. Rf7 Ne8 63. c6 Bg4 64. Kc5 Bh3 65. d6 Be6 66. Ra7 Nf6 67. Ra8+ Bc8 68.
Kd4 {Weighted Error Value: White=0.25/Black=0.36} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.46"]
[White "Rakhmanov, Aleksandr"]
[Black "Georgiev, Kiril"]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "2657"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,105,33,24,25,33,37,20,27,25,29,30,21,32,34,0,10,0,32,12,21,12,24,0,0,
0,39,0,31,19,59,60,60,0,8,0,59,71,125,127,101,88,100,85,107,106,114,112,132,0,
121,111,121,121,118,116,117,104,98,77,90,91,121,118,219,216,207,220,626,626,
626,626,626,626,605,570,570,572,755,756,757,730]} 1. c4 Nf6 2. Nc3 c5 3. Nf3
Nc6 4. g3 d5 5. d4 e6 6. cxd5 exd5 7. Bg2 Be7 8. O-O O-O 9. Bg5 cxd4 10. Nxd4
h6 11. Be3 Re8 12. Rc1 Bf8 13. Nxc6 bxc6 14. Bd4 Nd7 {D34: Tarrasch Defence: 6
g3 Nf6 7 Bg2 Be7.} 15. Na4 Ba6 16. Re1 Bb5 {[#] The position is equal.} 17. Nc3
$146 ({Predecessor:} 17. Nc5 Bxc5 18. Bxc5 Qa5 19. Bd4 Qxa2 20. Ra1 Qc4 21. b3
Qb4 22. Rxa7 Rxa7 23. Bxa7 {0-1 (42) Maslik,M (2273)-Ljubicic,F (2396) Pula
2007}) 17... Bc4 18. b3 Ba6 19. Na4 Bb5 20. Nc3 Ba6 21. Na4 Bb5 22. Ba1 Rc8 23.
Bh3 Rb8 24. Bf5 Bxa4 25. bxa4 Nc5 26. Bb1 Qa5 27. e3 Re6 28. Bf5 Ree8 29. Bb1 (
{Better is} 29. Re2 $14) 29... Re6 $11 30. Bf5 (30. Kg2 $11) 30... Ree8 $14 31.
Re2 Nxa4 (31... Rb7 $142) 32. Rxc6 $16 Rb6 33. Rxb6 Nxb6 34. Bb1 Qb4 35. Rb2
Qc4 36. Rc2 Qb5 37. Rb2 Qc4 38. Bd3 Qc5 39. Rc2 Qa3 40. Bd4 Rc8 41. Rxc8 Nxc8
42. Bb1 {[#] aiming for Qc2.} Nb6 43. h4 h5 44. Kg2 Qb4 (44... g6 $16 {might
work better.}) 45. a3 $1 $40 {[%cal Ra3b4,Ba2a3,Ba3a4][%mdl 160] White has
strong attack.} Qb5 {[#]} 46. Bd3 {[%cal Rd3b5]} Nc4 $2 (46... Qc6 47. Qxh5 Qh6
) 47. a4 {White is clearly winning.} Qa6 48. Qf3 Qh6 49. Qxd5 Nb6 50. Qb5 Nc8
51. a5 Ne7 52. Bxa7 Qd6 53. Be4 {Weighted Error Value: White=0.14/Black=0.24}
1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.47"]
[White "Gretarsson, Hjorvar Steinn"]
[Black "Paravyan, David"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2577"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "207"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,207,0,4,4,6,16,0,0,0,0,0,2,-16,-12,-9,-11,-37,-8,-18,0,0,0,-10,-8,
-10,-10,-10,-10,-10,52,52,112,97,101,87,87,77,103,72,80,81,172,167,215,198,232,
240,281,75,75,75,76,98,134,134,101,113,203,200,296,307,282,282,448,448,448,443,
408,387,243,8,8,8,8,8,8,0,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,8,8,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,0,8,0,0,0,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,8,
8,8,8,8,8,8,8,8,8,8,0,0,0,8,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7
7. Be3 c5 8. Nf3 Nc6 9. Qd2 cxd4 10. cxd4 Bg4 {10...Bg4 scores better than 10..
.0-0.} 11. Rd1 O-O 12. Be2 Qa5 {D85: Exchange Grünfeld: Unusual White 7th
moves and lines with 7 Nf3.} 13. O-O Rac8 14. h3 Bxf3 15. Bxf3 Qxd2 16. Rxd2
Na5 {[#]} 17. Be2 $146 ({Predecessor:} 17. Rd3 Rfd8 18. d5 b6 19. Rc1 Rxc1+ 20.
Bxc1 Be5 21. Bg5 Kf8 22. Bh6+ Ke8 23. Bg4 {1/2-1/2 (59) Melkumyan,H (2650)
-Paravyan,D (2602) Douglas 2019}) 17... Nc4 18. Bxc4 Rxc4 19. Rfd1 Rfc8 20. f4
Rc3 21. Kf2 Ra3 22. d5 Bc3 23. Rd3 Rxa2+ 24. Kf3 {Hoping for Rc1.} Bb4 25. e5
Rd8 (25... b6 $11) 26. Rb1 $14 a5 (26... Ra4 $14) 27. Bb6 $1 $16 {[%cal Rb6d8]}
Rd7 {[#]} 28. Rc1 $1 Ra3 29. Rxa3 Bxa3 {[%mdl 4096] Endgame KRB-KRB} 30. Rc8+
Kg7 31. Ke4 Bb2 {[#]} (31... a4 $16) 32. Rc2 $1 $18 {[%cal Rc2b2]} (32. Bxa5 $6
f5+ 33. exf6+ Bxf6 $14) 32... Ba3 33. g4 (33. Bxa5 b5) 33... f5+ 34. gxf5 gxf5+
35. Kd4 $2 (35. Kxf5 $18 Rxd5 36. Ke6) 35... e6 $16 36. d6 Bxd6 37. Rg2+ ({
Don't go for} 37. exd6 $2 Rxd6+ 38. Ke5 Rxb6 $19) 37... Kh6 {And now ...Bc7+
would win.} 38. exd6 Rxd6+ {KRB-KR} 39. Kc5 Rd7 (39... Rd3 $16) 40. Re2 $18 Rd3
(40... Kh5 {is a better defense.} 41. Rxe6 (41. Bxa5 Rd5+ 42. Kb6 Rd3 $16)
41... a4) 41. Rxe6+ Kh5 42. Re7 ({Don't play} 42. Bxa5 $6 Rxh3 43. Kd4 Kg4 $18)
42... h6 (42... Rf3 $142 43. Bxa5 h6 44. Rxb7 Rxf4) 43. Bxa5 Rxh3 44. Rg7 Rd3
45. Kc4 Rd6 46. Rxb7 $2 (46. Bc7 $18 Rg6 47. Rxg6 Kxg6 48. Bd6) 46... Kg4 $11 {
The position is equal.} 47. Rg7+ Kf3 48. Bc7 Rd2 49. Kc3 Rd1 50. Be5 h5 51. Rg5
h4 52. Rxf5 {aiming for Rh5.} h3 53. Rh5 Kg3 54. Rg5+ Kf3 55. Rh5 Kg3 56. Rh7 {
Threatens to win with f5+.} (56. Kc2 {looks sharper.} Rd5 57. Rg5+ Kf3 58. Rg7
h2 59. Rh7) 56... h2 57. f5+ Kg4 58. Rxh2 Kxf5 59. Bd4 Ke4 60. Re2+ Kd5 61.
Re5+ Kd6 62. Rh5 Rc1+ 63. Kd3 Rd1+ (63... Ke6 {seems wilder.} 64. Ke3 Re1+ 65.
Kf4 Kd6 66. Ra5 Rf1+) 64. Ke4 Re1+ 65. Be3 Ke6 66. Rh6+ Ke7 67. Ra6 (67. Kf4 {
is interesting.} Kd7 68. Rg6 Ke7 69. Ra6 Kd7 70. Rh6) 67... Re2 68. Kd4 Kf7 69.
Bf4 Re6 70. Ra1 Re2 71. Kd5 Kf6 72. Rf1 Kf5 (72... Ra2 {seems wilder.} 73. Kc4
Kg6 74. Kd3 Ra3+ 75. Kc4 Ra4+) 73. Be3+ Kg6 74. Rf3 Ra2 75. Bd4 Kg5 76. Ke4 Ra4
77. Rg3+ Kh4 78. Rg8 Rb4 79. Ke5 Kh3 80. Be3 Rg4 (80... Ra4 {is interesting.}
81. Kd6 Ra6+ 82. Kc7 Ra5 83. Rg1 Ra6) 81. Ra8 Kg2 82. Bf4 Rg7 83. Ke4 Re7+ 84.
Be5 Kf2 85. Ra2+ Ke1 86. Rb2 Re8 87. Kd4 Kf1 88. Bf4 Re2 (88... Kg1 {keeps
more tension.} 89. Be3+ Kf1 90. Bf4) 89. Bd2 Kg2 90. Kd3 Kf3 91. Rb4 {White
threatens Rf4+ and mate.} Re6 92. Rf4+ (92. Bc1 {seems wilder.} Rd6+ 93. Kc2
Rd8 94. Ba3 Rc8+ 95. Kb1) 92... Kg3 93. Be3 Ra6 94. Rf7 Kg4 95. Kd4 Ra4+ 96.
Ke5 Ra5+ 97. Ke4 Ra4+ 98. Bd4 Rb4 99. Ra7 (99. Ke5 {feels hotter.} Rb1 100. Ke4
Re1+ 101. Be3 Rb1 102. Rh7) 99... Kg5 100. Rc7 Kg4 101. Rc1 Ra4 102. Ke5 Ra5+
103. Bc5 Ra4 104. Bd4 {Black defended with fortune.  Weighted Error Value:
White=0.18/Black=0.16} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.48"]
[White "Miezis, Normunds"]
[Black "Kovalev, Vladislav"]
[Result "0-1"]
[ECO "A26"]
[WhiteElo "2467"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,114,0,8,11,39,-8,3,-26,13,2,7,-17,-12,-6,11,0,0,-13,58,56,57,50,52,
52,56,67,117,43,110,58,45,62,136,129,115,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-1,0,0,0,-16,-20,-23,-8,-8,-8,-8,0,-5,-6,-310,-312,-423,-333,-295,-234,-233,-8,
-551,-225,-592,-582,-6605,-5222,-29972,-29973,-29973,-29974,-29973,-29975,
-29975,-29976,-29976,-29976,-29976,-29977,-29987,-29988,-29988,-29989,-29989,
-29990]} 1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 d6 5. e4 Nc6 6. Nge2 f5 7. d3 Nge7
8. O-O O-O 9. f4 Be6 10. Nd5 {A26: English Opening vs King's Indian with ...
Nc6 and d3.} Rb8 $5 {[%mdl 4] [#] A promising side line.} 11. a4 $146 ({
Predecessor:} 11. Be3 a6 12. Rb1 b5 13. b3 Qd7 14. Qd2 fxe4 15. dxe4 bxc4 16.
bxc4 Bg4 17. Nec3 Kh8 18. Nxe7 Qxe7 {1-0 (52) Hundack,R (2196)-Hampel,F (2091)
Germany 2013}) 11... a5 12. Nec3 {The position is equal.} h6 13. Be3 exf4 14.
gxf4 Nb4 15. Qd2 Qd7 16. Rae1 Rbe8 17. b3 c6 (17... Nexd5 $11 18. Nxd5 Bxd5 19.
exd5 Re7) 18. Nxb4 $1 $14 axb4 19. Ne2 c5 20. e5 $1 Rd8 21. d4 cxd4 22. Qxd4 (
22. Nxd4 $16 dxe5 23. fxe5) 22... dxe5 (22... Nc8 $1 $14) 23. Qxd7 ({White
should try} 23. fxe5 $16 Bf7 24. Bf2) 23... Rxd7 24. fxe5 g5 (24... Bxe5 $14
25. Bxh6 Re8) 25. Nd4 $16 Kf7 26. Bh3 ({White should play} 26. Nxe6 $16 Kxe6
27. Bc5) 26... Rfd8 $11 27. Nxf5 Bxf5 28. e6+ Kg6 $1 29. Bxf5+ (29. exd7 $2 {
loses.} Bxh3 30. Rf3 Bg4 $19) 29... Nxf5 30. exd7 {Strongly threatening Bc5.}
Nxe3 31. Rxe3 {[%mdl 4096] Endgame KRR-KRB} Bd4 32. Kf2 Rxd7 33. Ke2 Bxe3 34.
Kxe3 {KR-KR} h5 35. Rf8 h4 36. Rg8+ Kf5 37. h3 (37. a5 {looks sharper.} g4 38.
Rf8+ Kg5 39. Rg8+ Kf5) 37... Rd1 {Hoping for ...Rh1.} 38. Rf8+ $1 Ke6 {
Threatens to win with ...Rb1.} 39. Re8+ Kd7 40. Rg8 Rb1 41. Kd4 ({Much worse is
} 41. Rg7+ Kc6 $15) 41... Rxb3 42. Rg7+ $2 {[%mdl 8192] [#]} (42. Rxg5 $11 Rxh3
43. Rg7+ Kc8 44. Rg8+ Kc7 45. Kc5) 42... Kc8 $1 $19 43. Rg8+ Kc7 44. Rg7+ {[#]}
Kb8 $1 45. Kc5 {intending Kb6.} Ka7 (45... Rxh3 $19 {White must now prevent ...
b3.} 46. Rxg5 b3) 46. a5 $2 {[%mdl 8192]} (46. Kb5 $1 $11 {and White stays
safe.}) 46... Rxh3 {...b3 is the strong threat.} 47. Kxb4 (47. Rxg5 {was the
crucial defense.} Rg3 48. Rf5) 47... Rg3 48. Kb5 h3 49. a6 Rb3+ {Black mates.}
50. Kc5 Rb1 51. Rh7 g4 52. axb7 Rxb7 53. Rh4 Rg7 54. Kd6 g3 55. c5 g2 56. Ra4+
Kb8 57. Rb4+ Kc8 {Weighted Error Value: White=0.56/Black=0.16} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.49"]
[White "Martirosyan, Haik M."]
[Black "Neiksans, Arturs"]
[Result "1/2-1/2"]
[ECO "E18"]
[WhiteElo "2624"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,80,20,20,0,11,0,18,0,7,5,1,-19,-12,-29,-32,-18,0,0,0,-27,-19,-29,-15,
-41,-35,-24,0,0,0,0,0,-7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8.
Bd2 Bf6 9. Rc1 d6 10. Ne1 Nxc3 11. Bxc3 Bxg2 12. Nxg2 c5 {[#]} 13. Ne3 $146 {
E18: Queen's Indian: Old Main Line (4 g3 Bb7 5 Bg2 Be7 6 0-0 0-0 7 Nc3).} ({
Predecessor:} 13. d5 Bxc3 14. Rxc3 e5 15. e4 Qe8 16. g4 Qe7 17. h4 Nd7 18. Qd2
g6 19. Qh6 Nf6 20. f3 Kh8 {1-0 (39) Theodorou,N (2569)-Rozman,L (2353)
Charlotte 2021}) 13... Qe7 14. d5 Nd7 15. dxe6 fxe6 16. Ng4 Rad8 17. Qd2 Bxc3
18. Rxc3 h5 19. Ne3 Nf6 {And now ...Ne4 would win.} 20. Rd3 Qf7 21. f3 d5 22.
cxd5 exd5 23. Nf5 d4 24. Qg5 Kh7 25. e4 {The position is equal.} dxe3 26. Rxe3
Qg6 27. h4 (27. Qxg6+ {feels hotter.} Kxg6 28. Ne7+ Kh7 29. Rf2 Rd1+ 30. Kg2)
27... Qxg5 (27... Rd2 {seems wilder.} 28. Rb1 Nd7 29. g4 Qxg5 30. hxg5 Kg6) 28.
hxg5 Nd5 29. Re5 Rxf5 {[%mdl 64] [#] Remove Defender, Decoy} 30. Rxf5 $11 {
[%mdl 4096] Endgame Strongly threatening Rd1. KRR-KRN} Ne3 {[%csl LRf1,LRf5]
[%mdl 64] Double Attack} 31. Rf7 Nxf1 32. Kxf1 {KR-KR} Rd2 33. Rxa7 Rxb2 34. a4
Kg6 (34... c4 {with more complications.} 35. Rc7 Rb4 36. Rc6 Rxa4 37. Rxb6 Ra5)
35. a5 bxa5 36. Rxa5 Rc2 37. Ra7 c4 38. Ra5 c3 {[#] ...Rh2 is the strong
threat.} 39. Rc5 Rd2 {aiming for ...c2.} 40. Rxc3 Kxg5 {Weighted Error Value:
White=0.04/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.50"]
[White "Sethuraman, S.P.."]
[Black "Van Foreest, Lucas"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2620"]
[BlackElo "2543"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,132,50,9,65,59,73,30,56,45,52,55,50,47,70,45,34,41,88,79,93,93,92,89,
95,67,68,58,65,50,45,54,53,41,66,72,88,64,106,103,106,106,98,106,108,104,123,
104,122,107,91,100,143,143,237,243,237,230,242,264,280,267,269,249,243,231,364,
368,356,352,398,402,411,408,421,421,546,546,539,539,526,502,470,455,445,442,
786,768,734,727,714,644,622,613,637,608,1730,538,1319,1705,1705,1309,29966,
29967,29974,29975,29977,29978,29981,29982,29984,29985,29986,29987,29988,29989,
29989,29990,29994]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 c5 5. Nf3 O-O 6. Bg2 d6
7. O-O Bxc3 8. bxc3 Nc6 9. Bf4 Nh5 {E20: Nimzo-Indian: 4 g3 and 4 f3.} (9... h6
$11) 10. Bg5 {[#]} Nf6 $146 ({Predecessor:} 10... Qc7 11. Nd2 h6 12. e3 Nxg3
13. fxg3 hxg5 14. Qh5 Qe7 15. Ne4 f5 16. Nxg5 g6 17. Qxg6+ {1/2-1/2 (33)
Plachetka,J (2412)-Markos,J (2559) Banska Stiavnica 2007}) 11. Nd2 h6 $1 {
[%cal Rh6g5] White has an edge.} 12. Bxf6 Qxf6 13. Bxc6 bxc6 14. Ne4 Qe7 15.
Qa4 cxd4 16. Qxc6 Bb7 17. Qxd6 Rae8 18. Qxe7 $1 Rxe7 19. Nd6 dxc3 20. Rfc1 Rd8
21. c5 Ba6 $1 22. Kf1 Rb8 $1 23. Rxc3 Rb2 24. Nc4 Bxc4 25. Rxc4 $14 {[%mdl
4096] Endgame KRR-KRR} Kf8 26. a4 Ke8 27. Rd1 Rc7 28. Rd6 Ke7 29. Ra6 Rd2 30.
f4 Kd7 31. Ke1 Rd5 32. e4 Rd3 33. e5 Ke7 34. Rd6 Rd5 (34... Rb3 $16 35. c6 a5)
35. Rxd5 $18 exd5 {KR-KR} 36. Rc1 Kd7 37. Kd2 Kc6 {[#]} 38. Rb1 d4 39. Kd3 Kd5
40. Rb4 Rxc5 (40... Re7 $142 41. c6 (41. Rxd4+ Kxc5 42. Rc4+ Kd5 $16) 41...
Kxc6 42. Kxd4 (42. Rxd4 Kc5 $16) 42... g6 43. Rc4+ Kd7) 41. Rxd4+ Ke6 {[#]} 42.
Rd6+ Kf5 43. Rd7 $1 {[%csl LRa7,LRf7][%mdl 64] Double Attack} f6 44. Rxa7 fxe5
45. fxe5 Rc1 46. Rxg7 Ra1 47. Rf7+ Kxe5 48. Rf4 Ra3+ 49. Ke2 Ra2+ 50. Kf3 Rxh2
(50... Ke6 $142 51. Rh4 Kf5) 51. Rh4 Ra2 52. Rh5+ Kf6 53. Rxh6+ Kg5 54. Rh4 Ra1
55. Rb4 Ra3+ 56. Kf2 (56. Ke4 $142 Rxg3 57. Kd5) 56... Ra2+ 57. Ke3 Ra3+ 58.
Kd4 Rxg3 59. Kc5 {White mates.} Kf5 60. a5 {[%cal Ba4a5,Ba5a6,Ba6a7][%mdl 32]}
Ke6 61. a6 Kd7 62. a7 Ra3 63. Kb6 Kc8 64. Rb5 Ra1 65. Rc5+ Kd7 66. Ra5 Ra2 {
Weighted Error Value: White=0.14/Black=0.22} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.51"]
[White "Zvjaginsev, Vadim"]
[Black "Vokhidov, Shamsiddin"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2609"]
[BlackElo "2521"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,115,-13,0,0,8,2,18,0,0,0,0,0,0,0,0,-14,0,-28,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,-6,-18,0,0,0,-19,-24,-21,0,0,0,-61,-60,-62,-57,-66,-66,-62,-60,-62,-62,
-54,-53,-52,-40,-78,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,16,17,
17,98,97,97,98,97,100,97,94,97,97,97,97,365,192,300,260,260,260]} 1. c4 e5 2.
Nc3 Nf6 3. Nf3 Nc6 4. a3 d5 5. cxd5 Nxd5 6. Qc2 Nxc3 7. dxc3 {A28: English
Opening: Four Knights Variation.} Qf6 (7... Be7 {seems wilder.} 8. e4 Qd6 9.
Be3 O-O 10. b4 Rd8) 8. e4 {[#]} Bc5 $146 ({Predecessor:} 8... Qg6 9. Be3 Bd6
10. Nh4 Qh5 11. Nf5 O-O 12. Be2 Qg6 13. Bf3 Ne7 14. g4 Qe6 {0-1 (46)
Drozdowski,K (2612)-Matlakov,M (2705) Chess.com INT 2017}) 9. Be2 {The
position is equal.} a5 10. O-O h6 11. Be3 Bxe3 12. fxe3 O-O 13. Bc4 Qe7 14. Qf2
Be6 15. Bd5 Bxd5 16. exd5 Nb8 17. b4 Nd7 18. e4 Ra6 19. Rae1 axb4 20. axb4 Rfa8
21. Nh4 g6 22. Qg3 Kh7 23. h3 Ra3 24. Kh2 R8a6 25. Rf3 (25. Qf2 {is
interesting.} Rf6 26. Qb2 Ra4 27. Nf3 Kg7 28. Ra1) 25... Rf6 26. Ref1 Rxf3 (
26... Raa6 {looks sharper.} 27. Rxf6 Nxf6 28. Qd3 Ra3 29. Nf3 b5) 27. Qxf3 Kg8
28. Qg4 ({White should try} 28. Kg1 $11) 28... Nf6 $1 $15 {[%cal Rf6g4]} 29.
Qf3 Ne8 30. Qg4 $1 Kh7 31. Qg3 Nd6 32. Nf3 Nc4 33. Rf2 Kg8 34. Nd2 Nd6 35. Qd3
Qg5 (35... Qh4 $17 36. Re2 Qg5) 36. Nc4 $36 {[%mdl 2048] Black is under
pressure.} Qh4 37. Rf1 Ra2 38. Nxd6 cxd6 {[%mdl 4096] Endgame KQR-KQR} 39. Qf3
Qe7 40. Qf6 Qxf6 41. Rxf6 {KR-KR} Rc2 42. Rxd6 Rxc3 43. Rb6 Rc4 44. Rxb7 (44.
d6 {feels hotter.} Rxe4 45. d7 Rd4 46. Rxb7 Kf8 47. b5) 44... Rxe4 45. d6 Rd4
46. d7 {[#] Black must now prevent Rb8+.} Kf8 47. b5 {Hoping for b6.} Ke7 48.
d8=Q+ (48. d8=B+ {keeps more tension.} Kxd8 49. Rxf7 Rd6 50. Ra7 Rb6 51. Ra5)
48... Kxd8 49. Rxf7 Rb4 (49... Rd6 $1 $11 {remains equal.}) 50. Rf6 $16 Rxb5
51. Rxg6 h5 52. Rg5 Ke7 53. Rxh5 Kf6 54. g4 Rb2+ 55. Kg3 Ke6 $2 {[%mdl 8192] 
[#]} (55... Rb3+ $16 {was worth a try.} 56. Kf2 Rb2+ 57. Kg3 Rb3+ 58. Kg2 Rb2+
59. Kf3 Rb3+ 60. Ke2 Rb2+ 61. Kd3 Rb3+ 62. Ke4 Rb4+ 63. Ke3 Rb3+ 64. Kf2 Rb2+
65. Kf3 Rb3+ 66. Ke4 Kg6) 56. Rh8 (56. Rh6+ $142 Kd5 57. Rh8) 56... Rb1 (56...
Rb3+ {was necessary.} 57. Kh4 Kf7) 57. Kh4 Kf7 58. Kg5 {Weighted Error Value:
White=0.09/Black=0.18} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.52"]
[White "Bjerre, Jonas Buhl"]
[Black "Jumabayev, Rinat"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2569"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,85,23,14,17,26,24,28,39,41,112,113,109,104,95,93,75,58,69,67,68,71,
69,75,64,47,47,36,101,103,109,108,116,107,108,107,105,107,178,108,83,54,70,65,
60,60,87,84,82,80,84,84,91,93,106,74,74,61,76,54,41,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 e6 5. Nb3 Nd7 6. Nf3 Qc7 {B12:
Caro-Kann: Advance Variation.} 7. Be2 c5 8. c3 $1 {[%mdl 4] [#] outshines the
older 8.dxc5.} Bg6 $146 {White has an edge.} ({Predecessor:} 8... c4 9. Nbd2 h6
10. Nf1 Ne7 11. Ne3 Bh7 12. O-O Nf5 13. Ne1 f6 14. Bh5+ g6 15. Nxf5 exf5 {
1/2-1/2 (48) Fedoseev,V (2708)-Dreev,A (2637) Struga 2021}) 9. O-O Ne7 (9...
Be7 $14) 10. Nxc5 $16 Nxc5 11. dxc5 Qxc5 12. Qa4+ Nc6 13. Bb5 {Hoping for Be3.}
Qb6 14. Nd4 {[%cal Rd4c6]} a6 {[#]} 15. Be3 $1 {And now Nxe6! would win.} Bc5
16. Bxc6+ bxc6 17. Nxc6 Bxe3 18. Nd4+ Ke7 (18... Kf8 $14 19. fxe3 Kg8) 19. Qa3+
Kd7 20. fxe3 Rhc8 21. Rf2 Qc5 {next ...Qxa3 is good for Black.} 22. Qa4+ Ke7
23. Raf1 Ra7 (23... Qc4 $16 {was necessary.} 24. Qa3+ Qc5) 24. Qd1 ({White
should play} 24. g4 $18) 24... Qc7 25. Nf3 Ke8 26. Qa4+ Kf8 $1 27. Ng5 {
Strongly threatening Nxe6+.} Qxe5 {[#]} 28. Qd4 $1 Qxd4 29. Nxe6+ $1 {[%mdl 64]
Double Attack} ({But not} 29. exd4 $6 Kg8 $11) 29... Ke7 30. Nxd4 (30. cxd4 $2
{too greedy.} Kxe6 31. g4 Bd3 $19) 30... f6 31. Rd2 Rb7 32. Nb3 Be4 33. Kf2
Rcb8 34. Rc1 a5 35. Ke1 Kf7 {The position is equal.} 36. Rd4 Bxg2 37. Ra4 Rb5
38. Rc2 Be4 39. Rd2 Ra8 40. Nd4 Rc5 41. Nb3 Rb5 42. Nd4 Rc5 43. Nb3 {Weighted
Error Value: White=0.06/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.53"]
[White "Meshkovs, Nikita"]
[Black "Morovic Fernandez, Ivan"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2550"]
[BlackElo "2510"]
[Annotator "ChessBase"]
[PlyCount "75"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. Nf3 {[%emt 0:00:04]} d5 {[%emt 0:00:38]} 2. g3 {[%emt 0:00:10]} c6 {[%emt 0:
00:12]} 3. Bg2 {[%emt 0:00:05]} Nf6 {[%emt 0:00:04]} 4. O-O {[%emt 0:00:08]}
Bg4 {[%emt 0:00:20]} 5. d3 {[%emt 0:00:08]} Nbd7 {[%emt 0:00:05]} 6. h3 {
[%emt 0:00:59]} Bh5 {[%emt 0:01:15]} 7. Nbd2 {[%emt 0:00:06]} e6 {[%emt 0:02:
22]} 8. e4 {[%emt 0:00:40]} Be7 {[%emt 0:00:43]} 9. Qe1 {[%emt 0:04:29]} O-O {
[%emt 0:00:53]} 10. e5 {[%emt 0:01:33]} Ne8 {[%emt 0:00:27]} 11. Nh2 {[%emt 0:
00:06]} Nc7 {[%emt 0:03:21]} 12. g4 {[%emt 0:03:32]} Bg6 {[%emt 0:00:17]} 13.
f4 {[%emt 0:00:07]} f6 {[%emt 0:04:28]} 14. Ndf3 {[%emt 0:00:09]} fxe5 {
[%emt 0:17:30]} 15. fxe5 {[%emt 0:00:12]} Nb5 {[%emt 0:04:37]} 16. Be3 {
[%emt 0:07:08]} Bc5 {[%emt 0:05:47]} 17. Bxc5 {[%emt 0:02:45]} Nxc5 {[%emt 0:
00:05]} 18. a4 {[%emt 0:00:06]} Nc7 {[%emt 0:01:23]} 19. Qe3 {[%emt 0:06:02]}
Nd7 {[%emt 0:02:32]} 20. h4 {[%emt 0:09:19]} h6 {[%emt 0:06:05]} 21. h5 {
[%emt 0:01:56]} Bh7 {[%emt 0:01:52]} 22. g5 {[%emt 0:02:38]} hxg5 {[%emt 0:00:
43]} 23. Nxg5 {[%emt 0:00:02]} Bf5 {[%emt 0:01:00]} 24. Qg3 {[%emt 0:03:04]}
Nxe5 {[%emt 0:24:44]} 25. h6 {[%emt 0:37:36]} Qf6 {[%emt 0:02:40]} 26. Ne4 {
[%emt 0:06:57]} dxe4 {[%emt 0:02:11]} 27. dxe4 {[%emt 0:00:02]} g6 {[%emt 0:01:
47]} 28. Rae1 {[%emt 0:04:12]} Rae8 {[%emt 0:03:59]} 29. exf5 {[%emt 0:01:03]}
exf5 {[%emt 0:00:02]} 30. Qb3+ {[%emt 0:00:04]} Ne6 {[%emt 0:02:31]} 31. Qxb7 {
[%emt 0:00:25]} Rf7 {[%emt 0:03:51]} 32. Qb4 {[%emt 0:00:27]} Ng5 {[%emt 0:03:
12]} 33. Ng4 {[%emt 0:07:32]} Ngf3+ {[%emt 0:11:58]} 34. Bxf3 {[%emt 0:02:01]}
fxg4 {[%emt 0:01:10]} 35. Bd5 {[%emt 0:00:02]} Nf3+ {[%emt 0:00:48]} 36. Rxf3 {
[%emt 0:00:27]} Rxe1+ {[%emt 0:00:02]} 37. Qxe1 {[%emt 0:00:06]} Qd4+ {[%emt 0:
00:05]} 38. Rf2 {[%emt 0:02:12]} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.04"]
[Round "8.54"]
[White "Budisavljevic, Luka"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2508"]
[BlackElo "2484"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,89,19,25,23,23,30,28,27,18,26,29,26,6,21,24,50,45,45,42,50,50,52,48,
106,58,54,56,46,30,59,47,70,45,65,63,64,6,8,8,37,41,35,37,34,28,49,36,106,105,
100,0,0,-25,6,14,11,0,0,0,10,10,10,8,8,0,4,0,14,22,15,0,0,0,14,8]} 1. d4 Nf6 2.
c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 O-O 8. Qc2 h6 9. Bf4
Nh5 {D36: Queen's Gambit Declined: Exchange Variation: Main line (5 Bg5 c6 6
Qc2).} 10. Be5 Nd7 11. h3 Nhf6 {White has an edge.} 12. Bh2 {[#]} c5 $146 ({
Predecessor:} 12... Re8 13. Nf3 Nf8 14. O-O-O Be6 15. Kb1 Rc8 16. g4 c5 17.
dxc5 Bxc5 18. Qa4 a6 {1/2-1/2 (46) Pajeken,W (2322)-Timme,K (1942) Greifswald
2003}) 13. dxc5 Nxc5 14. Nf3 Nxd3+ 15. Qxd3 Qb6 16. Be5 Be6 17. O-O Rfd8 18.
Bd4 Qb4 19. Rfc1 a5 (19... a6 $14) 20. a3 Qc4 ({Don't blunder} 20... Qxb2 $2
21. Rcb1 $18) 21. Qd1 Qa6 22. a4 Rac8 23. Nb5 Ne8 24. Be5 Bb4 25. Nfd4 Bd7 26.
Nc7 (26. Rxc8 $14 Rxc8 27. Qf3) 26... Qg6 $11 27. Qf3 Qe4 28. Qg3 {[#]
Strongly threatening Nxe8.} Bf8 29. Rc3 f6 30. Bf4 Bb4 31. Rcc1 Nxc7 (31... g5
$14) 32. Bxc7 $16 Re8 33. b3 ({Better is} 33. Bd6 $16) 33... Kh7 34. Rc2 Qg6
35. Qxg6+ {The position is equal.} Kxg6 36. Rd1 Kf7 37. Kf1 Ke7 38. Ke2 h5 39.
Rdc1 Ba3 40. Rd1 Bb4 41. Rdc1 Ba3 42. Rg1 Bb4 43. g4 Kf7 44. Kd3 Rh8 45. f3 {
Weighted Error Value: White=0.11/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.1"]
[White "Caruana, Fabiano"]
[Black "Firouzja, Alireza"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2800"]
[BlackElo "2770"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,107,5,13,12,24,0,17,0,6,-14,18,10,19,16,21,8,55,11,8,25,23,12,26,18,8,
16,26,26,34,52,77,74,68,66,102,103,102,22,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,41,
0,0,0,9,10,4,8,54,74,68,71,108,69,323,323,311,301,308,289,287,224,338,325,404,
522,497,507,740,730,730,711,1312,1293,1562,1338,2552,2378,2181,1673,6079,4610,
29970,29970,5202,5197]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Bd3 Bxd3 6.
Qxd3 {B12: Caro-Kann: Advance Variation.} Qa5+ {is currently scoring better
than 6...e6.} 7. Nd2 e6 $1 8. Ne2 {The position is equal.} Ne7 {[#]} 9. b4 $146
({Predecessor:} 9. O-O Qa6 10. c4 Nf5 11. b3 c5 12. dxc5 Nc6 13. a3 Bxc5 14. b4
Nxe5 15. Qb1 Nxc4 16. bxc5 Nxd2 17. Bxd2 Qxe2 18. Qxb7 {0-1 (40) Lagarde,M 
(2648)-Bluebaum,M (2669) Chalons en Champagne 2021}) 9... Qa6 10. Qb3 Nf5 {
Strongly threatening ...Qxe2+!} 11. Nf3 Nd7 12. a4 Qc4 (12... Qb6 {feels
hotter.} 13. Bd2 Be7 14. a5 Qb5 15. Nf4 Rc8) 13. Bd2 Qxb3 14. cxb3 f6 15. O-O
Be7 16. g3 Kf7 17. Rfe1 fxe5 18. dxe5 Rac8 19. Nf4 d4 20. Rac1 c5 {[#]} 21. Nd5
$1 cxb4 (21... Kg6 22. Nxe7+) 22. Nxe7 Nxe7 23. Ng5+ ({But not} 23. Nxd4 a5 $11
) (23. Bxb4 $16 Rxc1 24. Rxc1) 23... Kg6 $11 24. Rxc8 Rxc8 25. Nxe6 Nc6 26. f4
Kf5 27. Nxg7+ {[%mdl 64] Double Attack} Kg6 $1 {...Nc5 is the strong threat.}
28. Ne6 Kf5 29. Ng5 Nc5 30. Nf7 $36 {[%mdl 2048] Black must now prevent Nd6+.
White is pushing.} Ke6 {[%cal Re6f7]} 31. Nd6 Rg8 32. Kg2 Kd5 33. Rb1 Ne4 34.
Nxe4 Kxe4 {[%mdl 4096] Endgame KRB-KRN} 35. Rc1 Kd3 36. Be1 Ke2 37. e6 $1 {
And now f5 would win.} d3 38. f5 {Threatens to win with f6.} Nd4 $2 {[%mdl
8192] This move loses the game for Black.} ({Black should try} 38... Re8 $1 $14
) 39. Bxb4 $18 {[%csl Gb4][%cal Rc1e1]} d2 {[#]} 40. Bxd2 {[%mdl 512]} Kxd2 {
KRN-KR} 41. Rc5 {Hoping for Rd5.} Re8 42. Re5 Kd3 {[#]} (42... Nc6 $142 43. Re4
Kd3) 43. Kf2 $1 Re7 44. g4 hxg4 45. Kg3 Re8 {intending ...Nf3.} 46. Kxg4 Nc6
47. Kf4 Ne7 48. f6 Ng6+ 49. Kf5 Nxh4+ 50. Kg5 Nf3+ 51. Kf4 Nd4 52. e7 Nc6 53.
f7 Rxe7 54. Rd5+ {Weighted Error Value: White=0.07/Black=0.43} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.2"]
[White "Anton Guijarro, David"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2658"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,67,25,20,13,11,0,0,14,0,0,-3,5,5,7,27,7,14,0,3,13,13,11,1,-4,0,0,0,0,
0,0,0,0,0,0,13,0,67,0,0,0,0,0,0,0,0,0,0,0,0,0,3,0,12,0,0,0,12,0,0,0]} 1. d4 Nf6
2. c4 g6 3. Nf3 Bg7 4. e3 O-O 5. Be2 c5 6. dxc5 {E60: King's Indian: Unusual
lines and Fianchetto Variation without Nc3.} Na6 7. O-O Nxc5 8. b4 Nfe4 9. Nd4
Ne6 10. Bb2 Qb6 11. a3 {[#]} d5 $146 ({Predecessor:} 11... a5 12. Qc2 Nxd4 13.
exd4 Bxd4 14. Ra2 Bxb2 15. Rxb2 Nf6 16. c5 Qc7 17. Bf3 axb4 18. axb4 {0-1 (59)
Takac,Z (2122)-Jankovic,A (2329) Zagreb 2002}) 12. Bf3 Nxd4 13. Bxd4 Bxd4 14.
Qxd4 Qxd4 15. exd4 Rd8 16. a4 Bf5 17. Re1 e5 18. cxd5 Ng5 19. Rxe5 Nxf3+ 20.
gxf3 Rac8 {[#] And now ...Rc1+ would win.} 21. Nd2 Rc2 22. Ne4 Rc4 ({Black
should try} 22... Kf8 $11) 23. b5 ({Better is} 23. Re7 $1 $14) 23... Kf8 $11 {
The position is equal.} 24. Rd1 b6 25. h4 h5 26. Kg2 Rxa4 27. Kg3 Rb4 28. Kf4
Rxb5 29. Nf6 Kg7 30. Kg5 Rb3 31. Re3 Rb5 32. Re5 Rb3 33. Re3 Rb5 34. Re5 {
An uneventful encounter.  Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.3"]
[White "Shirov, Alexei"]
[Black "Vitiugov, Nikita"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2659"]
[BlackElo "2727"]
[Annotator "TA"]
[PlyCount "31"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,31,15,19,0,0,0,0,0,0,0,14,0,0,0,16,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5
a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6 8. a4 Bd7 $1 {The position is
equal. The main line 8...Bd7 scores better than 8...b4.} 9. Be3 {C84: Closed
Ruy Lopez: Unusual White 6th moves.} O-O 10. axb5 axb5 11. Nc3 Rxa1 12. Qxa1
Nb4 {[#]} 13. Na2 $5 $146 {[%mdl 8] An interesting novelty.} ({Predecessor:} 
13. Bd2 c5 14. Qa3 c4 15. dxc4 bxc4 16. Qxb4 cxb3 17. Qxb3 Qc7 18. Bg5 Be6 19.
Qa4 Rb8 20. Bxf6 Bxf6 21. h3 g6 22. Rb1 Qb7 {1/2-1/2 (32) Calonge Gonzalez,A 
(2290)-Rubio Doblas,R (2222) ICCF email 2012}) 13... Nc6 14. Nc3 Nb4 15. Na2
Nc6 16. Nc3 {Not much happened in this game.  Weighted Error Value: White=0.07/
Black=0.00} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.4"]
[White "Howell, David W L"]
[Black "Korobov, Anton"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "2658"]
[BlackElo "2690"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,65,27,22,27,2,15,5,10,12,14,24,17,18,31,17,57,56,58,58,57,57,75,63,
99,64,107,100,110,80,77,90,83,64,66,49,117,109,191,176,301,284,294,287,268,277,
521,514,700,242,875,864,806,769]} 1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. d4
Be7 6. O-O O-O 7. Re1 Na6 8. Nc3 Ne4 {E18: Queen's Indian: Old Main Line (4 g3
Bb7 5 Bg2 Be7 6 0-0 0-0 7 Nc3).} 9. Bd2 f5 {is the legacy move (9...Bf6).} 10.
Ne5 d6 {The position is equal.} 11. Nd3 {[#]} Bf6 $146 ({Predecessor:} 11...
Bg5 12. Bxg5 Qxg5 13. Nf4 Qf6 14. h4 Nxc3 15. bxc3 Bxg2 16. Kxg2 e5 17. Nd5 Qf7
{0-1 (30) De Jong,M (2342)-Grochal,J (2196) Vlissingen 2016}) 12. Nxe4 fxe4 {
[#]} 13. e3 $1 e5 {[#]} (13... Qe8 14. Nf4) 14. Qg4 $1 Qc8 (14... exd4 15. exd4
) 15. Qxc8 Raxc8 16. dxe5 dxe5 {[#] Strongly threatening ...Rcd8.} 17. Bc3 $1
Rfe8 {[#]} (17... Rfd8 18. Red1) 18. b4 $1 {[%cal Bb2b4,Bb4b5][%mdl 32]} Rcd8 (
18... c5 19. b5) 19. Rad1 Ba8 20. Nc1 c5 21. b5 Nc7 22. h4 Ne6 23. Rxd8 Rxd8
24. Nb3 Rd3 (24... Kf7 $14) 25. Rc1 $16 g5 (25... Kf7 $16) 26. Nd2 $18 Nd4 (
26... Rd8 $142 27. Nxe4 Bxe4) 27. Bf1 ({Less strong is} 27. exd4 exd4 28. Bxe4
(28. Nxe4 Bxe4 29. Bxe4 Rxc3 $11) 28... Rxc3 $16) (27. Nxe4 Ne2+ 28. Kf1 Nxc1
$17) 27... Rxd2 28. Bxd2 ({Not} 28. exd4 Rxd4 29. Bxd4 exd4 $11) 28... Nf3+ 29.
Kg2 Nxd2 $2 (29... gxh4 30. Rd1 Kf7) 30. Rd1 Nxf1 31. Rd7 (31. Kxf1 a6 32. bxa6
) 31... Nd2 $2 ({Don't blunder} 31... gxh4 $2 32. Kxf1 Kf8 33. Rxa7 $18) (31...
Bb7) 32. Rxd2 Bb7 33. Rd6 {Weighted Error Value: White=0.19/Black=0.49} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.5"]
[White "Oparin, Grigoriy"]
[Black "Predke, Alexandr"]
[Result "1/2-1/2"]
[ECO "C87"]
[WhiteElo "2654"]
[BlackElo "2666"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,61,39,32,51,11,20,14,35,9,33,45,30,26,35,32,37,18,33,10,9,11,15,0,9,
-59,-24,-22,-29,-27,-27,-25,-26,-27,-20,-26,-20,-20,-22,-37,-15,-18,-18,-22]} 
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 Be7 7. O-O O-O 8. Re1
Re8 9. Nbd2 Bf8 10. h3 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 11. Bc2 h6 {C87:
Closed Ruy Lopez: Steinitz-type lines after 6 Re1 d6.} 12. a4 b4 13. a5 d5 {[#]
} 14. exd5 $146 ({Predecessor:} 14. Ba4 Bb7 15. Qc2 Re6 16. Nb3 bxc3 17. bxc3
dxe4 18. dxe4 Nb8 19. Nbd2 Nfd7 20. Bb3 {1/2-1/2 (32) Saric,I (2650)
-Kryvoruchko,Y (2683) Budva 2019}) 14... Nxd5 15. Ba4 Bd7 16. Ne4 bxc3 17. bxc3
Nf6 18. Ng3 Bd6 19. Nh4 e4 ({Don't blunder} 19... Nxa5 $2 20. Bxd7 Nxd7 21.
Nhf5 $18) 20. dxe4 Bxg3 21. fxg3 Nxe4 22. Qf3 {[#]} (22. Bb3 $11 Nxg3 23. Bxf7+
Kxf7 24. Qd5+ Be6 25. Qf3+ {[%mdl 64] Double Attack} Qf6 26. Qxg3) 22... Ne5 $1
23. Qxe4 {[#] Strongly threatening Rd1.} Nc6 $1 24. Bxc6 Bxc6 {[%mdl 64] Pin}
25. Bg5 $1 Bxe4 26. Bxd8 Raxd8 27. Ra4 Bd5 28. Rxe8+ Rxe8 29. Kf2 Re5 30. Nf3
Bxf3 31. gxf3 {Weighted Error Value: White=0.12/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.6"]
[White "Harikrishna, Pentala"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2719"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,99,11,11,12,6,27,7,40,43,45,37,41,45,45,41,46,46,46,46,46,46,52,46,
45,29,34,37,35,35,35,0,32,27,41,31,25,0,0,0,8,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4.
Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. Qb3 c5 8. cxd5 exd5 9. e3 O-O 10. dxc5 Bxc3+
11. Qxc3 Qxc3+ 12. bxc3 Nd7 {D38: Queen's Gambit Declined: Ragozin Defence (4
Nf3 Bb4).} 13. Rd1 Nf6 $1 {[%mdl 4] is recently more successful than 13...Nxc5.
} 14. c4 {[#]} dxc4 $146 ({Predecessor:} 14... Be6 15. Nd4 {1/2-1/2 (15) Dubov,
D (2683)-So,W (2765) Wijk aan Zee 2020}) 15. Bxc4 Bg4 16. Rc1 Bxf3 17. gxf3
Rac8 18. Ke2 Nd7 19. c6 Rxc6 20. Bb5 Rxc1 21. Rxc1 $14 {[%mdl 4096] Endgame
KRB-KRN} Nb6 22. Rc7 Rb8 23. Bd3 Nd5 24. Rc5 Nb4 25. Bc4 {aiming for Rc7.} Nc6
26. Rf5 Rf8 27. f4 g6 28. Rb5 b6 29. Rb1 Rc8 {The position is equal.} 30. Rd1
Kf8 31. Rd7 Ne5 {[%cal Re5d7]} 32. fxe5 Rxc4 33. Rxa7 $11 {KR-KR} Rc5 34. f4
Rc2+ 35. Kf3 Rxh2 36. Ra6 Ke7 37. a3 b5 38. Ra7+ Ke6 39. Ra6+ Ke7 40. Ra5 Rb2
41. e4 Rb3+ 42. Kf2 b4 43. Ra7+ Ke6 44. Ra6+ Ke7 45. axb4 Rxb4 46. Ke3 Rb3+ 47.
Kd4 Rf3 48. f5 gxf5 49. exf5 Rxf5 50. Rxh6 {Weighted Error Value: White=0.03/
Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.7"]
[White "Alekseenko, Kirill"]
[Black "Sjugirov, Sanan"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2710"]
[BlackElo "2663"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,45,36,25,30,-3,20,0,20,37,22,10,18,6,49,6,19,3,10,0,0,0,0,0,0,0,0,
-24,-20,-24,-22,-20,0,0,0,-24,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7
5. d4 cxd4 6. Nxd4 Ng6 $1 {[%mdl 4] is now more promising than 6...Qb6. B30:
Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} 7. Nxc6 {[#]} dxc6 $146 ({
Predecessor:} 7... bxc6 8. Be2 Bc5 9. c4 O-O 10. Nc3 e5 11. Be3 Bxe3 12. fxe3
d6 13. Qd2 Be6 14. Rad1 {1/2-1/2 (57) Matinian,N (2436)-Sjugirov,S (2663)
Chess.com INT 2021}) 8. Bc4 Qxd1 9. Rxd1 Bc5 10. a4 a5 11. Nd2 Ke7 12. Nf1 (12.
Nb3 $5 {[%cal Rb3c5]} Bb6 13. Nd4 $14) 12... Bd7 13. g3 Rhd8 14. Kg2 f6 15. Bd2
Ne5 16. Be2 g5 17. Bc3 Nf7 18. Nd2 e5 19. Nb3 Bb6 20. Nd2 Bc5 21. Nb3 Bb6 22.
Nd2 Bc5 23. Nb3 {Not much happened in this game.  Weighted Error Value:
White=0.09/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.8"]
[White "Yu, Yangyi"]
[Black "Najer, Evgeniy"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2704"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,65,12,16,19,10,2,37,23,38,33,46,47,53,54,41,35,33,35,63,62,54,47,50,6,
31,26,56,40,81,69,150,58,236,249,263,134,172,98,110,94,516,539,622,366,366,366,
554,539,959,943,925,812,804,792,776,778,2439,2283]} 1. c4 e5 2. g3 d6 3. Nc3 f5
4. Bg2 Nf6 5. Nf3 Be7 6. O-O {A21: English Opening: 1...e5 2 Nc3.} O-O 7. b4 {
[%cal Bb2b4,Bb4b5][%mdl 32]} Kh8 8. d3 {White is slightly better.} Qe8 9. a4 $5
{[%mdl 4] [#] A promising side line.} a5 $146 ({Predecessor:} 9... Qh5 10. e3
a5 11. b5 Nbd7 12. Ba3 Rb8 13. Rc1 Bd8 14. Nh4 Qxd1 15. Rfxd1 g6 16. Nf3 {
1-0 (27) Geerken,L (2024)-Hermannsdoerfer,F (1833) GER email 2016}) 10. b5 Nbd7
11. e3 Rb8 12. Ba3 b6 13. Nd2 Bb7 14. Bxb7 Rxb7 15. Qf3 Rb8 16. Rae1 Qg6 (16...
d5 $5 {[%cal Re7a3]} 17. Bxe7 Qxe7 $11) 17. Qc6 e4 18. d4 (18. Qxc7 Rfc8 $15)
18... Rbd8 19. f3 {[%cal Rf3e4]} (19. Qxc7 $6 Rc8 $11) 19... exf3 (19... Qh5
$14) 20. Nxf3 (20. Qxf3 $16 Qg5 21. Qxf5) 20... Nb8 $2 (20... Qh5 $14) 21. Qxc7
$18 Nbd7 {[#] intending ...Rc8.} 22. Nh4 ({Not} 22. Bxd6 Rc8 $11) (22. Ne5 $1
$18 {[%mdl 512]} dxe5 23. Bxe7) 22... Qh5 $16 {[#]} 23. Rxf5 (23. Qb7 $1 $18)
23... g5 {[#] And now ...Qg4 would win.} 24. Ref1 $1 Qh6 $2 {[%mdl 8192]} (
24... Qg4 $16 {is a better chance.} 25. Ng2 (25. Bxd6 Rc8 $17) 25... Rc8) 25.
Nf3 $18 Rc8 26. Qb7 Rxc4 27. Bb2 g4 (27... Rcc8 $142 28. Nxg5 Ng4 29. Nf7+ {
[%mdl 64] Overworked Piece} Rxf7 30. Qxc8+ Nf8) 28. Ng5 {White is clearly
winning.} Kg8 29. Nd5 {[%mdl 64] Double Attack} Bd8 30. Ne6 Rc2 31. R1f2 Rxf2
32. Rxf2 Ne4 33. Rxf8+ {Weighted Error Value: White=0.33/Black=0.54} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.9"]
[White "Petrosyan, Manuel"]
[Black "Maghsoodloo, Parham"]
[Result "1/2-1/2"]
[ECO "A17"]
[WhiteElo "2605"]
[BlackElo "2701"]
[Annotator "TA"]
[PlyCount "144"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,144,7,3,12,6,0,21,0,0,0,0,0,0,0,47,20,12,-7,0,-6,0,-8,0,0,0,0,29,0,53,
53,53,53,53,53,53,51,49,59,62,27,28,22,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,13,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,0,0,0,-1,-1,-1,0,0,0,0,1]
} 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. e3 Nbd7 5. b3 b6 6. Bb2 {A17: English
Opening: 1...Nf6 with ...Bb4.} Bb7 7. Rc1 a6 8. cxd5 exd5 9. d4 Bd6 10. g3 Qe7
11. Bg2 h5 {[#]} 12. Qc2 $146 ({Predecessor:} 12. Nd2 h4 13. Nc4 O-O-O 14.
Nxd6+ Qxd6 15. Kd2 Kb8 16. Kc2 Rh6 17. Kb1 Rdh8 18. Qc2 {0-1 (38) Dobre,C 
(2316)-Gheorghiu,C (2315) Mamaia 2019}) 12... O-O-O 13. a3 Kb8 14. b4 Ne4 15.
h4 Rh6 16. Nxe4 dxe4 17. Ng5 {[%cal Rg2e4]} Re8 18. Qb3 (18. d5 $5) 18... f6 (
18... Rf8 $11) 19. Nf7 $14 Rh7 20. Nxd6 Qxd6 21. a4 Bd5 22. Qa3 Kb7 23. Bf1 Nb8
24. b5 Qxa3 25. Bxa3 axb5 {The position is equal.} 26. axb5 Nd7 27. Kd2 Ra8 28.
Ra1 f5 29. Be2 g6 30. Bb4 (30. Rhc1 {with more complications.} Nf6 31. Ke1 Ra5
32. Kf1 Ng4 33. Kg1) 30... Rxa1 31. Rxa1 Nf6 32. Ra3 Ng4 33. Ke1 Nh2 34. Kd2
Rf7 35. Ra1 (35. Bc3 {is interesting.} Rh7 36. Kc2 Rh8 37. Be1 Ng4 38. Kc3)
35... Ng4 36. Ke1 Nf6 37. Kd2 (37. Kf1 {looks sharper.} Ne8 38. Ra3 Rd7 39. Ke1
Nf6 40. Rc3) 37... Rh7 38. Ra3 Ng4 39. Ke1 Nh2 40. Kd2 Nf3+ 41. Kc3 Rh8 42.
Bxf3 exf3 $11 {[%mdl 4096] Endgame KRB-KRB} 43. Be7 Rh7 44. Bg5 c6 45. bxc6+
Bxc6 46. Bf4 Rd7 47. Kb2 Bd5 48. Kc3 Be6 49. Kb4 Bf7 50. Rc3 Bd5 51. Ra3 Rd8
52. Bg5 Rd6 53. Bf4 Rd7 54. Kc3 Rd8 55. Kb4 Bc6 56. Kc3 Bb5 57. Kb4 Rd5 58. Kc3
Bd7 59. Bg5 Be6 60. Kb4 Bf7 61. Bf6 Be8 62. Kc3 Rd6 63. Be5 Rd8 64. Bf4 Rd5 65.
Bg5 Bf7 66. Kb4 Be6 67. Bf6 Bd7 68. Kc3 Rd6 69. Be5 Rc6+ 70. Kb2 Be6 71. Rc3
Bc4 72. Ka3 Bd5 {Weighted Error Value: White=0.03/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.10"]
[White "Sasikiran, Krishnan"]
[Black "Eljanov, Pavel"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2640"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,65,31,0,6,-7,32,14,18,-16,25,20,41,0,17,18,13,0,16,16,23,23,27,34,52,
45,52,52,50,57,53,40,77,77,75,75,116,124,128,133,136,126,122,125,181,177,111,
34,581,561,539,532]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6.
Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 Be7 {9...Bd7 is the modern
continuation. C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 10. Nc3 Nh4 {
With the idea ...Nxf3+.} 11. Nxh4 (11. Rd1+ {feels hotter.} Ke8 12. Nd4 Nf5 13.
Nde2 Be6 14. Nf4) 11... Bxh4 {The position is equal.} 12. Be3 h5 13. Rad1+ Ke8
$1 {[#]} 14. f3 $5 $146 {[%mdl 8] An interesting novelty.} (14. Ne2 {with more
complications.} Bf5 15. Nd4 Bh7 16. f4 Rd8 17. c3) ({Predecessor:} 14. Ne2 Bf5
15. Nd4 Bh7 16. f4 Rd8 17. f5 Rd5 18. Bf4 Be7 19. g4 Bc5 20. c3 {1/2-1/2 (33)
Karjakin,S (2752)-Ding,L (2791) chess24.com INT 2020}) 14... Be7 15. g4 a5 16.
b3 Be6 17. Kg2 b5 18. Ne2 a4 19. Nf4 axb3 20. axb3 Ra2 21. Rf2 hxg4 22. hxg4
Bc8 23. Rfd2 g6 24. Nd3 $1 {[%cal Rd3b4] aiming for Nb4!} Ra8 25. Nc5 b4 26.
Ne4 {Strongly threatening Nf6+.} Be6 27. Nf6+ Kf8 28. Bg5 Kg7 {[#]} 29. Kg3 $1
Ra5 {[#]} (29... c5 $16 30. Ne4 Bxg5 31. Nxg5 Ra6) 30. f4 $1 $18 Raa8 31. Rd7
Bd8 $2 {[%mdl 8192] [#]} (31... Bxd7 $14 32. Rxd7 {[%mdl 64] Double Attack} Kf8
) 32. Ne8+ $1 {[%mdl 512]} Rxe8 33. Bxd8 {Weighted Error Value: White=0.09/
Black=0.36} ({Less strong is} 33. Rxd8 Rexd8 34. Bxd8 (34. Rxd8 Rxd8 35. Bxd8
Bd5 $14) 34... Bd5 $16) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.11"]
[White "Kryvoruchko, Yuriy"]
[Black "Shevchenko, Kirill"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2686"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,61,6,8,15,8,8,9,8,14,7,55,6,4,7,6,6,6,0,6,9,15,5,6,0,0,0,17,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,-27,-1,-2,-2,-2,-4,-5]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4.
O-O Bg7 5. c3 Nf6 6. Re1 O-O 7. d4 d5 {is cutting edge theory.} 8. e5 Ne4 9.
Be3 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} cxd4 10. cxd4 Qb6 11. Bxc6 Qxc6 12. Nfd2
Be6 13. f3 (13. Nb3 {is interesting.} f6 14. f3 Ng5 15. Na3 b6 16. Qc1) 13...
Nxd2 14. Qxd2 Rfc8 15. Nc3 {[%cal Bb1c3,Bc3e2,Be2f4][%mdl 32] [#]} Qa6 $146 ({
Predecessor:} 15... Rc7 16. a4 Qd7 17. Bh6 Bh8 18. h4 Rac8 19. h5 Rc4 20. Kf2
f6 21. Bf4 g5 {1/2-1/2 (29) Bartel,M (2597)-Szpar,M (2403) Legnica 2021}) 16.
Ne2 Rc7 17. Nf4 Rac8 18. Rec1 f6 19. Rxc7 Rxc7 20. Re1 {Black must now prevent
exf6.} Rc8 21. Qb4 Bf7 22. e6 Bxe6 23. Nxe6 Qxe6 24. Bd2 ({Don't go for} 24.
Qxb7 $2 {[#]} Rc1 $3 $19 {[%mdl 512]}) 24... Qc6 25. Rc1 ({But not} 25. Rxe7
Bf8 $17) 25... Qe6 26. Rxc8+ ({Avoid the trap} 26. Qxb7 $2 Rxc1+ 27. Kf2 Rc2
$19) 26... Qxc8 27. Qxe7 Qc6 28. Bb4 h5 29. Kf2 {The position is equal.} Qc2+ {
[%mdl 64] [#] Double Attack} 30. Qe2 $1 {[%cal Re2c2]} Qxe2+ 31. Kxe2 {An
uneventful encounter.  Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.12"]
[White "Sargissian, Gabriel"]
[Black "Sarana, Alexey"]
[Result "1-0"]
[ECO "D24"]
[WhiteElo "2664"]
[BlackElo "2649"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,51,8,17,0,0,0,0,0,0,-8,89,-9,-2,0,-3,-2,0,0,0,-3,9,9,6,0,0,-8,40,38,
31,34,237,242,247,247,247,220,225,203,206,212,386,381,381,379]} 1. d4 Nf6 2. c4
e6 3. Nf3 d5 4. Nc3 dxc4 5. e4 Bb4 6. Bxc4 {D24: Queen's Gambit Accepted: 3
Nf3 Nf6 4 Nc3.} Nxe4 7. O-O Nxc3 8. bxc3 {The position is equal.} Bd6 9. Re1
Nd7 (9... O-O $11) 10. Ne5 ({White should play} 10. Bxe6 $1 $16 O-O 11. Bb3)
10... O-O $11 {[#]} 11. Qh5 $5 $146 {[%mdl 8] New and interesting.} ({
Predecessor:} 11. Qg4 Nf6 12. Qg3 Nh5 13. Qh3 g6 14. Bh6 Re8 15. g4 Ng7 16. Re3
f6 17. Nf3 {1/2-1/2 (59) Nakamura,H (2749)-Duda,J (2731) Saint Louis 2019})
11... Nf6 12. Qh3 Nd5 13. Bd3 $40 {[%csl Gd3][%cal Rh3h7][%mdl 128] Black
needs to defend precisely.} f5 14. Bc4 c5 15. Bxd5 exd5 16. Bf4 cxd4 17. cxd4
a5 18. Rac1 Ra6 19. Qb3 Be7 $2 {[#] Loses the game.} ({Better is} 19... Bb4 $14
) 20. Rxc8 $1 $18 {[%mdl 576] Deflection} Qxc8 21. Qxd5+ Qe6 {[#]} 22. Nc6 $1 {
[%mdl 512]} Qxd5 23. Nxe7+ Kf7 24. Nxd5 {Threatens to win with Re7+.} Re6 (
24... Rd8) 25. Rxe6 Kxe6 {[#]} 26. Nb6 $1 {Weighted Error Value: White=0.08/
Black=0.41} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.13"]
[White "Nihal Sarin"]
[Black "Deac, Bogdan-Daniel"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2652"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,86,0,20,0,14,-17,22,24,10,0,0,0,0,0,0,-2,0,2,0,0,0,0,9,0,8,8,21,29,22,
10,39,27,64,77,52,29,33,11,18,-22,-8,-8,-15,-15,-14,-20,-17,-14,-14,-20,-25,
-29,-32,-27,-25,-27,-20,-25,-27,-26,-24,-33,-26,-31,-35,-43,-40,-50,-37,-50,
-26,-26,-26,-39,-43,-49,-15,-18,-20]} 1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. Nf3 Nc6
5. Nbd2 Nh5 6. Be5 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2.
..Nf6 3 Bf4.} e6 7. c4 cxd4 (7... f6 {looks sharper.} 8. Bg3 cxd4 9. cxd5 Nxg3
10. hxg3 Qxd5 11. Bc4 Qd6) 8. cxd5 {[#]} Qxd5 $146 {[#]} ({Predecessor:} 8...
exd5 9. Bxd4 Nxd4 10. Nxd4 Nf6 11. Bb5+ Bd7 12. Qa4 a6 13. Bxd7+ Qxd7 14. Qxd7+
Kxd7 {1/2-1/2 (41) Sedlak,N (2542)-Nikitenko,M (2452) Novi Sad 2021}) 9. Bc4 $1
Qd8 10. Bxd4 Nxd4 11. Nxd4 Nf6 12. O-O Be7 13. Qb3 O-O 14. Rfd1 Bc5 15. Rac1 {
[%cal Rd4e6]} Qe7 16. N2f3 {[%cal Bd2f3,Bf3g5,Bg5e4,Be4d6][%mdl 32]} a6 17. h3
Bd6 18. Ng5 {[%cal Rc4e6]} Kh8 19. Qd3 Bc7 20. Bb3 Bb6 21. Ndf3 {[#] Hoping
for Ne5.} h6 22. Ne4 Rd8 23. Nd6 {Nxf7+! is the strong threat.} Bd7 $1 {
[%cal Rd7b5]} 24. Nc4 Bb5 25. Qb1 Bc7 26. Nce5 Be8 27. Qc2 Rxd1+ 28. Rxd1 Rd8
29. Rxd8 Qxd8 30. Ba4 b5 31. Bb3 Qd6 32. a4 Kg8 33. axb5 axb5 34. Ba2 Nd7 (
34... Qb6 {with more complications.} 35. Bb1 Bd6 36. Qc8 Kf8 37. g3 Qc7) 35.
Nxd7 Bxd7 36. Bb1 g6 37. Qe2 Bc6 {White must now prevent ...Bxf3.} 38. e4 Qc5 {
And now ...Qc1+ would win.} 39. Qd2 Kg7 40. b4 Qd6 {Threatening ...Qxd2.} 41.
Qxd6 Bxd6 42. Nd4 Bd7 43. Bd3 Bxb4 {Weighted Error Value: White=0.06/Black=0.07
} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.14"]
[White "Cori, Jorge"]
[Black "Esipenko, Andrey"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2655"]
[BlackElo "2720"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,88,14,9,2,1,-7,7,0,0,0,0,-5,34,-4,-6,-6,16,0,6,-36,21,-15,-22,-34,-33,
-35,0,-26,-13,-20,-18,-89,-36,-97,-83,-120,-96,-128,0,-39,0,0,0,0,0,-265,-284,
-281,-242,-206,-187,-370,-372,-379,-313,-352,-377,-629,-634,-577,-379,-383,
-395,-598,-609,-588,-620,-1414,-1373,-1516,-1527,-1819,-1630,-1777,-1764,-2709,
-2544,-2414,-2136,-29988,-29989]} 1. c4 e5 2. Nc3 Bb4 3. Nd5 Be7 4. Nf3 d6 5.
e3 Nf6 6. Nxe7 {A21: English Opening: 1...e5 2 Nc3.} Qxe7 7. d4 {[#]} c5 $146 (
{Predecessor:} 7... O-O 8. Be2 c5 9. O-O Re8 10. d5 Bg4 11. h3 Bh5 12. g4 Bg6
13. Nh2 e4 {0-1 (41) Saric,I (2667)-Martinovic,S (2539) Mali Losinj 2019}) 8.
d5 {The position is equal.} e4 9. Nd2 Bf5 10. h3 h5 11. b3 Nbd7 12. Bb2 h4 13.
a3 Ne5 14. b4 b6 (14... Nfd7 $15) 15. Qb3 Rh6 16. bxc5 bxc5 17. Rb1 Kf8 18. Bc3
(18. Bxe5 $5 Qxe5 19. Qb7 $11) 18... Nfd7 19. Qb7 Qd8 20. Qa6 (20. a4 $11 {
keeps the balance.}) 20... Kg8 (20... Qg5 $1 $17 {Hoping for ...Nd3+.} 21. Rb7
Kg8) 21. a4 (21. Rh2 $15) 21... Qf6 22. Rb3 Rg6 23. Rh2 {[#]} Rh6 (23... Kh7 $1
$17 24. Kd1 Qg5) 24. a5 Rh8 25. Be2 Kh7 26. Kd1 Bg6 27. Rh1 $2 {[%mdl 8192]
White is on the road to losing.} (27. g3 $11 {and White stays safe.}) 27...
Qxf2 $19 28. Qxd6 Qxg2 29. Rf1 {[#]} Rhe8 30. Bxe5 $2 (30. Rb7 Qxh3 31. Rxd7
Nxd7 32. Qf4) 30... Nxe5 31. Qxc5 Qxh3 32. Qd4 Qg2 33. Rf4 $2 (33. Ke1 h3 34.
Rf2 Qg1+ 35. Nf1) 33... Kg8 34. Bf1 Qh1 {White must now prevent ...h3.} 35. d6
{Black should prevent d7.} Rad8 {...h3 is the strong threat.} 36. Rb7 (36. Qd5
{is a better defense.} h3 37. Rb7) 36... Nd3 37. d7 Rf8 38. Qd6 Nxf4 39. Qxf4
h3 40. c5 h2 41. c6 Qg1 42. c7 Rxd7 43. Rb8 Bh5+ 44. Ke1 {[#]} Rxc7 $1 {
[%cal Rc7c1][%mdl 512] Weighted Error Value: White=0.88/Black=0.15} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.15"]
[White "Volokitin, Andrei"]
[Black "Dubov, Daniil"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "2652"]
[BlackElo "2714"]
[Annotator "TA"]
[PlyCount "82"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,82,21,28,22,27,28,35,20,36,26,37,0,36,0,45,36,39,32,35,35,42,19,18,
16,23,15,16,0,0,4,6,0,0,0,0,0,9,0,7,0,2,6,12,-84,-65,-270,-278,-245,-195,-455,
-456,-450,-456,-789,-591,-547,-517,-630,-630,-1879,-2521,-2868,-1532,-2694,
-2220,-1474,-1236,-1207,-1177]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. O-O
O-O 6. Re1 d6 7. a4 Be6 8. a5 {8.Bxe6 is the modern continuation.} a6 9. Nbd2 {
C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack.} Bxc4 $5 {[%mdl 4]
Leaves trodden paths.} 10. Nxc4 Re8 {[#]} 11. Bg5 $146 {White is slightly
better.} ({Predecessor:} 11. c3 h6 12. Qb3 Rb8 13. Ne3 Bf8 14. Nf5 Qd7 15. c4
Nd8 16. Be3 c6 17. Qc2 {1-0 (56) Bocharov,I (2563)-Ozgibcev,A (2368) Sochi 2018
}) 11... Nd7 12. Bd2 Nf6 13. Bg5 Nd7 14. Bd2 Nf6 15. c3 h6 16. Qb3 Rb8 17. Ne3
Bf8 18. Qa2 Ne7 19. b4 Ng6 20. Nd5 Nxd5 21. Qxd5 c6 22. Qb3 d5 23. Rad1 Qd7 24.
Be3 Rbd8 25. Bb6 Rc8 26. Be3 Kh7 27. h4 Qg4 28. exd5 f5 29. Bd2 (29. Qc4 $11)
29... Bd6 $17 {[#] ...e4! is the strong threat.} 30. dxc6 $2 {Loses the game.}
(30. Nh2 $1 $15 Qxh4 31. Re3) 30... e4 $19 31. dxe4 fxe4 $40 {[%mdl 128] White
is in trouble.} 32. Ng5+ (32. c4 exf3 33. Qxf3 Qxf3 34. gxf3 bxc6 35. Rxe8 Rxe8
36. h5) 32... hxg5 {Black is clearly winning.} 33. Bxg5 Rxc6 34. Re3 (34. Kf1
$142) 34... Bf4 ({Not} 34... Nxh4 35. Bxh4 Bf4 36. Rh3 $11) 35. Rh3 e3 36. f3
Qe6 37. Qc2 {[#] and if Bxf4 works, White does fine.} e2 $1 38. Re1 Qe3+ 39.
Kh1 Rxc3 40. Bxf4 Rxc2 41. Bxe3 Rxe3 {Weighted Error Value: White=0.65/Black=0.
14} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.16"]
[White "Demchenko, Anton"]
[Black "Fedoseev, Vladimir"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2651"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "140"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,140,9,11,13,13,13,10,13,10,0,19,16,26,2,10,6,0,-12,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,-53,-47,-37,-23,-42,-41,-41,-41,-83,-19,-23,0,-82,-79,
-85,-85,-85,-85,-85,0,-76,-79,-77,-72,-5513,-5513,-5202,-4,-83,-84,-88,-8,-96,
-96,-96,-63,-63,-63,-84,-63,-63,-63,-63,-63,-63,-63,-64,-31,-16,-16,-63,-63,
-63,-63,-63,-63,-63,-63,-63,-63,-63,-63,-91,-63,-63,-47,-63,-63,-63,-63,-70,0,
0,0,0,0,-59,0,0,0,0,0,-5,-8,-27,-34,-29977,-29978,-29978,-29979,-29979,-29980,
-29980,-29981]} 1. e4 c6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Nxc6 {
B12: Caro-Kann: Advance Variation.} bxc6 7. Bd3 e6 8. O-O {The position is
equal.} Ne7 9. Nd2 a5 10. Nf3 Ng6 11. Re1 Ba6 {[#]} 12. Bxa6 $146 ({
Predecessor:} 12. Bxg6 hxg6 13. Be3 Rb8 14. Rb1 Be7 15. c3 c5 16. a3 O-O 17.
Qd2 a4 18. Bg5 {1/2-1/2 (45) Pasztor,B (2204)-Ochedzan,T (2219) Budapest 2021})
12... Rxa6 {[%cal Ba8a6,Ba6b6,Bb6b2][%mdl 32]} 13. Qe2 Rb6 14. Be3 Rxb2 15. Qa6
Bb4 ({Avoid the trap} 15... Rxc2 $2 16. Bb6 $18) 16. c3 Be7 17. Qxc6+ Qd7 $1 {
[%cal Rd7c6]} 18. Qa8+ Bd8 19. Rab1 Rxb1 20. Rxb1 {Bc5 is the strong threat.}
O-O 21. Bc5 Be7 22. Qxa5 Bxc5 $40 {[%mdl 128] Black mounts an attack.} 23. Qxc5
Qa4 24. h3 (24. Ra1 $11) 24... Qxa2 $15 25. Rb4 h6 26. h4 Qc2 27. Kh2 Qf5 28.
Qd4 Ne7 (28... Rc8 $1 $17) 29. Qc5 $11 Ng6 (29... Re8 $11) 30. Qd4 $17 Rc8 $1
31. c4 Rxc4 32. Rxc4 dxc4 33. Qxc4 Nf4 (33... Nxe5 $17 34. Nxe5 Qxe5+ 35. Kh3
g6) 34. Kg3 (34. Qc8+ $1 $11 Kh7 35. Qb7) 34... g5 $1 35. hxg5 hxg5 {Threatens
to win with ...Ne2+!} 36. Qc8+ $2 {[%mdl 8192]} (36. Kh2 $17) 36... Kg7 $19 {
( -> ...Ne2+)} 37. Qc4 {[#]} Nh5+ $2 (37... Ne2+ $1 $19 {[%mdl 512] and Black
stays clearly on top.} 38. Kh2 Qh7+ 39. Nh4 Qxh4+ 40. Qxh4 gxh4) 38. Kh2 $17 g4
39. Nd2 Qg5 ({Don't play} 39... Qxf2 $6 40. Qxg4+ Kh6 41. Nf3 $11) (39... Qxe5+
$17 40. g3 f5) 40. Nf1 (40. Qc3 $1 $11 {remains equal.}) 40... Qxe5+ 41. g3 f5
42. Ne3 Nf6 43. Ng2 Qd6 44. Nf4 Kf7 45. Qa2 Qb6 46. Nd3 Ne4 47. Qa1 Qd8 48.
Qa7+ Kg8 49. Ne5 {Intending Qf7+ and mate.} Ng5 50. Qe3 Qf6 51. Kg2 Qg7 52. Kf1
Kh7 53. Ke2 Kh6 54. Qd4 Qb7 55. Nd7 Kh7 {White must now prevent ...Nf3.} 56.
Ne5 Qb8 57. Nd3 Qc7 58. Ne5 $1 Kg8 (58... Qc2+ {is more complex.} 59. Kf1 Qb1+
60. Kg2 Qb7+ 61. Kf1 Nf7) 59. Kf1 Nf3 (59... Qc1+ $15 60. Ke2 Qc7) 60. Nxf3 $11
gxf3 {[%mdl 4096] Endgame KQ-KQ} 61. Qe3 Qc6 62. Ke1 ({Better is} 62. Qg5+ $11
Kf7 63. Qh5+ Kf6 64. Kg1) 62... Qd5 ({Black should try} 62... Kf7 $15) 63. Qg5+
$1 Kf7 64. Qh5+ Ke7 65. Qh4+ Ke8 66. Qa4+ (66. Qh8+ {looks sharper.} Kd7 67.
Qg7+ Kd6 68. Qf8+ Kc6 69. Qc8+) 66... Kf7 {Strongly threatening ...Qd3.} 67.
Kf1 $2 {[%mdl 8192]} (67. Qh4 $15) 67... Qd2 {Black mates.} 68. Qa7+ {[#]} Kg6
$1 {[%cal Rd2d1]} 69. Qa1 Qh6 {[%cal Rh6h1]} 70. Kg1 Qh3 {[%csl Gf3][%cal
Rh3g2] Weighted Error Value: White=0.19/Black=0.21} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.17"]
[White "Xiong, Jeffery"]
[Black "Ter-Sahakyan, Samvel"]
[Result "1/2-1/2"]
[ECO "B52"]
[WhiteElo "2700"]
[BlackElo "2607"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,63,4,0,0,0,12,0,39,20,29,0,29,13,18,0,0,0,0,0,50,10,0,0,0,0,36,39,51,
49,51,39,90,0,78,81,102,81,35,62,104,86,79,81,87,83,86,82,98,0,0,0]} 1. e4 c5
2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. O-O Ngf6 6. Qe2 e6 7. d4 cxd4 8. Nxd4
Qa5 {8...a6 is becoming the main line. B52: Sicilian: Moscow Variation with 3..
.Bd7.} 9. Rd1 Rc8 10. c4 {[#]} Qh5 $146 ({Predecessor:} 10... a6 11. b3 g5 12.
Bb2 Rg8 13. Nd2 g4 14. Kh1 h5 15. a3 h4 16. f4 gxf3 17. gxf3 {1/2-1/2 (42)
Baglan,E (2359)-Bjerre,J (2546) Belgrade 2021}) 11. f3 a6 12. Be3 Ne5 13. Nd2
Be7 14. Rac1 O-O 15. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Rc7 16. Kh1 h6 17. a4
Rfc8 18. N4b3 Nfd7 19. Qf1 Kh8 20. b5 Ra8 21. h3 Nf6 22. Bf4 Qh4 {[#]} (22...
axb5 $14 23. axb5 Ng6) 23. Bh2 (23. g3 $1 $16 {[%cal Rg3h4]} Qh5 24. g4) 23...
