[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "1.1"]
[White "Dominguez Perez, Leinier"]
[Black "Duda, Jan-Krzysztof"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2758"]
[BlackElo "2738"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,125,45,0,29,15,16,14,46,-25,25,-22,-25,-14,-25,-16,-10,-18,-3,-27,
-39,-80,-51,-52,-42,-76,-39,-106,-20,-108,-108,-127,-95,-109,-82,-99,-90,-159,
-67,-95,-93,-127,-30,-36,-44,-35,0,0,0,0,0,0,226,226,214,218,218,218,341,343,
327,318,336,321,353,330,319,268,404,404,382,390,382,369,375,364,337,200,205,
203,195,136,159,159,213,207,308,301,287,198,202,192,775,749,792,477,1538,1415,
937,864,5398,5310,29964,4141,29978,29979,29979,29980,29984,29983,29986,29982,
29996,29997,29997,29998]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6
6. Be3 Ng4 7. Bc1 Nc6 {B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3
Ng4 and 6 Be3 e5.} 8. Be2 {aiming for Nxc6.} Qb6 9. Bxg4 Qxd4 {The position is
equal.} 10. Qe2 $5 {[%mdl 4] [#] Exploring less charted territory.} (10. Qxd4
$14 Nxd4 11. Bd1) 10... Ne5 $146 ({Predecessor:} 10... e6 11. O-O Be7 12. Rd1
Qb6 13. Be3 Qxb2 14. Na4 Qb5 15. Qxb5 axb5 16. Nb6 Rb8 {1-0 (29) Smirnov,P 
(2566)-Khatoev,E (2283) Barnaul 2011}) 11. Bxc8 (11. h3 {looks sharper.} Bxg4
12. hxg4 Rc8 13. Nd1 Qc4 14. Qxc4 Rxc4 15. Ne3) 11... Rxc8 12. O-O e6 13. Rd1
Qc4 14. Qxc4 Rxc4 15. a4 Be7 16. f3 g5 17. Be3 Kd7 18. a5 g4 19. Kf2 (19. f4
$15 Nc6 20. Rd3) 19... Rg8 (19... gxf3 $17 20. gxf3 Bf6) 20. Bf4 (20. f4 $11 {
keeps the balance.} g3+ 21. Ke2) 20... Ng6 $17 21. Be3 gxf3 22. gxf3 Bh4+ 23.
Ke2 Bf6 24. Ra3 (24. Ra4 $142 Ne5 25. f4 Rg2+ {[%mdl 64] Double Attack} 26. Bf2
) 24... Rb4 (24... Ne5 $17 {Strongly threatening ...Rg2+.} 25. Rg1 Rxg1 26.
Bxg1 Rb4) 25. Rb3 Rxb3 26. cxb3 Be5 (26... Ne5 $17 {Threatens to win with ...
Rg2+.} 27. Rg1 Rxg1 28. Bxg1 Nc6) 27. Na4 $1 $11 Nf4+ 28. Kf1 $1 Ng2 29. Bf2
Bf4 30. Rd3 Bxh2 31. Rc3 {Black must now prevent Nb6+.} d5 $2 {[#]} (31... Rg5
$11 {and Black stays safe.}) 32. Nb6+ $1 $18 {[%mdl 1024] White has strong
compensation.} Ke7 33. Bc5+ (33. exd5 Be5 $11) 33... Kd8 34. Rc2 Bd6 {[#]} (
34... Be5 $142 35. Rxg2 Rxg2 36. Kxg2 Kc7) 35. Bd4 $1 {[%cal Rd4f6] Intending
Bf6+ and mate.} ({Less strong is} 35. exd5 Rg5 $14) 35... Rg6 36. Rxg2 Rxg2 37.
Kxg2 dxe4 38. fxe4 f5 39. Nc4 Bf8 (39... Bc7 $142 40. Kf3 Kd7 41. Ne5+ Ke7) 40.
exf5 exf5 41. Ne3 f4 42. Nd5 Kd7 43. Kf3 Kc6 44. Nxf4 (44. Nf6 $142) 44... Bb4
45. Bc3 Kb5 46. Ke4 ({Better is} 46. Be5 $18) 46... Bxa5 $16 47. Kd5 {White
wants to mate with Bxa5.} Bb6 (47... Bxc3 $16 {was called for.} 48. bxc3 a5)
48. Ne6 $18 a5 (48... Be3 {was worth a try.} 49. Ke4 Bc1) 49. Nd4+ Ka6 50. Nf5
Bf2 51. Kc4 b5+ $2 (51... h5 52. Kd3 b5) 52. Kd5 Kb6 53. Bf6 a4 (53... Kc7 $142
54. Nd6 h5 55. Nxb5+ Kb6) 54. b4 Be1 55. Bd4+ Ka6 56. Kc5 h5 57. Bf6 (57. Nd6
$142 Ka7 58. Kxb5+ Kb8 59. Kc5 h4 60. b5 Bg3 61. Nf5 Bf4 62. Nxh4) 57... Bf2+
58. Kc6 {White mates.} Be1 59. Be7 Bf2 60. Bc5 Be1 61. Nd4 h4 62. Nxb5 {
[%cal Rb5c7]} Bg3 63. Na3 {Weighted Error Value: White=0.27/Black=0.53} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "1.2"]
[White "Mamedyarov, Shakhriyar"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2782"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,61,19,13,9,16,6,7,16,15,12,11,16,16,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. cxd5 cxd5 6. Nc3
Bg7 7. Nf3 Ne4 8. Ne5 Nxc3 9. bxc3 Nc6 10. Nxc6 bxc6 11. O-O O-O 12. Qa4 Qb6
13. Ba3 {The position is equal.} Qa6 {D79: Fianchetto Grünfeld: Symmetrical
Variation (6 0-0 c6 7 cxd5 cxd5).} 14. Qxa6 Bxa6 15. Rfb1 Rfb8 16. Bxe7 Bxe2
17. Bf1 Bxf1 18. Kxf1 Bf8 19. Bxf8 (19. Bc5 {with more complications.} a5 20.
Ke2 Re8+ 21. Kd3 Bxc5 22. dxc5 Re4 23. Rb6) 19... Kxf8 $11 {[%mdl 4096]
Endgame KRR-KRR} 20. Ke2 Ke7 21. Kd3 Kd6 22. Rb3 Rb6 23. Rab1 Rab8 {[#]} 24. h4
$146 ({Predecessor:} 24. c4 dxc4+ 25. Kxc4 R8b7 26. h4 h5 27. R1b2 Rb8 28. Rb1
R8b7 29. R1b2 Rb8 30. Rb1 R8b7 {1/2-1/2 (30) Grischuk,A (2778)-Mamedyarov,S 
(2782) Zagreb 2021}) 24... h5 25. R1b2 Rxb3 26. axb3 {KR-KR} a5 27. Kc2 Re8 28.
Kd2 Rb8 29. Kc2 Re8 30. Kd2 Rb8 31. Kc2 {An uneventful encounter.  Weighted
Error Value: White=0.01/Black=0.01} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "1.3"]
[White "Artemiev, Vladislav"]
[Black "Hansen, Eric"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2704"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,91,0,0,0,0,0,0,0,8,0,0,0,22,27,31,24,21,0,6,13,12,0,0,0,0,0,0,-12,0,
5,6,0,5,13,12,6,10,11,109,23,30,0,0,0,0,0,0,0,0,0,0,0,39,16,126,133,158,158,
142,150,150,149,242,237,270,255,273,278,268,275,310,320,313,312,303,304,662,
627,659,658,657,646]} 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. e4
O-O 7. a4 $5 {[%mdl 4] A promising side line. A07: Réti Opening: New York and
Capablanca Systems.} Nbc6 8. c3 a5 9. Na3 {The position is equal.} h6 10. Nb5
Be6 11. Re1 Qd7 12. d4 {[#]} exd4 $146 ({Predecessor:} 12... dxe4 13. Nxe5 Nxe5
14. dxe5 Qxd1 15. Rxd1 Rad8 16. Be3 c6 17. Nd6 Bxe5 18. Nxb7 Rxd1+ 19. Rxd1 {
1/2-1/2 (41) Artemiev,V (2704)-Nepomniachtchi,I (2792) Moscow 2021}) 13. Nfxd4
Bg4 14. Bf3 Bxf3 15. Nxf3 Rad8 16. Bf4 dxe4 17. Qxd7 Rxd7 18. Rxe4 Nd5 19. Bd2
Rfd8 20. Rae1 f5 21. R4e2 Kf7 22. h4 Nb6 23. b3 Nd5 24. Kg2 b6 (24... Nf6 $11)
25. Kh3 ({Better is} 25. Re6 $16 Nce7 26. Nbd4) 25... Nf6 26. Bf4 (26. Nbd4 $5
Nxd4 27. Ne5+ Kg8 28. cxd4 Rxd4 29. Bc1 $11) 26... Nd5 27. Be5 Nxe5 28. Nxe5+
Bxe5 29. Rxe5 Nf6 30. Nd4 Ne4 31. Nc6 $36 {[%mdl 2048] [#] Threatens to win
with f3. White is pushing.} Rf8 32. f3 Nf2+ (32... Nxc3 $11 {remains equal.}
33. R5e3 Rd1) 33. Kg2 $16 Nd3 34. Re7+ Rxe7 35. Rxe7+ {[%mdl 4096] Endgame
KRN-KRN} Kf6 36. Rxc7 Re8 (36... Rf7 $16 37. Rc8 Rd7) 37. Nd4 $18 Re1 38. Rc6+
Kf7 39. h5 gxh5 40. Rxb6 Rc1 41. Rxh6 Rxc3 42. Rxh5 Kg6 43. Rxf5 Nc5 $2 (43...
Rxb3 44. Rxa5 Rb2+ 45. Kf1 Rf2+ 46. Kg1 Ra2) 44. Rd5 {White is clearly winning.
} Kf6 45. g4 Nd3 {[#] Strongly threatening ...Nf4+.} 46. Kg3 {Weighted Error
Value: White=0.07/Black=0.25} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "1.4"]
[White "Giri, Anish"]
[Black "Naroditsky, Daniel"]
[Result "1/2-1/2"]
[ECO "E94"]
[WhiteElo "2776"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,85,28,26,40,41,38,30,36,27,38,39,30,31,58,9,8,0,0,0,0,0,0,-20,-21,
-37,-29,-46,-52,-64,-68,-63,-60,-62,-31,-42,-47,-50,-25,-27,-29,-38,0,0,-7,-14,
7,7,7,7,7,7,7,2,7,5,7,7,11,11,4,0,0,0,4,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O exd4 8. Nxd4 Re8 9. f3 Nc6 10. Be3 Nh5 11.
Nc2 f5 $1 {The main line 11...f5 scores better than 11...Be5. E94: King's
Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves.} 12. Qd2 Nf6 13.