Ned7 (23... Nh5 $1 $11 {remains equal.}) 24. f4 $16 Qh5 25. e5 dxe5 26. fxe5
Ne8 27. a5 axb5 28. cxb5 Rxc1 29. Rxc1 Nxe5 30. g4 Qg5 31. Qg2 (31. a6 $16 bxa6
32. b6) 31... Nd3 $11 32. Qxb7 {Weighted Error Value: White=0.17/Black=0.17}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.18"]
[White "Tari, Aryan"]
[Black "Artemiev, Vladislav"]
[Result "0-1"]
[ECO "C66"]
[WhiteElo "2646"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,90,29,28,33,45,26,29,25,31,29,33,26,28,24,41,0,0,0,5,2,15,10,12,-4,4,
0,0,-14,-8,-12,-17,-14,-6,-11,0,-16,-9,-22,-22,-28,-17,-17,-21,-28,-23,-19,-19,
-30,-25,-93,-89,-99,-97,-102,-110,-102,-98,-85,-81,-115,-103,-133,-113,-114,
-95,-142,-129,-282,-275,-350,-295,-315,-315,-315,-315,-749,-740,-739,-726,-949,
-920,-879,-862]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 d6 5. O-O Bd7 6. Re1 {
C66: Ruy Lopez: Steinitz Defence.} g6 7. c3 Bg7 8. h3 {White has an edge.} O-O
9. a4 {9.a4 is the modern continuation.} Re8 10. Nbd2 h6 11. Bc4 Be6 {[#]} 12.
a5 $146 ({Predecessor:} 12. Bxe6 Rxe6 13. b4 a5 14. b5 Nb8 15. d4 Nbd7 16. Bb2
Qe8 17. Qc2 d5 18. dxe5 Nxe5 19. Nd4 {1-0 (49) Gierulski,K (2270)-Karpus,M 
(2179) Sypniewo 2021}) 12... Bxc4 13. Nxc4 b5 14. axb6 axb6 15. Rxa8 Qxa8 16.
Qb3 Nb8 17. Be3 Nbd7 18. Qb5 Bf8 19. Qb3 d5 20. Ncd2 Qc6 21. Qd1 b5 22. Qc1 Kh7
23. Qb1 b4 24. Rc1 Qb7 25. Qa2 bxc3 26. bxc3 Ra8 27. Qc2 Ra3 28. Nb1 Ra1 {
[%cal Rd5e4]} 29. Nfd2 (29. exd5 $11 {remains equal.} Nxd5 30. Bd2) 29... dxe4
$17 30. dxe4 Bc5 31. Re1 Bxe3 32. Rxe3 Nc5 33. Kh2 c6 34. Re1 Qa7 35. Re3 Kg7
36. c4 Ra2 37. Qc3 Qb8 38. f3 $2 {This move loses the game for White.} (38. Re1
$17 {was worth a try.}) 38... Nh5 $19 39. Qc1 Nf4 40. Ra3 {[#]} Rb2 41. Qc3 {
intending Ra8.} Ne2 42. Qa5 (42. Qe3 Nd4 43. Qc3) 42... Qd6 {( -> ...Qd4).
Black is clearly winning.} 43. Re3 Nf4 44. g3 {[#]} Qd4 $1 45. Qc3 {[#]} Ncd3
$1 {Weighted Error Value: White=0.34/Black=0.04} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.19"]
[White "Navara, David"]
[Black "Keymer, Vincent"]
[Result "0-1"]
[ECO "D40"]
[WhiteElo "2691"]
[BlackElo "2630"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,92,27,8,0,0,0,0,0,-6,0,0,0,0,-4,-23,-25,-58,-37,-81,-79,-93,-102,-98,
-73,-143,-112,-120,-120,-204,-217,-216,-231,-206,-180,-254,-260,-336,-265,-370,
-361,-339,-352,-453,-443,-456,-463,-469,-479,-611,-604,-589,-592,-541,-564,
-485,-496,-856,-852,-1526,-989,-2283,-2214,-1781,-1681,-29980,-29981,-29981,
-29982,-29982,-29983,-29983,-29984,-29984,-29985,-29983,-29984]} 1. d4 Nf6 2.
c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 dxc4 7. Bxc4 a6 8. O-O b5 9. Ba2 Bb7
10. Qe2 {10.d5 is the hot move.} Qc7 {D40: Queen's Gambit Declined:
Semi-Tarrasch with 5 e3.} 11. d5 exd5 12. Nxd5 Nxd5 {The position is equal.}
13. Bxd5 Be7 14. a4 Qb6 15. e4 O-O {[#]} 16. Bf4 $146 ({Predecessor:} 16. Bg5
Nd4 17. Nxd4 Bxg5 18. Bxb7 Qxb7 19. Nf5 g6 20. Nd6 Qc6 21. e5 c4 22. Rad1 {
1/2-1/2 (30) Sandipan,C (2507)-Fridman,D (2571) Pardubice 2002}) 16... Nb4 17.
a5 Qa7 18. Rfd1 Rae8 {Black continues to play with concentration.} 19. Bxb7
Qxb7 20. Ne5 Rd8 21. h4 (21. b3 $142) 21... Qc8 22. h5 h6 23. Ra3 (23. Bd2 $17)
23... Qe6 24. Rg3 Rxd1+ 25. Qxd1 Rd8 26. Qe2 (26. Qg4 $142 Qxg4 27. Nxg4) 26...
c4 $19 27. Ng4 {White wants to play Nxh6+.} Kh7 28. e5 Nd3 {[%cal Bb4d3,Bd3f2,
Bf2g4][%mdl 32]} 29. Bd2 Qf5 ({Resist} 29... Nxb2 30. Bxh6 gxh6 31. Qxb2 $19)
30. Ne3 {[#]} Qxf2+ {[%mdl 512]} 31. Qxf2 Nxf2 32. Nf5 Rxd2 33. Rxg7+ Kh8 34.
Rxf7 Bc5 {White must now prevent ...Ng4+.} 35. Kh2 Ng4+ 36. Kh3 Nxe5 37. Rf6 (
37. Rc7 $142 Bb4 38. Rc8+ Kh7 39. g4) 37... Rxb2 {Hoping for ...c3.} 38. Rxh6+
Kg8 39. Rxa6 c3 40. Ra8+ Kf7 {( -> ...c2)} 41. Rc8 {[#]} c2 $1 {Black mates.}
42. Rxc5 Nc4 43. Nd6+ Ke6 44. Nxc4 c1=Q {[%mdl 64] Pin} 45. Re5+ Kf6 46. Nxb2
Qc3+ {Weighted Error Value: White=0.64/Black=0.06} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.20"]
[White "Wojtaszek, Radoslaw"]
[Black "Niemann, Hans Moke"]
[Result "1/2-1/2"]
[ECO "D47"]
[WhiteElo "2691"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,61,-14,10,12,32,32,50,39,82,13,4,0,0,0,0,0,0,0,0,0,0,0,35,14,27,29,
142,131,155,0,14,0,28,0,0,0,20,0,0,0]} 1. d4 {Lautier,J} d5 2. c4 c6 3. Nf3 Nf6
4. Nc3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bb7 9. e4 b4 10. Na4 c5 11.
e5 Nd5 12. O-O h6 13. Bd2 {D47: Semi-Slav: Meran System.} a6 14. Re1 cxd4 15.
Rc1 {[#] White is slightly better.} Be7 $146 ({Predecessor:} 15... Rc8 16. Rxc8
Qxc8 17. Nxd4 Nc5 18. Nxc5 Bxc5 19. Qg4 Bxd4 20. Qxd4 O-O 21. Qe4 f5 22. exf6
Rxf6 {1-0 (40) Lautier,J (2666)-Akopian,V (2703) Enghien les Bains 2003 CBM
096 [Lautier,J]}) 16. Rc4 (16. Nxd4 $16 {Qg4 is the strong threat.} Bg5 17. Nc6
Bxc6 18. Rxc6) 16... Rc8 $11 17. Rxd4 Nc5 18. Nxc5 Bxc5 19. Rg4 Kf8 20. Qe2 a5
21. h4 g6 22. Rc1 Bb6 23. Rd1 Qd7 24. a3 Qe7 (24... bxa3 $11 25. bxa3 Qe7) 25.
axb4 $16 Nxb4 {[#]} 26. Bc4 (26. Bxg6 $1 $16 fxg6 27. Rxg6) 26... Rd8 $11 27.
b3 Rd7 28. Bb5 Rd8 {The position is equal.} 29. Bc4 Rd7 30. Bb5 Rd8 31. Bc4 {
Weighted Error Value: White=0.19/Black=0.19} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.21"]
[White "Yilmaz, Mustafa"]
[Black "Grandelius, Nils"]
[Result "1/2-1/2"]
[ECO "D98"]
[WhiteElo "2626"]
[BlackElo "2662"]
[Annotator "TA"]
[PlyCount "49"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,38,23,33,0,0,0,0,0,9,0,0,-1,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4
g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Bg4 8. Be3 Nfd7 9. Rd1 $1
{[%mdl 4] now scores much better than the old 9.Qb3.} Nc6 10. Qb3 {D98:
Grünfeld: Russian System: 7 e4 Bg4 .} e5 {The position is equal.} 11. dxe5 $1
Ncxe5 12. Be2 {[#] And now Nxe5 would win.} Be6 13. Qxb7 Rb8 14. Qxa7 Ra8 15.
Qb7 Rb8 16. Qa7 Ra8 17. Qb7 Rb8 18. Qa7 Ra8 19. Qb7 Rb8 {[#] A rather calm
draw.  Weighted Error Value: White=0.06/Black=0.01} {Predecessor:} 20. Qa6 $146
Nxf3+ 21. Bxf3 Rxb2 22. Qa3 Rc2 23. Nd5 Qa8 24. Qxa8 Rxa8 25. O-O {1/2-1/2 (22)
Shipov,S (2510)-Avrukh,B (2430) Groningen 1995} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.22"]
[White "Ponkratov, Pavel"]
[Black "Kuzubov, Yuriy"]
[Result "0-1"]
[ECO "C43"]
[WhiteElo "2659"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,80,1,0,3,1,0,0,0,0,5,0,17,-4,20,-12,16,-59,-59,-36,-59,-50,-19,-70,
-62,-92,-79,-124,-131,-128,-125,-121,-117,-129,-127,-128,-129,-125,-122,-145,
-143,-143,-141,-235,-223,-248,-207,-214,-219,-217,-222,-206,-202,-211,-215,
-198,-199,-290,-237,-268,-261,-412,-414,-650,-647,-823,-822,-812,-799,-725,
-409]} 1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. O-O Nxe5 7. dxe5
Nc5 {C43: Petroff Defence: 3 d4.} 8. Be3 (8. f4 g6 9. Be3 Nxd3 10. Qxd3 c5 11.
Rd1 d4 12. Bf2 Bg4 13. Rd2 Qd7 14. c3 Bh6 15. h3 Bf5 16. Qg3 Bxb1 17. Qh4 Qf5
18. Qxh6 {1-0 (51) Ponkratov,P (2629)-Kuzubov,Y (2653) Krasnaya Polyana 2021})
8... Nxd3 9. Qxd3 b6 $5 {[%mdl 4] The position is equal. Exploring less
charted territory.} 10. Nc3 c6 11. Ne2 {[#]} Qc7 $146 ({Predecessor:} 11... Be7
12. f4 O-O 13. f5 Re8 14. Ng3 Bf8 15. e6 fxe6 16. f6 gxf6 17. Nh5 f5 {1/2-1/2 
(33) Bulgarini Torres,M (2283)-Silva,F (2266) ICCF email 2018}) 12. f4 Bb7 13.
c4 O-O-O 14. Rac1 (14. cxd5 $11 Rxd5 15. Qc2) 14... Ba6 $1 $15 15. b3 Ba3 16.
Rc2 c5 17. Ng3 (17. Nc3 $1 $11 dxc4 18. Qe2) 17... g6 $1 18. Bf2 {White is on
the road to losing.} Rhe8 19. Nh1 dxc4 20. Qe2 Qd7 21. bxc4 Qd3 22. Ng3 f5 23.
Be1 Qxe2 24. Nxe2 Rd3 25. Nc3 Bxc4 26. Nb1 Bb5 27. Bc3 {[#]} (27. Rf3 $17 Bb4
28. Bxb4 Rd1+ {[%mdl 64] Double Attack} 29. Kf2 Rxb1 30. Be1) 27... Ba4 $1 $19
28. Rcf2 {[#]} (28. Re2 a5) 28... c4 $1 {White must now prevent ...Bc5.} 29.
Nxa3 {And now Bb4 would win.} Rxc3 30. Nb1 Rd3 31. Rc1 {[#]} Kb7 $1 32. Rb2 Rc8
33. Nc3 Bd7 34. Re2 (34. g3 {was called for.}) 34... Be6 35. Nb5 {Nd6+ would
now be nice for White.} Rc5 36. a4 (36. Nc3 $142) 36... c3 37. Rec2 (37. Nd6+
$142 Kc6 38. Nb5) 37... a6 {Black is clearly winning.} 38. Nd6+ Kc6 39. Kf2 Bb3
{[%mdl 64] Double Attack} 40. Re2 Rd2 {Weighted Error Value: White=0.35/
Black=0.05} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.23"]
[White "Pichot, Alan"]
[Black "Aronian, Levon"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2628"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,79,49,54,18,22,20,47,39,11,45,45,46,31,43,-56,-65,-67,-64,-128,-91,
-101,-80,-104,-116,-129,-131,-122,-145,-133,-141,-218,-205,-221,-214,-264,-275,
-266,-304,-302,-295,-302,-295,-314,-305,-293,-258,-247,-244,-468,-447,-646,
-647,-2422,-2206,-29982,-29983,-29998,-29999,-29999]} 1. e4 e5 2. Nf3 Nc6 3.
Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. c3 b5 7. Bb3 d6 8. a4 Bb7 9. d4 Bb6 10. Re1 O-O
$1 {10...0-0 is better than 10...h6.} 11. Bg5 h6 12. Bh4 exd4 {C78: Ruy Lopez:
Archangelsk and Möller Defences.} 13. cxd4 g5 14. Nxg5 hxg5 {White is slightly
better.} 15. Bxg5 {Hoping for Bd5.} Nxd4 16. Bd5 {[%cal Rd5b7]} c6 {[#]} (16...
Bxd5 17. exd5 Kg7 18. Nc3 $11) 17. Ra3 $1 {[%cal Ra3g3][%mdl 1024] White has
compensation.} Re8 {[#]} (17... cxd5 $2 18. Rg3 $18) (17... Ne6 18. Bxe6) 18.
Ba2 (18. a5 $1 $14 Ba7 (18... cxd5 19. Rg3) 19. Rg3) 18... Re5 $1 $15 {[%cal
Re5g5]} 19. Rg3 {Intending Bxf6+ and mate.} Kf8 {[#] Strongly threatening ...
Qe7.} 20. Nd2 $146 {[#] Black converts the advantage convincingly.} (20. Qd2
$15) ({Predecessor:} 20. h4 Qe7 21. Nd2 d5 22. a5 Ba7 23. Bb1 Rd8 24. Qc1 Qe6
25. Nf3 dxe4 26. Bxf6 Qxf6 27. Nxe5 {1-0 (55) Raja,H (2459)-Milikow,Y (2299)
Banja Vrujci 2021}) 20... Rxg5 $1 21. Rxg5 c5 22. Bb1 c4 23. h4 Ne6 {[%cal
Bd4e6,Be6g7,Bg7h5][%mdl 32]} 24. Rf5 Ng7 25. Rg5 Nh7 $36 {[%mdl 2048] Black
has strong initiative.} 26. Rg3 (26. Rg4 $17 Nf6 27. Rg5) 26... Qf6 $1 $19 ({
Less strong is} 26... Qxh4 27. Nxc4 Bc5 28. Ne3 $17) 27. Nf3 Qf4 {...Qxg3 is
the strong threat.} 28. Nd4 Qe5 (28... Qxh4 29. Rxg7 $1 {[%mdl 512]} Bxd4 30.
Qxd4 $16) 29. Ne2 Nh5 30. Rf3 {[#] And now Rf5 would win.} Bc8 31. Qd5 Qxd5 32.
exd5 N7f6 33. Bf5 Ng4 ({Not} 33... Nxd5 34. Be4 $11) (33... bxa4 34. Ra1 $17)
34. Bxc8 Rxc8 35. Nc3 $2 (35. axb5 {was worth a try.} axb5 36. Nc3) 35... b4
36. Ne4 (36. Nd1 $142 c3 37. bxc3 bxc3 38. Nxc3 Bxf2+ {[%mdl 64] Deflection}
39. Rxf2 Nxf2 40. Kxf2 Rxc3 41. Re4) 36... Re8 37. Rxf7+ Kxf7 ({Weaker is} 
37... Kg8 38. Rf5 $15) 38. Nxd6+ Kg6 {[%cal Re8e1] Black mates.} 39. Rxe8 Bxf2+
{[%mdl 64] Double Attack} 40. Kh1 Ng3# {Weighted Error Value: White=0.68/
Black=0.03} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.24"]
[White "Donchenko, Alexander"]
[Black "Hovhannisyan, Robert"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2648"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "264"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,264,18,29,5,9,14,13,9,25,31,29,22,24,23,21,14,34,25,28,40,29,20,66,73,
66,15,150,127,143,142,200,200,193,184,160,75,75,72,80,78,78,78,78,75,93,65,68,
70,72,73,74,68,74,68,70,68,106,68,104,60,75,72,80,60,74,60,80,60,77,73,75,60,
82,68,81,74,74,74,75,68,79,0,80,0,84,0,94,0,86,86,87,70,72,70,79,69,79,87,94,
68,98,37,72,55,73,73,73,31,35,31,34,31,87,40,73,34,73,34,35,31,41,42,86,36,34,
34,34,34,34,34,34,34,36,35,36,35,36,36,37,37,37,37,37,34,34,14,17,24,34,8,8,0,
0,0,0,0,0,0,0,0,0,0,7,0,8,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,69,31,
69,69,69,69,69,69,69,69,69,69,69,69,69,8,8,8,63,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,8,0,8,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4
d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. h3 Bh5 6. cxd5 {D11: Slav Defence: 3 Nf3
sidelines and 3...Nf6 4 e3 Bg4.} cxd5 {is the legacy move (6...Bxf3).} 7. Nc3
e6 8. Qb3 Bxf3 {[#]} 9. Qxb7 $146 ({Predecessor:} 9. gxf3 Qd7 10. Bd2 Nc6 11.
Rc1 Be7 12. Na4 O-O 13. Bb5 Rfc8 14. Ke2 Qd8 15. Nc5 {0-1 (56) Shyam,S (2502)
-Nabaty,T (2579) Golden Sands 2013}) 9... Bxg2 10. Bxg2 Nbd7 11. O-O Be7 12. e4
$36 {[%cal Re4d5][%mdl 2048] White has the initiative.} Rb8 13. Qxa7 {
Threatening Bf4.} Ra8 14. Qb7 Rb8 15. Qa6 dxe4 16. a4 {[%cal Ba2a4,Ba4a5][%mdl
32]} O-O 17. Qe2 ({White should try} 17. a5 $14) 17... e5 (17... Qa5 $11) 18.
dxe5 $16 ({Don't do} 18. Nxe4 $6 exd4 19. Bf4 Rb4 $14) 18... Nxe5 19. Nxe4 Nd3
{[#]} (19... Qa5 $16 {was necessary.} 20. Bf4 Rfe8) 20. a5 $1 $18 {[%cal Ra5a6]
} Nxc1 21. Rfxc1 Nxe4 22. Qxe4 (22. Bxe4 $142 Bf6 23. Rc2) 22... Rxb2 $16 {
Black wants to play ...Bh4.} 23. a6 Bh4 24. a7 Bxf2+ 25. Kh1 Bxa7 26. Rxa7 Rd2
27. Qg4 Rd4 28. Qe2 g6 29. Rf1 Rd7 30. Ra2 Re7 31. Qc4 Qc7 32. Qh4 Qe5 33. Raf2
Rc7 34. Qa4 Re7 35. Qc4 Qe6 36. Qb5 Qe3 37. Rf4 Qe2 38. Qb4 {Black must now
prevent Bd5.} Qe3 39. R4f3 Qe5 40. Qa3 Qe2 41. R1f2 Qe6 42. Rf6 Qe1+ 43. Rf1
Qe3 44. Qb4 Qe5 45. R6f4 Qe3 46. R4f3 Qe5 47. Qa3 Qe2 $1 48. R1f2 Qe6 49. Bf1 {
Re2 is the strong threat.} Rb7 50. Re3 Qc6+ 51. Kg1 Rc7 52. Ref3 Qb6 53. Rf6
Qc5 54. Qg3 Re7 55. h4 (55. Qf4 $16) 55... Qe5 56. Qg4 Qc5 57. Bc4 {Strongly
threatening Qf4.} Kg7 58. R6f5 Re5 59. R5f4 {[%cal Rc4f7]} ({Avoid the trap} 
59. Rxf7+ $2 Rxf7 60. Bxf7 Rf5 $19) 59... Re1+ 60. Kh2 {[%cal Rf4f7]} Re7 ({
Better is} 60... f5 $14 61. Qg3 Re3) 61. Qf3 {Hoping for Qc3+.} Qe3 62. Qc6 Qe5
63. Kg2 f5 64. Qf3 Qf6 65. Qg3 Re5 66. Rd4 Rfe8 67. Bd5 Re2 68. Rb4 {Threatens
to win with Bf3.} Qe5 69. Qxe5+ R8xe5 70. Rb7+ Kh6 {[#] aiming for ...Rxf2+.}
71. Rxe2 Rxe2+ $14 {[%mdl 4096] Endgame KRB-KR} 72. Kf3 {Intending Bg8 and
mate.} Rh2 73. Kg3 Rd2 74. Bg8 {[%csl Gg8][%cal Rb7h7]} (74. Rb5 {is
interesting.} Kg7 75. Bc4 Rd6 76. Rc5 Rd1 77. Rc7+) 74... Rd3+ 75. Kf2 {
[%csl Gg8][%cal Rb7h7]} Kh5 76. Bc4 Rd2+ 77. Ke3 (77. Kg3 {is interesting.} g5
78. Bf7+ Kh6 79. Rb6+ Kg7 80. Be6) 77... Rh2 78. Rxh7+ Kg4 79. Be2+ Kg3 80. Rh6
f4+ $1 81. Kd3 f3 82. Rxg6+ Kf4 $1 83. Rf6+ Ke5 84. Rxf3 Rxh4 85. Rf8 Rd4+ 86.
Kc3 {Re8+ would kill now.} Rd6 (86... Rh4 {feels hotter.} 87. Rd8 Ke6 88. Rd4
Rh2 89. Bc4+ Ke7) 87. Bc4 Ke4 88. Re8+ Kf5 89. Bd3+ Kf4 90. Be4 Rd7 91. Kc4 Ra7
92. Bd5 (92. Kd5 {keeps more tension.} Ra5+ 93. Kc6 Ra6+ 94. Kc7 Ra7+ 95. Bb7)
92... Ra4+ 93. Kc5 Ra1 94. Kd6 Ra6+ 95. Bc6 Ra5 96. Re4+ (96. Rf8+ {feels
hotter.} Rf5 97. Ra8 Rf6+ 98. Kd5 Rh6 99. Rf8+) 96... Kf5 97. Re3 Kf4 (97...
Ra6 {with more complications.} 98. Rh3 Ra2 99. Rf3+ Kg4 100. Bd5 Re2) 98. Rf3+
Kg5 (98... Kg4 $11) 99. Bd5 Kg4 100. Rf7 (100. Rf1 {looks sharper.} Kg3 101.
Rf8 Rb5 102. Ke5 Kg4 103. Rf1) 100... Kg5 101. Ke5 Rb5 102. Rg7+ Kh5 103. Rg2 (
103. Rh7+ {is interesting.} Kg5 104. Rd7 Ra5 105. Rg7+ Kh4 106. Rg8) 103... Ra5
104. Rg1 Rb5 105. Kd4 (105. Rh1+ {keeps more tension.} Kg6 106. Rh2 Kg5 107.
Rg2+ Kh6 108. Ke6) 105... Kh6 106. Be4 (106. Rf1 $14) 106... Rg5 $1 $11 107.
Rf1 Ra5 ({Black should play} 107... Kg7 $11) 108. Ke3 (108. Bd5 $1 $14) 108...
Kg5 {The position is equal.} 109. Rg1+ Kf6 $1 110. Kf4 Ra2 111. Rg6+ Ke7 112.
Bf5 Rf2+ 113. Kg5 Re2 114. Ra6 Re1 115. Bg4 Re5+ 116. Kf4 (116. Kg6 {is more
complex.} Re1 117. Ra7+ Kd6 118. Rd7+ Kc6 119. Rd2) 116... Re1 117. Rb6 Rf1+
118. Ke5 Re1+ (118... Ra1 {keeps more tension.} 119. Kd4 Ra4+ 120. Ke3 Ra3+
121. Kd4 Ra4+) 119. Kd5 Re3 (119... Ra1 {looks sharper.} 120. Rh6 Ra5+ 121. Ke4
Ra4+ 122. Kf5 Rb4) 120. Bf5 Re1 (120... Kf8 {with more complications.} 121. Bh7
Ke7 122. Kc4 Re1 123. Kb5 Rh1) 121. Be4 Rd1+ 122. Ke5 Re1 (122... Rd2 {seems
wilder.} 123. Rb8 Kf7 124. Rb7+ Ke8 125. Rb8+ Ke7) 123. Rb7+ Ke8 124. Kd5 Kf8
125. Bf5 Re7 (125... Re3 {is interesting.} 126. Kd6 Re2 127. Rb8+ Kg7 128. Kc5
Kf6) 126. Rb1 Re2 127. Bg4 Re3 128. Be6 Ke7 129. Rh1 Rd3+ 130. Ke4 Rd2 131. Bc4
Kd6 132. Bd5 Rxd5 {Blacks defense is rewarded with a draw.  Weighted Error
Value: White=0.17/Black=0.11} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.25"]
[White "Swiercz, Dariusz"]
[Black "Brkic, Ante"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "2647"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,81,14,20,16,18,9,15,11,26,22,36,13,17,21,26,9,13,0,18,0,38,18,55,0,5,
9,10,4,7,10,14,17,194,194,181,175,198,200,186,189,214,208,248,205,197,158,273,
258,339,316,402,332,437,245,437,238,238,238,254,255,275,225,245,242,469,467,
650,618,579,376]} 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Bb4+ 5. Nd2 O-O 6. Ngf3 b6
{The main line 6...b6 scores better than 6...dxc4.} 7. O-O Bb7 8. b3 {E16:
Queen's Indian: 4 g3 Bb7 5 Bg2 Bb4+.} Re8 9. Bb2 Nbd7 10. Rc1 {The position is
equal.} Rc8 {[#]} 11. e3 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:
} 11. Ne5 Nxe5 12. dxe5 Ne4 13. Nxe4 dxe4 14. a3 Qxd1 15. Rcxd1 Be7 16. f4 Red8
17. e3 {1/2-1/2 (41) Socko,B (2627)-Gajewski,G (2613) Warsaw 2019}) 11... c5
12. cxd5 Bxd5 13. Nc4 {Threatens to win with Nd6.} cxd4 14. Qxd4 Bc5 15. Qd3
Qe7 16. Rfd1 Red8 17. Qe2 h6 18. Nfe5 Nxe5 19. Nxe5 Ne4 20. Nd3 Ba3 21. Rxc8
Rxc8 22. Nf4 Bb7 {This move loses the game for Black.} (22... Bxb2 $11 {
and Black has nothing to worry.} 23. Nxd5 exd5 24. Qxb2 Qe6) 23. Bxe4 $18 {
[%mdl 64] Overworked Piece} Bxe4 {[#]} 24. Qa6 $1 {[%csl LRa3,LRc8][%mdl 64]
Double Attack} Rd8 25. Rxd8+ {[%mdl 64] Overworked Piece} Qxd8 26. Bxa3 g5 27.
Ng2 Qd2 28. Qc8+ Kh7 {( -> ...Qd1+)} 29. Qc1 Qe2 (29... Qxa2 $16 {keeps
fighting.} 30. Ne1 Qxb3) 30. Ne1 g4 31. Bb2 h5 32. a3 ({Much less strong is} 
32. Qc3 e5 $18) 32... Kg6 33. Bc3 (33. Qa1 $142) 33... Kf5 $2 (33... f6 {
is a better defense.} 34. Bb4 e5) 34. Qd2 (34. Bb4 $142 a5 {[#]} 35. Qc7 $1)
34... Qxd2 35. Bxd2 Bd5 36. b4 e5 37. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} f6 38.
a5 b5 $2 (38... Bc6 39. f4 gxf3) 39. Nd3 {White is clearly winning.} Ke4 40.
Nc5+ Kf3 41. Kf1 {Weighted Error Value: White=0.22/Black=0.51} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.26"]
[White "Abdusattorov, Nodirbek"]
[Black "Kollars, Dmitrij"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2646"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "159"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,159,14,22,3,29,0,0,0,18,16,29,35,39,12,16,37,27,16,27,27,58,65,64,60,
67,56,42,60,61,34,47,31,28,20,30,0,0,0,22,0,0,0,0,0,0,0,8,0,0,0,0,-4,-4,-8,-8,
-9,-7,-19,-19,-10,3,0,0,0,76,76,76,76,76,75,85,85,75,47,84,53,50,41,67,41,41,
41,41,0,67,81,49,13,13,13,13,13,13,13,13,5,6,13,14,0,65,0,65,27,70,81,82,89,89,
89,89,89,89,89,89,89,435,435,435,431,1335,1289,1257,1195,1194,1202,1202,1199,
1196,1196,1196,1174,1153,1059,29957,29962,29962,29964,29965,29966,29965,29967,
29966,29968,29968,29969,29969,29969,29968,29968,29968,29967]} 1. c4 e5 2. g3 c6
3. d4 e4 4. d5 Bb4+ 5. Bd2 Qe7 6. e3 {A20: English Opening: 1...e5.} Nf6 7. Bg2
Na6 8. Ne2 {The position is equal.} cxd5 9. cxd5 {[#]} Nxd5 $146 ({Predecessor:
} 9... O-O 10. Bxb4 Qxb4+ 11. Qd2 Nxd5 12. Nbc3 Nxc3 13. Nxc3 d5 14. O-O Be6
15. Rfd1 f5 16. Nxd5 Qxd2 17. Rxd2 {1/2-1/2 (26) Szczepanski,Z (2475)-Schuster,
P (2454) ICCF email 2016}) 10. Nbc3 Nf6 11. Nf4 {[%mdl 1024] White has
compensation.} (11. a3 $5 {[%cal Ra3b4]} Bxc3 12. Bxc3 $14) 11... O-O 12. O-O
Qe5 13. Qb3 d5 $1 14. a3 Bc5 15. Nfxd5 Nxd5 16. Qxd5 Qxd5 17. Nxd5 f5 {[#]
White must now prevent ...Rd8.} 18. Bc3 Be6 19. Nf4 Bb3 20. g4 fxg4 21. Bxe4
Rf7 22. Nd3 Re8 23. Bg2 Bd6 24. Bd4 b6 25. Rac1 Rc7 26. Rc6 Rxc6 27. Bxc6 Re7
28. Rc1 Nc7 29. Rc3 Bf7 30. Kg2 h5 31. e4 Ne6 32. Be3 Rc7 33. Rc1 g5 34. e5 Bc5
(34... Be7 {seems wilder.} 35. f3 gxf3+ 36. Bxf3 Rxc1 37. Nxc1 g4) 35. Nxc5
Rxc6 36. Nxe6 Rxc1 (36... Rxe6 $11 37. Rc8+ Be8) 37. Bxc1 $16 Bxe6 38. Bxg5 $11
{[%mdl 4096] Endgame KB-KB} Kf7 39. Kg3 b5 40. b4 Bd7 41. Be3 a6 42. Kf4 Ke6
43. Ke4 Be8 44. Kd4 h4 45. Bg5 h3 46. Bf4 Bd7 (46... Kf5 $11 47. Bg3 Ke6) 47.
Kc5 $14 Be8 48. Kb6 Kd5 49. Kxa6 Ke4 50. Bg3 {aiming for e6.} Kd5 51. Kb7 Bd7
52. Kb6 Be8 $1 53. Kc7 Ke6 $1 54. Kb6 ({White should try} 54. Kb7 $11) 54...
Kd5 $1 55. Kb7 Bd7 $1 56. Kc7 Ke6 57. Bh4 Be8 58. Bf6 Bd7 59. Bh8 Be8 60. Kb6
Kd5 61. Bg7 Bd7 62. Kc7 Ke6 $2 {[%mdl 8192] [#] Black cannot hold the game
after this.} (62... Bf5 $16) 63. Bf8 $1 $18 Be8 64. Bd6 Bd7 (64... Kd5 $142 65.
Kd8 Bc6) 65. Bc5 Be8 66. Bd4 Bd7 67. Ba1 Be8 68. Kb6 Kd5 69. Ka6 Kc4 70. e6 Kd5
71. e7 Ke6 72. a4 {White mates.} bxa4 73. b5 Kxe7 74. b6 Bc6 75. b7 Bxb7+ 76.
Kxb7 Ke6 77. Kc6 Kf5 78. Kb5 a3 79. Kb4 a2 80. Kb3 {Weighted Error Value:
White=0.09/Black=0.09} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.27"]
[White "Saric, Ivan"]
[Black "Praggnanandhaa R"]
[Result "1-0"]
[ECO "C70"]
[WhiteElo "2644"]
[BlackElo "2618"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,147,31,58,37,37,34,41,32,39,36,39,32,39,45,37,47,56,37,57,44,60,66,59,
50,42,45,47,42,41,0,0,0,4,0,9,14,0,-29,0,0,0,-14,0,0,4,1,0,0,0,0,59,76,75,7,
350,343,316,245,230,206,237,234,229,233,232,220,204,197,178,118,115,110,243,
243,243,243,243,240,380,380,380,373,366,351,351,345,322,297,262,232,571,554,
591,536,454,378,1245,1277,12835,632,569,506,12838,12839,12838,12837,12836,
12836,12841,12833,1939,6222,927,446,12845,12844,12846,12847,12847,12845,12845,
12846,12846,12847,12847,12846,12850,12849,12850,12850,12850,27999,27999,27999,
27996,27996,27997,27997,27999,27999]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5
5. c3 Nge7 6. d4 {C70: Ruy Lopez: 3...a6 4 Ba4, Norwegian and Delayed
Schliemann.} exd4 7. cxd4 Bb4+ 8. Bd2 {White is slightly better.} Bxd2+ 9. Qxd2
d5 10. exd5 Nxd5 11. Bxc6+ bxc6 12. O-O O-O {[#]} 13. Rc1 $1 $146 {[%mdl 8] An
important novelty.} ({Predecessor:} 13. Nc3 Nxc3 14. Qxc3 Be6 15. Ne5 Bd5 16.
b3 a5 17. Nxc6 Bxc6 18. Qxc6 Qxd4 19. Qxc7 {1/2-1/2 (37) Giri,A (2764)-Van
Foreest,J (2671) Wijk aan Zee 2021}) 13... Ne7 14. Rc5 Re8 15. Nc3 f6 16. Re1
Bg4 17. Nh4 Qd7 {With the idea ...Ng6.} 18. h3 Be6 19. Re3 Nd5 20. Rg3 Kh8 21.
Nf3 Nxc3 22. Qxc3 Bd5 23. Qd3 Re4 24. Rc1 Rae8 25. Nd2 Re2 26. Nc4 Bxc4 27.
Qxc4 {[%mdl 64] Double Attack} h6 28. b4 Qd6 29. Rf1 Rb2 (29... Qd5 $11 30.
Qxa6 Rxa2) 30. a3 $1 $14 Ree2 31. Qxa6 ({Better is} 31. Rf3 $16) 31... Qxd4 $2
{[%mdl 8192]} (31... Qxg3 $1 $11 32. Qxe2 (32. fxg3 $2 {gets mated.} Rxg2+ {
[%mdl 64] Double Attack} 33. Kh1 Rh2+ {[%mdl 64] Double Attack} 34. Kg1 Rbg2#)
32... Qxa3 33. Qe8+ Kh7) 32. Qc8+ $18 ({Weaker is} 32. Qxc6 Rbc2 $16) 32... Kh7
{[%cal Re2f2]} 33. Qf5+ Kg8 34. Rd3 Qe5 35. Rd8+ Kf7 {[#]} 36. Rd7+ $1 $40 {
[%mdl 128] White is out for blood.} Ke8 37. Qxe5+ fxe5 38. Rxg7 {[%mdl 4096]
Endgame KRR-KRR} e4 39. Rxc7 (39. h4 $18) 39... e3 $16 {[%cal Re3f2]} 40. Rxc6
{Threatens to win with Re6+.} exf2+ (40... Kd7 $16 {keeps fighting.} 41. Rc5 (
41. Rxh6 $2 exf2+ 42. Kh2 Re1 $19) 41... exf2+ 42. Kh2 Re1) 41. Kh2 $18 Re1 42.
Rc1 Re3 43. a4 Rxb4 (43... Re4 $142 44. a5 Rexb4) 44. Rxf2 Rxa4 45. Rc8+ Ke7
46. Rc7+ Kd6 47. Rh7 Re6 48. Rb2 Kc6 49. Rbb7 Kd5 $2 {[#]} (49... Ra5 {is
tougher.} 50. Rb2 Kd5) 50. Rb5+ $1 Ke4 51. Rh5 Raa6 52. Rb7 Rg6 $2 (52... Kd3
53. g4 Re3 54. Rb3+ Kd4 55. Rxe3 Kxe3) 53. Rb4+ Ke3 54. Re5+ (54. Rf5 $142 Rgf6
55. Re5+ Kd2 56. Rbe4) 54... Kd3 55. Rf5 Ra2 (55... Kc3 $142) 56. Rf3+ Ke2 57.
Rb5 Rd2 58. Rb1 h5 59. Kg1 Rgd6 60. Rb5 Rd1+ 61. Kh2 R1d5 (61... h4 $142 62.
Re5+ Kd2) 62. Rb2+ Rd2 63. Rxd2+ Kxd2 {KR-KR} 64. Kg3 Rg6+ 65. Kf2 Rg5 66. Rf4
Kd3 67. g4 Re5 68. Kg3 Ke3 69. Rf5 Ke4 70. Rxe5+ Kxe5 {White mates.} 71. Kh4
hxg4 72. hxg4 Kf6 73. Kh5 Kf7 74. Kh6 {Weighted Error Value: White=0.25/
Black=0.33} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.28"]
[White "Bluebaum, Matthias"]
[Black "Jobava, Baadur"]
[Result "1-0"]
[ECO "D16"]
[WhiteElo "2640"]
[BlackElo "2582"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,80,20,54,54,65,51,69,13,41,35,37,37,70,20,53,35,45,39,61,66,140,91,93,
56,141,139,172,162,366,374,368,374,378,376,336,313,300,294,290,275,351,339,429,
431,467,452,530,537,533,512,552,541,532,518,602,579,562,563,553,569,560,551,
544,564,604,669,654,654,823,822,830,819,1008]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4.
Nc3 dxc4 5. a4 h6 6. e4 {[%mdl 1024] White has compensation. D16: Slav Defence:
5 a4: Lines with 5...Bg4 and 5...Na6.} Bg4 7. Be3 e6 {[#]} 8. Qc2 $146 (8. Bxc4
$14 Nbd7 9. O-O) ({Predecessor:} 8. Bxc4 Bb4 9. Bd3 O-O 10. O-O Nbd7 11. e5 Nh7
12. Qc2 g6 13. Bxg6 Kg7 14. Bxh7 Bxf3 15. gxf3 {1-0 (46) Sultana,S (2008)
-Marufa Azad,S (1164) Dhaka 2021}) 8... Bh5 9. Ne5 Nbd7 {White should prevent .
..Nxe5.} 10. Nxc4 Be7 11. h3 Bg6 12. Bd3 O-O 13. O-O Re8 14. Rad1 Nf8 ({
Better is} 14... Bh7 $14) 15. a5 Rc8 16. Bf4 Nh5 (16... Qxd4 $14 17. Be3 Qd8)
17. Bh2 $1 $16 Qxd4 {[#]} 18. Be5 $1 {[%cal Re5d4]} Qd8 (18... Qc5 {might work
better.}) 19. Be2 $18 Nd7 {[#]} 20. Rxd7 $1 {[%mdl 576] Clearance} Qxd7 21. Rd1
Qd5 22. Rxd5 ({Inferior is} 22. exd5 Bxc2 23. d6 Bxd1 $15) 22... cxd5 23. Nd2
Nf6 24. Qa4 Red8 25. a6 bxa6 26. Bxa6 {White is clearly winning.} Rc5 27. Nb3
dxe4 28. Nxc5 Bxc5 29. Qc6 Bf8 30. Bf4 Kh7 31. Be3 Rb8 32. Bb7 a5 33. Qc7 Bd6
34. Qxd6 Rxb7 35. Bb6 Rd7 36. Qa3 Rd2 37. Be3 Rd3 38. Qxa5 Nd7 39. Qc7 e5 40.
Na4 f5 {Weighted Error Value: White=0.10/Black=0.39} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.29"]
[White "Yakubboev, Nodirbek"]
[Black "Chigaev, Maksim"]
[Result "1/2-1/2"]
[ECO "D70"]
[WhiteElo "2621"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "142"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,142,39,42,43,31,31,39,25,-58,-54,-50,34,56,40,48,40,41,52,48,60,52,
71,76,96,97,117,39,41,10,14,20,9,7,27,-13,0,-57,-53,-61,-55,-54,-51,-45,-46,
-64,-63,-78,-77,-72,-77,-75,-77,-80,-64,-62,-44,-57,-39,-39,-24,-62,-47,-70,
-33,-33,-33,-33,-33,-63,-33,-33,-33,-41,-33,-40,-8,-12,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,-81,0,-79,-63,-79,0,-79,-79,-79,-79,-91,-85,-227,-150,
-150,-147,-127,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5
5. e4 Nb6 6. Nc3 Bg7 7. Be3 O-O 8. Qd2 Nc6 9. O-O-O f5 {D70: Grünfeld: Unusual
White 3rd moves (met by ...d5).} 10. h4 fxe4 11. h5 gxh5 {White is slightly
better.} 12. d5 (12. Rxh5 $11 Bf5 13. Bh6 Qxd4 14. Qxd4 Bxd4 15. Nge2) 12...
Ne5 $15 {[%cal Re4f3]} 13. Bh6 {[#]} Bxh6 $146 ({Stronger than} 13... exf3 14.
Bxg7 Kxg7 15. Rxh5 $16) ({Better is} 13... Nec4 $1 $15 14. Qg5 Rf7 15. Bxc4
Nxc4 16. Bxg7 Rxg7 17. Qxh5 Qf8) ({Predecessor:} 13... Nec4 14. Qg5 Rf7 15.
Bxc4 Nxc4 16. Rd4 Qd6 17. Bxg7 Rxg7 18. Qxh5 Qf4+ 19. Kb1 Bf5 20. fxe4 Bg4 21.
Nge2 Qd2 {0-1 (21) Mamedyarov,S (2724)-Kurnosov,I (2602) Moscow 2009}) 14. Qxh6
$14 Qd6 15. Qg5+ Ng6 $1 16. Qxh5 {[%csl Gh1][%cal Rh5h7]} Rf7 17. Nxe4 Qf4+ 18.
Kb1 Bf5 19. Nh3 Qe5 20. Nhg5 {[%mdl 64] Double Attack} Rg7 21. Ne6 (21. g3 $1
$16) 21... Na4 {[%csl Ga4][%cal Re5b2]} 22. Rd2 (22. Nd4 $5 {[%cal Rh5f5]} Rf8
23. Ka1 $11) 22... Nf4 $1 {[%cal Rf4h5]} 23. Nxf4 Qxf4 $40 {[%mdl 128] Black
mounts an attack.} 24. Rc2 Rf8 ({But not} 24... Bxe4 $6 25. fxe4 Kh8 26. e5 $16
) 25. Bd3 {g3 is the strong threat.} Nb6 $1 26. Nc5 (26. Ka1 $11) 26... Rg5 $15
27. Qh4 Qxh4 28. Rxh4 Bxd3 29. Nxd3 Nxd5 30. Nc5 {next Ne6 is good for White.}
Ne3 31. Ne6 Re5 ({Not} 31... Rxg2 $2 32. Rxg2+ Nxg2 33. Rg4+ Kf7 34. Nxf8 $18)
32. Nxf8 Nxc2 33. Kxc2 Kxf8 $17 {[%mdl 4096] Endgame KR-KR} 34. Kd3 Kg7 35. Rb4
b6 36. Ra4 a5 37. Rc4 c5 38. a4 h5 39. Rh4 Kg6 40. g4 hxg4 41. Rxg4+ Kf5 42.
Rh4 e6 {aiming for ...Rd5+.} 43. Rh8 Rd5+ 44. Kc3 Kf4 45. Re8 e5 (45... Ke5 {
seems wilder.} 46. f4+ Kd6 47. b3 Rh5 48. Rc8 Rh3+) 46. Rf8+ Ke3 {Threatens to
win with ...Rd3+.} 47. Rf5 Ke2 48. Kc2 $1 Rd2+ 49. Kb1 Rd5 50. Kc2 $1 Ke3 51.
Kc3 Rd3+ 52. Kc2 Rd2+ 53. Kc3 Rd5 54. Kc2 Ke2 55. b3 Rd2+ 56. Kc1 $1 Rd1+ (
56... Kd3 {looks sharper.} 57. Rxe5 Rh2 58. f4 Rf2 59. f5 Kc3) 57. Kb2 Rd5 ({
Black should try} 57... Rd6 $11) 58. Kc2 $1 Rd2+ 59. Kc1 $1 {[#]} Kd3 $1 60.
Rxe5 {Hoping for Rd5+.} Rf2 ({Black should play} 60... Rg2 $17) 61. Kb1 {[#]} (
61. Re6 $11) 61... Kc3 $1 {[%cal Rc3b3]} 62. Re3+ Kb4 63. Kc1 Ka3 64. Rc3 (64.
Rd3 $17) 64... Re2 65. Rd3 Kb4 66. Kb1 b5 (66... Rh2 $17 67. Kc1 Re2) 67. axb5
$11 {The position is equal.} Kxb5 68. Rc3 Rf2 69. Rc4 Rxf3 70. Kb2 Rd3 71. Rf4
Re3 {Weighted Error Value: White=0.10/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.30"]
[White "Antipov, Mikhail Al."]
[Black "Tabatabaei, M. Amin"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2619"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,115,22,33,35,42,20,34,24,27,21,35,22,31,2,0,3,33,31,17,-14,0,0,0,0,0,
0,0,0,0,0,5,0,10,-26,0,0,0,0,13,19,11,11,0,25,18,0,0,-19,-25,-20,-16,-19,-17,
-17,12,13,15,21,22,22,14,16,26,16,20,20,266,163,175,176,462,336,543,536,522,
514,1240,1099,2217,2112,1643,1167,4956,4827,2151,1628,2210,6447,6040,6061,
29981,29982,29982,29983,29985,29986,29988,29989,29989,29990,29991,29992]} 1. e4
c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 h5 9.
Nd5 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.}
Bxd5 10. exd5 Nbd7 11. Qd2 {White is slightly better.} g6 12. Be2 Qc7 13. c4 a5
14. Rc1 {is cutting edge theory.} a4 15. Na1 Qa5 16. Qxa5 Rxa5 {[#]} 17. Bd2 $5
$146 {[%mdl 8] New and interesting.} ({Predecessor:} 17. Bf2 Bh6 18. Rd1 O-O
19. Nc2 e4 20. Na3 exf3 21. gxf3 Re8 22. Nb5 Bf8 23. Bg3 {1/2-1/2 (55)
Moskalenko,A (2954)-Vykouk,J (2608) Chess.com INT 2020}) 17... Ra8 18. Bb4 Bh6
19. Rd1 Ke7 20. Nc2 Rac8 21. Kf2 h4 22. Na3 Nc5 23. Nb5 Nfd7 24. Ba5 Ra8 25.
Bb4 f5 26. Bd3 Rhc8 27. Bb1 Nb6 28. b3 axb3 29. axb3 Ra1 30. Bxc5 Rxc5 31. g4 {
[#]} Rxb5 $1 32. cxb5 Kf6 33. gxf5 gxf5 34. Rhg1 {With the idea Rg8.} Bf4 35.
Rg8 {Black must now prevent Rf8+.} Bxh2 36. Rf8+ Ke7 37. Rb8 Nxd5 {Strongly
threatening ...Bg3+.} 38. Rxb7+ ({Reject} 38. Rxd5 Rxb1 39. Ke2 (39. Rxb7+ Ke6
$17) 39... Ke6 $17) 38... Kf6 $1 {Hoping for ...Bg3+.} 39. b6 {aiming for Rd7.}
Bg3+ 40. Kg1 e4 $2 {A mistake that costs the game.} 41. fxe4 (41. Rxd5 Rxb1+
42. Kg2 Rb2+ 43. Kh1 exf3 44. Rd1 Rh2+ 45. Kg1 f2+ 46. Kf1 Rh1+ 47. Ke2 Rxd1
48. Kxd1 f1=Q+ 49. Kc2 Qg2+ 50. Kc1 Bf4+ 51. Kb1 Be5 52. Rf7+ Kxf7 53. Kc1 Qb2+
54. Kd1 Bc3 55. b7 Qd2#) 41... Nc3 {[#]} 42. Rf1 {Threatens to win with Rc7.}
h3 $2 (42... Rxb1 43. Rxb1 Nxb1) 43. Bd3 Ra2 (43... Rxf1+ 44. Bxf1 h2+ 45. Kg2
Be5) 44. Rxf5+ $18 Ke6 {[#]} 45. Rh7 $1 {[%cal Rh7h3]} Rg2+ (45... h2+ $142 46.
Kh1 Ra1+ 47. Rf1 Rxf1+ 48. Bxf1 Nxe4 49. Rxh2 d5 50. Rh6+ Ke7) 46. Kf1 Rh2 47.
Bc4+ d5 48. Bxd5+ Kd6 49. Rh6+ Kc5 50. Rc6+ Kb4 {[#]} 51. Rxc3 $1 Rh1+ 52. Ke2
Kxc3 {[%mdl 4096] Endgame KRB-KRB} 53. Rf3+ {[%mdl 64] Double Attack. White
mates.} Kd4 54. Rxg3 h2 55. Rh3 Rc1 56. b7 Rc2+ 57. Kd1 Rc3 58. Rxh2 {Weighted
Error Value: White=0.12/Black=0.36} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.31"]
[White "Erigaisi Arjun"]
[Black "Kuybokarov, Temur"]
[Result "1/2-1/2"]
[ECO "C27"]
[WhiteElo "2634"]
[BlackElo "2549"]
[Annotator "TA"]
[PlyCount "244"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,243,-2,-2,0,0,-12,-5,-2,0,-19,-19,-38,-7,-47,-40,-56,-46,-49,-7,-31,
-32,-38,-22,-28,-10,-8,-3,-8,-9,-12,13,14,14,0,0,0,0,-14,-13,-16,-12,-20,-10,
-16,-14,-22,-7,-12,-12,-12,-8,-16,-8,-18,-18,-14,-15,-16,-13,-31,0,-31,-6,-30,
-29,-30,-30,-47,-28,-43,-43,-43,-36,-61,-46,-46,-46,-46,-46,-54,-54,-55,-56,
-56,-56,-56,-56,-57,-55,-60,-54,-74,-75,-141,-112,-174,-174,-165,-172,-281,
-293,-277,-48,-277,-291,-273,-262,-288,-283,-279,-266,-275,-273,-239,-235,-220,
-192,-197,-192,-317,-317,-361,-361,-361,-219,-227,-204,-204,-197,-361,-361,
-361,-204,-350,-361,-361,-350,-339,-212,-212,-212,-212,-212,-212,-162,-162,
-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,
-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,-162,
-162,-161,-147,-147,-85,-162,-162,-162,-162,-162,-147,-147,-147,-147,-146,-146,
-82,-82,-81,-146,-146,-146,-146,-146,-146,-146,-131,-139,-131,-117,-85,-85,-40,
-85,-85,-85,-51,-51,-51,-51,-51,-111,-85,-85,-85,-85,-64,-85,-51,-77,-77,-130,
-85,-85,-8,-8,-8,-8,-8,-8]} 1. e4 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 c6 5. Nf3 d6
6. a3 {C27: Vienna Game: 2...Nf6 3 Bc4 Nxe4.} Bb6 7. h3 Nbd7 {[%cal Bb8d7,
Bd7e5,Be5g6][%mdl 32]} 8. O-O h6 {[#]} 9. d4 $146 ({Predecessor:} 9. Be3 O-O
10. Bxb6 axb6 11. Ne2 b5 12. Ba2 Re8 13. Ng3 Nf8 14. c3 N6h7 15. d4 {0-1 (28)
Skliarov,V (2353)-Horton,A (2397) Katowice 2017}) 9... exd4 10. Nxd4 O-O (10...
Ne5 $5 {[%cal Re5c4]} 11. Be2 O-O $11) 11. Nb3 Ne5 12. Be2 Re8 13. Bf4 Ng6 14.
Bxd6 Nxe4 15. Nxe4 Rxe4 16. Bd3 Re8 17. Bxg6 fxg6 18. c4 Qg5 19. Qc1 Be6 20.
Qxg5 hxg5 21. c5 Bd8 22. Nd4 Bd5 23. Nc2 Bf6 24. Ne3 Bb3 ({Much worse is} 24...
Bxb2 25. Rab1 $16) 25. Rfe1 Re6 ({Of course not} 25... Bxb2 26. Rab1 $14) 26.
Re2 Rd8 27. Rc1 Bd4 28. Rce1 Rde8 29. Rd2 Re4 30. Rd3 Ba4 31. Rb1 Bb5 32. Rd2
Bxe3 33. fxe3 Rxe3 34. Rc1 a5 35. Rf2 a4 36. Rcc2 R3e4 37. Kh2 Bc4 38. Rc3 Bd5
39. Rd3 Kh7 40. Rdd2 g4 41. hxg4 Rxg4 42. Rf4 Re4 43. Rxg4 Rxg4 $15 {[%mdl
4096] Endgame KRB-KRB} 44. Re2 g5 45. Be5 Rc4 46. Bc3 Rxc5 47. Re7 b5 {[%cal
Bb7b5,Bb5b4][%mdl 32]} 48. Rxg7+ Kh6 49. Re7 Rc4 50. Kg3 Kh5 51. Rh7+ Kg6 52.
Re7 (52. Rh8 $17 {was necessary.}) 52... b4 $1 $19 {[%cal Rb4c3]} 53. Bxb4 Rc2
{[%csl LRb2,LRg2]} 54. Bc3 (54. Kh3 $142) 54... Rxg2+ 55. Kh3 g4+ 56. Kh4 Kf5
57. Be5 Be6 $1 58. Bg3 Rxb2 59. Rg7 Kf6 {White must now prevent ...Rb1.} 60.
Rg5 Bf5 61. Rh5 Rb3 62. Rh6+ Bg6 63. Kxg4 Rxa3 64. Rh1 (64. Rh8 {was worth a
try.}) 64... Rc3 65. Ra1 Bc2 66. Be1 Re3 67. Rc1 Re4+ 68. Kf3 Rc4 69. Ra1 $2 (
69. Ke2) 69... Ke5 70. Ke3 Kd5 (70... Bb3 $142 71. Bd2 Rh4 72. Bc3+ Kd5) 71.
Kd2 (71. Rc1 $142) 71... Bb3 72. Rc1 Rg4 73. Kc3 c5 74. Kb2 Rg2+ 75. Ka1 Bc2
76. Kb2 Bd3+ 77. Ka3 {[#]} Bc4 $1 {[%csl Gc4][%cal Rg2a2]} 78. Ra1 Bb3 79. Bc3
Kc4 80. Be5 Kb5 81. Bb2 Rg3 82. Rc1 Bd5+ 83. Rc3 Rg2 84. Rd3 Bg8 85. Rc3 Rg4
86. Re3 Bc4 87. Rc3 Bb3 88. Re3 Rh4 89. Rc3 Rh2 90. Re3 Bd5 91. Rd3 Be4 92. Re3
Bb1 93. Rg3 Rd2 94. Re3 Bd3 (94... Rf2 $142 95. Rc3 Be4) 95. Rh3 (95. Bc3 $17 {
was called for.} Rc2 96. Rxd3) 95... Be4 96. Re3 Bd5 97. Rg3 Be6 98. Re3 Rd6
99. Be5 Rb6 100. Bb2 Kc4 (100... Bd5 $142 101. Rd3 Bc4) 101. Rc3+ $17 Kd5 102.
Rd3+ {[#]} ({White should play} 102. Bc1) 102... Kc6 $1 103. Re3 Bd5 104. Rh3 {
intending Rh6+.} Rb4 105. Re3 Be4 106. Rc3 Rb7 107. Re3 Kd5 108. Rh3 Bf5 109.
Rf3 Bg6 110. Rg3 Rb6 111. Rg5+ Kc4 {And now ...Rb3+ would win.} 112. Rg4+ Kb5 {
...Rd6 is the strong threat.} 113. Rg3 (113. Rxa4 $15 Re6 114. Ra7) 113... Be4
114. Re3 Bb1 115. Re1 Bd3 {Threatens to win with ...Bc2.} 116. Rh1 Ka6 {
Strongly threatening ...Rb3+.} 117. Rc1 Rb3+ 118. Ka2 (118. Kxa4 $142 Rxb2 119.
Rxc5) 118... Kb5 119. Rc3 Kb4 ({Black should try} 119... Rxc3 $17 120. Bxc3 Kc4
) 120. Rxb3+ $11 {The position is equal.} axb3+ 121. Ka1 c4 {Hoping for ...Be2.
} 122. Bc3+ Kxc3 {White happily takes the draw.  Weighted Error Value: White=0.
11/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.32"]
[White "Ponomariov, Ruslan"]
[Black "Indjic, Aleksandar"]
[Result "1/2-1/2"]
[ECO "C64"]
[WhiteElo "2631"]
[BlackElo "2612"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,80,47,50,35,37,35,33,43,20,33,24,25,16,32,23,27,0,0,0,0,0,0,-12,20,
-18,-25,-14,-7,-27,-14,-14,-14,-14,-17,-16,-16,-16,-16,-18,-14,-19,-6,-39,0,0,
0,0,0,-8,0,-10,0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-15,0,0,0,-8,0,0,0]} 1. e4 e5 2.
Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5 5. c3 Nge7 6. O-O Ng6 {C64: Ruy Lopez: Classical
Defence (3...Bc5) except 4 0-0 Nf6.} 7. d4 Ba7 8. Re1 O-O {White is slightly
better.} 9. h3 d6 {[#]} 10. Be3 $146 ({Predecessor:} 10. d5 Nce7 11. g4 Kh8 12.
c4 Ng8 13. Nc3 Nh4 14. Nxh4 Qxh4 15. Qf3 h5 16. gxh5 Bxh3 {0-1 (55) Csalami,G 
(1706)-Strenner,Z (2065) Budapest 2014}) 10... h6 11. Nbd2 exd4 12. cxd4 Nce7
13. d5 Bxe3 14. Rxe3 f5 15. Rc1 Nf4 16. Bb3 Kh8 17. Qc2 fxe4 18. Qxe4 Neg6 19.
Nd4 c6 20. N2f3 c5 21. Ne6 Bxe6 22. dxe6 {[#] Threatens to win with e7.} d5 23.
e7 $1 {[%cal Re7d8]} dxe4 24. exd8=Q Raxd8 25. Rxe4 Nd3 26. Rc3 b5 27. Bc2 {
The position is equal.} Ngf4 28. Bxd3 Nxd3 29. b3 Rd5 30. Re3 Rfd8 31. g3 Nb4
32. a3 Rd1+ 33. Re1 R1d3 34. Re3 ({Of course not} 34. Rxc5 Rxf3 35. axb4 Rd2
$11) 34... Rxc3 35. Rxc3 $11 {[%mdl 4096] Endgame KRN-KRN} Rd1+ 36. Kg2 Nd3 37.
Rc2 Rb1 38. Rc3 Rd1 39. Rc2 Ra1 40. Rc3 c4 {Weighted Error Value: White=0.05/
Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.33"]
[White "Sadhwani, Raunak"]
[Black "Dreev, Aleksey"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2609"]
[BlackElo "2635"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,107,11,6,2,10,12,11,9,6,6,11,11,5,4,6,0,0,0,11,11,10,12,17,8,11,11,17,
14,23,7,28,18,52,62,55,58,64,28,49,52,54,52,51,41,53,64,56,18,21,27,58,30,40,
26,29,30,55,0,0,-7,-10,-6,-8,-51,0,0,0,0,0,0,60,0,52,8,8,8,68,51,287,201,202,
202,184,195,413,401,5206,5197,5197,5197,5081,875,29980,29981,29981,29982,29981,
29982,29986,29987]} 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Qa4+ Bd7 6.
Qxc4 {A13: English Opening: 1...e6.} c5 7. Ne5 Qc8 8. Qd3 $1 {The position is
equal. 8.Qd3 is better than 8.0-0.} Nc6 9. Nxd7 Nxd7 10. Nc3 Be7 11. b3 O-O 12.
O-O Rd8 13. Rd1 Nf6 {[#]} 14. Qc2 $146 ({Predecessor:} 14. Qb1 Qd7 15. Bb2 Rac8
16. e3 b6 17. h3 Nd5 18. Ne2 Qc7 19. a3 Bf6 20. Bxf6 Nxf6 {1/2-1/2 (42) Almasi,
Z (2702)-Keinanen,T (2402) Batumi 2018}) 14... Nd4 15. Qb1 Qd7 16. Bb2 Rac8 17.
e3 Nc6 18. d3 Nd5 19. Ne4 f5 20. Nc3 Bf6 21. Nxd5 Bxb2 22. Qxb2 {[#] Threatens
to win with Nf4.} exd5 23. a3 (23. Rac1 $5 {[%cal Rc1c5]}) 23... a5 24. Rac1
Qd6 25. d4 cxd4 26. exd4 Ne7 27. Rxc8 Rxc8 28. Qe2 Kf7 29. Re1 g6 30. h4 h5 31.
Qb5 b6 32. Re5 {[%cal Rg2d5]} Rd8 33. Qe2 (33. Qa6 $14) 33... Qxa3 $11 34. Re6
{Hoping for Qe5.} Qc1+ 35. Kh2 $132 {[%mdl 2048] White is not holding back} Qc7
({Don't play} 35... Nc6 $6 36. Re3 $16) 36. Bf3 f4 (36... Ng8 $1 $15) 37. g4
hxg4 38. Bxg4 Rh8 39. Kh3 Rh7 ({Black should try} 39... Qc3+ $11 40. f3 Qc7)
40. Re5 (40. Qe5 $1 $14 Qxe5 41. dxe5) 40... Qd8 (40... Kf8 $11) 41. Qf3 Nf5 $1
{[%mdl 64] [#] Double Attack} 42. h5 Kf8 (42... Qg5 $11) 43. Rxd5 $14 Qh4+ {
This move loses the game for Black.} (43... Qg5 $14) 44. Kg2 $18 Qg5 45. Kf1 {
aiming for hxg6.} Rf7 ({Avoid the trap} 45... Rc7 $2 46. hxg6 Nh4 47. Rxg5 $18)
46. hxg6 Qxg6 47. Bh5 Ne3+ (47... Nh4 $142 48. Rd8+ Kg7) 48. fxe3 Qd3+ 49. Kg2
Rg7+ 50. Bg4 {White wants to mate with Rd8+.} Rxg4+ 51. Qxg4 {White mates.}
Qd2+ 52. Kh3 Qxe3+ 53. Kh4 Qe1+ 54. Kg5 {Weighted Error Value: White=0.09/
Black=0.34} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.34"]
[White "Svidler, Peter"]
[Black "Onyshchuk, Volodymyr"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2694"]
[BlackElo "2622"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,93,18,20,14,23,17,17,22,14,16,9,41,28,41,39,30,0,0,0,-13,-13,25,28,
40,27,41,43,56,6,14,0,0,0,79,72,135,124,171,171,143,58,29,0,0,0,0,0,0,0,77,41,
156,120,229,232,253,237,468,470,495,502,509,496,474,506,494,506,471,504,507,
506,560,560,512,541,717,712,685,474,644,459,591,578,2120,1792]} 1. e4 c6 2. d4
d5 3. e5 Bf5 4. Nd2 e6 5. Nb3 Nd7 6. Nf3 h6 {B12: Caro-Kann: Advance Variation.
} 7. Be2 Ne7 8. O-O g5 {The position is equal.} 9. Bd2 {9.a4 is the modern
continuation.} Bg7 10. a4 O-O 11. Bb4 f6 12. exf6 Rxf6 {[#]} 13. Bd6 $146 ({
Predecessor:} 13. a5 Ng6 14. Bd6 Bf8 15. Bg3 Rf7 16. Re1 g4 17. Nfd2 h5 18. f3
Qg5 19. fxg4 hxg4 {0-1 (42) Arenas Vanegas,D (2455)-Henriquez Villagra,C (2608)
Chess.com INT 2021}) 13... Rf7 14. Re1 Ng6 15. Bd3 Qf6 16. Ne5 Ngxe5 17. dxe5
Qg6 18. a5 {[%cal Ba4a5,Ba5a6][%mdl 32]} Bxd3 19. cxd3 Bf8 20. a6 b6 21. Nd4
Bxd6 (21... Nc5 $11) 22. exd6 $16 Qf6 (22... e5 $142 23. Nxc6 Qxd6) 23. Nxc6
Qxf2+ 24. Kh1 Qxb2 {[#]} 25. Rxe6 ({White should try} 25. d4 $1 $16 {Strongly
threatening Qd3.} Qb5 26. Rc1) 25... Nc5 $14 {[%cal Rc5e6]} 26. Re2 (26. Re1 {
feels hotter.} Raf8 27. Ne5 Ne4 28. dxe4 Qxe5 29. Qxd5 Qxd5 30. exd5 Rf6 31.
Rac1) 26... Qf6 27. Ne5 Rff8 28. Rc1 d4 29. d7 Rad8 (29... Qd6 $1 $11) 30. h3
Nxd7 {Black is now going downhill.} (30... Qd6 $1 $14) 31. Ng4 $36 {[%mdl 2048]
Keeping Black busy.} Qf4 (31... Qg6 $16) 32. Re4 $18 {[%mdl 1024] White has
strong compensation.} Qd6 {[#] White should prevent ...Nc5.} 33. Qb3+ $1 Kh8 $2
(33... Kg7) 34. Re6 {[%mdl 64] Double Attack. White is clearly winning.} Qf4
35. Rce1 ({Not} 35. Rxh6+ Kg7 $11) 35... Nf6 36. Ne5 Qf5 37. Re7 Nd5 38. Rxa7
g4 39. Nxg4 Rde8 40. Rg1 h5 41. Nh6 Qe6 {[#] If Black can now play ...Rd8 this
consolidates a bit.} 42. Qc4 $1 Nf4 (42... Ne3 43. Qxd4+) 43. Qxd4+ Qf6 44.
Qxf6+ Rxf6 {[#]} 45. Rb7 $1 {Hoping for a7.} Ra8 {[#]} (45... Rxh6 46. a7) 46.
a7 Nxd3 (46... Rxa7 47. Rxa7) 47. Nf7+ {Weighted Error Value: White=0.11/
Black=0.30} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.35"]
[White "Kravtsiv, Martyn"]
[Black "Van Foreest, Jorden"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2625"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "52"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,52,29,52,45,112,32,40,44,81,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,-36,-46,
-107,-104,-102,-109,-127,-115,-148,-123,-154,-153,-214,-208,-212,-198,-281,
-286]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 Qb6 7. Nc3 Nc6 8.
O-O {B12: Caro-Kann: Advance Variation.} Qxb2 (8... c4 $14) 9. Qe1 {9.Qe1 is
better than 9.Nb5.} (9. Nb5 $16) 9... c4 {[#] aiming for ...Bb4.} 10. Rb1 {
White is slightly better.} Qa3 $5 {[%mdl 4] [#] An interesting side line.} 11.
Rxb7 $146 (11. Nb5 $16 Qa4 12. Nc7+ {[%mdl 64] Double Attack, Discovered Attack
} Kd8 13. Nxa8) ({Predecessor:} 11. Nb5 Qa4 12. Nc7+ Kd7 13. Nxa8 b5 14. c3 Ba3
15. Bc1 Be7 16. Rb2 Nh6 17. Bd1 {1-0 (57) Anand,V (2753)-Xiong,J (2700) Chess.
com INT 2021}) 11... Bb4 $11 12. Nb5 Bxe1 13. Nxa3 Nd8 $36 {[%mdl 2048] And
now ...Bxf2+! would win. Black has the initiative.} 14. Rb1 $1 Ba5 15. Nh4 Be4
16. f3 Bg6 17. f4 {f5 is the strong threat.} Be4 18. f5 {Hoping for Nb5.} Ne7 {
[%cal Re6f5]} 19. f6 ({White should try} 19. fxe6 $15 Nxe6 20. Nb5) 19... gxf6
$17 20. Rxf6 a6 21. Bf3 Bxf3 22. Rxf3 Nec6 23. Bf2 Bb4 24. Rb2 {[#]} (24. g3
$17) 24... c3 $1 $19 {[%cal Rc3b2]} 25. Rb3 Rb8 26. Rd3 (26. Nb1 $142 Na5 27.
Re3) 26... Bxa3 {Weighted Error Value: White=0.33/Black=0.08} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.36"]
[White "Sethuraman, S.P.."]
[Black "Matlakov, Maxim"]
[Result "1/2-1/2"]
[ECO "C90"]
[WhiteElo "2620"]
[BlackElo "2682"]
[Annotator "TA"]
[PlyCount "281"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,281,19,17,35,19,31,28,43,32,26,28,39,31,63,67,45,67,52,-25,-17,-26,
-6,-12,-15,2,0,-66,-31,-37,-38,-25,-37,-64,-25,-62,0,0,33,0,0,0,0,0,0,0,0,0,0,
-5,0,-51,-51,-57,-50,-56,0,-52,0,-44,-41,-54,-53,-86,-86,-86,-86,-86,-86,-91,
-93,-156,-70,-70,-70,-70,-70,-70,-70,-70,-65,-72,-71,-78,-65,-84,-84,-86,-70,
-86,-71,-71,-71,-86,-70,-78,-65,-65,-65,-124,-65,-73,-67,-86,0,-77,-71,-71,-71,
-79,-77,-77,-77,-86,-77,-78,-78,-79,-79,-86,-71,-86,-86,-86,-86,-86,-86,-87,
-87,-87,-87,-87,-66,-72,-73,-72,-74,-95,-66,-66,-66,-66,-38,-66,-65,-66,-65,
-66,-66,-66,-66,-66,-66,-66,-66,-73,-8,-8,-8,-45,-12,-31,-30,-38,-29,-45,-45,
-45,-7,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,
-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,
-8,-8,-40,-77,-77,-8,-8,-8,-8,0,0,0,0,0,0,0,0,0,-8,0,0,0,0,0,0,0,-8,0,-8,0,-8,
0,0,0,-8,0,0,0,0,0,-8,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6
6. c3 Be7 7. O-O O-O 8. Re1 Re8 9. Nbd2 Bf8 10. Nf1 h6 11. Ng3 b5 12. Bb3 Ne7 {
C90: Closed Ruy Lopez with 7...d6: Early deviations.} 13. a4 Bd7 {[#]} 14. Nh4
$146 ({Predecessor:} 14. d4 exd4 15. cxd4 Ng6 16. h3 Bc6 17. Qc2 Bb7 18. d5 Ne5
19. Nd4 Qd7 20. f4 {1-0 (34) Tschernatsch,J (2132)-Hecht,J (1775) Wuerzburg
2019}) 14... c5 {White has an edge.} 15. h3 Qc7 16. Qf3 {Threatens to win with
Nh5.} c4 17. Bc2 Nh7 18. dxc4 bxc4 19. b4 g6 20. Nf1 (20. Be3 $14) 20... Bg7
$11 21. Ne3 Nf6 22. Ng4 Bxg4 23. hxg4 d5 24. Be3 (24. Bxh6 $11 Bxh6 25. Qxf6)
24... d4 (24... Rad8 {is more complex.} 25. Rad1 d4 26. cxd4 Nc6 27. g5 hxg5
28. Bxg5 Nxd4 29. Qc3 Rb8) 25. cxd4 exd4 26. Bxd4 {[#]} Nxg4 {[%mdl 64]
Discovered Attack} 27. Qxg4 Bxd4 28. Rad1 {[#]} Rad8 (28... h5 $1 $15 29. Qg5
Nc6) 29. e5 Bc3 30. Rxd8 Rxd8 31. Re4 Bxe5 32. Rxc4 Qd6 33. g3 h5 34. Qf3 Kg7
35. Bb3 Bf6 36. b5 (36. Qe4 $11) 36... axb5 $15 37. axb5 Rb8 $36 {[%mdl 2048]
Black has some pressure.} 38. Ba4 Rd8 39. Bb3 Rb8 40. Ba4 $1 Qd5 41. Qxd5 Nxd5
42. Nf3 Nb6 43. Re4 Nxa4 44. Rxa4 Rxb5 $17 {[%mdl 4096] Endgame KRB-KRN} 45. g4
h4 46. Kg2 {[#]} (46. g5 $142 Bxg5 47. Nxh4) 46... Rb3 (46... g5 $1 $17 47. Nd4
Bxd4 48. Rxd4 Rb3) 47. g5 $1 $15 {[%cal Rg5f6]} h3+ $1 48. Kxh3 Bxg5 49. Kg2
Bd8 50. Nd2 Rd3 (50... Rb2 {with more complications.} 51. Nc4 Re2 52. Kf3 Re6
53. Ne3 Re5) 51. Nf3 Bb6 52. Rb4 Rd6 (52... Bc5 {with more complications.} 53.
Rb5 Rd5 54. Ne1 Rg5+ 55. Kf1 Kf6) 53. Ra4 Rd5 54. Rb4 Ba5 55. Re4 Bc3 56. Rc4
Bf6 57. Kf1 Rb5 58. Kg2 Bd8 59. Nd4 Rb2 60. Rc2 ({White should try} 60. Kg3 $15
) 60... Rb1 (60... Rxc2 $17 61. Nxc2 g5) 61. Rc8 Ba5 (61... Bb6 {is more
complex.} 62. Nc2 Kf6 63. Rc3 Kg5 64. Ne3 Ba7) 62. Rc5 Bd8 (62... Bb6 {feels
hotter.} 63. Rc4 Rb2 64. Kf3 Kf6 65. Nc2 Kg5) 63. Rc8 $1 {[%cal Rc8d8]} Bf6 (
63... Bb6 {is more complex.} 64. Ne2 Rb4 65. Rc6 Rb2 66. Kf1 Kf8) 64. Rc4 Rb2
65. Kf1 Bd8 66. Ne2 Bb6 67. Rc8 Ba7 68. Rc7 Bb8 69. Rc4 Kh6 70. Rc5 f6 71. Rc4
g5 72. Rc6 Kg6 73. Ng3 Ba7 74. Ne4 Kf5 75. Ng3+ Ke5 76. Ne2 f5 77. Rc7 {
Black must now prevent Re7+.} Bb6 78. Re7+ Kf6 79. Re8 f4 {And now ...Rb3
would win.} 80. Rf8+ Ke5 {aiming for ...Ke4.} 81. f3 Be3 82. Re8+ Kf6 83. Ra8
Kg6 84. Rg8+ Kh6 85. Rh8+ Kg7 86. Re8 $1 Kf7 87. Re5 Kf6 88. Re8 g4 (88... Rd2
$17 89. Rf8+ Kg7) 89. Nxf4 $11 Bxf4 90. fxg4 {KRB-KR} (90. Rf8+ {feels hotter.}
Ke5 91. Re8+ Kf5 92. fxg4+ Kg6 93. g5) 90... Kg5 91. Re2 (91. Rg8+ {seems
wilder.} Kh4 92. Rd8 Bg5 93. Rd3 Rc2 94. Rf3) 91... Rb1+ 92. Re1 Rb3 93. Re2
Be3 94. Rc2 Kxg4 (94... Rb8 {seems wilder.} 95. Kg2 Bd4 96. Rc7 Rd8 97. Kf3
Rf8+) 95. Kg2 Bd4 96. Kf1 Kf4 97. Ke2 Ke4 98. Kf1 Rb8 (98... Rh3 {with more
complications.} 99. Re2+ Kd3 100. Ra2 Rh1+ 101. Kg2 Rg1+) 99. Ke2 (99. Rd2 {
seems wilder.} Be3 100. Rd6 Rb2 101. Rd7 Rf2+ 102. Ke1) 99... Rh8 100. Rd2 Bc3
(100... Be5 {keeps more tension.} 101. Kd1 Bf4 102. Rd7 Rc8 103. Ke2 Rc2+) 101.
Rc2 Rh3 102. Kf1 Bd4 103. Ke2 (103. Re2+ {is more complex.} Kd3 104. Ra2 Rh1+
105. Kg2 Rg1+ 106. Kf3) 103... Rh1 104. Rd2 Rh6 (104... Ba1 {keeps more
tension.} 105. Rd7 Rh2+ 106. Kf1 Bd4 107. Rb7 Rf2+) 105. Rc2 Rh7 106. Rd2 Bc3
107. Rc2 Kd4 108. Kf1 Kd3 109. Rg2 (109. Ra2 {is interesting.} Be5 110. Ra8
Rf7+ 111. Kg2 Ke3 112. Ra3+) 109... Be5 110. Rf2 Rh3 111. Rf8 Ke3 {...Bf4 is
the strong threat.} 112. Kg2 Rg3+ 113. Kf1 Bd4 114. Ra8 Bc5 115. Rd8 (115. Rc8
{with more complications.} Rg5 116. Rb8 Kf3 117. Ke1 Rd5 118. Rb3+) 115... Rg7
116. Rb8 Kf3 {[%csl Gc5][%cal Rg7g1]} 117. Ke1 $1 Be3 {[%cal Rg7g1]} 118. Kd1
$1 Rc7 {[%csl Ge3][%cal Rc7c1]} 119. Rb1 $1 Rc3 120. Ra1 $1 Rc8 (120... Kf2 {
with more complications.} 121. Ra2+ Kf1 122. Ra1 Rc6 123. Rb1 Rc5) 121. Rb1 $1
Rc7 (121... Rc4 {seems wilder.} 122. Ke1 Rc2 123. Kd1 Rc6 124. Ke1 Rc4) 122.
Ra1 Ke4 (122... Rc4 $17) 123. Ra4+ {The position is equal.} Bd4 124. Ra2 Bc3
125. Ke2 (125. Rg2 {is more complex.} Rd7+ 126. Kc1 Rc7 127. Rg4+ Kd5 128. Rg8)
125... Bb4 (125... Kf4 {keeps more tension.} 126. Kd3 Be5 127. Ra4+ Kf5 128.
Ra8 Rc3+) 126. Rb2 Rc4 127. Ra2 Rc3 128. Rb2 Bc5 129. Rd2 (129. Kd1 {is
interesting.} Bd4 130. Rg2 Kd3 131. Rd2+ Ke3 132. Re2+) 129... Bb4 130. Rb2
Re3+ 131. Kf2 Rf3+ (131... Be1+ {looks sharper.} 132. Kf1 Kd5 133. Rc2 Bb4 134.
Rc8 Rb3) 132. Ke2 Bc3 (132... Ba3 {feels hotter.} 133. Rc2 Rh3 134. Rc4+ Kf5
135. Rc8 Kg6) 133. Ra2 (133. Rb1 {seems wilder.} Re3+ 134. Kf2 Rd3 135. Kg2
Rd2+ 136. Kh3) 133... Rh3 134. Rc2 (134. Kf1 {keeps more tension.} Kd3 135. Ra8
Rh2 136. Rd8+ Kc4 137. Rc8+) 134... Kd4 135. Kd1 (135. Rc1 {with more
complications.} Bb2 136. Rd1+ Ke5 137. Rd8 Kf6 138. Rc8) 135... Kc4 136. Rg2
Re3 137. Re2 Rd3+ 138. Kc2 Rd8 139. Rg2 Ra8 {( -> ...Ra2+)} 140. Kd1 Re8 141.
Kc2 {Weighted Error Value: White=0.13/Black=0.14} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.37"]
[White "Henriquez Villagra, Cristobal"]
[Black "Cheparinov, Ivan"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2608"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,75,10,14,0,8,6,43,14,21,10,12,6,11,0,18,15,21,18,8,8,27,14,17,21,29,
29,28,30,39,33,36,37,45,35,72,20,22,15,18,0,0,0,56,0,0,-5,-15,0,0,0,402,104,
355,339,426,145,29977,29978,29974,29976,29975,-967,29976,29977,5418,5418]} 1.
d4 Nf6 2. Bf4 d5 3. Nf3 c5 4. e3 Nc6 5. Nbd2 Bg4 6. c3 e6 7. Qa4 {D02: 1 d4 d5
2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Bxf3 8. Nxf3 Nd7 {
[#]} 9. Rd1 $146 {White is slightly better.} ({Predecessor:} 9. Ne5 Ndxe5 10.
Bxe5 a6 11. dxc5 f6 12. Bg3 Bxc5 13. Bd3 O-O 14. O-O Bd6 15. e4 Bxg3 16. hxg3 {
0-1 (35) Csonka,B (2490)-Demidov,M (2551) Chess.com INT 2021}) 9... a6 10. Qc2
Rc8 11. Qb1 Nf6 12. Bd3 Bd6 13. dxc5 Bxc5 14. O-O Bd6 15. Bg5 h6 16. Bxf6 Qxf6
17. e4 dxe4 18. Bxe4 Qe7 19. Qd3 Bb8 20. g3 Na5 21. Qe2 O-O 22. Bd3 b5 23. h4 (
{Better is} 23. a4 $16) 23... Nc4 24. Rfe1 Rfd8 25. h5 Qc5 26. Nd4 Ne5 (26...
Qg5 $1 $11) 27. Bb1 (27. Bc2 $1 $14) 27... b4 $11 28. Qe4 {Hoping for Qh7+.} (
28. Qxa6 bxc3 29. bxc3 Qxc3 $17) 28... bxc3 29. bxc3 Qxc3 {Threatens to win
with ...Rxd4!} 30. Kg2 {And now Qh7+ would win.} Qc4 $2 {[%mdl 8192]} (30...
Kf8 $11) 31. Qh7+ $18 Kf8 32. Re4 Qc3 {[#] intending ...Ba7.} 33. Nxe6+ $1 $40
{[%mdl 640] Black is in trouble.} fxe6 $4 {[%mdl 8192]} (33... Ke7 $16 34. Nd4
(34. Rxd8 {is a self mate.} Qf3+ {[%mdl 64] Double Attack} 35. Kf1 Rc1+ {
[%mdl 64] Double Attack} 36. Rd1 Rxd1+ 37. Re1 Qh1+ 38. Ke2 Qxe1#) 34... Rxd4
35. Rexd4 (35. Rdxd4 Qf3+ {[%mdl 64] Double Attack} 36. Kh2 Qxf2+ 37. Kh3 Rc1
38. Rd7+ Ke8 39. Rd8+ {[%mdl 64] Decoy} Kxd8 40. Rd4+ Qxd4 41. Qe4 Qd7+ 42. Kg2
Qd1 43. Kh2 Nf3+ 44. Kh3 Ng5+ {[%mdl 64] Double Attack, Discovered Attack} 45.
Kh4 Nxe4 46. Bxe4 Qe1 {[%mdl 64] Double Attack} 47. Kg4 Qxg3+ 48. Kf5 Qh3#)
35... Qf3+ 36. Kg1 Ba7) 34. Rf4+ Nf7 35. Rxd8+ Rxd8 36. Qh8+ $1 Ke7 {[#]} 37.
Rxf7+ {[%mdl 576] Remove Defender, Deflection} Kxf7 38. Qxd8 {[%csl Gh5][%cal
Rb1g6] Weighted Error Value: White=0.25/Black=0.50} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.38"]
[White "Ivic, Velimir"]
[Black "Rakhmanov, Aleksandr"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2606"]
[BlackElo "2657"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,65,7,0,0,0,0,0,0,0,13,10,26,30,27,24,38,13,27,13,12,10,9,9,14,0,31,
18,13,0,0,0,0,0,0,0,11,4,16,12,52,18,16,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3
Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nc3 Nxc3 7. bxc3 Nxe5 8. dxe5 Bc5 {
C43: Petroff Defence: 3 d4.} 9. O-O $1 {The main line 9.0-0 scores better than
9.Qh5.} O-O 10. Qh5 {[%csl Gd3][%cal Rh5h7]} g6 $1 {[%cal Rg6h5]} 11. Qh6 Re8
12. Bg5 Bf8 13. Bxd8 Bxh6 14. Bxc7 Bf5 {[#]} 15. Bxf5 $146 ({Predecessor:} 15.
Rab1 Bxd3 16. cxd3 Rac8 17. Bd6 b6 18. Rb5 Rxc3 19. Rxd5 Rd8 20. f4 Bf8 21. Kf2
{1/2-1/2 (66) Vachier Lagrave,M (2751)-Dominguez Perez,L (2758) Chess24.com
INT 2021}) 15... gxf5 16. Rad1 Rac8 17. Bd6 Rxc3 18. Rxd5 Rxc2 19. a4 (19. a3 {
is more complex.} b6 20. Rfd1 Bc1 21. g3 Bb2 22. a4) 19... Rd2 (19... Ra2 {
feels hotter.} 20. Ra5 a6 21. g3 Rc8 22. Rb1 Be3) 20. Rxd2 Bxd2 $14 {[%mdl
4096] Endgame KRB-KRB} 21. Rd1 Bc3 22. f4 f6 23. Rc1 Bd4+ 24. Kf1 fxe5 25. fxe5
b6 ({Wrong is} 25... Bxe5 $2 26. Re1 $1 $18) 26. Rd1 Be3 ({Don't blunder} 26...
Bxe5 $2 {[#]} 27. Re1 $1 $18) 27. Ke2 (27. Rd3 $5 {[%cal Rd3e3]} Bh6 28. Rf3
$14) 27... Bh6 {The position is equal.} 28. Kd3 Bg7 29. Re1 Bf8 {Threatens to
win with ...Bxd6.} 30. Rf1 {Black must now prevent Kd4.} Bxd6 31. exd6 {
And now Kd4 would win.} Rd8 32. Rxf5 Rxd6+ 33. Ke3 {A rather calm draw. 
Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.39"]
[White "Kovalev, Vladislav"]
[Black "Sindarov, Javokhir"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2634"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,112,-7,-20,-24,-24,-35,-24,-37,-22,-44,-36,-36,-39,-56,-22,-38,0,0,0,
0,31,23,26,14,34,34,41,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-175,-71,-66,0,0,34,32,43,
38,45,-129,-152,-145,-163,-160,-107,-237,-211,-262,-262,-259,-254,-464,-466,
-747,-489,-726,-728,-715,-720,-683,-658,-666,-647,-1149,-1150,-1141,-1101,
-1053,-979,-1097,-1032,-904,-757,-12827,-919,-12825,-12827,-12815,-12827,-5599,
-10167,-1512,-1213]} 1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 Nf6 5. Bg2 d5 6. Nbd2
Be7 7. O-O b6 {[%cal Bb7b6,Bb6b5][%mdl 32]} 8. Re1 Bb7 9. a3 Qc7 10. Qe2 O-O
11. e5 {C00: French: Unusual White 2nd moves.} Nd7 12. h4 {[#]} b5 $146 ({
Predecessor:} 12... Rae8 13. Bh3 f5 14. exf6 Bxf6 15. Bxe6+ Kh8 16. Qd1 Qd6 17.
Bh3 c4 18. Rxe8 Rxe8 {1-0 (60) Movsziszian,K (2570)-Salvador,R (2447) Imperia
2009}) 13. Nf1 {Black has an edge.} a5 14. N1h2 Rfc8 15. Bf4 b4 16. c3 bxc3 17.
bxc3 Ba6 18. h5 Rab8 19. h6 g6 20. Ng4 Qd8 21. Qd2 Rb3 22. Bg5 c4 23. dxc4 Bxc4
24. a4 Rcb8 25. Rac1 Rb2 26. Qf4 Nc5 {Hoping for ...Nd3.} 27. Bxe7 Qxe7 28. Ng5
Nd3 29. Qf6 {[%csl Gh6][%cal Rf6g7]} Qf8 $36 {[%mdl 2048] Black is more active.
} 30. Kh2 $2 {[#]} (30. Bf1 $11 Nxe1 31. Bxc4 dxc4 32. Rxe1) 30... Nxc1 (30...
Ne7 $1 $19 {and Black stays clearly on top.} 31. Bf1 Nxc1 32. Bxc4 dxc4 33.
Rxc1 Nf5) 31. Rxc1 $17 Be2 (31... R8b7 $15 32. Qf4 Qe7 33. Nf6+ Kh8) 32. Bf3
$11 Bd3 {White must now prevent ...Bf5.} 33. c4 Bf5 {Strongly threatening ...
Nd4.} 34. cxd5 Nd4 35. Bd1 (35. Kg2 $14 {stays ahead.} Nxf3 36. dxe6 Rxf2+ 37.
Nxf2 Nxg5 38. Qxg5 Bxe6 39. Rd1) 35... exd5 $17 {...R2b6 is the strong threat.}
36. Rc7 {[%cal Rg5f7]} R2b7 37. Rxb7 Rxb7 38. Kg2 {[#] Loses the game.} (38.
Qa6 $17 {was called for.} Bxg4 39. Bxg4 Qxh6+ 40. Nh3) 38... Ne6 $1 $19 39.
Nxe6 fxe6 ({Don't play} 39... Bxe6 40. Bf3 $17) 40. Qg5 Be4+ 41. Kh3 $2 (41. f3
Rb2+ 42. Nf2) 41... Qf5 {Black is clearly winning.} 42. Qd8+ (42. Kh4 $142
Qxg5+ 43. Kxg5) 42... Kf7 43. Qf6+ Qxf6 44. Nxf6 {[%mdl 4096] Endgame KRB-KBN}
Rb1 45. Be2 Rh1+ 46. Kg4 Rxh6 47. Nxe4 dxe4 {KR-KB} 48. Kf4 Rh1 49. Kxe4 Rb1
50. Bb5 h5 51. Kf4 Rb4+ 52. Kg5 Rg4+ 53. Kh6 h4 54. gxh4 Rxh4+ 55. Kg5 Rh5+ 56.
Kf4 Rf5+ {Weighted Error Value: White=0.60/Black=0.11} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.40"]
[White "Moussard, Jules"]
[Black "Suleymanli, Aydin"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "2632"]
[BlackElo "2541"]
[Annotator "TA"]
[PlyCount "136"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,136,10,7,19,8,27,15,14,14,35,42,26,16,15,18,34,21,44,0,27,27,27,19,
22,26,37,19,0,-25,0,0,31,0,8,6,12,22,74,53,53,-153,-161,-181,-212,-198,-111,
-105,0,-191,0,-102,-25,-82,-28,-23,-34,-99,-67,-77,-76,-112,-69,-72,-60,-61,
-46,-72,-62,-72,0,-61,0,-60,-60,-71,-74,-73,-70,-69,-73,-72,-72,-73,-52,-58,
-58,-59,-60,-62,-53,-56,-58,-58,-50,-51,-39,-50,-24,-25,-23,-22,-8,-8,0,-26,
-28,-23,-23,-23,-23,-28,-13,-13,-16,-15,-14,-16,-15,-17,-16,-15,-11,-23,-8,-8,
0,0,0]} 1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. Be2 Nf6 {
B11: Caro-Kann: Two Knights Variation.} 7. O-O Be7 8. d3 O-O {[#]} 9. g4 $146 (
{Predecessor:} 9. Qg3 Kh8 10. e5 Nfd7 11. f4 c5 12. Bg4 Nc6 13. Ne2 b5 14. c3
g6 15. Be3 {1-0 (58) Venkatesh,M (2480)-Triapishko,A (2519) Madurai 2019}) 9...
dxe4 10. dxe4 Nfd7 11. Qg2 e5 12. g5 Bc5 13. h4 Qe7 14. Bg4 Rd8 15. Nd1 Na6 16.
Ne3 Bxe3 17. Bxe3 Nf8 18. f4 exf4 19. Bxf4 Rd4 20. Rae1 Re8 21. Bf5 (21. c3 $5
{[%cal Rc3d4]} Rd3 22. Be2 $11) 21... g6 {[#]} 22. Qf2 $1 Rdd8 (22... Red8 23.
Be3) 23. Bh3 Nc5 (23... Ne6 $11) 24. Bd2 $16 Qc7 25. Bc3 $2 (25. Bg2 $14 {
keeps the upper hand.}) 25... Nxe4 $17 26. Rxe4 Rxe4 27. Bg2 Re6 (27... Rc4 $1
$19 28. Qf6 Rxc3 $1 {[%mdl 512]} 29. Qxc3 Qb6+ 30. Rf2 Rd4) 28. Bh3 Re4 (28...
c5 $17 29. Bxe6 Nxe6) 29. Bg2 $1 $19 {Strongly threatening Qf6.} Re6 (29... Rc4
$1 $19 {...Qb6 is the strong threat.} 30. Qf6 Rxc3 $1 {[%mdl 512]} 31. Qxc3
Qb6+ 32. Rf2 Rd4) 30. Bh3 $1 $17 Qb6 (30... Rd5 $17 {Threatens to win with ...
Re4.} 31. Bxe6 Nxe6) 31. Bxe6 {[#]} (31. Qxb6 $11 axb6 32. Bxe6 Nxe6 33. Kg2)
31... Nxe6 (31... Qxf2+ $1 $17 32. Kxf2 Nxe6) 32. Qxb6 $11 axb6 {[%mdl 4096]
Endgame KRB-KRN} 33. a4 ({Better is} 33. Bf6 $1 $15 Rd5 34. c4) 33... Rd5 34.
Re1 Kf8 35. Kf2 Ke7 36. Kg3 Kd7 37. Rf1 Rf5 38. Rd1+ Kc8 39. Re1 Kd7 40. Rd1+
$1 Rd5 41. Rf1 Ke8 42. Re1 Rc5 43. Re4 Kd7 44. Rb4 Kc7 45. Re4 b5 46. axb5 cxb5
47. Re2 Rf5 48. Rd2 Kc6 49. Rd1 Nf4 50. Re1 Nh5+ 51. Kg2 Rf4 52. Re7 Rxh4 53.
Rxf7 Rg4+ 54. Kf3 Rxg5 {Hoping for ...Rf5+.} 55. Rxh7 Rg3+ 56. Kf2 Rg5 57. Rh8
Nf4 58. Rc8+ Kd7 59. Rb8 Kc7 60. Rg8 Nd5 61. Bd2 Rf5+ 62. Ke2 Rf6 63. Bg5 Rc6
64. Rg7+ Kb6 65. Kd2 Rd6 66. Kd3 Nf4+ {[%mdl 64] Discovered Attack (Double
check)} 67. Ke4 Ne6 68. Be3+ Kc6 {Weighted Error Value: White=0.12/Black=0.22}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.41"]
[White "Durarbayli, Vasif"]
[Black "Zvjaginsev, Vadim"]
[Result "0-1"]
[ECO "B36"]
[WhiteElo "2629"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "126"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,126,52,41,55,33,35,20,31,9,23,-9,12,6,9,-8,-20,-18,-5,-2,-12,-46,-49,
-60,-67,-68,-64,-78,-74,-74,-73,-65,-67,-64,-66,-93,-92,-328,-319,-325,-316,
-316,-316,-318,-308,-307,-301,-299,-277,-331,-308,-302,-234,-242,-227,-250,
-246,-204,-196,-206,-146,-197,-199,-202,-206,-204,-197,-186,-200,-182,-183,
-285,-275,-383,-376,-368,-351,-621,-596,-740,-711,-668,-633,-1026,-1021,-969,
-955,-916,-806,-841,-584,-3603,-4735,-3922,-3043,-2241,-1866,-2212,-1818,-7192,
-6945,-7274,-6933,-5994,-5958,-7048,-7056,-29970,-29960,-4627,-4291]} 1. e4 c5
2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9.
Be3 O-O 10. Qd2 a5 {B36: Sicilian: Maroczy Bind: Gurgenidze System.} 11. f3 a4
12. Rc1 Qa5 {[#] The position is equal.} 13. g4 $146 ({Predecessor:} 13. Kf2
Qe5 14. Bf4 Qc5+ 15. Be3 Qe5 16. Bf4 Qc5+ 17. Be3 Qe5 {1/2-1/2 (17) Svane,R 
(2615)-Gabuzyan,H (2590) Tornelo INT 2021}) 13... Be6 14. Nb5 Rfc8 15. Qxa5
Rxa5 16. Kd2 Nd7 17. Nd4 Ne5 {[%cal Re5c4]} 18. Nxe6 fxe6 19. h4 Nc6 20. Rb1 a3
21. b4 Ra4 22. b5 Na5 23. c5 dxc5 24. Rhc1 b6 25. Bd1 $1 {[%cal Rd1a4]} Rc4 26.
Ke2 {Rxc4 is the strong threat.} Kf7 27. Bb3 $2 {This costs White the game.} (
27. Rxc4 $17 Nxc4 28. f4) 27... Rb4 $1 $19 (27... Rxc1 28. Bxc1 c4 29. Ba4 $17)
28. Bc2 (28. Bxe6+ Kxe6 29. Rxb4 cxb4 $19) 28... Rb2 29. f4 Bc3 (29... Rxa2 30.
e5 $19) 30. Rxb2 axb2 (30... Bxb2 31. Rh1 $11) 31. Rb1 Rd8 32. Bd3 e5 $1 33. f5
Bd4 34. fxg6+ Kxg6 35. Bxd4 exd4 {[%mdl 4096] Endgame KRB-KRN} ({Less strong is
} 35... cxd4 36. Rxb2 Nb7 37. a4 $17) 36. e5+ Kg7 {Threatens to win with ...c4.
} 37. Rxb2 Rd5 38. Be4 Rxe5 39. Kd3 {[#]} Nc4 $1 {[%cal Rc4b2][%mdl 576]
Deflection} 40. Kxc4 Rxe4 {KR-KR} 41. a4 {[#] White wants to play a5!} d3+ $1 (
{Inferior is} 41... Rxg4 42. a5 $16) 42. Kxd3 Rxa4 43. Re2 Kf7 ({Weaker is} 
43... Rxg4 44. Rxe7+ Kg8 45. Rb7 $11) 44. Rf2+ (44. Rg2 {was necessary.}) 44...
Ke6 45. Rf5 Rxg4 46. Rh5 Kd6 47. Rh6+ $2 (47. Rxh7 Rb4 48. Rh6+ e6 49. Rh8)
47... e6 48. Rxh7 Rb4 49. h5 Rxb5 50. h6 Rb3+ 51. Ke4 Rb4+ 52. Kf3 Rh4 53. Kg3
Rh1 54. Kf4 c4 55. Ke3 Rh4 56. Kd2 Rh3 57. Rh8 Kc5 58. h7 Kb5 59. Kc2 e5 60.
Kd2 e4 61. Kc2 e3 62. Kc3 e2+ 63. Kd2 {[#]} Re3 $3 {[%mdl 576] Promotion. 
Weighted Error Value: White=0.45/Black=0.02} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.42"]
[White "Ganguly, Surya Shekhar"]
[Black "Zhou, Jianchao"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2617"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,70,19,10,10,5,10,1,0,-8,37,0,0,2,0,2,5,-3,-28,-66,-59,-72,-64,-58,
-49,-104,-94,-66,-54,-62,-62,-85,-63,-85,-80,-91,-16,-204,-207,-194,-189,-293,
-298,-504,-509,-504,-480,-505,-453,-522,-523,-768,-761,-29980,-29979,-29979,
-29980,-29980,-29981,-29981,-29981,-29982,-12841]} 1. Nf3 Nf6 2. c4 e6 3. Nc3
d5 4. e3 Be7 5. b3 O-O 6. Bb2 dxc4 {A13: English Opening: 1...e6.} 7. Bxc4 c5
8. Qc2 {[#]} b6 $146 {The position is equal.} ({Predecessor:} 8... Nc6 9. O-O
b6 10. Rfd1 Bb7 11. d4 cxd4 12. Nxd4 Nxd4 13. Rxd4 Qc8 14. Rad1 Qc6 {1/2-1/2 
(51) Vachier Lagrave,M (2774)-Wei,Y (2721) Chess.com INT 2019}) 9. Ng5 Bb7 10.
h4 (10. Nd5 $2 exd5 11. Bxf6 g6 $19) (10. Ne2 {is interesting.} Nbd7 11. Nf4
Bd6 12. Nfxe6 fxe6 13. Nxe6 Qc8 14. Qd3) 10... Nbd7 $1 (10... Bxg2 $2 11. Rg1
$16) 11. f4 a6 12. Bd3 {[%cal Rd3h7]} h6 $36 {[%mdl 2048] [#] Black is more
active.} (12... Bxg2 $6 13. Rh2 $16) 13. Nce4 $1 Re8 (13... hxg5 $2 14. hxg5
Re8 15. gxf6 $18) (13... b5 14. Nxf6+) 14. Rh3 Nxe4 15. Nxe4 f5 (15... Bxh4+ $6
16. g3 $11) 16. Ng5 {Strongly threatening Bxf5!} Bd5 (16... Bxg5 $6 17. hxg5
hxg5 18. g4 $16 (18. Qc3 Qe7 $11)) 17. g4 hxg5 $17 18. hxg5 Bxg5 19. fxg5 Qxg5
20. Be2 fxg4 21. Rh2 Nf6 22. O-O-O Qf5 ({Black should play} 22... e5 $17 {
next ...g3 is good for Black.} 23. Rg1 g6) 23. Qc3 $2 {White does not recover
from this.} (23. Rg1 $11) 23... g3 $19 24. e4 Qg5 (24... gxh2 $2 {is the wrong
capture.} 25. exf5 h1=Q 26. Rxh1 $18) ({Don't go for} 24... Bxe4 $2 25. Qxg3
Qg6 26. Qxg6 $18) 25. exd5 (25. Rh3 {was called for.} Nxe4 26. Qe5 Qxe5 27.
Bxe5) 25... gxh2 26. dxe6 (26. Qh3) 26... Rxe6 27. Bc4 Qg4 28. Bxe6+ Qxe6 29.
Rh1 {[#]} Qg4 {White must now prevent ...Qg1+.} 30. Qe5 Qg1+ {[%mdl 64] Double
Attack} 31. Kc2 Qxh1 {Black mates.} 32. Qe6+ Kh8 33. Qh3+ Nh7 34. Bxg7+ Kxg7
35. Qg3+ Kf7 {Weighted Error Value: White=0.54/Black=0.09} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.43"]
[White "Mamedov, Rauf"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2673"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,96,33,-17,0,0,0,0,0,0,0,0,0,-5,-2,0,6,6,13,6,14,6,23,16,11,17,18,18,
6,4,4,8,9,5,25,5,15,7,8,7,11,0,0,0,0,0,10,10,10,9,10,7,7,7,7,0,0,0,79,79,89,27,
14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1686,-1558]} 1. e4 e5 2.
Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nc3 (6. Nxd7 {feels hotter.} Bxd7
7. O-O Bd6 8. Qh5 Nf6 9. Re1+) 6... Nxc3 {C43: Petroff Defence: 3 d4.} (6...
Nxe5 {is more complex.} 7. dxe5 Bb4 8. Bxe4 Bxc3+ 9. bxc3 dxe4 10. Qd4 Bf5) 7.
bxc3 Bd6 {Nowadays more popular than 7...Nxe5.} 8. Qh5 {[%csl Ge5][%cal Rh5f7]
[#]} g6 {The position is equal.} 9. Qh6 Nxe5 10. dxe5 Bxe5 11. O-O $1 {
Strongly threatening Re1.} Qf6 ({Worse is} 11... Bxc3 12. Qe3+ Be6 13. Bb5+ c6
14. Qxc3 $18) 12. Rb1 {[#]} Qg7 $146 ({Predecessor:} 12... Bxc3 13. Ba3 b6 14.
Qe3+ Kd7 15. Rb3 Bd4 16. Qd2 Bb7 17. Bb5+ c6 18. Rf3 Qg7 19. Qg5 f5 20. Bd3
Rae8 {1/2-1/2 (20) Balogh,C (2567)-Voloshin,L (2470) Austria 2006}) 13. Qh4 O-O
14. Bh6 Qf6 15. Qxf6 Bxf6 16. Bxf8 Kxf8 17. c4 dxc4 18. Bxc4 a5 19. a4 b6 20.
Rbd1 Bf5 21. Rfe1 Kg7 22. Bb3 Rb8 23. h3 h5 24. Rd5 Be6 25. Rxe6 fxe6 $11 {
[%mdl 4096] Endgame KRB-KRB} 26. Rd7+ {[%mdl 64] [#] Discovered Attack} Kh6 27.
Rxc7 Rd8 28. Kf1 Rd6 29. Ke2 h4 30. Bc4 Bd4 31. Bd3 e5 32. Rc4 Rf6 33. f3 Kg7 (
33... Kg5 $11 {keeps the balance.}) 34. c3 $16 Bc5 35. Rg4 ({Better is} 35.
Rxh4 $16 Rf4 36. Rg4) 35... Be7 $11 36. Bb1 Rc6 37. Be4 Rd6 38. Bd3 Rc6 39. Be4
Rd6 40. Bc2 Rc6 41. Bb1 g5 42. Kd3 Kf6 43. Re4 Rd6+ 44. Kc2 Rd8 45. Ba2 Bc5 46.
Bc4 Rd6 47. Bd3 Rd8 48. Rxe5 $2 {[%mdl 8192]} Kxe5 {[%mdl 32768] Weighted
Error Value: White=0.24/Black=0.06. An unexpected result.} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.44"]
[White "Gelfand, Boris"]
[Black "Movsesian, Sergei"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2680"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,73,-25,-28,-22,-17,-39,0,-11,0,-12,-11,-20,-32,-22,-17,0,-25,-10,-19,
-3,-25,-15,8,-10,67,60,175,178,185,157,187,172,172,172,377,378,764,758,1489,
1448,1513,1538,1561,1582,1477,1461,1382,1387,1387,1364,1314,0,95,0,986,1295,
1234,1234,4132,1267,1250,1250,2396,931,820,813]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6
4. Nc3 dxc4 5. e4 b5 $1 6. Be2 {D15: Slav Defence: 4 Nc3 a6 and gambit lines
after 4 Nc3 dxc4.} e6 7. a4 $5 {[%mdl 4] Exploring less charted territory.} b4
{[%cal Rb4c3]} 8. e5 {The position is equal.} bxc3 9. exf6 cxb2 10. fxg7 bxa1=Q
11. gxh8=Q Qa5+ $1 {[#]} 12. Nd2 $5 $146 {[%mdl 8] Black must now prevent 0-0.
An interesting novelty.} ({Predecessor:} 12. Kf1 Q5xa4 13. Qxa4 Qxa4 14. g3 Nd7
15. Kg2 Bb7 16. Bf4 O-O-O 17. Qxh7 Qa2 18. Nd2 {1/2-1/2 (43) Halkias,S (2553)
-Heinemann,J (2255) Riga 2019}) 12... c3 13. O-O $1 cxd2 14. Bxd2 Qxd1 15. Rxd1
Qxa4 16. Qxh7 {And now Bh5! would win.} a5 (16... Qxd4 $2 17. Bg5 $18) ({
Black should try} 16... e5 $11 17. Bh6 Qb4) 17. h4 $1 $14 {[%mdl 1024] White
has compensation.} Ra7 (17... Qxd4 $2 18. Bg5 $18) (17... Qa3 $1 $14) 18. h5 $1
$18 Ba6 {[#]} (18... Qxd4 $2 19. Bg5 $18) 19. Bf3 Rd7 ({Wrong is} 19... Qxd4 $2
20. Be3 $18) 20. h6 Rxd4 21. Bh5 Rd7 (21... Qxd1+ {was called for.} 22. Bxd1
Rxd2) 22. Qg8 {aiming for h7.} Bd3 {[#]} (22... Qh4 23. Rb1 Bb7) 23. Bg5 $1 {
Strongly threatening Rxd3!} Bg6 24. Re1 {Threatening mate with Rxe6+!} ({Not} 
24. Rxd7 Nxd7 25. h7 (25. Bxg6 Qd1+ 26. Kh2 Ne5 $11) 25... Bxh5 $18) 24... Bxh5
25. h7 {Qxf8+! would kill now.} Qb4 {[#]} 26. Rxe6+ $1 {[%mdl 512]} fxe6 27.
Qxe6+ Re7 28. Qc8+ Kf7 29. Qf5+ Ke8 30. Qc8+ $2 (30. h8=Q $18 {[%csl Gf5][%cal
Rh8f8]} Nd7 31. Bxe7 {[%mdl 64] Pin}) 30... Kf7 $16 {( -> ...Re1+)} 31. Qf5+ $2
{[%mdl 8192]} (31. h8=Q $16 Re1+ 32. Kh2 Qd6+ 33. f4) 31... Ke8 $18 32. h8=Q {
[%csl Gf5][%cal Rh8f8] White is clearly winning.} Re1+ 33. Kh2 {[%cal Rh8h5]}
Bg4 34. Qg6+ (34. Qd3 $142 Re7 35. Qg6+ Kd7 36. Qxf8) 34... Kd7 35. Qf7+ {
[%mdl 64] Double Attack} Be7 36. Qhe8+ (36. Bf4 $142 Qxf4+ 37. Qxf4) 36... Kc7
37. Bxe7 {Weighted Error Value: White=0.41/Black=0.41} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.45"]
[White "Adhiban, B.."]
[Black "Martirosyan, Haik M."]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2672"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,62,4,15,6,10,0,13,6,40,0,0,0,-3,-3,10,4,14,8,0,12,25,-184,-216,-161,
-78,-141,-216,-353,-358,-474,-465,-652,-668,-582,-203,-183,-204,-211,-194,-191,
-198,-176,-93,-214,-226,-349,-359,-747,-742,-664,-637]} 1. e4 e5 2. Nf3 Nc6 3.
Bc4 Bc5 4. d3 Nf6 5. Bg5 h6 6. Bh4 d6 7. c3 {is the new trend.} a6 8. Nbd2 {
C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Ba7 9. O-O g5 10.
Bg3 {The position is equal.} Nh7 $5 {[%mdl 4] [#] A promising side line.} 11.
Kh1 $146 (11. d4 $5) ({Predecessor:} 11. d4 h5 12. h4 g4 13. Ne1 exd4 14. Nd3
O-O 15. Bb3 Re8 16. Re1 Bd7 17. Nf4 dxc3 18. bxc3 {1/2-1/2 (26) Straka,Z (2569)
-Parshin,V (2384) ICCF email 2017}) 11... Nf8 12. d4 {[%cal Rd4e5]} Ng6 13.
dxe5 dxe5 14. Bd5 {Black must now prevent Bxc6+.} f6 {[#]} 15. Nh4 $1 gxh4 16.
Qh5 $1 {[%csl LRg6,LRh4]} Nce7 {[#]} 17. f4 $1 hxg3 $19 18. fxe5 {[#]} Qd7 (
18... Bf2 $1 $19 {And now ...Be6! would win.} 19. exf6 Qd6 20. fxe7 Kxe7) 19.
e6 $17 Qb5 20. a4 (20. Rxf6 $142 Rg8 21. Nc4 gxh2 22. Rd1) 20... Qc5 $19 ({
Don't take} 20... Qxb2 21. Nc4 $19) 21. Rxf6 gxh2 22. Nf3 (22. Kxh2 $142 c6 23.
Rxg6) 22... Rg8 23. Rd1 Bxe6 $2 24. Bxe6 {Threatening mate with Bf7+.} Qxh5 25.
Bd7+ Kd8 26. Bg4+ {[#]} Qd5 $1 {[%cal Rd5d1]} 27. exd5 {[#]} Bc5 ({Better is} 
27... Rf8 $1 $19 {[%cal Rf8f6]} 28. Rxf8+ Nxf8) 28. b4 (28. d6 $17 cxd6 29. b4)
28... Bd6 29. Nd4 (29. c4 $142) 29... Nxd5 30. Rf7 (30. Rxd6+ cxd6 31. Ne6+ {
[%mdl 64] Discovered Attack} Ke7 32. Rxd5) 30... Ne5 {[%mdl 64] Double Attack,
Discovered Attack} 31. Ne6+ Ke8 {Weighted Error Value: White=0.63/Black=0.25}
0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.46"]
[White "Paravyan, David"]
[Black "Bartel, Mateusz"]
[Result "0-1"]
[ECO "D56"]
[WhiteElo "2642"]
[BlackElo "2597"]
[Annotator "TA"]
[PlyCount "248"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,248,18,25,0,12,12,6,19,29,8,8,0,22,-8,-8,-10,-13,-10,-14,-13,-13,-14,
-11,-9,0,0,7,3,0,0,14,8,0,12,19,0,0,0,0,0,0,0,0,-7,0,-13,-7,-24,-25,-25,-28,
-32,-8,-7,-11,-11,-13,-68,-68,-68,-68,-82,-16,-25,-12,-12,-12,-30,-27,-59,-59,
-105,-34,-106,-31,-12,0,-109,-106,-108,-114,-105,-106,-105,-76,-135,-88,-129,
-108,-112,-73,-50,0,-97,-97,-100,-97,-97,-97,-96,-97,-96,-92,-95,-72,-321,-68,
-74,-74,-81,-81,-81,-79,-70,-41,-87,-92,-81,-87,-136,-139,-138,-135,-88,-19,
-17,0,-97,-8,-99,-90,-87,-92,-191,-170,-197,-193,-257,-260,-382,-323,-1107,
-1113,-1103,-1000,-706,-670,-601,-212,-525,-431,-1733,-1859,-1719,-1503,-1424,
-1370,-10412,-10412,-10412,-10412,-10412,-10412,-10412,-10412,-10412,-10412,
-10412,-10412,-10412,-10412,-10412,-10412,-10412,-10412,-10412,-9933,-10412,
-10412,-10412,-10412,-10412,-10412,-10412,-10412,-10412,-9147,-9147,-9147,
-8456,-8241,-7258,-6997,-6937,-5670,-5095,-4767,-4752,-4204,-4197,-4175,-4175,
-4175,-4167,0,-4160,-4160,-4160,-4160,-4160,-4160,-4160,-4153,-4153,-4153,
-4153,-4153,-4153,-4144,-29989,-29987,-29990,-29991,-29991,-29992,-29992,
-29993,-29993,-29991,-29991,-29987,-29989,-29988,-29988,-29989,-29989,-29990]} 
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. Bg5 h6 6. Bh4 Be7 7. e3 O-O 8. h3 {
D56: Queen's Gambit Declined: Lasker Defence.} c6 9. Qc2 dxc4 $5 {[%mdl 4]
Leaves trodden paths.} 10. Bxc4 {The position is equal.} b5 11. Bd3 {[#]} Bb7
$146 ({Predecessor:} 11... a6 12. g4 Nd5 13. Bxe7 Qxe7 14. e4 Nb4 15. Qd2 Nxd3+
16. Qxd3 Bb7 {1-0 (52) Fernandes,A (1810)-Nogueira,D (1533) Famalicao 2014})
12. O-O Rc8 13. Rad1 b4 14. Na4 c5 15. dxc5 Qc7 16. Nd4 Nxc5 17. Nxc5 Qxc5 18.
Qxc5 Rxc5 19. Nb3 Rh5 (19... Rcc8 {seems wilder.} 20. f3 Bd5 21. e4 Bxb3 22.
axb3 Bc5+) 20. Bg3 Rg5 21. Be2 Bd5 22. h4 Rxg3 23. fxg3 Ne4 24. Bf3 Nxg3 25.
Rf2 Bxb3 26. axb3 Bc5 27. Rd3 Nf5 28. Re2 Nxh4 29. Rc2 Bb6 30. Kf2 Ng6 31. Ke2
Ne5 32. Rd1 g5 33. Rdc1 g4 34. Bb7 Kg7 35. g3 (35. Rc8 $11) 35... Rd8 $15 36.
Rd2 Rxd2+ 37. Kxd2 {[%mdl 4096] Endgame KRB-KBN} h5 (37... Nd7 $1 $17 38. Rc4
f5) 38. Ke2 $11 Nd7 39. Be4 Nc5 40. Bc2 f5 41. Kf2 Kf6 42. Kg2 Kg5 (42... e5
$17) 43. Rh1 (43. Rf1 $1 $15) 43... Bc7 ({Better is} 43... e5 $17 44. Rd1 e4)
44. Ra1 $15 Bb6 (44... a6 $11) 45. Rh1 $17 e5 46. Rd1 e4 47. Rd5 Kf6 48. Kf2
Ke6 49. Rd4 (49. Rd1 $142) 49... a5 50. Rc4 Ke5 51. Ke2 Ba7 52. Rd4 Bb6 53. Rd1
(53. Rc4 $1 $11 {remains equal.}) 53... Ne6 54. Rd7 Nc7 55. Re7+ Kf6 56. Rh7 {
And now Rh6+ would win.} Nd5 57. Rxh5 {Black must now prevent Bxe4!} Ke5 ({
Much worse is} 57... Nxe3 $6 58. Rh6+ (58. Bxe4 $2 Kg6 $19) 58... Kg5 59. Rxb6
$14) 58. Rh8 Nxe3 59. Rb8 $2 Nd5 $2 (59... Nxc2 $19 60. Rxb6 f4 61. gxf4+ (61.
Rb5+ $2 Kd6 $19) 61... Kxf4 62. Rf6+ Ke5) 60. Re8+ $15 Kd6 61. Rf8 Ke6 62. Re8+
Ne7 63. Bd1 Bd4 64. Kf1 Bxb2 65. Be2 Be5 66. Kg2 Bc7 $1 67. Bc4+ {[#]} Kd6 $1
68. Rf8 Ke5 (68... Kc5 $17 {...a4! is the strong threat.} 69. Ra8 Bb6) 69. Re8
$1 $11 {[%cal Re8e7]} Kd6 ({Black should try} 69... Bd6 $11) 70. Rf8 $1 $17 Nd5
(70... Kc5 $17 71. Ra8 Bb6) 71. Kf2 (71. Bxd5 $11 {was the only way to keep
the balance.} Kxd5 72. Rxf5+ Be5 73. Rf7) 71... Bb6+ {Black continues to play
with concentration.} 72. Ke2 Nc3+ 73. Ke1 (73. Kf1 $17 {keeps fighting.}) 73...
Ke5 $19 74. Bg8 Bc5 75. Ra8 {[#]} (75. Rc8 {is a better defense.} Kd4 76. Bh7)
75... e3 $1 {Hoping for ...Ke4.} 76. Rxa5 (76. Re8+ {only move.} Kf6 77. Bc4)
76... Kd4 77. Ra8 $2 (77. Bc4 Ne4 78. Ra8) 77... Bd6 78. Rd8 Kc5 79. Rc8+ Kb6
80. Re8 Bxg3+ 81. Kf1 f4 82. Bf7 (82. Bh7 $142 e2+ 83. Rxe2) 82... Nb1 83. Ke2
Bf2 84. Kd3 f3 85. Bh5 e2 86. Bxg4 e1=Q 87. Rxe1 Bxe1 88. Bxf3 Kc5 89. Bh5 Kd5
90. Bf7+ Ke5 91. Bg8 Kf4 92. Bd5 Bc3 93. Kc2 Nd2 94. Kd3 Nf3 95. Ba8 Ne5+ 96.
Ke2 Bd4 97. Bh1 Kf5 98. Bd5 Kf6 99. Bg8 Ke7 100. Bd5 Kd6 101. Bg8 Kc5 102. Be6
Bg1 103. Kf1 Bh2 104. Ke2 Bf4 105. Kd1 Kd4 106. Kc2 Ke3 107. Bd5 Nd3 108. Bc4
Ne5 $2 (108... Nc5 $19 {aiming for ...Bb8.} 109. Bd5 Ne4) 109. Bb5 $2 {[%mdl
8192]} (109. Bd5 $11 Nf3 110. Kd1) 109... Bg3 110. Ba6 Be1 111. Bb5 Bc3 112.
Ba6 Nf3 113. Bc4 Nd4+ 114. Kc1 Be1 115. Bg8 Kd3 116. Kb2 Bh4 {Black mates.}
117. Bc4+ Kd2 118. Bg8 Bf6 119. Bc4 Nc2+ 120. Ka2 Ne1 121. Kb1 Nd3 122. Bg8 Kc3
123. Bf7 Bg5 124. Bg8 Nc1 {Weighted Error Value: White=0.21/Black=0.19} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.47"]
[White "Gukesh D"]
[Black "Gretarsson, Hjorvar Steinn"]
[Result "1/2-1/2"]
[ECO "D61"]
[WhiteElo "2640"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "191"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,191,27,25,25,0,8,0,24,14,26,6,20,-5,-6,-16,-6,-6,-6,-4,-3,-9,-3,-7,
-7,-8,0,-6,0,-7,-7,-8,-7,-13,0,0,0,0,0,0,0,0,0,0,0,0,0,-5,0,-65,-56,-233,-240,
-225,-138,-149,-133,-123,-114,-219,-162,-141,-35,-164,-104,-149,-125,-484,-154,
-250,0,-479,-473,-468,-454,-475,-467,-460,-469,-452,-346,-501,-492,-460,-378,
-666,-645,-747,-70,-70,-70,-70,-69,-69,-70,-70,-70,-70,-66,-66,-66,-66,-66,-66,
-66,-66,-66,-83,-66,-66,-66,-66,-66,-66,-66,-66,-66,-83,-66,-66,-66,-66,-66,
-66,-66,-66,-66,-66,-7,-66,-66,-66,-14,-66,0,-66,-54,-66,-66,-66,-66,-66,-66,
-66,-66,-66,-54,-54,-54,-66,-66,-66,-66,-66,-66,-66,-66,-66,-66,-66,-66,-66,
-60,-66,-66,-66,-24,-31,0,-66,0,-66,-54,-54,0,-67]} 1. d4 Nf6 2. c4 e6 3. Nf3
d5 4. Nc3 c6 5. Bg5 Nbd7 6. e3 h6 7. Bh4 Be7 8. Qc2 O-O 9. Be2 dxc4 10. Bxc4 b5
{D61: Queen's Gambit Declined: Classical: 7 Qc2.} 11. Bd3 Bb7 12. O-O Rc8 13.
Rfd1 b4 14. Bxf6 Nxf6 {[#]} (14... Bxf6 {looks sharper.} 15. Ne4 c5 16. Nd6
Bxf3 17. gxf3 Rc6) 15. Ne4 $146 ({Predecessor:} 15. Na4 c5 16. dxc5 Qa5 17. Nd4
Bd5 18. c6 Rfd8 19. b3 e5 20. e4 exd4 21. exd5 Qxd5 {0-1 (27) Herzog,K (1828)
-Pilgram,K (1830) LSS email 2014}) 15... c5 16. dxc5 Bxe4 17. Bxe4 Qe8 18. Bd3
Rxc5 19. Qe2 Qb8 20. Nd4 Rd8 21. g3 Bf8 22. Rd2 h5 23. h3 Qb6 24. Rad1 a5 25.
Bc2 e5 26. Nf3 Rxd2 27. Rxd2 e4 28. Nd4 g6 29. h4 Bd6 30. Qd1 Be5 31. Bb3 Kg7
32. Kg2 Rc7 33. Ne2 (33. Rc2 $11) 33... Ng4 $1 $15 34. Nd4 $2 (34. Qe1 $15)
34... Qf6 $1 $19 {White must now prevent ...Bxd4.} 35. Qe2 Rc5 36. f3 exf3+ 37.
Nxf3 Rc7 38. Ng5 (38. e4 $17) 38... Re7 {Strongly threatening ...Bxg3!} 39. e4
Qb6 (39... Bd4 $17 {Hoping for ...Be3.} 40. Bxf7 Be3) 40. Qf3 (40. Bxf7 $15
Rxf7 41. Nxf7 Kxf7 42. Qc4+ Ke7 43. Qg8) 40... Bf6 (40... Bb8 $19 41. Re2 Ba7)
41. Qf4 Qc6 42. Re2 $2 {[%mdl 8192]} (42. Rc2 $17 {is a better chance.} Bxg5
43. hxg5 Qxe4+ 44. Qxe4 Rxe4 45. Rc7) 42... Qb5 $2 (42... a4 $19 {is more
deadly.} 43. Bd1 Be5) 43. Rd2 (43. Qd2 $17 {was worth a try.}) 43... Qc6 $2 (
43... a4 44. Bd1 Be5) 44. Re2 $1 {[#]} a4 $1 {[%cal Ra4b3]} 45. Bd1 Be5 46. Qf3
Rd7 47. Bc2 Qb5 48. Nh3 Bc7 {Threatens to win with ...b3!} 49. Ng1 (49. b3 {
was called for.} axb3 50. axb3) 49... Bb6 50. e5 {intending e6.} Nxe5 51. Qe4 (
51. Bxa4 Nxf3 52. Bxb5 Nxg1 53. Rc2) 51... Re7 52. Nf3 {[#]} Nc6 ({Better is} 
52... f5 $1 $19 53. Qxe5+ Rxe5 54. Rxe5 Qc4 55. Bxa4 Qxa2 {[%mdl 64] Double
Attack}) 53. Bd3 $15 Qc5 54. Rc2 Rxe4 55. Rxc5 Bxc5 56. Bxe4 {[%mdl 4096]
Endgame KBN-KBN} Ne7 57. Ne5 f5 58. Bf3 a3 59. bxa3 bxa3 60. Bd1 Nd5 61. Bb3
Nc3 62. Kf3 Nb5 {And now ...Nd4+ would win.} 63. Kg2 Bd4 64. Nd3 Be3 65. Ne5
Bc5 66. Nd3 Bd6 67. Nc1 Nc3 68. Bc4 Kf6 69. Ne2 Ne4 70. Bd5 Be5 71. Kf3 Nd6 72.
Kg2 Ke7 (72... g5 $15) 73. Kf3 (73. Nf4 $1 $11) 73... Ne8 74. Bb3 Nf6 (74...
Kf6 $15) 75. Kg2 (75. Nf4 $11) 75... Ne8 76. Kf3 $1 Nc7 77. Kg2 Ne6 78. Kf3 Kf6
79. Kg2 Bb8 80. Bc4 Nc5 81. Bd5 g5 82. hxg5+ Kxg5 83. Kh3 Nd3 84. Bc4 Nf2+ 85.
Kg2 Ne4 86. Kh3 Be5 87. Bd5 Bd6 88. Bc4 Bb4 89. Bd5 Be1 90. Be6 Kf6 91. Bc4 Ke5
92. Bb3 Kf6 93. Bd5 (93. Bc4 $1 $11) 93... Kg5 94. Be6 $1 Nf2+ 95. Kg2 Ne4 96.
Kh3 $1 {Whites escaped into a draw.  Weighted Error Value: White=0.41/Black=0.
35} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.48"]
[White "Neiksans, Arturs"]
[Black "Abasov, Nijat"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2570"]
[BlackElo "2638"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,45,23,0,10,3,17,6,17,10,15,0,9,13,17,8,17,0,5,2,19,0,0,0,19,0]} 1. e4
c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6
9. Na3 b5 10. Nd5 Be7 11. Bxf6 Bxf6 12. c4 b4 {The position is equal. 12...0-0
is the modern continuation. B33: Sicilian: Pelikan and Sveshnikov Variations.}
13. Nc2 O-O 14. Be2 a5 15. O-O Bg5 16. Bg4 Bb7 17. Qd3 g6 18. Rad1 {[#]} h5
$146 ({Predecessor:} 18... Nb8 19. a3 bxa3 20. Nxa3 Na6 21. Nb5 Nc5 22. Qf3 Rb8
23. Bh3 Bc6 24. Ndc3 Be7 25. Qe2 f5 26. exf5 gxf5 {1/2-1/2 (49) Kolasinski,K 
(1975)-Bednarek,S (2313) Mrzezyno 2010}) 19. Bh3 Ne7 20. Nce3 Nc6 21. Nc2 Ne7
22. Nce3 Nc6 23. Nc2 {Not much happened in this game.  Weighted Error Value:
White=0.08/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.49"]
[White "Jumabayev, Rinat"]
[Black "Van Foreest, Lucas"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2658"]
[BlackElo "2543"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,61,24,25,18,17,17,15,32,14,29,27,32,19,31,17,25,14,31,20,85,85,71,64,
140,141,136,125,139,149,160,152,191,188,189,194,195,150,156,142,141,78,256,261,
258,250,266,258,1463,1422]} 1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. Be3 a6 5. Qd2 b5 {
[%cal Bb7b5,Bb5b4][%mdl 32]} 6. a4 b4 7. Nd1 a5 8. c3 Nf6 {B06: Modern Defence.
} 9. f3 bxc3 10. bxc3 O-O {The position is equal.} 11. Bd3 Nfd7 12. Ne2 {[#]}
c5 $146 ({Predecessor:} 12... e5 13. O-O Na6 14. Nb2 exd4 15. cxd4 Nb4 16. Bc4
d5 17. Bb3 Ba6 18. Rfc1 c6 {1/2-1/2 (36) Sanjuan Garcia,M (2112)-Bernabeu
Lopez,C (2321) Algeciras 2018}) 13. O-O Na6 14. Nb2 cxd4 15. cxd4 Nb4 16. Bb5
f5 (16... d5 $11 {remains equal.}) 17. exf5 $16 Rxf5 18. Nc4 Ba6 (18... Nb8 $14
) 19. Bxd7 {[%mdl 64] [#] Overworked Piece} Qxd7 20. Nb6 {[%csl LRa8,LRd7]
[%mdl 64] Double Attack} Qb7 21. Nxa8 Qxa8 22. Ng3 Rd5 23. Rfd1 Qc6 24. Ne4 Qd7
25. Rac1 Rf5 26. Bh6 Nd3 27. Qa2+ (27. Rb1 $142) 27... e6 $2 {[#] A mistake
that costs the game.} (27... Rf7 $16 {was worth a try.} 28. Bxg7 (28. Ng5 $2
Bxd4+ 29. Kh1 Nf2+ 30. Qxf2 Bxf2 $19) 28... Nxc1 29. Rxc1 Kxg7) 28. Bxg7 $18
Nxc1 29. Rxc1 Kxg7 30. Qb2 Rd5 $2 (30... Rf8 31. d5+ e5) 31. Qb8 {Weighted
Error Value: White=0.07/Black=0.24} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.50"]
[White "Adly, Ahmed"]
[Black "Bjerre, Jonas Buhl"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2602"]
[BlackElo "2569"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,65,18,45,33,40,32,13,0,0,0,4,0,0,-12,-14,-49,-47,-51,-40,-68,0,1,1,1,
1,5,110,81,98,95,78,89,170,168,159,162,172,158,214,227,236,230,254,214,308,284,
290,297,352,348,446,446,446,446]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 dxc4 5.
Bg2 a6 6. O-O Nc6 7. e3 Rb8 8. Qe2 {E04: Open Catalan: 5 Nf3.} b5 9. b3 cxb3
10. axb3 {The position is equal.} Bd6 11. Bb2 Nb4 12. e4 {aiming for e5.} Be7 {
[#]} 13. Nc3 $146 ({Predecessor:} 13. Rd1 O-O 14. Nc3 Bb7 15. h4 Qe8 16. Rac1
c5 17. e5 Nd7 18. Ne4 c4 19. bxc4 bxc4 20. Rxc4 {1/2-1/2 (37) Socko,M (2451)
-Javakhishvili,L (2475) Porto Carras 2018}) 13... Bb7 14. Rad1 O-O 15. Ne5 Re8
16. Qf3 Nc6 ({Better is} 16... Qd6 $15) 17. Nxc6 $1 $11 Bxc6 18. d5 exd5 19. e5
$1 {[%cal Re5f6]} Nd7 (19... Ne4 $1 $11 {keeps the balance.}) 20. Nxd5 $16 {
And now e6! would win.} Bf8 {[#]} 21. Nf6+ $1 Qxf6 22. Qxf6 gxf6 (22... Nxf6
$16 {was called for.} 23. Bxc6 Re6) 23. Bxc6 $18 Nxe5 24. Bxe8 Rxe8 25. f4 Ng4
(25... Nc6 $16 26. Rfe1 (26. Bxf6 Re6 $16) 26... Re6) 26. Rfe1 Bc5+ {[#]} 27.
Kg2 $1 Rxe1 28. Rxe1 {KRB-KBN} a5 (28... Kg7 $142 29. Rc1 Bd6) 29. h3 Ne3+ 30.
Kf3 Nd5 31. Rd1 Nb6 32. Bxf6 Bd6 33. Bd8 {Weighted Error Value: White=0.04/
Black=0.28} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.51"]
[White "Goryachkina, Aleksandra"]
[Black "Meshkovs, Nikita"]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "2602"]
[BlackElo "2550"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,113,15,15,12,25,15,15,19,32,31,22,14,15,16,6,0,0,0,0,-21,-7,-25,-28,
-76,-51,-76,-7,-28,0,-39,-35,-30,-29,-33,0,0,35,0,0,0,0,-78,-90,-84,-80,-103,
-103,-103,-105,-134,-63,-67,-65,-92,-90,-80,-82,-102,-82,-77,-75,-50,-66,-95,
-96,-86,-102,-91,-89,-89,-87,-85,-83,-83,-8,-8,-8,-8,0,0,-5,-5,0,0,0,0,0,0,0,
-22,-22,-23,-24,-24,-31,-52,-15,-10,0,0,0,0,0,0,0,0]} 1. c4 e6 2. Nc3 d5 3. d4
a6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 {D31: Queen's Gambit Declined: Semi-Slav
without ...Nf6 (+ Marshall Gambit and Noteboom) and Exchange Variation lines
without ...Nf6.} Bd6 7. Bg5 $1 {[%mdl 4] is recently more successful than 7.
Bxd6.} c6 8. Bd3 Nbd7 {[%cal Bb8d7,Bd7f8,Bf8g6,Bg6f4][%mdl 32]} 9. Nge2 O-O {
[#]} 10. h3 $146 ({Predecessor:} 10. f3 Re8 11. Qd2 h6 12. Bh4 Ne4 13. Bxd8
Nxd2 14. Bh4 Nc4 15. Bxc4 dxc4 16. e4 {1-0 (49) Materia,M (2315)-Ronka,E (2324)
Chess.com INT 2021}) 10... Re8 11. Qc2 Nf8 12. Bf4 Bxf4 13. Nxf4 Ng6 14. O-O-O
Nxf4 15. exf4 Qd6 16. Ne2 Ne4 17. Rhf1 h6 (17... Qh6 $17) 18. Kb1 $11 Qf6 19.
f3 Nd6 {aiming for ...Nf5.} 20. g4 Bd7 $36 {[%mdl 2048] Black is pushing.} 21.
Qc1 Qe7 22. f5 Qe3 23. Qc5 Rad8 24. Ng3 ({Reject} 24. Qxd6 Bxf5 $1 {[%mdl 512]}
25. Qa3 Bxd3+ 26. Qxd3 Qxd3+ 27. Rxd3 Rxe2 $17) 24... Nb5 25. Bxb5 (25. Ne2 $11
) 25... cxb5 $17 26. Qb4 {[#]} b6 $1 27. Qe1 b4 28. Qxe3 Rxe3 29. Rde1 {[#]}
Rde8 (29... Rd3 $1 $17 30. Rd1 Bb5) 30. Rxe3 $15 Rxe3 {[%mdl 4096] Endgame
KRB-KRN} 31. Kc2 Bb5 32. Rf2 Kf8 33. h4 Re1 34. b3 Ra1 35. Kb2 Rd1 36. Nh5 Rxd4
37. Kc2 g6 38. fxg6 fxg6 39. Ng3 Kf7 40. h5 gxh5 41. Nxh5 Bd3+ (41... a5 $17)
42. Kd2 $11 {Ke3 is the strong threat.} Bg6+ 43. Ke3 Rd1 44. Ng3 d4+ 45. Kf4
Bb1 (45... a5 {with more complications.} 46. Nf5 h5 47. gxh5 Bxh5 48. Rc2 d3)
46. Nf5 Bxf5 47. Kxf5 {KR-KR} a5 48. Rh2 d3 49. Kf4 (49. Ke4 {is more complex.}
Kg6 50. Ke3 Rf1 51. Rd2 h5 52. gxh5+ Kxh5 53. Rxd3 Ra1 54. Rd2) 49... Re1 50.
Rd2 Re2 51. Rxd3 Rxa2 {Hoping for ...Ra3.} 52. Ke5 Ke7 53. f4 {The position is
equal.} a4 54. bxa4 Rxa4 55. Rh3 Ra5+ 56. Kd4 Rb5 57. Kc4 {Weighted Error
Value: White=0.10/Black=0.11} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.52"]
[White "Georgiev, Kiril"]
[Black "Miezis, Normunds"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2577"]
[BlackElo "2467"]
[Annotator "TA"]
[PlyCount "191"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,191,17,7,31,22,31,43,37,25,32,25,17,19,25,21,14,15,18,21,13,10,13,0,
0,0,20,0,0,0,0,0,0,0,0,-31,-22,-172,-165,-152,-127,-127,-119,-97,-59,-137,-144,
-145,-134,-117,-118,-292,-281,-522,-446,-415,-293,-365,4,16,16,-220,-71,-87,
-78,-86,-75,-82,-73,-75,-54,-44,-68,-127,-125,-117,-85,-70,-45,-41,0,0,0,-29,0,
0,0,0,0,0,0,0,0,0,0,0,8,0,18,0,0,0,22,22,116,77,111,68,115,114,115,122,110,114,
165,160,154,0,150,83,83,75,90,75,75,75,75,75,75,0,75,72,75,75,75,75,94,94,81,
80,150,149,233,173,5685,5766,4906,5704,5134,1130,6131,6131,5408,4902,29967,
29970,29969,29970,29974,29964,29968,29971,29982,29983,29983,29984,29984,29983,
29986,29987,29987,29988,29988,29988,29988,29989,29993,29994,29994,29994,29995,
29995,29996,29995]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 a5 5. Nc3 O-O 6. Bg5
d5 {E11: Bogo-Indian.} 7. e3 h6 8. Bh4 Be7 {[#] White is slightly better.} 9.
Bd3 $146 ({Predecessor:} 9. Be2 c6 10. O-O Na6 11. Rc1 dxc4 12. Bxc4 Bd7 13. a4
Nd5 14. Bxe7 Qxe7 15. e4 Ndc7 16. Qe2 {1-0 (28) Joppien,A (2096)-Zielke,B Kiel
2000}) 9... c5 10. dxc5 (10. O-O {feels hotter.} cxd4 11. Nxd4 Nc6 12. Ndb5 Nb4
13. Be2) 10... Na6 11. cxd5 Nxc5 12. Bxf6 Bxf6 13. Bc4 exd5 14. Nxd5 Bxb2 15.
Rb1 Ba3 16. Qd4 Bf5 17. Rb5 Rc8 {Hoping for ...Bd7.} 18. O-O Bd7 19. Rbb1 Bf5 {
White must now prevent ...Ne6.} 20. Rbd1 Ne6 21. Qc3 {[%cal Rc3a3]} Bd6 22. Qb3
Be4 23. Rfe1 (23. Ne1 $1 $11 {and White has nothing to worry.}) 23... Bxf3 24.
gxf3 Qg5+ 25. Kf1 Bxh2 26. Ke2 Rfe8 27. Rh1 ({White should try} 27. Bb5 $1 $15
Red8 28. Nb6) 27... Qg2 $17 28. Bb5 Bg3 $1 29. Rhf1 Ng5 $1 $36 {[%mdl 2048]
Black is on the roll.} 30. e4 $2 (30. Bxe8 $17 {was the only defense.} Rxe8 31.
e4) 30... Re5 $19 31. Bd7 $2 {[#]} (31. Qe3 {was forced.} Nxe4 32. fxe4 Rxe4
33. Bd7 (33. Ne7+ $2 Kh8 $19)) 31... a4 $1 {[%mdl 512]} 32. Qd3 (32. Bxa4 b5)
32... Rd8 33. Qe3 Nxe4 $2 (33... Rxd7 $19 34. Rg1 Qxf2+ $1 {[%mdl 512]} 35.
Qxf2 Bxf2) 34. fxe4 $11 Rxe4 {[#]} 35. Bf5 (35. Bh3 $1 $11 {and White stays
safe.} Rxe3+ 36. Nxe3 {[%mdl 64] Discovered Attack} Rd2+ 37. Rxd2 Qxh3 38. Rd8+
(38. fxg3 Qxg3 39. Rd8+ Kh7 $14) 38... Kh7 39. fxg3) 35... Rde8 (35... Rxe3+
$19 36. Nxe3 Re8) 36. Bxe4 $17 Rxe4 37. Kd3 Rxe3+ 38. Nxe3 Qh2 39. fxg3 Qxa2
40. Rb1 Qe6 {[%mdl 1024] Black has compensation.} 41. g4 (41. Rf5 $15) 41... a3
42. Rfc1 b5 {Threatens to win with ...Qd6+.} 43. Rb4 a2 {aiming for ...Qd6+.}
44. Nc2 $1 Qc6 45. Ra1 Kh7 46. Kd2 Qc5 47. Kc1 f5 48. gxf5 Qxf5 49. Rxa2 Qf1+
50. Kb2 Qf6+ 51. Rd4 h5 52. Ra5 Qe5 53. Ra3 Kh6 54. Ra6+ g6 55. Rad6 b4 56. Kb3
Qc5 (56... Qg3+ $11 {keeps the balance.} 57. Rd3 (57. Kxb4 h4 $14) 57... Qf4)
57. Nxb4 $16 Qb5 58. R6d5 Qf1 59. Nd3 Qd1+ 60. Kc3 Qf3 61. Rd6 Qe3 (61... Kh7
$16 {might work better.} 62. Kc4 Qf7+ 63. Kc5 Qc7+ 64. Kd5 Qa5+ 65. Ke6 Qf5+
66. Ke7 Kg7) 62. Kc4 $18 Qe2 63. Kc3 {Rxg6+! is the strong threat.} Qe3 $1 64.
Rf4 (64. Kb4 $142 $1) 64... Qg3 $16 65. Rdd4 Kg5 66. Kd2 Kh6 67. Rfe4 Qg2+ 68.
Kc3 Qg3 69. Kd2 Qg2+ $1 70. Ke3 Qg5+ 71. Nf4 Qg1+ 72. Ke2 Qh2+ 73. Kd3 Qg3+ 74.
Kc4 Qf2 (74... Qa3 $142) 75. Re6 $1 {[%cal Re6g6]} Qf1+ (75... Qc2+ $16 {
was necessary.} 76. Kb5 Qb2+ 77. Rb4 Qg7 78. Rxg6+ Qxg6) 76. Kc5 $18 Qc1+ $2 (
76... Kg5 77. Rxg6+ Kf5 78. Rd5+ Ke4 79. Re6+ Kf3 80. Nxh5 Qf2+ 81. Kd6 Qb6+
82. Ke5 Qb3) 77. Kd5 Kg5 78. Rxg6+ Kf5 79. Rh6 Qb1 80. Rxh5+ Kg4 81. Kc6 Qa1 {
[#]} 82. Rhd5 $1 {White mates.} Qa8+ 83. Kd7 Qb7+ 84. Kd8 Qa8+ {[#]} 85. Ke7 $1
Qa7+ 86. Kf6 Qa6+ 87. Ne6+ Kf3 88. Rd3+ Ke2 89. Ke5 Qa1+ 90. Kf5 Qb1 91. Nf4+
Kf2 92. Re5 Kf1 93. Kg4 Qa1 94. Re7 Qb1 95. Rf3+ Kg1 96. Nd3 {A wild game. 
Weighted Error Value: White=0.25/Black=0.27} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.53"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Vokhidov, Shamsiddin"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2484"]
[BlackElo "2521"]
[Annotator "ChessBase"]
[PlyCount "102"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:02:51]} c5 {[%emt 0:00:05]} 2. c3 {[%emt 0:00:05]} Nf6 {[%emt 0:
03:06]} 3. e5 {[%emt 0:00:08]} Nd5 {[%emt 0:00:02]} 4. d4 {[%emt 0:00:07]} cxd4
{[%emt 0:00:04]} 5. Qxd4 {[%emt 0:00:05]} e6 {[%emt 0:00:15]} 6. Bc4 {[%emt 0:
00:19]} Nc6 {[%emt 0:00:05]} 7. Qe4 {[%emt 0:00:04]} d6 {[%emt 0:04:44]} 8.
exd6 {[%emt 0:01:27]} Nf6 {[%emt 0:01:04]} 9. Qe2 {[%emt 0:02:57]} Bxd6 {
[%emt 0:00:07]} 10. Nf3 {[%emt 0:00:04]} Qc7 {[%emt 0:01:08]} 11. Nbd2 {
[%emt 0:02:45]} Bd7 {[%emt 0:00:31]} 12. Bb3 {[%emt 0:16:57]} Na5 {[%emt 0:10:
01]} 13. Bc2 {[%emt 0:13:29]} a6 {[%emt 0:02:50]} 14. a4 {[%emt 0:01:45]} h6 {
[%emt 0:09:13]} 15. O-O {[%emt 0:05:28]} O-O {[%emt 0:07:36]} 16. Re1 {[%emt 0:
09:06]} Nd5 {[%emt 0:13:44]} 17. Ne5 {[%emt 0:06:00]} Be8 {[%emt 0:00:05]} 18.
Ndf3 {[%emt 0:01:31]} Rd8 {[%emt 0:02:52]} 19. Qe4 {[%emt 0:09:25]} f5 {
[%emt 0:01:30]} 20. Qh4 {[%emt 0:00:39]} Rf6 {[%emt 0:02:44]} 21. g4 {[%emt 0:
06:43]} Nc6 {[%emt 0:07:08]} 22. Nxc6 {[%emt 0:07:34]} Bxc6 {[%emt 0:00:27]}
23. Nd4 {[%emt 0:00:08]} fxg4 {[%emt 0:05:02]} 24. Nxc6 {[%emt 0:19:32]} bxc6 {
[%emt 0:00:43]} 25. Qxg4 {[%emt 0:00:20]} Bxh2+ {[%emt 0:03:42]} 26. Kh1 {
[%emt 0:00:34]} Qf7 {[%emt 0:02:17]} 27. Be3 {[%emt 0:01:45]} Nxe3 {[%emt 0:02:
06]} 28. Rxe3 {[%emt 0:00:38]} Rxf2 {[%emt 0:00:11]} 29. Bg6 {[%emt 0:01:16]}
Rf1+ {[%emt 0:00:24]} 30. Kxh2 {[%emt 0:00:35]} Qf2+ {[%emt 0:00:24]} 31. Qg2 {
[%emt 0:00:13]} Qxg2+ {[%emt 0:01:01]} 32. Kxg2 {[%emt 0:00:06]} Rxa1 {[%emt 0:
00:02]} 33. Rxe6 {[%emt 0:00:11]} Rxa4 {[%emt 0:02:50]} 34. Rxc6 {[%emt 0:00:
11]} a5 {[%emt 0:00:08]} 35. Kf3 {[%emt 0:02:13]} Ra1 {[%emt 0:00:23]} 36. Ke2
{[%emt 0:00:25]} a4 {[%emt 0:00:19]} 37. Rb6 {[%emt 0:00:12]} a3 {[%emt 0:00:
20]} 38. bxa3 {[%emt 0:00:06]} Rxa3 {[%emt 0:00:04]} 39. c4 {[%emt 0:00:19]}
Ra5 {[%emt 0:00:57]} 40. Rc6 {[%emt 0:00:28]} Re5+ {[%emt 0:00:15]} 41. Kf3 {
[%emt 0:50:05]} Rf8+ {[%emt 0:50:10]} 42. Kg3 {[%emt 0:00:20]} Rg5+ {[%emt 0:
00:17]} 43. Kh2 {[%emt 0:00:14]} Rf2+ {[%emt 0:00:42]} 44. Kh3 {[%emt 0:00:13]}
Rf3+ {[%emt 0:00:14]} 45. Kh2 {[%emt 0:00:06]} h5 {[%emt 0:03:40]} 46. c5 {
[%emt 0:00:37]} h4 {[%emt 0:00:22]} 47. Rc8+ {[%emt 0:00:34]} Rf8 {[%emt 0:00:
02]} 48. Rc6 {[%emt 0:00:10]} Rg3 {[%emt 0:00:34]} 49. Re6 {[%emt 0:01:07]} Rc3
{[%emt 0:00:38]} 50. c6 {[%emt 0:00:26]} Rd8 {[%emt 0:01:31]} 51. Kg1 {[%emt 0:
00:00]} h3 {[%emt 0:00:00]} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.05"]
[Round "9.54"]
[White "Morovic Fernandez, Ivan"]
[Black "Budisavljevic, Luka"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "2510"]
[BlackElo "2508"]
[Annotator "ChessBase"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:12]} c5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:04]} e6 {[%emt 0:
00:04]} 3. d4 {[%emt 0:00:06]} cxd4 {[%emt 0:00:05]} 4. Nxd4 {[%emt 0:00:04]}
Nc6 {[%emt 0:00:05]} 5. Nc3 {[%emt 0:00:12]} Qc7 {[%emt 0:00:06]} 6. Be3 {
[%emt 0:00:53]} a6 {[%emt 0:00:05]} 7. Qf3 {[%emt 0:02:33]} Bd6 {[%emt 0:00:31]
} 8. O-O-O {[%emt 0:01:08]} Be5 {[%emt 0:00:08]} 9. Nxc6 {[%emt 0:06:49]} bxc6
{[%emt 0:00:04]} 10. Bd4 {[%emt 0:00:03]} Bxd4 {[%emt 0:00:30]} 11. Rxd4 {
[%emt 0:00:05]} Nf6 {[%emt 0:00:04]} 12. Qg3 {[%emt 0:14:04]} Qxg3 {[%emt 0:00:
06]} 13. hxg3 {[%emt 0:00:03]} d5 {[%emt 0:00:04]} 14. Bd3 {[%emt 0:09:23]} h6
{[%emt 0:05:44]} 15. Re1 {[%emt 0:07:44]} O-O {[%emt 0:03:22]} 16. Na4 {
[%emt 0:09:00]} a5 {[%emt 0:10:40]} 17. Nb6 {[%emt 0:13:40]} Ra7 {[%emt 0:06:
22]} 18. Ra4 {[%emt 0:03:54]} Nd7 {[%emt 0:03:53]} 19. Nxd7 {[%emt 0:00:48]}
Bxd7 {[%emt 0:00:07]} 20. Ra3 {[%emt 0:02:55]} Rb8 {[%emt 0:07:38]} 21. Rb3 {
[%emt 0:04:44]} Rxb3 {[%emt 0:16:44]} 22. axb3 {[%emt 0:02:56]} Kf8 {[%emt 0:
01:15]} 23. Kd2 {[%emt 0:01:09]} Ke7 {[%emt 0:00:08]} 24. exd5 {[%emt 0:07:51]}
cxd5 {[%emt 0:00:34]} 25. Ra1 {[%emt 0:00:02]} Kd6 {[%emt 0:04:10]} 26. c3 {
[%emt 0:11:24]} Kc7 {[%emt 0:04:54]} 27. b4 {[%emt 0:01:54]} Kb6 {[%emt 0:08:
15]} 28. bxa5+ {[%emt 0:01:02]} Rxa5 {[%emt 0:00:02]} 29. Rxa5 {[%emt 0:01:34]}
Kxa5 {[%emt 0:00:02]} 30. Ke3 {[%emt 0:01:04]} e5 {[%emt 0:04:59]} 31. f4 {
[%emt 0:01:39]} f6 {[%emt 0:00:24]} 32. Be2 {[%emt 0:04:27]} Kb6 {[%emt 0:15:
17]} 33. fxe5 {[%emt 0:00:04]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.1"]
[White "Firouzja, Alireza"]
[Black "Howell, David W L"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2770"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,113,19,16,16,6,6,10,24,22,19,23,24,23,26,24,23,27,22,20,44,0,0,0,0,0,
12,0,3,0,14,33,39,0,22,0,30,35,36,13,91,86,132,104,104,102,103,108,100,52,60,
48,100,97,106,109,91,99,158,156,162,162,154,154,158,151,169,154,180,194,222,
162,289,204,204,189,318,312,306,304,374,312,381,289,485,485,483,478,469,462,
476,454,609,602,594,566,789,765,807,773,600,600]} 1. e4 e5 2. Nf3 Nc6 3. Bc4
Bc5 4. O-O Nf6 5. d3 h6 6. c3 d6 7. Re1 O-O 8. h3 a5 {outshines the older 8...
a6. C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 9. Nbd2 {
[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} Be6 10. Bb5 Ba7 {The position is equal.} 11.
Nf1 Ne7 12. Ng3 $5 {[%mdl 4] Leaves trodden paths.} c6 13. Ba4 b5 14. Bc2 a4
15. d4 Ng6 {[#]} 16. Be3 $146 ({Predecessor:} 16. b3) 16... Re8 17. Bd3 Bb6 18.
a3 Qc7 19. Rc1 Ba5 20. Re2 Qb7 21. c4 bxc4 22. Bxc4 d5 23. Bd3 exd4 24. Nxd4
Bd7 {[%cal Rd5e4]} 25. Ndf5 {Threatens to win with Nd6.} (25. Qxa4 c5 $17)
25... Bc7 26. exd5 cxd5 (26... Nxd5 $11 {keeps the balance.} 27. Bd4 Ndf4) 27.
Bd4 $16 {Nxg7! is the strong threat.} Be5 {[#]} 28. Nxh6+ $1 {[%mdl 512]} gxh6
29. Bxg6 Bxg3 30. Rxe8+ ({Worse is} 30. fxg3 fxg6 31. Rxe8+ (31. Bxf6 $2 Rxe2
32. Qxe2 Qb6+ {[%mdl 64] Double Attack} 33. Kh2 Qxf6 $19) 31... Nxe8 $15) 30...
Rxe8 {[#]} 31. Qf3 $1 Qc6 {[%cal Rc6c1]} 32. Bc2 $1 $40 {[%mdl 128] White
mounts an attack.} Bb8 {Black is now going downhill.} ({Black should try} 32...
Be5 $14 33. Bh7+ {[%mdl 64] Discovered Attack} Nxh7 34. Rxc6 Bxc6 35. Qg4+ Kh8)
33. Qxf6 Qxf6 34. Bxf6 Rc8 {[#] Strongly threatening ...Bf4.} 35. Bc3 $1 d4 {
[#]} (35... Bd6 $142) 36. Bd2 $1 ({Weaker is} 36. Bxd4 Bf4 $17) 36... Kg7 37.