Bg5 Ne5 {White has an edge.} 14. exf5 Bxf5 15. Ne3 Be6 16. Ned5 Nf7 17. Bh4 {
[#]} Bxd5 $146 ({Predecessor:} 17... c6 18. Nxf6+ Bxf6 19. Bxf6 Qxf6 20. Rfe1
Qg5 21. Qxg5 Nxg5 22. Rad1 Rad8 23. Kf2 Kg7 {1-0 (52) Gonda,L (2538)-Kalegin,E
(2462) Budapest 2013}) 18. cxd5 Ne4 19. Nxe4 Qxh4 20. g3 Qh6 21. Qxh6 Nxh6 22.
Rac1 Re7 23. b3 Nf5 24. Bd3 Bb2 25. Rb1 {[%cal Rb1b2]} Bd4+ 26. Kh1 h6 27. Rfe1
Kg7 28. Nd2 Rae8 (28... Ne3 {seems wilder.} 29. Be4 Rae8 30. Rec1 b5 31. a4 b4)
29. Rxe7+ Rxe7 30. Be4 a5 31. Nc4 {The position is equal.} b6 32. Kg2 Ne3+ (
32... Kf6 {with more complications.} 33. g4 Nh4+ 34. Kg3 g5 35. Rd1 Bc5) 33.
Nxe3 Bxe3 $11 {[%mdl 4096] Endgame KRB-KRB} 34. Re1 Bc5 35. f4 Kf6 36. h4 h5
37. Re2 b5 38. Kf3 b4 39. Rg2 Rh7 40. Bd3 Re7 {[#] aiming for ...Re3+.} 41. Be4
Rh7 $1 42. Bd3 Re7 {Hoping for ...Re3+.} 43. Be4 {Weighted Error Value:
White=0.05/Black=0.06} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "1.5"]
[White "Liang, Awonder"]
[Black "Firouzja, Alireza"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2587"]
[BlackElo "2759"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,68,29,29,29,32,32,35,29,27,40,22,18,24,25,58,29,43,27,45,29,43,43,45,
52,45,39,43,67,56,0,0,-66,-68,-222,-215,-194,-50,-56,-58,-54,-46,-57,-61,-61,
-51,-44,0,0,0,-38,0]} 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 9. a4 Na5 10. axb5 Nxb3 11. cxb3 {C78: Ruy Lopez:
Archangelsk and Möller Defences.} axb5 12. Rxa8 Bxa8 13. Nxe5 {White is
slightly better.} b4 {has lost popularity (13...d5).} 14. Na4 Be7 15. Qc2 c5 {
[#]} 16. Be3 $146 (16. Nxc5 Bxc5 17. Qxc5 d6 $17) ({Predecessor:} 16. Rd1 Re8
17. Nf3 d6 18. Be3 Bc6 19. h3 Nd7 20. d4 Qa8 21. Nd2 cxd4 22. Bxd4 {0-1 (35)
Rozhnev,I (2183)-Potrata,J (2297) ICCF email 2013}) 16... d6 17. Nf3 Qb8 18. h3
Qb5 19. Re1 h6 20. Nh4 Re8 {Threatening ...Nxe4.} 21. Nf5 Bf8 {[%cal Rf6e4]}
22. Bf4 Re6 23. f3 d5 24. e5 (24. Be3 $14) 24... d4 $11 25. Bg3 ({White should
play} 25. exf6 $11 Rxe1+ 26. Kf2) 25... Nh5 {[%mdl 1024] Black has
compensation.} 26. Bh2 $2 (26. Nd6 $15 Bxd6 27. exd6 Nxg3 28. Rxe6 fxe6 29.
Nxc5) 26... g6 $19 27. Ng3 {[#]} Nf4 (27... Nxg3 $1 $19 28. Bxg3 Bd5) 28. Rd1
$1 $15 Nd5 {And now ...Ne3 would win.} 29. Nf1 Bb7 30. Rc1 Ba6 31. Qc4 ({
Don't blunder} 31. Nxc5 $2 Rc6 $19) 31... Qc6 32. Qc2 {[%cal Ra4c5]} Qb5 33.
Qc4 $1 {[%cal Rc4d5]} ({Not} 33. Nxc5 $2 Rc6 $19) 33... Qc6 34. Qc2 {[%cal
Ra4c5]} Qb5 {Weighted Error Value: White=0.16/Black=0.11} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "1.6"]
[White "Aronian, Levon"]
[Black "Le, Quang Liem"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2782"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,79,40,30,35,35,35,28,32,32,27,29,56,79,68,60,56,58,53,76,83,60,68,66,
72,0,0,-7,-15,-34,-38,-101,110,-18,-20,-216,-91,-116,-31,-28,-57,-92,0,0,25,43,
50,43,179,-330,165,147,268,193,507,522,585,586,546,469,29937,12843,6540,5647,
29952,7395,6552,6551,29986,29987]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5.
O-O Bc5 6. c3 b5 7. Bc2 d5 {C78: Ruy Lopez: Archangelsk and Möller Defences.}
8. a4 {[%cal Ba2a4,Ba4b5][%mdl 32] Strongly threatening exd5.} dxe4 9. axb5 $1
Bg4 {[%mdl 64] Pin. White has an edge.} 10. bxc6 {Hoping for d4.} exf3 11. gxf3
Bh3 {is the new trend.} 12. Re1 O-O 13. Ra5 $1 {[%cal Ra5c5]} Qd6 {And now ...
e4 would win.} 14. b4 Bxf2+ 15. Kxf2 e4 16. Kg1 {aiming for Rg5.} Rae8 $1 {
Threatens to win with ...exf3.} 17. Re3 {[%cal Rf3e4]} (17. Rxa6 exf3 18. Rf1
Re2 19. Rf2 Rxf2 20. Kxf2 Re8 21. Qg1 Ng4+ 22. Kxf3 Nxh2+ 23. Qxh2 Qxh2 24.
Bxh7+ Kxh7 25. d4 Qg2+ 26. Kf4 g5#) 17... Nh5 $1 {( -> ...Qg6+)} 18. f4 (18.
Rxh5 Qg6+ 19. Rg5 Qxg5+ 20. Kf2 Qg2+ 21. Ke1 Qf1#) (18. Rxe4 f5 $19) (18. Rg5
$1 $16 Qf6 19. f4 (19. Rxh5 Qg6+ {[%mdl 64] Double Attack} 20. Rg5 Qxg5+ 21.
Kf2 Qg2+ {[%mdl 64] Double Attack} 22. Ke1 Qf1#) 19... Qxf4 20. Rxh5 (20. Rxh3
Qxg5+ 21. Kh1 Nf4 $15)) 18... Nxf4 $40 {[%mdl 128] Black has some attack.} 19.
Rg5 (19. Rxa6 $2 Re6 $19) (19. Bxe4 $2 Rxe4 $1 {[%mdl 512]} 20. Rxe4 Qg6+ 21.
Kf2 Qxe4 $19) 19... f5 $1 {[#]} 20. Rgg3 $146 ({Predecessor:} 20. d4 Bg4 21.
Rxg4 fxg4 22. Qxg4 Nd3 23. Bxd3 exd3 24. Rxe8 Rxe8 25. Bf4 Qxc6 26. Be5 Qh6 27.
Bf4 Qc6 28. Be5 Qh6 29. Bf4 Qc6 {1/2-1/2 (29) Vachier Lagrave,M (2760)-Caruana,
F (2820) Bucharest 2021}) 20... Bg4 21. Qe1 ({White should play} 21. Qf1 $1 $15
Nh5 22. d4 (22. Qxa6 Nxg3 23. Qc4+ Kh8 $19)) 21... Nh5 $2 {[#]} (21... Qg6 $17
{stays on course. Black wants to play ...Nh3+.} 22. Qf1 {[%mdl 64] Double
Attack} Nh5) 22. d4 ({White must play} 22. Rxg4 $1 $16 fxg4 23. b5 (23. Rxe4
Qxc6 24. d4 g3 $11) (23. Bxe4 Nf4 $11) 23... axb5 24. Ba3 {[%mdl 64] Skewer}
Qxc6 25. Bxf8 (25. Bxe4 Qd7 $16) (25. Rxe4 Nf4 $15) 25... Rxf8 26. Bxe4) 22...
Nxg3 23. Rxg3 $2 {[#]} (23. hxg3 $11 {and White stays safe.} Qxc6 24. Nd2)
23... Bf3 (23... Bh5 $1 $19 {is more deadly.} 24. Rg5 Bf3) 24. Nd2 $17 f4 (
24... Qxc6 $17 {...f4 is the strong threat.} 25. Qf1 f4 26. Rxf3 exf3 27. Nxf3
Qxc3 {[%mdl 64] Double Attack}) 25. Rg5 $1 $15 Qf6 26. h4 h6 ({Black should try
} 26... Qxc6 $17 27. Rc5 (27. Nxf3 exf3 28. Re5 Rxe5 $17) 27... Qd7) 27. Nxf3
$11 hxg5 (27... exf3 $5 28. Re5 $8 Rxe5 {[%mdl 64] Overworked Piece} 29. Qxe5 (
29. dxe5 Qe6 $11) 29... Qxh4 30. Qe6+ Rf7 31. Qe8+ Rf8 32. Bb3+ Kh7 33. Bc2+
Kg8 34. Qe6+ (34. Bb3+ Kh7 $11) 34... Rf7 35. Qe8+ Rf8 $11) 28. Bb3+ Kh7 $1 29.
hxg5 Qf5 (29... Qxc6 $14 30. Bc2 Kg8 31. Bb3+ Kh7) 30. Qh4+ $18 {[%mdl 1024]
White has strong compensation.} Kg6 {[#]} 31. Bc2 $1 Re6 {[#]} (31... Kf7 $16)
(31... Re7 32. b5) 32. c4 $1 Kf7 $2 {[#]} (32... Re7 {is more resistant.} 33.
b5 axb5) (32... Ree8 33. d5) 33. d5 $1 {Black must now prevent Nd4.} Rg6 (33...