Bd3 Rxc1+ 38. Bxc1 $18 {[%mdl 4096] Endgame KBB-KBB} h5 39. h4 Bc6 40. g3 Bd7
41. Kf1 Be5 42. Ke2 Bg4+ (42... Bc7 $142 43. Bd2 Bb6) 43. Kd2 Bd7 44. Kc2 Be6 (
44... Bd6 $142 45. b4 axb3+ 46. Kxb3 Be6+ 47. Ka4 Bd7+ 48. Ka5 Bc5) 45. Bb5
Bb3+ 46. Kd3 Kg6 47. Bd7 Bd1 48. Bd2 f5 $2 (48... Bb3 49. Bb4 Bf6) 49. Bf4 {
White is clearly winning.} Bg7 50. Bd6 Bf6 51. Be8+ Kh6 52. Bc5 f4 53. Bxd4 Bd8
54. Kd2 Bb3 55. Be5 fxg3 56. fxg3 Ba5+ 57. Kc1 {Weighted Error Value: White=0.
09/Black=0.28} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.2"]
[White "Vachier-Lagrave, Maxime"]
[Black "Caruana, Fabiano"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2763"]
[BlackElo "2800"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,104,29,22,20,21,10,13,41,16,16,14,28,0,29,4,20,11,15,10,19,12,12,8,6,
0,0,0,0,0,0,0,0,0,0,0,12,12,14,13,13,0,33,47,85,87,81,0,0,0,0,2,27,27,34,34,41,
41,41,44,68,27,68,27,34,34,34,34,34,34,34,34,34,34,34,34,34,6,6,6,6,6,6,6,6,6,
22]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O
8. a4 Bb7 9. d3 d6 10. Bd2 b4 11. c3 Rb8 {C88: Closed Ruy Lopez: Anti-Marshall
Systems.} 12. cxb4 Bc8 13. b5 axb5 14. axb5 Rxb5 15. h3 Rb8 16. Nc3 Be6 17. Nd5
Bxd5 18. Bxd5 Nxd5 19. exd5 Nb4 20. Qb3 c5 {[#]} 21. Ra4 $146 {[%cal Rd2b4]} ({
Predecessor:} 21. dxc6 Nxc6 22. Qc4 Qd7 23. Ra6 Rfc8 24. Qa4 Rb7 25. Rc1 Nb8
26. Rxc8+ Qxc8 27. Ra7 Bf8 28. Rxb7 Qxb7 29. Qe8 Na6 30. Bc3 {1/2-1/2 (30)
Liang,A (2572)-Gledura,B (2621) Saint Louis 2018}) 21... Na6 22. Qa2 Nc7 23.
Ba5 Qd7 {With the idea ...Nxd5!} 24. Bxc7 Qxc7 25. Nd2 Qb7 26. Ra7 Qb4 {
[%cal Rb4d2]} ({Wrong is} 26... Qxb2 $2 27. Qxb2 Rxb2 28. Nc4 $18) 27. Rd1 Rb7
28. Nc4 Rxa7 29. Qxa7 Qb3 30. Re1 Qxd3 (30... Bh4 {is more complex.} 31. Nxd6
Qxd5 32. Nf5 Bd8 33. Ne7+ Bxe7 34. Qxe7 f6) 31. Qxe7 Qxc4 32. Qxd6 Qd4 33. Qxe5
({White should try} 33. Rxe5 $16 Ra8 34. g4) 33... Qxe5 $11 34. Rxe5 $16 {
[%mdl 4096] Endgame KR-KR} f6 $1 {[%cal Rf6e5]} 35. Rf5 Rb8 36. d6 Rxb2 37.
Rxc5 Rd2 38. Rc8+ Kf7 39. Rc7+ Kf8 40. Rd7 g5 41. g3 (41. Rxh7 $5 {[%cal Rd6d7]
} Rxd6 42. g3 $16) 41... h5 42. h4 gxh4 43. gxh4 Ke8 44. Rh7 Rxd6 45. Rxh5 Kf7
46. Kg2 Kg6 47. Ra5 Rd3 48. h5+ Kh6 {The position is equal.} 49. f3 Rd1 50. Kg3
Rg1+ 51. Kf4 Rh1 52. Rf5 Rh4+ {Weighted Error Value: White=0.08/Black=0.05}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.3"]
[White "Vitiugov, Nikita"]
[Black "Oparin, Grigoriy"]
[Result "0-1"]
[ECO "E24"]
[WhiteElo "2727"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,92,-37,-59,26,24,26,10,47,35,56,-16,0,0,0,0,0,0,0,0,0,0,0,-42,-20,
-18,-15,-51,-23,-106,-45,-47,-43,-84,-70,-53,-74,-56,-61,-172,-176,-193,-207,
-210,-215,-352,-332,-353,-296,-341,-336,-316,-331,-326,-326,-293,-303,-377,
-343,-497,-505,-851,-826,-785,-785,-1344,-1035,-1968,-1872,-12841,-12842,
-12843,-12843,-29983,-29984,-29984,-29985,-29984,-12847]} 1. d4 Nf6 2. c4 e6 3.
Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 Nc6 7. e4 d6 8. Be3 b6 9. Bd3 e5 {9...0-0
is not played anymore. E24: Nimzo-Indian: Sämisch: Unusual Black 5th moves and
5...c5 sidelines.} ({Black should try} 9... O-O $15) 10. d5 $11 Na5 11. Ne2 {
[#]} Kd7 $146 {The position is equal.} ({Predecessor:} 11... Ba6 12. Ng3 Qd7
13. Qe2 O-O-O 14. a4 Rdg8 15. h4 g6 16. Kd1 Nh5 17. Nf1 f5 {0-1 (39) Ang,A 
(2195)-Winkelman,A (2283) Melbourne 2019}) 12. O-O Kc7 13. f4 (13. Qc2 $14)
13... Ng4 14. Bd2 exf4 15. Bxf4 {Threatens to win with h3.} f6 16. Nd4 {
aiming for Nb5+.} Ne5 (16... cxd4 $6 17. cxd4 Nb7 18. c5 $16 (18. Qa4 g5 $14))
17. Nb5+ Kb7 18. Bxe5 dxe5 19. d6 Rb8 20. Be2 Be6 21. Nc7 Bf7 ({Avoid the trap
} 21... Bxc4 $2 22. Bxc4 Nxc4 23. Qd5+ Kc8 24. Qxc4 $18) 22. Rb1 (22. Rf3 $11)
22... Qd7 (22... Nxc4 $17 23. Bxc4 (23. Qa4 Nxd6 24. Nd5 Bxd5 $17) 23... Bxc4)
23. Bg4 $15 Qc6 24. Be6 Bxe6 25. Nxe6 Nxc4 {[%mdl 64] Double Attack} 26. Qg4
Rhg8 27. d7 {[#] Black converts the advantage convincingly.} (27. Rfd1 $1 $15)
27... Ne3 $1 $19 {[%cal Re3g4][%mdl 64] Double Attack} 28. Qh3 Nxf1 29. Rxf1
Qxe4 30. Qh5 {[#]} (30. Rd1 $142) 30... Rgd8 $1 31. Rd1 {If only White now had
time for Qf7....} g6 32. Qxh7 {[#] Strongly threatening Qe7.} Qe2 $1 {[%cal
Re2d1]} 33. Rb1 {Hoping for Qe7.} Qc2 {[%mdl 64] Double Attack} 34. Rf1 {
Black must now prevent Qe7.} Qd3 ({Not} 34... Qxc3 35. Qe7 $11) 35. Nxd8+ Rxd8
{[%mdl 4096] Endgame KQR-KQR} 36. Qe7 Rxd7 37. Qxf6 (37. Qe6 $142) 37... Qxc3
38. Qxg6 (38. Qf3+ $142 Qxf3 39. Rxf3) 38... Qe3+ 39. Kh1 c4 40. Qe6 Qd3 {
[%cal Rd3f1]} 41. Kg1 c3 42. Qxe5 c2 43. Rc1 Qd1+ {[%mdl 64] Double Attack} 44.
Kf2 Qd2+ {Black mates.} 45. Kg3 Rd3+ 46. Kh4 Qxg2 {[%csl Gg2][%cal Rd3h3]
Weighted Error Value: White=1.04/Black=0.10} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.4"]
[White "Shirov, Alexei"]
[Black "Yu, Yangyi"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2659"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "128"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,128,0,0,-4,29,16,26,16,22,20,15,16,17,29,18,20,16,12,40,42,49,32,39,
27,42,24,45,0,36,12,10,19,23,26,47,33,45,48,39,8,0,0,18,0,36,37,58,49,86,45,35,
29,22,0,0,0,47,0,0,0,63,-46,-47,-46,-46,-47,-47,-47,-47,-40,0,-88,-51,-177,
-179,-159,-135,-131,-132,-206,-183,-191,-190,-153,-96,-118,0,-125,-118,-104,
-76,-76,-70,-73,-103,-99,-66,-64,-39,-40,-51,-64,-54,-57,-64,-64,-64,-65,-4,-4,
0,0,0,0,0,0,0,0,3,0,3]} 1. e4 c5 2. Nc3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qd2 Nf6 6.
b3 {B23: Closed Sicilian: Lines without g3.} e5 7. Bb2 Be7 8. g3 {[#] White
has an edge.} Nd4 $146 ({Predecessor:} 8... O-O 9. Bg2 Nd4 10. Nge2 Nxe2 11.
Qxe2 Bg4 12. Qd3 Rc8 13. O-O Qc7 14. a4 Qc5 {1-0 (41) Fedoseev,V (2706)-Najer,
E (2667) Sochi 2018}) 9. Bg2 b5 10. Nge2 Nxe2 11. Qxe2 b4 12. Nd1 {[%cal Bc3d1,
Bd1e3,Be3f5][%mdl 32]} a5 13. Ne3 O-O 14. a4 Ba6 15. Qd2 Bb7 16. f3 Qc7 17.
O-O-O Rfd8 18. Nf5 Rac8 19. Bh3 Bf8 {And now ...d5 would win.} 20. Ne3 Ra8 21.
Kb1 g6 22. Rhe1 Bh6 23. Qe2 Ba6 24. Qg2 Bxe3 25. Rxe3 d5 26. Ree1 (26. exd5
Nxd5 27. Ree1 Nc3+ 28. Bxc3 Qxc3 $17) 26... dxe4 27. f4 Bb7 28. Bxe5 Qe7 29.
Kc1 Rxd1+ 30. Rxd1 Nd5 31. Qd2 (31. Qxe4 Nc3 $17) 31... e3 32. Qd3 Rd8 {
[#] Strongly threatening ...e2!} (32... f6 $5 {[%cal Rf6e5]} 33. Bb2 Rd8 $11)
33. Bg4 f6 34. Bb2 Rd6 (34... Kg7 $11 35. Be2 h5) 35. Bf3 (35. Qc4 $1 $14)
35... Kg7 $15 36. Bxd5 Rxd5 37. Qe2 {Threatens to win with Rxd5.} Rxd1+ 38.
Kxd1 {Threatening Bd4.} Qe4 39. Kc1 Ba6 40. Qd1 (40. Bxf6+ $1 $11 {keeps the
balance.} Kg8 41. Qxa6) 40... Qe7 (40... e2 $6 41. Qd7+ Kf8 42. Qd8+ Kf7 43.
Qd7+ (43. Qxf6+ Ke8 $11) 43... Kg8 44. Qd8+ Kf7 45. Qd7+ (45. Qxf6+ Ke8 $11)
45... Kg8 46. Qd8+ Kf7 $11) 41. Bd4 (41. Qg1 $1 $15) 41... e2 $19 42. Qe1 Qe4
43. Bf2 {[#]} Bc8 $1 44. Kd2 (44. Qd2 $17) 44... Bg4 45. h3 Qd5+ ({Weaker is} 
45... Bxh3 46. Qxe2 Qc6 47. Kc1 $11) 46. Ke3 Qe6+ (46... Bf3 $142 {aiming for .
..h5.} 47. c4 Qe4+ 48. Kd2 h5) 47. Kd2 $17 Qd5+ ({Much weaker is} 47... Bxh3 $6
48. Qxe2 Qc6 49. Qe7+ Kh6 50. Bd4 $11) 48. Ke3 $1 Bf5 {( -> ...Qe4+)} 49. Kxe2
Qe4+ 50. Be3 Qxc2+ 51. Qd2 Qxb3 52. g4 Be6 ({Don't play} 52... Qxa4 $6 53. gxf5
gxf5 54. Qd3 $11) 53. Qd6 Qc4+ 54. Kf2 Qa2+ 55. Kg3 Qd5 56. Qe7+ Bf7 57. g5 Qe6
58. gxf6+ Qxf6 ({Better is} 58... Kg8 $1 $15) 59. Qc5 $132 {[%mdl 2048] Black
must now prevent Bd4! White puts up resistance. The position is equal.} Qf5 60.
Qxf5 gxf5 61. Bb6 Kf6 62. Bxa5 b3 63. Bc3+ Ke6 64. Kh4 h6 {Black had all
chances to win.  Weighted Error Value: White=0.14/Black=0.14} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.5"]
[White "Predke, Alexandr"]
[Black "Anton Guijarro, David"]
[Result "1/2-1/2"]
[ECO "D50"]
[WhiteElo "2666"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,84,18,33,13,19,20,37,26,43,12,28,16,24,25,27,10,9,10,16,20,17,0,0,0,0,
0,0,0,0,0,0,0,14,8,10,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,-6,0,-10,0,-8,-8,-8,-8,-8,
-2,-14,0,0,0,0,0,-8,-8,-8,0,-8,-8,-8,-8,-8,-8,-8,-8]} 1. d4 Nf6 2. c4 e6 3. Nc3
d5 4. Bg5 dxc4 5. e3 c5 6. Bxf6 {D50: Queen's Gambit Declined: Dutch-Peruvian
Gambit.} Qxf6 7. d5 a6 8. Nf3 {[#] White is slightly better.} Nd7 $146 ({
Predecessor:} 8... b5 9. a4 b4 10. Ne4 Qf5 11. dxe6 Bxe6 12. Nfd2 c3 13. bxc3
Be7 14. Bd3 O-O {0-1 (61) Plazuelo Pascual,J (2455)-Anton Guijarro,D (2659)
Linares 2021}) 9. dxe6 Qxe6 10. Qa4 Rb8 {With the idea ...b5.} 11. Bxc4 Qf6 {
[#] Hoping for ...b5.} 12. Be2 b5 {The position is equal.} 13. Qe4+ Be7 14. Nd5
Qd6 15. a4 (15. Nxe7 {keeps more tension.} Qxe7 16. Qf4 O-O 17. O-O Rb6 18.
Rac1) 15... bxa4 16. Nxe7 Qxe7 17. Qxa4 Rxb2 18. Bxa6 O-O 19. O-O Nf6 20. Qa3
Rb6 21. Bxc8 Rxc8 22. Rac1 Ne4 23. Rfd1 Rd6 24. Rxd6 Qxd6 25. Qa4 Qd5 (25...
Rd8 {seems wilder.} 26. Qb3 Qf6 27. h3 g6 28. Qc2 Qe6) 26. Qc4 Qxc4 (26... Qf5
{feels hotter.} 27. Qd3 h6 28. h3 Ra8 29. Qb3 g6) 27. Rxc4 $11 {[%mdl 4096]
Endgame KRN-KRN} f5 (27... Rb8 {looks sharper.} 28. g3 f5 29. Nh4 Rb1+ 30. Kg2
g6) 28. Kf1 Kf7 29. Rc2 Ke6 30. Nd2 Kd5 31. Nc4 {[#] And now Nb6+ would win.}
Rb8 32. f3 Nd6 33. Nxd6 Kxd6 {KR-KR} 34. Ke2 g5 35. e4 fxe4 36. fxe4 Rb5 37.
Rd2+ Ke5 38. Rd5+ Kf4 39. Rf5+ Kxe4 40. Rxg5 Rb2+ 41. Kd1 c4 42. Rh5 Rxg2 {
Weighted Error Value: White=0.05/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.6"]
[White "Sevian, Samuel"]
[Black "Sargissian, Gabriel"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2654"]
[BlackElo "2664"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,81,18,16,17,0,17,9,18,5,16,-36,0,-9,9,-27,-29,-104,-112,-143,-78,-70,
-81,-50,-8,-11,-25,-26,-17,-44,-40,-46,-36,-39,-49,-42,-49,-44,-28,-26,-8,-5,0,
0,0,0,0,0,0,-59,-59,-64,-68,-31,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 e6 2. Nc3 d5 3.
d4 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 O-O 9. Nge2 $1 {
[%mdl 4] outshines the older 9.Qc2.} Nbd7 10. Qc2 Re8 {D36: Queen's Gambit
Declined: Exchange Variation: Main line (5 Bg5 c6 6 Qc2).} 11. a3 a5 12. f3 b5
13. O-O {[#]} Ba6 $146 ({Predecessor:} 13... Bb7 14. Rae1 b4 15. Nb1 Qb6 16.
Bf2 c5 17. axb4 axb4 18. dxc5 Bxc5 19. e4 Bxf2+ 20. Rxf2 dxe4 21. fxe4 {
0-1 (28) Ahardan,D (1888)-Salgado Lopez,I (2599) Lichess.org INT 2021}) 14. e4
(14. Bf2 $11) 14... Qb6 15. exd5 cxd5 16. Bxf6 (16. Bf2 {looks sharper.} b4 17.
axb4 Bxd3 18. Qxd3 Bxb4 19. Na4) 16... Nxf6 17. Qb3 (17. b4 $11 {remains equal.
}) 17... b4 $17 18. Bxa6 Qxa6 (18... a4 $142 $1 {[%cal Ra4b3]} 19. Qc2 bxc3)
19. axb4 Bxb4 20. Nf4 Qc4 (20... Rab8 {is interesting.} 21. Nfxd5 Nxd5 22. Qxd5
Bxc3 23. bxc3 a4) 21. Qxc4 dxc4 22. Nfe2 Re3 23. Rfc1 Rd3 24. Rd1 Rd8 25. Kf2
g6 26. Na4 Nd5 27. Rxd3 cxd3 28. Nec3 Nf4 29. g3 Ne6 30. d5 Nc5 31. Nxc5 Bxc5+
$11 {[%mdl 4096] Endgame KRB-KRN} 32. Ke1 Bb4 33. Ra4 (33. Kd1 $11) 33... Re8+
$1 $15 34. Kd2 Re2+ $1 35. Kxd3 Rxb2 {[#] Strongly threatening ...Rb3.} 36. Na2
$1 {[%cal Ra2b4] The position is equal.} Bd6 37. Rxa5 Rxh2 38. g4 Rf2 39. Ke3
Rc2 40. Kd3 Rf2 41. Ke3 {Weighted Error Value: White=0.14/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.7"]
[White "Esipenko, Andrey"]
[Black "Sasikiran, Krishnan"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2720"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,71,0,14,4,27,1,19,19,24,22,44,47,54,45,51,42,52,46,58,34,39,35,76,72,
79,77,100,61,89,84,103,98,108,105,116,125,131,95,115,116,131,100,148,147,237,
243,236,210,238,227,216,227,260,261,258,252,470,329,525,528,1223,1188,2784,
2230]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bf4 {D38:
Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} O-O 7. e3 c6 8. Bd3 {
The position is equal.} Bg4 9. Qb3 Qb6 10. Ne5 {[#]} Be6 $146 ({Predecessor:} 
10... Bh5 11. O-O Be7 12. Qc2 Bg6 13. Nxg6 hxg6 14. Na4 Qd8 15. Nc5 Bxc5 16.
Qxc5 Nbd7 {1-0 (33) Tran,T (2526)-Nguyen,V (2456) Ho Chi Minh City 2019}) 11.
O-O {[#] Na4 is the strong threat.} Be7 12. Qc2 Nbd7 13. h3 g6 14. Bg5 Rfe8 15.
f4 Nxe5 16. fxe5 Nd7 17. Bxe7 Rxe7 18. Na4 Qd8 19. Rf4 Rc8 20. Qf2 c5 21. Rf1
cxd4 22. exd4 Nf8 23. Nc5 Qe8 24. h4 b6 25. Nb3 Bd7 26. h5 Bb5 (26... Ne6 $16 {
might work better.}) 27. Bxb5 $18 Qxb5 28. Rxf7 Qxf1+ 29. Qxf1 Rxf7 30. Qb5 Rd8
31. h6 Ne6 32. Qc6 Nf4 (32... Re7 {was worth a try.} 33. a4 Nf8) 33. Kh2 Rdf8 (
33... Ne2 $142 34. e6 Re7) 34. g3 {White is clearly winning.} Ne2 {[#]
Strongly threatening ...Rf2+.} 35. Qxd5 Kh8 36. e6 {Weighted Error Value:
White=0.11/Black=0.32} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.8"]
[White "Sjugirov, Sanan"]
[Black "Harikrishna, Pentala"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2663"]
[BlackElo "2719"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,71,14,22,20,25,20,20,16,16,16,25,4,22,0,0,6,5,0,0,-17,0,-12,27,14,39,
27,28,26,60,62,76,19,19,15,17,17,21,16,44,13,13,17,11,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 b5 7. Bb3 d6
8. a4 Bd7 $1 {The main line 8...Bd7 scores better than 8...b4.} 9. c3 {C84:
Closed Ruy Lopez: Unusual White 6th moves.} O-O 10. Bc2 Re8 11. Re1 h6 12. Nbd2
{[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32]} b4 13. Nf1 Bf8 14. Ng3 {[#]} Rb8 $146 ({
Predecessor:} 14... bxc3 15. bxc3 d5 16. exd5 Nxd5 17. Bd2 Rb8 18. a5 Nf6 19.
Ba4 Bd6 20. h3 Na7 {1-0 (43) So,W (2772)-Le,Q (2709) chess24.com INT 2021}) 15.
d4 Na5 16. Bd2 Nc4 17. cxb4 exd4 18. Nxd4 d5 (18... Nxb2 {is more complex.} 19.
Qf3 c5 20. Qb3 Nxa4 21. Ndf5 g6) 19. Bc3 {Threatening b3.} Bxb4 {[#] Hoping
for ...Nxb2!} 20. exd5 Bxc3 21. bxc3 Rxe1+ 22. Qxe1 Nb6 23. Nc6 (23. Qe2 $16)
23... Bxc6 $11 24. dxc6 Nbd5 25. Bd3 Rb6 26. Qd2 Qe8 27. Re1 (27. Bc4 $5 {
[%cal Rc4d5]} Qxc6 {[#]} 28. a5 $1 $14) 27... Qxc6 {The position is equal.} 28.
c4 Nb4 29. Bb1 {Threatening mate with Qd8+.} Rb8 30. Nf5 Qxc4 31. Nxh6+ gxh6
32. Qxh6 {White threatens Qg5+ and mate.} Nbd5 {Threatens to win with ...Qf4.}
33. Qg5+ Kf8 34. Qh6+ Kg8 35. Qg5+ Kf8 {aiming for ...Qf4.} 36. Qh6+ {Weighted
Error Value: White=0.09/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.9"]
[White "Dubov, Daniil"]
[Black "Kryvoruchko, Yuriy"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2714"]
[BlackElo "2686"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,64,10,2,3,25,0,0,10,4,8,4,0,21,14,25,-10,8,11,9,0,0,0,0,0,8,8,5,4,4,
4,1,1,3,2,1,0,0,0,4,4,8,8,8,8,8,16,80,3,4,4,5,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3
d5 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qc2 b5 8. a4 {E05: Open Catalan: 5 Nf3
Be7.} b4 9. Nbd2 Bb7 10. Nxc4 c5 11. dxc5 Be4 12. Qd2 Bxc5 13. Nfe5 Bxg2 14.
Kxg2 Nbd7 15. Nxd7 Nxd7 {[#]} 16. Rd1 $146 ({Predecessor:} 16. b3 Nb6 17. Qxd8
Rfxd8 18. Nxb6 Bxb6 19. a5 Bd4 20. Ra4 a6 21. Rxb4 Bc3 22. Rc4 Bxa5 {1/2-1/2 
(32) Dubov,D (2690)-Nakamura,H (2761) Moscow 2019}) 16... Nb6 17. Qxd8 Rfxd8
18. Nxb6 Bxb6 19. Bf4 f6 20. Rxd8+ Rxd8 $11 {[%mdl 4096] Endgame KRB-KRB} 21.
a5 Bd4 22. Rd1 e5 23. Be3 Rd5 24. Bxd4 exd4 {KR-KR} 25. a6 Kf7 26. Rc1 {
Threatens to win with Rc7+.} d3 27. exd3 Rxd3 28. Rc7+ {[%mdl 64] Double Attack
} Kg6 $1 29. Rxa7 Rd2 $1 {[#]} 30. Rb7 ({White should play} 30. Kf3 $1 $16)
30... Rxb2 {The position is equal.} 31. a7 Ra2 32. Rxb4 {aiming for Rb7.} Rxa7
{Weighted Error Value: White=0.06/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.10"]
[White "Keymer, Vincent"]
[Black "Alekseenko, Kirill"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2630"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,51,7,16,19,24,21,29,12,37,11,25,11,11,14,34,33,30,34,44,33,43,30,65,
66,93,17,133,125,244,234,244,252,549,531,629,612,602,607,663,608,714,677]} 1.
d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+ Nc6 6. e3 O-O 7. Qc2 {D38:
Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} Re8 8. Bd2 h6 9. Rd1 {
White has an edge.} (9. a3 $5 {[%cal Ra3b4]} Bf8 10. Be2 $14) 9... Bf8 {[#]}
10. Be2 $146 ({Predecessor:} 10. Bc1 a6 11. b3 Qe7 12. Bb2 dxc4 13. Bxc4 b5 14.
Be2 Bb7 15. O-O e5 16. Nxe5 Nxe5 17. dxe5 Qxe5 {1-0 (22) Weichselbaumer,
E-Benkner,O Saarbruecken 1950}) 10... a6 11. a3 dxc4 12. Bxc4 b5 13. Bd3 Bb7
14. Ne4 Nd7 15. Ng3 Ne7 16. b4 f5 17. O-O Nf6 18. Rfe1 ({White should try} 18.
Ne5 $16) 18... Nc8 (18... Bxf3 $11 19. gxf3 Ng6) 19. Ne5 Bd6 (19... h5 $16 {
keeps fighting.} 20. f3 Nd6) 20. e4 $18 fxe4 21. Nxe4 Bxe5 $2 (21... Bxe4 22.
Bxe4 Nxe4) 22. dxe5 {White is clearly winning.} Nxe4 23. Bxe4 Bxe4 24. Rxe4 h5
{[#]} 25. Bh6 $1 {[%mdl 512]} Qe7 {[#]} (25... Nd6 26. Re3) 26. Re3 $1 {
Weighted Error Value: White=0.12/Black=0.47} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.11"]
[White "Fedoseev, Vladimir"]
[Black "Nihal Sarin"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2704"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,59,0,4,18,16,8,22,17,10,14,19,10,25,10,11,29,21,14,22,22,22,14,22,15,
34,29,33,28,42,0,0,0,0,0,0,0,26,0,16,0,0,0,0,0,0,0,0,0,0,0,-9,-1]} 1. e4 e5 2.
Nf3 Nf6 3. Nxe5 d6 4. Nd3 Nxe4 5. Nf4 Nf6 6. d4 {[#] C42: Petroff Defence: 3
Nxe5 and unusual White 3rd moves.} d5 $146 ({Predecessor:} 6... Be7 7. Nc3 a6
8. Be3 d5 9. Be2 Bb4 10. O-O Bxc3 11. bxc3 Ne4 12. Qe1 Bf5 {0-1 (44) Stinkova,
A-Zimmermann,L Klatovy 2013}) 7. Bd3 Be7 8. h3 O-O 9. O-O Re8 10. Be3 Nc6 {
[%cal Bb8c6,Bc6e7,Be7g6,Bg6f8][%mdl 32]} 11. c3 Bd6 12. Qf3 Ne7 13. Nd2 c6 14.
Rfe1 Ng6 15. Nh5 Nxh5 16. Qxh5 Bd7 17. Nf3 {[#] aiming for Ng5.} Nf8 18. Bd2 f6
19. c4 Be6 20. c5 Bc7 21. Nh4 Qd7 22. Qf3 Bf7 23. Nf5 (23. Be3 {looks sharper.}
b6 24. b4 a5 25. a3 Ne6 26. Nf5) 23... Bg6 {The position is equal.} 24. h4 Bxf5
25. Bxf5 Qf7 26. h5 g6 27. hxg6 hxg6 28. Qg4 Qg7 29. Be6+ Rxe6 30. Rxe6 {
Weighted Error Value: White=0.04/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.12"]
[White "Maghsoodloo, Parham"]
[Black "Deac, Bogdan-Daniel"]
[Result "0-1"]
[ECO "A33"]
[WhiteElo "2701"]
[BlackElo "2643"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,102,10,27,28,16,16,14,-9,-7,0,-28,-22,-11,-7,0,6,18,16,2,10,10,0,0,
-24,-9,-8,-12,-34,-11,-28,-25,-24,0,0,0,-41,-49,-50,-52,-48,-44,-77,-64,-129,
-81,-125,-99,-153,-152,-150,-104,-100,-96,-139,-125,-130,-115,-124,-110,-122,
-78,-85,-10,-35,-10,-9,-8,-23,-28,-279,-279,-270,-246,-470,-456,-893,-706,
-2595,-2027,-1730,-1798,-1910,-1895,-29973,-29975,-29973,-29972,-29975,-29976,
-29937,-6041,-4134,-1754]} 1. c4 e6 2. Nc3 c5 3. Nf3 Nf6 4. d4 cxd4 5. Nxd4 Nc6
6. a3 Bc5 7. Nb3 {A33: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6 5
Nc3 Nc6.} Bb6 8. c5 Bc7 9. Nb5 {The position is equal.} O-O 10. Nxc7 Qxc7 11.
g3 a5 {[#]} 12. Bg2 $146 ({Predecessor:} 12. Bf4 e5 13. Bg5 Ne4 14. Be3 a4 15.
Nd2 Qa5 16. Bg2 Nxc5 17. O-O Qb5 18. Bxc5 Qxc5 {1-0 (38) Fries,F (2170)-Fink,C
(2146) Germany 2015}) 12... a4 13. Nd4 Qe5 14. Be3 Ng4 15. Nxc6 dxc6 16. Qd4
Qf5 17. Be4 Qh5 18. h3 {[#]} e5 $1 19. Qd3 (19. Qc3 Nxe3) 19... Nxe3 20. Qxe3
f5 21. Bd3 Re8 22. O-O-O Qf7 23. Kb1 Qb3 24. Bc2 Qxe3 25. fxe3 Ra5 26. Rc1 Be6
27. h4 (27. g4 $15) 27... g6 28. h5 Kg7 29. Rh4 (29. e4 $142) 29... Rxc5 $17
30. Rxa4 Re7 ({Don't do} 30... gxh5 31. Rh4 $15) 31. hxg6 hxg6 32. Rh1 Rc4 33.
Kc1 Kf6 34. Rxc4 Bxc4 {[%mdl 4096] Endgame KRB-KRB} 35. Kd2 Rd7+ 36. Ke1 Kg5 ({
Black should try} 36... Bd5 $17 37. Rh4 e4) 37. e4 $11 f4 38. gxf4+ Kxf4 39.
Rg1 g5 40. e3+ $2 {[%mdl 8192] Now White is beyond hope.} (40. Rf1+ $1 $11 {
and White is okay.} Kg4 41. Rh1) 40... Kxe3 $19 41. Rxg5 {[#]} Be2 $1 42. Rg1
$2 (42. b4) 42... Bf3 {( -> ...Rd2)} 43. Rf1 (43. Rg3 $142 Rh7 44. Rg1) 43...
c5 44. a4 c4 45. a5 Rd6 46. Rf2 Ra6 47. b4 cxb3 48. Bxb3 Rxa5 49. Bd1 Bxd1 50.
Re2+ Kf3 (50... Kf4 $142 51. Rb2 Bf3 52. Kd2 Bxe4 53. Rb6 Ra2+ 54. Kc1 Ra1+ 55.
Kd2 Bc6 56. Kc3 e4 57. Rb4 Kf3 58. Rb3 e3 59. Kd4 Rd1+ 60. Kc5 Kf2 61. Rb2+ e2
62. Kb4 Kf1 63. Rxe2 Kxe2 64. Kc5 Re1 65. Kd4 Kd2 66. Kc4 b6 67. Kb3 Re3+ 68.
Kc4 Kc2 69. Kb4 Re4+ 70. Ka3 Ra4#) 51. Rb2 Ba4 {Weighted Error Value: White=0.
68/Black=0.19} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.13"]
[White "Artemiev, Vladislav"]
[Black "Petrosyan, Manuel"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2699"]
[BlackElo "2605"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,105,5,5,5,6,10,17,16,7,10,9,14,8,13,8,11,13,22,15,24,22,20,12,14,6,
24,0,0,0,0,-19,-19,-14,-12,-17,-6,-6,-13,-6,-6,-6,-8,-10,0,0,13,0,25,25,73,19,
16,8,7,7,24,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,8,8,8,8,8,8,8,8,16,0,8,0,0,-8,-8,-8,
-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3
d6 6. c3 a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 7.
Re1 O-O 8. h3 h6 9. Nbd2 a4 10. Bb5 Bd7 11. Nf1 Ne7 12. Bxd7 Qxd7 13. d4 exd4
14. cxd4 Bb4 15. Bd2 Bxd2 {[#]} 16. N3xd2 $146 ({Predecessor:} 16. Qxd2 d5 17.
e5 Ne4 18. Qc2 a3 19. b3 f5 20. exf6 Rxf6 21. Ne5 Qd6 22. f3 Ng5 23. Ng3 Ne6
24. Rad1 Re8 {1/2-1/2 (24) Salati,P (2318)-Jensen,B (2301) ICCF email 2019})
16... b5 17. Ng3 c5 18. e5 dxe5 19. dxc5 Rad8 20. Nde4 Nxe4 21. Nxe4 Qc6 22.
Qf3 Rd4 23. Rad1 Rfd8 24. Nd6 Qxf3 25. gxf3 {[#] Threatens to win with Rxd4.}
Rxd1 26. Rxd1 $11 {[%mdl 4096] Endgame KRN-KRN} Nc6 27. Kg2 f5 28. Re1 b4 29.
h4 g5 30. hxg5 (30. h5 $16) 30... hxg5 31. Rh1 Nd4 32. Rc1 {Black should
prevent c6.} Nc6 33. Kf1 Kh7 {The position is equal.} 34. a3 {axb4 is the
strong threat.} Rb8 35. Rc4 Kg6 36. axb4 Rxb4 37. Rxb4 Nxb4 {KN-KN} 38. Nc4 Kf6
39. Nb6 e4 40. fxe4 fxe4 41. Nxa4 Ke5 42. Nc3 Kd4 {[#]} 43. Na2 $1 Nc6 ({Not} 
43... Nxa2 $2 44. c6 $18) ({Avoid the trap} 43... Kxc5 $2 44. Nxb4 Kxb4 45. Ke2
$18) (43... Nd5 44. c6) 44. b4 Kd3 45. Kg2 Kc4 46. Kh3 Ne5 47. Kg3 Kb3 48. b5
Kxa2 49. c6 Nc4 50. Kg4 Kb3 51. c7 Nb6 52. Kf5 Kc4 53. Kxe4 {Weighted Error
Value: White=0.06/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.14"]
[White "Korobov, Anton"]
[Black "Shevchenko, Kirill"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2690"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,60,2,0,15,16,25,13,18,22,17,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7.
Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 O-O 12. Nc2 Be6 13. Be2 Bg5
14. O-O Rb8 15. Nce3 g6 {B33: Sicilian: Pelikan and Sveshnikov Variations.} 16.
a4 Bxe3 17. Nxe3 bxa4 {The position is equal.} 18. Qxa4 Rxb2 19. Qxc6 Rxe2 20.
Qxa6 {[#]} Rd2 $146 ({Predecessor:} 20... Rb2 21. Rab1 Rxb1 22. Rxb1 Qc7 23. h3
Rb8 24. Rxb8+ Qxb8 25. Qd3 Qb2 26. Qxd6 Qxc3 27. Nd5 Bxd5 28. exd5 Qc1+ {
1/2-1/2 (28) Peltrault,F (2305)-Parr,E (2285) France 1998}) 21. Rfd1 Rxd1+ 22.
Rxd1 Qc8 23. Qxd6 Qxc3 24. h4 h5 25. Nd5 Bxd5 26. exd5 Qc2 27. Re1 Qd2 28. Rb1
e4 29. Qe5 Rd8 30. Qxe4 Qxd5 {A rather calm draw.  Weighted Error Value:
White=0.01/Black=0.01} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.15"]
[White "Kuzubov, Yuriy"]
[Black "Grandelius, Nils"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2624"]
[BlackElo "2662"]
[Annotator "TA"]
[PlyCount "313"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,313,0,6,0,0,5,8,11,0,13,19,15,19,15,13,-45,-53,-44,-33,-45,-47,-34,
-39,-34,-35,-43,-52,-28,-31,-46,-51,-35,-27,-22,-6,-20,-27,-30,0,0,33,26,48,45,
143,41,33,34,49,38,38,38,71,0,0,0,0,0,39,39,39,-19,-19,-20,-20,-20,-20,-72,0,0,
0,0,0,0,0,0,0,-14,0,-20,0,-19,-23,-25,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12,0,-14,
0,-14,0,0,0,-27,0,-26,0,0,0,0,0,-15,-15,-15,-15,-15,-8,-15,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. d4 Nf6 2. Nf3 g6 3. Nbd2
Bg7 4. e4 O-O 5. Bd3 c5 6. c3 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London and Colle
Systems.} d5 7. e5 Nh5 8. O-O cxd4 9. cxd4 Nf4 10. Bc2 {[#]} f6 $146 ({
Predecessor:} 10... Nc6 11. Nb3 Ne6 12. Be3 a5 13. a4 Nb4 14. Bb1 b6 15. Qd2
Ba6 16. Rd1 f5 {0-1 (50) Jakobsen,O (2420)-Gutman,L (2480) Thessaloniki 1984})
11. exf6 Bxf6 12. Ne5 (12. Bb3 $11) 12... Bxe5 $15 13. dxe5 Nc6 14. Nb3 Nxe5 {
...Nh3+! is the strong threat.} 15. Nd4 Qd6 16. Bf5 Nc6 17. Bxf4 Qxf4 {[%mdl
64] Double Attack} 18. Bxc8 {Strongly threatening Nxc6.} Nxd4 ({Much weaker is
} 18... Raxc8 $6 19. Ne6 $14) 19. Bxb7 Rad8 20. Qd3 e5 21. Rac1 Qf7 22. Ba6 Qf6
23. Rc7 Rd6 24. Rxa7 Nc6 25. Rc7 Nd4 $1 26. Bb7 Qg5 {[#]} ({Black should play} 
26... Qd8 $14 27. Rc8 Qb6) 27. Rc5 (27. a4 $1 $16) 27... Ne6 $14 28. Rxd5 Nf4 {
[%csl Gf4][%cal Rg5g2][%mdl 64] Double Attack} 29. Rxd6 Nxd3 30. Rxd3 Rd8 {[#]}
31. Rb3 (31. Bd5+ $1 $16 Kg7 32. b3) 31... Qd2 $11 32. g3 Qe2 33. Bf3 Qc2 34.
Re1 Rd2 $1 {[%cal Rd2f2]} 35. Rb8+ (35. Rxe5 $14 Rxf2 36. Re7 Rxf3 37. Rxf3)
35... Kg7 36. Rb7+ Kh6 37. Be4 Qc5 38. Rf7 (38. Rf1 $11) 38... Qc4 ({Better is
} 38... Rxb2 $17 39. Rd1 Rb4) 39. Rf3 Re2 (39... Rxb2 {feels hotter.} 40. a3
Qd4 41. h4 Ra2 42. Kg2 Kg7) 40. Rxe2 Qxe2 {[%mdl 4096] Endgame KQ-KRB} 41. Re3
Qxb2 42. Bd5 Qd4 43. Bb3 Kg7 44. Rf3 Qc5 (44... g5 {seems wilder.} 45. h3 h5
46. Rf7+ Kg6 47. Rc7 Qb6) 45. Rf7+ (45. h4 {feels hotter.} Qc1+ 46. Kg2 Qc6 47.
g4 Kh6 48. Kg3) 45... Kh8 46. Rd7 Qc1+ 47. Rd1 Qc3 48. h4 Qc8 49. Rd6 Qc5 50.
Re6 Qd4 51. Re8+ Kg7 52. Re7+ Kh8 53. Rf7 (53. Kg2 {is interesting.} h5 54.
Re8+ Kg7 55. Re7+ Kf8 56. Rc7) 53... Qc5 54. Rf3 (54. Kg2 {feels hotter.} h5
55. Rf6 Qd4 56. Re6 Qe4+ 57. Kh2) 54... Kg7 55. Re3 (55. Rf7+ {seems wilder.}
Kh6 56. Rf6 Kg7 57. Ra6 Qc1+ 58. Kg2) 55... Qd4 56. Kg2 Qc5 57. Rd3 Qc6+ 58.
Rd5 Qc7 59. Kf1 Qc1+ 60. Ke2 {The position is equal.} Qb2+ 61. Rd2 Qc3 62. Rc2
Qa5 63. Rc4 Qb6 64. Kf1 Qb7 65. Kg1 Qb6 66. Bc2 Qa5 67. Ra4 Qc7 68. Be4 Qd7 69.
Rc4 Qd2 70. a3 Qa5 71. a4 Qd2 72. Kg2 Qe2 73. Rc7+ Kh8 74. Bf3 (74. Bb7 {
with more complications.} Qa2 75. Rc8+ Kg7 76. Ra8 Qe2 77. Bf3) 74... Qa6 75.
Bc6 Qb6 76. Rc8+ Kg7 77. Bb5 Qd6 (77... Qd4 {keeps more tension.} 78. Rc7+ Kh6
79. Rd7 Qc5 80. Rd1 Qb4) 78. Rc1 Qd2 79. Rc7+ Kh8 80. Rd7 Qb4 81. Ra7 Qd4 82.
Rd7 Qb4 83. Kg1 Qe1+ 84. Bf1 Qa5 (84... e4 {seems wilder.} 85. Re7 Qb4 86. Re8+
Kg7 87. Bg2 Qe1+) 85. Re7 Qxa4 86. Rxe5 Qa1 87. Re3 Qc1 88. Kg2 Qc6+ 89. Kh2
Qf6 90. Re2 Qd4 91. Bg2 Qf6 92. Be4 Qd4 93. Kg2 Qc4 94. Bf3 Qc5 95. Rd2 Qe7 96.
Rd5 Kg7 97. Rb5 Qf6 98. Be4 Qd4 99. Bd5 Qd3 100. Rb7+ Kh8 101. Rd7 (101. Bf3 {
looks sharper.} Qc4 102. Rb8+ Kg7 103. Rb7+ Kh8) 101... Qb5 102. Rd8+ Kg7 103.
Be4 Qa4 104. Bf3 Qb5 (104... Kh6 {feels hotter.} 105. Rd6 Kg7 106. Rd5 Qb4 107.
Rd7+ Kg8) 105. Rd5 Qa4 106. Rg5 Qb4 107. h5 Qe7 108. Rb5 {Threatens to win
with Rb7!} Qe8 109. Rb7+ Kh6 110. Rb6 Qd8 111. Rc6 Qd4 112. hxg6 hxg6 113. Rc7
Qe5 (113... g5 {is interesting.} 114. g4 Kg6 115. Rb7 Kf6 116. Rb5 Kg6) 114.
Rd7 Qe6 (114... g5 {keeps more tension.} 115. Rd5 Qe1 116. Rd6+ Kg7 117. Rb6
Qe5) 115. Rd4 (115. Rd5 {looks sharper.} Qe7 116. Rb5 Qe6 117. Rb7 Qc4 118. Rd7
) 115... Qe5 116. Rg4 (116. Rc4 {is more complex.} Kg5 117. Rh4 Kf6 118. Rf4+
Kg5 119. Rg4+) 116... Qe6 (116... g5 {with more complications.} 117. Ra4 Qb5
118. Ra7 Qc4 119. g4 Qc2) 117. Re4 Qf5 118. Rh4+ Kg7 119. Rb4 Qc5 120. Rb7+ Kf8
121. Rb3 (121. Be4 {seems wilder.} Qd4 122. Bf3 g5 123. Rh7 Kg8 124. Rc7)
121... Kg7 122. Be4 Qd4 123. Re3 Kh6 124. Re1 Kg7 125. Ba8 Qd8 126. Ra1 Qd4
127. Rb1 Kh6 128. Rb8 Qa7 129. Rh8+ Kg7 130. Rc8 Qd4 131. Rc7+ Kh6 132. Bf3 Qe5
133. Rc4 Qe6 134. Re4 (134. Rh4+ {is interesting.} Kg5 135. Rd4 Kf6 136. Rf4+
Kg5 137. Rg4+) 134... Qf5 135. Rh4+ Kg7 136. Be4 Qe6 137. Bf3 Qe5 138. Ra4 Kh6
139. Ra2 Qd4 140. Re2 Qd6 141. Be4 Qd4 142. f3 Kg7 143. Rc2 Qd6 144. Rb2 Kf8
145. Rc2 Kg7 146. Kh2 Qd4 147. Rc7+ Kf8 148. Kh3 ({Not} 148. Bxg6 $2 Qd2+ 149.
Kg1 Qg5 $19) (148. Rh7 {feels hotter.} Kg8 149. Rb7 Qd2+ 150. Kh3 Qh6+ 151. Kg2
) 148... Qh8+ 149. Kg2 {aiming for Rc8+.} Qd4 150. Rh7 Qd6 (150... Qd2+ {
with more complications.} 151. Kh3 Qg5 152. Rb7 Qh6+ 153. Kg2 Qd2+) 151. Kh3
Qe6+ 152. g4 g5 153. Rb7 Qe5 154. Kg2 Qd4 155. Rb5 Qd2+ 156. Kh3 Qc1 157. Rf5+
{Weighted Error Value: White=0.14/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.16"]
[White "Aronian, Levon"]
[Black "Abdusattorov, Nodirbek"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2782"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,85,0,28,24,36,29,45,39,52,41,42,46,53,0,20,25,35,36,42,26,33,26,69,52,
56,55,68,68,71,66,59,44,45,45,47,35,43,24,40,40,35,35,50,52,70,58,58,54,57,45,
45,45,53,35,35,35,35,35,112,82,118,107,97,102,589,585,579,590,588,577,573,540,
1586,1586,1489,1372,1000,852]} 1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. Nf3 Nc6 5. Nbd2
Nh5 6. dxc5 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6
3 Bf4.} Nxf4 7. exf4 g6 (7... Qa5 8. a3 Qxc5 9. c4 e6 10. b4 Qd6 11. g3 g6 12.
Rc1 Bg7 13. Qb3 O-O 14. Bg2 a5 15. O-O axb4 16. c5 Qe7 17. axb4 {0-1 (37)
Aronian,L (2782)-Abdusattorov,N (2634) chess24.com INT 2021}) 8. c3 {White is
slightly better.} Bh6 9. g3 O-O 10. Nb3 {[#]} Bg7 $146 ({Predecessor:} 10... a5
11. Nbd4 a4 12. b4 axb3 13. axb3 Bg4 14. Bg2 Nxd4 15. cxd4 Qd7 16. O-O Qb5 {
1-0 (76) Bluebaum,M (2672)-Nguyen,T (2571) Bad Wiessee 2020}) 11. h4 (11. Qd2
$14) 11... Bg4 12. Be2 Bxf3 13. Bxf3 e6 14. O-O Rc8 15. Qe2 Na5 16. Rfd1 Nc4 {
[#]} 17. Be4 $1 Na5 18. Bd3 b6 19. cxb6 Qxb6 20. h5 Nxb3 21. axb3 a5 22. Bc2
Rc5 23. Rd3 d4 24. hxg6 (24. cxd4 Rxh5 25. Rad1 Rd5 $17) 24... hxg6 {[%cal
Rd4c3]} 25. c4 Bf6 26. g4 Qd6 27. Qe4 Bg7 28. Kg2 Rb8 29. Rf3 Kf8 30. Rh3 g5
31. f5 exf5 32. gxf5 Re5 33. Qf3 Bf6 ({Black should try} 33... Qe7 $14) 34. Be4
$16 d3 {[#] White must now prevent ...Qd4.} 35. Bd5 ({Much worse is} 35. Bxd3
$6 Rxb3 36. Rd1 Rxb2 $11) (35. Qxd3 Qxd3 36. Bxd3 Rxb3 $11) 35... d2 36. Rd1 {
aiming for Rh7.} (36. Rxa5 Re1 $19) 36... a4 $2 {[%mdl 8192] Black cannot hold
the game after this.} (36... Bg7 $16 {is tougher.}) 37. Rh7 $18 {Strongly
threatening Qh5.White is clearly winning.} ({Weaker is} 37. Qh5 Rxd5 38. cxd5
Qxd5+ 39. Qf3 Qd4 $14) 37... Rxd5 38. Qxd5 ({Not} 38. cxd5 Rxb3 39. Qe4 Rb4 $11
) 38... Qxd5+ 39. cxd5 Rxb3 40. Rxd2 Rxb2 41. Rxb2 Bxb2 {KR-KB} 42. Rh6 a3 43.
Ra6 {Weighted Error Value: White=0.06/Black=0.32} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.17"]
[White "Niemann, Hans Moke"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2638"]
[BlackElo "2700"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,50,0,0,0,-29,2,-66,-60,-81,-66,-147,-141,-127,-138,-149,-143,-129,
-134,-136,-134,-141,-150,-327,-273,-354,-342,-349,-349,-400,-401,-364,-327,
-478,-452,-525,-529,-478,-477]} 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. g3 Nc6 5. Nc3
e6 6. Bg2 Rb8 7. O-O b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 8. Ne5 Nxe5 {E04: Open
Catalan: 5 Nf3.} ({Avoid the trap} 8... Nxd4 $2 9. e3 $18) 9. dxe5 Nd7 10. a4 (
{Better is} 10. Qc2 $11) 10... b4 $15 {Black is slightly better.} 11. Nb5 Bc5 (
{Weaker is} 11... Nxe5 12. Bf4 $16) 12. Bf4 {[#]} (12. Be3 $15) 12... g5 $1 $17
{[%cal Rg5f4]} 13. Be3 {[#]} Bxe3 14. fxe3 {next Qd4 is good for White.} a6 $36
{[%mdl 2048] Black has strong initiative.} ({Much less strong is} 14... Nxe5
15. Qd4 $11) 15. Na7 {And now Nc6 would win.} Nxe5 {...Qxd1 is the strong
threat.} 16. Qd4 Qd6 {[#]} 17. Rfd1 $146 ({Predecessor:} 17. Nc6 Qxd4 18. exd4
Nxc6 19. Bxc6+ Ke7 20. Rac1 c3 21. bxc3 b3 22. Rb1 f5 23. Rb2 {0-1 (55) Cori
Tello,D (2403)-David,A (2622) Paris 2010}) 17... O-O 18. Qe4 $2 {[#]} (18. Qxd6
$17 cxd6 19. Rxd6) 18... Bb7 $1 19. Qxb7 (19. Rxd6 Bxe4) 19... Rxb7 20. Rxd6
Rxa7 21. Rd4 c5 22. Rd6 a5 23. Rb6 (23. Rad1 {was necessary.}) 23... Rd8 $19 {
Black is clearly winning.} 24. Rb5 Rd2 25. Rxc5 f6 {Black took control after
the opening.  Weighted Error Value: White=0.48/Black=0.05} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.18"]
[White "Eljanov, Pavel"]
[Black "Saric, Ivan"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2691"]
[BlackElo "2644"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,80,26,15,27,30,44,45,41,24,29,9,11,17,20,0,0,-8,-14,-8,-8,-5,-5,0,0,
-9,-9,-9,-9,-9,-4,-4,-6,-5,0,0,1,0,0,0,0,0,9,0,37,0,0,0,0,-8,-8,-8,-8,-8,-8,
-50,-10,-46,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 d5 2. c4 c6 3. g3 Nf6 4. Bg2 g6 5.
b3 Bg7 6. Bb2 O-O 7. O-O a5 8. d3 {8.Nc3 is the modern continuation.} b6 {
A11: English Opening: 1...c6.} 9. Qc2 Bb7 {[#]} 10. e4 $146 ({Predecessor:} 10.
Rc1 c5 11. cxd5 Bxd5 12. Nbd2 Na6 13. a3 Rc8 14. Nc4 Bb7 15. Be5 Ne8 16. Qb2
Bxe5 17. Qxe5 {1/2-1/2 (60) Bakre,T (2507)-Deepan Chakkravarthy,J (2470)
Aurangabad 2011}) 10... Na6 {White is slightly better.} 11. a3 e6 12. Be5 Re8
13. Nc3 Nc5 14. exd5 exd5 15. Rfe1 dxc4 16. dxc4 Qd3 17. Qb2 {Na4 is the
strong threat.} Qf5 {And now ...Nd3 would win.} 18. Nh4 Qe6 19. Qb1 Rad8 {
[#] White must now prevent ...Nd3.} 20. Bc7 Qxe1+ 21. Qxe1 Rxe1+ 22. Rxe1 Rd3
23. Bxb6 Nxb3 24. Na4 Bf8 25. Nf3 Nd7 26. Be3 {Threatens to win with Bf1.} Nbc5
({Wrong is} 26... Bxa3 $2 27. Bf1 $18) 27. Nxc5 Nxc5 28. a4 Ra3 29. Ne5 Rxa4
30. Rd1 Ne6 31. Bh3 {[#] aiming for Bxe6.} f5 32. Bg2 Bc5 33. Bxc5 Nxc5 34.
Nxc6 Ra2 35. h4 a4 (35... Bxc6 $5 36. Bxc6 Kf7 $15) 36. Rd5 {The position is
equal.} Ra1+ 37. Kh2 Bxc6 38. Rxc5 Bxg2 39. Kxg2 a3 40. Rc7 Rc1 {Weighted
Error Value: White=0.05/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.19"]
[White "Yilmaz, Mustafa"]
[Black "Wojtaszek, Radoslaw"]
[Result "1-0"]
[ECO "D39"]
[WhiteElo "2626"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,79,30,22,23,22,22,22,21,21,20,9,23,7,16,32,45,24,32,23,32,41,22,22,
84,82,68,79,85,47,82,65,60,70,51,61,67,21,47,45,50,39,31,55,55,22,32,32,41,0,0,
0,233,233,224,3,8,15,583,588,554,545,524,515,486,200]} 1. d4 Nf6 2. c4 e6 3.
Nf3 d5 4. Nc3 Bb4 5. Bg5 dxc4 6. e4 c5 7. Bxc4 cxd4 8. Nxd4 Qa5 9. Bd2 Qc5 {
D39: Queen's Gambit Declined: Ragozin Defence with 5 Bg5 dxc4.} 10. Bb5+ Bd7
11. Nb3 Qe7 {The position is equal. 11...Qc7 deserves study.} 12. Bd3 Nc6 13.
a3 Bd6 14. O-O O-O 15. Kh1 Ne5 {[%cal Bc6e5,Be5g6,Bg6f4][%mdl 32]} 16. Be2 {
And now f4 would win.} (16. Bg5 $5 {[%cal Rf2f4]}) 16... Ng6 17. f4 e5 $1 {
[%cal Re5f4]} 18. f5 Nf4 19. Bf3 Bc6 (19... h6 $11 {remains equal.}) 20. Na5
$16 {[#] Threatens to win with g3.} Rfd8 $146 ({Predecessor:} 20... Bc5 21.
Nxc6 bxc6 22. Na4 Rfd8 23. Nxc5 Qxc5 24. b4 Qb6 25. Qc2 Nd3 26. Bc3 c5 {
0-1 (39) Navara,D (2700)-Kulaots,K (2560) Riga 2014}) 21. Qc2 {Strongly
threatening g3.} h6 22. Rad1 Be8 23. Bxf4 exf4 {[#]} 24. Nxb7 $1 Qxb7 25. e5 $1
{[%mdl 64] Double Attack} Bc6 26. exf6 (26. exd6 {with more complications.} Rd7
27. Qd2 Rad8 28. Qxf4 Qb6 29. Rg1) 26... Be5 27. Bxc6 Qxc6 28. fxg7 Rxd1 29.
Qxd1 Rb8 30. h3 Rxb2 {[%csl Gb2][%cal Rc6g2]} 31. Nd5 {aiming for Ne7+.} Kxg7
32. Re1 Qd6 33. Qg4+ Kh7 $2 {[#]} (33... Kf8 $1 $11 34. Rd1 Ra2) 34. f6 $1 $18
{[%mdl 64] Decoy} Bxf6 {[#]} 35. Qf5+ (35. Nxf4 Qc6 $11) (35. Qd7 $1 $18 {
[%cal Rd7d6][%mdl 512]} Qxd7 36. Nxf6+ Kg6 37. Nxd7) 35... Kg7 $11 36. Nxf4 $40
{[%mdl 128] Nh5+ is the strong threat. Black needs to defend precisely.} Bh4 $2
{[%mdl 8192] Black cannot hold the game after this.} (36... Qc6 $11) 37. Nh5+
$18 {White is clearly winning.} ({And not} 37. Re8 Qd1+ 38. Kh2 Qd6 $11) 37...
Kf8 38. Qc8+ Qd8 {[#]} 39. Qc5+ (39. Qc3 Bxe1 40. Qh8+ (40. Qxb2 Qd6 $11) 40...
Ke7 $14) 39... Kg8 40. Qc3 {Weighted Error Value: White=0.17/Black=0.50} (40.
Qe5 $142 {[%csl Gh5][%cal Re5g7]} f6 41. Qe4 (41. Qxb2 Bxe1 42. Qb7 Qf8 $16)
41... Bxe1 42. Qg6+ {[%mdl 64] Double Attack} Kf8 43. Qg7+ {[%mdl 64] Double
Attack} Ke8 44. Nxf6+ Qxf6 45. Qxf6) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.20"]
[White "Najer, Evgeniy"]
[Black "Bluebaum, Matthias"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2654"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,99,18,20,20,23,23,25,23,30,28,20,28,15,0,0,4,0,-17,-16,-16,-22,-15,
-15,-25,-16,-25,-11,-14,-12,-16,-12,-19,-11,-10,-8,-23,-25,-66,-64,-59,-63,-49,
-49,-50,-62,-55,-54,-94,-66,-57,-63,-51,0,0,3,0,0,-29,-29,-29,-30,-34,-18,-42,
-41,-85,-34,-38,-34,-42,-44,-43,-44,-44,-40,-44,-43,-54,-36,-37,-37,-37,-37,
-37,0,-33,0,-27]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. c3 Nc6 7.
O-O Bg6 8. Be3 {B12: Caro-Kann: Advance Variation.} cxd4 9. cxd4 {was the old
line (9.Nxd4).} Nge7 10. Nh4 {White has an edge.} Nf5 11. Nxf5 Bxf5 12. Nc3 Be7
13. g4 Bg6 14. f4 {[#] Strongly threatening f5.} f6 15. exf6 Bxf6 16. Bd3 Bxd3
17. Qxd3 O-O {[#]} 18. Rf2 $146 ({Predecessor:} 18. Kh1 Qd7 19. Rae1 Rae8 20.
Ne2 Bd8 21. Ng1 Bc7 22. Rf2 g6 23. Ref1 Re7 24. Nh3 Rfe8 25. Ng5 {1-0 (69)
Zhigalko,A (2587)-Prohaszka,P (2501) Rijeka 2010}) 18... Qd7 19. Raf1 Rae8 20.
Rf3 Bd8 21. Ne2 Bb6 22. Kh1 Qe7 23. a3 Rf7 24. Rh3 g6 25. f5 exf5 26. gxf5 Qe4+
$1 27. Qxe4 dxe4 28. Kg2 Rxf5 29. Rxf5 gxf5 30. Rh5 Rf8 31. Rg5+ Kh8 32. Bf4
Rd8 ({Don't go for} 32... Bxd4 $2 33. Nxd4 Rg8 34. Nxf5 $18) (32... Rg8 $15 33.
d5 Rxg5+ 34. Bxg5 Na5) 33. b4 $11 a6 ({Reject} 33... Bxd4 34. b5 $16) 34. Rxf5
Nxd4 35. Rf6 (35. Be5+ {is interesting.} Kg8 36. Rg5+ Kf8 37. Nxd4 Bxd4 38.
Rf5+) 35... Nxe2 36. Be5 {[%cal Rf6g6] [#]} Kg8 $1 37. Rxb6 {[%mdl 4096]
Endgame KRB-KRN} Re8 38. Bg3 e3 39. Bh4 Nd4 ({Black should play} 39... Nc1 $17
{White must now prevent ...e2.} 40. Rd6 e2) 40. Rxb7 $15 e2 41. Rb6 e1=Q (41...
e1=B {seems wilder.} 42. Bxe1 Rxe1 43. Rxa6 Rb1 44. Kg3 Rb3+) 42. Bxe1 Rxe1 43.
Rxa6 {KRN-KR} Rb1 44. Kg3 Rb3+ 45. Kg4 Nc2 46. Ra8+ Kg7 47. Ra7+ Kg6 48. Ra6+
Kg7 49. Ra7+ Kg6 50. Ra6+ {Weighted Error Value: White=0.08/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.21"]
[White "Sarana, Alexey"]
[Black "Sadhwani, Raunak"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2649"]
[BlackElo "2609"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,71,2,20,-9,28,24,21,23,28,26,51,42,44,38,46,40,44,52,56,37,36,29,81,
82,78,80,99,67,93,81,103,85,97,87,129,116,120,96,108,98,128,62,147,145,216,183,
199,183,177,209,197,191,196,212,225,190,470,335,484,512,1207,1164,1559,883]} 1.
d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bf4 {D38: Queen's Gambit
Declined: Ragozin Defence (4 Nf3 Bb4).} O-O 7. e3 c6 8. Bd3 {The position is
equal.} Bg4 9. Qb3 Qb6 10. Ne5 {[#]} Be6 $146 ({Predecessor:} 10... Bh5 11. O-O
Be7 12. Qc2 Bg6 13. Nxg6 hxg6 14. Na4 Qd8 15. Nc5 Bxc5 16. Qxc5 Nbd7 {1-0 (33)
Tran,T (2526)-Nguyen,V (2456) Ho Chi Minh City 2019}) 11. O-O {[#] Strongly
threatening Na4.} Be7 12. Qc2 Nbd7 13. h3 g6 14. Bg5 Rfe8 15. f4 Nxe5 (15...
Nh5 $1 $11) 16. fxe5 $16 Nd7 17. Bxe7 Rxe7 18. Na4 Qd8 19. Rf4 Rc8 20. Qf2 c5
21. Rf1 cxd4 22. exd4 Nf8 23. Nc5 Qe8 24. h4 b6 25. Nb3 (25. Na6 $16) 25... Bd7
(25... Rec7 $14) 26. h5 Bb5 (26... Ne6 $16) 27. Bxb5 $18 Qxb5 28. Rxf7 Qxf1+
29. Qxf1 Rxf7 30. Qb5 Rd8 31. h6 Ne6 32. Qc6 Nf4 {[#]} (32... Re7 33. a4 Nf8)
33. Kh2 Rdf8 (33... Ne2 $142 34. e6 Re7) 34. g3 {White is clearly winning.} Ne2
(34... Nh5 $142 35. Qxd5 Kh8) 35. Qxd5 Kh8 36. e6 {Weighted Error Value:
White=0.14/Black=0.34} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.22"]
[White "Ter-Sahakyan, Samvel"]
[Black "Swiercz, Dariusz"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2607"]
[BlackElo "2647"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,79,18,20,14,-9,-16,-24,-7,-13,-8,-19,-20,-14,-32,-24,-5,-30,-32,-33,
-32,-32,-32,-32,-32,-43,-32,-32,-32,-32,-36,-32,-11,-32,-32,-32,-33,-34,-39,
-39,-29,-33,-33,-50,-29,-29,-29,-29,-29,-66,-66,-66,-66,-66,-44,-59,-44,-44,
-44,-44,-44,-44,-44,-44,0,-44,0,-44,0,-44]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3
Nbd7 5. Bf4 Bb4 6. cxd5 exd5 7. e3 Ne4 {D35: Queen's Gambit Declined: Exchange
Variation.} 8. Rc1 g5 9. Be5 f6 {Black has an edge.} 10. Bg3 h5 {[#]} 11. h4
$146 ({Predecessor:} 11. Qb3 Bxc3+ 12. bxc3 Nb6 13. h4 g4 14. Nd2 Nxd2 15. Kxd2
Be6 16. a4 a5 17. Bb5+ {0-1 (53) Shinkevich,V (2439)-Popov,V (2532) St
Petersburg 2018}) 11... g4 {[#] Strongly threatening ...Bxc3+.} 12. Ng1 Nxg3
13. fxg3 Qe7 14. Kf2 c6 15. Nge2 Bd6 16. Nf4 Bxf4 17. exf4 f5 18. Bd3 {[#] And
now Re1 would win.} Nf6 19. Re1 Ne4+ 20. Bxe4 fxe4 21. Qd2 O-O 22. Nd1 a5 23.
Ne3 Qd6 24. Rc3 Bd7 25. Rec1 a4 26. a3 Ra6 {[%cal Ba8a6,Ba6b6,Bb6b3][%mdl 32]}
27. R1c2 Rb6 28. Rc5 Rb3 {aiming for ...Rd3.} 29. R5c3 Rxc3 30. bxc3 b5 ({
But not} 30... Qxa3 $6 31. Ra2 $11) 31. Qc1 $1 Kf7 32. Qb2 Ke7 33. Qb4 Qxb4 34.
cxb4 $15 {[%mdl 4096] Endgame KRB-KRN} Kd6 35. Rc5 Bf5 36. Ke2 Rf7 37. Kd2 Rf8
38. Ke2 Rf7 39. Kd2 Rf8 40. Ke2 {Weighted Error Value: White=0.05/Black=0.08}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.23"]
[White "Svidler, Peter"]
[Black "Antipov, Mikhail Al."]
[Result "1/2-1/2"]
[ECO "D80"]
[WhiteElo "2694"]
[BlackElo "2619"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,78,16,12,12,6,3,14,12,16,12,0,4,0,0,-41,-35,-41,-42,-42,-42,-44,-43,
-47,-39,-35,-9,-10,-13,-10,-13,-36,-28,-36,-18,-31,-33,-32,-33,-40,-43,-38,-44,
-51,-60,-61,-56,-56,-55,-69,-12,-17,-21,-23,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6
2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. Bf4 Nxc3 7. bxc3 c5 8. e3 O-O 9.
Be2 dxc4 {D80: Grünfeld: Unusual White 4th moves and 4 Bg5.} 10. Bxc4 cxd4 11.
cxd4 Qa5+ 12. Qd2 Nc6 13. Rb1 b6 14. Qxa5 Nxa5 15. Bd5 {[#]} Bf5 $146 {[%cal
Rf5b1]} ({Predecessor:} 15... Bb7 16. Bxb7 Nxb7 17. Ke2 Rac8 18. Rhc1 Rfd8 19.
g4 Na5 20. Kd3 Nc6 21. Ke4 e6 {1/2-1/2 (53) Hackner,O (2063)-Talbot,M Torquay
2013}) 16. e4 {[#]} Rad8 17. Rc1 Bg4 18. Ne5 Bc8 {And now ...e6 would win.} 19.
Be3 e6 20. Bb3 Ba6 21. f3 Nxb3 22. axb3 f5 23. Rc7 f4 24. Bd2 Bb5 (24... Rxd4 {
is interesting.} 25. Nc6 Rd6 26. Ne7+ Kh8 27. Nc6 Bb5) 25. Bc3 Bxe5 26. dxe5 a5
27. h4 Rf7 28. Rxf7 Kxf7 $15 {[%mdl 4096] Endgame KRB-KRB} 29. Bd2 Rd3 30. Bxf4
Rxb3 {[#] Threatens to win with ...Rb1+.} 31. Kd2 a4 32. Rc1 a3 (32... Rd3+ $15
33. Kc2 Bc4) 33. Rc7+ $11 Ke8 {aiming for ...Ba4.} 34. Ra7 Bc4 35. Bh6 $1 {
The position is equal.} b5 36. Ra8+ $1 Kf7 (36... Kd7 $5 37. Bf8 $8 Rb2+ 38.
Kc3 Rb3+ 39. Kd2 Rb2+ 40. Kc3 Rxg2 41. Rxa3 Rf2 $11) 37. Ra7+ Ke8 38. Ra8+ $1
Kf7 {...b4 is the strong threat.} (38... Kd7 $5 39. Bf8 $8 Rb2+ 40. Kc3 Rb3+
41. Kd2 Rb2+ 42. Kc3 Rb3+ 43. Kd2 $11) 39. Ra7+ Ke8 {Weighted Error Value:
White=0.04/Black=0.05} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.24"]
[White "Erigaisi Arjun"]
[Black "Navara, David"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2634"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,103,8,15,12,11,5,0,0,12,6,12,0,8,14,35,0,0,0,16,7,16,17,11,0,0,0,0,
-22,-24,-48,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,71,33,102,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6
3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Qa4+ Nd7 8. Nf3 O-O 9. Be2 {
D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} Nb6 10.
Qd1 c5 11. O-O Bg4 12. Be3 Rc8 13. Rb1 cxd4 14. cxd4 {[#]} e6 $146 ({
Predecessor:} 14... Nc4 15. Bxc4 Rxc4 16. Qb3 Rc7 17. Bf4 Rc8 18. d5 Rc3 19.
Qxb7 Bxf3 20. gxf3 Rxf3 {1-0 (47) Krasenkow,M (2627)-Krzyzanowski,M (2457)
Poland 2017}) 15. h3 Bxf3 16. Bxf3 Rc7 17. d5 exd5 18. exd5 Qd6 19. Rc1 Nc4 20.
Bxa7 Bh6 21. Rc2 b6 22. Qe2 Ne5 (22... Nd2 $5 23. Rxd2 Bxd2 24. Bxb6 Qxb6 25.
Qxd2 Rc4 $11) 23. Rxc7 Qxc7 24. Qa6 Nxf3+ 25. gxf3 Qd7 {[#] Hoping for ...Ra8.}
26. Qxb6 Qxh3 {...Bf4 is the strong threat.} 27. Qf6 {Bd4 would kill now.} Bg7
28. Qf4 $36 {[%mdl 2048] White fights for an advantage.} Qd7 29. Bc5 Rc8 30.
Bd6 h5 31. Rb1 g5 32. Qb4 Rc3 (32... Bf6 $11) 33. Kg2 h4 {[#]} 34. Rd1 (34. a4
$1 $16) 34... h3+ $11 {The position is equal.} 35. Kg1 Rxf3 36. Qe4 Rxf2 37.
Kxf2 Qxd6 {[%mdl 4096] Endgame KQR-KQB} 38. Kg1 Qg3+ 39. Kh1 {Black must now
prevent Rg1.} Be5 {[%csl Ge5][%cal Rg3h2]} 40. Qe2 Bd6 41. Rg1 Qf4 42. Rf1 Qa4
43. Qe3 Bf4 44. Rxf4 gxf4 45. Qxh3 Qxa2 (45... Qd4 {with more complications.}
46. Qg2+ Kf8 47. Qg5 Ke8 48. Kg2 Qe4+) 46. Qg2+ Qxg2+ 47. Kxg2 {KPP-KP} Kf8 48.
Kf3 Ke7 49. Kxf4 Kd6 50. Ke4 f6 51. Kf5 Kxd5 52. Kxf6 {Weighted Error Value:
White=0.07/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.25"]
[White "Van Foreest, Jorden"]
[Black "Ponomariov, Ruslan"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2691"]
[BlackElo "2631"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,83,7,10,15,8,7,19,20,16,2,23,6,16,13,4,17,20,8,11,15,15,15,16,10,24,
11,10,4,55,53,60,51,47,72,64,69,155,152,198,201,210,206,214,207,316,316,358,
262,265,265,265,265,265,264,255,251,251,35,447,439,1465,1421,29972,29973,29979,
29980,29979,29980,29977,0,1895,0,5510,5389]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4.
d3 Bc5 5. c3 d6 6. O-O h6 7. b4 {C54: Giuoco Piano: 4 c3 Nf6, main lines with
5 d4 and 5 d3.} Bb6 8. Re1 {8.Nbd2 is setting a new trend.} O-O 9. Nbd2 {
The position is equal.} Ne7 10. d4 Ng6 11. Bf1 Re8 12. Qc2 c6 13. h3 Bc7 {[#]}
14. dxe5 $146 ({Predecessor:} 14. Rb1 Bd7 15. a4 Qc8 16. dxe5 dxe5 17. a5 b6
18. Nc4 Be6 19. axb6 axb6 20. b5 {1/2-1/2 (42) Vega Gutierrez,S (2413)
-Stefanova,A (2527) Gallipoli 2017}) 14... Nxe5 15. Nxe5 dxe5 16. a4 Be6 17.
Nc4 b5 18. Rd1 Qb8 19. Ne3 a5 ({Black should try} 19... Qb7 $11) 20. axb5 $14
cxb5 21. Nd5 Nxd5 22. exd5 Bd7 23. d6 $1 {[%cal Rd6c7]} Bxd6 (23... Bb6 $14)
24. Rxa5 $16 Re6 {[#]} 25. c4 $1 {aiming for Rxa8.} Bc6 26. cxb5 Rxa5 27. bxc6
({Don't do} 27. bxa5 $6 Bxb5 28. Qb3 Bxf1 $16) 27... Ra8 ({Wrong is} 27... Bxb4
$2 28. c7 $18) (27... Ra1 $142 28. b5 e4) 28. b5 $18 Bc7 29. Rd7 Rd6 {[#]} 30.
Rxd6 Bxd6 31. Be3 Bc7 {and the idea ...Bb6 leaves Black hopeful.} 32. Qc5 Ra5
33. g3 Qd8 34. Kg2 $2 ({White should play} 34. Qc2 $18) 34... e4 $2 {[%mdl
8192]} (34... Qd1 $1 $14) 35. Qd4 Ra3 (35... Qe8 $142 36. Qc3 Qd8) 36. b6 Rxe3
37. bxc7 ({Less strong is} 37. Qxe3 Bxb6 38. Qxe4 g6 $16) 37... Qxd4 38. c8=Q+
Kh7 39. Qf5+ {[%mdl 64] Double Attack} Kg8 40. Qc8+ (40. fxe3 $142 Qd2+ 41. Kg1
g6 42. Qd7 Qxe3+ 43. Kh2 Qc1 44. Bg2 f5 45. c7) 40... Kh7 {( -> ...Rf3)} 41.
Qf5+ (41. fxe3 $142 Qd2+ 42. Kh1) 41... Kg8 {White must now prevent ...Rf3.}
42. fxe3 {Weighted Error Value: White=0.63/Black=0.58} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.26"]
[White "Zhou, Jianchao"]
[Black "Ponkratov, Pavel"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "2629"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,112,29,47,26,27,25,33,24,39,25,26,29,37,6,13,0,0,11,21,18,17,0,0,-19,
-17,-26,-24,0,12,-19,0,-84,-77,-130,-41,-57,-34,-51,-61,-64,-25,-62,-39,-185,
-160,-236,-160,-157,-137,-118,-133,-219,-199,-200,-205,-221,-172,-163,-172,
-176,-171,-168,-189,-168,-159,-214,-180,-160,-145,-153,-153,-188,-137,-242,
-222,-356,-362,-554,-554,-522,-506,-416,-231,-215,-223,-514,-475,-944,-950,
-902,-821,-897,-935,-29975,-29976,-29976,-29977,-29985,-29986,-29991,-29985,
-29990,-29991]} 1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 Nd7 5. Nf3 f5 6. Qc2 Nh6 7.
g3 {A84: Dutch Defence: 2 c4 Miscellaneous.} Bd6 8. Bg2 O-O {[#]} 9. O-O $146 {
White is slightly better.} ({Predecessor:} 9. b3 dxc4 10. bxc4 e5 11. dxe5 Nxe5
12. O-O Be6 13. Rb1 Bxc4 14. Rd1 Nxf3+ 15. Bxf3 {1-0 (28) Garcia,L (1975)
-Cirilo,G (1918) Sao Paulo 2013}) 9... Nf7 10. b3 Qe7 11. a4 a5 12. Qa2 Bb4 13.
Ba3 dxc4 14. bxc4 e5 15. Rfc1 e4 16. Ne1 h5 17. Ne2 h4 18. Bxb4 axb4 19. c5 Nf6
20. Nf4 hxg3 21. hxg3 (21. fxg3 $11 {remains equal.} Re8 22. Qb3) 21... Kh7 $17
22. d5 (22. Qb2 $142) 22... cxd5 (22... g5 $17 23. d6 Qe5) 23. Nc2 $15 Qxc5 24.
Rab1 Qd6 25. Nxb4 Rd8 26. Rd1 {[%cal Rb4d5]} Ra5 27. Qd2 (27. Bf1 $1 $15) 27...
b6 (27... Rxa4 28. Nbxd5 Nxd5 29. Qxd5 $15) 28. Na2 (28. Rbc1 $17 Bd7 29. Qd4)
28... g5 (28... Rxa4 29. Nc3 $15) 29. Ne2 Rxa4 {Hoping for ...Ng4.} 30. Nac3
Rc4 31. Qb2 (31. Nb5 $17 Qf8 32. Nbd4) 31... Ne5 $1 $19 32. Nb5 Qe7 33. Nbd4
Rd6 34. Qa3 Rc5 $1 35. Nb3 {[#]} Nc4 $1 36. Qb4 Rc7 37. Nbd4 {intending Nb5.}
Bd7 38. Ra1 (38. Nc3 $17) 38... Kg6 39. Ra8 Qh7 40. Rc1 {aiming for Rxc4!} Rc5
{...Ng4 is the strong threat.} 41. Rb8 Qe7 (41... Ng4 $2 42. Rxc4 $1 {[%mdl
512]} dxc4 43. Rxb6 $18) ({Black should try} 41... Qh5 $1 $19 42. Rc2 Qh6) 42.
Rb7 (42. Ra1 $17) 42... Qd8 43. Bh3 (43. Nb3 $142 Rb5 44. Qc3) 43... Qh8 $1 {
[%cal Rh8h3]} 44. Rxd7 (44. Bg2 $142) 44... Qxh3 (44... Rxd7 45. Bxf5+ Kf7 46.
Ne6 $11) 45. Rxd6 Nxd6 46. Ne6 {[#]} Rxc1+ (46... Qh6 $142 $1 {Strongly
threatening ...Ng4!} 47. Kg2 (47. Nxc5 $2 Ng4 $19) (47. Nxg5 Rxc1+) 47... Rxc1
48. Nxc1 f4 $1 49. Qxd6 f3+ 50. Kg1 Qh3 51. Nf8+ Kf7 52. Qe6+ Qxe6 53. Nxe6
Kxe6) 47. Nxc1 {[#]} f4 $1 {[%cal Rf4f3]} 48. Nxg5 ({But not} 48. Qxd6 $2 f3
$19) (48. Nxf4+ {is the only way for White.} gxf4 49. Ne2) (48. Nxf4+ gxf4)
48... Qc8 49. Nb3 (49. Ne2 $142 f3 50. Ne6 fxe2 51. Nf4+ Kf7 52. Nxe2) 49...
fxe3 50. fxe3 Nde8 51. Nxe4 dxe4 52. Qxb6 Qc3 {Black mates.} 53. Kf2 Nc7 54.
Qa5 Ng4+ {[%mdl 64] Double Attack} 55. Kg2 Nxe3+ 56. Kg1 Qxb3 {Weighted Error
Value: White=0.50/Black=0.14} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.27"]
[White "Hovhannisyan, Robert"]
[Black "Cori, Jorge"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2622"]
[BlackElo "2655"]
[Annotator "TA"]
[PlyCount "163"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,163,34,25,36,32,36,27,69,69,67,64,73,66,93,93,99,99,158,149,172,172,
172,172,172,156,168,143,160,128,155,85,86,86,86,86,86,86,85,79,79,79,79,79,98,
92,138,81,138,57,104,50,48,45,45,45,51,48,52,52,52,45,69,69,69,69,84,84,84,0,
84,84,84,84,84,0,84,0,26,8,8,8,8,0,0,0,0,0,0,0,9,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,
8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,8,8,8,8,8,8]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. O-O
Ng6 {6...h6 is setting a new trend. B12: Caro-Kann: Advance Variation.} 7. a4
Nd7 8. Ne1 $5 {[%mdl 4] Black must now prevent g4. Exploring less charted
territory.} h5 {[#] White has an edge.} 9. Na3 $146 ({Predecessor:} 9. a5 c5
10. c3 cxd4 11. cxd4 Bxb1 12. Rxb1 Qxa5 13. Be3 h4 14. h3 Be7 15. Bd3 {1-0 (33)
Malmstroem,J (1993)-Sherwood,R (1801) IECG email 2006}) 9... h4 10. c3 f6 11.
f4 Kf7 12. Nac2 Be4 13. Nf3 Be7 (13... h3 $142) 14. Nd2 $16 Bxc2 15. Qxc2 f5
16. a5 Nb8 17. b4 Na6 18. Nb3 Nc7 19. Bd2 a6 20. g4 ({Better is} 20. h3) 20...
hxg3 21. hxg3 Qd7 22. Kg2 Rh6 23. Rh1 Rah8 24. Rxh6 Rxh6 25. Rh1 Rxh1 26. Kxh1
Nh8 27. g4 g6 28. Kg2 (28. g5 $142) 28... Kg7 ({Black should play} 28... fxg4
29. Bxg4 Ne8) 29. Be1 (29. Qd1 $16) 29... Nf7 30. gxf5 (30. g5 $16) 30... exf5
$14 31. Qd3 Nd8 32. Qg3 Nde6 33. Bd3 Qc8 34. Nd2 Kf7 35. Qh2 Kg7 36. Bh4 Bxh4
37. Qxh4 Qh8 38. Qf6+ Kh7 39. Qh4+ (39. Qxh8+ $1 $16 Kxh8 40. Kf3) 39... Kg8 (
39... Kg7 $1 $11 40. Qf6+ Kh7 41. Qxh8+ Kxh8) 40. Qxh8+ $16 Kxh8 {[%mdl 4096]
Endgame KBN-KNN} 41. Kf3 Kg7 {[#]} 42. Ke3 (42. Nb3 $1 $16) 42... Kf7 {[#]} (
42... Nb5 $11) 43. Nf3 (43. Nb3 $1 $16) 43... Ng7 44. Ng1 Nge6 {The position
is equal.} 45. Ne2 Kg7 46. Ng3 Kf7 47. Bc2 Nb5 48. Ne2 Kg7 49. Bd3 Nbc7 50. Ng1
Kh6 51. Be2 g5 52. fxg5+ Kxg5 53. Bf1 Nf4 54. Bh3 {Strongly threatening Nf3+.}
Nce6 55. Kf3 Nh5 56. Bg2 Kh4 (56... Nhf4 {feels hotter.} 57. Kg3 Nh5+ 58. Kf2
Nhf4 59. Bf1 Kg4) 57. Nh3 Ng5+ 58. Nxg5 Kxg5 $11 {KB-KN} 59. Bf1 Nf4 60. Ke3
Ne6 61. Be2 Kh4 62. Kf3 Kg5 63. Bd1 Kg6 64. Bc2 Kg5 65. Bb3 Kg6 66. Bd1 Kg5 67.
Be2 Kh4 68. Bf1 Kg5 69. Kg3 Kh5 70. Bd3 Kg5 71. Be2 Nf4 72. Kf3 Ne6 73. Kf2 Nf4
74. Ke3 Ng2+ 75. Kd2 Nf4 76. Ke3 Ng2+ 77. Kf2 Nf4 78. Kf3 Ne6 79. Bf1 Kh4 80.
c4 Kg5 81. cxd5 cxd5 82. Bg2 {Black escapes into a draw.  Weighted Error Value:
White=0.12/Black=0.15} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.28"]
[White "Indjic, Aleksandar"]
[Black "Volokitin, Andrei"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2612"]
[BlackElo "2652"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,102,0,0,0,0,0,0,0,0,0,0,0,0,0,0,11,6,-32,-31,-77,0,0,0,0,0,0,0,-7,-8,
-41,0,0,0,0,0,-81,-81,-81,-82,-80,-77,-79,-68,-85,-72,-64,-14,-20,-34,-51,-38,
-93,-88,-101,-106,-106,-74,-77,-69,-74,-60,-75,-71,-60,-64,-141,-120,-147,-121,
-121,-128,-157,-158,-212,-198,-679,-676,-766,-751,-766,-766,-882,-766,-759,
-743,-735,-727,-607,-382,-1531,-1522,-1091,-991]} 1. e4 c5 2. Nc3 e6 3. Nge2
Nc6 4. g3 d5 5. exd5 exd5 6. d4 Bg4 7. Bg2 {B23: Closed Sicilian: Lines
without g3.} Nxd4 8. h3 Bf3 9. Kf1 {The position is equal.} Qf6 10. Qd3 Bxg2+
11. Kxg2 {[#]} Nxe2 $146 ({Predecessor:} 11... O-O-O 12. Nxd4 cxd4 13. Nb5 Bc5
14. Rd1 Ne7 15. Nxd4 Nc6 16. Be3 Rhe8 17. c3 Re4 18. Nxc6 Bxe3 19. fxe3 Qxc6 {
1-0 (35) Hugentobler,P (2139)-Mueller,W (1949) Zuoz 2019}) 12. Qxe2+ Ne7 13.
Nb5 Rd8 14. Bf4 {Hoping for Rhe1.} d4 15. Kh2 {[#]} Rd7 (15... a6 $1 $17 {
[%cal Ra6b5]} 16. Na3 (16. Nc7+ Kd7 $15) 16... b5) 16. Rhe1 $11 a6 17. Nc7+ Kd8
18. Na8 Rg8 19. a4 g5 20. Bb8 Bg7 {Threatens to win with ...Nc6.} 21. Ba7 Nd5 {
And now ...d3! would win.} 22. Bxc5 Qc6 23. Ba3 (23. Ba7 $11 {keeps the
balance.}) 23... Kc8 $17 24. a5 Kb8 $36 {[%mdl 2048] Black has strong
initiative.} 25. Nb6 Nxb6 26. axb6 Qxb6 27. Qd3 Qg6 28. Re4 f5 29. Re2 f4 30.
Qxg6 hxg6 31. Re6 (31. Kg2 $15) 31... Rc8 32. Rc1 d3 33. c3 fxg3+ 34. Kxg3 Bf8
35. Bxf8 {aiming for Bd6+.} Rxf8 $15 {[%mdl 4096] Endgame KRR-KRR} 36. Rd1 d2
37. Kg2 Rf5 38. Rxg6 (38. Kf1 $15) 38... Rb5 39. b4 Re5 {...Re1 is the strong
threat.} 40. Kf1 Rd3 41. c4 {[#]} Rd4 $1 42. c5 (42. Rg8+ $17 Ka7 43. Rc8)
42... Rxb4 $19 43. c6 $2 (43. Rg8+ Ka7 44. c6 bxc6 45. Rxd2) 43... Rd4 44. cxb7
Kxb7 45. Rf6 a5 {[%cal Ba6a5,Ba5a4][%mdl 32]} 46. Rf3 a4 47. Ra3 Kc6 48. Ra2
Red5 49. Ke2 Kb5 50. f3 $2 (50. Rb1+ Rb4 51. Rg1) 50... Rd3 51. Rb1+ Ka5 {
Weighted Error Value: White=0.43/Black=0.14} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.29"]
[White "Zvjaginsev, Vadim"]
[Black "Demchenko, Anton"]
[Result "1/2-1/2"]
[ECO "A21"]
[WhiteElo "2609"]
[BlackElo "2651"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,71,5,19,22,18,20,17,18,22,22,22,19,17,17,18,20,39,35,35,10,9,10,15,14,
12,18,12,31,19,17,33,4,27,0,0,0,81,81,82,29,43,36,65,15,12,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0]} 1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. a3 Be7 5. d4 d6 6. Nf3 {
A21: English Opening: 1...e5 2 Nc3.} e4 7. Nd2 f5 8. Nb1 Nf6 9. Nxe7 Qxe7 10.
Bg5 O-O 11. Nc3 Be6 12. e3 Nbd7 13. Be2 h6 {[#]} 14. Bxf6 $146 (14. Bf4 {
is interesting.} Nb6 15. d5 Bf7 16. Nb5 Be8 17. Nd4) ({Predecessor:} 14. Bh4
Nb6 15. d5 Bd7 16. Bg3 Be8 17. Rc1 Nbd7 18. Nb5 Nc5 19. Nd4 Bd7 20. b4 axb4 21.
axb4 {1-0 (44) Khmelniker,I (2493)-Mannion,S (2313) Douglas 2016}) 14... Nxf6
15. O-O g5 16. Qd2 a4 17. f3 exf3 18. Rxf3 d5 19. cxd5 Nxd5 20. Re1 Qd7 21. Bc4
c6 22. e4 Nf4 (22... Nxc3 $11 {keeps the balance.} 23. Bxe6+ Qxe6 24. exf5 Qd7
25. bxc3 (25. Qxc3 Rxf5 26. Rxf5 Qxf5 $11) 25... Rxf5) 23. Bxe6+ $16 Qxe6 {[#]}
24. h4 (24. d5 $1 $16 {[%cal Rd5e6]} Qd7 25. d6) 24... Qd6 25. hxg5 hxg5 26.
Rg3 (26. e5 $5 {[%cal Re5d6]} Qh6 27. Ne2 $14) 26... Ne6 {The position is
equal.} 27. Rxg5+ Nxg5 28. Qxg5+ {[%mdl 64] [#] Double Attack} Kf7 29. exf5 {
White wants to mate with Re7+!} Qxd4+ 30. Re3 {[%csl Gf5][%cal Rg5g6]} Rfe8 31.
Qg6+ Kf8 32. Qh6+ Kf7 33. Qh7+ Kf8 $1 34. Qh6+ Kf7 35. Qg6+ Kf8 36. Qh6+ {
Weighted Error Value: White=0.07/Black=0.08} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.30"]
[White "Sindarov, Javokhir"]
[Black "Donchenko, Alexander"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2587"]
[BlackElo "2648"]
[Annotator "TA"]
[PlyCount "144"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,144,2,11,0,8,0,0,0,18,0,16,10,39,50,40,27,34,6,37,33,39,34,76,0,12,10,
13,0,0,-12,-6,-2,-9,-37,-29,-31,-33,-36,0,0,0,0,0,0,14,18,29,26,43,43,123,85,
133,94,107,94,94,94,94,100,94,94,94,68,68,0,94,77,77,77,163,187,494,112,112,
112,375,371,445,425,409,412,1005,983,1574,1452,1179,459,616,538,1046,1160,1222,
776,1148,1133,1121,982,1037,1037,902,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. f3 e6 4. Nc3 Bb4 5. Nge2
Ne7 6. a3 {B12: Caro-Kann: Advance Variation.} Ba5 7. h4 Nd7 {[#]} 8. h5 $146 (
{Predecessor:} 8. Bf4 O-O 9. h5 dxe4 10. h6 g6 11. fxe4 e5 12. dxe5 Bc7 13. e6
fxe6 14. Qd4 {1-0 (28) Escalante Ramirez,B (2423)-Wang,K (2427) Saint Louis
2019}) 8... h6 9. Bf4 Bc7 10. Qd2 dxe4 11. Nxe4 Nd5 12. Bxc7 Qxc7 13. O-O-O b6
14. c4 N5f6 15. N2c3 Nxe4 16. fxe4 (16. Nxe4 $16 O-O 17. c5) 16... e5 17. d5 $1
Nc5 18. Qc2 (18. Kb1 {is more complex.} O-O 19. Qe3 a5 20. Be2 Kh8 21. Rhf1)
18... a5 19. Na4 Nxa4 20. Qxa4 Bd7 21. d6 Qd8 22. c5 O-O 23. Qc2 a4 24. Kb1 Kh8
25. Bc4 f6 26. Qf2 b5 27. Ba2 b4 28. axb4 Qb8 $1 {[%cal Rb8b4]} 29. Qd2 a3 (
29... Qb5 $1 $14) 30. Bb3 $1 $16 Qb5 {Threatening ...Rfb8.} 31. Rhf1 Kh7 32.
Rc1 Rfb8 33. Bc4 $1 {[%cal Rc4b5]} Qa4 {[#]} 34. b3 {[%cal Rb3a4]} Rxb4 35. Ka2
Qa5 36. Bf7 Qb5 ({Not} 36... Rxb3 $2 37. Qxa5 Rb2+ 38. Kxa3 $18) 37. Bc4 (37.
Qc3 $14) 37... Qb7 (37... Qa5 $11) 38. Rf3 Rb8 39. Rg3 $36 {[%mdl 2048] White
is in control.} Be8 (39... Qc8 $16 {keeps fighting.}) 40. Qe2 Bf7 $2 (40... Qc8
{is tougher.} 41. Rc2 Bd7) 41. Bxf7 $2 (41. Qg4 $18 {[%csl Gg3][%cal Rg4g7]
and the rest is easy.} Bxc4 42. d7 (42. bxc4 $2 Rb2+ 43. Ka1 Rb1+ {[%mdl 64]
Back Rank} 44. Rxb1 Qxb1#) 42... Bxb3+ 43. Ka1) 41... Qxf7 42. Rcc3 f5 $2 {
[%mdl 8192]} (42... Kh8 $16) 43. exf5 $18 {[%mdl 64] Discovered Attack} Qxf5 {
[#]} 44. Rcf3 $1 {[%cal Rf3f5]} Qe6 45. Rg6 Qg8 (45... Qd5 $142 46. Qd3 Qxd3
47. Rxd3 e4) 46. Qxe5 Re8 47. Qf5 Kh8 48. Qf7 (48. d7 $142 {White threatens
Rxh6+! and mate.} Re2+ 49. Kxa3) 48... Re2+ 49. Kxa3 Rxb3+ 50. Qxb3 (50. Kxb3 {
gets mated.} Qb8+ 51. Kc4 Re4+ 52. Kd3 Qb1+ 53. Kd2 Qb2+ 54. Kd1 Qd4+ 55. Rd3
Qxd3+ 56. Kc1 Qc3+ 57. Kb1 Re1+ 58. Ka2 Ra1#) 50... Qa8+ 51. Kb4 {Rxh6+! would
kill now.} Re4+ 52. Kc3 Qa1+ 53. Kc2 {White wants to mate with Rf8+.} Re2+ 54.
Kd3 {Threatening mate with Rf8+.} Qa6+ 55. Qc4 $2 ({White has to play} 55. Kd4
$18 Qa1+ 56. Rc3) 55... Rd2+ $1 $11 {The position is equal.} 56. Kxd2 {
Intending Rf8+ and mate.} Qxc4 {[%mdl 4096] Endgame KQ-KRR} 57. Rgg3 {aiming
for Rd3.} (57. d7 {keeps more tension.} Qa2+ 58. Ke3 Qb3+ 59. Kf2 Qb2+ 60. Kf1)
57... Qa2+ $1 58. Kc3 Qa1+ $1 59. Kd3 Qd1+ 60. Kc3 {With the idea Rd3.} Qa1+ $1
61. Kb3 Qd1+ 62. Kb2 Qd2+ 63. Ka3 (63. Ka1 {is interesting.} Qa5+ 64. Kb2 Qb4+
65. Ka2 Qc4+ 66. Kb2) 63... Qa5+ {[%mdl 64] Double Attack} 64. Kb3 Qb5+ $1 65.
Ka2 Qa4+ (65... Qc4+ {seems wilder.} 66. Kb2 Qb4+ 67. Ka2 Qc4+) 66. Kb2 {
And now Rd3 would win.} Qb4+ $1 {[%mdl 64] Double Attack} 67. Rb3 (67. Ka1 {
with more complications.} Qa5+ 68. Kb2 Qb4+) 67... Qd2+ $1 68. Kb1 {Threatens
to win with Rgd3.} Qe1+ 69. Ka2 {Strongly threatening Rgd3.} Qf2+ 70. Ka1 {
Hoping for Rge3.} Qe1+ 71. Ka2 {Black must now prevent Rgd3.} Qf2+ 72. Ka1 {
Rge3 is the strong threat.} Qe1+ {Blacks defense is rewarded with a draw. 
Weighted Error Value: White=0.34/Black=0.31} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.31"]
[White "Kuybokarov, Temur"]
[Black "Tari, Aryan"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2549"]
[BlackElo "2646"]
[Annotator "TA"]
[PlyCount "157"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,157,43,36,52,48,49,44,39,52,37,48,36,35,-59,-40,-77,-71,-105,-105,
-105,-112,-103,-110,-120,-79,-91,-83,-86,-99,-95,-91,-103,-47,-54,-48,-45,-67,
-56,-58,-88,-92,-73,0,0,0,0,47,0,12,-33,-33,-33,-33,-36,-42,-47,-25,-81,-25,
-25,-25,-27,-25,-25,0,-27,-25,-25,-25,-25,-25,-25,-25,-25,-25,-25,-25,-25,-25,
-25,-25,-29,0,0,0,-12,-12,-74,-74,-74,-74,-74,-74,-74,-74,-74,-74,-74,0,-74,
-74,-149,-149,-149,-20,-222,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O
Nxe4 6. d4 Be7 7. Re1 b5 8. Rxe4 {C84: Closed Ruy Lopez: Unusual White 6th
moves.} d5 9. Nxe5 Nxe5 10. Rxe5 {White is slightly better.} bxa4 11. Nc3 {
11.Qe2 is more fashionable.} O-O {[#]} 12. Nxd5 $146 ({Predecessor:} 12. Rxd5
Bd6 13. Bf4 Be6 14. Bxd6 cxd6 15. Rh5 g6 16. Rh6 a3 17. bxa3 Rc8 18. Ne4 {
1/2-1/2 (42) Shirov,A (2662)-Martinez Alcantara,J (2620) chess.com INT 2020})
12... Bd6 13. Rh5 ({White should try} 13. Re1 $14) 13... g6 $15 14. Re5 Bb7 $1
15. c4 Bxe5 16. dxe5 Bxd5 17. cxd5 {[#]} Rb8 $1 18. Be3 Rxb2 19. Rc1 Qd7 20. d6
cxd6 21. exd6 Rd8 ({Don't play} 21... Rxa2 $6 22. Qd4 $11) 22. Bh6 f6 ({Reject
} 22... Rxa2 $6 23. Qd4 $11) (22... Qa7 $17 23. Qe1 Qd4) 23. Qd5+ $1 Qf7 24.
Qa5 Rbb8 25. Qc7 Qd7 26. Qc4+ {[#]} Kh8 $1 {Hoping for ...Rbc8.} 27. Qd4 Qf7 (
27... Qxd6 $17 28. Qxd6 Rxd6) 28. h4 $11 Rd7 29. Qxa4 Qe6 30. Bf4 (30. Qxa6 $5
{[%cal Rc1c8]} Re8 31. Bf4 $14) 30... Qf5 31. Bg3 Rb1 32. Qc6 Rxc1+ 33. Qxc1
$15 {[%mdl 4096] Endgame KQR-KQB} Kg7 34. Kh2 h5 35. a4 (35. Qc8 $11) 35... Qd5
(35... g5 $17 36. hxg5 fxg5 37. Qc3+ Kg6) 36. Qc8 $11 Qb7 (36... Ra7 {feels
hotter.} 37. Qe8 Rf7 38. Bf4 Kh7 39. f3 a5) 37. Qc5 Rd8 38. Qe3 Rd7 {And now ..
.Qb4 would win.} 39. Qc5 Rf7 40. Qc4 a5 41. Qc5 Qb4 42. Qc6 Qd4 {Threatens to
win with ...g5.} 43. Qe8 Qd5 44. Bf4 Kh7 45. f3 Rg7 46. Bg3 Qd4 (46... Qf5 {
keeps more tension.} 47. Qc6 Rd7 48. Qc8 Kg7 49. Qc3 Qd5) 47. Qd8 Qxa4 (47...
Ra7 {looks sharper.} 48. Qf8 Rd7 49. Kh3 Rg7 50. Kh2 Ra7) 48. Qxf6 Qe8 49. Qd4
a4 50. Bf4 (50. Be5 $11 Rb7 51. Qd5) 50... a3 $17 51. Bd2 a2 52. Bc3 {[%csl
Gc3][%cal Rd4g7]} Rd7 53. Ba1 Qf8 54. Kh3 Qc8 {aiming for ...Rxd6+.} ({But not
} 54... Rxd6 55. Qa7+ Kg8 56. Qxa2+ Kh7 57. Qa7+ Kh6 58. Qe3+ Kh7 59. Qa7+ Kh6
60. Qe3+ Kh7 61. Qa7+ $11) 55. Kg3 Qe8 56. Kh2 $1 Qg8 57. f4 (57. Kg3 $142)
57... Qf8 58. g3 Kh6 ({Better is} 58... Rxd6 $17 59. Qa7+ Kh6 60. Qxa2 Qd8) 59.
Qb2 (59. Qe3 $1 $11 Kh7 60. Qd4) 59... Qg8 $2 ({Black should play} 59... Rxd6
$19 60. Qxa2 Qd8) 60. Qe5 $11 {The position is equal.} Rf7 61. Qe6 Rf8 62. f5
Re8 63. Qf6 {Intending d7 and mate.} Re2+ $1 64. Kh3 {d7 would kill now.} Re1
65. Kh2 Re2+ 66. Kg1 Re1+ 67. Kf2 Rxa1 $1 68. Qxa1 {KQ-KQ} Qf7 69. Qh8+ Qh7 70.
Qxh7+ (70. Qd4 {is more complex.} Qd7 71. Qd2+ Kg7 72. Qb2+ Kh6 73. Qxa2 Qxf5+
74. Kg2) 70... Kxh7 71. fxg6+ Kxg6 {K3P-KPP} (71... Kg7 $5 72. d7 $8 a1=Q $11)
72. d7 a1=Q {( -> ...Qd4+)} 73. d8=Q {Strongly threatening Qg5+. KQ-KQ} Qb2+
74. Kf3 (74. Ke1 {is interesting.} Qc3+ 75. Kf2 Qb2+) 74... Qc3+ 75. Ke4 Qe1+
76. Kf3 Qf1+ 77. Ke3 {Qg5+ is the strong threat.} Qe1+ 78. Kf3 {Black must now
prevent Qg5+.} Qf1+ 79. Ke3 {Weighted Error Value: White=0.16/Black=0.14}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.32"]
[White "Chigaev, Maksim"]
[Black "Henriquez Villagra, Cristobal"]
[Result "0-1"]
[ECO "B32"]
[WhiteElo "2639"]
[BlackElo "2608"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,74,19,23,25,22,23,26,28,23,26,27,17,0,0,3,30,0,0,0,0,-20,-9,0,0,0,12,
26,52,-40,-41,-50,-37,-49,-33,-24,-39,-60,-46,-82,-82,-83,-88,-77,-79,-80,-79,
-416,-404,-403,-410,-416,-410,-393,-400,-696,-701,-694,-689,-677,-663,-1992,
-2458]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be6 7. N1c3
a6 8. Na3 g6 {8...Be7 is vanishing. B32: Sicilian: Löwenthal and Kalashnikov
Variations.} 9. Be2 Bg7 10. O-O Rc8 {White has an edge.} 11. Nc2 Nf6 12. Be3
O-O 13. b3 b5 14. cxb5 Ne7 {[%cal Bc6e7,Be7d5,Bd5c3][%mdl 32] [#]} 15. Na4 $146
({Predecessor:} 15. Bd2 axb5 16. Bxb5 Qb6 17. Na3 Rxc3 18. Bxc3 Nxe4 19. Bb2 d5
20. Be2 d4 21. Nc4 Bxc4 22. Bxc4 {0-1 (35) Anand,V (2753)-Maghsoodloo,P (2676)
Chess.com INT 2020}) 15... Nxe4 16. bxa6 Nd5 17. Bc4 Ndc3 18. Nxc3 Nxc3 19. Qd2
({Don't play} 19. Qd3 e4 $17) 19... Ne4 20. Qb4 {Threatens to win with Bxe6.}
Rb8 21. Qa3 ({White should play} 21. Qe1 $14) 21... d5 $1 $15 {[%cal Rd5c4]
[%mdl 1024] Black has compensation.} 22. a7 Ra8 23. Bd3 Nc3 {...e4 is the
strong threat.} 24. Bc5 Re8 (24... e4 $5 25. Ba6 $8 (25. Bxf8 $2 Bxf8 26. b4
exd3 $19) 25... Qc7 $11) 25. Qb4 d4 26. Rfe1 Qd7 27. Na3 {[#]} Rec8 $1 28. Nc4
Bxc4 29. Bxc4 e4 30. f3 $2 {[%mdl 8192] Now White is beyond hope.} (30. a4 $17)
30... d3 $19 {White must now prevent ...Rxc5!} 31. Be3 Rxa7 32. fxe4 Rb7 33.
Qa5 {With the idea e5.} d2 34. Red1 (34. e5 $142 dxe1=B 35. Rxe1) 34... Nxe4 {
Hoping for ...Bd4.Black is clearly winning.} 35. Qd5 Bxa1 36. Qxe4 {[#]} Re8 $1
37. Qb1 (37. Qd5 Qxd5) 37... Bd4 {Weighted Error Value: White=0.49/Black=0.03}
0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.33"]
[White "Rakhmanov, Aleksandr"]
[Black "Yakubboev, Nodirbek"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2657"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,61,18,28,27,17,27,14,14,0,20,10,22,0,0,7,11,0,0,0,0,0,0,0,34,32,26,
22,36,-15,0,-13,-8,-13,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4.
d4 Bg4 5. O-O Nbd7 6. Nbd2 e6 7. Re1 Be7 8. e4 dxe4 9. Nxe4 O-O 10. c3 Nxe4 11.
Rxe4 Bf5 {D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3
Bf4.} 12. Re1 a5 13. a4 {has lost popularity (13.Bf4).} h6 {[#]} 14. Qe2 $146 (
{Predecessor:} 14. Nd2 Re8 15. Nc4 Nb6 16. Ne5 Nd7 17. Ng4 Bh7 18. Ne3 Bf8 19.
Bd2 Be7 20. Qb3 {1-0 (67) Gabuzyan,H (2577)-Beshukov,S (2385) Rome 2016}) 14...
Qb6 15. Nd2 Qa6 16. Nc4 Nb6 17. b3 Rfd8 18. Ba3 Bxa3 19. Nxa3 Qxe2 20. Rxe2 Nd5
21. Rc1 b5 22. axb5 cxb5 23. c4 bxc4 24. Nxc4 (24. bxc4 $14 Rac8 25. c5) 24...
a4 {The position is equal.} 25. bxa4 Rxa4 {[#] aiming for ...Rc8.} 26. Ne3 Ne7
27. d5 exd5 28. Nxf5 Nxf5 29. Re5 {[%mdl 64] [#] Double Attack} g6 30. Rxd5
Rxd5 31. Bxd5 {A rather calm draw.  Weighted Error Value: White=0.09/Black=0.06
} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.34"]
[White "Matlakov, Maxim"]
[Black "Ivic, Velimir"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2682"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,57,19,29,35,43,35,27,28,17,45,17,25,12,22,20,18,18,22,4,27,28,18,15,
34,22,0,0,0,0,113,123,248,246,333,325,462,419,545,549,566,566,565,558,557,554,
560,531,528,522]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5. d4 cxd4 6. Nxd4
Ng6 {is now more promising than 6...Qb6. B30: Sicilian: 2...Nc6 3 Bb5, lines
without ...g6.} 7. Be3 Be7 8. c3 $5 {[%mdl 4] Exploring less charted territory.
} O-O {White has an edge.} 9. Nd2 Bg5 {[#]} 10. Qe1 $146 (10. Nc2 {keeps more
tension.} Bxe3 11. Nxe3 d5 12. exd5 exd5 13. Nf3) ({Predecessor:} 10. Bxg5 Qxg5
11. N2f3 Qc5 12. Qa4 a6 13. b4 Qh5 14. Rfe1 Nxd4 15. Nxd4 d6 16. Rad1 {1/2-1/2
(48) Kobalia,M (2594)-Sjugirov,S (2661) Moscow 2021}) 10... Nxd4 11. cxd4 Bxe3
12. Qxe3 d6 13. Rfc1 Bd7 14. Bf1 Rc8 15. d5 $36 {[%mdl 2048] White has some
pressure.} exd5 16. exd5 Qf6 17. Ne4 Qe5 18. Re1 f5 19. Nd2 Qf6 (19... Qxe3 $11
20. Rxe3 Rc7) 20. Qxa7 $16 Rc2 {[#] A mistake that costs the game.} (20... Be8
$16 21. Rad1 (21. Qxb7 Rc2 $16) 21... Nf4) 21. Nc4 $1 $18 Nh4 22. Qxb7 Rxc4 (
22... Ba4 {was necessary.} 23. Qe7 Qd4) 23. Bxc4 Qg5 {[%csl Gh4][%cal Rg5g2]}
24. Bf1 {White is clearly winning.} Nf3+ 25. Kh1 Nxe1 26. Qxd7 Nc2 27. Rd1 Qf4
28. Qe6+ Kh8 29. Qe2 {Weighted Error Value: White=0.03/Black=0.33} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.35"]
[White "Praggnanandhaa R"]
[Black "Gelfand, Boris"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2618"]
[BlackElo "2680"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,86,16,23,31,14,17,13,17,25,18,30,10,15,21,20,33,18,29,20,49,29,30,35,
29,14,23,14,22,22,22,13,17,7,9,3,6,2,0,0,104,107,120,104,107,95,342,342,345,
346,460,57,92,89,83,0,0,0,0,0,0,-220,-227,-349,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2.
Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5. Re1 a6 6. Bf1 d5 7. exd5 Nxd5 8. d4 Nf6 9. Be3
Be7 {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} 10. c4 O-O 11. Nc3 {
[#]} b6 $146 ({Predecessor:} 11... cxd4 12. Nxd4 Ne5 13. h3 Bd7 14. Bf4 Ng6 15.
Bg3 Qb6 16. Nb3 Bc6 17. Qd4 Qb4 {1/2-1/2 (63) Aronian,L (2773)-Carlsen,M (2863)
Lichess.org INT 2020}) 12. Qd2 Bb7 13. Rad1 cxd4 14. Nxd4 Ne5 15. Nc2 Qc8 16.
Qe2 Ned7 17. Bf4 Qc6 18. b4 Rad8 19. Nd4 Qc8 20. Nxe6 fxe6 21. Qxe6+ Rf7 22. c5
$1 {Strongly threatening Bc4.} Rdf8 23. Bc4 {And now Qxe7 would win.} Kh8 24.
Qh3 bxc5 25. b5 Bd8 26. Bd6 Ba5 $1 27. a4 Qa8 (27... axb5 $11 {remains equal.}
28. axb5 Qa8) 28. Bxf8 $16 Rxf8 29. Re7 Nb6 30. bxa6 $1 (30. Qg3 $2 Nh5 $19)
30... Bxa6 (30... Bc6 $16 31. Bb5 (31. Qg3 Nh5 $17) 31... Bxc3 32. Qxc3 Nbd5
33. Rxd5 Bxd5) 31. Bxa6 $18 ({Avoid the trap} 31. Qg3 $2 Nh5 $19) 31... Qxa6
32. Qg3 {[%csl Ge7][%cal Rg3g7]} Nh5 {[#]} 33. Qf3 {[%mdl 512]} Qc8 (33... Nf6
34. Qg3) 34. Qxh5 Bxc3 35. Rd6 (35. a5 $1 $16 {[%cal Ra5b6]} Nc4 36. a6) 35...
Bd4 $1 $11 {[%cal Rd4f2]} 36. Rde6 $40 {[%mdl 128] Black needs to defend
precisely.} ({But not} 36. Rxb6 $2 Rxf2 37. Re8+ Rf8+ 38. Kh1 Rxe8 $19) 36...
Bxf2+ 37. Kh1 {Threatening mate with Rh6!} Qa6 {[%cal Ra6f1]} 38. Qd1 (38. Re2
$11 {and White is okay.} Qxa4 39. Qe8 {[%mdl 64] Back Rank}) 38... Qxa4 $19 39.
Qf1 {[#]} (39. Qxa4 $142 Nxa4 40. Re8 {[%mdl 64] Back Rank}) 39... Nd7 $2 (
39... Qa8 $1 $19 40. Qb1 (40. Rxb6 $2 Bh4 $19 {[%mdl 64] Discovered Attack}) (
40. h3 Nd5) 40... Nd5) 40. Re8 $1 $11 {The position is equal.} Qf4 {Threatens
to win with ...Kg8.} 41. Re4 $1 {[%cal Re4f4]} Qf6 {aiming for ...Bd4.} (41...
Qf7 $5 42. R4e7 $8 Qf4 $11) 42. R4e6 $1 {[%cal Re6f6]} Qf4 {...Kg8 is the
strong threat.} (42... Qf7 $5 43. R6e7 $8 Qf6 $11) 43. Re4 $1 {[%cal Re4f4]}
Qf6 {Weighted Error Value: White=0.29/Black=0.34} (43... Qf7 $5 44. R4e7 $8 Qf4
45. Re4 $11) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.36"]
[White "Kollars, Dmitrij"]
[Black "Tabatabaei, M. Amin"]
[Result "0-1"]
[ECO "B69"]
[WhiteElo "2621"]
[BlackElo "2639"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,100,35,43,51,33,59,31,97,86,100,75,123,52,67,14,56,22,45,0,0,-60,-75,
-69,-65,-139,-141,-153,-135,-162,-150,-119,-126,-120,-125,-123,-123,-155,-152,
-163,-119,-172,-151,-134,-91,-186,-196,-197,-196,-283,-269,-290,-298,-303,-301,
-368,-364,-428,-419,-412,-344,-314,-309,-735,-722,-474,-335,-611,-609,-609,
-593,-586,-559,-555,-516,-690,-681,-657,-649,-593,-569]} 1. e4 c5 2. Nc3 Nc6 3.
Nf3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 Be7 10.
Nf3 b5 11. Bxf6 gxf6 12. f5 Qa5 {[#] Strongly threatening ...b4. B69: Sicilian:
Richter-Rauzer: 7...a6 8 0-0-0 Bd7 9 f4 Be7 10 Nf3 b5 11 Bxf6.} 13. Kb1 h5 $1 {
[%mdl 4] is now more promising than 13...Rc8.} 14. Bd3 {[#]} b4 $146 (14...
O-O-O $14) ({Predecessor:} 14... O-O-O 15. Qe3 Kb7 16. Ne2 Qb6 17. Qd2 h4 18.
Nf4 h3 19. Nxh3 e5 20. Nf2 Bc8 {1-0 (65) Shomoev,A (2563)-Gabrielian,A (2448)
Cheliabinsk 2021}) 15. Ne2 $16 e5 16. Bc4 Rc8 17. Bd5 (17. Qd3 $16) 17... Qb6
18. c3 (18. Qe1 $14) 18... a5 19. cxb4 axb4 20. Rc1 Bf8 $1 21. Bb3 ({White
should play} 21. Qd1 $11) 21... Na5 $1 $15 22. Rxc8+ Bxc8 23. Bd5 (23. Qd5 $15
Nxb3 24. Qxb3) 23... Bh6 24. Qd1 Ke7 25. Nc1 Ba6 26. Nd2 Bxd2 27. Qxd2 Nc4 28.
Bxc4 Bxc4 29. Rd1 Rg8 30. g3 {[#]} Rg4 $1 31. Re1 (31. Qc2 $17 Bb5 32. Re1)
31... Ba6 32. Nb3 Bb7 33. Qc2 (33. Qg2 $17) 33... h4 $19 34. gxh4 Rxh4 35. Nd2
(35. Kc1 $142) 35... Rxh2 36. Nc4 Rxc2 37. Nxb6 {[%mdl 4096] Endgame KRB-KRN}
Rf2 38. Kc1 Rf4 39. Nd5+ Bxd5 40. exd5 {KR-KR} b3 41. a3 Rxf5 42. Re3 $2 (42.
Kd2) 42... Rf1+ 43. Kd2 Rf2+ 44. Kc1 $2 (44. Kc3) 44... Rc2+ {Black is clearly
winning.} 45. Kb1 Rd2 {[%cal Rd2d1]} 46. Rxb3 Rxd5 47. a4 e4 48. Ra3 Kd7 49. a5
{If only White now had time for a6....} Kc7 50. a6 {Black must now prevent a7.}
Kb8 {Weighted Error Value: White=0.48/Black=0.14} ({Weaker is} 50... Rd3 51.
Ra4 $11) 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.37"]
[White "Bartel, Mateusz"]
[Black "Moussard, Jules"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "2597"]
[BlackElo "2632"]
[Annotator "TA"]
[PlyCount "108"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,108,0,0,-14,10,10,9,0,18,0,39,22,41,9,2,0,6,0,2,11,21,18,39,45,49,39,
34,32,58,53,58,47,52,35,25,40,32,25,69,12,47,36,48,14,14,8,7,0,0,-11,-13,-58,
-57,-59,0,-58,-13,-26,-22,-56,-56,-56,-45,-62,-51,-180,-175,-172,-159,-183,
-153,-200,-198,-270,-263,-289,-279,-288,-268,-329,-319,-329,-327,-293,-280,
-393,-384,-377,-365,-412,-401,-638,-659,-790,-774,-649,-631,-1027,-968,-901,
-878]} 1. e4 c6 2. Nf3 d5 3. d3 dxe4 4. dxe4 Qxd1+ 5. Kxd1 Nf6 6. Nbd2 {
B10: Caro-Kann: 2 d3 and 2 c4.} g6 7. Bc4 Nbd7 {[#]} 8. Re1 $146 {The position
is equal.} ({Predecessor:} 8. a4 a5 9. h3 Bh6 10. Re1 Nc5 11. b3 O-O 12. Ba3
Nfd7 13. c3 Re8 14. Kc2 {1/2-1/2 (145) Demchenko,A (2599)-Olsen,F (2398)
Tornelo INT 2021}) 8... Bg7 9. a4 a5 10. h3 Nc5 11. Ne5 O-O 12. c3 Bh6 13. Kc2
Kg7 14. f3 Nh5 15. g4 Nf4 16. Nb3 Nxb3 17. Bxb3 f6 18. Nc4 Ng2 19. Bxh6+ Kxh6
20. Rg1 Nf4 21. h4 Be6 22. Nb6 Bxb3+ 23. Kxb3 Ra6 24. Nc4 (24. g5+ $14 fxg5 25.
Nd7) 24... Rfa8 25. Rgd1 b5 26. Ne3 (26. Na3 {is interesting.} Ng2 27. h5 gxh5
28. Rh1 bxa4+ 29. Kc2) 26... R6a7 27. Kc2 Kg7 28. axb5 cxb5 29. Nd5 Ng2 30. Rd3
Nxh4 31. f4 g5 (31... Rc8 $15) 32. f5 (32. Nb6 $1 $11 Rb8 33. Nd7) 32... h5 33.
gxh5 Kh6 34. Rg3 Rd8 35. Rd3 a4 36. Rad1 Rd6 (36... Rdd7 {with more
complications.} 37. Kd2 Ng2 38. Ra1 Rd6 39. Kc2 Nh4) 37. Ne3 {This move loses
the game for White.} (37. Rh1 $15) 37... Rxd3 $19 38. Rxd3 {[%mdl 4096]
Endgame KRN-KRN} Nf3 {[%cal Rf3e1]} 39. Rd8 Ne5 40. Rh8+ Kg7 41. Rb8 (41. Re8
$142) 41... g4 $1 42. Rxb5 g3 $1 43. Rd5 {[#]} a3 $1 {[%cal Ba4a3,Ba3a2][%mdl
32]} 44. Rd1 {[#]} a2 {[%cal Ra2a1]} 45. Ra1 {intending Nf1.} Kh6 46. b4 Kxh5
47. b5 (47. Kb3 $142) 47... Kg5 48. b6 Ra8 49. c4 Kf4 {[%mdl 64] Double Attack}
50. Nd5+ (50. Ng2+ $142 Kxe4 51. Kc3) 50... Kxe4 {Black is clearly winning.}
51. Kb3 g2 52. Nc3+ Kd4 53. Nxa2 Nxc4 {aiming for ...Ra3+.} 54. b7 Na5+ {
Weighted Error Value: White=0.35/Black=0.07} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.38"]
[White "Nguyen, Thai Dai Van"]
[Black "Pichot, Alan"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2577"]
[BlackElo "2628"]
[Annotator "TA"]
[PlyCount "143"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,143,21,15,-2,16,18,80,67,72,91,69,67,84,33,33,15,25,12,11,9,15,3,14,4,
6,0,2,2,11,0,6,0,0,0,0,0,0,0,0,0,0,0,10,0,0,0,56,56,56,56,56,54,42,42,81,79,
158,79,177,140,489,454,398,271,276,0,0,0,265,247,286,0,301,316,131,80,80,0,117,
107,115,250,226,175,174,108,108,122,776,1676,1239,750,5160,80,1061,1061,1020,
970,436,0,0,0,439,648,479,327,457,414,999,1239,2969,0,2015,0,2535,1576,1485,
1050,29981,12841,12841,12839,12841,0,12841,12841,12842,12842,12843,12843,12843,
12844,29992,29993,29993,29994]} 1. c4 e5 2. g3 c6 3. Nf3 e4 4. Nd4 d5 5. d3
Bb4+ 6. Bd2 {[#] A20: English Opening: 1...e5.} Bxd2+ $146 (6... Be7 {looks
sharper.} 7. dxe4 dxe4 8. Nc2 f5 9. Nc3 Nf6) ({Predecessor:} 6... Qb6 7. Bxb4
Qxb4+ 8. Qd2 Qxd2+ 9. Nxd2 exd3 10. e4 dxe4 11. Nxe4 Ke7 12. O-O-O Nf6 {
1-0 (34) Rapport,R (2720)-Cornette,M (2573) Karlsruhe 2016}) 7. Qxd2 dxc4 (7...
exd3 $11 {keeps the balance.} 8. Qxd3 dxc4 9. Qxc4 Nf6) 8. dxe4 $16 {White is
better.} Nf6 9. Bg2 O-O 10. O-O Re8 11. Rd1 (11. Nc3 $16) 11... Nxe4 $14 12.
Qf4 Qe7 13. Nd2 Nxd2 14. Rxd2 c3 15. bxc3 Na6 16. Rb1 Nc5 17. h4 h6 18. Nb3
Nxb3 19. Rxb3 Be6 20. Rb4 Red8 21. a4 a5 22. Rbd4 Rxd4 23. Qxd4 Qa3 24. Kh2 Re8
25. Rd3 Bf5 26. Re3 Rxe3 27. Qxe3 Qa2 ({Black should play} 27... Bc2 $11) 28.
Qe5 g6 29. Qb8+ Kg7 30. Qxb7 Qxe2 31. Qb6 Qd2 32. Qc5 Bd7 (32... Be6 $142) 33.
Bf3 (33. Qxa5 $142 {aiming for Qd8.} Qxf2 34. Qd8) 33... h5 (33... g5 $16) 34.
Kg2 Bg4 $2 {[%mdl 8192]} (34... Qd3 $16 {is a better chance.}) 35. Bxg4 $18
hxg4 36. Qxc6 {[%mdl 4096] Endgame KQ-KQ} Qd3 37. Kh2 Qc2 $1 {[%cal Rc2f2]} 38.
Kg2 Qd3 39. c4 Qc2 40. c5 $2 (40. Qe8 $1 $18) 40... Qc4 $2 {[%mdl 8192]} (40...
Qf5 $1 $11) 41. Qb5 $1 {[%cal Rb5c4]} Qe4+ ({Better is} 41... Qd5+ $18 42. Kg1
Qd1+ 43. Qf1 Qxa4) 42. Kg1 (42. Kh2 $142 $1) 42... Qe1+ $16 43. Kg2 {Strongly
threatening Qc4.} Qe4+ 44. Kh2 $1 Qc2 45. Kg1 Qd1+ {[#]} 46. Qf1 $1 {[%cal
Rf1d1]} Qxa4 47. Qc1 Qc6 48. Qc3+ Qf6 $2 {[%mdl 8192]} (48... Kf8 $16) 49. Qxa5
$18 Qd4 50. Qb5 Qc3 51. Qc6 $2 (51. c6 $18 {And now Qb6 would win.} Qe1+ 52.
Kg2 Qe4+ 53. Kg1 Qe1+ 54. Kg2 Qe4+ 55. Kg1 Qe1+) 51... Qe5 $2 {[%mdl 8192] [#]}
(51... Qe1+ $16 52. Kg2 Qe5) 52. Qd6 $1 {[%cal Rd6e5]} Qe1+ 53. Kg2 Qe4+ 54.
Kg1 Qe1+ 55. Kg2 Qe4+ {Black is on the road to losing.} 56. Kh2 Qc2 57. Qd4+
Kh7 {and the idea ...Kg8 leaves Black hopeful.} 58. Kg2 f5 (58... Qf5 $142 59.
Qc4 Qf3+ 60. Kg1 Qd1+ 61. Kh2 Qf3) 59. Qd7+ Kh6 60. Qd4 {[%cal Rd4h8]} Kh7 61.
Qd7+ Kh6 $1 62. Qe8 {[%cal Re8h8]} Kg7 63. c6 {[%cal Bc5c6,Bc6c7][%mdl 32]} Qa4
64. Qe7+ (64. Qe5+ $142 Kh7 65. Qc7+ Kg8 66. Qc8+ Kf7 67. Qb7+ Kf8 68. c7 Qe8
69. c8=Q) 64... Kh6 65. Qg5+ Kg7 66. Qe7+ Kh6 $1 67. Qc5 f4 68. c7 {Intending
Qg5+! and mate.} Qe4+ 69. Kg1 Qe1+ 70. Kh2 Qf1 71. Qf8+ Kh7 72. Qf7+ {Weighted
Error Value: White=0.48/Black=0.39} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.39"]
[White "Martirosyan, Haik M."]
[Black "Sethuraman, S.P.."]
[Result "1/2-1/2"]
[ECO "D44"]
[WhiteElo "2624"]
[BlackElo "2620"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,118,12,16,19,23,16,20,15,11,20,12,23,26,17,17,16,17,17,18,17,21,10,
16,16,23,16,35,4,8,9,21,6,32,27,78,74,78,80,80,80,80,79,80,80,75,74,77,80,75,
70,70,70,74,74,74,39,37,38,33,27,32,27,27,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
12838,12839,12839,12839,12838,0,0,0,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5
dxc4 6. a4 b5 7. axb5 {D44: Semi-Slav: Botvinnik System.} cxb5 8. Nxb5 Qb6 $1 {
[%cal Rb6b5]} 9. Na3 {The position is equal.} ({Don't go for} 9. Qa4 $2 Bd7 $19
) 9... Bxa3 10. Qa4+ Nc6 $1 11. Qxa3 ({Much worse is} 11. Rxa3 Bd7 $15) 11...
Ne4 12. e3 f6 13. Bf4 Nb4 {And now ...Nc2+ would win.} 14. Rc1 Ba6 $1 {[#]} 15.
Bc7 $1 Qxc7 16. Qxb4 {Black must now prevent Qa4+.} Rb8 17. Qa4+ Bb5 18. Qa3
Qe7 {[#]} 19. Qa5 $146 (19. Nd2 {keeps more tension.} Nxd2 20. Kxd2 Rb6 21.
Bxc4 Qb7 22. b3) ({Predecessor:} 19. Nd2 Qxa3 20. bxa3 Nd6 21. Bxc4 Nxc4 22.
Nxc4 Bxc4 23. Rxc4 Rb1+ 24. Ke2 Rxh1 25. Rc8+ {1/2-1/2 (37) Xu,Z (2515)-Wei,Y 
(2725) Liaocheng 2021}) 19... Nd6 20. Nd2 {[%cal Rf1c4]} O-O 21. Nxc4 Rfc8 22.
b3 Kf8 (22... Bc6 $11 {keeps the balance.}) 23. Be2 $16 Bxc4 24. bxc4 Nxc4 25.
Bxc4 {0-0 is the strong threat.} ({Inferior is} 25. Rxc4 Rxc4 26. Bxc4 Rb1+ 27.
Ke2 Rxh1 $17) 25... Qb4+ 26. Qxb4+ Rxb4 {[#]} 27. Kd2 $1 Rbxc4 (27... Rcxc4 28.
Rxc4) 28. Rxc4 Rxc4 {[%mdl 4096] Endgame KR-KR} 29. Ra1 Rc7 30. Ra6 Kf7 31. g4
g5 32. Kd3 Rb7 33. Ke4 Re7 34. h3 Kg6 35. f4 gxf4 36. exf4 h5 37. gxh5+ Kxh5
38. f5 exf5+ 39. Kxf5 {Hoping for Ra5.} Rd7 40. Ra4 Rd6 41. Rxa7 {[%cal Ra7h7]}
(41. Ke4 {seems wilder.} Re6+ 42. Kd3 Re1 43. d5 Kg6 44. Kd4) 41... Kh4 42.
Rh7+ (42. Ra1 {looks sharper.} Rxd4) 42... Kg3 43. Ke4 {Threatens to win with
d5.} (43. h4 {keeps more tension.} Rxd4 44. Kxf6) 43... Re6+ 44. Kd5 (44. Kd3 {
is more complex.} f5 45. h4 f4 46. h5 f3 47. h6) 44... Ra6 45. h4 f5 $2 {
[%mdl 8192]} (45... Kf4 $11) 46. Ke5 $1 $18 f4 47. Rg7+ Kf3 48. d5 $2 (48. Rf7
$18 Kg3 49. Rxf4 Ra5+ 50. Ke4) 48... Rh6 $1 $11 49. d6 (49. Rf7 {with more
complications.} Rxh4) 49... Rxh4 50. Rf7 {Mate.} Rh5+ 51. Rf5 Rxf5+ 52. Kxf5 {
KP-KP} Kg3 $1 53. d7 f3 54. d8=Q f2 55. Qd3+ Kg2 56. Qd2 {[#]} Kh1 $1 57. Qe2
Kg1 58. Qe3 Kg2 59. Qd2 {[#]} Kh1 $1 60. Qxf2 {Weighted Error Value: White=0.
10/Black=0.02} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.40"]
[White "Suleymanli, Aydin"]
[Black "Brkic, Ante"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2541"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,78,-10,-14,-21,39,-8,-3,-8,-11,-19,-12,-7,-13,-8,-3,-42,0,0,0,-7,0,-5,
23,45,50,46,51,23,44,25,25,-34,-28,-46,-62,-81,-85,-127,-125,-159,-152,-146,
-93,-115,-113,-160,-159,-153,-145,-150,-138,-242,-244,-265,-271,-345,-345,-325,
-332,-323,-310,-386,-427,-476,-472,-466,-471,-443,-381,-675,-330]} 1. d4 Nf6 2.
c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 b5 6. e4 {E20: Nimzo-Indian: 4 g3 and 4 f3.} d6
(6... O-O $11) 7. Nge2 bxc4 {Threatening ...exd5.} 8. Nf4 {The position is
equal.} e5 9. Nfe2 Nbd7 10. Ng3 Nb6 11. Be2 Ng8 12. h4 {[#]} Ne7 $146 (12... f5
$5) ({Predecessor:} 12... f5 13. f4 Bxc3+ 14. bxc3 Nf6 15. O-O O-O 16. fxe5
dxe5 17. exf5 Qxd5 18. Bf3 Qxd1 19. Rxd1 {1/2-1/2 (31) Oreopoulos,K (2491)
-Mende,I (2440) ICCF email 2018}) 13. h5 h6 14. f4 exf4 15. Bxf4 g5 16. hxg6 $1
Nxg6 17. Qd2 (17. Bxh6 Rxh6 $1 {[%mdl 512]} 18. Rxh6 Qg5 $17) 17... Qe7 18. O-O
(18. Bxh6 Qe5 $17) (18. Rxh6 Rxh6 19. Bxh6 Na4 $1 $11) 18... Bd7 $1 19. Bxh6 {
Strongly threatening Bg7.} O-O-O 20. Nh5 ({White should play} 20. Bg7 $11)
20... Bxc3 $15 21. bxc3 Qxe4 (21... Qh4 $6 22. Bg5 $14) 22. Bg7 Rhe8 (22...
Nxd5 $6 23. Bf3 $11) (22... Qxd5 23. Qxd5 Nxd5 24. Nf6 $11) 23. Rf2 Qe3 $1 {
[%cal Re3d2]} ({Not} 23... Nxd5 $2 24. Bf3 $18) (23... Qxd5 $6 24. Qxd5 Nxd5
25. Bxc4 $11) 24. Bf1 Qxd2 25. Rxd2 Re3 (25... Rg8 $142 $1 26. Be2 Nf4 $1 {
[%mdl 576] Deflection} 27. Nxf4 Rxg7) 26. Kf2 Re4 27. a4 Rg8 {Hoping for ...
Rh4.} ({Stronger than} 27... Bxa4 28. g3 $11) ({Much worse is} 27... Nxa4 $6
28. Kg1 $11) 28. a5 Na4 {aiming for ...Rh4.} 29. g3 {And now Nf6 would win.}
Ne5 30. Ra3 (30. Rc1 $17 {was necessary.}) 30... Ng4+ $1 $19 31. Kf3 f5 32. Re2
Rxe2 33. Bxe2 {[#]} Nb2 34. Ra2 Nd3 {...Be8 is the strong threat.} 35. Bxd3
cxd3 36. c4 Be8 37. Nf6 Rxg7 38. Nxe8 Rg6 39. Kf4 $2 (39. Nxd6+ Rxd6 40. Kf4)
39... Nh6 {Weighted Error Value: White=0.36/Black=0.06} (39... Kd7 $142 40.
Kxf5 Ne5 41. Nf6+ {[#]} Rxf6+ $1 {[%mdl 512]} 42. Kxf6 Nxc4) 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.41"]
[White "Jobava, Baadur"]
[Black "Jumabayev, Rinat"]
[Result "1/2-1/2"]
[ECO "B52"]
[WhiteElo "2582"]
[BlackElo "2658"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,109,22,8,31,24,31,0,7,0,6,6,2,0,0,-11,7,6,21,10,22,-10,-7,-4,-11,-7,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-24,30,33,108,102,137,70,80,77,77,61,68,75,
68,68,70,74,77,59,57,41,49,37,50,57,55,31,52,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. O-O Ngf6 6.
Qe2 e6 7. c3 Be7 8. d4 O-O $1 {8...0-0 scores better than 8...cxd4.} 9. Rd1 Rc8
{B52: Sicilian: Moscow Variation with 3...Bd7.} 10. e5 Ne8 11. Bf4 {[#]} Qb6
$146 ({Predecessor:} 11... Qc7 12. exd6 Bxd6 13. Bxd6 Nxd6 14. Na3 Rfd8 15. Nb5
Nxb5 16. Qxb5 a6 17. Qe2 Nf6 18. dxc5 Qxc5 19. Rxd8+ Rxd8 {0-1 (34) Kobalia,M 
(2614)-Grischuk,A (2777) Chess.com INT 2020}) 12. h4 cxd4 13. cxd4 Nc7 14. Nc3
Rfd8 15. Ng5 dxe5 16. dxe5 Nf8 17. Qf3 {[#] Hoping for Be3.} Qc6 18. Nce4 Rxd1+
19. Rxd1 Nd5 20. Be3 {aiming for Nd6.} Bxg5 21. Nxg5 Rc7 22. Bxa7 h6 23. Ne4
Ng6 (23... b6 $5 24. Bb8 $8 Rc8 $11) 24. Bb8 Nxh4 25. Qg4 $36 {[%mdl 2048]
White is pushing.} Rc8 26. Nf6+ Nxf6 27. exf6 {[%csl Gf6][%cal Rg4g7] [#]} Ng6
28. Be5 Kh7 29. Qg3 gxf6 (29... Qa4 $142 30. Re1 gxf6 31. Bxf6 Qxa2) 30. Bxf6
$11 Rg8 (30... Qa4 $14 31. Qd3 Qxa2) 31. Qd3 $16 h5 32. Qd7 (32. a3 $16) 32...
Ne5 $14 {[%csl Gg8][%cal Rc6g2]} 33. Qxc6 Nxc6 $16 {[%mdl 4096] Endgame KRB-KRN
} 34. Rd7 Kg6 35. Bc3 Rb8 36. a4 b5 37. Rc7 $1 {[%cal Rc7c6]} b4 38. Bd2 Rb6
39. Kf1 Ra6 40. Ke2 Nd4+ 41. Kd3 e5 42. Rc4 (42. Be3 $5 {[%cal Re3d4]}) 42...
Rxa4 43. Rxb4 (43. Bc3 $5) 43... Ra1 {The position is equal.} 44. Be3 Rd1+ 45.
Kc3 {[%cal Re3d4]} Nf5 46. Re4 f6 47. b4 Nd6 48. Rh4 f5 49. g3 e4 50. Kc2 Rd3
51. Bc5 Nb5 52. Rh1 Na3+ 53. Kb2 Nc4+ 54. Kc2 Na3+ 55. Kb2 {Weighted Error
Value: White=0.08/Black=0.07} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.42"]
[White "Onyshchuk, Volodymyr"]
[Black "Mamedov, Rauf"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2622"]
[BlackElo "2673"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,79,14,38,36,28,36,15,11,50,11,19,0,0,0,2,7,77,85,79,68,71,63,60,70,
54,21,66,70,69,67,74,48,145,146,129,124,135,106,127,122,126,126,173,175,171,
165,225,217,231,177,307,294,400,412,407,414,426,153,438,439,436,434,450,440,
587,576,699,713]} 1. e4 c5 2. Nf3 g6 3. c3 d5 4. exd5 Qxd5 5. d4 Bg7 6. dxc5
Qxd1+ 7. Kxd1 Nf6 8. Nbd2 $5 {[%mdl 4] Leaves trodden paths. B22: Sicilian: 2
c3.} O-O 9. Bc4 Nc6 10. Ke2 {[#] The position is equal.} Rd8 $146 ({
Predecessor:} 10... Na5 11. Bd3 Nd7 12. Bc2 Rd8 13. Nb3 Nxb3 14. axb3 Nxc5 15.
Be3 b6 16. Rhd1 Ba6+ {1-0 (65) Roberson,P (2429)-Garcia Paolicchi,R (2123)
Escaldes 2019}) 11. Nb3 Bg4 12. Bb5 Ne5 13. Bf4 Nxf3 14. gxf3 Bh5 (14... Be6
$11 {keeps the balance.}) 15. Rhd1 $16 Rdc8 16. Rd3 a6 17. Bc4 e6 18. Rad1 Bf8
({But not} 18... b5 $2 19. cxb6 g5 20. Bg3 $18) 19. Kf1 Ne8 ({Wrong is} 19...
b5 $2 20. cxb6 Rxc4 21. b7 $1 $18) 20. Kg2 Bxc5 ({Don't go for} 20... b5 $2 21.
cxb6 Rxc4 22. b7 $1 $18) 21. Nxc5 Rxc5 {[#]} 22. Rd8 $1 Rcc8 (22... Rxd8 $14
23. Rxd8 Rxc4 24. Rxe8+ Kg7 25. Be5+ Kh6) 23. Rxc8 $1 Rxc8 24. Bb3 Ng7 25. Rd7
b5 26. Ra7 Nf5 27. Rxa6 Nh4+ {[#]} 28. Kh3 $1 {[%cal Rh3h4]} Nxf3 {[#]} 29.
Rxe6 $1 {[%mdl 512]} g5 {[#]} (29... Rd8 $142 30. Rb6 Nd2 31. Rxb5 Nxb3) 30.
Be3 $1 $18 Kg7 31. Re7 Rc6 (31... Rb8 {was called for.} 32. Rc7 h6) 32. Rb7 Bg6
33. Bd5 Rf6 34. Kg3 Ng1 35. Kg2 $2 (35. Rxb5 $18 {has better winning chances.
Hoping for Bc4.} Ne2+ 36. Kg2) 35... Ne2 $2 {This costs Black the game.} (35...
Rd6 $16 {is a better defense.}) 36. Rxb5 {White is clearly winning.} Bd3 37.
Rb7 Rd6 38. c4 Rf6 39. f3 h5 40. Bxg5 {Weighted Error Value: White=0.15/
Black=0.40} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.43"]
[White "Cheparinov, Ivan"]
[Black "Kravtsiv, Martyn"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2659"]
[BlackElo "2625"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,47,6,5,17,12,16,18,29,0,67,60,87,90,76,19,33,30,75,47,78,95,92,63,
107,91,240,239,244,253,475,479,476,466,439,471,456,449,460,440]} 1. d4 Nf6 2.
c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 O-O 6. e4 Re8 {E20: Nimzo-Indian: 4 g3 and 4
f3.} 7. Nge2 d6 8. Ng3 b5 {The position is equal.} 9. Be2 $5 {[%mdl 4] An
interesting side line.} ({Don't play} 9. cxb5 exd5 10. Be2 d4 $15) 9... exd5 {
[#]} (9... bxc4 $11 10. Bxc4 Ba6 11. Bxa6 Nxa6) 10. cxd5 $146 ({Predecessor:} 
10. exd5 bxc4 11. O-O Nbd7 12. Nce4 Nxe4 13. Nxe4 Ne5 14. Qc2 Bf5 15. Bxc4 Nxc4
16. Qxc4 {0-1 (60) Alivodic,D (2120)-Cirovic,M (2226) Pljevlja 2019}) 10... c4
11. O-O Nbd7 12. Kh1 (12. a4 $1 $16) 12... Rb8 13. Be3 a5 14. Qc2 a4 15. b3 $1
a3 16. Bd4 Ba6 17. Rab1 Ne5 {[#] Loses the game.} (17... Bc5 $16 18. Bxc5 Nxc5)
18. bxc4 $1 $18 {[%mdl 64] Discovered Attack, Overworked Piece} bxc4 {[#]} 19.
Qa4 {[%mdl 64] Double Attack} Qa5 {[#]} (19... Bxc3 20. Bxc3 Ra8 21. Qxa3 Bb7)
20. Rxb4 $1 {[%mdl 576] Deflection. White is clearly winning.} Qxb4 21. Qxa6
Ra8 22. Qb5 Reb8 23. Qxb4 Rxb4 24. Nf5 {Weighted Error Value: White=0.09/
Black=0.46} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.44"]
[White "Georgiev, Kiril"]
[Black "Gukesh D"]
[Result "0-1"]
[ECO "E51"]
[WhiteElo "2577"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,72,0,-2,0,-17,15,-7,-12,17,11,-26,-20,-40,-18,-19,-23,-17,-25,-13,
-15,-16,0,-34,-34,-65,-65,-77,-82,-80,-81,-77,-80,-89,-79,-87,-82,-74,-88,-338,
-356,-657,-657,-657,-657,-657,-657,-657,-657,-642,-629,-29971,-3742,-29993,
-796,-972,-970,-972,-811,-1086,-855,-29980,-29981]} 1. d4 Nf6 2. c4 e6 3. Nf3
d5 4. Nc3 Bb4 5. e3 O-O 6. Bd2 b6 7. a3 Bd6 {E51: Nimzo-Indian: Rubinstein: 4..
.0-0 5 Nf3 d5.} 8. Rc1 a6 9. Bd3 Bb7 {[#] The position is equal.} 10. cxd5 $146
({Predecessor:} 10. O-O Nbd7 11. b4 dxc4 12. Bxc4 e5 13. dxe5 Nxe5 14. Nxe5
Bxe5 15. Qe2 {1/2-1/2 (15) Piesik,P (2407)-Pacher,M (2437) Slovakia 2019})
10... exd5 11. O-O Nbd7 12. Ne2 Qe7 13. Ng3 g6 14. Bb4 {Threatening Rxc7!} c5
15. dxc5 bxc5 16. Bc3 Rfd8 17. Re1 a5 18. Qa4 c4 {Strongly threatening ...Nc5.}
19. Bb1 Nc5 20. Qd1 Nb3 21. Rc2 Ne4 22. Nxe4 dxe4 23. Nd4 Nc5 $36 {[%cal Bb3c5,
Bc5d3,Bd3e5,Be5f3][%mdl 2080] Black has strong initiative.} 24. Qg4 Nd3 25. Rf1
$2 {Loses the game.} (25. Rd1 $17 {keeps fighting.}) 25... Ne5 $1 $19 {[%cal
Re5g4]} 26. Qe2 {[#]} (26. Qh3 Bc8 27. g4) 26... Nf3+ $1 {[%mdl 512]} 27. Nxf3
exf3 28. Qxc4 fxg2 {...Rac8 is the strong threat.} 29. Re1 Bf3 30. Ba2 {
If only White now had time for Rd2....} Rac8 {[%cal Ba8c8,Bc8c5,Bc5h5,Bh5g5]
[%mdl 32]} 31. Qa4 Rc5 32. Rd2 {[#]} Bc6 ({Not} 32... Rh5 33. Rxd6 Qxd6 34. Qf4
$17) (32... Bxh2+ $142 $1 {[%mdl 512]} 33. Kxh2 Rh5+ 34. Kg3 Qg5+ 35. Kxf3 Rh3+
36. Ke2 Qh5+ 37. Qg4 Qxg4+ 38. f3 Qxf3#) 33. Qg4 {[#]} Bxh2+ $1 {[%mdl 512]}
34. Kxh2 Rxd2 35. Bxd2 Rh5+ 36. Kg3 Rg5 {Weighted Error Value: White=1.07/
Black=0.22} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.45"]
[White "Abasov, Nijat"]
[Black "Adly, Ahmed"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2638"]
[BlackElo "2602"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,84,8,0,16,0,2,2,-10,-22,-12,-12,-14,-5,-11,0,0,-22,-16,-21,-21,-20,
-21,-56,-48,-42,-59,-50,-35,-35,-19,-33,-31,-60,-43,-85,-94,-81,-89,-81,-85,
-142,-143,-138,-144,-138,-140,-145,-112,-148,-148,-238,-237,-342,-342,-342,
-327,-421,-421,-421,-421,-539,-68,-523,-523,-534,-523,-559,-559,-567,-421,-571,
-560,-562,-545]} 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 d5 5. e3 O-O 6. a3 Be7
7. Qc2 b6 {E11: Bogo-Indian.} 8. b4 c5 {[#]} 9. bxc5 $146 ({Predecessor:} 9.
cxd5 exd5 10. bxc5 bxc5 11. dxc5 Qa5 12. Bb2 Ne4 13. Bd3 Ba6 14. O-O Nxc5 15.
Bxh7+ {1-0 (23) Vorobiov,E (2580)-De Verdier,M (2366) Cappelle la Grande 2012})
9... bxc5 {The position is equal.} 10. dxc5 Ba6 11. Bb2 Qa5 12. Be2 Rc8 13. O-O
Nbd7 14. Bc3 Qd8 15. c6 Rxc6 {[%cal Rd5c4]} 16. Qa4 Qc8 17. Nd4 Rc7 {[%cal
Ra6c4]} 18. Nb5 Bxb5 19. Qxb5 Rb8 20. Qa4 Nb6 21. Qc2 Nfd7 {[%cal Rd5c4]} 22.
Rfc1 dxc4 23. e4 Bf6 $36 {[%mdl 2048] Keeping White busy.} 24. a4 Bxc3 25. Qxc3
Nc5 26. a5 ({Better is} 26. Qa3) 26... Nba4 $17 27. Qxc4 {[#]} Na6 $1 {[%mdl
576] Pin} 28. Rxa4 {Strongly threatening Qxc7.} Rxc4 29. Raxc4 Qd8 30. Nf3 g6
31. Ne5 {[#]} (31. Nd4 $17 {was called for.} Nb4 32. Bf1) 31... Qg5 $1 $19 {
[%cal Rg5e5]} ({Weaker is} 31... Qxa5 32. Nc6 $11) 32. Rc8+ (32. Nc6 {keeps
fighting.} Rb2 33. Bf1) 32... Rxc8 33. Rxc8+ Kg7 34. Nxf7 Kxf7 35. Bxa6 Qxa5 {
[%mdl 4096] Endgame KQ-KRB} 36. Rc6 {and the idea Bf1 leaves White hopeful.}
Qe1+ 37. Bf1 {Loses the game.} a5 {[%cal Ba7a5,Ba5a4,Ba4a3][%mdl 32] Black is
clearly winning.} 38. Rc7+ Kf8 39. Rxh7 a4 40. Ra7 Qb4 41. g3 a3 42. h4 Qb3 {
Weighted Error Value: White=0.29/Black=0.17} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.46"]
[White "Dreev, Aleksey"]
[Black "Ganguly, Surya Shekhar"]
[Result "0-1"]
[ECO "E14"]
[WhiteElo "2635"]
[BlackElo "2617"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,118,0,0,-10,-3,-8,0,-6,-9,-14,-10,0,14,14,14,14,14,14,14,7,15,15,15,
15,23,18,17,-4,-5,-11,-11,-11,-11,-11,-11,-12,-12,-12,-12,-15,-14,-58,-59,-64,
0,0,0,-12,0,-42,-32,-32,-31,-98,-99,-103,-98,-102,0,-107,-109,-170,-165,-153,
-141,-1002,-1007,-1008,-977,-972,-950,-987,-985,-911,-907,-889,-852,-818,-814,
-1012,-997,-1285,-922,-1220,-242,-1028,-479,-419,0,-1237,-1229,-892,-802,-1901,
-1904,-1965,-1772,-1689,-1046,-992,-910]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. e3 b6
5. Nc3 Bd6 6. b3 Bb7 7. Bb2 Nbd7 8. Bd3 O-O 9. O-O a6 10. Rc1 Qe7 11. cxd5 {
E14: Queen's Indian: Classical Variation (4 e3).} exd5 12. Nh4 g6 $1 13. Nf3 {
The position is equal.} Ne4 {[#]} 14. Ne2 $146 ({Predecessor:} 14. h3 f5 15. a4
Rae8 16. Qe2 g5 17. g3 Qe6 18. Kg2 Re7 19. Nd2 Nxc3 20. Bxc3 {0-1 (40) Schwarz,
J (2306)-Nyvlt,Z (2420) ICCF email 2014}) 14... f5 15. Bb1 g5 16. Ne5 Nxe5 17.
dxe5 Bxe5 18. Bxe5 Qxe5 19. f3 Nc5 20. Qd4 Rae8 21. b4 Qxe3+ 22. Qxe3 Rxe3 23.
Nd4 Ne6 24. Kf2 f4 25. Nxe6 Rxe6 26. Rxc7 Rf7 27. Rxf7 Kxf7 28. Bxh7 $11 {
[%mdl 4096] Endgame KRB-KRB} Rc6 29. Rb1 Rc7 30. Bd3 Kf6 31. Ke2 Ke5 (31... Rc3
$1 $15) 32. Kd2 Kd4 33. Rb3 Rc8 34. Ra3 Rh8 35. h3 Ra8 36. Ra4 {[#]} (36. Rc3
$15) 36... Ke5 $1 $17 37. Kc3 Bc8 38. Kd2 Bb7 39. Kc3 $1 d4+ {Black continues
to play with concentration.} 40. Kd2 {[#]} (40. Kb2 $17 {was worth a try.})
40... a5 $1 $19 41. bxa5 Rxa5 42. Rxa5+ {[%mdl 8192]} (42. Rb4 $17) 42... bxa5
{KB-KB} 43. Ke2 Bd5 44. a3 Kd6 45. Kf2 Kc5 46. Ke1 Bc4 47. Bg6 Ba6 48. Bf7 Bd3
49. Be6 Kb5 50. Bb3 Bc4 51. Bd1 Kb6 $2 (51... Bf7 52. Kd2 Bd5) 52. Ba4 $2 (52.
Bc2) 52... Kc5 (52... Bf7 $142 53. Kd2 Kc5) 53. Bc2 Kb5 (53... Ba6 $142 54. Bb3
Bc4) 54. Bd1 $1 Be6 {Black is clearly winning.} 55. Kd2 Kc4 56. Bc2 Bd7 57. Bg6
Kb3 58. Kd3 Kxa3 59. Kxd4 Kb2 {Weighted Error Value: White=0.49/Black=0.40} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.47"]
[White "Gretarsson, Hjorvar Steinn"]
[Black "Kovalev, Vladislav"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2577"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "155"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,155,42,38,12,18,14,0,5,15,19,28,0,0,15,37,28,35,24,27,20,34,9,61,62,
72,67,64,80,70,28,86,25,28,35,36,9,59,48,61,30,27,6,61,43,42,43,56,35,49,32,37,
22,15,4,40,40,42,14,42,42,59,59,69,58,67,36,58,58,58,0,30,0,60,58,60,58,68,57,
57,57,60,51,66,66,68,38,38,38,41,41,39,18,18,18,18,41,33,35,75,70,78,0,8,0,70,
70,70,41,18,14,14,9,12,0,8,0,8,8,16,0,0,0,0,0,2,3,8,8,8,8,8,8,8,8,8,8,8,6,7,7,
8,8,8,8,8,8,8,8]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 b6 5. e4 c5 6. d5 {
E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} Qe7 7. Nge2 exd5 8. exd5 O-O 9.
Bd2 d6 10. O-O-O Ng4 11. Be1 Qg5+ 12. Qd2 Qxd2+ 13. Kxd2 {[#]} a6 $146 ({
Predecessor:} 13... Re8 14. a3 Ba5 15. Ng3 Ba6 16. Nf5 Rd8 17. Kc2 g6 18. h3
Nf6 19. Ne3 Nbd7 {1-0 (39) Navara,D (2697)-Safarli,E (2598) Tornelo INT 2020})
14. a3 Ba5 15. Nc1 Nf6 (15... Bf5 $11) 16. f3 $14 Nbd7 17. Nb3 Bxc3+ 18. Kxc3
Re8 19. Bh4 (19. Bg3 {is more complex.} Ne5 20. Re1 Bf5 21. Bxe5 dxe5 22. g4)
19... Nh5 (19... Ne5 $11 {remains equal.}) 20. Re1 ({White should try} 20. g4
$16 Nhf6 21. Nd2) 20... Rxe1 $11 21. Bxe1 Ne5 22. Bh4 {Be7 is the strong
threat.} f6 23. Nd2 g5 24. Bf2 f5 $1 25. g3 a5 (25... Bd7 $11) 26. Be2 Nf6 27.
Be3 Nf7 28. h4 h6 29. hxg5 hxg5 30. Kc2 Bd7 31. Nb1 Kg7 32. Nc3 Kg6 33. Kd2 Ra7
34. f4 g4 35. Bd3 Ra8 36. Bf2 Re8 37. Kc2 Nh6 38. Re1 Rh8 39. Rh1 Re8 $1 40.
Re1 Rh8 $1 41. Kd2 Rb8 42. Rb1 Ra8 43. b4 axb4 44. axb4 Kf7 45. Bc2 Ne4+ 46.
Bxe4 fxe4 47. bxc5 bxc5 48. Rb7 Ke7 49. Nxe4 Nf5 50. Bxc5 dxc5 51. Nxc5 Rd8 52.
Ne4 ({Much weaker is} 52. Rxd7+ Rxd7 53. Nxd7 Kxd7 $15) 52... Kf8 53. Kc3 {
[%mdl 1024] White has compensation.} Be8 {[#]} 54. Rb6 $1 {[%cal Rb6f6] And
now Rf6+ would win.} Kg7 {[#]} 55. Rb7+ (55. Re6 $1 $16) 55... Kg6 56. Rb6+ (
56. Kb4 $11) 56... Kg7 $14 57. Re6 $1 Bf7 58. Re5 Kg6 59. Nf2 {The position is
equal.} Nxg3 60. Nxg4 {Hoping for Rg5+.} Nf5 61. Nf2 Rc8 62. Ng4 Rc7 (62... Rd8
{keeps more tension.}) 63. Kd3 Ra7 64. c5 Ra3+ 65. Kd2 Ra2+ 66. Kc3 {White
wants to play d6.} Ra3+ ({Of course not} 66... Rg2 67. d6 $14) 67. Kb2 Rd3 68.
d6 Nxd6 69. Kc2 (69. cxd6 {looks sharper.} Rxd6 70. Rg5+ Kh7 71. f5 Rd8 72. Ne5
) 69... Rd4 $1 70. cxd6 Rxd6 $11 {[%mdl 4096] Endgame KRB-KRN} 71. Rg5+ Kh7 72.