Re7 34. Nd4) 34. Qxf4 ({Inferior is} 34. Bxf4 Ke8 $11) 34... Qxf4 35. Bxf4 exf3
(35... Ke8 $18) 36. Bxg6+ Kxg6 37. Bxc7 {KR-KB} f2+ 38. Kf1 Kf5 39. d6 Ke4 40.
d7 {What a bad dream for Black.  Weighted Error Value: White=0.22/Black=0.95}
1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "1.7"]
[White "Van Foreest, Jorden"]
[Black "Vidit, Santosh Gujrathi"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2698"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "46"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,46,-7,0,-47,-49,-54,-39,-40,-40,-48,-15,-12,-8,-6,-11,-6,-11,-9,-20,
-31,-6,-8,0,0,0,0,0,-938,-930,-926,-925,-864,-837]} 1. d4 Nf6 2. c4 e6 3. Nc3
Bb4 4. g3 O-O 5. Bg2 d5 6. Nf3 dxc4 7. O-O Nc6 8. a3 Be7 9. e4 {E20:
Nimzo-Indian: 4 g3 and 4 f3.} Na5 10. Be3 {10.Qe2 is not played anymore.} a6
11. Qc2 {Black is slightly better.} b5 12. Rad1 c6 13. d5 $1 {[%cal Rd5d6]}
exd5 14. exd5 Nxd5 ({Much weaker is} 14... cxd5 $6 15. Ng5 $16) 15. Nxd5 cxd5
16. Ng5 $1 {[%mdl 64] Decoy} Bxg5 17. Rxd5 {[%mdl 64] [#] Double Attack} Qe8
$146 ({Predecessor:} 17... Qc7 18. Rc5 Qe7 19. Rxg5 Bb7 20. Rh5 g6 21. Bc5 Qe6
22. Bxb7 Nxb7 23. Bxf8 gxh5 {0-1 (44) Akshat,K (2380)-Debashis,D (2508)
Kolkata 2014}) 18. Rxg5 {[#]} f6 $1 19. Rxg7+ (19. Bxa8 fxg5) 19... Kxg7 20.
Bxa8 Bh3 $36 {[%mdl 2048] Black has some pressure.} 21. Rd1 $2 {[%mdl 8192]}
Qxa8 $19 {[%csl Gh3][%cal Ra8g2] Black is clearly winning.} 22. f3 Qxf3 23. Re1
Nc6 {Weighted Error Value: White=0.35/Black=0.07} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "1.8"]
[White "Carlsen, Magnus"]
[Black "So, Wesley"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "2847"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,109,4,14,0,-19,-26,25,-18,-11,-6,2,-46,0,-7,0,-7,-14,-24,-22,-21,28,
27,27,22,13,31,17,11,29,15,27,32,87,85,89,85,95,94,94,94,91,91,97,98,96,93,95,
101,101,101,131,114,129,131,168,123,214,209,321,321,321,326,316,295,301,291,
260,227,338,309,332,268,714,722,1050,1059,714,714,714,316,295,283,1357,245,331,
316,6147,842,4849,4341,29947,29947,12848,29946,29947,29947,29946,12815,29957,
29946,29959,4610]} 1. d4 Nf6 2. c4 e6 3. Bf4 d5 4. cxd5 Nxd5 5. Bg3 {[#]} c5
$146 ({Predecessor:} 5... Nc6 6. e4 Bb4+ 7. Nd2 Nf6 8. d5 Nxe4 9. Ngf3 Nd4 10.
Bf4 Qf6 11. Be3 Nxf3+ 12. gxf3 Nxd2 13. Bxd2 Qxb2 14. Bxb4 Qxb4+ {0-1 (24)
McGuire,P (564)-Sabaxtarischvili,R (1379) LSS email 2009}) 6. e4 {A50: Queen's
Fianchetto Defence (1 d4 Nf6 2 c4 b6).} Nf6 7. Nd2 Nc6 (7... Qxd4 $142 8. Ngf3
Qd8) 8. e5 {White has an edge.} Nd7 9. Ngf3 cxd4 10. Bc4 Be7 11. O-O O-O 12.
Rc1 Nc5 13. a3 a5 $1 14. Nb3 b6 15. Nbxd4 Nxd4 16. Nxd4 Bb7 17. Nb5 Ne4 18. Nd6
Qb8 19. Qd4 b5 20. Bxb5 Nxg3 ({Black should try} 20... Rd8 $14) 21. hxg3 $16
Bd5 22. Bc6 Bxd6 23. exd6 Ra6 24. Bxd5 Rxd6 {[%mdl 64] [#] Pin} 25. Rc5 Rxd5
26. Rxd5 exd5 27. Qxd5 Qxb2 28. Qxa5 {[%mdl 4096] Endgame KQR-KQR} g6 29. Qb4
$36 {[%mdl 2048] White is really pushing.} Qf6 30. a4 {[%cal Ba3a4,Ba4a5][%mdl
32]} Rc8 31. a5 h5 32. Qa4 {Threatens to win with a6.} Rc6 {[#]} (32... Ra8 $16
33. Re1 Ra6 34. Re8+ Kh7) 33. Qa1 $1 $18 Kg7 (33... Qe6 $142 34. Rb1 Qd6) 34.
Rb1 Qxa1 35. Rxa1 {KR-KR} Ra6 36. f3 Kf6 37. Kf2 Ke5 38. Ke3 Kd5 (38... g5 {
was called for.} 39. f4+ gxf4+ 40. gxf4+ Kd6) 39. Kf4 f6 40. g4 hxg4 $2 (40...
h4 41. Ra4 Ke6) 41. Kxg4 Ke5 42. f4+ Ke6 43. Ra2 Ke7 44. Kf3 (44. f5 $142 gxf5+
45. Kxf5) 44... Kd6 45. Ke4 Ke6 $2 (45... f5+ 46. Kd4 Kc7) 46. Ra1 $2 (46. f5+
gxf5+ 47. Kf4) 46... Kd6 47. f5 gxf5+ (47... g5 48. Kd4 Kc7) 48. Kxf5 Ke7 49.
Kg6 Ke6 50. Re1+ Kd7 51. g4 Kd8 52. Kf7 Rd6 53. Re4 Rc6 54. Rd4+ Kc8 55. Rf4 {
Weighted Error Value: White=0.25/Black=0.52} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "2.1"]
[White "Duda, Jan-Krzysztof"]
[Black "So, Wesley"]
[Result "0-1"]
[ECO "C48"]
[WhiteElo "2738"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "72"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,72,0,0,0,0,0,0,-42,-33,-42,-43,-55,-40,-43,0,0,69,62,66,54,82,88,68,
39,49,0,51,44,48,15,35,0,2,0,0,0,0,-9,22,0,0,0,0,0,0,0,0,0,0,0,34,0,166,-59,
-46,-46,-23,-28,-31,-43,-33,-526,-327,-627,-621]} 1. e4 e5 2. Nf3 Nc6 3. Nc3
Nf6 4. Bb5 Nd4 5. O-O c6 {aiming for ...Nxf3+.} 6. Bc4 {C48: Four Knights: 4
Bb5, replies other than 4...Bb4.} d6 {is now debated instead of 6...d5.} 7. h3
b5 8. Bd3 {[#] The position is equal.} Nxf3+ $146 ({Predecessor:} 8... Ne6 9.
Re1 Be7 10. a3 O-O 11. Bf1 Bb7 12. d4 exd4 13. Nxd4 Nxd4 14. Qxd4 c5 {1/2-1/2 
(51) Nitin,S (2381)-Sunilduth Lyna,N (2624) Tornelo INT 2021}) 9. Qxf3 g5 10.
Be2 g4 11. hxg4 Bxg4 12. Qe3 b4 (12... h5 $11) 13. Bxg4 $14 Nxg4 14. Qh3 Nf6
15. Ne2 Nxe4 16. d4 Qd7 17. Qf3 f5 ({Black should play} 17... d5 $11) 18. a3
bxa3 19. Rd1 Bg7 20. Qxa3 {f3 is the strong threat.} exd4 $1 21. f3 Nc5 22.
Nxd4 O-O 23. Bf4 Rfd8 24. Rd2 Ne6 25. Nxe6 Qxe6 26. c3 {[%cal Rd2d6]} d5 27.
Qa6 d4 28. Re2 Qd5 29. Kh2 d3 30. Re7 {Threatens to win with Ra5.} Re8 $2 {[#]}
(30... Bh6 $11 31. Qa4 Rd6 $1) 31. Rae1 $2 ({And not} 31. Rxa7 Rxa7 32. Qxa7 d2
$15) (31. Ra5 $1 $18 {[%mdl 512]} Rxe7 (31... Qd8 32. Rxe8+) 32. Rxd5 cxd5 33.
Qxd3 {[%mdl 64] Double Attack}) 31... Rxe7 $15 32. Rxe7 Bf6 33. Re1 d2 $36 {
[%mdl 2048] Black fights for an advantage.} 34. Rd1 Be5 35. Qa4 {[%mdl 8192] 
[#]} ({Only move:} 35. Bxe5 $15 Qxe5+ 36. Kh3) 35... Qb5 $1 $19 {[%cal Rb5a4]}
36. Qa2+ (36. Qxb5 Bxf4+ 37. g3 cxb5 38. gxf4) 36... Kh8 {Weighted Error Value:
White=0.48/Black=0.20} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "2.2"]
[White "Vidit, Santosh Gujrathi"]
[Black "Carlsen, Magnus"]
[Result "1/2-1/2"]
[ECO "A87"]
[WhiteElo "2726"]
[BlackElo "2847"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,116,33,39,18,10,20,35,23,35,35,43,49,70,68,68,54,89,89,89,89,96,87,
90,98,90,72,60,54,69,63,56,50,56,66,58,62,127,98,97,6,13,0,0,0,0,0,16,16,16,23,
23,18,70,34,34,37,95,91,194,144,147,128,129,129,129,129,150,158,225,229,232,
217,238,0,0,0,247,237,247,245,243,240,248,243,243,209,200,171,190,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0]} 1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c4 Bg7 5. Nc3 d6 6. Nf3
O-O 7. O-O a5 8. d5 {A87: Dutch Defence: Leningrad System: 5 Nf3.} Na6 9. Be3
Bd7 10. Rc1 {[#] White is slightly better.} c5 $146 ({Predecessor:} 10... c6
11. b3 Rc8 12. Qd2 cxd5 13. Nxd5 Ne4 14. Qd1 Nac5 15. Nd2 Nxd2 16. Qxd2 Bc6 {
1/2-1/2 (70) Macek,O (1934)-Madajczak,P (1612) Litomysl 2019}) 11. Qd2 Nc7 12.
a4 Nce8 13. b3 Qb6 14. Rb1 Qb4 15. Qc1 Ng4 16. Bd2 {Black must now prevent Nb5.
} Qb6 17. h3 Ne5 18. Ng5 Nc7 19. f4 Nf7 20. Nxf7 Rxf7 21. e4 Re8 22. Re1 e5 23.
dxe6 Nxe6 24. exf5 gxf5 (24... Rxf5 $14 25. Nb5 Bc6) 25. Nd5 Qd8 26. Bc3 (26.
Kh2 $16) 26... Bc6 $11 27. Kf2 Bd4+ 28. Bxd4 Nxd4 29. Qc3 Kg7 30. Rxe8 Qxe8 31.
Re1 $36 {[%mdl 2048] White is pushing.} Qd8 32. Ne3 Qf6 (32... Qb6 $1 $11) 33.
Nc2 Nxc2 34. Qxc2 Qd4+ (34... Kf8 $14) 35. Kf1 $16 h5 (35... Bxg2+ $16 36. Kxg2
Qf6) 36. h4 Qf6 37. Qd2 Bxg2+ 38. Kxg2 {[%mdl 4096] Endgame KQR-KQR} Re7 39.
Qxa5 Qb2+ 40. Kf1 Rxe1+ (40... Qf6 $16 41. Rxe7+ Qxe7) 41. Qxe1 $18 Qxb3 $16 {
KQ-KQ} 42. Qe7+ {[%mdl 64] [#] Double Attack} Kg8 43. Qe8+ $2 ({White has to
play} 43. Qg5+ $18 Kh8 44. Qxh5+ Kg7 45. Qg5+ (45. Qxf5 Qd1+ 46. Kf2 Qd2+ 47.
Kf1 Qd1+ 48. Kf2 Qd2+ 49. Kg1 Qd1+ 50. Kh2 Qe2+ 51. Kh3 Qf1+ 52. Kh2 Qe2+ 53.
Kg1 Qe1+ 54. Kh2 Qe2+ $11) 45... Kh8 46. Qd8+ (46. Qxf5 Qf3+ 47. Ke1 Qxg3+ 48.
Kd2 Qf2+ 49. Kd1 Qg1+ 50. Ke2 Qg2+ 51. Kd3 Qg3+ 52. Ke4 Qg2+ 53. Ke3 Qg3+ 54.
Kd2 Qf2+ 55. Kd1 Qg1+ 56. Ke2 Qg2+ 57. Kd3 Qg3+ 58. Ke4 Qg2+ 59. Ke3 Qg3+ 60.
Ke4 $11) 46... Kh7 47. Qd7+ (47. Qxd6 Qf3+ 48. Kg1 Qxg3+ 49. Kf1 Qf3+ 50. Kg1
Qg3+ 51. Kh1 Qh3+ 52. Kg1 Qg3+ $11) 47... Kg8 48. Qe8+ (48. Qxf5 Qf3+ 49. Ke1
Qxg3+ 50. Kd2 Qf2+ 51. Kc3 Qe1+ 52. Kb2 Qb4+ 53. Kc2 Qxc4+ 54. Kd2 Qd4+ 55. Ke2
c4 $11) 48... Kg7 49. Qe7+ Kg8 50. Qg5+ (50. Qxd6 Qxc4+ 51. Kf2 Qc2+ 52. Kg1
Qc1+ 53. Kh2 Qc2+ 54. Kh1 Qc1+ 55. Kh2 Qc2+ 56. Kh3 Qe4 $11) 50... Kh8 51. Qh6+
(51. Qxf5 Qf3+ 52. Kg1 Qxg3+ {[%mdl 64] Double Attack} 53. Kf1 Qf3+ 54. Kg1
Qg3+ {[%mdl 64] Double Attack} 55. Kh1 Qf3+ 56. Kh2 Qf2+ {[%mdl 64] Double
Attack} 57. Kh3 Qf3+ 58. Kh2 Qf2+ {[%mdl 64] Double Attack} 59. Kh3 Qf3+ 60.
Kh2 $11) 51... Kg8 52. Qg5+ (52. Qxd6 Qxc4+ 53. Kg2 Qe4+ 54. Kf2 Qc2+ 55. Kg1
Qc1+ 56. Kh2 Qc2+ 57. Kh3 Qe4 $11) 52... Kh8) 43... Kg7 $11 44. Qe7+ $2 (44.
Kg2 $11 Qc2+ 45. Kf3) 44... Kg8 $18 45. Qg5+ Kh8 46. Qxh5+ Kg7 47. Qg5+ (47.
Qxf5 Qf3+ 48. Kg1 Qxg3+ 49. Kf1 Qf3+ 50. Kg1 Qg3+ 51. Kh1 Qf3+ 52. Kh2 Qf2+ 53.
Kh3 Qf3+ 54. Kh2 Qf2+ 55. Kh3 Qf3+ 56. Kh2 $11) 47... Kh8 48. Qh6+ (48. Qxf5
Qf3+ 49. Kg1 Qxg3+ 50. Kf1 Qf3+ 51. Kg1 Qg3+ 52. Kh1 Qf3+ 53. Kh2 Qf2+ 54. Kh3
Qf3+ 55. Kh2 Qf2+ 56. Kh3 Qf3+ 57. Kh2 $11) 48... Kg8 49. Qe6+ (49. Qxd6 Qxc4+
50. Kf2 Qc2+ 51. Ke1 Qe4+ 52. Kf1 Qf3+ 53. Ke1 Qe4+ 54. Kf2 Qc2+ 55. Kg1 Qb1+
56. Kh2 Qc2+ 57. Kh3 Qe4 $11) 49... Kh8 {intending ...Qf3+.} 50. Qf6+ (50. Qxf5
Qf3+ 51. Kg1 Qxg3+ 52. Kf1 Qf3+ 53. Kg1 Qg3+ 54. Kh1 Qf3+ 55. Kh2 Qf2+ 56. Kh3
Qf3+ 57. Kh2 Qf2+ 58. Kh3 Qf3+ 59. Kh2 $11) 50... Kg8 {[#]} 51. Qxf5 $2 ({
Better is} 51. Qd8+ $1 $18 Kf7 52. Qd7+ (52. Qxd6 Qf3+ 53. Ke1 Qxg3+ 54. Ke2
Qg4+ 55. Ke3 Qg3+ 56. Ke2 Qg4+ 57. Ke3 Qg3+ 58. Ke2 $11) 52... Kg8 53. Qe6+ (
53. Qxf5 Qf3+ 54. Kg1 Qxg3+ {[%mdl 64] Double Attack} 55. Kf1 Qf3+ 56. Kg1 Qg3+
57. Kf1 Qf3+ 58. Kg1 Qg3+ $11) 53... Kg7 54. Qe7+ (54. Qxf5 Qf3+ 55. Kg1 Qxg3+
{[%mdl 64] Double Attack} 56. Kf1 Qf3+ 57. Kg1 Qg3+ 58. Kh1 Qf3+ 59. Kh2 Qf2+ {
[%mdl 64] Double Attack} 60. Kh3 Qf3+ 61. Kh2 Qf2+ {[%mdl 64] Double Attack}
62. Kh3 Qf3+ 63. Kh2 $11) 54... Kg8 55. Qe8+ (55. Qxd6 Qxc4+ 56. Kg2 Qc2+ 57.
Kg1 Qc1+ 58. Kh2 Qc2+ 59. Kh3 Qe4 $11) 55... Kg7 56. Qe7+ Kg8 57. Qg5+ (57.
Qxd6 Qxc4+ 58. Kf2 Qc2+ 59. Kf3 Qe4+ 60. Kf2 Qc2+ 61. Kf1 Qc4+ 62. Kg1 Qc1+ 63.
Kh2 Qc2+ 64. Kh1 Qc1+ 65. Kh2 Qc2+ 66. Kh3 Qe4 $11) 57... Kh8 58. Qf6+ (58.
Qxf5 Qf3+ 59. Kg1 Qxg3+ {[%mdl 64] Double Attack} 60. Kf1 Qf3+ 61. Kg1 Qg3+ {
[%mdl 64] Double Attack} 62. Kh1 Qf3+ 63. Kh2 Qf2+ {[%mdl 64] Double Attack}
64. Kh3 Qf3+ 65. Kh2 Qf2+ {[%mdl 64] Double Attack} 66. Kh3 Qf3+ 67. Kh2 $11)
58... Kg8 59. Qg6+ (59. Qxf5 Qf3+ 60. Kg1 Qxg3+ {[%mdl 64] Double Attack} 61.
Kh1 Qf3+ 62. Kh2 Qf2+ {[%mdl 64] Double Attack} 63. Kh3 Qf3+ 64. Kh2 Qf2+ {
[%mdl 64] Double Attack} 65. Kh3 Qf3+ 66. Kh2 $11) (59. Qxd6 Qxc4+ 60. Ke1 Qe4+
61. Kd1 Qb1+ 62. Ke2 Qe4+ 63. Kd2 Qb4+ 64. Ke3 Qe4+ 65. Kf2 Qc2+ 66. Kg1 Qc1+
67. Kh2 Qc2+ 68. Kh3 Qe4 $11) 59... Kh8 60. Qf6+ (60. Qxd6 Qf3+ 61. Kg1 Qxg3+
62. Kf1 Qf3+ 63. Ke1 Qe3+ 64. Kd1 Qb3+ 65. Ke2 Qxc4+ 66. Kd2 Qb4+ 67. Ke2 Qe4+
68. Kf2 Qc2+ 69. Ke3 Qe4+ 70. Kf2 Qc2+ 71. Ke3 Qe4+ 72. Kf2 $11)) 51... Qf3+
$11 {The position is equal.} 52. Ke1 Qxg3+ 53. Kd2 (53. Kf1 {with more
complications.} Qf3+ 54. Kg1 Qg3+ 55. Kh1 Qf3+ 56. Kh2) 53... Qf2+ 54. Kc3 (54.
Kc1 {is more complex.} Qe1+ 55. Kb2 Qb4+ 56. Kc2 Qxc4+ 57. Kd2) 54... Qe1+ 55.
Kc2 Qe2+ 56. Kc3 {And now Qc8+ would win.} Qe1+ 57. Kc2 {Threatens to win with
Qc8+.} Qe2+ 58. Kc3 {Hoping for Qc8+.} Qe1+ {Black defended with fortune. 
Weighted Error Value: White=0.20/Black=0.10} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "2.3"]
[White "Le, Quang Liem"]
[Black "Van Foreest, Jorden"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2709"]
[BlackElo "2698"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,119,22,21,12,14,14,10,12,19,3,0,2,0,-7,0,0,0,0,0,0,13,7,23,0,0,-22,0,
10,8,30,6,14,9,8,17,-10,-7,0,-4,0,-4,-12,-5,-5,-4,-4,-4,-12,0,-16,0,-12,0,-28,
-42,-30,-13,-34,-8,-8,-5,-13,-12,-14,-12,-12,-12,-16,0,0,0,-8,0,0,0,0,0,-16,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2.
Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6. Nbd2 {C65: Ruy Lopez: Berlin
Defence (3...Nf6), unusual lines and 4 0-0 Bc5.} Nd7 $1 {[%mdl 4] is currently
scoring better than 6...0-0.} 7. Nc4 f6 8. O-O Nf8 9. Be3 Bxe3 {[#]} 10. Nxe3
$146 ({Predecessor:} 10. fxe3 Ng6 11. a4 Be6 12. b3 O-O 13. Qe1 Qe7 14. h3 b6
15. Kh2 a5 16. g4 {1/2-1/2 (28) Nakamura,H (2736)-Van Foreest,J (2701) chess24.
com INT 2021}) 10... Ne6 11. Kh1 O-O 12. Ng1 a5 13. a4 b6 14. Ne2 c5 15. b3 Bb7
16. Qe1 Nd4 17. f4 exf4 18. Rxf4 Nxc2 {[%mdl 64] [#] Remove Defender, Decoy}
19. Nxc2 {aiming for Qc3.} Qxd3 {[%mdl 64] Double Attack} 20. Na3 Qxb3 21. Nb5
Rf7 22. Qd1 Qxd1+ 23. Rxd1 g5 24. Rf2 Bxe4 25. Nec3 Bc6 26. Re2 Kf8 27. Re6 Bd7
28. Ree1 Bc6 29. Re6 Bd7 30. Ree1 Bc6 31. Kg1 (31. Re6 $5 {[%cal Re6c6]} Bd7
$15) 31... Re8 32. Kf2 Rxe1 33. Rxe1 Re7 34. Rxe7 {The position is equal.} Kxe7
35. Nxc7 {[#] N7d5+ is the strong threat.} Kd6 36. N7b5+ Ke5 37. g3 f5 38. Ke3
f4+ 39. gxf4+ gxf4+ 40. Kd3 Be8 41. Na3 {Threatens to win with Nc4+.} Bg6+ 42.
Kd2 Bf7 43. Nc2 Bd5 44. Ne1 Bc6 45. Nd3+ Kf5 46. Ke2 c4 47. Nb2 Ke5 {White
should prevent ...Kd4.} 48. Kd2 $1 ({Not} 48. Nxc4+ $2 Kd4 $19) 48... Bd5 49.
Nxd5 Kxd5 $11 {[%mdl 4096] Endgame KN-KP} 50. Kc3 Kc5 51. Nxc4 b5 52. axb5 Kxb5
{KN-K3P} 53. Ne5 a4 54. h4 h5 55. Kb2 Kb6 56. Kc3 Kb5 57. Kc2 Kb6 58. Kc3 Kb5
59. Kc2 Kb6 60. Kc3 {Weighted Error Value: White=0.03/Black=0.04} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "2.4"]
[White "Firouzja, Alireza"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2759"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,88,15,19,15,16,18,11,23,7,17,13,14,14,20,15,17,18,12,9,11,8,24,21,0,
0,0,8,0,1,0,0,0,0,0,4,4,12,12,12,12,8,8,37,37,37,37,47,11,11,11,61,61,61,61,61,
61,61,61,61,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5
d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 O-O 8. Qd2 {C42: Petroff Defence:
3 Nxe5 and unusual White 3rd moves.} Nd7 9. O-O-O c6 {9...c6 is the modern
continuation.} 10. Kb1 d5 11. Bd3 Re8 12. h4 Bc5 13. Bd4 Bxd4 14. cxd4 Nf6 15.
Rde1 Ne4 16. Qf4 {[%cal Rd3e4]} Qf6 17. Qxf6 Nxf6 18. Ne5 g6 {[#]} 19. Re3 $146
({Predecessor:} 19. a4 Ng4 20. Nxg4 Bxg4 21. a5 Kf8 22. f3 Bd7 23. Kc1 Rxe1+
24. Rxe1 Re8 25. Rh1 {1/2-1/2 (34) Karjakin,S (2782)-Giri,A (2782) Leuven 2018}
) 19... Ng4 20. Nxg4 Bxg4 21. Rhe1 (21. Kc1 {is more complex.} Rxe3 22. fxe3 a5
23. Kd2 Kf8 24. Re1) 21... Rxe3 22. Rxe3 $11 {[%mdl 4096] Endgame KRB-KRB} Kf8
23. Kc1 Re8 (23... Be6 {looks sharper.} 24. Re1 Ke7 25. h5 b6 26. Kd2 Kd6) 24.
Kd2 Rxe3 25. Kxe3 {KB-KB} f6 26. Kf4 Bd7 27. b4 b5 28. c3 Kf7 29. g4 h6 30. g5
hxg5+ 31. hxg5 f5 32. Ke5 Ke7 33. Bc2 a6 34. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]}
Bc8 35. a5 Bd7 36. f4 ({Better is} 36. Bd1 $14) 36... Bc8 {The position is
equal.} 37. Bd1 Bd7 38. Be2 Bc8 39. Bf3 Be6 40. Bg2 Bf7 41. Bh1 Bg8 42. Bg2 Bf7
43. Bh1 Bg8 44. Bg2 Bf7 {Weighted Error Value: White=0.04/Black=0.02} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "2.5"]
[White "Naroditsky, Daniel"]
[Black "Liang, Awonder"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2623"]
[BlackElo "2587"]
[Annotator "ChessBase"]
[PlyCount "78"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "900+10"]

1. b3 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Bb2 {[%emt 0:00:05]} Nc6 {
[%emt 0:00:02]} 3. c4 {[%emt 0:00:00]} Nge7 {[%emt 0:00:01]} 4. e3 {[%emt 0:00:
18]} d5 {[%emt 0:00:03]} 5. cxd5 {[%emt 0:00:13]} Nxd5 {[%emt 0:00:01]} 6. a3 {
[%emt 0:00:02]} Bd6 {[%emt 0:00:05]} 7. Qc2 {[%emt 0:00:07]} Bd7 {[%emt 0:00:
08]} 8. Nf3 {[%emt 0:00:45]} Qe7 {[%emt 0:00:01]} 9. d3 {[%emt 0:00:45]} O-O-O
{[%emt 0:00:03]} 10. b4 {[%emt 0:01:11]} f5 {[%emt 0:00:39]} 11. Nbd2 {[%emt 0:
00:26]} Rhf8 {[%emt 0:01:31]} 12. Nc4 {[%emt 0:01:53]} a6 {[%emt 0:01:50]} 13.
Be2 {[%emt 0:00:36]} Kb8 {[%emt 0:00:06]} 14. O-O {[%emt 0:01:36]} g5 {[%emt 0:
00:09]} 15. d4 {[%emt 0:00:48]} e4 {[%emt 0:00:49]} 16. Nfe5 {[%emt 0:02:17]}
Bxe5 {[%emt 0:00:50]} 17. Nxe5 {[%emt 0:00:09]} Nxe5 {[%emt 0:00:58]} 18. dxe5
{[%emt 0:00:00]} f4 {[%emt 0:00:01]} 19. Bd4 {[%emt 0:00:21]} f3 {[%emt 0:00:
38]} 20. Bc4 {[%emt 0:00:09]} Bc6 {[%emt 0:00:59]} 21. Bc5 {[%emt 0:02:09]} Qd7
{[%emt 0:00:11]} 22. Rfd1 {[%emt 0:01:51]} Qg4 {[%emt 0:01:02]} 23. Bf1 {
[%emt 0:00:01]} fxg2 {[%emt 0:02:50]} 24. Bxg2 {[%emt 0:00:40]} Nf4 {[%emt 0:
00:43]} 25. exf4 {[%emt 0:00:31]} e3 {[%emt 0:00:03]} 26. Rxd8+ {[%emt 0:01:08]
} Rxd8 {[%emt 0:00:01]} 27. fxe3 {[%emt 0:00:03]} gxf4 {[%emt 0:00:05]} 28. h3
{[%emt 0:00:36]} Qg7 {[%emt 0:01:25]} 29. exf4 {[%emt 0:00:12]} Rg8 {[%emt 0:
00:01]} 30. Ra2 {[%emt 0:00:17]} Qf7 {[%emt 0:02:14]} 31. Qb1 {[%emt 0:00:56]}
Qd5 {[%emt 0:00:15]} 32. Qc2 {[%emt 0:00:03]} Qe6 {[%emt 0:00:29]} 33. f5 {
[%emt 0:00:20]} Qxe5 {[%emt 0:00:09]} 34. Qd1 {[%emt 0:00:09]} b6 {[%emt 0:00:
18]} 35. Bd4 {[%emt 0:00:11]} Qd5 {[%emt 0:00:09]} 36. Qd2 {[%emt 0:00:06]}
Qxf5 {[%emt 0:00:20]} 37. Qc3 {[%emt 0:00:07]} Qe4 {[%emt 0:00:25]} 38. Kf1 {
[%emt 0:00:18]} Qb1+ {[%emt 0:00:10]} 39. Qe1 {[%emt 0:00:08]} Bb5+ {[%emt 0:
00:03]} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "2.6"]
[White "Hansen, Eric"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2606"]
[BlackElo "2776"]
[Annotator "TA"]
[PlyCount "68"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,68,21,14,29,8,37,12,31,0,0,-10,4,-10,-18,-16,0,-44,-35,-37,-21,-57,
-52,-54,-47,-50,-47,-64,-51,-60,-35,-36,-35,-47,-28,-27,-32,-37,-31,-39,0,0,0,
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. h3 Bb7 9. d3 d5 {C88: Closed Ruy Lopez: Anti-Marshall
Systems.} 10. exd5 Nxd5 11. Nbd2 Nd4 12. Nxd4 (12. Rxe5 {is more complex.} Nxb3
13. Nxb3 Bd6 14. Re1 Nb6 15. Na5) 12... exd4 13. a4 Bb4 {[#]} 14. axb5 $146 ({
Predecessor:} 14. Rf1 Qf6 15. Ne4 Qc6 16. axb5 axb5 17. Rxa8 Bxa8 18. Qf3 Kh8
19. Ng3 f5 20. Ne2 {1-0 (35) Hansen,E (2925)-Sanal,V (2778) Chess.com INT 2020}
) 14... axb5 15. Rxa8 Bxa8 16. Qg4 Nf6 17. Qf5 c5 18. Re5 g6 19. Qg5 Nd7 $1 {
[%cal Rd7e5]} 20. Qxd8 Rxd8 21. Re2 Nb6 22. Ne4 Bxe4 23. Rxe4 c4 24. Bg5 Ra8 ({
Reject} 24... cxb3 $6 25. Bxd8 bxc2 26. Bg5 $16) 25. dxc4 bxc4 26. Bxc4 Nxc4
27. Rxd4 Ra1+ (27... Bd6 {is interesting.} 28. Kf1 f6 29. Bxf6 Rf8 30. Rxc4
Rxf6 31. Ke2 Kf7) 28. Kh2 {The position is equal.} Bd6+ 29. f4 Ne3 30. Rxd6
Nf1+ 31. Kg1 {[#] Black must now prevent Kf2.} Ng3+ 32. Kh2 Nf1+ 33. Kg1 {
Hoping for Kf2.} Ng3+ 34. Kh2 Nf1+ {Weighted Error Value: White=0.10/Black=0.07
} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "2.7"]
[White "Vachier-Lagrave, Maxime"]
[Black "Artemiev, Vladislav"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2751"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "170"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,170,27,34,12,12,12,14,12,22,12,15,10,8,0,0,0,0,-18,-8,-19,-26,-52,
-51,-62,-58,-75,-70,-75,-21,-66,-62,-62,-62,-85,-75,-89,-89,-89,-89,-89,-71,
-81,-81,-89,-89,-88,-88,-114,-91,-114,-91,-114,-114,-114,-106,-106,-106,-106,
-106,-106,-70,-70,-70,-70,-70,-70,-70,-70,-70,-70,-70,-70,-70,-70,-70,-70,0,
-70,0,0,0,0,0,0,0,-92,0,-147,-147,-147,-147,-147,-147,-147,-92,-92,0,-5836,
-130,-130,0,0,0,0,0,0,0,0,0,0,0,-130,-130,-12836,-12836,-12837,-12838,-12839,
-12839,-12839,-12839,-12840,-12840,-12841,-12839,-12840,-12840,-12842,-12840,
-12841,0,-12842,-12843,-12843,0,0,0,0,0,0,0,0,0,0,0,0,0,-12833,0,-12834,-12834,
-12835,-12835,-12836,-12836,-12848,-12848,-12850,-12849]} 1. e4 c6 2. d4 d5 3.