Kc3 Rg6 73. Rh5+ Kg7 {aiming for ...Rc6+.} 74. Rh4 Be6 75. Ne3 Rh6 76. Rxh6
Kxh6 77. f5 Bxf5 78. Nxf5+ {Weighted Error Value: White=0.12/Black=0.10}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.48"]
[White "Vokhidov, Shamsiddin"]
[Black "Durarbayli, Vasif"]
[Result "1/2-1/2"]
[ECO "B81"]
[WhiteElo "2521"]
[BlackElo "2629"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,70,25,18,29,10,16,13,12,5,8,7,10,5,12,13,11,16,26,31,119,76,77,57,86,
88,86,87,94,65,93,97,108,83,87,90,79,80,75,48,47,48,48,49,47,41,46,10,31,8,8,0,
0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3
e6 7. g4 d5 {7...Be7 is the modern continuation. B81: Sicilian Scheveningen:
Keres Attack.} 8. Nde2 Bc5 9. exd5 Qb6 10. Be3 Bxe3 11. fxe3 Qxb2 12. dxe6 Bxe6
13. Qb1 Qxb1+ 14. Rxb1 {[#]} Nc6 $146 ({Predecessor:} 14... Nbd7 15. Rxb7 Nd5
16. Ne4 Nxe3 17. Nf4 Nxc2+ 18. Kd2 Nd4 19. Ke3 Nc2+ 20. Kd2 Nd4 {0-1 (60)
Alsina Leal,D (2483)-Andersen,M (2597) Porto Carras 2018}) 15. Rxb7 O-O-O (
15... O-O $14) 16. Rb1 (16. Rb6 {seems wilder.} Kc7 17. Rxa6 Nb4 18. Ra7+ Kb6
19. Ra4) 16... Nd5 17. Bg2 Kc7 18. Bxd5 Bxd5 19. Nxd5+ Rxd5 20. Rf1 f6 21. Nf4
Re5 22. Kf2 Rd8 23. Rfd1 g5 24. Rxd8 Nxd8 $16 {[%mdl 4096] Endgame KRN-KRN} 25.
Nh5 (25. Nd3 {keeps more tension.} Ra5 26. Ke2 f5 27. gxf5 Rxf5 28. Rb4) 25...
f5 26. Nf6 fxg4 27. hxg4 Rc5 28. c3 Nf7 29. e4 Ne5 30. Ke2 Ra5 {The position
is equal.} 31. Rh1 Rxa2+ 32. Ke3 Kd6 33. Rxh7 Ra4 34. Ne8+ Ke6 35. Nc7+ Kd6 {
Weighted Error Value: White=0.09/Black=0.10} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.49"]
[White "Goryachkina, Aleksandra"]
[Black "Neiksans, Arturs"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2602"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,75,30,25,18,12,-30,-35,-30,-11,6,32,-3,37,42,53,0,54,52,34,44,44,29,
19,27,33,7,12,14,151,142,204,206,208,206,464,309,279,295,294,287,265,189,656,
651,752,742,705,682,29990,29991,29991,29991,29991,29988,29988,29989,29989,
29990]} 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 c5 6. d5 exd5 7. cxd5 Bb7
8. e4 Qe7 9. Bd3 Nxd5 10. O-O Nc7 $1 11. b4 $5 {[%mdl 4] Exploring less
charted territory. E12: Queen's Indian: Unusual White 4th moves, 4 a3, 4 Nc3
Bb7 5 a3 and 4 Nc3 Bb7 .} Nc6 12. bxc5 Qxc5 13. Nc3 {Black is slightly better.}
Ne6 14. Be3 {[#]} Qd6 $146 ({Predecessor:} 14... Qh5 15. Rfd1 Bc5 16. Bc4 Bxe3
17. fxe3 Qc5 18. Nb5 O-O 19. Rxd7 Na5 20. Bd3 Bc6 21. Rxa7 Qxc2 {0-1 (21)
Mazet,J (2167)-Sanchez Sebastian,F (2405) Barcelona 2019}) 15. Rfd1 {[%mdl
1024] White has compensation.} (15. Nb5 $5 {[%cal Rb5d6]} Qb8 16. Rfd1 $11)
15... Qb8 16. Bc4 Be7 17. Nd5 ({Better is} 17. Nb5 $14) 17... Bd8 (17... Bd6
$11) 18. Rac1 $14 O-O 19. a4 $36 {[%mdl 2048] White has the initiative.} Bc7
20. h3 Bd6 21. Nh4 Bc5 22. Bxc5 bxc5 23. Rb1 {White wants to play Ne7+!} Ned4 {
White leaves nothing to chance now.} (23... Qd8 $11 24. Rxb7 Qxh4) 24. Qc3 $1
$16 Qd8 {[#]} (24... a5 $16 {was called for.}) 25. Qg3 $1 $18 ({But not} 25.
Rxb7 Qxh4 26. Rxd7 Rad8 $14) 25... Rb8 {[#]} 26. Nf5 $1 {[%csl Gf5][%cal Rg3g7]
} g6 (26... Nxf5 {was worth a try.} 27. exf5 Kh8) 27. Nd6 Ba8 28. e5 Rxb1 29.
Rxb1 Kg7 {Threatening ...Na5.} 30. Rd1 Na5 $2 {[#]} (30... Rg8) 31. Rxd4 $1 {
[%mdl 512]} cxd4 (31... Bxd5 32. Rxd5) 32. Nf5+ Kh8 {[#]} 33. Nf6 $1 {White
wants to mate with Qh4!} Rg8 {[#]} (33... gxf5 34. Qh4) 34. Qh4 $1 {[%csl Gf6]
[%cal Rh4h7] White mates.} h5 {[#]} 35. Qg5 $1 {[%cal Rg5h6]} Qf8 {[#]} 36.
Bxf7 $1 {[%mdl 512]} Be4 37. Bxg6 Rxg6 38. Qxh5+ {Weighted Error Value:
White=0.12/Black=0.87} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.50"]
[White "Meshkovs, Nikita"]
[Black "Adhiban, B.."]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "2550"]
[BlackElo "2672"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,98,49,25,49,36,33,33,33,29,81,27,51,0,11,8,9,9,26,19,54,59,51,51,55,
45,53,6,6,6,6,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-25,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 c5 4. d4
cxd4 5. Nxd4 Nc6 6. e4 Nxd4 7. Qxd4 d6 8. Be3 Bg7 9. Be2 O-O 10. Qd2 a5 {
B36: Sicilian: Maroczy Bind: Gurgenidze System.} 11. O-O a4 12. Rad1 Qa5 {
White is slightly better.} 13. Bd4 Be6 {[#]} (13... Bd7 $11) 14. Qe3 ({White
should try} 14. f4 $1 $16) 14... Rfe8 {[#]} 15. Nd5 $146 (15. f4 $14) ({
Predecessor:} 15. f4 Rac8 16. b3 axb3 17. axb3 Ng4 18. Qd3 Bxd4+ 19. Qxd4 f5
20. Bxg4 fxg4 21. f5 {1-0 (29) Cuhendi,S (2364)-Hujbert,F (2444) Budapest 2014}
) 15... Bxd5 16. cxd5 Rec8 17. a3 {Threatens to win with Bb6.} Nd7 18. Bg4 Qb5
19. Bxg7 Kxg7 20. Rd4 $1 {[%cal Rd4b4] [#] aiming for Rb4.} Rc7 21. Rb4 $1 {
[%cal Rb4b5]} Qc5 22. Bxd7 (22. Qd2 {keeps more tension.} Ne5 23. Be2 Ra5 24.
Rd1 Qc2 25. Qxc2 Rxc2 26. Bf1) 22... Qxe3 23. fxe3 Rxd7 $14 {[%mdl 4096]
Endgame KRR-KRR} 24. Rc1 Ra5 25. Rcc4 b5 26. Rc8 Rb7 27. Kf2 Raa7 28. Kf3 Kf6
29. h4 h5 30. Kf4 Rb6 31. g3 Rab7 32. Rc2 e6 33. Rc8 Ra7 34. Re8 Rc7 35. dxe6
fxe6 36. Ra8 Rc2 {[%cal Rc2f2]} 37. e5+ {The position is equal.} dxe5+ 38. Ke4
Rbc6 39. Rf8+ Ke7 40. Rb8 R2c4+ 41. Rxc4 bxc4 $11 {KR-KR} 42. Rb7+ Kf6 {
With the idea ...c3.} 43. Rb4 c3 44. bxc3 Rxc3 45. Rxa4 Rc1 46. Kf3 Rf1+ 47.
Kg2 Ra1 48. Kf3 Rf1+ 49. Kg2 Ra1 {Weighted Error Value: White=0.06/Black=0.05}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.51"]
[White "Movsesian, Sergei"]
[Black "Paravyan, David"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2627"]
[BlackElo "2642"]
[Annotator "TA"]
[PlyCount "66"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,66,5,17,11,12,14,9,9,8,13,14,17,9,20,22,17,17,17,16,16,16,18,23,0,0,0,
0,0,0,-7,0,0,18,7,7,6,18,4,11,2,10,0,15,0,0,0,0,0,0,0,0,-10,0,0,0,0,0,-6,-6]} 
1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. Bb5 Nd4 5. Bd3 a6 6. Nxd4 {B30: Sicilian: 2...
Nc6 3 Bb5, lines without ...g6.} cxd4 7. Ne2 d5 8. exd5 Qxd5 9. O-O Nf6 10. c3
dxc3 11. dxc3 Bc5 12. Nf4 {[#]} Qd8 $146 ({Predecessor:} 12... Qc6 13. Nh5 Nxh5
14. Qxh5 g6 15. Qe5 O-O 16. Qf6 Re8 17. Bh6 Bf8 18. Bxf8 Rxf8 {1-0 (83) Jones,
G (2670)-Willow,J (2386) Chess.com INT 2020}) 13. Nh5 Nxh5 14. Qxh5 {[%mdl 64]
[#] Double Attack} Qxd3 15. Qxc5 Qd5 16. Qa3 Bd7 {The position is equal.} 17.
Be3 Bc6 {[%csl Gc6][%cal Rd5g2] [#]} 18. f3 Rd8 19. Rf2 (19. b3 {seems wilder.}
f6 20. c4 Qf5 21. Qc5 Qxc5 22. Bxc5 Kf7 23. Bb6) 19... Qc4 20. Re1 (20. Bd4 {
feels hotter.} f6 21. Rd1 Qa4 22. Qxa4 Bxa4 23. Rdd2) 20... Qa4 21. Qxa4 Bxa4
22. b3 Bc6 23. Bb6 Rd7 24. h4 h6 25. Ree2 g5 26. Rd2 (26. h5 {keeps more
tension.} Rg8 27. g4 Ke7 28. Kg2 Rd3 29. Bc5+) 26... f6 27. Rxd7 Kxd7 $11 {
[%mdl 4096] Endgame KRB-KRB} 28. Rd2+ Ke7 29. Bc5+ Kf7 30. Bb6 g4 31. Kf2 gxf3
32. gxf3 Kg6 33. Rd8 Rxd8 {An uneventful encounter.  Weighted Error Value:
White=0.04/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.52"]
[White "Bjerre, Jonas Buhl"]
[Black "Morovic Fernandez, Ivan"]
[Result "0-1"]
[ECO "C92"]
[WhiteElo "2569"]
[BlackElo "2510"]
[Annotator "TA"]
[PlyCount "149"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,149,46,50,39,33,37,23,18,20,24,19,30,32,32,27,28,28,28,0,0,0,11,0,0,
0,0,0,0,0,2,2,2,8,63,68,54,39,39,0,0,0,0,0,0,0,0,0,0,0,0,-117,-118,-136,-111,
-83,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,43,43,43,43,42,43,41,0,20,12,172,0,0,0,45,
8,8,8,8,8,8,8,73,30,30,69,52,0,134,134,127,124,120,112,1022,992,1089,1087,972,
884,858,217,29971,29972,29954,830,426,377,629,554,29978,29979,29979,29980,
29980,29981,29981,29982,29988,29989]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6
5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Be6 10. d4 Bxb3 11. axb3 Qc8 {
C92: Closed Ruy Lopez: 9...Be6, Karpov and Flohr-Zaitsev Variations.} 12. d5
Nb8 13. c4 Nbd7 {White has an edge.} 14. Nc3 {[#]} Qb7 $146 ({Predecessor:} 
14... Nc5 15. b4 Ncd7 16. cxb5 axb5 17. Bd2 c5 18. dxc6 Rxa1 19. Qxa1 Qxc6 20.
Qd1 Rc8 {1-0 (46) Videnova,I (2301)-Bezgodova,M (2200) Gaziantep 2012}) 15. Qe2
{[%cal Rc4b5]} b4 16. Na4 a5 17. Bg5 Rfc8 18. Rac1 c5 19. dxc6 Rxc6 20. Rcd1
Qc7 21. Nh2 Nf8 {[%cal Bd7f8,Bf8e6,Be6d4][%mdl 32]} 22. Bxf6 Bxf6 23. Rd5 Ne6
24. g3 Nd4 {[%mdl 64] Double Attack} 25. Qd3 h5 26. Nf3 {[%cal Rf3d4]} g6 (
26... Ne6 $1 $11) 27. Nxd4 $14 exd4 28. Rc1 Re8 29. c5 (29. Rf1 {is
interesting.} Bg7 30. Kg2 Re6 31. Rb5 Qd8 32. h4) 29... dxc5 30. Rcxc5 Rxc5 31.
Nxc5 Rd8 32. Rxd8+ Qxd8 33. Qc4 Qc8 34. Kg2 d3 35. Qd5 (35. Nxd3 $11 Qxc4 36.
bxc4) 35... d2 $1 $17 {[%cal Rd2d1]} 36. Nd7 Bxb2 37. Qxd2 {[#]} Bg7 ({Black
should play} 37... a4 $1 $17 {[%cal Ra4a3] Threatens to win with ...a3.} 38.
bxa4 (38. Qxb2 Qxd7 39. bxa4 Qxa4 $17) 38... Bg7) 38. Qd5 $11 Qd8 {next ...a4!
is good for Black.} 39. Qc6 Qe7 40. Kf3 Kh7 41. h4 Bc3 42. Ke3 Kg7 {With the
idea ...g5.} 43. Qd5 Bb2 44. Kd3 Bc3 45. Kc4 Be1 46. Qd4+ f6 47. Nc5 Qe8 48.
Qe3 Bc3 49. f4 Kf7 50. Qd3 Qc6 $2 {[#]} (50... Kg7 $11) 51. Qd1 $2 (51. Qd8 $1
$18) 51... Ke7 52. f5 ({Much weaker is} 52. Qd5 Qxd5+ 53. exd5 f5 $19) 52...
Kf7 53. fxg6+ Kxg6 54. g4 hxg4 55. Qxg4+ Kh6 56. Qg8 Be5 (56... Qc7 $11) 57.
Qh8+ $16 Kg6 58. h5+ Kg5 59. Qh7 (59. h6 $14 Bd6 60. Qg7+ Kh5 61. Qf7+ Kxh6 62.
Qxf6+ Kh5 63. Qf5+ Kh6 64. Qd5) 59... Bd6 (59... Qe8 $1 $11 {keeps the balance.
}) 60. Qf5+ {White stays focused until the end.} Kh4 61. h6 {Hoping for h7.}
Bxc5 62. Qxc5 {[%mdl 4096] Endgame KQ-KQ} Qb7 $2 {[%mdl 8192]} (62... Qa6+ $16
63. Kd4 Qe2) 63. Qd6 $18 Qc8+ 64. Kb5 Kg5 65. h7 {White wants to mate with
Qg3+.} Kg6 66. Qh2 Qb7+ $2 (66... Qe8+ $18 67. Kxa5 Qd8+ 68. Kxb4 Qd4+ 69. Kb5
Qd3+ 70. Ka4 Qd4+ 71. b4 Qd1+ 72. Ka5 Qd8+ 73. Ka6 Qa8+ 74. Kb5 Qb7+ 75. Kc5
Qe7+ 76. Qd6 Qa7+ 77. Kc6 Qa8+ 78. Kd7 Kxh7 79. Qe7+ Kh6 80. Qxf6+ Kh5) 67.
Kxa5 Qa7+ 68. Kxb4 (68. Kb5 $142 Qb7+ 69. Kc5 Qe7+ 70. Kd4 Qd7+ 71. Kc4 Qc8+
72. Kxb4 Qf8+ 73. Kc3 Qc5+ 74. Kb2 Qd4+ 75. Kb1) 68... Qd4+ 69. Kb5 Qd3+ $2 (
69... Qxe4 70. h8=Q Qd5+ 71. Ka4 Qd4+ 72. b4 Qd7+ 73. Ka5 Qa7+ 74. Kb5 Qb7+ 75.
Kc5 Qa7+ 76. Kc4 Qa6+ 77. b5 Qe6+ 78. Kc5 Qe3+ 79. Kc6 Qf3+ 80. Kc7 Qc3+ 81.
Kb8 Qe5+ 82. Qxe5 fxe5 83. Qxe5 Kh6) 70. Ka4 Qa6+ 71. Kb4 {White mates.} Qb6+
72. Ka3 Qa7+ 73. Kb2 Qd4+ 74. Kb1 Qd3+ 75. Ka2 {[%mdl 32768] Weighted Error
Value: White=0.13/Black=0.19. Sensor Board Error (Ke4/e5)?} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.53"]
[White "Miezis, Normunds"]
[Black "Budisavljevic, Luka"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "2467"]
[BlackElo "2508"]
[Annotator "ChessBase"]
[PlyCount "107"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. c4 {[%emt 0:00:06]} Nf6 {[%emt 0:00:21]} 2. Nc3 {[%emt 0:00:22]} c5 {
[%emt 0:00:23]} 3. g3 {[%emt 0:01:02]} e6 {[%emt 0:00:43]} 4. Bg2 {[%emt 0:01:
27]} d5 {[%emt 0:00:59]} 5. cxd5 {[%emt 0:03:32]} exd5 {[%emt 0:00:06]} 6. d3 {
[%emt 0:01:07]} d4 {[%emt 0:00:25]} 7. Ne4 {[%emt 0:00:15]} Nxe4 {[%emt 0:00:
09]} 8. Bxe4 {[%emt 0:00:07]} Be7 {[%emt 0:01:47]} 9. h4 {[%emt 0:00:12]} Nc6 {
[%emt 0:06:31]} 10. Nh3 {[%emt 0:03:47]} Bxh3 {[%emt 0:19:20]} 11. Rxh3 {
[%emt 0:01:13]} Qd7 {[%emt 0:00:16]} 12. Rh1 {[%emt 0:02:53]} O-O {[%emt 0:01:
33]} 13. Kf1 {[%emt 0:01:20]} f5 {[%emt 0:07:32]} 14. Bf3 {[%emt 0:00:41]} Bd6
{[%emt 0:03:06]} 15. Bf4 {[%emt 0:04:35]} Bxf4 {[%emt 0:02:27]} 16. gxf4 {
[%emt 0:00:16]} Rac8 {[%emt 0:03:13]} 17. h5 {[%emt 0:02:48]} Kh8 {[%emt 0:00:
42]} 18. h6 {[%emt 0:07:20]} g6 {[%emt 0:07:49]} 19. Rc1 {[%emt 0:03:00]} Ne7 {
[%emt 0:07:09]} 20. Qb3 {[%emt 0:05:39]} b6 {[%emt 0:00:18]} 21. a4 {[%emt 0:
03:37]} Qd6 {[%emt 0:02:39]} 22. e3 {[%emt 0:00:19]} Rcd8 {[%emt 0:05:45]} 23.
Ke2 {[%emt 0:13:20]} Ng8 {[%emt 0:02:17]} 24. Kd2 {[%emt 0:03:14]} Rfe8 {
[%emt 0:06:34]} 25. Rce1 {[%emt 0:00:24]} Re7 {[%emt 0:03:04]} 26. Re2 {
[%emt 0:10:08]} Red7 {[%emt 0:04:17]} 27. Kc2 {[%emt 0:06:34]} c4 {[%emt 0:02:
08]} 28. Qb5 {[%emt 0:00:54]} a6 {[%emt 0:05:55]} 29. Qxa6 {[%emt 0:06:45]}
dxe3 {[%emt 0:00:28]} 30. Rxe3 {[%emt 0:00:36]} cxd3+ {[%emt 0:00:58]} 31. Kb1
{[%emt 0:01:51]} Qxf4 {[%emt 0:02:31]} 32. Qb5 {[%emt 0:07:04]} d2 {[%emt 0:03:
36]} 33. Bd1 {[%emt 0:01:31]} Rc7 {[%emt 0:05:18]} 34. Bb3 {[%emt 0:04:04]} Qd4
{[%emt 0:03:13]} 35. Ka2 {[%emt 0:03:13]} Nf6 {[%emt 0:00:58]} 36. Re6 {
[%emt 0:01:29]} Rcd7 {[%emt 0:02:01]} 37. Rd1 {[%emt 0:06:59]} Ne4 {[%emt 0:00:
15]} 38. f3 {[%emt 0:00:32]} Nc5 {[%emt 0:00:44]} 39. Rxb6 {[%emt 0:01:03]} Qe3
{[%emt 0:01:42]} 40. Rb8 {[%emt 0:02:16]} Qxb3+ {[%emt 0:00:46]} 41. Qxb3 {
[%emt 0:50:17]} Nxb3 {[%emt 0:50:03]} 42. Rxd8+ {[%emt 0:00:28]} Rxd8 {[%emt 0:
00:01]} 43. Kxb3 {[%emt 0:00:12]} g5 {[%emt 0:00:00]} 44. Kc3 {[%emt 0:00:00]}
Rd6 {[%emt 0:00:00]} 45. Rxd2 {[%emt 0:00:00]} Rxh6 {[%emt 0:00:00]} 46. b4 {
[%emt 0:00:00]} g4 {[%emt 0:00:00]} 47. b5 {[%emt 0:00:00]} g3 {[%emt 0:00:00]}
48. Rg2 {[%emt 0:00:00]} f4 {[%emt 0:00:00]} 49. a5 {[%emt 0:00:00]} Rh5 {
[%emt 0:00:00]} 50. b6 {[%emt 0:00:00]} Rxa5 {[%emt 0:00:00]} 51. b7 {[%emt 0:
00:00]} Rb5 {[%emt 0:00:00]} 52. Rb2 {[%emt 0:00:00]} Rxb7 {[%emt 0:00:00]} 53.
Rxb7 {[%emt 0:00:00]} h5 {[%emt 0:00:00]} 54. Rb5 {[%emt 0:00:00]} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.06"]
[Round "10.54"]
[White "Van Foreest, Lucas"]
[Black "Rakotomaharo, Fy Antenaina"]
[Result "1/2-1/2"]
[ECO "E38"]
[WhiteElo "2543"]
[BlackElo "2484"]
[Annotator "ChessBase"]
[PlyCount "151"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:13]} Nf6 {[%emt 0:00:23]} 2. c4 {[%emt 0:00:06]} e6 {[%emt 0:
00:06]} 3. Nc3 {[%emt 0:00:04]} Bb4 {[%emt 0:00:04]} 4. Qc2 {[%emt 0:00:05]} c5
{[%emt 0:00:19]} 5. dxc5 {[%emt 0:00:06]} Qc7 {[%emt 0:00:15]} 6. Nf3 {[%emt 0:
03:27]} Bxc5 {[%emt 0:00:16]} 7. e3 {[%emt 0:00:41]} a6 {[%emt 0:00:24]} 8. a3
{[%emt 0:06:31]} b6 {[%emt 0:00:15]} 9. b4 {[%emt 0:03:09]} Be7 {[%emt 0:00:07]
} 10. Bb2 {[%emt 0:00:16]} Bb7 {[%emt 0:00:07]} 11. Bd3 {[%emt 0:08:29]} d6 {
[%emt 0:02:58]} 12. O-O {[%emt 0:03:51]} Nbd7 {[%emt 0:01:06]} 13. Ne4 {
[%emt 0:05:33]} Rc8 {[%emt 0:08:00]} 14. Rac1 {[%emt 0:01:28]} h6 {[%emt 0:00:
54]} 15. h3 {[%emt 0:20:39]} O-O {[%emt 0:03:17]} 16. Ned2 {[%emt 0:01:44]} Qb8
{[%emt 0:15:35]} 17. Qb1 {[%emt 0:00:22]} Bd8 {[%emt 0:05:40]} 18. Rfd1 {
[%emt 0:03:30]} Re8 {[%emt 0:04:00]} 19. Ne4 {[%emt 0:09:55]} Be7 {[%emt 0:07:
58]} 20. Ned2 {[%emt 0:05:42]} Qa8 {[%emt 0:04:15]} 21. Re1 {[%emt 0:04:50]}
Bd8 {[%emt 0:05:22]} 22. e4 {[%emt 0:01:34]} Bc7 {[%emt 0:04:29]} 23. Bf1 {
[%emt 0:00:02]} Red8 {[%emt 0:04:52]} 24. Rcd1 {[%emt 0:00:41]} Ne5 {[%emt 0:
02:53]} 25. Nxe5 {[%emt 0:00:43]} dxe5 {[%emt 0:00:07]} 26. Qa1 {[%emt 0:01:17]
} a5 {[%emt 0:11:13]} 27. f3 {[%emt 0:02:19]} axb4 {[%emt 0:08:10]} 28. axb4 {
[%emt 0:00:30]} Qxa1 {[%emt 0:00:04]} 29. Bxa1 {[%emt 0:00:04]} Ra8 {[%emt 0:
00:14]} 30. Nb3 {[%emt 0:00:39]} Rxd1 {[%emt 0:00:46]} 31. Rxd1 {[%emt 0:00:01]
} Ra3 {[%emt 0:00:19]} 32. Nd2 {[%emt 0:02:09]} Bc6 {[%emt 0:03:24]} 33. Bb2 {
[%emt 0:03:52]} Ra2 {[%emt 0:00:35]} 34. Bc3 {[%emt 0:02:39]} Rc2 {[%emt 0:00:
38]} 35. Nb1 {[%emt 0:00:23]} Ba4 {[%emt 0:00:37]} 36. Rd2 {[%emt 0:00:44]}
Rxd2 {[%emt 0:13:06]} 37. Bxd2 {[%emt 0:00:21]} Bc6 {[%emt 0:00:18]} 38. Nc3 {
[%emt 0:00:16]} h5 {[%emt 0:00:52]} 39. Bd3 {[%emt 0:00:43]} Bd6 {[%emt 0:01:
47]} 40. Nd1 {[%emt 0:02:59]} Nd7 {[%emt 0:02:15]} 41. Nb2 {[%emt 0:50:28]} Kf8
{[%emt 0:03:11]} 42. Kf2 {[%emt 0:00:00]} h4 {[%emt 0:03:24]} 43. Bc2 {[%emt 0:
00:00]} f6 {[%emt 0:03:43]} 44. Ba4 {[%emt 0:00:00]} Nb8 {[%emt 0:00:20]} 45.
Bxc6 {[%emt 0:00:00]} Nxc6 {[%emt 0:00:05]} 46. Nd3 {[%emt 0:00:00]} Ke7 {
[%emt 0:06:28]} 47. Bc3 {[%emt 0:00:00]} Kd7 {[%emt 0:02:17]} 48. Ke3 {[%emt 0:
00:00]} g5 {[%emt 0:05:07]} 49. Kd2 {[%emt 0:00:00]} Kc7 {[%emt 0:06:36]} 50.
b5 {[%emt 0:00:00]} Nb8 {[%emt 0:03:08]} 51. Kc2 {[%emt 0:00:00]} Nd7 {[%emt 0:
01:38]} 52. Nb4 {[%emt 0:00:00]} Nf8 {[%emt 0:03:19]} 53. Kb3 {[%emt 0:00:00]}
Ng6 {[%emt 0:02:14]} 54. Bd2 {[%emt 0:00:00]} Be7 {[%emt 0:10:14]} 55. Nd3 {
[%emt 0:00:00]} f5 {[%emt 0:01:42]} 56. Be3 {[%emt 0:00:00]} Kb7 {[%emt 0:02:
02]} 57. Kc2 {[%emt 0:02:03]} Kc7 {[%emt 0:00:32]} 58. Kd1 {[%emt 0:00:22]} Kb7
{[%emt 0:02:47]} 59. Ke1 {[%emt 0:00:27]} Kc7 {[%emt 0:01:20]} 60. Kf1 {
[%emt 0:00:33]} Kb7 {[%emt 0:01:09]} 61. c5 {[%emt 0:15:10]} bxc5 {[%emt 0:03:
08]} 62. Nxc5+ {[%emt 0:00:00]} Bxc5 {[%emt 0:00:38]} 63. Bxc5 {[%emt 0:00:00]}
Kc7 {[%emt 0:00:21]} 64. Kf2 {[%emt 0:00:00]} Kd7 {[%emt 0:07:23]} 65. Kf1 {
[%emt 0:00:00]} Kc7 {[%emt 0:00:27]} 66. Kg1 {[%emt 0:00:00]} Kd7 {[%emt 0:03:
36]} 67. Kf2 {[%emt 0:00:00]} Kc7 {[%emt 0:01:29]} 68. Be3 {[%emt 0:00:00]} Nf4
{[%emt 0:00:05]} 69. g3 {[%emt 0:00:20]} Nh5 {[%emt 0:01:50]} 70. gxh4 {
[%emt 0:02:12]} gxh4 {[%emt 0:00:05]} 71. Bg5 {[%emt 0:05:11]} fxe4 {[%emt 0:
01:24]} 72. fxe4 {[%emt 0:01:00]} Nf4 {[%emt 0:00:29]} 73. Bxh4 {[%emt 0:04:35]
} Nxh3+ {[%emt 0:00:10]} 74. Ke3 {[%emt 0:01:06]} Kb6 {[%emt 0:00:09]} 75. Bf6
{[%emt 0:00:10]} Kxb5 {[%emt 0:00:10]} 76. Bxe5 {[%emt 0:00:04]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.1"]
[White "Oparin, Grigoriy"]
[Black "Firouzja, Alireza"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2654"]
[BlackElo "2770"]
[Annotator "ChessBase"]
[PlyCount "56"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:03]} e5 {[%emt 0:00:08]} 2. Nf3 {[%emt 0:00:04]} Nc6 {
[%emt 0:00:06]} 3. Bb5 {[%emt 0:00:06]} Nf6 {[%emt 0:00:09]} 4. d3 {[%emt 0:00:
07]} Bc5 {[%emt 0:00:22]} 5. Bxc6 {[%emt 0:00:13]} dxc6 {[%emt 0:00:09]} 6. O-O
{[%emt 0:00:12]} Nd7 {[%emt 0:01:19]} 7. c3 {[%emt 0:00:23]} O-O {[%emt 0:07:
14]} 8. d4 {[%emt 0:00:08]} Bd6 {[%emt 0:01:52]} 9. Bg5 {[%emt 0:00:26]} f6 {
[%emt 0:00:05]} 10. Bh4 {[%emt 0:00:03]} Qe8 {[%emt 0:03:03]} 11. Nbd2 {
[%emt 0:00:46]} a5 {[%emt 0:04:33]} 12. Qc2 {[%emt 0:03:03]} Qf7 {[%emt 0:07:
36]} 13. Bg3 {[%emt 0:03:26]} a4 {[%emt 0:04:38]} 14. b3 {[%emt 0:11:06]} exd4
{[%emt 0:03:14]} 15. Bxd6 {[%emt 0:14:39]} cxd6 {[%emt 0:00:42]} 16. Nxd4 {
[%emt 0:00:11]} axb3 {[%emt 0:09:29]} 17. axb3 {[%emt 0:00:06]} Rxa1 {[%emt 0:
00:05]} 18. Rxa1 {[%emt 0:00:04]} d5 {[%emt 0:05:36]} 19. exd5 {[%emt 0:15:40]}
Qxd5 {[%emt 0:00:48]} 20. Nc4 {[%emt 0:00:06]} Ne5 {[%emt 0:03:38]} 21. Nb6 {
[%emt 0:05:37]} Qd8 {[%emt 0:08:16]} 22. Nxc8 {[%emt 0:00:20]} Qxc8 {[%emt 0:
00:05]} 23. Nf5 {[%emt 0:04:33]} Qe6 {[%emt 0:03:22]} 24. Rd1 {[%emt 0:01:40]}
Nf7 {[%emt 0:02:50]} 25. Nd4 {[%emt 0:05:14]} Qe7 {[%emt 0:00:27]} 26. Nf5 {
[%emt 0:00:11]} Qe6 {[%emt 0:00:06]} 27. Nd4 {[%emt 0:00:20]} Qe7 {[%emt 0:00:
04]} 28. Nf5 {[%emt 0:00:04]} Qe6 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.2"]
[White "Caruana, Fabiano"]
[Black "Predke, Alexandr"]
[Result "1/2-1/2"]
[ECO "C90"]
[WhiteElo "2800"]
[BlackElo "2666"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,91,17,14,36,35,32,23,31,32,57,20,30,8,8,9,9,9,9,18,5,8,12,1,5,7,5,10,
0,0,0,-11,-3,-16,0,0,0,-51,0,0,0,-6,-4,-10,-8,-8,0,0,0,-25,0,0,0,0,14,14,14,16,
14,0,12,17,21,23,20,5,5,5,5,5,13,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6
5. O-O Be7 6. d3 d6 7. c3 O-O 8. Nbd2 Re8 9. Re1 Bf8 10. Nf1 h6 11. Ng3 b5 12.
Bb3 a5 {C90: Closed Ruy Lopez with 7...d6: Early deviations.} 13. a4 b4 14. h3
{[#]} bxc3 $146 {White has an edge.} ({Predecessor:} 14... Rb8 15. Qc2 Ba6 16.
Ba2 Nd7 17. d4 bxc3 18. bxc3 exd4 19. Nxd4 Nde5 20. Be3 Nxd4 21. Bxd4 {1-0 (40)
Roelli,R-Aschenbrenner,R Mureck 1996}) 15. bxc3 {[%cal Bb2c3,Bc3c4][%mdl 32]}
Be6 16. Bc2 d5 17. exd5 Qxd5 18. Rb1 Rab8 19. Rb5 {[%mdl 64] [#] Decoy} Rxb5
20. c4 $1 {[%cal Rc4d5]} Qd6 21. axb5 Nd4 22. Bb2 Nxf3+ 23. Qxf3 Qb4 $36 {
[%mdl 2048] Black is pushing.} 24. Rb1 Qd2 25. Qd1 (25. Qe2 {is interesting.}
Qxe2 26. Nxe2 Nd7 27. Bc3 e4 28. Bxa5 exd3 29. Bxd3 Nc5 30. Bc2) 25... Qxd1+
26. Bxd1 Bb4 27. Bf3 e4 28. dxe4 Bxc4 29. e5 (29. Rc1 $11 Bxb5 30. Rxc7) 29...
Nd5 (29... Nh7 $1 $15) 30. Rc1 $11 Nb6 31. Nf5 Bd3 32. Ne3 Bxb5 33. Rxc7 Re7
34. Rc1 Rd7 35. Be4 Bd2 36. Rc5 Bd3 37. Bf3 Kh7 {Strongly threatening ...Bxe3.}
38. Rc6 Bxe3 39. fxe3 Nc4 {[%mdl 64] [#] Double Attack} 40. Bd4 Re7 41. Rc5 a4
42. Bc6 {Threatens to win with Bb5.} a3 43. Bb5 {The position is equal.} Nb2
44. Bxb2 Bxb5 45. Bxa3 Rb7 46. e6 {Weighted Error Value: White=0.09/Black=0.07}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.3"]
[White "Yu, Yangyi"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2704"]
[BlackElo "2763"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,78,37,0,16,0,2,16,29,9,24,18,24,13,25,16,23,20,25,22,29,8,26,23,30,
26,23,37,22,34,40,25,0,45,85,39,83,74,96,100,97,88,100,34,32,41,29,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5.
Nc3 a6 6. h3 e5 7. Nb3 Be6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6
Be3 Ng4 and 6 Be3 e5.} 8. Be3 Be7 9. f4 exf4 10. Bxf4 Nc6 11. Qe2 Nd7 12. O-O-O
Nce5 13. Kb1 Rc8 14. Qe3 O-O 15. g4 Re8 16. Nd4 Qa5 17. a3 b5 18. Nf5 {[#]} b4
$146 ({Predecessor:} 18... Bxf5 19. gxf5 Nf6 20. Nd5 Nxd5 21. Rxd5 Bf6 22. Rxd6
Qc7 23. Rd2 Qb7 24. Bxe5 Rxe5 {1/2-1/2 (49) Straka,Z (2576)-Daubenfeld,N (2533)
ICCF email 2017}) 19. Nxe7+ Rxe7 20. axb4 Qxb4 {[#] aiming for ...Rb8.} 21. Qd4
$1 {[%cal Rd4b4]} Qa5 22. Qxd6 Ree8 23. Nd5 Qa4 24. Rh2 Bxd5 25. Qxd5 Nf6 {[#]}
26. Qb3 {[%cal Rb3a4]} Qxe4 27. Bxe5 (27. Rf2 $16) 27... Qxe5 $14 28. Re2 Ne4
$1 29. Qd5 (29. Rd5 $5 {[%cal Rd5e5]} Qe6 30. Rd3 $11) 29... Qf4 {The position
is equal.} 30. Ka1 g6 {Hoping for ...Re5.} 31. Rde1 {[%cal Re2e4]} Rc5 32. Qxc5
Nxc5 33. Rxe8+ Kg7 34. R8e3 (34. Kb1 {with more complications.} Qb4 35. b3 Na4
36. Bxa6 Nc3+ 37. Kb2) 34... Qd4 35. Kb1 Na4 {[%csl Ga4][%cal Rd4b2]} 36. Rb3
Nc5 37. Ra3 Na4 {[%csl Ga4][%cal Rd4b2]} 38. Rb3 Nc5 39. Ra3 Na4 {[%csl Ga4]
[%cal Rd4b2] Weighted Error Value: White=0.07/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.4"]
[White "Deac, Bogdan-Daniel"]
[Black "Esipenko, Andrey"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2643"]
[BlackElo "2720"]
[Annotator "TA"]
[PlyCount "87"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,87,13,29,27,31,21,23,18,18,20,23,25,27,16,25,36,68,65,61,31,62,0,0,0,
16,6,9,12,22,10,11,17,16,12,12,9,22,16,22,22,22,22,22,22,22,0,0,0,22,19,21,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 {Gelfand/Huzman}
Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Bf4 dxc4 6. e3 {D37: Queen's Gambit
Declined: 5 Bf4.} Bd6 7. Bg5 h6 8. Bh4 {White has an edge.} a6 9. a4 c5 10.
Bxc4 cxd4 11. exd4 O-O 12. O-O Qc7 13. Bb3 b6 14. Rc1 Qb8 {[#]} 15. Qe2 $146 (
15. d5 $14) ({Predecessor:} 15. d5 e5 16. Nd2 e4 17. Ncxe4 Nxe4 18. Nxe4 Bxh2+
19. Kh1 Qf4 20. Be7 Qxe4 21. Re1 {1-0 (97) Gelfand,B (2764)-Dominguez Perez,L 
(2757) Elancourt 2013 CBM 157 [Gelfand/Huzman]}) 15... Bb7 $11 {The position
is equal.} 16. Bxf6 Bxf3 ({Don't play} 16... gxf6 $6 17. d5 $16) 17. Qxf3 {
[#] Bh4 is the strong threat.} Nxf6 ({Wrong is} 17... Bxh2+ $2 18. Kh1 $18) 18.
g3 b5 19. axb5 axb5 20. Ne4 Be7 21. Nxf6+ Bxf6 22. d5 exd5 23. Bxd5 Bxb2 {
[#] Threatens to win with ...Ra3.} 24. Rb1 Ra3 25. Qe2 Bf6 26. Rxb5 Qe8 27. Qc4
(27. Qh5 {feels hotter.} Bd4 28. Rb7 Ra7 29. Rxa7 Bxa7 30. Rd1) 27... Rc3 28.
Qb4 Be7 29. Qxc3 Qxb5 30. Qc4 (30. Qf3 {keeps more tension.} Qb2 31. Qe4 Bf6
32. Rb1 Qd4 33. Qf3) 30... Qxc4 31. Bxc4 {[%mdl 4096] Endgame KRB-KRB} Rc8 32.
Rc1 {aiming for Bxf7+!} Kf8 33. Rc2 Bf6 34. Bd3 Rxc2 35. Bxc2 {KB-KB} g6 36. h4
h5 37. Kg2 Kg7 38. f4 Bd4 39. f5 Kf6 40. fxg6 fxg6 41. g4 hxg4 42. Kg3 g5 43.
Kxg4 gxh4 44. Kxh4 {Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.5"]
[White "Sargissian, Gabriel"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[ECO "D44"]
[WhiteElo "2664"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 35,60,70,66,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5
2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. Nxg5
hxg5 10. Bxg5 Nbd7 11. g3 Bb7 12. Bg2 Qb6 13. exf6 O-O-O 14. O-O c5 15. d5 b4
16. Rb1 Qa6 17. dxe6 Bxg2 18. e7 Bxf1 {[#]} 19. Qd5 {D44: Semi-Slav: Botvinnik
System.} Bxe7 {The position is equal.} 20. fxe7 Bd3 $1 (20... Rdg8 $6 21. Ne4
$16) 21. exd8=Q+ Rxd8 22. Ne4 {[%cal Re4d6]} ({Avoid the trap} 22. Bxd8 $2 bxc3
23. Bg5 (23. Qa8+ $2 Nb8 $19) 23... Bxb1 $19) 22... Bxb1 23. Nd6+ {[%mdl 64] 
[#] Double Attack} Kc7 24. Bf4 Kb6 25. Nxc4+ ({Reject} 25. Nxf7 Qc8 $17) 25...
Kb5 {White must now prevent ...Nb6.} 26. Nd6+ Kb6 {[#]} 27. Nc4+ $5 $146 {
[%mdl 8] New and interesting.} ({Predecessor:} 27. a4 bxa3 28. Nc4+ Qxc4 29.
Qxc4 a2 30. Qb3+ Kc6 31. Qf3+ Kb6 32. Qb3+ Kc6 33. Qf3+ Kb6 34. Qb3+ {1/2-1/2 
(34) Bologan,V (2607)-Inarkiev,E (2660) Poikovsky 2015}) 27... Kb5 {aiming for
...Ne5!} 28. Nd6+ Kb6 29. Nc4+ Kb5 {Hoping for ...Ne5!} 30. Nd6+ Kb6 {A rather
calm draw.  Weighted Error Value: White=0.05/Black=0.00} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.6"]
[White "Anton Guijarro, David"]
[Black "Sevian, Samuel"]
[Result "1/2-1/2"]
[ECO "D04"]
[WhiteElo "2658"]
[BlackElo "2654"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,2,10,8,14,8,8,4,7,8,14,5,0,0,8,3,0,-10,0,-7,-12,0,-13,-25,0,0,0,0,
8,7,12,7,8,0,0,0,0,1,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 d5 3. e3
a6 4. Bd3 Bg4 5. c4 dxc4 6. Bxc4 {Strongly threatening Ne5. D04: Colle System.}
e6 7. O-O {[#]} c5 $146 ({Predecessor:} 7... Bd6 8. Nc3 Nc6 9. h3 Bh5 10. b3
O-O 11. Bb2 Qe7 12. g4 Bg6 13. Nh4 Rad8 14. Nxg6 hxg6 {0-1 (32) Albadri,A 
(2216)-Ragger,M (2614) Vienna 2010}) 8. dxc5 Qxd1 9. Rxd1 Bxc5 10. a3 O-O 11.
b4 Be7 12. Bb2 a5 13. bxa5 Nc6 14. Nbd2 Nxa5 15. Bb5 Nd5 16. Rdc1 Bxf3 17. gxf3
{The position is equal.} Bf6 18. Bxf6 Nxf6 19. Rc2 Rfd8 20. Rb1 Kf8 (20... Rdc8
{looks sharper.} 21. Rbb2 g5 22. a4 b6 23. Kg2 Kg7) 21. a4 Rac8 22. Rbc1 Rxc2
23. Rxc2 Nd5 24. Ne4 Nb6 25. Kg2 Rc8 26. Rb2 Ke7 27. f4 Nd5 28. h4 g6 29. Ng5
b6 30. Nf3 Nc4 {A rather calm draw.  Weighted Error Value: White=0.03/Black=0.
01} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.7"]
[White "Howell, David W L"]
[Black "Keymer, Vincent"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2658"]
[BlackElo "2630"]
[Annotator "RC"]
[PlyCount "152"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. Nf3 {[%emt 0:03:46]} d5 {[%emt 0:00:06]} 2. g3 {[%emt 0:00:18]} c6 {[%emt 0:
00:20]} 3. Bg2 {[%emt 0:02:03]} Bg4 {[%emt 0:00:06]} 4. c4 {[%emt 0:03:26]} e6
{[%emt 0:09:09]} 5. cxd5 {[%emt 0:01:23]} Bxf3 {[%emt 0:01:21]} 6. Bxf3 {
[%emt 0:00:11]} cxd5 {[%emt 0:00:04]} 7. O-O {[%emt 0:00:49]} Nc6 {[%emt 0:01:
11]} 8. d4 {[%emt 0:03:01]} Nf6 {[%emt 0:06:31]} 9. Nc3 {[%emt 0:02:01]} Be7 {
[%emt 0:00:10]} 10. e3 {[%emt 0:00:22]} O-O {[%emt 0:00:08]} 11. Bd2 {[%emt 0:
07:36]} Na5 {[%emt 0:02:08]} 12. b3 {[%emt 0:14:26]} Nc6 {[%emt 0:03:01]} 13.
a3 {[%emt 0:09:16]} Rc8 {[%emt 0:06:08]} 14. Qb1 {[%emt 0:10:57]} e5 {[%emt 0:
17:53]} 15. dxe5 {[%emt 0:07:57]} Nxe5 {[%emt 0:00:07]} 16. Bg2 {[%emt 0:00:10]
} Ne4 {[%emt 0:03:06]} 17. Nxe4 {[%emt 0:06:18]} dxe4 {[%emt 0:00:17]} 18. Rd1
{[%emt 0:00:13]} f5 {[%emt 0:00:51]} 19. Bc3 {[%emt 0:02:47]} Nd3 {[%emt 0:26:
37]} 20. Bd4 {[%emt 0:01:47]} Bf6 {[%emt 0:01:16]} 21. Bf1 {[%emt 0:00:31]}
Bxd4 {[%emt 0:00:05]} 22. Bxd3 {[%emt 0:02:54]} exd3 {[%emt 0:00:23]} 23. Rxd3
{[%emt 0:05:56]} Bxa1 {[%emt 0:01:19]} 24. Rxd8 {[%emt 0:00:06]} Rfxd8 {
[%emt 0:02:13]} 25. Qxa1 {[%emt 0:00:07]} Rd5 {[%emt 0:01:52]} 26. Qa2 {
[%emt 0:06:04]} Kh8 {[%emt 0:07:52]} 27. b4 {[%emt 0:06:10]} Rcd8 {[%emt 0:00:
06]} 28. Qc2 {[%emt 0:03:30]} a6 {[%emt 0:01:24]} 29. a4 {[%emt 0:04:32]} h6 {
[%emt 0:03:38]} 30. Kg2 {[%emt 0:00:15]} Kg8 {[%emt 0:04:17]} 31. h3 {[%emt 0:
00:41]} Kh8 {[%emt 0:03:26]} 32. Kf3 {[%emt 0:01:00]} R5d6 {[%emt 0:03:14]} 33.
Qc5 {[%emt 0:01:25]} Rd5 {[%emt 0:00:57]} 34. Qe7 {[%emt 0:03:38]} R8d7 {
[%emt 0:00:33]} 35. Qe6 {[%emt 0:01:08]} Kh7 {[%emt 0:00:27]} 36. Kg2 {[%emt 0:
00:53]} R7d6 {[%emt 0:01:09]} 37. Qc8 {[%emt 0:00:26]} b5 {[%emt 0:02:25]} 38.
a5 {[%emt 0:00:21]} Rf6 {[%emt 0:00:15]} 39. Qc2 {[%emt 0:00:43]} Re5 {[%emt 0:
01:49]} 40. Qc3 {[%emt 0:00:51]} Re4 {[%emt 0:01:50]} 41. h4 {[%emt 0:28:04]}
Rc4 {[%emt 0:02:47]} 42. Qd2 {[%emt 0:00:31]} Kg6 {[%emt 0:03:45]} 43. Kh3 {
[%emt 0:01:56]} Re4 {[%emt 0:05:38]} 44. Qc3 {[%emt 0:01:17]} Rc4 {[%emt 0:01:
51]} 45. Qb2 {[%emt 0:00:56]} Re4 {[%emt 0:03:51]} 46. Qb3 {[%emt 0:03:05]} Rc4
{[%emt 0:01:10]} 47. Qb1 {[%emt 0:00:51]} h5 {[%emt 0:04:27]} 48. Qb2 {[%emt 0:
00:22]} Rd6 {[%emt 0:00:40]} 49. Qe5 {[%emt 0:01:43]} Rf6 {[%emt 0:00:59]} 50.
Qe8+ {[%emt 0:02:36]} Kh6 {[%emt 0:00:30]} 51. Qh8+ {[%emt 0:01:06]} Kg6 {
[%emt 0:00:05]} 52. Qe8+ {[%emt 0:00:05]} Kh6 {[%emt 0:00:04]} 53. Qe7 {
[%emt 0:08:56]} Re4 {[%emt 0:00:39]} 54. Qc5 {[%emt 0:00:04]} Rc4 {[%emt 0:01:
04]} 55. Qe7 {[%emt 0:00:06]} Re4 {[%emt 0:00:05]} 56. Qc5 {[%emt 0:00:09]} Rc4
{[%emt 0:00:46]} 57. Qd5 {[%emt 0:04:19]} Re4 {[%emt 0:07:47]} 58. Qd2 {
[%emt 0:01:09]} Rfe6 {[%emt 0:00:28]} 59. Kg2 {[%emt 0:01:30]} Kg6 {[%emt 0:01:
31]} 60. Kf1 {[%emt 0:00:27]} Rc6 {[%emt 0:03:02]} 61. Ke2 {[%emt 0:02:55]}
Rce6 {[%emt 0:05:54]} 62. Kf3 {[%emt 0:02:52]} Rf6 {[%emt 0:00:29]} 63. Kg2 {
[%emt 0:04:57]} Rfe6 {[%emt 0:00:13]} 64. Kh2 {[%emt 0:00:09]} Kh7 {[%emt 0:03:
40]} 65. Kh1 {[%emt 0:03:12]} Rc6 {[%emt 0:01:49]} 66. Kg2 {[%emt 0:01:30]}
Rce6 {[%emt 0:00:52]} 67. Kf1 {[%emt 0:01:01]} Kh6 {[%emt 0:06:48]} 68. Ke1 {
[%emt 0:00:38]} Kh7 {[%emt 0:00:46]} 69. Qd5 {[%emt 0:00:41]} Rf6 {[%emt 0:01:
07]} 70. Qd2 {[%emt 0:00:29]} Rfe6 {[%emt 0:00:46]} 71. Kd1 {[%emt 0:00:37]}
Kh6 {[%emt 0:01:40]} 72. Kc2 {[%emt 0:01:00]} Rc4+ {[%emt 0:00:35]} 73. Kd1 {
[%emt 0:01:08]} Rce4 {[%emt 0:00:16]} 74. Ke2 {[%emt 0:01:33]} Kg6 {[%emt 0:00:
18]} 75. Qd5 {[%emt 0:00:19]} Rf6 {[%emt 0:01:35]} 76. Qd2 {[%emt 0:00:45]}
Rfe6 {[%emt 0:02:20]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.8"]
[White "Kryvoruchko, Yuriy"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2686"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,61,8,9,24,16,8,27,20,21,14,15,18,11,14,12,19,8,12,10,35,-2,-2,-2,-2,
-6,-2,-3,0,0,0,0,0,0,0,0,0,0,0,-2,-2,-2,-2,-2,0,0,0,-15]} 1. e4 e5 2. Nf3 Nc6
3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Bf6
{C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 10. Re2 b6 11. Re1 Bb7 {White
has an edge.} 12. Bf4 Nf5 13. c3 {[#]} Re8 $146 ({Predecessor:} 13... d6 14.
Qg4 Nh4 15. Nd2 Re8 16. Rxe8+ Qxe8 17. Bg5 Qe7 18. Bxf6 Qxf6 19. Re1 h6 {
1/2-1/2 (68) Goslawski,M (2114)-Przedmojski,R (2357) Warsaw 2021}) 14. Nd2 Rxe1
15. Qxe1 g5 16. Bg3 Nxg3 17. hxg3 c5 18. Ne4 cxd4 {The position is equal.} 19.
Rd1 Bxe4 20. Qxe4 d5 21. Qf5 h6 22. cxd4 Qd6 23. Be2 Re8 24. Bf3 Qe6 25. Qxd5
Qxd5 26. Bxd5 $11 {KRB-KRB} Rd8 27. Bc4 Rxd4 28. Rxd4 Bxd4 29. b3 Kg7 30. Kf1
f5 31. f3 {A rather calm draw.  Weighted Error Value: White=0.03/Black=0.03}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.9"]
[White "Sjugirov, Sanan"]
[Black "Vitiugov, Nikita"]
[Result "1/2-1/2"]
[ECO "C90"]
[WhiteElo "2663"]
[BlackElo "2727"]
[Annotator "RC"]
[PlyCount "134"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:06]} e5 {[%emt 0:00:07]} 2. Nf3 {[%emt 0:00:09]} Nc6 {
[%emt 0:00:07]} 3. Bb5 {[%emt 0:00:09]} a6 {[%emt 0:00:07]} 4. Ba4 {[%emt 0:00:
07]} Nf6 {[%emt 0:00:06]} 5. O-O {[%emt 0:00:09]} Be7 {[%emt 0:00:15]} 6. Re1 {
[%emt 0:00:12]} b5 {[%emt 0:00:16]} 7. Bb3 {[%emt 0:00:05]} O-O {[%emt 0:00:05]
} 8. d3 {[%emt 0:00:15]} d6 {[%emt 0:00:40]} 9. c3 {[%emt 0:00:05]} Na5 {
[%emt 0:06:15]} 10. Bc2 {[%emt 0:00:08]} c5 {[%emt 0:00:04]} 11. Nbd2 {[%emt 0:
00:12]} Re8 {[%emt 0:01:22]} 12. h3 {[%emt 0:00:50]} Bf8 {[%emt 0:01:49]} 13.
Nf1 {[%emt 0:01:56]} h6 {[%emt 0:00:09]} 14. d4 {[%emt 0:10:42]} exd4 {[%emt 0:
02:41]} 15. cxd4 {[%emt 0:01:59]} cxd4 {[%emt 0:00:05]} 16. Ng3 {[%emt 0:05:42]
} Bb7 {[%emt 0:00:58]} 17. Nxd4 {[%emt 0:01:17]} Nc4 {[%emt 0:00:59]} 18. b3 {
[%emt 0:03:48]} Ne5 {[%emt 0:00:56]} 19. Bb2 {[%emt 0:04:47]} Rc8 {[%emt 0:01:
07]} 20. Qd2 {[%emt 0:03:13]} Qb6 {[%emt 0:10:30]} 21. Ndf5 {[%emt 0:08:47]} g6
{[%emt 0:07:39]} 22. Ne3 {[%emt 0:01:12]} h5 {[%emt 0:04:42]} 23. Bd4 {[%emt 0:
18:03]} Qd8 {[%emt 0:06:26]} 24. f3 {[%emt 0:02:11]} h4 {[%emt 0:10:39]} 25.
Ngf1 {[%emt 0:01:08]} Bh6 {[%emt 0:05:39]} 26. Rad1 {[%emt 0:05:32]} Bf4 {
[%emt 0:05:40]} 27. Qf2 {[%emt 0:03:32]} Nh5 {[%emt 0:02:13]} 28. Ng4 {[%emt 0:
03:46]} Qg5 {[%emt 0:02:08]} 29. b4 {[%emt 0:03:42]} Nxg4 {[%emt 0:10:50]} 30.
hxg4 {[%emt 0:02:29]} Bg3 {[%emt 0:04:52]} 31. Nxg3 {[%emt 0:09:05]} hxg3 {
[%emt 0:00:21]} 32. Qd2 {[%emt 0:03:26]} Nf4 {[%emt 0:01:48]} 33. Bb3 {[%emt 0:
00:27]} Qh6 {[%emt 0:03:26]} 34. g5 {[%emt 0:00:42]} Qh4 {[%emt 0:09:51]} 35.
Kf1 {[%emt 0:11:25]} Rc3 {[%emt 0:02:04]} 36. Qxf4 {[%emt 0:00:06]} Qxf4 {
[%emt 0:00:07]} 37. Bxc3 {[%emt 0:00:03]} Qxg5 {[%emt 0:08:20]} 38. Ke2 {
[%emt 0:00:13]} d5 {[%emt 0:02:39]} 39. Rh1 {[%emt 0:00:57]} f6 {[%emt 0:00:13]
} 40. Rh3 {[%emt 0:01:52]} Bc6 {[%emt 0:01:32]} 41. Rdh1 {[%emt 0:52:03]} Kf7 {
[%emt 0:12:46]} 42. Rh7+ {[%emt 0:00:00]} Ke6 {[%emt 0:03:38]} 43. Rd1 {
[%emt 0:00:00]} f5 {[%emt 0:07:46]} 44. Bd2 {[%emt 0:00:00]} Qd8 {[%emt 0:05:
39]} 45. Be3 {[%emt 0:00:00]} Kf6 {[%emt 0:06:05]} 46. Rc1 {[%emt 0:00:00]} Qd6
{[%emt 0:05:44]} 47. Ra7 {[%emt 0:03:50]} fxe4 {[%emt 0:04:18]} 48. Bd4+ {
[%emt 0:01:00]} Kg5 {[%emt 0:00:14]} 49. f4+ {[%emt 0:00:06]} Kg4 {[%emt 0:00:
22]} 50. Rf7 {[%emt 0:01:29]} e3 {[%emt 0:01:09]} 51. Bd1 {[%emt 0:01:57]} Kh5
{[%emt 0:07:09]} 52. Rh7+ {[%emt 0:00:40]} Kg4 {[%emt 0:00:01]} 53. Rf7 {
[%emt 0:00:38]} Kh5 {[%emt 0:00:01]} 54. Rh7+ {[%emt 0:00:43]} Kg4 {[%emt 0:00:
01]} 55. Bxe3 {[%emt 0:00:33]} d4 {[%emt 0:02:03]} 56. Kf1+ {[%emt 0:00:19]}
Kf5 {[%emt 0:00:02]} 57. Rxc6 {[%emt 0:00:09]} Qxc6 {[%emt 0:00:29]} 58. Rf7+ {
[%emt 0:00:04]} Ke6 {[%emt 0:01:28]} 59. Bb3+ {[%emt 0:00:05]} Qc4+ {[%emt 0:
00:09]} 60. Bxc4+ {[%emt 0:00:04]} bxc4 {[%emt 0:00:03]} 61. Rc7 {[%emt 0:05:
19]} dxe3 {[%emt 0:01:24]} 62. Rxc4 {[%emt 0:00:24]} Kd5 {[%emt 0:01:41]} 63.
Rc5+ {[%emt 0:01:41]} Kd4 {[%emt 0:03:05]} 64. Ke2 {[%emt 0:00:06]} Rf8 {
[%emt 0:06:06]} 65. Kf3 {[%emt 0:01:05]} Re8 {[%emt 0:01:08]} 66. Ke2 {[%emt 0:
00:48]} Rf8 {[%emt 0:01:46]} 67. Kf3 {[%emt 0:01:56]} Re8 {[%emt 0:00:37]}
1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.10"]
[White "Harikrishna, Pentala"]
[Black "Kuzubov, Yuriy"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2719"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,83,13,33,12,16,11,16,11,16,10,0,8,0,-4,7,-14,-13,-18,9,0,0,0,8,8,8,0,
31,0,10,0,0,0,12,11,26,0,0,0,0,-9,4,7,19,21,12,12,12,1,4,0,8,8,8,8,8,0,8,8,8,8,
8,8,8,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. cxd5 exd5 6.
Bg5 c6 7. e3 Be7 8. Qc2 Nh5 9. Bxe7 {D36: Queen's Gambit Declined: Exchange
Variation: Main line (5 Bg5 c6 6 Qc2).} Qxe7 10. g4 Nhf6 11. h3 Nb6 12. O-O-O
Be6 13. Bd3 O-O-O {[#]} 14. Nd2 $146 ({Predecessor:} 14. Kb1 Kb8 15. Rc1 g6 16.
Nd2 Ne8 17. Nb3 Nd6 18. Nc5 Bc8 19. a4 Nd7 20. b4 {0-1 (55) Krasenkow,M (2597)
-Sjugirov,S (2663) Tornelo INT 2021}) 14... Kb8 15. Nb3 Bc8 16. Kb1 Rhe8 17.
Rde1 h5 18. f3 hxg4 19. hxg4 Rh8 20. Qg2 Rde8 21. g5 Nfd7 22. e4 Rxh1 23. Rxh1
dxe4 24. fxe4 Nf8 25. Qg3+ Qc7 {The position is equal.} 26. Qxc7+ Kxc7 27. a4
Be6 28. d5 cxd5 29. a5 $1 {[%cal Ra5b6]} Nc8 30. exd5 Bd7 31. Nc5 Nd6 32. Rh8
Kd8 33. Kc2 b6 34. axb6 axb6 35. Nb3 (35. N3e4 {is interesting.} Nf5 36. Nxd7
Nxd7 37. Rxe8+ Kxe8 38. d6) 35... Nf5 36. Kd2 Ng6 37. Rxe8+ Kxe8 38. Bxf5 Bxf5
39. Nd4 Bd7 40. Ke3 Ne5 41. Ke4 f6 42. gxf6 {An uneventful encounter. 
Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.11"]
[White "Nihal Sarin"]
[Black "Dubov, Daniil"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2652"]
[BlackElo "2714"]
[Annotator "ChessBase"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. Nf3 {[%emt 0:00:20]} d5 {[%emt 0:00:16]} 2. d4 {[%emt 0:00:07]} Nf6 {
[%emt 0:00:05]} 3. Bf4 {[%emt 0:00:04]} g6 {[%emt 0:00:13]} 4. c3 {[%emt 0:03:
44]} Bg7 {[%emt 0:00:07]} 5. h3 {[%emt 0:00:10]} O-O {[%emt 0:00:07]} 6. e3 {
[%emt 0:00:02]} c5 {[%emt 0:00:40]} 7. Nbd2 {[%emt 0:03:04]} Nfd7 {[%emt 0:01:
29]} 8. Be2 {[%emt 0:23:02]} Nc6 {[%emt 0:00:08]} 9. O-O {[%emt 0:00:04]} b6 {
[%emt 0:00:23]} 10. b4 {[%emt 0:17:45]} e5 {[%emt 0:02:11]} 11. dxe5 {[%emt 0:
01:44]} Ndxe5 {[%emt 0:00:50]} 12. Nxe5 {[%emt 0:04:10]} Nxe5 {[%emt 0:00:13]}
13. Nb3 {[%emt 0:12:05]} Bf5 {[%emt 0:09:56]} 14. bxc5 {[%emt 0:01:08]} bxc5 {
[%emt 0:00:07]} 15. Nxc5 {[%emt 0:01:45]} Rc8 {[%emt 0:06:34]} 16. Nb3 {
[%emt 0:00:45]} Rxc3 {[%emt 0:01:11]} 17. Nd4 {[%emt 0:00:17]} Bd7 {[%emt 0:01:
32]} 18. Qd2 {[%emt 0:07:34]} Qa5 {[%emt 0:04:20]} 19. Rac1 {[%emt 0:12:05]}
Ra3 {[%emt 0:05:08]} 20. Qxa5 {[%emt 0:00:08]} Rxa5 {[%emt 0:00:05]} 21. Rc7 {
[%emt 0:02:26]} Rxa2 {[%emt 0:03:32]} 22. Bxe5 {[%emt 0:05:09]} Bxe5 {[%emt 0:
00:07]} 23. Rxd7 {[%emt 0:00:02]} Bxd4 {[%emt 0:00:06]} 24. Bf3 {[%emt 0:00:02]
} Bb6 {[%emt 0:00:05]} 25. Bxd5 {[%emt 0:00:03]} Rc2 {[%emt 0:00:04]} 26. Ra1 {
[%emt 0:02:14]} Rcc8 {[%emt 0:01:51]} 27. Rd1 {[%emt 0:02:19]} Rc7 {[%emt 0:00:
11]} 28. Rxc7 {[%emt 0:01:13]} Bxc7 {[%emt 0:00:02]} 29. Bb3 {[%emt 0:00:06]}
Rd8 {[%emt 0:00:07]} 30. Rxd8+ {[%emt 0:00:04]} Bxd8 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.12"]
[White "Petrosyan, Manuel"]
[Black "Fedoseev, Vladimir"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2605"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,91,48,55,55,41,7,41,52,44,54,42,44,45,46,50,52,75,17,11,18,67,64,58,
27,25,5,6,3,14,15,15,18,15,15,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-28000]} 1. Nf3 Nf6 2. c4 g6
3. Nc3 Bg7 4. e4 e5 5. Nxe5 O-O 6. Nf3 {A16: English Opening: 1...Nf6 with ...
d5.} Re8 7. Bd3 d5 (7... Nxe4 $5 8. Bxe4 (8. Nxe4 f5 $11 {[%mdl 64] Pin}) 8...
Bxc3 $11) 8. cxd5 {White is slightly better.} Bf5 {[%cal Rf6e4] [#]} 9. O-O
$146 ({Predecessor:} 9. Qe2 Nbd7 10. Bc2 Nxe4 11. Nxe4 Bxe4 12. Bxe4 f5 13. d3
Nc5 14. O-O fxe4 15. dxe4 Rxe4 {1-0 (34) Lenderman,A (2648)-Chigaev,M (2644)
chess24.com INT 2020}) 9... Nxe4 10. Bxe4 Bxe4 11. Nxe4 Rxe4 12. Qb3 Na6 13.
Qxb7 ({Better is} 13. d4 $1 $16) 13... Nc5 $11 14. Qb5 Qd6 15. d4 Bxd4 16. Nxd4
(16. Rd1 {looks sharper.} Rae8 17. Qf1 Bf6 18. Be3 Bxb2 19. Rab1) 16... Rxd4
17. Be3 Rxd5 {The position is equal.} 18. Rac1 a6 19. Qb4 a5 20. Qa3 Nd3 21.
Qxd6 cxd6 22. Rcd1 f5 23. Rd2 f4 24. Rfd1 fxe3 25. fxe3 Nxb2 26. Rxd5 {[#] Rc1
is the strong threat.} Nxd1 27. Rxd1 {[%mdl 4096] Endgame KR-KR} Rb8 28. Rxd6
Rb1+ 29. Kf2 Rb2+ 30. Kf3 Rxa2 31. Rd7 a4 32. Ra7 a3 33. h4 h5 34. e4 Kf8 35.
e5 Ke8 36. g3 Kf8 37. Kf4 {Black should prevent Kg5.} Rf2+ 38. Kg5 Rf7 39. Rxa3
Kg7 {[%csl Gg6][%cal Rf7f5] [#]} 40. g4 hxg4 41. Kxg4 Rf5 42. Re3 Rh5 43. e6 {
e7 would kill now.} Kf8 44. e7+ Ke8 45. Re6 Ra5 46. Rxg6 $2 {[%mdl 40960]
Weighted Error Value: White=0.05/Black=0.04. An unexpected result.} (46. Re4
$11) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.13"]
[White "Xiong, Jeffery"]
[Black "Sarana, Alexey"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2700"]
[BlackElo "2649"]
[Annotator "TA"]
[PlyCount "74"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,74,11,8,4,23,6,14,-3,50,44,62,41,41,38,39,37,41,32,37,38,37,36,47,44,
57,52,63,47,49,58,62,57,80,59,85,80,108,68,73,41,34,21,125,125,114,130,127,127,
149,149,203,152,127,123,139,71,69,29,33,28,45,19,5,14,85]} 1. e4 c5 2. Nc3 d6
3. f4 Nc6 4. Nf3 Nf6 5. Bb5 Bd7 6. O-O e6 $1 {6...e6 is better than 6...a6.} 7.
d3 {B23: Closed Sicilian: Lines without g3.} a6 8. Bc4 b5 9. Bb3 Be7 ({Better
is} 9... b4 $11 10. Ne2 Be7) 10. e5 $1 $14 {[%cal Re5f6] [#]} Ng4 $146 ({
Predecessor:} 10... dxe5 11. fxe5 Ng4 12. Qe2 Qb6 13. Kh1 h5 14. a3 Nd4 15.
Nxd4 cxd4 16. Qf3 O-O 17. Ne4 Bc6 18. Bf4 a5 19. h3 Ne3 20. Bxe3 dxe3 21. c3
Bh4 22. Bc2 {1-0 (22) Holmberg,P (1942)-Popov,A (1762) IECG email 2006}) 11. h3
{[#] aiming for exd6.} Nh6 $1 12. exd6 Bxd6 13. Ne4 Qc7 14. Nxd6+ Qxd6 15. c3
O-O 16. Qe2 Rac8 17. g4 f5 18. Ne5 Be8 19. Bd2 Na5 20. Bc2 Nf7 21. Rae1 Rd8 22.
Bc1 Qc7 23. Qf2 Rd5 {[%cal Rf7e5]} 24. c4 Rd8 25. Nxf7 Bxf7 26. Re5 Nb7 (26...
Nc6 $11 {remains equal.} 27. Rxc5 Qd7) 27. b3 $16 fxg4 28. hxg4 Bg6 29. Qe3 (
29. Rxe6 $6 Bxd3 30. Bxd3 Rxd3 $14) 29... Rfe8 30. Bb2 Qd7 (30... Na5 $16 31.
Rxc5 Nc6) 31. Re1 Na5 {[%cal Bb7a5,Ba5c6,Bc6b4][%mdl 32]} 32. Rxc5 {Hoping for
Qe5.} Nc6 {[#]} 33. cxb5 ({White should try} 33. Bc3 $1) 33... axb5 34. Rc1 e5
35. f5 {Strongly threatening Qe4.} Bf7 36. Bd1 Nb4 37. Be2 ({Don't go for} 37.
Rxe5 $2 Nxd3 38. Rxe8+ Rxe8 $19) 37... Qa7 {Weighted Error Value: White=0.12/
Black=0.17} (37... Nxa2 $11 38. Rf1 Qa7) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.14"]
[White "Shevchenko, Kirill"]
[Black "Artemiev, Vladislav"]
[Result "0-1"]
[ECO "C90"]
[WhiteElo "2632"]
[BlackElo "2699"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,64,20,16,37,29,30,17,25,14,23,5,7,0,3,-30,-18,-10,-12,-41,-32,-36,
-31,-23,-27,-64,-50,-50,-49,-92,-80,-95,-67,-400,-391,-394,-384,-441,-441,-431,
-426,-1015,-760,-1586,-1363]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 d6 5. O-O
Be7 6. Re1 O-O 7. c3 a6 8. Ba4 Re8 9. Nbd2 Bf8 10. Nf1 h6 11. Ng3 b5 12. Bb3
Ne7 $5 {[%mdl 4] A promising side line. C90: Closed Ruy Lopez with 7...d6:
Early deviations.} 13. a4 Rb8 14. axb5 axb5 {The position is equal.} 15. d4 Ng6
16. Ra7 {[#]} Rb7 $146 ({Predecessor:} 16... Bd7 17. h3 b4 18. Be3 bxc3 19.
bxc3 Qc8 20. Qc2 c6 21. Qa2 Be6 22. Bxe6 Qxe6 23. Qxe6 Rxe6 24. Rc7 exd4 25.
Nxd4 Re7 26. Rxc6 Nxe4 27. Nxe4 {1/2-1/2 (27) Jakovenko,D (2721)-Aronian,L 
(2801) Palma de Mallorca 2017}) 17. Ra6 c5 18. Bc2 Rb8 19. Ra1 Bg4 20. h3 Bxf3
21. Qxf3 exd4 22. cxd4 cxd4 23. Qd1 d5 24. Qxd4 Rc8 25. Bb3 Bc5 26. Qd3 Ne5 27.
Qxb5 {[%mdl 8192] [#] White does not recover from this.} ({White should try} 
27. Qf1 $15) 27... Bxf2+ $1 $19 {[%mdl 512]} 28. Kxf2 Rb8 29. Qa6 Rxb3 {
Black is clearly winning.} 30. Ra3 Qb8 {Strongly threatening ...Neg4+!} 31. Qe2
{[#]} (31. Nf5 $142 Nd3+ 32. Qxd3 Rxd3 33. Rxd3) 31... Rxg3 $1 {[%mdl 512]} 32.
Kxg3 (32. Kg1 Nxe4) 32... Nxe4+ {Weighted Error Value: White=0.87/Black=0.15}
0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.15"]
[White "Sasikiran, Krishnan"]
[Black "Korobov, Anton"]
[Result "0-1"]
[ECO "B80"]
[WhiteElo "2640"]
[BlackElo "2690"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,94,22,32,27,40,21,31,35,62,61,50,57,64,59,35,26,25,12,23,10,41,0,0,0,
0,-57,-40,-64,-66,-62,-73,-108,-88,-92,-74,-101,-98,-86,-71,-88,-74,-152,-154,
-261,-256,-259,-254,-260,-256,-594,-587,-562,-599,-587,-587,-578,-570,-710,
-635,-657,-645,-703,-672,-786,-775,-760,-725,-942,-927,-902,-852,-1127,-1139,
-1716,-1634,-1413,-1338,-12820,-1047,-12833,-12834,-12836,-12835,-12843,-12843]
} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. a3 {B80:
Sicilian Scheveningen: 6 g3 and 6 Be3, including English Attack.} b5 8. g4 Bb7
9. Bg2 {White is slightly better.} Be7 10. g5 Nfd7 11. f4 Nc6 12. Nxc6 Bxc6 13.
h4 O-O {[#]} 14. O-O $146 ({Predecessor:} 14. h5 a5 15. Qd2 Qc7 16. h6 g6 17.
O-O Rfb8 18. b3 Bf8 19. Nd1 Rc8 20. Nf2 {1/2-1/2 (46) Ilyin,P (2415)-Bester,B 
(2422) ICCF email 2018}) 14... Qb8 15. f5 Re8 16. fxe6 (16. f6 $5 Bf8 17. Qg4
$11) 16... fxe6 17. Qg4 Bd8 18. Bh3 (18. Bf4 $11) 18... Bb6 $15 19. Bxb6 Qxb6+
20. Kh2 Ne5 21. Qg3 b4 22. axb4 Qxb4 23. Rab1 Bd7 ({Don't blunder} 23... Bxe4
$2 24. Qf4 $18) 24. h5 Rf8 25. h6 g6 $1 26. Rbd1 ({White should play} 26. Qe3)
26... a5 $17 ({And not} 26... Qxb2 27. Rxd6 Qxc2+ 28. Kh1 $14) 27. b3 {[#]} (
27. Kh1 $17 {was called for.}) 27... Rac8 $1 $19 {[%cal Rc8c3]} ({Worse is} 
27... Rfc8 28. Qf2 $11) 28. Rxf8+ Rxf8 29. Bg2 {[#]} Rf2 {[%cal Rf2c2][%mdl
512]} 30. Rf1 $2 (30. Kh1 {is tougher.} Qc5 31. Rc1) 30... Nf3+ {Black is
clearly winning.} 31. Qxf3 Rxf3 32. Rxf3 Qc5 33. Rg3 Bc6 34. Ne2 Qe5 35. Nc3
Kf7 36. Kh3 Ke7 37. Kg4 Qd4 38. Kh3 Qd2 39. Nb1 Qc1 40. Nc3 Qxc2 41. Kh2 Qxb3
42. Nd5+ Bxd5 43. exd5 Qb4 44. dxe6 Kxe6 (44... a4 $142 45. Kh3 Kxe6 46. Re3+
Kf5) 45. Re3+ Kf5 46. Re7 Kxg5 47. Rxh7 a4 {Weighted Error Value: White=0.80/
Black=0.22} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.16"]
[White "Alekseenko, Kirill"]
[Black "Yilmaz, Mustafa"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2710"]
[BlackElo "2626"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,79,3,13,13,5,3,9,1,0,8,20,-61,-37,-41,-42,-40,-1,-44,-43,-80,-87,-97,
-66,-163,-161,-165,-161,-151,-162,-197,-193,-244,-248,-297,-257,-259,-254,-257,
-259,-252,-247,-253,-248,-252,-247,-368,-374,-429,-416,-403,-383,-406,-267,
-233,-52,-38,297,304,496,494,1978,1897,1590,1256,1168,1112,2629,2478,2372,2191,
1243,809]} 1. e4 c5 2. h3 d6 3. Bb5+ ({Predecessor:} 3. Nf3 g6 4. b3 Bg7 5. c3
Nf6 6. Bc4 Nxe4 7. O-O e6 8. Qe2 Nf6 9. d4 cxd4 10. cxd4 O-O 11. Bg5 {0-1 (67)
Arsova,M-Guleryuz,Z (1199) Tornelo INT 2020}) 3... Nd7 4. c4 Ngf6 5. Nc3 a6 6.
Ba4 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} e6 7. Nge2 Be7 8. O-O {The position is
equal.} O-O 9. d3 d5 10. Ng3 (10. cxd5 $11 exd5 11. Bxd7 (11. exd5 Nb6 $11) (
11. Nxd5 Nxd5 12. exd5 Nb6 $11) 11... Qxd7 12. Bg5) 10... d4 11. Nce2 b5 12.
cxb5 Nb6 13. Bc2 (13. b4 $5) 13... axb5 14. Bd2 Bb7 15. f4 Nfd7 16. f5 ({
White should play} 16. b4 $15) 16... e5 $1 $19 17. Nh5 c4 18. Neg3 {
Threatening Qg4!} f6 19. Qg4 {[%csl Gh5][%cal Rg4g7]} Rf7 20. Rf3 (20. Nh1 $142
) 20... Kh8 21. Nh1 Nc5 22. Nf2 cxd3 23. Nxd3 Nc4 ({Much less strong is} 23...
Nxe4 24. Nxe5 fxe5 25. Bxe4 $17) 24. Nxc5 Bxc5 25. Bb3 Rd7 26. Rd1 Nxb2 27. Rg3
(27. Rc1 {was worth a try.} Nc4 28. Rd3) 27... Nxd1 28. Qxd1 d3+ 29. Kh2 Bf2
30. Rg4 Qe8 31. Qf3 Qxh5 $2 (31... Bb6 $19 32. Ng3 Ba5) 32. Qxf2 $15 {next Rh4
is good for White.} Qe8 $2 {[%mdl 8192] [#] This costs Black the game.} (32...
Rd4 $15 {keeps the upper hand.} 33. Rh4 Qxh4 $3 {[%mdl 512]} 34. Qxh4 Rxe4) 33.
Qh4 $1 $18 {[%cal Rh4h7] Intending Qxh7+! and mate.} Rf7 $2 {[#]} (33... Bd5
34. exd5 (34. Bxd5 Rxd5 {[%mdl 64] Remove Defender} 35. exd5 Rxa2 $18) 34...
Ra3) 34. Qh5 $1 {White is clearly winning.} Kg8 (34... Bd5 $142) 35. Rh4 h6 36.
Bxh6 Kf8 37. Bd2 {Threatening mate with Bb4+.} Ra4 38. Bxa4 {White threatens
Bb4+ and mate.} bxa4 39. Bb4+ Re7 40. Qd1 {Weighted Error Value: White=0.22/
Black=0.47} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.17"]
[White "Volokitin, Andrei"]
[Black "Maghsoodloo, Parham"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2652"]
[BlackElo "2701"]
[Annotator "RC"]
[PlyCount "121"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:02]} c5 {[%emt 0:00:04]} 2. Nf3 {[%emt 0:00:05]} Nc6 {
[%emt 0:00:04]} 3. Bb5 {[%emt 0:00:18]} g6 {[%emt 0:00:06]} 4. Bxc6 {[%emt 0:
00:10]} bxc6 {[%emt 0:00:04]} 5. d4 {[%emt 0:00:05]} d6 {[%emt 0:00:04]} 6.
dxc5 {[%emt 0:15:12]} Qa5+ {[%emt 0:00:06]} 7. Nbd2 {[%emt 0:01:23]} Qxc5 {
[%emt 0:00:06]} 8. O-O {[%emt 0:00:06]} Nf6 {[%emt 0:05:21]} 9. a3 {[%emt 0:05:
39]} Bg7 {[%emt 0:11:51]} 10. b4 {[%emt 0:00:30]} Qh5 {[%emt 0:00:37]} 11. Bb2
{[%emt 0:00:09]} O-O {[%emt 0:00:08]} 12. Re1 {[%emt 0:25:55]} a5 {[%emt 0:06:
40]} 13. c4 {[%emt 0:03:15]} Rb8 {[%emt 0:17:41]} 14. Qb3 {[%emt 0:05:17]} axb4
{[%emt 0:25:57]} 15. axb4 {[%emt 0:00:16]} c5 {[%emt 0:00:13]} 16. b5 {[%emt 0:
01:05]} Ne8 {[%emt 0:04:59]} 17. e5 {[%emt 0:29:14]} Bb7 {[%emt 0:00:11]} 18.
Ne4 {[%emt 0:00:39]} Qf5 {[%emt 0:09:04]} 19. Ng3 {[%emt 0:07:10]} Qf4 {
[%emt 0:04:58]} 20. Ne2 {[%emt 0:02:57]} Qf5 {[%emt 0:04:58]} 21. Ng3 {[%emt 0:
00:03]} Qf4 {[%emt 0:00:04]} 22. Re3 {[%emt 0:00:19]} d5 {[%emt 0:06:25]} 23.
cxd5 {[%emt 0:00:26]} Qb4 {[%emt 0:00:18]} 24. Rd1 {[%emt 0:10:25]} Nc7 {
[%emt 0:04:29]} 25. d6 {[%emt 0:00:04]} Qxb3 {[%emt 0:01:47]} 26. Rxb3 {
[%emt 0:00:03]} Rfd8 {[%emt 0:00:04]} 27. Rd2 {[%emt 0:02:35]} exd6 {[%emt 0:
02:13]} 28. exd6 {[%emt 0:00:01]} Ne6 {[%emt 0:00:01]} 29. Bxg7 {[%emt 0:00:02]
} Kxg7 {[%emt 0:00:09]} 30. Ne2 {[%emt 0:01:31]} f6 {[%emt 0:03:09]} 31. h3 {
[%emt 0:00:23]} Kf7 {[%emt 0:00:57]} 32. b6 {[%emt 0:00:30]} Ke8 {[%emt 0:00:
48]} 33. Re3 {[%emt 0:00:37]} Kd7 {[%emt 0:00:29]} 34. Nc3 {[%emt 0:00:01]} Bc6
{[%emt 0:00:39]} 35. Rb2 {[%emt 0:00:55]} Nd4 {[%emt 0:02:37]} 36. Nd2 {
[%emt 0:00:09]} Kxd6 {[%emt 0:00:07]} 37. Nc4+ {[%emt 0:00:50]} Kd7 {[%emt 0:
00:04]} 38. Ra2 {[%emt 0:00:33]} Ra8 {[%emt 0:00:51]} 39. Ra7+ {[%emt 0:00:10]}
Rxa7 {[%emt 0:00:12]} 40. bxa7 {[%emt 0:00:02]} Ba8 {[%emt 0:01:20]} 41. Ne4 {
[%emt 0:34:27]} Kc6 {[%emt 0:01:38]} 42. Nxf6 {[%emt 0:00:33]} Kb5 {[%emt 0:00:
17]} 43. Ne5 {[%emt 0:06:33]} c4 {[%emt 0:02:27]} 44. Ne4 {[%emt 0:00:36]} Kb4
{[%emt 0:02:15]} 45. Nc3 {[%emt 0:00:07]} Rc8 {[%emt 0:10:14]} 46. Na2+ {
[%emt 0:00:10]} Kb5 {[%emt 0:01:11]} 47. Nxc4 {[%emt 0:01:05]} Rxc4 {[%emt 0:
03:54]} 48. Re8 {[%emt 0:00:04]} Bc6 {[%emt 0:08:13]} 49. a8=Q {[%emt 0:03:53]}
Bxa8 {[%emt 0:00:16]} 50. Rxa8 {[%emt 0:00:16]} Nc6 {[%emt 0:04:27]} 51. Ra3 {
[%emt 0:02:25]} Rc2 {[%emt 0:00:06]} 52. Rb3+ {[%emt 0:00:34]} Kc4 {[%emt 0:00:
05]} 53. Rb6 {[%emt 0:00:06]} Nd4 {[%emt 0:05:34]} 54. Nb4 {[%emt 0:00:10]} Rd2
{[%emt 0:01:26]} 55. Na6 {[%emt 0:00:33]} Rd1+ {[%emt 0:00:59]} 56. Kh2 {
[%emt 0:00:01]} Rd2 {[%emt 0:00:02]} 57. Kg1 {[%emt 0:01:27]} Rd1+ {[%emt 0:00:
04]} 58. Kh2 {[%emt 0:00:03]} Rd2 {[%emt 0:00:02]} 59. Rb7 {[%emt 0:02:29]}
Rxf2 {[%emt 0:01:25]} 60. Rxh7 {[%emt 0:00:23]} Ra2 {[%emt 0:01:20]} 61. Rc7+ {
[%emt 0:20:20]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.18"]
[White "Swiercz, Dariusz"]
[Black "Eljanov, Pavel"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2647"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,91,22,18,18,19,22,35,22,31,9,10,13,19,15,23,10,27,-11,-26,-14,0,0,-14,
-3,-18,-32,1,-33,0,0,0,0,39,37,37,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,
37,32,48,45,73,37,41,37,32,31,31,31,31,31,31,31,32,32,31,0,32,0,32,32,32,31,30,
30,29,10,37,29,30,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6.
Nbd2 {C65: Ruy Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5.}
Be6 7. O-O Qd6 {7...Bd6 is a critical line.} 8. b3 {White is slightly better.}
a5 {[%cal Ba7a5,Ba5a4][%mdl 32]} 9. a3 O-O 10. Bb2 {aiming for d4!} Nd7 11. Ng5
f6 12. Nxe6 Qxe6 13. Kh1 {[#]} a4 $146 ({Predecessor:} 13... Rfd8 14. Qh5 Qf7
15. Qg4 Nf8 16. f4 exf4 17. Rxf4 Ng6 18. Rf5 Qe6 {0-1 (45) Kamsky,G (2735)
-Ivanchuk,V (2735) Monte Carlo 1996}) 14. b4 Be7 15. f4 exf4 16. Rxf4 b5 17.
Nf3 Bd6 18. Rh4 Qe8 19. Nd4 $1 Be5 20. Qc1 Bxd4 21. Bxd4 Rd8 22. Qb2 Rf7 23.
Qc3 Ne5 24. Rf1 Qd7 25. Bc5 Re8 26. Rhf4 Ng6 27. R4f3 Re5 28. Bf2 Nf8 29. Kg1
Ne6 30. Be3 Qd6 31. Rf5 h6 32. h3 Rxf5 33. Rxf5 Qg3 34. Bf2 Qd6 35. Kh1 Qd7 36.
Be3 Qd6 37. Qa1 Qg3 38. Bf2 Qd6 39. Be3 Qg3 40. Bf2 Qd6 41. Bg1 Qd7 42. Qc3 Qd6
43. Ba7 Qd7 44. Bc5 Kh7 45. Bg1 Kg8 46. Be3 {Weighted Error Value: White=0.07/
Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.19"]
[White "Saric, Ivan"]
[Black "Van Foreest, Jorden"]
[Result "1/2-1/2"]
[ECO "C80"]
[WhiteElo "2644"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,79,45,20,38,39,34,17,16,11,16,6,33,15,29,16,21,19,19,9,8,8,9,8,10,10,
18,0,0,0,0,0,0,0,0,0,0,-6,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2.
Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2
Nc5 10. c3 d4 11. Bxe6 Nxe6 12. cxd4 Ncxd4 13. a4 {next Nxd4 is good for White.
} Nc6 {13...Bb4 is the modern continuation. C80: Open Ruy Lopez: Sidelines and
9 Nbd2.} 14. Qe2 {[#]} Be7 $146 ({Predecessor:} 14... bxa4 15. Rxa4 Nb4 16. Qc4
Rb8 17. Ne4 Be7 18. Neg5 Nxg5 19. Bxg5 O-O 20. e6 f6 21. Bf4 {1/2-1/2 (39)
Juras,Z (2388)-Krueger,M (2284) ICCF email 2018}) 15. Ne4 O-O 16. Rd1 Qc8 17.
h4 Qb7 18. Bg5 bxa4 19. Rxa4 (19. Bxe7 {looks sharper.} Nxe7 20. Rxa4 Qb5 21.
Rc4 h6 22. Qc2) 19... Qb5 {The position is equal.} 20. Qxb5 axb5 21. Rxa8 Rxa8
22. Bxe7 Nxe7 23. Neg5 Rd8 24. Rc1 Nxg5 25. Nxg5 $11 {[%mdl 4096] Endgame
KRN-KRN} h6 26. Nf3 c6 27. g3 Kf8 28. Ra1 Nf5 29. Kg2 Ke7 30. Ra6 Nd4 31. h5
Ke6 32. Nxd4+ Rxd4 33. Rxc6+ Kxe5 {KR-KR} 34. Rc3 Rd2 35. Rb3 Rd5 36. Rb4 Ke6
37. Re4+ Kf6 38. g4 g6 39. hxg6 fxg6 40. Rb4 {Weighted Error Value: White=0.02/
Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.20"]
[White "Grandelius, Nils"]
[Black "Bluebaum, Matthias"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2662"]
[BlackElo "2640"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,60,0,31,35,41,42,59,30,37,26,28,30,48,0,12,0,0,10,97,100,97,101,303,
283,275,284,291,290,323,321,290,276,294,171,283,261,635,626,797,793,1532,1370,
29989,29990,29995,29996,29996,29997,29999]} 1. e4 e6 2. d4 d5 3. e5 c5 4. c3
Nc6 5. Nf3 Bd7 6. Be2 Nge7 7. O-O Nf5 8. dxc5 $1 {[%mdl 4] now scores much
better than the old 8.Bd3. C02: French: Advance Variation.} a5 9. Bd3 Bxc5 {[#]
} 10. a4 $146 {White is slightly better.} (10. Bxf5 $5 exf5 11. Qxd5 $16) ({
Predecessor:} 10. Nbd2 a4 11. b4 axb3 12. Nxb3 Bb6 13. Re1 O-O 14. Bg5 Qc7 15.
Qd2 Ra4 16. h3 {1-0 (67) Jones,G (2684)-Van Foreest,J (2691) Malmo 2021}) 10...
h6 11. Nbd2 Ba7 12. Nb3 O-O 13. Bc2 Nh4 14. Nxh4 Qxh4 15. Qd3 $40 {[%csl Gc2]
[%cal Rd3h7][%mdl 128] White attacks.} f5 (15... g6 $11) 16. exf6 $1 $16 Rxf6
17. Be3 Ne5 $2 {Loses the game.} (17... Bxe3 $16 18. fxe3 (18. Qh7+ Kf7 $16)
18... Ne5 19. Qh7+ Kf7) 18. Qh7+ $18 Kf7 19. Bxa7 Rxa7 20. Rae1 Ng4 {[%csl Gg4]
[%cal Rh4h2]} 21. h3 Nxf2 {[#] With the idea ...Qg3.} 22. Bg6+ $1 {[%mdl 512]}
Ke7 {Strongly threatening ...Nxh3+!} ({But not} 22... Rxg6 $2 23. Rxf2+ Rf6 24.
Rxf6+ Qxf6 25. Rf1 $18) 23. Bf5 (23. Re3 $142) 23... Kd6 {[#]} (23... Kd8 $142
24. Nd4 Rxf5 25. Nxf5 Nxh3+ 26. gxh3 exf5) 24. Nd4 $1 Ne4 $2 (24... Ra8 25.
Bxe6 (25. Rxf2 Raf8 $18) 25... Re8) 25. Bxe4 Rxf1+ 26. Rxf1 Qxe4 27. Qg8 {
Intending Qf8+ and mate.} Kc5 28. Qf8+ {White mates.} Kc4 29. b3+ Kd3 30. Rd1+
Ke3 31. Qf2# {Weighted Error Value: White=0.11/Black=0.78} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.21"]
[White "Ponkratov, Pavel"]
[Black "Ter-Sahakyan, Samvel"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2659"]
[BlackElo "2607"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,61,10,21,4,20,16,29,0,0,0,1,0,0,0,0,0,0,-22,-6,-25,-8,-22,-20,-43,-41,
-25,-45,-35,-35,-52,-50,-99,-30,-20,-23,-44,-43,-44,-21,-48,-25,-20,0,-61,-54,
-77,-71,-68,-37,-51,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3
a6 6. Qd3 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3
e5.} Nbd7 7. Be2 g6 8. h4 {White has an edge.} Nc5 9. Qe3 h5 {[#]} 10. Nb3 $146
({Predecessor:} 10. f3 e5 11. Nb3 Be6 12. Nxc5 dxc5 13. Qg5 Nd7 14. Be3 Qb6 15.
O-O-O Bh6 16. Qxh6 Rxh6 17. Bxh6 {0-1 (73) Najer,E (2670)-Sarana,A (2618)
Moscow 2018}) 10... Bh6 11. Qd4 Ne6 12. Qd1 Bg7 13. Be3 Bd7 14. a4 Bc6 15. f3
d5 16. e5 Ng8 17. f4 Nh6 {Strongly threatening ...Nf5.} 18. Nd4 Nxd4 19. Bxd4
Nf5 20. Qd3 Nxd4 ({Black should try} 20... e6 $17) 21. Qxd4 $11 e6 22. Bd3 Bf8
23. a5 Rc8 24. Ne2 Qd7 25. c3 Be7 26. Qf2 (26. Kf2 $11) 26... Bb5 $15 27. Bxb5
Qxb5 28. Nd4 Qc4 29. Qe2 Kd7 (29... Qc7 $15) 30. Qxc4 $11 Rxc4 31. Kd2 {
Weighted Error Value: White=0.13/Black=0.09} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.22"]
[White "Antipov, Mikhail Al."]
[Black "Najer, Evgeniy"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2619"]
[BlackElo "2654"]
[Annotator "RC"]
[PlyCount "126"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:03]} c5 {[%emt 0:02:22]} 2. Nf3 {[%emt 0:00:06]} d6 {[%emt 0:
00:07]} 3. d4 {[%emt 0:00:04]} cxd4 {[%emt 0:00:05]} 4. Nxd4 {[%emt 0:00:03]}
Nf6 {[%emt 0:00:06]} 5. Nc3 {[%emt 0:00:05]} a6 {[%emt 0:00:04]} 6. Be3 {
[%emt 0:00:05]} e5 {[%emt 0:00:20]} 7. Nb3 {[%emt 0:00:05]} Be6 {[%emt 0:00:04]
} 8. f3 {[%emt 0:00:06]} h5 {[%emt 0:00:11]} 9. Nd5 {[%emt 0:00:26]} Bxd5 {
[%emt 0:00:08]} 10. exd5 {[%emt 0:00:04]} g6 {[%emt 0:00:40]} 11. Qd2 {[%emt 0:
00:21]} Nbd7 {[%emt 0:00:40]} 12. O-O-O {[%emt 0:00:14]} Bg7 {[%emt 0:00:27]}
13. Kb1 {[%emt 0:13:47]} Qc7 {[%emt 0:00:17]} 14. h3 {[%emt 0:11:27]} Rc8 {
[%emt 0:01:29]} 15. c4 {[%emt 0:14:54]} b6 {[%emt 0:06:38]} 16. g3 {[%emt 0:00:
57]} Nc5 {[%emt 0:01:45]} 17. Be2 {[%emt 0:09:40]} Nxb3 {[%emt 0:19:44]} 18.
axb3 {[%emt 0:00:09]} a5 {[%emt 0:00:04]} 19. g4 {[%emt 0:00:32]} Kf8 {[%emt 0:
02:46]} 20. g5 {[%emt 0:07:37]} Nd7 {[%emt 0:00:32]} 21. Rhf1 {[%emt 0:00:08]}
Re8 {[%emt 0:05:18]} 22. f4 {[%emt 0:16:58]} exf4 {[%emt 0:00:22]} 23. Rxf4 {
[%emt 0:00:05]} Be5 {[%emt 0:02:58]} 24. Rf3 {[%emt 0:00:06]} Kg7 {[%emt 0:02:
48]} 25. Rdf1 {[%emt 0:00:05]} Re7 {[%emt 0:06:06]} 26. Bd3 {[%emt 0:00:38]}
Rhe8 {[%emt 0:18:14]} 27. Qc2 {[%emt 0:02:33]} Rb8 {[%emt 0:09:15]} 28. h4 {
[%emt 0:09:12]} Qd8 {[%emt 0:02:22]} 29. Bd2 {[%emt 0:06:21]} Qe8 {[%emt 0:02:
58]} 30. Bc3 {[%emt 0:00:33]} Kg8 {[%emt 0:01:07]} 31. Ka2 {[%emt 0:07:14]}
Bxc3 {[%emt 0:01:39]} 32. Qxc3 {[%emt 0:00:39]} Ne5 {[%emt 0:00:55]} 33. Rf6 {
[%emt 0:00:11]} Qd7 {[%emt 0:00:51]} 34. Re1 {[%emt 0:04:17]} Qc7 {[%emt 0:04:
58]} 35. Rxe5 {[%emt 0:05:42]} Rxe5 {[%emt 0:00:42]} 36. Bxg6 {[%emt 0:00:03]}
fxg6 {[%emt 0:01:58]} 37. Rxg6+ {[%emt 0:00:01]} Kf7 {[%emt 0:03:49]} 38. Rf6+
{[%emt 0:00:13]} Kg8 {[%emt 0:09:04]} 39. Rg6+ {[%emt 0:00:04]} Kf7 {[%emt 0:
00:47]} 40. Rh6 {[%emt 0:04:10]} Rg8 {[%emt 0:03:15]} 41. Rh7+ {[%emt 0:08:13]}
Rg7 {[%emt 0:00:16]} 42. Rh8 {[%emt 0:00:04]} Rf5 {[%emt 0:29:20]} 43. Qd3 {
[%emt 0:05:21]} Qd7 {[%emt 0:00:04]} 44. Qe2 {[%emt 0:00:06]} a4 {[%emt 0:00:
52]} 45. Qxh5+ {[%emt 0:22:56]} Ke7 {[%emt 0:00:04]} 46. Qh6 {[%emt 0:01:24]}
axb3+ {[%emt 0:01:19]} 47. Kxb3 {[%emt 0:01:34]} Rgf7 {[%emt 0:12:42]} 48. g6 {
[%emt 0:00:11]} b5 {[%emt 0:10:59]} 49. gxf7 {[%emt 0:01:25]} bxc4+ {[%emt 0:
00:02]} 50. Kc3 {[%emt 0:00:11]} Rf3+ {[%emt 0:00:02]} 51. Kd2 {[%emt 0:00:09]}
Rf2+ {[%emt 0:01:15]} 52. Ke1 {[%emt 0:00:07]} Rf1+ {[%emt 0:00:22]} 53. Kxf1 {
[%emt 0:00:15]} Qf5+ {[%emt 0:00:58]} 54. Kg1 {[%emt 0:00:48]} Qg4+ {[%emt 0:
00:30]} 55. Kf2 {[%emt 0:00:46]} Qf5+ {[%emt 0:00:03]} 56. Kg3 {[%emt 0:00:28]}
Qd3+ {[%emt 0:00:01]} 57. Kg4 {[%emt 0:00:14]} Qd1+ {[%emt 0:01:14]} 58. Kg5 {
[%emt 0:00:42]} Qxd5+ {[%emt 0:00:14]} 59. Kf4 {[%emt 0:00:36]} Qd2+ {[%emt 0:
00:26]} 60. Kf3 {[%emt 0:00:14]} Qd1+ {[%emt 0:00:11]} 61. Kf2 {[%emt 0:23:00]}
Qc2+ {[%emt 0:15:39]} 62. Kg3 {[%emt 0:00:10]} Qd3+ {[%emt 0:00:14]} 63. Kg4 {
[%emt 0:00:05]} Qd1+ {[%emt 0:01:25]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.23"]
[White "Henriquez Villagra, Cristobal"]
[Black "Navara, David"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2608"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,92,28,36,10,15,14,9,16,17,17,20,0,30,30,27,31,20,21,63,0,0,0,0,0,0,0,
0,0,4,0,0,0,0,0,10,8,10,7,14,18,8,12,39,12,27,36,29,33,43,39,46,45,47,29,38,17,
30,21,21,24,37,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2.
Bg5 d5 3. Nd2 c5 4. dxc5 Na6 5. e4 Nxc5 6. e5 {[#] D00: 1 d4 d5: Unusual lines.
} Nfe4 $146 ({Predecessor:} 6... Nfd7 7. Ngf3 Qc7 8. Bf4 b6 9. c4 Bb7 10. b4
Ne6 11. Bg3 g6 12. Rc1 d4 {1-0 (38) Stefanova,A (2535)-Stiri,A (2163) Rethymno
2009}) 7. Nxe4 Nxe4 8. Be3 {Hoping for f3.} e6 $1 9. Nf3 Bd7 10. Bd3 Qa5+ 11.
c3 Bb5 12. O-O Bxd3 13. Qxd3 Be7 14. Rfd1 (14. c4 $14) 14... Rc8 $11 15. a4 a6
16. Bd4 O-O 17. Qe3 {[#] aiming for Bb6.} Qc7 18. a5 Qc4 19. Nd2 Nxd2 20. Rxd2
Bc5 21. Bxc5 Qxc5 22. Rd4 b6 23. axb6 Qxb6 24. Rb4 Qxe3 25. fxe3 {[%mdl 4096]
Endgame KRR-KRR} Rc6 26. Kf2 f6 27. exf6 e5 28. f7+ Kxf7 29. Ke2 Ke6 30. Ra5
Rf7 31. h3 e4 32. Rb8 Rd7 33. Ra1 Rdd6 34. Ra8 Ke5 35. Rf1 Rf6 {The position
is equal.} 36. Re8+ (36. Rd1 {is interesting.} h5 37. Ra7 Rg6 38. Kf2 Rb6 39.
b4) 36... Rce6 37. Rxf6 gxf6 {KR-KR} 38. Rc8 f5 39. Rc5 Rb6 40. b4 Rb5 41. Rxb5
axb5 {KP-KP} 42. g3 Kf6 43. Kf2 Kg5 44. Kf1 h6 45. Kf2 h5 46. h4+ Kf6 {
Weighted Error Value: White=0.06/Black=0.03} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.24"]
[White "Brkic, Ante"]
[Black "Svidler, Peter"]
[Result "1/2-1/2"]
[ECO "B94"]
[WhiteElo "2621"]
[BlackElo "2694"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,80,11,17,37,35,33,0,0,6,24,0,61,65,64,61,44,40,29,14,33,41,244,73,
106,65,61,52,59,49,61,51,59,59,58,20,38,10,19,10,16,12,19,21,22,19,19,18,23,0,
0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. e4 c5 2. Nf3 d6 3. d4
cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 h6 8. Bh4 Qb6 {B94: Sicilian
Najdorf: 6 Bg5 Nbd7.} 9. Bb3 e6 10. f4 Be7 {[#]} 11. f5 $146 ({Predecessor:} 
11. Bf2 Nc5 12. Qe2 Qc7 13. e5 dxe5 14. fxe5 Nfd7 15. Bg3 O-O 16. O-O-O b5 17.
Kb1 Qb7 18. Qh5 Nb6 19. Bf4 {1/2-1/2 (19) Shomoev,A (2556)-Iskusnyh,S (2482)
Russia 2007}) 11... Nc5 12. Qf3 Ncxe4 13. Nxe4 $14 Qxd4 {[%mdl 64] Double
Attack} 14. Bxf6 Bxf6 15. Rd1 Qe5 16. O-O {Hoping for fxe6.} O-O 17. Nxf6+ (17.
Rxd6 Be7 $17) 17... gxf6 $2 {[#]} ({Black should play} 17... Qxf6 $14 18. fxe6
(18. Rxd6 Qe5 $11) 18... Qxf3 19. exf7+ (19. gxf3 Bxe6 20. Bxe6 fxe6 $11) 19...
Qxf7 $3 {[%mdl 512]} 20. Rxf7 Rxf7) 18. Rfe1 $2 (18. Rd3 $1 $18 Re8 19. Qh3)
18... Qc5+ 19. Kh1 Qxf5 20. Qxf5 ({But not} 20. Rxd6 Qxf3 21. gxf3 b5 $15)
20... exf5 21. Rxd6 Kg7 22. Re7 {[%mdl 1024] White has compensation.} f4 23.
Kg1 b5 24. Kf2 Bg4 25. Rd4 (25. h3 $5 {[%cal Rh3g4]} Bh5 26. Rd4 $14) 25...
Rad8 26. Rxf4 Rd2+ 27. Kg3 Bh5 28. Rf2 Rfd8 29. Rxd2 Rxd2 $11 {[%mdl 4096]
Endgame KRB-KRB} 30. Ra7 Bg6 31. Rxa6 Be4 {The position is equal.} 32. Rb6
Rxg2+ 33. Kf4 $1 {[%cal Rf4e4]} f5 34. Rxb5 Rxh2 35. a4 h5 36. Bd5 Bxd5 37.
Rxd5 Rxc2 38. Rxf5 Rxb2 39. Rxh5 Rb4+ 40. Kf3 Rxa4 {Weighted Error Value:
White=0.16/Black=0.18} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.25"]
[White "Wojtaszek, Radoslaw"]
[Black "Erigaisi Arjun"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2691"]
[BlackElo "2634"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,67,33,25,31,10,37,17,21,16,20,12,14,11,7,13,16,14,33,23,25,26,25,-23,
-22,-19,29,7,52,50,45,50,74,68,68,67,83,82,70,70,70,70,70,70,70,70,72,72,74,67,
56,56,56,56,56,56,56,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6.
Nh4 Be4 7. f3 Bg6 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5.} 8. Bd2 Be7 9. Nxg6
hxg6 {The position is equal.} 10. Qb3 Qc7 11. cxd5 cxd5 12. O-O-O Nc6 {[%cal
Bb8c6,Bc6a5,Ba5c4][%mdl 32]} 13. Kb1 a6 14. Rc1 O-O 15. g4 Na5 16. Qd1 {
[#] Black must now prevent Nxd5!} Nc4 17. g5 Nh5 18. Bxc4 Qxc4 19. f4 Rac8 20.
Rg1 {[#]} Bb4 $146 ({Predecessor:} 20... Rc6 21. Qe2 f6 22. gxf6 Nxf6 23. Qxc4
Rxc4 24. Rxg6 Kf7 25. Rcg1 Rg8 26. Be1 Bf8 {1/2-1/2 (65) Velten,P (2507)
-Vazquez Igarza,R (2548) Brixen Bressanone 2019}) 21. Be1 Bxc3 22. Rxc3 Qb5 23.
Qd3 Qxd3+ 24. Rxd3 f6 25. Bb4 Rf7 26. h4 b6 27. Rc3 Rxc3 28. Bxc3 $14 {[%mdl
4096] Endgame KRB-KRN} Rc7 29. Kc2 Kf7 30. Kd3 Rc4 {White is slightly better.}
31. a3 Rc6 32. Ke2 Rc4 33. Kf3 Ke7 34. Ke2 {Weighted Error Value: White=0.05/
Black=0.07} ({White should play} 34. Rc1 $14) 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.26"]
[White "Moussard, Jules"]
[Black "Matlakov, Maxim"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2632"]
[BlackElo "2682"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,65,18,78,34,72,47,86,61,105,85,127,104,107,83,124,141,134,127,143,
135,200,120,122,96,99,97,111,74,74,75,104,77,122,125,152,109,114,132,121,106,
116,115,441,389,527,512,389,394]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5.
Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 Nbd7 10. g4 Nb6 (10... O-O $11)
11. g5 {is the legacy move (11.0-0-0). B90: Sicilian Najdorf: Unusual White
6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Nfd7 12. O-O-O Qc7 13. Kb1 {White is
better.} Rc8 14. h4 Nc4 15. Bxc4 Qxc4 16. f4 {f5 is the strong threat.} exf4
17. Bxf4 Ne5 18. Nd4 O-O 19. Nf5 Qc7 {[#]} (19... Rfe8 $16 {was necessary.})
20. Nxe7+ $146 (20. Nxd6 $6 Qxd6 21. Qxd6 Bxd6 $16) ({Predecessor:} 20. Qd4
Rfd8 21. Qf2 Bf8 22. Nd5 Bxd5 23. Rxd5 Qc4 24. Rhd1 Re8 25. R1d4 Qc7 26. Nxd6
Bxd6 27. Rxd6 {1-0 (41) Saric,I (2303)-Muhvic,D (2252) Rijeka 2001}) 20... Qxe7
21. Qxd6 Qxd6 22. Rxd6 Nc4 23. Rd3 f5 {And now ...fxe4 would win.} 24. e5 Rc5
25. Na4 Ra5 26. b3 Rc8 27. h5 (27. bxc4 Rxa4 28. Rd6 Bxc4 $17) 27... b5 {[#]}
28. g6 $1 bxa4 {[#]} 29. Rhd1 $1 {White wants to mate with Rd8+.} ({Don't do} 
29. bxc4 Bxc4 30. Rd6 Rd5 $14) 29... hxg6 (29... Na3+ $2 30. Kb2 $18) 30. hxg6
{Intending Rd8+ and mate.} Na3+ $2 {[%mdl 8192]} (30... Re8 $16) 31. Kb2 $18 {
Rd8+ would kill now.} Re8 {[#]} 32. Rd8 $1 {[%cal Rd8e8]} Kf8 33. Bg5 {
Weighted Error Value: White=0.15/Black=0.43} ({Don't go for} 33. Kxa3 $2 axb3+
34. Kb2 Rxa2+ 35. Kc1 Rxc2+ 36. Kb1 Rg2 $19) 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.27"]
[White "Cori, Jorge"]
[Black "Yakubboev, Nodirbek"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2655"]
[BlackElo "2621"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,91,29,0,32,29,19,26,19,28,26,12,0,-11,-9,-147,-139,-133,-154,-253,
-243,-295,-295,-197,-48,-52,-50,-64,0,0,38,4,91,79,90,90,78,78,96,78,149,47,33,
0,0,0,0,0,43,43,43,43,43,43,42,48,39,20,70,70,70,70,70,70,70,70,70,32,32,32]} 
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. d5 a5 8. Bg5 h6
9. Bh4 Na6 {[%cal Bb8a6,Ba6c5,Bc5a4,Ba4c3][%mdl 32]} 10. Nd2 Bd7 11. a3 Qe8 12.
b3 {[%cal Bb2b3,Bb3b4][%mdl 32]} Nc5 13. O-O g5 {E92: King's Indian: Classical:
6 Be2 e5: 7 dxe5, 7 Be3 and Petrosian System without 7...Nbd7.} 14. Bg3 {[#]}
h5 $146 ({Predecessor:} 14... Qc8 15. b4 Na6 16. Qb3 axb4 17. axb4 Ne8 18. f3
f5 19. Bf2 g4 20. c5 Kh8 21. c6 bxc6 22. dxc6 Bxc6 23. b5 Bxb5 24. Bxb5 c6 25.
Be2 {1-0 (25) Ramos Ferrandis,J (2067)-Palomo Ruiperez,B (1758) Quart de
Poblet 2014}) 15. f3 (15. Bxh5 $2 g4 $19) 15... h4 {White has an edge.} 16. Bf2
Nh5 17. b4 Na4 18. Qc2 Nf4 {aiming for ...Nxc3.} 19. Bd3 (19. Rfe1 $11) 19...
Nxc3 $17 20. Qxc3 f5 21. Rfe1 (21. Rae1 $17) 21... axb4 $19 22. axb4 Rxa1 23.
Rxa1 h3 (23... fxe4 $1 $19 24. Nxe4 g4 25. fxg4 (25. Bxh4 $2 gxf3 26. gxf3 Qh5
$19) 25... Bxg4 26. Bxh4 Be2) 24. g3 $15 Nxd3 25. Qxd3 Qg6 (25... g4 $15) 26.
Ra7 $11 g4 27. Rxb7 gxf3 (27... Bh6 $1 $11) 28. Rxc7 $16 fxe4 29. Qxe4 Bf5 {[#]
} 30. Qe1 ({But not} 30. Qxf3 $2 Bh6 $19) 30... Bh6 31. b5 {Threatens to win
with b6.} ({Avoid the trap} 31. Nxf3 $2 Bc2 $19) 31... Rf7 {[#]} (31... Bxd2
$142 32. Qxd2 Rc8) 32. Rxf7 ({White should try} 32. Rc6 $1 $16) 32... Bxd2 $14
33. Qxd2 (33. Rf6 $5 Qxf6 34. Qxd2 $14) 33... Kxf7 34. c5 dxc5 35. d6 {d7 is
the strong threat.} Be6 36. d7 Qb1+ 37. Be1 f2+ $1 38. Qxf2+ Ke7 39. Qxc5+ {
[%mdl 64] Double Attack} Kxd7 {[%cal Rb1e1]} 40. Qb4 Qd3 41. Qd2 $1 {[%cal
Rd2d3] White is slightly better.} Qd4+ 42. Qxd4+ exd4 43. Kf2 Bc4 44. b6 $1 Kc6
45. Ba5 Bd5 46. g4 {Weighted Error Value: White=0.26/Black=0.22} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.28"]
[White "Demchenko, Anton"]
[Black "Hovhannisyan, Robert"]
[Result "*"]
[ECO "C50"]
[WhiteElo "2651"]
[BlackElo "2622"]
[Annotator "RC"]
[PlyCount "56"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:03]} e5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:08]} Nc6 {
[%emt 0:00:04]} 3. Bc4 {[%emt 0:00:08]} Bc5 {[%emt 0:00:08]} 4. d3 {[%emt 0:00:
05]} Nf6 {[%emt 0:00:05]} 5. a4 {[%emt 0:00:16]} a5 {[%emt 0:01:53]} 6. Be3 {
[%emt 0:00:21]} Bxe3 {[%emt 0:12:46]} 7. fxe3 {[%emt 0:01:21]} O-O {[%emt 0:00:
09]} 8. Nc3 {[%emt 0:00:24]} d6 {[%emt 0:00:23]} 9. Qe2 {[%emt 0:00:19]} Be6 {
[%emt 0:03:34]} 10. O-O-O {[%emt 0:03:13]} Qe7 {[%emt 0:07:40]} 11. Kb1 {
[%emt 0:01:09]} Rad8 {[%emt 0:02:03]} 12. Bxe6 {[%emt 0:03:41]} Qxe6 {[%emt 0:
05:51]} 13. g4 {[%emt 0:00:55]} Nb4 {[%emt 0:07:18]} 14. g5 {[%emt 0:03:59]}
Nd7 {[%emt 0:00:59]} 15. d4 {[%emt 0:01:07]} c6 {[%emt 0:03:41]} 16. h4 {
[%emt 0:09:47]} d5 {[%emt 0:04:08]} 17. exd5 {[%emt 0:10:55]} cxd5 {[%emt 0:00:
19]} 18. dxe5 {[%emt 0:16:53]} Nxe5 {[%emt 0:01:06]} 19. Nxe5 {[%emt 0:09:11]}
Qxe5 {[%emt 0:00:13]} 20. Rd4 {[%emt 0:01:51]} Rfe8 {[%emt 0:11:09]} 21. Rhd1 {
[%emt 0:00:22]} Rc8 {[%emt 0:07:21]} 22. Qf2 {[%emt 0:04:05]} Rc4 {[%emt 0:05:
28]} 23. Rxc4 {[%emt 0:11:28]} dxc4 {[%emt 0:00:04]} 24. Rd4 {[%emt 0:00:04]}
Qe6 {[%emt 0:04:13]} 25. Re4 {[%emt 0:15:22]} Qc6 {[%emt 0:00:52]} 26. Rxe8+ {
[%emt 0:01:16]} Qxe8 {[%emt 0:00:04]} 27. Qf4 {[%emt 0:00:04]} h6 {[%emt 0:10:
51]} 28. Qxc4 {[%emt 0:10:33]} Qxe3 {[%emt 0:01:26]} *

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.29"]
[White "Donchenko, Alexander"]
[Black "Zvjaginsev, Vadim"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "2648"]
[BlackElo "2609"]
[Annotator "RC"]
[PlyCount "82"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:04]} c5 {[%emt 0:01:32]} 2. d5 {[%emt 0:00:20]} g6 {[%emt 0:
00:19]} 3. e4 {[%emt 0:01:03]} Bg7 {[%emt 0:00:22]} 4. c4 {[%emt 0:00:59]} d6 {
[%emt 0:00:18]} 5. Be2 {[%emt 0:01:28]} e6 {[%emt 0:01:06]} 6. Nf3 {[%emt 0:01:
06]} exd5 {[%emt 0:02:49]} 7. cxd5 {[%emt 0:01:09]} Bg4 {[%emt 0:01:08]} 8.
Nfd2 {[%emt 0:04:57]} Bxe2 {[%emt 0:01:26]} 9. Qxe2 {[%emt 0:00:10]} Ne7 {
[%emt 0:06:47]} 10. Nc3 {[%emt 0:06:08]} Nd7 {[%emt 0:06:15]} 11. h4 {[%emt 0:
12:42]} O-O {[%emt 0:01:33]} 12. h5 {[%emt 0:02:25]} Re8 {[%emt 0:02:57]} 13.
hxg6 {[%emt 0:01:48]} hxg6 {[%emt 0:01:05]} 14. Nc4 {[%emt 0:06:08]} Nf5 {
[%emt 0:04:12]} 15. Bf4 {[%emt 0:05:08]} Nb6 {[%emt 0:04:33]} 16. Nd2 {[%emt 0:
23:08]} Nd4 {[%emt 0:26:28]} 17. Qd3 {[%emt 0:10:05]} c4 {[%emt 0:04:12]} 18.
Qh3 {[%emt 0:00:10]} g5 {[%emt 0:04:40]} 19. Be3 {[%emt 0:02:06]} Nc2+ {
[%emt 0:00:26]} 20. Kd1 {[%emt 0:01:48]} Nxa1 {[%emt 0:00:13]} 21. Nf3 {
[%emt 0:00:25]} Nd7 {[%emt 0:02:23]} 22. Bxg5 {[%emt 0:12:17]} Qb6 {[%emt 0:05:
11]} 23. Qh7+ {[%emt 0:03:07]} Kf8 {[%emt 0:00:08]} 24. Bh6 {[%emt 0:00:04]}
Bxh6 {[%emt 0:00:08]} 25. Qxh6+ {[%emt 0:00:40]} Ke7 {[%emt 0:00:04]} 26. Qg5+
{[%emt 0:00:33]} f6 {[%emt 0:00:09]} 27. Rh7+ {[%emt 0:00:36]} Kd8 {[%emt 0:00:
04]} 28. Qg7 {[%emt 0:00:52]} Nf8 {[%emt 0:00:50]} 29. Qxf6+ {[%emt 0:02:22]}
Kc8 {[%emt 0:00:30]} 30. Rf7 {[%emt 0:01:05]} Nd7 {[%emt 0:02:30]} 31. Qg7 {
[%emt 0:05:39]} Rd8 {[%emt 0:00:35]} 32. Ne2 {[%emt 0:02:42]} a5 {[%emt 0:05:
09]} 33. Nf4 {[%emt 0:01:47]} Qxf2 {[%emt 0:02:19]} 34. Ne6 {[%emt 0:00:16]}
Nc2 {[%emt 0:01:15]} 35. Qc3 {[%emt 0:01:45]} Ne3+ {[%emt 0:00:19]} 36. Kc1 {
[%emt 0:00:02]} Rg8 {[%emt 0:00:50]} 37. b3 {[%emt 0:01:12]} Ne5 {[%emt 0:04:
11]} 38. Nxe5 {[%emt 0:00:41]} Qg1+ {[%emt 0:00:14]} 39. Kb2 {[%emt 0:00:05]}
Nd1+ {[%emt 0:00:25]} 40. Ka3 {[%emt 0:00:42]} Nxc3 {[%emt 0:00:15]} 41. Rc7+ {
[%emt 0:50:44]} Kb8 {[%emt 0:50:04]} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.30"]
[White "Abdusattorov, Nodirbek"]
[Black "Sindarov, Javokhir"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2646"]
[BlackElo "2587"]
[Annotator "RC"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:21]} Nf6 {[%emt 0:00:51]} 2. c4 {[%emt 0:00:13]} g6 {[%emt 0:
00:12]} 3. Nc3 {[%emt 0:00:09]} d5 {[%emt 0:00:10]} 4. cxd5 {[%emt 0:01:02]}
Nxd5 {[%emt 0:00:10]} 5. e4 {[%emt 0:00:15]} Nxc3 {[%emt 0:00:06]} 6. bxc3 {
[%emt 0:00:08]} Bg7 {[%emt 0:00:05]} 7. Nf3 {[%emt 0:00:39]} c5 {[%emt 0:00:31]
} 8. Be3 {[%emt 0:00:10]} Qa5 {[%emt 0:00:17]} 9. Qd2 {[%emt 0:00:30]} Nc6 {
[%emt 0:00:05]} 10. Rb1 {[%emt 0:00:48]} a6 {[%emt 0:00:22]} 11. Rc1 {[%emt 0:
00:19]} cxd4 {[%emt 0:01:08]} 12. cxd4 {[%emt 0:00:11]} Qxd2+ {[%emt 0:00:12]}
13. Kxd2 {[%emt 0:00:13]} e6 {[%emt 0:02:58]} 14. h4 {[%emt 0:01:47]} O-O {
[%emt 0:57:50]} 15. Bd3 {[%emt 0:01:29]} Bd7 {[%emt 0:05:55]} 16. h5 {[%emt 0:
02:00]} Rfc8 {[%emt 0:00:16]} 17. h6 {[%emt 0:03:19]} Bf8 {[%emt 0:00:36]} 18.
Bg5 {[%emt 0:14:50]} b5 {[%emt 0:15:40]} 19. Rc2 {[%emt 0:09:29]} f5 {[%emt 0:
03:43]} 20. Ke3 {[%emt 0:19:54]} Nb4 {[%emt 0:07:27]} 21. Rxc8 {[%emt 0:00:15]}
Rxc8 {[%emt 0:00:01]} 22. Bb1 {[%emt 0:06:24]} Nc2+ {[%emt 0:02:51]} 23. Kd2 {
[%emt 0:00:21]} Na3 {[%emt 0:04:04]} 24. Bd3 {[%emt 0:03:19]} Nc4+ {[%emt 0:00:
14]} 25. Ke2 {[%emt 0:00:26]} Bc6 {[%emt 0:00:16]} 26. exf5 {[%emt 0:05:27]}
exf5 {[%emt 0:00:10]} 27. Rc1 {[%emt 0:01:43]} Bd5 {[%emt 0:03:40]} 28. Ne5 {
[%emt 0:00:23]} Ba3 {[%emt 0:02:34]} 29. Rc2 {[%emt 0:00:42]} Be6 {[%emt 0:01:
33]} 30. Bc1 {[%emt 0:01:30]} Bd5 {[%emt 0:00:29]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.31"]
[White "Tari, Aryan"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[ECO "C80"]
[WhiteElo "2646"]
[BlackElo "2577"]
[Annotator "RC"]
[PlyCount "84"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:08]} e5 {[%emt 0:00:55]} 2. Nf3 {[%emt 0:00:08]} Nc6 {
[%emt 0:00:23]} 3. Bb5 {[%emt 0:00:10]} a6 {[%emt 0:00:14]} 4. Ba4 {[%emt 0:00:
05]} Nf6 {[%emt 0:00:50]} 5. O-O {[%emt 0:00:24]} Nxe4 {[%emt 0:01:17]} 6. Re1
{[%emt 0:06:34]} b5 {[%emt 0:30:21]} 7. Nxe5 {[%emt 0:39:03]} Nxe5 {[%emt 0:02:
55]} 8. Rxe4 {[%emt 0:00:39]} d6 {[%emt 0:11:48]} 9. Bb3 {[%emt 0:06:19]} Bb7 {
[%emt 0:11:50]} 10. Re1 {[%emt 0:06:18]} Be7 {[%emt 0:00:36]} 11. d4 {[%emt 0:
01:28]} Ng6 {[%emt 0:01:10]} 12. Nc3 {[%emt 0:01:52]} O-O {[%emt 0:03:25]} 13.
Qh5 {[%emt 0:01:42]} Qd7 {[%emt 0:04:30]} 14. Nd5 {[%emt 0:02:18]} Bxd5 {
[%emt 0:07:31]} 15. Bxd5 {[%emt 0:00:46]} c6 {[%emt 0:00:20]} 16. Be4 {[%emt 0:
02:47]} Rfe8 {[%emt 0:00:10]} 17. Bd2 {[%emt 0:01:25]} Bf6 {[%emt 0:02:19]} 18.
c3 {[%emt 0:01:32]} d5 {[%emt 0:02:26]} 19. Bf5 {[%emt 0:01:35]} Qb7 {[%emt 0:
04:14]} 20. b4 {[%emt 0:03:20]} Rxe1+ {[%emt 0:02:46]} 21. Rxe1 {[%emt 0:00:21]
} Nf8 {[%emt 0:03:43]} 22. Qf3 {[%emt 0:01:30]} a5 {[%emt 0:00:08]} 23. a3 {
[%emt 0:05:07]} axb4 {[%emt 0:00:06]} 24. axb4 {[%emt 0:00:05]} Ra2 {[%emt 0:
02:06]} 25. Qf4 {[%emt 0:03:23]} Qa8 {[%emt 0:06:30]} 26. g3 {[%emt 0:03:37]}
Ra1 {[%emt 0:01:14]} 27. Bb1 {[%emt 0:03:31]} Ra7 {[%emt 0:01:05]} 28. Kg2 {
[%emt 0:01:21]} Qd8 {[%emt 0:00:42]} 29. Bd3 {[%emt 0:01:41]} Ne6 {[%emt 0:00:
47]} 30. Qg4 {[%emt 0:00:16]} Ra2 {[%emt 0:00:56]} 31. Bc1 {[%emt 0:04:18]} Qe7
{[%emt 0:03:57]} 32. Bf5 {[%emt 0:03:20]} Ra8 {[%emt 0:02:05]} 33. h4 {[%emt 0:
01:40]} Re8 {[%emt 0:01:19]} 34. Bd2 {[%emt 0:00:20]} Qd7 {[%emt 0:02:11]} 35.
h5 {[%emt 0:00:43]} g6 {[%emt 0:00:03]} 36. Bd3 {[%emt 0:01:32]} Bg7 {[%emt 0:
00:28]} 37. h6 {[%emt 0:01:48]} f5 {[%emt 0:01:00]} 38. Qh4 {[%emt 0:02:40]}
Bf8 {[%emt 0:00:01]} 39. Ra1 {[%emt 0:02:36]} Be7 {[%emt 0:00:14]} 40. Qh1 {
[%emt 0:00:11]} Bd6 {[%emt 0:00:30]} 41. Kg1 {[%emt 0:09:36]} Be7 {[%emt 0:12:
59]} 42. Re1 {[%emt 0:03:21]} Bg5 {[%emt 0:04:22]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.32"]
[White "Tabatabaei, M. Amin"]
[Black "Kuybokarov, Temur"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2639"]
[BlackElo "2549"]
[Annotator "RC"]
[PlyCount "90"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:04:03]} d5 {[%emt 0:00:19]} 2. Nf3 {[%emt 0:00:12]} Nf6 {
[%emt 0:00:32]} 3. Bf4 {[%emt 0:00:05]} c5 {[%emt 0:04:53]} 4. e3 {[%emt 0:00:
34]} Nc6 {[%emt 0:00:40]} 5. Nbd2 {[%emt 0:00:09]} Bg4 {[%emt 0:03:28]} 6. c3 {
[%emt 0:09:26]} e6 {[%emt 0:00:49]} 7. Qb3 {[%emt 0:00:16]} Qc8 {[%emt 0:01:55]
} 8. h3 {[%emt 0:00:07]} Bh5 {[%emt 0:02:00]} 9. Be2 {[%emt 0:01:00]} Be7 {
[%emt 0:10:35]} 10. O-O {[%emt 0:00:12]} O-O {[%emt 0:08:14]} 11. Qd1 {[%emt 0:
00:36]} Qd8 {[%emt 0:02:27]} 12. a4 {[%emt 0:02:08]} Bd6 {[%emt 0:04:29]} 13.
dxc5 {[%emt 0:05:54]} Bxc5 {[%emt 0:00:22]} 14. a5 {[%emt 0:01:48]} Bd6 {
[%emt 0:04:21]} 15. a6 {[%emt 0:02:12]} b6 {[%emt 0:01:35]} 16. Qa4 {[%emt 0:
00:45]} Rc8 {[%emt 0:06:53]} 17. Bb5 {[%emt 0:02:38]} Ne7 {[%emt 0:01:24]} 18.
Rfe1 {[%emt 0:04:11]} Bg6 {[%emt 0:06:59]} 19. Rad1 {[%emt 0:14:23]} Nf5 {
[%emt 0:11:11]} 20. g4 {[%emt 0:09:46]} Ne7 {[%emt 0:00:27]} 21. Ne5 {[%emt 0:
01:22]} Qc7 {[%emt 0:04:26]} 22. Ndc4 {[%emt 0:06:38]} dxc4 {[%emt 0:01:58]}
23. Rxd6 {[%emt 0:01:30]} Qxd6 {[%emt 0:00:33]} 24. Nxg6 {[%emt 0:00:08]} Qc5 {
[%emt 0:00:38]} 25. Nxf8 {[%emt 0:00:09]} Kxf8 {[%emt 0:00:08]} 26. Rd1 {
[%emt 0:00:21]} e5 {[%emt 0:03:55]} 27. Bh2 {[%emt 0:13:37]} g5 {[%emt 0:03:45]
} 28. b4 {[%emt 0:10:50]} cxb3 {[%emt 0:02:11]} 29. Qxb3 {[%emt 0:00:02]} Ng6 {
[%emt 0:02:37]} 30. c4 {[%emt 0:03:19]} Kg7 {[%emt 0:08:13]} 31. Qd3 {[%emt 0:
00:45]} Qb4 {[%emt 0:00:49]} 32. Bg3 {[%emt 0:04:36]} Qb2 {[%emt 0:00:57]} 33.
Qf5 {[%emt 0:01:45]} Rc5 {[%emt 0:00:15]} 34. Qd3 {[%emt 0:05:23]} h5 {[%emt 0:
00:11]} 35. Rd2 {[%emt 0:01:20]} Qc1+ {[%emt 0:01:24]} 36. Rd1 {[%emt 0:00:01]}
Qb2 {[%emt 0:00:05]} 37. Qd2 {[%emt 0:04:16]} Qb3 {[%emt 0:00:46]} 38. Qe2 {
[%emt 0:02:10]} hxg4 {[%emt 0:00:44]} 39. hxg4 {[%emt 0:00:01]} Ne4 {[%emt 0:
04:56]} 40. Rd7 {[%emt 0:01:18]} Nxg3 {[%emt 0:07:30]} 41. fxg3 {[%emt 0:50:02]
} e4 {[%emt 0:03:10]} 42. Rxa7 {[%emt 0:00:00]} Ne5 {[%emt 0:00:07]} 43. Re7
Nf3+ {[%emt 0:00:03]} 44. Kg2 {[%emt 0:00:01]} Qb1 {[%emt 0:00:40]} 45. Rxe4
Ne1+ {[%emt 0:00:06]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.33"]
[White "Sadhwani, Raunak"]
[Black "Niemann, Hans Moke"]
[Result "1/2-1/2"]
[ECO "C93"]
[WhiteElo "2609"]
[BlackElo "2638"]
[Annotator "RC"]
[PlyCount "149"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:02]} e5 {[%emt 0:00:21]} 2. Nf3 {[%emt 0:00:04]} Nc6 {
[%emt 0:00:10]} 3. Bb5 {[%emt 0:00:04]} a6 {[%emt 0:00:11]} 4. Ba4 {[%emt 0:00:
03]} Nf6 {[%emt 0:00:14]} 5. O-O {[%emt 0:00:05]} Be7 {[%emt 0:03:03]} 6. Re1 {
[%emt 0:00:09]} b5 {[%emt 0:00:05]} 7. Bb3 {[%emt 0:00:03]} O-O {[%emt 0:00:14]
} 8. c3 {[%emt 0:00:01]} d6 {[%emt 0:02:06]} 9. h3 {[%emt 0:00:05]} Bb7 {
[%emt 0:00:09]} 10. d4 {[%emt 0:00:05]} Re8 {[%emt 0:00:06]} 11. Ng5 {[%emt 0:
00:02]} Rf8 {[%emt 0:00:06]} 12. Nf3 {[%emt 0:00:03]} h6 {[%emt 0:06:13]} 13.
Nbd2 {[%emt 0:01:01]} Re8 {[%emt 0:00:14]} 14. Nf1 {[%emt 0:00:10]} Bf8 {
[%emt 0:00:08]} 15. Ng3 {[%emt 0:02:04]} Na5 {[%emt 0:01:06]} 16. Bc2 {[%emt 0:
00:04]} Nc4 {[%emt 0:04:37]} 17. Nh2 {[%emt 0:09:54]} d5 {[%emt 0:01:58]} 18.
b3 {[%emt 0:03:59]} Nb6 {[%emt 0:03:50]} 19. dxe5 {[%emt 0:02:34]} Nxe4 {
[%emt 0:00:22]} 20. Nxe4 {[%emt 0:10:54]} dxe4 {[%emt 0:00:13]} 21. Bf4 {
[%emt 0:01:02]} f5 {[%emt 0:05:45]} 22. exf6 {[%emt 0:01:41]} Qxf6 {[%emt 0:03:
32]} 23. Qg4 {[%emt 0:28:27]} h5 {[%emt 0:03:59]} 24. Qg3 {[%emt 0:03:18]} Bd6
{[%emt 0:07:28]} 25. Bxd6 {[%emt 0:00:25]} cxd6 {[%emt 0:00:09]} 26. Rad1 {
[%emt 0:04:11]} d5 {[%emt 0:00:24]} 27. Rd4 {[%emt 0:00:42]} Rac8 {[%emt 0:10:
27]} 28. Bd1 {[%emt 0:03:40]} Re5 {[%emt 0:03:02]} 29. Be2 {[%emt 0:10:26]} Rf8
{[%emt 0:02:05]} 30. Qe3 {[%emt 0:01:56]} Nc8 {[%emt 0:00:30]} 31. Rf1 {
[%emt 0:03:14]} Nd6 {[%emt 0:02:15]} 32. f4 {[%emt 0:01:55]} exf3 {[%emt 0:04:
48]} 33. Qxf3 {[%emt 0:00:15]} Rf5 {[%emt 0:00:05]} 34. Qxh5 {[%emt 0:14:44]}
Qe7 {[%emt 0:04:23]} 35. Qg4 {[%emt 0:03:44]} Qe3+ {[%emt 0:01:40]} 36. Kh1 {
[%emt 0:00:02]} Ne4 {[%emt 0:00:33]} 37. Bf3 {[%emt 0:00:11]} Rf4 {[%emt 0:03:
43]} 38. Qe6+ {[%emt 0:02:18]} Kh8 {[%emt 0:02:43]} 39. Qg6 {[%emt 0:00:04]}
R4f5 {[%emt 0:02:15]} 40. Qg4 {[%emt 0:01:21]} Nf2+ {[%emt 0:02:44]} 41. Rxf2 {
[%emt 0:50:07]} Qxf2 {[%emt 0:50:04]} 42. Qh4+ {[%emt 0:03:46]} Qxh4 {[%emt 0:
00:53]} 43. Rxh4+ {[%emt 0:00:06]} Kg8 {[%emt 0:00:03]} 44. Rd4 {[%emt 0:00:56]
} Rc8 {[%emt 0:01:06]} 45. Rd3 {[%emt 0:00:00]} b4 {[%emt 0:00:00]} 46. Bg4 {
[%emt 0:00:00]} bxc3 {[%emt 0:00:00]} 47. Rd1 {[%emt 0:00:00]} Rf2 {[%emt 0:00:
00]} 48. Bxc8 {[%emt 0:00:00]} Bxc8 {[%emt 0:00:00]} 49. Rc1 {[%emt 0:00:00]}
Rxa2 {[%emt 0:00:00]} 50. Nf3 {[%emt 0:00:00]} c2 {[%emt 0:00:00]} 51. Nd4 {
[%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 52. Nxc2 {[%emt 0:00:00]} Bf5 {[%emt 0:00:
00]} 53. Nb4 {[%emt 0:00:00]} Rb2 {[%emt 0:00:00]} 54. Nxd5 {[%emt 0:00:00]}
Be4 {[%emt 0:00:00]} 55. Nf4 {[%emt 0:00:34]} Rf2 {[%emt 0:00:00]} 56. Rc7+ {
[%emt 0:02:41]} Kg8 {[%emt 0:00:00]} 57. Rc4 {[%emt 0:05:15]} Rxf4 {[%emt 0:00:
00]} 58. Kg1 {[%emt 0:00:03]} a5 {[%emt 0:00:00]} 59. g3 {[%emt 0:00:42]} Rf3 {
[%emt 0:00:00]} 60. Rxe4 {[%emt 0:00:04]} Rxg3+ {[%emt 0:00:00]} 61. Kf2 {
[%emt 0:15:38]} Rxb3 {[%emt 0:00:00]} 62. Re8+ {[%emt 0:00:41]} Kf7 {[%emt 0:
00:00]} 63. Ra8 {[%emt 0:00:02]} Rb5 {[%emt 0:00:00]} 64. Ra6 {[%emt 0:00:29]}
g5 {[%emt 0:00:00]} 65. Kg3 {[%emt 0:00:24]} Ke7 {[%emt 0:00:00]} 66. h4 {
[%emt 0:00:39]} gxh4+ {[%emt 0:00:00]} 67. Kxh4 {[%emt 0:00:03]} Kd7 {[%emt 0:
00:00]} 68. Kg4 {[%emt 0:01:16]} Kc7 {[%emt 0:00:00]} 69. Kf4 {[%emt 0:00:00]}
Kb7 {[%emt 0:00:00]} 70. Rh6 {[%emt 0:00:00]} a4 {[%emt 0:00:00]} 71. Ke3 {
[%emt 0:00:00]} a3 {[%emt 0:00:00]} 72. Rh1 {[%emt 0:00:00]} Kb6 {[%emt 0:00:
00]} 73. Kd2 {[%emt 0:00:00]} Ka5 {[%emt 0:00:00]} 74. Kc3 {[%emt 0:00:00]} Rb4
{[%emt 0:00:00]} 75. Rh8 {[%emt 0:00:00]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.34"]
[White "Gelfand, Boris"]
[Black "Martirosyan, Haik M."]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2680"]
[BlackElo "2624"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,89,0,0,20,15,20,20,17,20,12,13,24,13,35,25,60,48,45,51,54,39,51,37,
76,46,45,45,53,43,30,29,37,31,30,31,42,34,37,41,28,52,48,56,105,109,168,166,
147,50,127,125,125,103,154,161,165,173,181,174,244,245,231,186,288,133,382,378,
512,506,463,447,615,602,836,838,654,605,703,702]} 1. Nf3 Nf6 2. c4 e6 3. Nc3 d5
4. d4 Be7 5. g3 O-O 6. Bg2 dxc4 7. Ne5 Nbd7 {E06: Closed Catalan: Early
deviations.} 8. Nxc4 Nb6 9. Ne5 c5 {The position is equal.} 10. dxc5 {
Threatens to win with Qxd8.} Qxd1+ 11. Nxd1 Bxc5 12. O-O {[#]} Nbd5 $146 ({
Predecessor:} 12... Bd6 13. Nd3 Nfd5 14. Ne3 Bd7 15. Nxd5 Nxd5 16. Rd1 Bc6 17.
e4 Nb4 18. Nxb4 Bxb4 {1/2-1/2 (60) Vitiugov,N (2728)-Safarli,E (2632) Antalya
2017}) 13. e4 Ne7 14. Be3 Bxe3 15. Nxe3 ({Much weaker is} 15. fxe3 Nd7 $15)
15... Bd7 16. Rfd1 Bb5 17. N5c4 Ba4 18. Rd2 Bc6 19. e5 Nfd5 20. Nxd5 Bxd5 21.
Nd6 b6 22. Rc1 Bxg2 23. Kxg2 Nd5 24. f4 Rad8 25. Kf3 f6 {Threatening ...fxe5.}
26. Ke4 fxe5 27. Kxe5 Nf6 28. Rc7 Ng4+ (28... Ne8 $16 {was necessary.} 29. Rc6
(29. Rxa7 $2 Nxd6 30. Rd3 Rf5+ 31. Kxe6 Rf6+ 32. Ke5 Rf5+ 33. Ke6 Rf6+ 34. Ke5
Nc4+ {[%mdl 64] Discovered Attack} 35. Ke4 Re8+ 36. Kd4 Nxb2 $19) 29... Nf6)
29. Kxe6 $18 Nxh2 30. Rd7 ({Resist} 30. Rxh2 $6 Rf6+ 31. Ke7 Rfxd6 $14) (30.
Rxa7 $16 {Hoping for Rd7.} Nf1 31. Rd3) 30... Ng4 ({Black should try} 30... Nf1
$14 31. Rxd8 Nxd2 32. Rxf8+ Kxf8) 31. Rxd8 $16 Rxd8 {[%mdl 4096] Endgame
KRN-KRN} 32. Rc2 Nf6 {[#]} ({Better is} 32... Rf8) 33. b4 $1 Nh5 34. Rc3 a6 35.
a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} h6 (35... Kf8 $142 36. b5 axb5) 36. Ke7 $18
Rf8 {[#]} 37. Kd7 $1 Kh7 (37... g5 $142) 38. Re3 (38. Kc7 $18) 38... Rf6 $2 {
Loses the game.} (38... Nxg3 $16 39. Rxg3 Rxf4) 39. f5 b5 40. a5 {White is
clearly winning.} Rf8 41. Kc6 Nf6 42. Re7 Nh5 43. Ne4 Nf6 44. Nc5 Rc8+ 45. Kb7
{[%mdl 64] Double Attack.  Weighted Error Value: White=0.11/Black=0.35} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.35"]
[White "Onyshchuk, Volodymyr"]
[Black "Cheparinov, Ivan"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2622"]
[BlackElo "2659"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,98,2,12,6,6,1,16,0,0,3,0,-21,-28,-16,-16,-22,0,-27,-25,-25,-20,-25,
-18,-42,-13,-20,-15,-8,-8,-31,-16,-37,-22,-16,-12,-27,-15,-16,-13,-13,-13,-17,
-11,-11,-14,-14,-12,-20,-30,-31,-32,-31,-31,-36,-37,-38,-34,-48,-58,-48,0,-8,
-25,-54,-44,-46,-8,-8,-8,-8,-8,-8,0,-8,0,-8,0,-8,0,-8,0]} 1. e4 e5 2. Nf3 Nc6
3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4 b4 9. d3 d6 10. a5
Be6 11. Nbd2 {11.Bxe6 is more fashionable. C88: Closed Ruy Lopez:
Anti-Marshall Systems.} Bxb3 12. Nxb3 Re8 13. Nfd2 Nd7 14. Nc4 {[#]} Nf8 $146 (
{Predecessor:} 14... Rb8 15. Ne3 Bg5 16. Nf5 Bxc1 17. Rxc1 Rb5 18. Qg4 g6 19.
Re3 h5 20. Qg3 Nxa5 {0-1 (54) Buczinski,H (2136)-Alascio Ruiz,J (1974) ICCF
email 2016}) 15. Be3 d5 16. exd5 Qxd5 17. Qg4 Rad8 18. Qe4 Ne6 19. Qxd5 Rxd5
20. Re2 f5 21. Rae1 Bf6 22. f4 exf4 23. Bxf4 Kf7 24. g3 Re7 25. Be3 Ne5 {
aiming for ...Nf3+.} 26. Ncd2 g5 27. h3 Ng6 28. Nc4 $1 f4 29. Bf2 fxg3 30. Bxg3
Ngf4 31. Bxf4 Nxf4 32. Rxe7+ Bxe7 33. Kh2 Bf6 34. Re4 Ne6 35. Kg3 h5 36. Kg2
Rf5 37. Ne3 Rf4 (37... Rb5 {feels hotter.} 38. Nc4 Bg7 39. Kf2 Rf5+ 40. Kg1 Rd5
) 38. Nd5 Rxe4 39. dxe4 $15 {[%mdl 4096] Endgame KBN-KNN} Be7 ({Much worse is} 
39... Bxb2 40. Nxb4 c5 41. Nxa6 $11) (39... c5 $5 {[%cal Rf6b2]} 40. c3 bxc3
41. bxc3 Bg7 $11) 40. Kf3 Bd6 41. c3 bxc3 42. bxc3 c6 43. Nb4 {The position is
equal.} Bxb4 44. cxb4 $11 {KN-KN} Kf6 45. Ke3 Ke5 46. Nd2 Kd6 47. Nb3 Ke5 48.
Nd2 Kd6 49. Nb3 Ke5 {Weighted Error Value: White=0.07/Black=0.06} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.36"]
[White "Sethuraman, S.P.."]