e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 cxd4 7. Nxd4 Ne7 8. Nd2 {8.0-0 is the hot
move. B12: Caro-Kann: Advance Variation.} Nbc6 9. N2f3 Bg4 10. O-O {The
position is equal.} g6 {[#]} 11. Nxc6 $146 ({Predecessor:} 11. h3 Bxf3 12. Nxf3
Bg7 13. Bf4 O-O 14. c3 Qc7 15. Re1 Nxe5 16. Kh1 f6 17. Nd4 {1/2-1/2 (59)
Dominguez Perez,L (2739)-So,W (2788) Saint Louis 2017}) 11... Nxc6 12. c4 dxc4
13. Qa4 Qa5 14. Qxc4 Bxf3 15. Bxf3 Nxe5 16. Qe4 Bg7 17. Qxb7 Nxf3+ 18. Qxf3 {
Strongly threatening Qc6+.} O-O 19. Rad1 Rad8 ({Much weaker is} 19... Qxa2 20.
Bc5 $11) 20. Qb7 Rb8 (20... Qxa2 $17 21. Bc5 Rb8) 21. Qxa7 Qxa7 22. Bxa7 Rxb2
23. Bd4 Rxa2 24. Bxg7 Kxg7 $17 {[%mdl 4096] Endgame KRR-KRR} 25. Ra1 Rd2 26.
Rfd1 Rd5 27. g3 Rfd8 28. Rdc1 Rd2 29. Rc3 g5 30. h3 h5 31. Rac1 R8d4 32. R3c2
Rxc2 33. Rxc2 {KR-KR} f5 34. Kg2 Kf6 35. Rc8 h4 36. gxh4 gxh4 37. Rf8+ Kg7 38.
Re8 Kf7 39. Ra8 Ke7 40. Rh8 Kd6 41. Ra8 Rb4 42. Ra6+ Kd5 43. Kf3 Rb3+ 44. Kg2
Rb4 45. Kf3 $1 e5 (45... Ke5 $15) 46. Rh6 $11 e4+ 47. Kg2 Rb2 48. Rh5 Ke5 (
48... e3 {keeps more tension.} 49. Rxf5+ Kd4 50. Kf1 Rb1+ 51. Ke2 Ke4) 49. Rh8
(49. Kf1 $11) 49... Ra2 (49... Kf6 $1 $17 50. Rh6+ Kg5) 50. Rb8 (50. Kf1 $11)
50... Kf4 $1 $17 {Threatens to win with ...e3.} 51. Rb3 Rd2 52. Ra3 Ke5 53.
Ra5+ Rd5 ({Black should play} 53... Ke6 54. Ra8 Kf6) 54. Ra8 f4 (54... Kf6 $17
{Hoping for ...Rd2.} 55. Rh8 Rd2 56. Rf8+ Kg5 57. Rg8+ Kf6 58. Rf8+ Kg5 59.
Rg8+ Kf4) 55. Ra3 $2 {[%mdl 8192]} (55. Kf1 $11) 55... Rd2 $2 (55... Rc5 $19 {
is more deadly.} 56. Ra1 Rc3) 56. Kf1 Rd3 (56... f3 $1 $17 {[%cal Rd2d1]} 57.
Ra5+ Kf4) 57. Ra5+ $1 $11 Rd5 (57... Kd4 {with more complications.} 58. Ra4+
Kd5 59. Ra5+ Ke6 60. Ra6+ Kf5) 58. Ra8 Rb5 59. Re8+ Kd4 60. Rd8+ Rd5 61. Ra8 f3
62. Ra3 (62. Ke1 $11 {remains equal.}) 62... Rb5 $17 {[%cal Rb5b1]} 63. Kg1 $2
{[%mdl 8192]} (63. Ra1 $17) 63... Rc5 64. Ra1 Kd3 65. Ra3+ Rc3 66. Ra1 Kd2 67.
Ra2+ Rc2 $1 {[%cal Rc2a2]} 68. Ra3 Rc1+ 69. Kh2 Rc3 70. Ra4 Kd3 71. Ra1 Kd2 72.
Ra4 e3 73. fxe3 {[#]} Kxe3 $2 ({Better is} 73... Rc1 $1 $19 74. Ra2+ Kd3) 74.
Ra1 $1 $11 Rd3 75. Kg1 Rd2 {White must now prevent ...Ke2.} 76. Ra3+ Ke2 77.
Ra1 Rb2 {...Rc2 is the strong threat.} 78. Rc1 Rb3 (78... f2+ {looks sharper.}
79. Kg2 Rb7 80. Rc2+ Ke1 81. Rc1+ Kd2) 79. Rc2+ $1 Ke3 {And now ...Rb1+ would
win.} 80. Ra2 $2 {[%mdl 8192]} (80. Rc1 $11) 80... Rb1+ $19 81. Kh2 {[#]
intending Ra3+.} Rd1 $1 {[%cal Rd1d2] ( -> ...Rd2+). Black is clearly winning.}
({Weaker is} 81... f2 82. Rxf2 Rb5 83. Rg2 $11) 82. Ra3+ Rd3 83. Ra1 Ke2 84.
Kg1 f2+ {[%mdl 64] Discovered Attack} 85. Kg2 Rg3+ {Weighted Error Value:
White=0.28/Black=0.28} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "2.8"]
[White "Dominguez Perez, Leinier"]
[Black "Mamedyarov, Shakhriyar"]
[Result "0-1"]
[ECO "C67"]
[WhiteElo "2758"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,60,14,26,0,0,0,0,0,29,25,15,15,17,24,18,18,43,0,0,0,7,8,35,0,10,0,6,
0,0,0,5,0,0,0,0,-8,0,-6292,-6260,-29962,-29965,-29998,-29999]} 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+ {9.h3 gains popularity.} Ke8 10. Nc3 Be7 11. g4 {C67: Ruy Lopez: Berlin
Defence: 4 0-0 Nxe4.} Nh4 12. Nxh4 Bxh4 13. Kg2 {[#] The position is equal.} f6
$5 $146 {[%mdl 8] New and interesting.} (13... h5 {keeps more tension.} 14. g5
f6 15. exf6 gxf6 16. Ne4 fxg5 17. Bxg5 Bxg5 18. Nxg5 Ke7) ({Predecessor:} 13...
Be6 14. h3 h5 15. f3 Be7 16. Bf4 a5 17. a4 Rd8 18. b3 Rd7 19. Ne4 b6 {1-0 (35)
Dominguez Perez,L (2758)-Tari,A (2639) chess24.com INT 2021}) 14. exf6 Bxf6 15.
f3 Bxc3 16. bxc3 Be6 17. Bf4 Rc8 18. Be5 Kf7 19. Kg3 Rhd8 20. Rd4 Rd5 (20... c5
{feels hotter.} 21. Rf4+ Kg8 22. Ra4 a6 23. Re4 Bd5) 21. f4 g6 22. Rxd5 Bxd5
$11 {[%mdl 4096] Endgame KRB-KRB} 23. Kh4 h6 24. a3 Re8 25. Re1 b5 26. Re3 c5
27. Rh3 g5+ 28. Kh5 $2 {[%mdl 8192] [#]} (28. Kg3 $11) 28... Rxe5 $1 $19 {
[%mdl 512]} 29. fxe5 (29. Kxh6 gxf4) 29... Kg7 {[%cal Rd5f7]} 30. e6 Be4 {
[%csl Gg7][%cal Re4g6] Weighted Error Value: White=0.63/Black=0.06} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "3.1"]
[White "Mamedyarov, Shakhriyar"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2782"]
[BlackElo "2738"]
[Annotator "TA"]
[PlyCount "161"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,161,22,27,14,22,7,36,36,38,37,35,1,33,14,11,-69,0,0,0,0,0,-56,-41,
-45,11,0,95,95,104,81,138,145,145,66,46,29,1345,612,663,595,29994,230,220,0,0,
-82,-82,-82,-43,-142,-142,-138,-119,-119,-142,-151,-151,-150,-135,-122,-95,
-135,-113,-113,-82,-132,-120,-135,0,-82,-82,-82,-82,-82,-82,-82,-82,-82,-82,
-89,-82,-82,-82,-86,-86,-88,-82,-82,-82,-83,-83,-103,-60,-196,-186,-256,-254,
-260,-249,-302,-304,-314,-318,-313,-272,-323,-318,-344,-344,-344,-344,-418,
-344,-470,-470,-457,-447,-438,-385,-366,-344,-344,-344,-344,-340,-412,-383,
-510,-486,-484,-455,-829,-764,-518,0,-377,-343,-337,-331,-302,-263,-263,-263,
-343,-241,-449,-443,-425,-417,-368]} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5
5. Bg5 c6 6. e3 Be7 7. Bd3 Nbd7 8. h3 {8.Nge2 is becoming the main line. D35:
Queen's Gambit Declined: Exchange Variation.} O-O 9. Qc2 h6 10. Bf4 {White is
slightly better.} c5 11. Nf3 a6 12. g4 {[#]} cxd4 $146 ({Predecessor:} 12... c4
13. Bf5 Re8 14. O-O-O b5 15. Ne5 b4 16. Ne2 Qa5 17. Kb1 Nxe5 18. dxe5 Bxf5 19.
gxf5 {1-0 (29) Iljushina,O (2255)-Fedorova,T (1955) Saratov 2008}) 13. exd4 b5
14. g5 (14. O-O $11) 14... Nh5 (14... hxg5 $15 15. Bxg5 Bb7) 15. Be3 $1 $11 (
15. Nxd5 Nxf4 16. Nxf4 Bb7 $17) 15... hxg5 16. Rg1 $1 Nf4 17. h4 (17. Bxf4 $11
gxf4 18. O-O-O (18. Nxd5 Bb7 $15) (18. Bh7+ Kh8 $15)) 17... Nxd3+ $15 18. Qxd3
{[%cal Rh4g5]} b4 (18... Re8 $15 19. hxg5 g6) 19. Nxd5 $11 {Qe4 is the strong
threat.} Bb7 (19... Re8 $1 $11 {keeps the balance.}) 20. Nxg5 $40 {[%mdl 128]
Black is in trouble.} Bxg5 21. Rxg5 Rc8 (21... Re8 $142) 22. Kd2 (22. Nxb4 $6
Nf6 $11) (22. Rh5 $6 g6 $11) 22... Ne5 23. Rxe5 (23. dxe5 $16 Qxd5 24. Rag1)
23... Bxd5 $14 24. Rg1 {aiming for Bh6!} ({But not} 24. Qxa6 f6 $15) 24... Rc7
$2 {[%mdl 8192] [#]} (24... f5 $11) 25. Qf5 (25. Rh5 f5 $18) (25. Rxg7+ $142 $3
{[%mdl 512]} Kxg7 26. Bh6+ $1 {[%mdl 576] Skewer} Kh8 27. Bg7+ (27. Bxf8 Qxh4
28. Qe3 Qh1 $18) 27... Kg8 28. Qg3) 25... Be6 26. Qf4 {Intending Rxg7+! and
mate.} b3 {[#]} 27. Qh6 (27. Rxg7+ $3 {[%mdl 512] mates} Kxg7 28. Qg3+ Bg4 29.
Qxg4+ Qg5 30. Qxg5+ Kh7 31. Qh6+ {[%mdl 64] Double Attack} Kg8 32. Rg5#) 27...
f6 $18 28. Rxe6 $2 (28. Rh5 $1 $18 {Threatens to win with Qh7+.} Rd7 29. Qh7+
Kf7 30. Rxg7+ Ke8 31. axb3) 28... bxa2 $11 29. Rxa6 (29. Qf4 $1 $11 {remains
equal.} Qb8 30. b3) 29... Qb8 $17 30. Rxa2 Qb3 31. Ke2 Qxa2 32. Qf4 Qxb2+ 33.
Kf3 Qb7+ 34. Qe4 Qxe4+ 35. Kxe4 {[%mdl 4096] Endgame KRR-KRB} Re8+ 36. Kf3 Kf7
37. Rb1 Rd7 38. Rb5 Red8 39. Ke4 Ke6 40. Rb6+ {[#]} Kf7 (40... Rd6 $142 $1 {
[%cal Rd6b6]} 41. d5+ Kf7) 41. Rb5 Rh8 42. h5 Re8+ 43. Kf3 Red8 44. Ke4 Ra8 45.
Rc5 Ra1 46. Rb5 Rh1 47. Kf3 Ke6 48. Kg2 Ra1 49. Rb6+ Kf5 50. Kf3 Ra5 51. Rb8
Ke6 52. Rh8 Rad5 53. h6 {[#]} ({White should try} 53. Kf4 $15) 53... g6 $1 $19
54. h7 (54. Rc8 {might work better.}) 54... Kf5 55. Ke2 Rf7 56. Kd3 Rdd7 57.
Ra8 Rxh7 58. Ra5+ Ke6 59. Ke4 Rh4+ 60. Kf3 Rd5 61. Ra6+ Kf5 62. Kg3 g5 63. Ra8
Rg4+ 64. Kf3 Rg1 65. Ke2 Rh1 66. Kd3 Rh7 67. Ra6 Rhd7 68. Ke2 R7d6 69. Ra1 Ke4
70. Rg1 Ra6 71. Rg4+ Kf5 72. Kf3 (72. Rg3 $142) 72... Ra3 73. Re4 Ra6 $2 ({
Better is} 73... Rd7 $19 {White must now prevent ...Rb3.} 74. Rg4 Rb3) 74. Re8
$2 {[%mdl 8192]} (74. Rg4 $1 $11 Ra3 75. Re4) 74... Re6 75. Rg8 Re7 76. Ra8 Kg6
77. Ra6 Red7 78. Ra8 R5d6 79. Rg8+ $2 (79. Ke2) 79... Rg7 80. Ra8 f5 81. Rc8 {
Both players deserved the win here.  Weighted Error Value: White=0.48/Black=0.
24} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "3.2"]
[White "Artemiev, Vladislav"]
[Black "Dominguez Perez, Leinier"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2704"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,89,34,4,10,0,0,-7,0,0,0,0,13,-25,-18,-13,-18,-14,-16,-20,-21,-30,-10,
-9,-14,-14,0,0,0,0,0,-6,-6,-6,0,-14,0,-3,-2,-11,-5,0,0,-25,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 c5 3.
Bg2 Nc6 4. c4 d5 5. cxd5 Nxd5 6. Nc3 g6 7. Qb3 e6 {A34: Symmetrical English: 2
Nc3, lines with ...d5.} 8. O-O Bg7 9. Qb5 Qb6 {[#] White must now prevent ...
Nxc3.} 10. Qc4 Qb4 11. Qxb4 Ndxb4 {[#]} 12. Ne4 $146 ({Predecessor:} 12. d3 O-O
13. Bf4 e5 14. Bd2 Bd7 15. Rfc1 b6 16. Rab1 a5 17. Ne1 Rab8 18. a3 {1-0 (24)
Ghaem Maghami,E (2603)-Seifert,V (2294) Dresden 2005}) 12... b6 13. Nd6+ Ke7
14. Nxc8+ Raxc8 15. d3 Rhd8 (15... Nc2 $5 16. Rb1 $8 N6d4 17. Nxd4 Nxd4 $11)
16. Bg5+ Bf6 17. Bxf6+ Kxf6 18. Rfc1 Nd4 (18... Nd5 {seems wilder.} 19. a3 g5
20. Nd2 h5 21. Kf1 g4) 19. Nxd4 cxd4 20. a3 Nd5 21. Kf1 Ke5 22. Ke1 Kd6 23. Kd2
Rc5 (23... f5 {is interesting.} 24. e3 dxe3+ 25. fxe3 Ne7 26. Bb7 Rxc1 27. Rxc1
g5) 24. Rc4 Rdc8 25. b3 e5 26. Bxd5 Kxd5 $11 {[%mdl 4096] Endgame KRR-KRR} 27.
a4 a6 28. e3 {The position is equal.} dxe3+ 29. fxe3 f5 30. e4+ fxe4 31. dxe4+
Ke6 32. Rxc5 Rxc5 {KR-KR} 33. Rf1 Rc8 34. Rf3 Rd8+ 35. Rd3 Rxd3+ 36. Kxd3 {
KP-KP} Kd6 37. Kc4 Kc6 38. b4 b5+ 39. axb5+ axb5+ 40. Kd3 Kd6 41. Ke3 Ke6 42.
Kf3 Kf6 43. Kg4 h6 44. h4 h5+ 45. Kf3 {Not much happened in this game. 
Weighted Error Value: White=0.05/Black=0.03} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "3.3"]
[White "Giri, Anish"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2776"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,61,0,0,0,0,43,0,14,0,0,0,9,0,26,20,27,26,35,36,20,0,18,12,14,20,20,
20,11,10,12,0,0,0,0,0,0,4,22,0,20,20,20,7,10,10,10,0,0,0,8,0]} 1. Nf3 c5 2. c4
Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nb4 6. Bc4 Nd3+ 7. Ke2 Nf4+ {A34: Symmetrical
English: 2 Nc3, lines with ...d5.} 8. Kf1 {Hoping for d4.} Ne6 9. h4 {seems to
push 9.b4 aside.} (9. b4 $5) 9... Nd4 10. Nb5 Be6 11. d3 {[#] next Nfxd4 is
good for White.} Bxc4 $146 ({Predecessor:} 11... Nbc6 12. Nbxd4 Bxc4 13. dxc4
cxd4 14. Bf4 e6 15. Rh3 Bc5 16. a3 a5 17. e5 O-O {0-1 (35) Dominguez Perez,L 
(2739)-Vachier Lagrave,M (2779) Saint Louis 2018}) 12. dxc4 {[%cal Rf3d4]} Nxf3
{[%cal Rd8d1] [#]} (12... Nbc6 {seems wilder.} 13. Nbxd4 cxd4 14. Bf4 e6 15. h5
Be7) 13. Qxd8+ Kxd8 14. gxf3 a6 15. Nc3 e6 16. h5 {The position is equal.} Bd6
17. Be3 Kc7 18. f4 Nc6 19. e5 Be7 20. Ne4 b6 21. Ke2 Rad8 22. Rad1 Rxd1 23.
Rxd1 Rd8 24. Rg1 g6 25. Rh1 Kd7 26. hxg6 hxg6 27. Rh7 Ke8 28. Rh8+ Kd7 29. Rh7
Ke8 30. Rh8+ Kd7 31. Rh7 {Weighted Error Value: White=0.06/Black=0.05} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "3.4"]
[White "Liang, Awonder"]
[Black "Hansen, Eric"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "2587"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,90,12,-24,31,12,19,16,12,25,34,33,34,31,39,35,35,23,52,48,53,8,30,0,
0,-39,-51,-189,-194,-193,-183,-225,-214,-350,-252,-228,-243,-250,-225,-230,
-237,-234,-224,-216,-196,-253,-188,-288,-281,-341,-264,-341,-312,-338,-330,
-367,-357,-429,-409,-496,-514,-523,-513,-674,-672,-664,-662,-637,-620,-724,
-727,-1023,-851,-1295,-1081,-29987,-29988,-7720,-5095,-29993,-29994,-29994,
-29995]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 d6 6. e5 Nfd7 {E32:
Nimzo-Indian: Classical (4 Qc2): 4...0-0.} ({Black should try} 6... dxe5 $11 7.
dxe5 Ng4) 7. exd6 $14 cxd6 8. Nf3 Nf6 {The position is equal.} 9. Bd3 {[#]} d5
$146 ({Predecessor:} 9... e5 10. O-O Bxc3 11. bxc3 exd4 12. cxd4 Bg4 13. Ng5 h6
14. h3 Bd7 15. Nf3 Nc6 16. Rb1 b6 {1-0 (76) Batsiashvili,N (2466)-Jakubowski,K
(2557) Benasque 2016}) 10. cxd5 exd5 11. O-O h6 12. Ne5 Be6 13. Qb3 Qb6 14. Na4
Qa5 (14... Qxd4 $2 15. Nf3 $18) 15. a3 Bd6 16. Bf4 ({Much weaker is} 16. Qxb7
Qxa4 17. b4 (17. Qxa8 $2 Qxd4 18. Nf3 Qxd3 $19) 17... Nbd7 $11) 16... Nh5 $1 {
[%cal Rh5f4]} 17. Be3 Bxe5 18. Nc5 {[#] Loses the game.} ({Much worse is} 18.
dxe5 d4 $17) (18. Qd1 $1 $15 Bxh2+ 19. Kxh2) 18... Bd6 $1 $19 19. Qxb7 {[#]}
Qc7 $1 {[%mdl 512]} 20. Qxa8 {Strongly threatening Rac1.} (20. Qxc7 Bxc7) 20...