[Black "Rakhmanov, Aleksandr"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2620"]
[BlackElo "2657"]
[Annotator "RC"]
[PlyCount "120"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:16]} Nf6 {[%emt 0:00:07]} 2. c4 {[%emt 0:00:09]} e6 {[%emt 0:
00:15]} 3. g3 {[%emt 0:00:30]} Bb4+ {[%emt 0:00:40]} 4. Nc3 {[%emt 0:00:46]}
Ne4 {[%emt 0:04:22]} 5. Qc2 {[%emt 0:05:04]} Nxc3 {[%emt 0:01:51]} 6. bxc3 {
[%emt 0:00:12]} Be7 {[%emt 0:00:05]} 7. Bg2 {[%emt 0:00:29]} d6 {[%emt 0:00:38]
} 8. Nf3 {[%emt 0:24:07]} Nd7 {[%emt 0:01:20]} 9. O-O {[%emt 0:00:56]} O-O {
[%emt 0:03:29]} 10. h4 {[%emt 0:05:39]} h6 {[%emt 0:00:36]} 11. Rd1 {[%emt 0:
09:02]} Qe8 {[%emt 0:17:29]} 12. Rb1 {[%emt 0:13:07]} Nb6 {[%emt 0:04:54]} 13.
c5 {[%emt 0:06:38]} dxc5 {[%emt 0:02:30]} 14. Ne5 {[%emt 0:00:03]} Qa4 {
[%emt 0:03:59]} 15. Qd3 {[%emt 0:14:20]} c4 {[%emt 0:08:35]} 16. Qd2 {[%emt 0:
00:04]} c5 {[%emt 0:00:54]} 17. dxc5 {[%emt 0:05:02]} Bxc5 {[%emt 0:01:34]} 18.
e4 {[%emt 0:01:44]} Qa5 {[%emt 0:07:29]} 19. Ng4 {[%emt 0:01:20]} Be7 {[%emt 0:
17:06]} 20. Qe2 {[%emt 0:03:09]} e5 {[%emt 0:06:53]} 21. Ne3 {[%emt 0:08:09]}
Rd8 {[%emt 0:01:53]} 22. Nd5 {[%emt 0:03:53]} Nxd5 {[%emt 0:00:51]} 23. exd5 {
[%emt 0:00:05]} Bd6 {[%emt 0:07:46]} 24. Qxc4 {[%emt 0:00:17]} b6 {[%emt 0:00:
18]} 25. Qe2 {[%emt 0:03:25]} Bf5 {[%emt 0:04:59]} 26. Rb3 {[%emt 0:00:04]} Qa4
{[%emt 0:01:14]} 27. c4 {[%emt 0:00:10]} Rac8 {[%emt 0:00:23]} 28. Bf1 {
[%emt 0:00:59]} Qd7 {[%emt 0:01:18]} 29. Re1 {[%emt 0:01:17]} Rc7 {[%emt 0:01:
32]} 30. Ba3 {[%emt 0:00:14]} Bxa3 {[%emt 0:00:44]} 31. Rxa3 {[%emt 0:00:04]}
f6 {[%emt 0:00:21]} 32. Qd2 {[%emt 0:02:06]} Qd6 {[%emt 0:02:09]} 33. Rb3 {
[%emt 0:00:37]} Bd7 {[%emt 0:01:03]} 34. Qb2 {[%emt 0:00:46]} Kf8 {[%emt 0:02:
59]} 35. Qb1 {[%emt 0:00:21]} Kg8 {[%emt 0:00:14]} 36. Qg6 {[%emt 0:01:06]} Be8
{[%emt 0:00:25]} 37. Qe4 {[%emt 0:00:11]} Re7 {[%emt 0:03:07]} 38. g4 {[%emt 0:
01:30]} g6 {[%emt 0:01:39]} 39. Rg3 {[%emt 0:00:05]} Rdd7 {[%emt 0:01:36]} 40.
a4 {[%emt 0:00:44]} Qc5 {[%emt 0:00:34]} 41. Qf3 {[%emt 0:12:33]} Rd6 {[%emt 0:
02:34]} 42. g5 {[%emt 0:03:24]} hxg5 {[%emt 0:07:13]} 43. hxg5 {[%emt 0:01:54]}
f5 {[%emt 0:00:06]} 44. Qc3 {[%emt 0:11:47]} e4 {[%emt 0:00:30]} 45. Rh3 {
[%emt 0:00:20]} Rg7 {[%emt 0:00:29]} 46. Ra1 {[%emt 0:05:28]} Bd7 {[%emt 0:14:
34]} 47. a5 {[%emt 0:01:59]} f4 {[%emt 0:01:34]} 48. Qe5 {[%emt 0:08:28]} e3 {
[%emt 0:08:20]} 49. axb6 {[%emt 0:00:26]} exf2+ {[%emt 0:00:27]} 50. Kh2 {
[%emt 0:04:49]} Bxh3 {[%emt 0:01:41]} 51. Bxh3 {[%emt 0:04:25]} Qe3 {[%emt 0:
05:16]} 52. Be6+ {[%emt 0:00:14]} Kh8 {[%emt 0:03:43]} 53. Qxe3 {[%emt 0:01:26]
} fxe3 {[%emt 0:00:05]} 54. Kg2 {[%emt 0:00:05]} axb6 {[%emt 0:01:55]} 55. Kf3
{[%emt 0:00:33]} Ra7 {[%emt 0:03:17]} 56. Rh1+ {[%emt 0:00:58]} Rh7 {[%emt 0:
00:45]} 57. Ra1 {[%emt 0:00:40]} Rxe6 {[%emt 0:05:10]} 58. dxe6 {[%emt 0:00:04]
} Rh3+ {[%emt 0:00:09]} 59. Kg2 {[%emt 0:00:48]} Kg7 {[%emt 0:01:45]} 60. e7 {
[%emt 0:00:56]} Kf7 {[%emt 0:00:22]} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.37"]
[White "Gukesh D"]
[Black "Praggnanandhaa R"]
[Result "1/2-1/2"]
[ECO "D41"]
[WhiteElo "2640"]
[BlackElo "2618"]
[Annotator "RC"]
[PlyCount "68"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:44]} Nf6 {[%emt 0:00:50]} 2. c4 {[%emt 0:00:35]} e6 {[%emt 0:
00:11]} 3. Nf3 {[%emt 0:01:23]} d5 {[%emt 0:00:10]} 4. Nc3 {[%emt 0:00:39]} c5
{[%emt 0:00:37]} 5. cxd5 {[%emt 0:03:05]} Nxd5 {[%emt 0:00:28]} 6. e4 {[%emt 0:
00:40]} Nxc3 {[%emt 0:00:08]} 7. bxc3 {[%emt 0:00:03]} cxd4 {[%emt 0:00:06]} 8.
cxd4 {[%emt 0:00:04]} Bb4+ {[%emt 0:00:04]} 9. Bd2 {[%emt 0:00:06]} Bxd2+ {
[%emt 0:00:05]} 10. Qxd2 {[%emt 0:00:03]} O-O {[%emt 0:00:07]} 11. Bc4 {
[%emt 0:02:13]} Nd7 {[%emt 0:00:34]} 12. O-O {[%emt 0:00:08]} b6 {[%emt 0:00:
07]} 13. Rfe1 {[%emt 0:00:12]} Bb7 {[%emt 0:00:27]} 14. Rad1 {[%emt 0:00:07]}
Rc8 {[%emt 0:00:19]} 15. Bb3 {[%emt 0:00:06]} Re8 {[%emt 0:00:24]} 16. h3 {
[%emt 0:03:32]} h6 {[%emt 0:02:10]} 17. Re3 {[%emt 0:00:06]} Nf6 {[%emt 0:00:
40]} 18. Qe2 {[%emt 0:00:07]} Qc7 {[%emt 0:05:28]} 19. Ne5 {[%emt 0:00:14]} b5
{[%emt 0:13:46]} 20. Ng4 {[%emt 0:01:16]} Nxg4 {[%emt 0:03:58]} 21. hxg4 {
[%emt 0:00:41]} Qf4 {[%emt 0:08:35]} 22. Re1 {[%emt 0:52:09]} a6 {[%emt 0:16:
33]} 23. d5 {[%emt 0:00:28]} exd5 {[%emt 0:00:56]} 24. exd5 {[%emt 0:00:06]}
Rxe3 {[%emt 0:00:58]} 25. Qxe3 {[%emt 0:00:16]} Qxe3 {[%emt 0:01:31]} 26. Rxe3
{[%emt 0:00:06]} Rd8 {[%emt 0:01:36]} 27. d6 {[%emt 0:10:30]} Rxd6 {[%emt 0:00:
48]} 28. Re8+ {[%emt 0:00:08]} Kh7 {[%emt 0:00:05]} 29. Bxf7 {[%emt 0:00:08]}
Bd5 {[%emt 0:00:33]} 30. Bxd5 {[%emt 0:00:06]} Rxd5 {[%emt 0:00:05]} 31. Ra8 {
[%emt 0:00:07]} Rd6 {[%emt 0:01:42]} 32. Ra7 {[%emt 0:01:06]} Rd1+ {[%emt 0:01:
34]} 33. Kh2 {[%emt 0:00:06]} Rd2 {[%emt 0:00:03]} 34. Rxa6 {[%emt 0:00:06]} g6
{[%emt 0:00:13]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.38"]
[White "Ganguly, Surya Shekhar"]
[Black "Chigaev, Maksim"]
[Result "0-1"]
[ECO "E94"]
[WhiteElo "2617"]
[BlackElo "2639"]
[Annotator "RC"]
[PlyCount "116"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. Nf3 {[%emt 0:00:10]} Nf6 {[%emt 0:00:31]} 2. c4 {[%emt 0:00:46]} g6 {
[%emt 0:00:13]} 3. Nc3 {[%emt 0:00:13]} Bg7 {[%emt 0:00:07]} 4. e4 {[%emt 0:00:
07]} d6 {[%emt 0:00:07]} 5. d4 {[%emt 0:00:05]} O-O {[%emt 0:00:08]} 6. Be2 {
[%emt 0:00:03]} e5 {[%emt 0:00:16]} 7. O-O {[%emt 0:00:09]} b6 {[%emt 0:00:58]}
8. Re1 {[%emt 0:02:27]} exd4 {[%emt 0:01:02]} 9. Nxd4 {[%emt 0:00:07]} Bb7 {
[%emt 0:00:09]} 10. f3 {[%emt 0:10:12]} Nh5 {[%emt 0:00:13]} 11. f4 {[%emt 0:
04:00]} Qf6 {[%emt 0:28:55]} 12. Ndb5 {[%emt 0:06:12]} Nxf4 {[%emt 0:02:47]}
13. Nxc7 {[%emt 0:00:35]} Qg5 {[%emt 0:00:08]} 14. Bxf4 {[%emt 0:00:42]} Qxf4 {
[%emt 0:00:06]} 15. N3d5 {[%emt 0:02:45]} Qe5 {[%emt 0:04:23]} 16. Nxa8 {
[%emt 0:02:17]} Bxa8 {[%emt 0:00:06]} 17. Rb1 {[%emt 0:01:19]} Nc6 {[%emt 0:00:
24]} 18. Bf1 {[%emt 0:03:57]} Nd4 {[%emt 0:03:35]} 19. Qd2 {[%emt 0:07:24]} Qh5
{[%emt 0:05:38]} 20. Be2 {[%emt 0:05:08]} Qh4 {[%emt 0:01:23]} 21. Qf4 {
[%emt 0:01:08]} Qd8 {[%emt 0:00:47]} 22. Bd3 {[%emt 0:02:07]} Ne6 {[%emt 0:03:
35]} 23. Qf3 {[%emt 0:01:09]} Be5 {[%emt 0:00:14]} 24. Rf1 {[%emt 0:03:05]} Kg7
{[%emt 0:04:43]} 25. b3 {[%emt 0:01:21]} h5 {[%emt 0:02:34]} 26. Kh1 {[%emt 0:
03:10]} Bc6 {[%emt 0:04:40]} 27. g3 {[%emt 0:12:42]} h4 {[%emt 0:05:19]} 28. g4
{[%emt 0:02:54]} h3 {[%emt 0:00:22]} 29. Qe3 {[%emt 0:03:48]} Qh4 {[%emt 0:01:
46]} 30. Be2 {[%emt 0:00:09]} Ng5 {[%emt 0:04:25]} 31. Rbe1 {[%emt 0:02:07]}
Bd7 {[%emt 0:04:01]} 32. Rg1 {[%emt 0:06:55]} Nxe4 {[%emt 0:01:56]} 33. Rgf1 {
[%emt 0:03:41]} Ng5 {[%emt 0:01:04]} 34. Qf2 {[%emt 0:00:45]} Qxf2 {[%emt 0:00:
58]} 35. Rxf2 {[%emt 0:00:05]} Ne4 {[%emt 0:12:42]} 36. Rff1 {[%emt 0:01:48]}
Bd4 {[%emt 0:03:39]} 37. Rf4 {[%emt 0:02:27]} Re8 {[%emt 0:00:05]} 38. Ref1 {
[%emt 0:00:33]} f5 {[%emt 0:01:03]} 39. Bd3 {[%emt 0:04:08]} g5 {[%emt 0:04:57]
} 40. Bxe4 {[%emt 0:01:02]} gxf4 {[%emt 0:02:59]} 41. Bxf5 {[%emt 0:51:38]} Bc6
{[%emt 0:50:59]} 42. g5 {[%emt 0:04:49]} Re3 {[%emt 0:00:23]} 43. Rd1 {[%emt 0:
02:23]} Bc5 {[%emt 0:02:15]} 44. b4 {[%emt 0:00:32]} Bxd5+ {[%emt 0:01:14]} 45.
cxd5 {[%emt 0:00:10]} Bxb4 {[%emt 0:00:12]} 46. Kg1 {[%emt 0:00:31]} Bc5 {
[%emt 0:00:18]} 47. Kf1 {[%emt 0:00:05]} Rf3+ {[%emt 0:01:54]} 48. Ke1 {
[%emt 0:00:24]} Bb4+ {[%emt 0:00:00]} 49. Ke2 {[%emt 0:00:00]} Ra3 {[%emt 0:00:
00]} 50. Rd4 {[%emt 0:00:00]} f3+ {[%emt 0:00:00]} 51. Kf1 {[%emt 0:00:00]} Bc5
{[%emt 0:00:00]} 52. Rd3 {[%emt 0:00:00]} Rxa2 {[%emt 0:00:00]} 53. Rxf3 {
[%emt 0:00:00]} Rxh2 {[%emt 0:00:00]} 54. Be4 {[%emt 0:00:00]} a5 {[%emt 0:00:
00]} 55. g6 {[%emt 0:00:00]} a4 {[%emt 0:00:00]} 56. Rf7+ {[%emt 0:00:00]} Kg8
{[%emt 0:00:00]} 57. Ke1 {[%emt 0:00:00]} a3 {[%emt 0:00:00]} 58. Ra7 {[%emt 0:
00:00]} b5 {[%emt 0:00:00]} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.39"]
[White "Ponomariov, Ruslan"]
[Black "Jobava, Baadur"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2631"]
[BlackElo "2582"]
[Annotator "RC"]
[PlyCount "67"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:04]} d5 {[%emt 0:03:42]} 2. c4 {[%emt 0:00:16]} c6 {[%emt 0:
00:04]} 3. Nf3 {[%emt 0:00:18]} Nf6 {[%emt 0:00:07]} 4. g3 {[%emt 0:00:25]} Bf5
{[%emt 0:00:54]} 5. Nc3 {[%emt 0:00:48]} e6 {[%emt 0:00:07]} 6. Nh4 {[%emt 0:
00:34]} dxc4 {[%emt 0:12:10]} 7. Nxf5 {[%emt 0:01:29]} exf5 {[%emt 0:04:40]} 8.
e3 {[%emt 0:00:05]} b5 {[%emt 0:03:45]} 9. Bg2 {[%emt 0:10:48]} Bb4 {[%emt 0:
08:48]} 10. O-O {[%emt 0:04:48]} Bxc3 {[%emt 0:00:06]} 11. bxc3 {[%emt 0:00:05]
} O-O {[%emt 0:00:05]} 12. a4 {[%emt 0:04:50]} Ne4 {[%emt 0:04:21]} 13. Qc2 {
[%emt 0:02:54]} Nd7 {[%emt 0:19:42]} 14. g4 {[%emt 0:16:20]} g6 {[%emt 0:01:22]
} 15. gxf5 {[%emt 0:03:05]} gxf5 {[%emt 0:00:07]} 16. f3 {[%emt 0:00:15]} Nd6 {
[%emt 0:00:32]} 17. e4 {[%emt 0:06:53]} Nb6 {[%emt 0:00:13]} 18. e5 {[%emt 0:
03:41]} Ndc8 {[%emt 0:08:58]} 19. axb5 {[%emt 0:02:50]} cxb5 {[%emt 0:06:06]}
20. Qxf5 {[%emt 0:08:17]} Ne7 {[%emt 0:04:13]} 21. Qh5 {[%emt 0:02:42]} Nbd5 {
[%emt 0:06:22]} 22. Ra6 {[%emt 0:05:05]} Nxc3 {[%emt 0:03:42]} 23. Rd6 {
[%emt 0:01:44]} Qe8 {[%emt 0:00:51]} 24. Bh6 {[%emt 0:06:05]} Ng6 {[%emt 0:18:
50]} 25. f4 {[%emt 0:10:58]} Rd8 {[%emt 0:00:04]} 26. f5 {[%emt 0:03:28]} Rxd6
{[%emt 0:00:05]} 27. exd6 {[%emt 0:00:08]} Qe2 {[%emt 0:00:19]} 28. Bf3 {
[%emt 0:00:22]} Qd3 {[%emt 0:00:07]} 29. Bxf8 {[%emt 0:00:13]} Qxd4+ {[%emt 0:
02:06]} 30. Kh1 {[%emt 0:00:09]} Kxf8 {[%emt 0:01:18]} 31. fxg6 {[%emt 0:03:21]
} hxg6 {[%emt 0:00:06]} 32. Qh7 {[%emt 0:00:12]} Ne4 {[%emt 0:00:54]} 33. d7 {
[%emt 0:01:22]} Nc5 {[%emt 0:00:20]} 34. Bc6 {[%emt 0:01:06]} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.40"]
[White "Adly, Ahmed"]
[Black "Zhou, Jianchao"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "2602"]
[BlackElo "2629"]
[Annotator "RC"]
[PlyCount "74"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. Nf3 {[%emt 0:02:30]} c5 {[%emt 0:00:19]} 2. g3 {[%emt 0:00:16]} Nc6 {
[%emt 0:00:07]} 3. Bg2 {[%emt 0:00:07]} Nf6 {[%emt 0:00:23]} 4. O-O {[%emt 0:
00:29]} e5 {[%emt 0:00:12]} 5. d3 {[%emt 0:00:43]} d5 {[%emt 0:00:27]} 6. e4 {
[%emt 0:00:11]} Be7 {[%emt 0:00:12]} 7. Nc3 {[%emt 0:00:19]} d4 {[%emt 0:00:06]
} 8. Ne2 {[%emt 0:03:16]} Nd7 {[%emt 0:01:11]} 9. Nd2 {[%emt 0:01:28]} h5 {
[%emt 0:00:41]} 10. f4 {[%emt 0:06:23]} h4 {[%emt 0:00:23]} 11. Nf3 {[%emt 0:
00:23]} hxg3 {[%emt 0:02:59]} 12. Nxg3 {[%emt 0:00:03]} exf4 {[%emt 0:01:21]}
13. Nf5 {[%emt 0:13:22]} g5 {[%emt 0:05:07]} 14. h4 {[%emt 0:02:55]} f6 {
[%emt 0:10:46]} 15. hxg5 {[%emt 0:45:59]} fxg5 {[%emt 0:02:29]} 16. Nxg5 {
[%emt 0:00:02]} Bxg5 {[%emt 0:01:02]} 17. Nd6+ {[%emt 0:00:02]} Ke7 {[%emt 0:
04:00]} 18. Nf5+ {[%emt 0:00:06]} Kf8 {[%emt 0:01:24]} 19. Bxf4 {[%emt 0:04:28]
} Bxf4 {[%emt 0:02:52]} 20. Rxf4 {[%emt 0:00:03]} Nde5 {[%emt 0:02:33]} 21. c3
{[%emt 0:09:55]} Bxf5 {[%emt 0:07:26]} 22. Qb3 {[%emt 0:03:41]} dxc3 {[%emt 0:
10:39]} 23. Rxf5+ {[%emt 0:00:22]} Ke8 {[%emt 0:02:43]} 24. bxc3 {[%emt 0:01:
29]} Qe7 {[%emt 0:03:30]} 25. Rb1 {[%emt 0:00:01]} c4 {[%emt 0:04:48]} 26. Qa4
{[%emt 0:05:14]} cxd3 {[%emt 0:04:02]} 27. Rxb7 {[%emt 0:04:03]} Qxb7 {[%emt 0:
02:09]} 28. Rxe5+ {[%emt 0:00:02]} Kd8 {[%emt 0:00:19]} 29. Rd5+ {[%emt 0:00:
10]} Kc7 {[%emt 0:00:10]} 30. Rb5 {[%emt 0:00:08]} Qxb5 {[%emt 0:15:25]} 31.
Qxb5 {[%emt 0:00:02]} d2 {[%emt 0:00:06]} 32. Qb3 {[%emt 0:04:34]} Rhf8 {
[%emt 0:03:28]} 33. Bf1 {[%emt 0:02:26]} Rad8 {[%emt 0:02:52]} 34. Qd1 {
[%emt 0:01:12]} Ne5 {[%emt 0:01:30]} 35. Be2 {[%emt 0:00:45]} Rd7 {[%emt 0:00:
40]} 36. Bh5 {[%emt 0:00:21]} Rg7+ {[%emt 0:00:14]} 37. Kh2 {[%emt 0:00:03]}
Rh8 {[%emt 0:00:13]} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.41"]
[White "Kovalev, Vladislav"]
[Black "Indjic, Aleksandar"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2634"]
[BlackElo "2612"]
[Annotator "RC"]
[PlyCount "60"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:06]} e5 {[%emt 0:01:46]} 2. Nf3 {[%emt 0:00:09]} Nf6 {
[%emt 0:00:26]} 3. Nc3 {[%emt 0:03:47]} Bb4 {[%emt 0:01:26]} 4. Nxe5 {[%emt 0:
01:27]} O-O {[%emt 0:00:39]} 5. Be2 {[%emt 0:07:44]} Re8 {[%emt 0:04:35]} 6.
Nd3 {[%emt 0:03:12]} Bxc3 {[%emt 0:00:32]} 7. dxc3 {[%emt 0:00:08]} Nxe4 {
[%emt 0:00:07]} 8. O-O {[%emt 0:03:32]} d6 {[%emt 0:00:13]} 9. f3 {[%emt 0:04:
44]} Nf6 {[%emt 0:01:05]} 10. Bg5 {[%emt 0:01:22]} Nbd7 {[%emt 0:00:31]} 11.
Re1 {[%emt 0:04:50]} h6 {[%emt 0:14:31]} 12. Bh4 {[%emt 0:02:07]} Nf8 {[%emt 0:
03:38]} 13. Qd2 {[%emt 0:05:51]} Ng6 {[%emt 0:02:31]} 14. Bf2 {[%emt 0:00:06]}
a5 {[%emt 0:01:34]} 15. Nf4 {[%emt 0:02:50]} Bf5 {[%emt 0:01:10]} 16. Nxg6 {
[%emt 0:06:38]} Bxg6 {[%emt 0:00:44]} 17. a4 {[%emt 0:13:32]} Re6 {[%emt 0:10:
42]} 18. Bc4 {[%emt 0:04:55]} Rxe1+ {[%emt 0:01:24]} 19. Rxe1 {[%emt 0:00:03]}
Qd7 {[%emt 0:04:19]} 20. Bb5 {[%emt 0:03:58]} Qf5 {[%emt 0:00:25]} 21. Re2 {
[%emt 0:05:00]} Qd5 {[%emt 0:05:21]} 22. Qxd5 {[%emt 0:05:39]} Nxd5 {[%emt 0:
00:31]} 23. g3 {[%emt 0:06:02]} Kf8 {[%emt 0:02:59]} 24. Rd2 {[%emt 0:00:30]}
Ne7 {[%emt 0:00:30]} 25. Kg2 {[%emt 0:00:26]} f6 {[%emt 0:01:35]} 26. b3 {
[%emt 0:00:05]} Be8 {[%emt 0:00:30]} 27. Bd3 {[%emt 0:00:30]} Bc6 {[%emt 0:00:
30]} 28. c4 {[%emt 0:03:00]} b6 {[%emt 0:01:29]} 29. g4 {[%emt 0:00:00]} Kf7 {
[%emt 0:01:45]} 30. Re2 {[%emt 0:01:42]} h5 {[%emt 0:02:14]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.42"]
[White "Jumabayev, Rinat"]
[Black "Goryachkina, Aleksandra"]
[Result "0-1"]
[ECO "D78"]
[WhiteElo "2658"]
[BlackElo "2602"]
[Annotator "RC"]
[PlyCount "136"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. Nf3 {[%emt 0:00:08]} d5 {[%emt 0:00:11]} 2. g3 {[%emt 0:00:06]} g6 {[%emt 0:
00:29]} 3. Bg2 {[%emt 0:00:15]} Bg7 {[%emt 0:00:20]} 4. O-O {[%emt 0:00:16]}
Nf6 {[%emt 0:00:20]} 5. c4 {[%emt 0:00:09]} c6 {[%emt 0:00:31]} 6. b3 {[%emt 0:
00:10]} Ne4 {[%emt 0:01:48]} 7. d4 {[%emt 0:03:18]} O-O {[%emt 0:00:38]} 8. e3
{[%emt 0:07:24]} a5 {[%emt 0:05:18]} 9. Na3 {[%emt 0:12:57]} Bf5 {[%emt 0:06:
03]} 10. Bb2 {[%emt 0:03:13]} Nd7 {[%emt 0:07:31]} 11. Qe2 {[%emt 0:03:42]} Qb6
{[%emt 0:14:14]} 12. Nh4 {[%emt 0:40:39]} Be6 {[%emt 0:07:14]} 13. f3 {[%emt 0:
02:16]} Nef6 {[%emt 0:00:08]} 14. e4 {[%emt 0:01:36]} g5 {[%emt 0:12:32]} 15.
Nf5 {[%emt 0:01:36]} Bxf5 {[%emt 0:00:27]} 16. exf5 {[%emt 0:00:02]} Rae8 {
[%emt 0:00:47]} 17. Bh3 {[%emt 0:05:34]} Kh8 {[%emt 0:02:21]} 18. Kh1 {[%emt 0:
02:15]} e6 {[%emt 0:05:04]} 19. fxe6 {[%emt 0:04:13]} fxe6 {[%emt 0:00:06]} 20.
Nc2 {[%emt 0:00:10]} dxc4 {[%emt 0:09:19]} 21. Qxc4 {[%emt 0:00:46]} Nd5 {
[%emt 0:01:30]} 22. Rae1 {[%emt 0:01:07]} Rf6 {[%emt 0:02:42]} 23. Bg4 {
[%emt 0:02:31]} Qc7 {[%emt 0:02:02]} 24. Re2 {[%emt 0:01:30]} N7b6 {[%emt 0:01:
52]} 25. Qd3 {[%emt 0:00:20]} Qf7 {[%emt 0:01:40]} 26. Bc1 {[%emt 0:04:44]} h5
{[%emt 0:05:43]} 27. Bh3 {[%emt 0:00:14]} Bh6 {[%emt 0:00:52]} 28. Re5 {
[%emt 0:03:03]} Rg8 {[%emt 0:02:46]} 29. Qe2 {[%emt 0:00:30]} Rgg6 {[%emt 0:06:
58]} 30. Ne1 {[%emt 0:07:49]} Nd7 {[%emt 0:03:31]} 31. Nd3 {[%emt 0:01:56]} Qe7
{[%emt 0:00:30]} 32. f4 {[%emt 0:00:30]} gxf4 {[%emt 0:05:25]} 33. Rxh5 {
[%emt 0:00:46]} fxg3 {[%emt 0:02:55]} 34. Ne5 {[%emt 0:00:15]} Nxe5 {[%emt 0:
01:31]} 35. dxe5 {[%emt 0:01:26]} Rxf1+ {[%emt 0:00:36]} 36. Qxf1 {[%emt 0:00:
09]} Kg7 {[%emt 0:00:41]} 37. Rxh6 {[%emt 0:00:41]} Rxh6 {[%emt 0:00:02]} 38.
Bxh6+ {[%emt 0:00:05]} Kxh6 {[%emt 0:00:07]} 39. hxg3 {[%emt 0:00:07]} Kg7 {
[%emt 0:01:38]} 40. Qc1 {[%emt 0:00:49]} Nc7 {[%emt 0:00:49]} 41. Kg2 {[%emt 0:
09:20]} Qd8 {[%emt 0:05:49]} 42. Qf4 {[%emt 0:03:28]} Qd5+ {[%emt 0:02:01]} 43.
Kh2 {[%emt 0:02:05]} Qd8 {[%emt 0:01:01]} 44. Qe3 {[%emt 0:06:47]} Qd7 {
[%emt 0:04:56]} 45. Qg5+ {[%emt 0:02:33]} Kf8 {[%emt 0:00:32]} 46. Bg4 {
[%emt 0:06:25]} Qf7 {[%emt 0:07:08]} 47. Kg2 {[%emt 0:09:20]} Nd5 {[%emt 0:03:
05]} 48. Qd8+ {[%emt 0:00:06]} Kg7 {[%emt 0:00:17]} 49. Qg5+ {[%emt 0:00:06]}
Kf8 {[%emt 0:00:15]} 50. Bf3 {[%emt 0:02:06]} Qe7 {[%emt 0:04:01]} 51. Qxe7+ {
[%emt 0:06:17]} Kxe7 {[%emt 0:00:23]} 52. a3 {[%emt 0:03:33]} Nb6 {[%emt 0:01:
10]} 53. b4 {[%emt 0:02:54]} axb4 {[%emt 0:01:21]} 54. axb4 {[%emt 0:00:01]}
Nc4 {[%emt 0:02:58]} 55. Kf2 {[%emt 0:01:25]} Nxe5 {[%emt 0:00:18]} 56. Be2 {
[%emt 0:00:03]} Nd7 {[%emt 0:05:55]} 57. Ke3 {[%emt 0:01:10]} Nf6 {[%emt 0:01:
49]} 58. Kd4 {[%emt 0:01:31]} Kd6 {[%emt 0:00:43]} 59. b5 {[%emt 0:01:01]} c5+
{[%emt 0:00:37]} 60. Kd3 {[%emt 0:00:16]} b6 {[%emt 0:01:06]} 61. Ke3 {[%emt 0:
07:56]} Ke5 {[%emt 0:00:31]} 62. Bf3 {[%emt 0:02:34]} Nd5+ {[%emt 0:01:10]} 63.
Kd3 {[%emt 0:00:34]} Ne7 {[%emt 0:00:13]} 64. Bb7 {[%emt 0:05:24]} Nf5 {
[%emt 0:01:25]} 65. g4 {[%emt 0:00:06]} Nd6 {[%emt 0:01:44]} 66. Bc6 {[%emt 0:
00:04]} Kf4 {[%emt 0:01:06]} 67. Bd7 {[%emt 0:00:05]} e5 {[%emt 0:00:09]} 68.
Ke2 {[%emt 0:00:15]} Ne4 {[%emt 0:00:47]} 0-1

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.43"]
[White "Durarbayli, Vasif"]
[Black "Bartel, Mateusz"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2629"]
[BlackElo "2597"]
[Annotator "RC"]
[PlyCount "150"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:03]} e5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:07]} Nc6 {
[%emt 0:00:05]} 3. d4 {[%emt 0:00:04]} exd4 {[%emt 0:00:07]} 4. Nxd4 {[%emt 0:
00:04]} Bc5 {[%emt 0:00:08]} 5. Nb3 {[%emt 0:00:06]} Bb6 {[%emt 0:00:08]} 6.
Qe2 {[%emt 0:00:08]} d6 {[%emt 0:02:30]} 7. Nc3 {[%emt 0:01:39]} a5 {[%emt 0:
00:02]} 8. Nd5 {[%emt 0:04:54]} a4 {[%emt 0:01:55]} 9. Nd2 {[%emt 0:04:03]} Bc5
{[%emt 0:05:36]} 10. b4 {[%emt 0:11:38]} axb3 {[%emt 0:08:37]} 11. Nxb3 {
[%emt 0:01:21]} Ba3 {[%emt 0:00:06]} 12. Bd2 {[%emt 0:09:43]} Nge7 {[%emt 0:02:
07]} 13. Bc3 {[%emt 0:00:29]} O-O {[%emt 0:07:41]} 14. Qd2 {[%emt 0:01:51]} Ra4
{[%emt 0:12:48]} 15. f3 {[%emt 0:20:44]} Nxd5 {[%emt 0:02:43]} 16. exd5 {
[%emt 0:00:06]} Ne5 {[%emt 0:00:56]} 17. Bb5 {[%emt 0:10:30]} Qh4+ {[%emt 0:00:
15]} 18. Qf2 {[%emt 0:00:06]} Bb4 {[%emt 0:00:08]} 19. Bd2 {[%emt 0:01:59]}
Bxd2+ {[%emt 0:08:40]} 20. Nxd2 {[%emt 0:00:05]} Qxf2+ {[%emt 0:00:24]} 21.
Kxf2 {[%emt 0:00:02]} Rd4 {[%emt 0:00:08]} 22. Nb3 {[%emt 0:04:51]} Rxd5 {
[%emt 0:00:57]} 23. c4 {[%emt 0:00:43]} Rd3 {[%emt 0:00:20]} 24. c5 {[%emt 0:
00:05]} Rc3 {[%emt 0:18:30]} 25. cxd6 {[%emt 0:00:54]} Rc2+ {[%emt 0:00:11]}
26. Kg3 {[%emt 0:04:13]} f5 {[%emt 0:11:47]} 27. f4 {[%emt 0:03:21]} Rc3+ {
[%emt 0:00:33]} 28. Kf2 {[%emt 0:00:06]} Ng4+ {[%emt 0:00:09]} 29. Ke2 {
[%emt 0:03:28]} Re3+ {[%emt 0:00:36]} 30. Kf1 {[%emt 0:01:42]} cxd6 {[%emt 0:
02:45]} 31. Rc1 {[%emt 0:01:26]} Re4 {[%emt 0:02:20]} 32. g3 {[%emt 0:00:06]}
Be6 {[%emt 0:00:04]} 33. h3 {[%emt 0:02:29]} Ne3+ {[%emt 0:00:30]} 34. Kf2 {
[%emt 0:00:02]} Ra8 {[%emt 0:00:07]} 35. Bd3 {[%emt 0:02:48]} Rxa2+ {[%emt 0:
01:14]} 36. Kf3 {[%emt 0:00:01]} Rb4 {[%emt 0:07:19]} 37. Nd4 {[%emt 0:00:08]}
Rxd4 {[%emt 0:01:48]} 38. Kxe3 {[%emt 0:00:01]} Rb4 {[%emt 0:00:09]} 39. Rb1 {
[%emt 0:00:14]} Rab2 {[%emt 0:00:30]} 40. Rxb2 {[%emt 0:00:30]} Rxb2 {[%emt 0:
00:30]} 41. g4 {[%emt 0:50:30]} Kf7 {[%emt 0:50:30]} 42. Rc1 {[%emt 0:00:30]}
fxg4 {[%emt 0:00:30]} 43. hxg4 {[%emt 0:00:30]} Bxg4 {[%emt 0:00:30]} 44. Bxh7
{[%emt 0:00:30]} Re2+ {[%emt 0:11:43]} 45. Kd3 {[%emt 0:10:59]} Re7 {[%emt 0:
00:13]} 46. Be4 {[%emt 0:01:37]} Kf6 {[%emt 0:00:19]} 47. Kd4 {[%emt 0:00:14]}
Bf5 {[%emt 0:01:10]} 48. Bd5 {[%emt 0:00:16]} Bg6 {[%emt 0:00:42]} 49. Rg1 {
[%emt 0:02:21]} Be8 {[%emt 0:02:57]} 50. Be4 {[%emt 0:00:29]} Rc7 {[%emt 0:00:
00]} 51. Rg5 {[%emt 0:00:00]} b5 {[%emt 0:00:00]} 52. Rf5+ {[%emt 0:00:00]} Ke6
{[%emt 0:00:00]} 53. Rf8 {[%emt 0:00:00]} Rc4+ {[%emt 0:00:00]} 54. Ke3 {
[%emt 0:00:00]} Bc6 {[%emt 0:00:00]} 55. Bd3 {[%emt 0:00:00]} Ra4 {[%emt 0:00:
00]} 56. Rg8 {[%emt 0:00:00]} Ra7 {[%emt 0:00:00]} 57. Rc8 {[%emt 0:00:00]} Bd7
{[%emt 0:00:00]} 58. Rg8 {[%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 59. Rb8 {
[%emt 0:00:00]} Ra3 {[%emt 0:00:00]} 60. Rb7 {[%emt 0:00:00]} Ke8 {[%emt 0:00:
00]} 61. Kd4 {[%emt 0:00:00]} Ra4+ {[%emt 0:00:00]} 62. Ke3 {[%emt 0:00:00]}
Rb4 {[%emt 0:00:00]} 63. Rb8+ {[%emt 0:00:00]} Ke7 {[%emt 0:00:00]} 64. Rg8 {
[%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 65. Rd8 {[%emt 0:00:00]} Ke6 {[%emt 0:00:
00]} 66. Rg8 {[%emt 0:00:00]} Kf7 {[%emt 0:00:00]} 67. Rd8 {[%emt 0:00:00]} Be6
{[%emt 0:00:00]} 68. Rxd6 {[%emt 0:00:00]} Rb3 {[%emt 0:00:00]} 69. Kd4 {
[%emt 0:00:00]} Bc4 {[%emt 0:00:00]} 70. Bxc4+ {[%emt 0:00:00]} bxc4 {[%emt 0:
00:00]} 71. Rc6 {[%emt 0:00:00]} c3 {[%emt 0:00:00]} 72. Rxc3 {[%emt 0:00:00]}
Rxc3 {[%emt 0:00:00]} 73. Kxc3 {[%emt 0:00:00]} Kf6 {[%emt 0:00:00]} 74. Kd4 {
[%emt 0:00:00]} g5 {[%emt 0:00:00]} 75. fxg5+ {[%emt 0:00:00]} Kxg5 {[%emt 0:
00:04]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.44"]
[White "Pichot, Alan"]
[Black "Gretarsson, Hjorvar Steinn"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2628"]
[BlackElo "2577"]
[Annotator "RC"]
[PlyCount "79"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:03]} c6 {[%emt 0:02:25]} 2. d4 {[%emt 0:00:08]} d5 {[%emt 0:
01:15]} 3. e5 {[%emt 0:00:07]} Bf5 {[%emt 0:00:06]} 4. h4 {[%emt 0:00:05]} h5 {
[%emt 0:00:55]} 5. Bd3 {[%emt 0:00:06]} Bxd3 {[%emt 0:00:16]} 6. Qxd3 {[%emt 0:
00:05]} Qa5+ {[%emt 0:00:52]} 7. b4 {[%emt 0:00:07]} Qxb4+ {[%emt 0:04:54]} 8.
Nd2 {[%emt 0:00:06]} e6 {[%emt 0:04:43]} 9. Rb1 {[%emt 0:00:07]} Qe7 {[%emt 0:
00:06]} 10. Ne2 {[%emt 0:00:04]} b5 {[%emt 0:08:32]} 11. Nf3 {[%emt 0:00:19]}
Na6 {[%emt 0:17:05]} 12. O-O {[%emt 0:02:19]} Nc7 {[%emt 0:03:18]} 13. a4 {
[%emt 0:04:40]} Qd7 {[%emt 0:04:05]} 14. Nf4 {[%emt 0:07:22]} a5 {[%emt 0:12:
43]} 15. Bd2 {[%emt 0:07:54]} Ne7 {[%emt 0:07:33]} 16. Ra1 {[%emt 0:01:12]} b4
{[%emt 0:09:39]} 17. c3 {[%emt 0:01:45]} Nf5 {[%emt 0:02:11]} 18. cxb4 {
[%emt 0:01:52]} axb4 {[%emt 0:00:07]} 19. Rfc1 {[%emt 0:06:39]} Na6 {[%emt 0:
02:13]} 20. Qc2 {[%emt 0:15:51]} c5 {[%emt 0:01:18]} 21. dxc5 {[%emt 0:00:04]}
Bxc5 {[%emt 0:00:42]} 22. Qd3 {[%emt 0:00:14]} g6 {[%emt 0:09:18]} 23. Qb5 {
[%emt 0:25:23]} Nd4 {[%emt 0:01:18]} 24. Nxd4 {[%emt 0:00:11]} Bxd4 {[%emt 0:
00:07]} 25. Rab1 {[%emt 0:02:24]} Bxe5 {[%emt 0:04:06]} 26. Nd3 {[%emt 0:04:05]
} Bc3 {[%emt 0:11:54]} 27. Bxc3 {[%emt 0:03:14]} bxc3 {[%emt 0:00:05]} 28. Rxc3
{[%emt 0:00:06]} Rb8 {[%emt 0:00:30]} 29. Qxb8+ {[%emt 0:00:08]} Nxb8 {[%emt 0:
00:04]} 30. Rxb8+ {[%emt 0:00:07]} Ke7 {[%emt 0:00:06]} 31. Rxh8 {[%emt 0:00:
06]} Qxa4 {[%emt 0:00:24]} 32. Rhc8 {[%emt 0:03:59]} Kf6 {[%emt 0:02:50]} 33.
Nc5 {[%emt 0:02:07]} Qd1+ {[%emt 0:00:27]} 34. Kh2 {[%emt 0:00:02]} Qd4 {
[%emt 0:00:48]} 35. Rf3+ {[%emt 0:01:05]} Kg7 {[%emt 0:00:15]} 36. g3 {[%emt 0:
02:07]} Qe5 {[%emt 0:01:45]} 37. Rf8 {[%emt 0:01:11]} f5 {[%emt 0:00:00]} 38.
Re3 {[%emt 0:00:43]} Qb2 {[%emt 0:00:00]} 39. Nxe6+ {[%emt 0:00:00]} Kh6 {
[%emt 0:00:00]} 40. Kg2 {[%emt 0:00:23]} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.45"]
[White "Kollars, Dmitrij"]
[Black "Suleymanli, Aydin"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2621"]
[BlackElo "2541"]
[Annotator "RC"]
[PlyCount "113"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:01:48]} e6 {[%emt 0:00:07]} 2. d4 {[%emt 0:00:07]} d5 {[%emt 0:
00:05]} 3. Nd2 {[%emt 0:00:24]} dxe4 {[%emt 0:00:34]} 4. Nxe4 {[%emt 0:00:06]}
Nd7 {[%emt 0:00:04]} 5. Nf3 {[%emt 0:01:34]} Ngf6 {[%emt 0:00:05]} 6. Nxf6+ {
[%emt 0:00:27]} Nxf6 {[%emt 0:00:06]} 7. c3 {[%emt 0:00:07]} c5 {[%emt 0:00:42]
} 8. Ne5 {[%emt 0:01:14]} a6 {[%emt 0:01:16]} 9. Qa4+ {[%emt 0:01:58]} Bd7 {
[%emt 0:00:18]} 10. Nxd7 {[%emt 0:00:07]} Qxd7 {[%emt 0:00:11]} 11. Qxd7+ {
[%emt 0:00:37]} Nxd7 {[%emt 0:01:07]} 12. Be3 {[%emt 0:05:30]} cxd4 {[%emt 0:
00:26]} 13. Bxd4 {[%emt 0:00:07]} O-O-O {[%emt 0:00:18]} 14. Rd1 {[%emt 0:06:
18]} Rg8 {[%emt 0:01:21]} 15. Be3 {[%emt 0:04:37]} Be7 {[%emt 0:07:16]} 16. Bd3
{[%emt 0:03:08]} h6 {[%emt 0:02:49]} 17. Bc2 {[%emt 0:14:18]} Nf6 {[%emt 0:00:
35]} 18. O-O {[%emt 0:01:21]} Nd5 {[%emt 0:00:23]} 19. Bc1 {[%emt 0:04:03]} Rd7
{[%emt 0:06:37]} 20. g3 {[%emt 0:07:03]} Rgd8 {[%emt 0:00:14]} 21. Rfe1 {
[%emt 0:00:31]} Bf6 {[%emt 0:00:54]} 22. Rd3 {[%emt 0:07:04]} Nc7 {[%emt 0:01:
33]} 23. Rxd7 {[%emt 0:02:30]} Rxd7 {[%emt 0:00:45]} 24. Kf1 {[%emt 0:03:21]}
Rd5 {[%emt 0:03:04]} 25. Be4 {[%emt 0:02:19]} Ra5 {[%emt 0:00:25]} 26. a3 {
[%emt 0:00:25]} Rb5 {[%emt 0:01:48]} 27. Rd1 {[%emt 0:02:09]} Re5 {[%emt 0:03:
19]} 28. Bg2 {[%emt 0:02:23]} Rc5 {[%emt 0:02:09]} 29. Ke2 {[%emt 0:03:57]} Nd5
{[%emt 0:02:53]} 30. Rd3 {[%emt 0:00:23]} b5 {[%emt 0:01:56]} 31. Bd2 {[%emt 0:
02:33]} Kc7 {[%emt 0:02:54]} 32. Kd1 {[%emt 0:03:06]} a5 {[%emt 0:04:06]} 33.
b4 {[%emt 0:05:54]} Rxc3 {[%emt 0:01:13]} 34. Bxc3 {[%emt 0:00:41]} Nxc3+ {
[%emt 0:00:08]} 35. Kd2 {[%emt 0:05:01]} axb4 {[%emt 0:00:20]} 36. axb4 {
[%emt 0:00:04]} Na2 {[%emt 0:03:19]} 37. Ra3 {[%emt 0:00:37]} Nxb4 {[%emt 0:00:
06]} 38. Ra7+ {[%emt 0:00:06]} Kd6 {[%emt 0:02:32]} 39. Rxf7 {[%emt 0:00:34]}
Nd5 {[%emt 0:00:10]} 40. Rb7 {[%emt 0:13:41]} Kc6 {[%emt 0:03:53]} 41. Rb8 {
[%emt 0:54:07]} Be5 {[%emt 0:52:05]} 42. Rc8+ {[%emt 0:00:53]} Kd7 {[%emt 0:01:
04]} 43. Ra8 {[%emt 0:04:16]} Nc7 {[%emt 0:02:32]} 44. Rb8 {[%emt 0:00:00]} Bd4
{[%emt 0:00:00]} 45. f4 {[%emt 0:00:00]} Bg1 {[%emt 0:00:00]} 46. Rg8 {[%emt 0:
00:00]} Bd4 {[%emt 0:00:00]} 47. Kd3 {[%emt 0:00:00]} Bf6 {[%emt 0:00:00]} 48.
Rb8 {[%emt 0:00:00]} Be7 {[%emt 0:00:00]} 49. h4 {[%emt 0:00:00]} Ba3 {[%emt 0:
00:00]} 50. h5 {[%emt 0:00:00]} Bb2 {[%emt 0:00:00]} 51. Rb6 {[%emt 0:00:00]}
e5 {[%emt 0:00:00]} 52. f5 {[%emt 0:00:00]} b4 {[%emt 0:15:26]} 53. Rxb4 {
[%emt 0:00:00]} Bd4 {[%emt 0:00:12]} 54. Rb8 {[%emt 0:00:00]} Ke7 {[%emt 0:00:
32]} 55. Rb7 {[%emt 0:00:00]} Kd6 {[%emt 0:00:08]} 56. g4 {[%emt 0:00:00]} Ba1
{[%emt 0:00:51]} 57. Be4 {[%emt 0:00:00]} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.46"]
[White "Ivic, Velimir"]
[Black "Vokhidov, Shamsiddin"]
[Result "1/2-1/2"]
[ECO "B66"]
[WhiteElo "2606"]
[BlackElo "2521"]
[Annotator "RC"]
[PlyCount "178"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:04]} c5 {[%emt 0:00:02]} 2. Nf3 {[%emt 0:00:05]} d6 {[%emt 0:
00:02]} 3. d4 {[%emt 0:00:06]} cxd4 {[%emt 0:00:03]} 4. Nxd4 {[%emt 0:00:06]}
Nf6 {[%emt 0:00:04]} 5. Nc3 {[%emt 0:00:03]} Nc6 {[%emt 0:00:03]} 6. Bg5 {
[%emt 0:00:06]} e6 {[%emt 0:00:05]} 7. Qd2 {[%emt 0:00:04]} Be7 {[%emt 0:00:05]
} 8. O-O-O {[%emt 0:05:56]} a6 {[%emt 0:00:10]} 9. f3 {[%emt 0:02:07]} Nxd4 {
[%emt 0:01:01]} 10. Qxd4 {[%emt 0:00:05]} b5 {[%emt 0:00:03]} 11. Kb1 {[%emt 0:
04:19]} Bb7 {[%emt 0:00:11]} 12. Bc1 {[%emt 0:03:48]} Qc7 {[%emt 0:11:00]} 13.
g4 {[%emt 0:19:55]} b4 {[%emt 0:17:47]} 14. Qxb4 {[%emt 0:08:30]} d5 {[%emt 0:
00:06]} 15. Qd4 {[%emt 0:00:51]} Bc5 {[%emt 0:09:02]} 16. Qd2 {[%emt 0:05:13]}
dxe4 {[%emt 0:02:16]} 17. g5 {[%emt 0:07:11]} e3 {[%emt 0:01:22]} 18. Qe2 {
[%emt 0:07:19]} Ng4 {[%emt 0:10:35]} 19. Rg1 {[%emt 0:08:46]} Ne5 {[%emt 0:13:
12]} 20. Rg3 {[%emt 0:01:19]} O-O {[%emt 0:04:14]} 21. Bxe3 {[%emt 0:03:29]}
Bxe3 {[%emt 0:00:05]} 22. Qxe3 {[%emt 0:00:03]} Rfd8 {[%emt 0:00:03]} 23. Re1 {
[%emt 0:02:59]} Ng6 {[%emt 0:00:34]} 24. Bd3 {[%emt 0:04:24]} Nf4 {[%emt 0:02:
10]} 25. Be4 {[%emt 0:00:38]} Rab8 {[%emt 0:00:14]} 26. Rgg1 {[%emt 0:12:08]}
Bxe4 {[%emt 0:02:32]} 27. Nxe4 {[%emt 0:01:06]} Nd5 {[%emt 0:00:17]} 28. Qc1 {
[%emt 0:02:20]} Qxh2 {[%emt 0:01:40]} 29. Rd1 {[%emt 0:02:48]} Qe2 {[%emt 0:05:
22]} 30. Rd3 {[%emt 0:02:43]} Nb4 {[%emt 0:04:00]} 31. Re3 {[%emt 0:00:35]} Qc4
{[%emt 0:01:12]} 32. b3 {[%emt 0:00:10]} Qc7 {[%emt 0:00:52]} 33. Rc3 {[%emt 0:
03:09]} Qe5 {[%emt 0:01:29]} 34. Re1 {[%emt 0:02:08]} Qa5 {[%emt 0:04:34]} 35.
a3 {[%emt 0:00:17]} Nd5 {[%emt 0:00:06]} 36. Rd3 {[%emt 0:04:17]} Rdc8 {
[%emt 0:04:19]} 37. Red1 {[%emt 0:04:15]} Nc3+ {[%emt 0:03:32]} 38. Rxc3 {
[%emt 0:00:00]} Rxc3 {[%emt 0:00:02]} 39. Qd2 {[%emt 0:00:00]} Rc5 {[%emt 0:00:
24]} 40. Nxc5 {[%emt 0:00:00]} Qxc5 {[%emt 0:00:01]} 41. Kb2 {[%emt 0:10:39]}
Rc8 {[%emt 0:07:32]} 42. f4 {[%emt 0:04:01]} g6 {[%emt 0:03:41]} 43. Re1 {
[%emt 0:07:11]} Qf8 {[%emt 0:01:19]} 44. Qa5 {[%emt 0:07:29]} Qd6 {[%emt 0:01:
51]} 45. Qb4 {[%emt 0:04:21]} Rc5 {[%emt 0:08:57]} 46. Re5 {[%emt 0:06:23]} Rc6
{[%emt 0:00:28]} 47. Qxd6 {[%emt 0:00:25]} Rxd6 {[%emt 0:00:05]} 48. c4 {
[%emt 0:00:20]} f6 {[%emt 0:02:24]} 49. c5 {[%emt 0:02:51]} Rc6 {[%emt 0:01:26]
} 50. gxf6 {[%emt 0:00:05]} Kf7 {[%emt 0:00:08]} 51. b4 {[%emt 0:00:53]} h5 {
[%emt 0:00:23]} 52. a4 {[%emt 0:02:38]} Rc8 {[%emt 0:00:31]} 53. b5 {[%emt 0:
00:39]} axb5 {[%emt 0:01:56]} 54. axb5 {[%emt 0:00:03]} Kxf6 {[%emt 0:00:53]}
55. Kc3 {[%emt 0:02:12]} Rh8 {[%emt 0:01:59]} 56. b6 {[%emt 0:01:44]} h4 {
[%emt 0:00:39]} 57. Kc4 {[%emt 0:01:31]} h3 {[%emt 0:00:22]} 58. Re1 {[%emt 0:
01:12]} Ke7 {[%emt 0:01:20]} 59. Kb5 {[%emt 0:01:14]} h2 {[%emt 0:00:26]} 60.
Rh1 {[%emt 0:00:35]} Kd7 {[%emt 0:03:26]} 61. c6+ {[%emt 0:01:09]} Kc8 {
[%emt 0:00:14]} 62. Ka6 {[%emt 0:01:59]} Rh3 {[%emt 0:00:31]} 63. Kb5 {[%emt 0:
10:48]} Rb3+ {[%emt 0:11:19]} 64. Kc5 {[%emt 0:00:02]} Rc3+ {[%emt 0:00:27]}
65. Kd6 {[%emt 0:00:02]} Rd3+ {[%emt 0:00:09]} 66. Kxe6 {[%emt 0:01:54]} Rc3 {
[%emt 0:00:05]} 67. Kd6 {[%emt 0:00:11]} Rd3+ {[%emt 0:00:13]} 68. Ke6 {
[%emt 0:00:08]} Rc3 {[%emt 0:00:05]} 69. Kd5 {[%emt 0:00:05]} Rc2 {[%emt 0:00:
51]} 70. Kd6 {[%emt 0:03:28]} Rd2+ {[%emt 0:01:02]} 71. Ke7 {[%emt 0:00:36]}
Rc2 {[%emt 0:00:44]} 72. Kf7 {[%emt 0:00:46]} Rxc6 {[%emt 0:01:17]} 73. Rxh2 {
[%emt 0:00:05]} Rxb6 {[%emt 0:00:09]} 74. Rh6 {[%emt 0:00:20]} Rb4 {[%emt 0:00:
56]} 75. Rh4 {[%emt 0:00:04]} Kd7 {[%emt 0:01:20]} 76. Kxg6 {[%emt 0:00:37]}
Ke7 {[%emt 0:00:08]} 77. Rh7+ {[%emt 0:01:16]} Kf8 {[%emt 0:00:08]} 78. f5 {
[%emt 0:00:26]} Rg4+ {[%emt 0:01:14]} 79. Kf6 {[%emt 0:00:01]} Kg8 {[%emt 0:00:
05]} 80. Ra7 {[%emt 0:00:55]} Rb4 {[%emt 0:00:59]} 81. Ra8+ {[%emt 0:00:29]}
Kh7 {[%emt 0:00:02]} 82. Re8 {[%emt 0:00:20]} Rf4 {[%emt 0:04:19]} 83. Rf8 {
[%emt 0:00:55]} Ra4 {[%emt 0:00:52]} 84. Re8 {[%emt 0:00:30]} Rf4 {[%emt 0:00:
22]} 85. Re5 {[%emt 0:00:22]} Kg8 {[%emt 0:00:13]} 86. Re1 {[%emt 0:00:40]} Rf2
{[%emt 0:03:05]} 87. Rg1+ {[%emt 0:00:20]} Kf8 {[%emt 0:00:02]} 88. Rb1 {
[%emt 0:00:18]} Kg8 {[%emt 0:00:01]} 89. Rb5 {[%emt 0:00:47]} Rf1 {[%emt 0:01:
42]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.47"]
[White "Mamedov, Rauf"]
[Black "Movsesian, Sergei"]
[Result "1/2-1/2"]
[ECO "C68"]
[WhiteElo "2673"]
[BlackElo "2627"]
[Annotator "TA"]
[PlyCount "30"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,29,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bg4 6. h3
h5 7. c3 Qd3 8. hxg4 hxg4 9. Nxe5 Bd6 10. Nxd3 Bh2+ 11. Kh1 Bg3+ 12. Kg1 Bh2+
13. Kh1 Bg3+ 14. Kg1 Bh2+ 15. Kh1 {[#]} {Predecessor:} Bd6+ $146 {C68: Ruy
Lopez: Exchange Variation, sidelines.} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.48"]
[White "Adhiban, B.."]
[Black "Miezis, Normunds"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2672"]
[BlackElo "2467"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,119,0,0,1,0,11,-14,-8,0,0,-16,-22,-27,-24,-28,-20,-30,-8,-18,0,0,0,0,
0,0,0,0,0,-3,30,0,0,-7,26,12,49,38,44,16,32,39,49,43,37,41,43,34,45,45,72,60,
52,8,90,28,77,72,94,104,137,131,241,132,124,124,118,118,207,73,314,308,438,420,
438,433,454,422,414,340,358,354,478,477,680,674,625,637,644,644,629,619,687,
687,680,680,672,672,623,600,687,665,641,639,584,494,1194,1181]} 1. b3 e5 2. Bb2
d6 3. c4 c5 4. g3 Nc6 5. Bg2 g6 6. Nc3 Bg7 7. d3 Nge7 8. Nf3 Rb8 {A36:
Symmetrical English vs ...g6: 4 Bg2 Bg7.} 9. O-O O-O 10. a3 $5 {[%mdl 4]
Exploring less charted territory.} a6 {The position is equal.} 11. e3 b5 12.
Qc2 {[#]} b4 $146 ({Predecessor:} 12... h6 13. Nd2 Be6 14. Nd5 Qd7 15. Rfe1 f5
{1/2-1/2 (15) Bischoff,K (2504)-Rambaldi,F (2555) Porto Mannu 2017}) 13. axb4
Nxb4 14. Qe2 Bb7 15. Rfd1 Qc7 16. Ba3 Rfe8 17. Nd2 Bxg2 18. Kxg2 Qb7+ 19. Kg1
Nbc6 {[%cal Bb4c6,Bc6d8,Bd8f7,Bf7g5,Bg5f3][%mdl 32]} 20. Nd5 f5 21. Bb2 Nd8 22.
Nxe7+ Rxe7 23. Qf1 Nf7 24. Ra3 Qc6 25. Rda1 Rb6 26. R1a2 h5 27. Bc3 Ng5 28. Qg2
e4 29. Bxg7 Rxg7 30. dxe4 fxe4 31. h4 Nf3+ 32. Nxf3 exf3 33. Qh3 Re7 (33... Qb7
$1 $11) 34. Rd2 (34. Kh2 $16) 34... Kg7 35. Qf1 Kh7 36. Rd5 Rf7 37. Kh2 Rf5 (
37... Qd7 $16 {was called for.}) 38. Qd1 (38. Rxf5 $18 gxf5 39. Qa1) 38... Qd7
$16 39. Rd3 Qe7 40. Ra2 g5 {[#]} (40... Rf6 $16 41. Qa1 Qe5) 41. hxg5 (41. Rd5
$1 $18 {[%cal Rd5f5] and the rest is easy.} Rxd5 42. Qxd5) 41... h4 $2 {
Black cannot hold the game after this.} (41... Qxg5 $16 42. e4 (42. Rxd6 h4 $11
) 42... Rf6) 42. g4 $18 ({Inferior is} 42. gxh4 Qe5+ 43. Kh3 Qe6 $11) 42...
Qxg5 (42... Rxg5 {was worth a try.} 43. Qxf3 Kg7) 43. Kh3 Qg6 {Black hopes to
continue with ...Rg5.} 44. Rad2 ({Avoid the trap} 44. gxf5 $2 Qg2+ 45. Kxh4 d5
$19) 44... Rf6 45. Rd5 Rb7 46. Kxh4 {[#] And now Rg5 would win.} Rg7 {[%csl
Gg7][%cal Rg6g4]} 47. Qc2 Re6 {Hoping for ...Re4!} 48. Qxg6+ {White is clearly
winning.} Rgxg6 {[%mdl 4096] Endgame KRR-KRR} (48... Rexg6 $142 49. g5 (49.
Rxd6 Rxg4+ 50. Kh3 Rg1 $16) 49... a5) 49. Rh5+ Kg7 50. Rg5 Rxg5 51. Kxg5 {KR-KR
} Kf7 52. Ra2 Rg6+ 53. Kf4 Rf6+ 54. Kg3 Ke6 55. Rxa6 Ke5 56. Ra2 Ke4 57. Rd2
Rh6 {and the idea ...Rh1 leaves Black hopeful.} 58. Rd1 Rg6 59. b4 {[%cal
Bb3b4,Bb4b5][%mdl 32]} Rf6 (59... cxb4 $142 60. Rb1 Kd3 61. Rxb4 Kc3) 60. b5 {
Weighted Error Value: White=0.10/Black=0.36} 1-0

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.49"]
[White "Paravyan, David"]
[Black "Bjerre, Jonas Buhl"]
[Result "1/2-1/2"]
[ECO "B94"]
[WhiteElo "2642"]
[BlackElo "2569"]
[Annotator "RC"]
[PlyCount "103"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:05]} c5 {[%emt 0:00:08]} 2. Nf3 {[%emt 0:00:03]} d6 {[%emt 0:
00:07]} 3. d4 {[%emt 0:00:05]} cxd4 {[%emt 0:00:04]} 4. Nxd4 {[%emt 0:00:03]}
Nf6 {[%emt 0:00:06]} 5. Nc3 {[%emt 0:00:02]} a6 {[%emt 0:00:06]} 6. Bg5 {
[%emt 0:00:03]} Nbd7 {[%emt 0:00:10]} 7. a3 {[%emt 0:00:04]} Qc7 {[%emt 0:06:
09]} 8. Qd2 {[%emt 0:00:10]} e6 {[%emt 0:02:13]} 9. O-O-O {[%emt 0:15:06]} Be7
{[%emt 0:02:24]} 10. f4 {[%emt 0:13:11]} h6 {[%emt 0:05:11]} 11. Bxf6 {[%emt 0:
00:05]} Bxf6 {[%emt 0:02:29]} 12. h4 {[%emt 0:19:19]} Nc5 {[%emt 0:05:01]} 13.
g4 {[%emt 0:03:56]} Bd7 {[%emt 0:04:41]} 14. Bg2 {[%emt 0:12:49]} Na4 {[%emt 0:
08:25]} 15. Nxa4 {[%emt 0:00:30]} Bxa4 {[%emt 0:00:06]} 16. Qb4 {[%emt 0:00:13]
} Bd7 {[%emt 0:02:46]} 17. g5 {[%emt 0:02:38]} Be7 {[%emt 0:01:45]} 18. Qb3 {
[%emt 0:14:40]} Rc8 {[%emt 0:07:21]} 19. Kb1 {[%emt 0:08:43]} b5 {[%emt 0:02:
45]} 20. g6 {[%emt 0:01:23]} O-O {[%emt 0:05:53]} 21. Bh3 {[%emt 0:03:43]} Qc4
{[%emt 0:05:37]} 22. gxf7+ {[%emt 0:00:19]} Rxf7 {[%emt 0:01:32]} 23. Nxe6 {
[%emt 0:03:51]} Rf6 {[%emt 0:13:42]} 24. Ng5 {[%emt 0:03:48]} Qxb3 {[%emt 0:03:
04]} 25. cxb3 {[%emt 0:00:06]} Bxh3 {[%emt 0:00:28]} 26. Nxh3 {[%emt 0:00:05]}
Rg6 {[%emt 0:00:54]} 27. Rdg1 {[%emt 0:06:01]} Re6 {[%emt 0:03:04]} 28. Nf2 {
[%emt 0:00:06]} Rf8 {[%emt 0:01:01]} 29. f5 {[%emt 0:00:04]} Re5 {[%emt 0:00:
04]} 30. Rg6 {[%emt 0:03:45]} Rf6 {[%emt 0:04:46]} 31. h5 {[%emt 0:00:32]} d5 {
[%emt 0:02:57]} 32. Ng4 {[%emt 0:00:16]} Rxg6 {[%emt 0:00:08]} 33. Nxe5 {
[%emt 0:00:04]} Rf6 {[%emt 0:03:45]} 34. Ng6 {[%emt 0:00:32]} Kf7 {[%emt 0:02:
43]} 35. Rd1 {[%emt 0:01:08]} dxe4 {[%emt 0:00:51]} 36. Rd7 {[%emt 0:00:03]}
Rxf5 {[%emt 0:00:12]} 37. Rxe7+ {[%emt 0:00:35]} Kf6 {[%emt 0:00:04]} 38. Rxe4
{[%emt 0:00:51]} Rxh5 {[%emt 0:00:03]} 39. Nf8 {[%emt 0:00:30]} g5 {[%emt 0:07:
24]} 40. a4 {[%emt 0:00:28]} Kf5 {[%emt 0:05:22]} 41. Re1 {[%emt 0:12:12]} g4 {
[%emt 0:04:23]} 42. Ne6 {[%emt 0:14:30]} Rh2 {[%emt 0:06:35]} 43. Nd4+ {
[%emt 0:00:16]} Kf4 {[%emt 0:00:25]} 44. Rf1+ {[%emt 0:05:06]} Ke4 {[%emt 0:09:
28]} 45. axb5 {[%emt 0:00:45]} axb5 {[%emt 0:05:49]} 46. Nxb5 {[%emt 0:00:17]}
g3 {[%emt 0:01:57]} 47. Nd6+ {[%emt 0:01:03]} Ke5 {[%emt 0:03:24]} 48. Nc4+ {
[%emt 0:00:25]} Ke4 {[%emt 0:00:28]} 49. Ka2 {[%emt 0:06:38]} g2 {[%emt 0:03:
34]} 50. Re1+ {[%emt 0:00:03]} Kf3 {[%emt 0:02:50]} 51. Ne3 {[%emt 0:00:42]} h5
{[%emt 0:01:39]} 52. Nxg2 {[%emt 0:02:29]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.50"]
[White "Kravtsiv, Martyn"]
[Black "Abasov, Nijat"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2625"]
[BlackElo "2638"]
[Annotator "RC"]
[PlyCount "28"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:03]} Nf6 {[%emt 0:00:07]} 2. c4 {[%emt 0:00:07]} e6 {[%emt 0:
00:09]} 3. Nf3 {[%emt 0:00:12]} d5 {[%emt 0:00:08]} 4. g3 {[%emt 0:00:12]} Be7
{[%emt 0:00:26]} 5. Bg2 {[%emt 0:01:59]} O-O {[%emt 0:00:21]} 6. O-O {[%emt 0:
00:12]} dxc4 {[%emt 0:00:09]} 7. Qc2 {[%emt 0:00:27]} a6 {[%emt 0:00:12]} 8.
Qxc4 {[%emt 0:13:49]} b5 {[%emt 0:04:00]} 9. Qc2 {[%emt 0:00:07]} Bb7 {[%emt 0:
00:18]} 10. Bd2 {[%emt 0:00:25]} Be4 {[%emt 0:03:27]} 11. Qc1 {[%emt 0:00:08]}
Bb7 {[%emt 0:02:02]} 12. Qc2 {[%emt 0:00:08]} Be4 {[%emt 0:00:08]} 13. Qc1 {
[%emt 0:00:04]} Bb7 {[%emt 0:00:11]} 14. Qc2 {[%emt 0:00:04]} Be4 {[%emt 0:00:
41]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.51"]
[White "Neiksans, Arturs"]
[Black "Dreev, Aleksey"]
[Result "1/2-1/2"]
[ECO "E14"]
[WhiteElo "2570"]
[BlackElo "2635"]
[Annotator "RC"]
[PlyCount "35"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:03]} d5 {[%emt 0:00:14]} 2. Nf3 {[%emt 0:00:05]} Nf6 {
[%emt 0:00:07]} 3. c4 {[%emt 0:00:05]} e6 {[%emt 0:00:31]} 4. e3 {[%emt 0:00:
22]} b6 {[%emt 0:01:02]} 5. Nc3 {[%emt 0:03:17]} Bd6 {[%emt 0:00:31]} 6. cxd5 {
[%emt 0:08:44]} exd5 {[%emt 0:00:17]} 7. Bd3 {[%emt 0:00:11]} O-O {[%emt 0:05:
31]} 8. O-O {[%emt 0:01:14]} Bb7 {[%emt 0:03:43]} 9. b3 {[%emt 0:03:28]} a6 {
[%emt 0:07:29]} 10. Bb2 {[%emt 0:02:45]} Nbd7 {[%emt 0:00:44]} 11. Ne2 {
[%emt 0:02:31]} Ne4 {[%emt 0:13:39]} 12. Ng3 {[%emt 0:01:01]} Re8 {[%emt 0:02:
51]} 13. Rc1 {[%emt 0:03:26]} g6 {[%emt 0:00:39]} 14. Qc2 {[%emt 0:05:23]} Rc8
{[%emt 0:05:09]} 15. Qe2 {[%emt 0:06:33]} Ra8 {[%emt 0:01:43]} 16. Qc2 {
[%emt 0:03:43]} Rc8 {[%emt 0:01:47]} 17. Qe2 {[%emt 0:02:17]} Ra8 {[%emt 0:00:
15]} 18. Qc2 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.52"]
[White "Morovic Fernandez, Ivan"]
[Black "Georgiev, Kiril"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2510"]
[BlackElo "2577"]
[Annotator "RC"]
[PlyCount "82"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:04]} e5 {[%emt 0:00:31]} 2. Nf3 {[%emt 0:00:07]} Nc6 {
[%emt 0:00:09]} 3. Bb5 {[%emt 0:00:19]} Nf6 {[%emt 0:00:20]} 4. O-O {[%emt 0:
00:43]} Nxe4 {[%emt 0:00:08]} 5. Re1 {[%emt 0:00:35]} Nd6 {[%emt 0:00:10]} 6.
Nxe5 {[%emt 0:00:07]} Be7 {[%emt 0:00:13]} 7. Bf1 {[%emt 0:00:30]} Nxe5 {
[%emt 0:00:26]} 8. Rxe5 {[%emt 0:00:03]} O-O {[%emt 0:00:15]} 9. Nc3 {[%emt 0:
03:03]} Ne8 {[%emt 0:04:16]} 10. Nd5 {[%emt 0:00:39]} Bd6 {[%emt 0:00:28]} 11.
Re1 {[%emt 0:01:30]} c6 {[%emt 0:01:49]} 12. Ne3 {[%emt 0:00:20]} Be7 {[%emt 0:
00:30]} 13. Nf5 {[%emt 0:08:58]} Bf6 {[%emt 0:01:35]} 14. Qe2 {[%emt 0:01:12]}
d5 {[%emt 0:01:17]} 15. Ne7+ {[%emt 0:00:14]} Kh8 {[%emt 0:00:16]} 16. Nxc8 {
[%emt 0:00:10]} Rxc8 {[%emt 0:00:11]} 17. d3 {[%emt 0:09:34]} Nd6 {[%emt 0:00:
34]} 18. Qd1 {[%emt 0:21:15]} Bg5 {[%emt 0:04:13]} 19. Qg4 {[%emt 0:12:08]}
Bxc1 {[%emt 0:01:26]} 20. Raxc1 {[%emt 0:00:07]} Qa5 {[%emt 0:07:28]} 21. Qf4 {
[%emt 0:02:06]} Rcd8 {[%emt 0:01:04]} 22. a3 {[%emt 0:01:41]} Qb6 {[%emt 0:04:
36]} 23. b4 {[%emt 0:08:19]} Qc7 {[%emt 0:12:02]} 24. c4 {[%emt 0:01:58]} dxc4
{[%emt 0:10:59]} 25. dxc4 {[%emt 0:00:10]} Rd7 {[%emt 0:00:11]} 26. Rcd1 {
[%emt 0:03:05]} Nc8 {[%emt 0:00:34]} 27. Qf5 {[%emt 0:03:44]} Rdd8 {[%emt 0:03:
33]} 28. Bd3 {[%emt 0:10:46]} g6 {[%emt 0:00:12]} 29. Qf6+ {[%emt 0:00:02]} Kg8
{[%emt 0:00:08]} 30. c5 {[%emt 0:00:10]} Rd5 {[%emt 0:04:35]} 31. Bc4 {[%emt 0:
03:39]} Rf5 {[%emt 0:01:24]} 32. Qd4 {[%emt 0:04:47]} b6 {[%emt 0:01:01]} 33.
g3 {[%emt 0:05:26]} a5 {[%emt 0:02:30]} 34. h4 {[%emt 0:01:42]} axb4 {[%emt 0:
01:06]} 35. axb4 {[%emt 0:00:02]} bxc5 {[%emt 0:01:54]} 36. bxc5 {[%emt 0:00:
25]} Na7 {[%emt 0:07:23]} 37. Qd6 {[%emt 0:04:26]} Qxd6 {[%emt 0:02:13]} 38.
cxd6 {[%emt 0:00:06]} Rd8 {[%emt 0:00:21]} 39. d7 {[%emt 0:04:01]} Kf8 {
[%emt 0:00:40]} 40. Rd6 {[%emt 0:00:56]} Rc5 {[%emt 0:01:21]} 41. Re4 {[%emt 0:
20:45]} Nb5 {[%emt 0:02:45]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.53"]
[White "Rakotomaharo, Fy Antenaina"]
[Black "Meshkovs, Nikita"]
[Result "1/2-1/2"]
[ECO "C70"]
[WhiteElo "2484"]
[BlackElo "2550"]
[Annotator "ChessBase"]
[PlyCount "175"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. e4 {[%emt 0:00:02]} e5 {[%emt 0:00:05]} 2. Nf3 {[%emt 0:00:05]} Nc6 {
[%emt 0:00:04]} 3. Bb5 {[%emt 0:00:41]} a6 {[%emt 0:00:11]} 4. Ba4 {[%emt 0:00:
05]} Nge7 {[%emt 0:00:04]} 5. c3 {[%emt 0:01:13]} g6 {[%emt 0:00:39]} 6. d4 {
[%emt 0:01:14]} exd4 {[%emt 0:00:05]} 7. cxd4 {[%emt 0:00:04]} b5 {[%emt 0:00:
04]} 8. Bb3 {[%emt 0:00:10]} Bg7 {[%emt 0:00:19]} 9. O-O {[%emt 0:00:37]} O-O {
[%emt 0:01:13]} 10. a4 {[%emt 0:02:02]} d5 {[%emt 0:09:41]} 11. exd5 {[%emt 0:
09:51]} bxa4 {[%emt 0:01:42]} 12. Rxa4 {[%emt 0:02:34]} Nxd5 {[%emt 0:00:31]}
13. Bg5 {[%emt 0:00:27]} Qd7 {[%emt 0:02:43]} 14. Nc3 {[%emt 0:29:18]} Nxc3 {
[%emt 0:33:03]} 15. bxc3 {[%emt 0:00:17]} a5 {[%emt 0:00:01]} 16. Re1 {[%emt 0:
13:45]} Re8 {[%emt 0:00:52]} 17. Rxe8+ {[%emt 0:04:07]} Qxe8 {[%emt 0:00:02]}
18. Bf4 {[%emt 0:00:19]} Ra7 {[%emt 0:07:00]} 19. h3 {[%emt 0:11:50]} Nd8 {
[%emt 0:03:53]} 20. Qa1 {[%emt 0:06:10]} Qb5 {[%emt 0:18:08]} 21. Qa3 {[%emt 0:
12:41]} Bf8 {[%emt 0:04:55]} 22. Qa2 {[%emt 0:00:33]} Qf5 {[%emt 0:08:09]} 23.
Be5 {[%emt 0:07:40]} Nb7 {[%emt 0:05:53]} 24. Bd5 {[%emt 0:01:34]} Qd7 {
[%emt 0:09:10]} 25. Ng5 {[%emt 0:01:32]} Nd8 {[%emt 0:00:05]} 26. Rxa5 {
[%emt 0:01:19]} Rxa5 {[%emt 0:00:06]} 27. Qxa5 {[%emt 0:00:04]} Be7 {[%emt 0:
00:03]} 28. Ne4 {[%emt 0:01:43]} c5 {[%emt 0:00:01]} 29. Qa2 {[%emt 0:01:17]}
cxd4 {[%emt 0:05:07]} 30. cxd4 {[%emt 0:00:15]} Kf8 {[%emt 0:00:22]} 31. Nf6 {
[%emt 0:01:13]} Qf5 {[%emt 0:00:53]} 32. Be4 {[%emt 0:00:48]} Qe6 {[%emt 0:00:
49]} 33. Nxh7+ {[%emt 0:00:33]} Kg8 {[%emt 0:00:24]} 34. Nf6+ {[%emt 0:00:20]}
Bxf6 {[%emt 0:00:34]} 35. Qxe6 {[%emt 0:00:07]} Nxe6 {[%emt 0:00:01]} 36. Bxf6
{[%emt 0:00:07]} Nf4 {[%emt 0:00:01]} 37. f3 {[%emt 0:01:36]} Be6 {[%emt 0:01:
01]} 38. Be5 {[%emt 0:00:31]} Nd5 {[%emt 0:00:37]} 39. g4 {[%emt 0:00:13]} f6 {
[%emt 0:00:10]} 40. Bd6 {[%emt 0:00:53]} f5 {[%emt 0:01:16]} 41. Bd3 {[%emt 0:
02:10]} Kf7 {[%emt 0:06:16]} 42. Kf2 {[%emt 0:01:21]} fxg4 {[%emt 0:03:34]} 43.
fxg4 {[%emt 0:01:08]} g5 {[%emt 0:00:06]} 44. Kg3 {[%emt 0:03:08]} Ne3 {
[%emt 0:05:06]} 45. Be2 {[%emt 0:01:21]} Bd5 {[%emt 0:02:34]} 46. h4 {[%emt 0:
04:01]} Ke6 {[%emt 0:00:03]} 47. Bc7 {[%emt 0:03:53]} gxh4+ {[%emt 0:00:55]}
48. Kxh4 {[%emt 0:00:06]} Be4 {[%emt 0:00:02]} 49. Ba6 {[%emt 0:02:46]} Kd5 {
[%emt 0:09:04]} 50. Be5 {[%emt 0:02:47]} Bf5 {[%emt 0:06:23]} 51. Bb7+ {
[%emt 0:01:31]} Kc4 {[%emt 0:00:13]} 52. g5 {[%emt 0:26:22]} Bg6 {[%emt 0:00:
53]} 53. Bc8 {[%emt 0:00:58]} Nf5+ {[%emt 0:08:43]} 54. Bxf5 {[%emt 0:01:06]}
Bxf5 {[%emt 0:00:01]} 55. Kh5 {[%emt 0:00:07]} Kd5 {[%emt 0:01:46]} 56. g6 {
[%emt 0:02:36]} Ke6 {[%emt 0:00:54]} 57. Kg5 {[%emt 0:00:12]} Be4 {[%emt 0:01:
09]} 58. Bf6 {[%emt 0:00:50]} Bd5 {[%emt 0:03:12]} 59. Bd8 {[%emt 0:00:21]} Kd7
{[%emt 0:03:14]} 60. Ba5 {[%emt 0:00:20]} Ke7 {[%emt 0:03:23]} 61. Kf5 {
[%emt 0:15:52]} Bb3 {[%emt 0:05:41]} 62. Bb4+ {[%emt 0:00:00]} Kd7 {[%emt 0:03:
31]} 63. Kf6 {[%emt 0:00:00]} Ke8 {[%emt 0:00:41]} 64. Bd2 {[%emt 0:00:00]} Bc4
{[%emt 0:00:09]} 65. Bh6 {[%emt 0:00:00]} Bb3 {[%emt 0:00:27]} 66. Bf4 {
[%emt 0:00:00]} Bc4 {[%emt 0:00:16]} 67. Kg7 {[%emt 0:00:00]} Bd3 {[%emt 0:00:
16]} 68. Bd6 {[%emt 0:00:00]} Bc2 {[%emt 0:00:18]} 69. Bb4 {[%emt 0:00:00]} Bd3
{[%emt 0:00:05]} 70. Kh6 {[%emt 0:00:00]} Bc4 {[%emt 0:00:11]} 71. Kh7 {
[%emt 0:01:57]} Bd3 {[%emt 0:00:03]} 72. Kg7 {[%emt 0:00:04]} Bc2 {[%emt 0:00:
38]} 73. Kf6 {[%emt 0:00:02]} Bb3 {[%emt 0:00:31]} 74. Ke5 {[%emt 0:00:06]} Kd7
{[%emt 0:00:42]} 75. Bd2 {[%emt 0:00:07]} Bc4 {[%emt 0:00:23]} 76. Bf4 {
[%emt 0:00:52]} Bb3 {[%emt 0:00:33]} 77. Bg3 {[%emt 0:04:25]} Bc4 {[%emt 0:00:
33]} 78. Kf5 {[%emt 0:00:22]} Bb3 {[%emt 0:00:31]} 79. Be5 {[%emt 0:00:26]} Bc4
{[%emt 0:00:25]} 80. Kg5 {[%emt 0:00:19]} Ke8 {[%emt 0:00:52]} 81. Bf6 {
[%emt 0:00:14]} Bb3 {[%emt 0:00:28]} 82. Kf4 {[%emt 0:00:33]} Bc2 {[%emt 0:00:
18]} 83. g7 {[%emt 0:00:36]} Bh7 {[%emt 0:00:51]} 84. Ke5 {[%emt 0:00:36]} Kd7
{[%emt 0:00:09]} 85. Bh4 {[%emt 0:01:52]} Bg8 {[%emt 0:00:05]} 86. Bg3 {
[%emt 0:00:14]} Bf7 {[%emt 0:00:20]} 87. Kf6 {[%emt 0:00:20]} Bg8 {[%emt 0:00:
03]} 88. Bh2 {[%emt 0:00:15]} 1/2-1/2

[Event "FIDE Chesscom Grand Swiss 2021"]
[Site "Riga"]
[Date "2021.11.07"]
[Round "11.54"]
[White "Budisavljevic, Luka"]
[Black "Van Foreest, Lucas"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "2508"]
[BlackElo "2543"]
[Annotator "RC"]
[PlyCount "101"]
[EventDate "2021.10.27"]
[EventType "swiss"]
[EventCountry "LAT"]
[Tiebreak "Cut1 Buchholz+Sonneborn-Berger (Swiss)"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/6000+30:20/3000+30:900+30"]

1. d4 {[%emt 0:00:15]} Nf6 {[%emt 0:00:12]} 2. c4 {[%emt 0:00:18]} e6 {[%emt 0:
00:07]} 3. Nc3 {[%emt 0:00:22]} Bb4 {[%emt 0:00:05]} 4. Qc2 {[%emt 0:00:08]}
O-O {[%emt 0:00:09]} 5. e4 {[%emt 0:00:14]} d5 {[%emt 0:00:34]} 6. e5 {[%emt 0:
00:06]} Ne4 {[%emt 0:00:03]} 7. Bd3 {[%emt 0:00:04]} c5 {[%emt 0:00:11]} 8. Nf3
{[%emt 0:00:11]} cxd4 {[%emt 0:00:10]} 9. Nxd4 {[%emt 0:00:06]} Nd7 {[%emt 0:
00:10]} 10. Bf4 {[%emt 0:00:06]} Qh4 {[%emt 0:00:15]} 11. g3 {[%emt 0:00:29]}
Qh5 {[%emt 0:00:07]} 12. O-O {[%emt 0:00:07]} g5 {[%emt 0:04:21]} 13. cxd5 {
[%emt 0:00:04]} Bxc3 {[%emt 0:10:42]} 14. bxc3 {[%emt 0:00:15]} exd5 {[%emt 0:
00:08]} 15. Be3 {[%emt 0:00:35]} Nxe5 {[%emt 0:00:09]} 16. f3 {[%emt 0:10:19]}
Nc5 {[%emt 0:00:37]} 17. Bf5 {[%emt 0:06:04]} f6 {[%emt 0:01:39]} 18. Rad1 {
[%emt 0:06:39]} b6 {[%emt 0:20:26]} 19. Kg2 {[%emt 0:14:36]} g4 {[%emt 0:03:18]
} 20. fxg4 {[%emt 0:01:49]} Nxg4 {[%emt 0:01:53]} 21. Bg1 {[%emt 0:00:13]} Re8
{[%emt 0:03:00]} 22. Rf4 {[%emt 0:15:52]} Ne3+ {[%emt 0:10:05]} 23. Bxe3 {
[%emt 0:00:05]} Rxe3 {[%emt 0:00:05]} 24. Bxc8 {[%emt 0:14:46]} Rxc8 {[%emt 0:
07:12]} 25. Rh4 {[%emt 0:02:27]} Qg6 {[%emt 0:04:06]} 26. Nf5 {[%emt 0:00:52]}
Rce8 {[%emt 0:00:34]} 27. Nxe3 {[%emt 0:00:52]} Qxc2+ {[%emt 0:00:07]} 28. Nxc2
{[%emt 0:00:03]} Re2+ {[%emt 0:00:03]} 29. Kf1 {[%emt 0:10:27]} Rxc2 {[%emt 0:
00:03]} 30. Rxd5 {[%emt 0:00:07]} Rxc3 {[%emt 0:00:52]} 31. a4 {[%emt 0:02:13]}
Ra3 {[%emt 0:01:44]} 32. Rg4+ {[%emt 0:02:51]} Kf7 {[%emt 0:00:53]} 33. Rh5 {
[%emt 0:00:06]} Ra1+ {[%emt 0:00:11]} 34. Kf2 {[%emt 0:01:45]} a5 {[%emt 0:02:
32]} 35. Rxh7+ {[%emt 0:00:30]} Ke6 {[%emt 0:00:02]} 36. Rhh4 {[%emt 0:03:26]}
Ke5 {[%emt 0:00:58]} 37. Ke2 {[%emt 0:04:26]} f5 {[%emt 0:01:45]} 38. Rc4 {
[%emt 0:02:42]} Ra2+ {[%emt 0:00:36]} 39. Kd1 {[%emt 0:02:01]} Ne4 {[%emt 0:01:
05]} 40. Rh5 {[%emt 0:03:54]} Nf6 {[%emt 0:06:33]} 41. Rh8 {[%emt 0:55:12]} Ng4
{[%emt 0:51:00]} 42. Kc1 {[%emt 0:00:00]} Nxh2 {[%emt 0:00:00]} 43. Re8+ {
[%emt 0:00:00]} Kd5 {[%emt 0:00:00]} 44. Rf4 {[%emt 0:00:00]} Kc6 {[%emt 0:00:
00]} 45. Rc8+ {[%emt 0:00:00]} Kd7 {[%emt 0:00:00]} 46. Rc2 {[%emt 0:00:00]}
Rxc2+ {[%emt 0:00:00]} 47. Kxc2 {[%emt 0:00:00]} Ng4 {[%emt 0:00:00]} 48. Kc3 {
[%emt 0:00:00]} Ke6 {[%emt 0:00:00]} 49. Kc4 {[%emt 0:00:00]} Ne3+ {[%emt 0:00:
00]} 50. Kb5 {[%emt 0:00:00]} Nd5 {[%emt 0:00:00]} 51. Kc6 {[%emt 0:00:00]} 1-0