Bxc5 21. Rfc1 {[#]} (21. Bb5 {is a better defense.} Bd6 22. Rac1) 21... Nd7 $1
22. Qxf8+ Kxf8 23. b4 {[#]} Nf4 $1 24. Bf1 {[#]} Bf5 $1 25. bxc5 (25. dxc5 Ne6)
25... g5 26. Ra2 Qa5 27. h4 (27. a4 {was called for.}) 27... Qa4 28. g3 (28.
hxg5 $142 hxg5 29. c6) 28... Ne6 29. Bg2 Qb3 30. Rd2 Nb8 ({Don't play} 30...
Qxa3 31. Rdd1) 31. c6 {White wants to play c7.} Na6 32. Bf3 Nac7 33. g4 Bg6 34.
Kg2 Kg7 35. Rdd1 a5 36. Ra1 Be4 37. Bxe4 dxe4 38. Rab1 Qd5 39. Rdc1 gxh4 40.
Kh3 Qd6 41. Rb7 Ng5+ 42. Kg2 h3+ 43. Kf1 Nf3 44. Ra7 Qxa3 {[%cal Ra3d3]} 45.
Rd1 {[#]} Qa4 $1 {[%cal Ra4d1] Weighted Error Value: White=0.74/Black=0.15} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "3.5"]
[White "Aronian, Levon"]
[Black "Naroditsky, Daniel"]
[Result "1/2-1/2"]
[ECO "E73"]
[WhiteElo "2782"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "48"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,48,40,31,48,27,31,31,44,18,25,17,9,-8,0,-19,4,-33,0,0,0,-13,-14,-455,
-462,-444,-418,-510,-480,-511,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7
4. e4 d6 5. Be2 O-O 6. Be3 Nc6 {[%cal Bb8c6,Bc6e5,Be5g4][%mdl 32] Recently 6...
Na6 got a lot of attention.} 7. d5 Ne5 {E73: King's Indian: Averbakh Variation
without 6...c5.} 8. f4 Neg4 9. Bd2 Nh6 $1 {White is slightly better.} 10. h3 {
Threatening g4.} e6 11. g4 exd5 12. exd5 Re8 13. Kf1 {[#]} c6 $146 ({
Predecessor:} 13... Nd7 14. Qc2 Nc5 15. Re1 Qh4 16. Bf3 Bd7 17. Rxe8+ Rxe8 18.
Nge2 Nf5 19. gxf5 Bxf5 {0-1 (25) Krush,I (2424)-Panjwani,R (2450) New York 2019
}) 14. Nf3 (14. g5 {seems wilder.} Nf5 15. gxf6 Qxf6 16. Rh2 Bd7 17. Qe1) 14...
Nfxg4 (14... cxd5 {keeps more tension.} 15. cxd5 Nhxg4 16. hxg4 Bxg4 17. Kg2
Rc8) 15. hxg4 Bxg4 16. Ng5 (16. Bd3 {with more complications.} Nf5 17. Bxf5
Bxf5 18. Qb3 Bg4 19. Kg2) 16... Bxc3 17. Bxc3 $4 {[%mdl 8192]} (17. Bxg4 $11 {
and White is okay.} Bxd2 18. Nxf7 (18. Qxd2 Nxg4 19. Rxh7 Qb6 $15) (18. Rxh6 $2
Bxf4 19. Nxf7 Qf6 $19 {[%mdl 64] Double Attack}) 18... Nxf7 19. Qxd2) 17...
Bxe2+ $19 18. Qxe2 Rxe2 19. Rxh6 Rc2 20. Rxh7 {[%csl Gc3][%cal Rh7h8] [#]} f6
$2 (20... Rxc3 $1 $19 21. bxc3 (21. Rh8+ Kxh8) 21... Qf6 {[%mdl 64] Double
Attack} 22. Rxf7 Qxc3 {[%mdl 64] Double Attack}) 21. Rh6 $1 $11 {[%cal Rh6g6]
The position is equal.} Kg7 {Threatens to win with ...Qb6.} 22. Rh7+ $1 Kg8 23.
Rh6 $1 {[%cal Rh6g6]} Kg7 {...Qb6 is the strong threat.} 24. Rh7+ $1 Kg8 {
Weighted Error Value: White=0.34/Black=0.32} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "3.6"]
[White "Van Foreest, Jorden"]
[Black "Firouzja, Alireza"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2698"]
[BlackElo "2759"]
[Annotator "TA"]
[PlyCount "100"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,100,20,22,10,4,16,7,0,0,0,0,-11,-8,-6,0,-9,11,19,5,-7,0,-8,-9,-3,-6,
-13,-4,-8,-2,-12,-18,-12,0,0,0,0,0,0,0,0,6,4,7,9,0,2,8,2,6,6,4,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3
Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. d3 Bc5 {The position is equal.
} 8. Be3 {C78: Ruy Lopez: Archangelsk and Möller Defences.} Bxe3 {is the
legacy move (8...d6).} 9. fxe3 O-O 10. Qe1 d6 11. a4 Ne7 {[#]} 12. axb5 $146 ({
Predecessor:} 12. Qg3 Ng6 13. Ng5 c6 14. Nd2 d5 15. Ndf3 Qe7 16. exd5 cxd5 17.
Nh4 Nxh4 18. Qxh4 {1/2-1/2 (51) Neagu,L (2556)-Persson,C (2568) ICCF email 2012
}) 12... axb5 13. Rxa8 Bxa8 14. Nc3 Qd7 15. Qg3 Ng6 16. Ng5 b4 17. Nb1 d5 {
[%cal Rd5e4]} 18. Nd2 h6 19. Ngf3 Nh5 20. Qe1 dxe4 21. Nxe4 Bxe4 22. dxe4 c5
23. Qe2 {[#] Hoping for Nh4!} Nf6 24. Qc4 Qc6 25. Ne1 Qxe4 26. Qxc5 Ng4 27. Nf3
Qxe3+ ({Don't blunder} 27... Nxe3 $2 28. Re1 $18) 28. Qxe3 Nxe3 29. Re1 Nf5 30.
Nxe5 Nxe5 31. Rxe5 $11 {[%mdl 4096] Endgame KRB-KRN} Nd4 32. Bc4 Nxc2 33. Re7
Nd4 34. Rb7 Nc6 35. Bd5 Ne5 36. Rxb4 Rd8 37. Rb5 g5 38. h3 Kg7 39. Be4 Nc4 40.
b3 Rd1+ (40... Nd6 {looks sharper.} 41. Rd5 Kf6 42. Bf3 Ke6 43. Kf2 f5) 41. Kf2
Nd6 42. Rb4 Nxe4+ (42... Rd2+ {is more complex.} 43. Kf3 f5 44. Ba8 Ra2 45. Ra4
Rc2) 43. Rxe4 {KR-KR} Rb1 44. b4 Rb2+ 45. Kf3 Rb3+ 46. Ke2 f5 47. Rc4 f4 48.
Kf2 Kg6 49. Rc6+ Kf5 50. Rxh6 Rxb4 {A rather calm draw.  Weighted Error Value:
White=0.02/Black=0.01} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "3.7"]
[White "Carlsen, Magnus"]
[Black "Le, Quang Liem"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2847"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,85,7,42,-2,33,21,45,26,29,29,26,20,56,48,83,33,110,111,99,118,109,90,
110,106,120,66,71,52,117,134,170,176,229,228,293,286,324,273,447,436,447,447,
447,416,441,445,439,436,500,479,420,395,585,422,517,509,489,469,476,475,483,
484,1986,1780,12796,11902,5514,5497,29977,29978]} 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. a3 h6 10. d4 {C90:
Closed Ruy Lopez with 7...d6: Early deviations.} Re8 11. Nbd2 Bf8 12. Bc2 {
White is slightly better.} Bg4 13. h3 Bh5 14. d5 {[#]} Nb8 $146 ({Predecessor:
} 14... Ne7 15. Nf1 c6 16. dxc6 Qc7 17. Ng3 Bg6 18. Nh4 Qxc6 19. Qf3 d5 20.
exd5 Qxd5 21. Nxg6 Nxg6 {1-0 (31) Suetin,A-Nielsen,J Copenhagen 1965}) 15. a4 {
And now axb5 would win.} Nbd7 16. Qe2 Rb8 (16... Bg6 $14) 17. Nb3 $16 c6 18.
dxc6 {Black must now prevent axb5.} Nc5 19. axb5 axb5 20. Nxc5 dxc5 21. g4 (21.
c4 $16 Bxf3 22. Qxf3 (22. gxf3 bxc4 23. Qxc4 Rb4 $16)) 21... Bg6 $14 22. c4
bxc4 {White stays focused until the end.} ({Black should try} 22... b4 $1 $14)
23. Bd2 $36 {[%mdl 2048] Keeping Black busy.} ({Don't take} 23. Qxc4 Rb4 $11)
23... Qc8 24. Bc3 Bd6 (24... Nxg4 $142 25. Qf1 (25. hxg4 Qxg4+ 26. Kh2 Qf4+ 27.
Kg2 Qg4+ 28. Kh2 Qf4+ 29. Kg2 Qg4+ 30. Kh2 $11) (25. Qxc4 Nf6 $16) 25... Bh5)
25. Nh4 $18 Kh7 26. Qxc4 Re7 27. Red1 Qxc6 $2 (27... Bc7 28. Nxg6 fxg6) 28.
Nxg6 fxg6 29. Ra6 Rb6 {[#]} 30. Ba4 $1 {[%mdl 512]} Rxa6 31. Bxc6 Rxc6 32. b4 {
[%cal Bb2b4,Bb4b5][%mdl 32]} Rb7 33. b5 Rcb6 34. Kg2 Bb8 (34... Be7 $142 35.
Rb1 Ne8 36. Bxe5 Nd6 37. Bxd6 Bxd6) 35. Rb1 Ne8 36. Qxc5 Nd6 37. Qxe5 Nxb5 38.
Qc5 Bd6 39. Qe3 g5 (39... Be7 $142 40. Bd2 Rc6) 40. e5 Nxc3 41. Rxb6 Rxb6 42.
Qd3+ {[%mdl 64] [#] Double Attack} Kh8 43. exd6 {Weighted Error Value: White=0.
16/Black=0.61} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "3.8"]
[White "So, Wesley"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2772"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 25,59,14,14,14,25,24,19,20,10,16,15,18,27,13,13,14,18,19,24,29,59,30,39,
16,86,89,78,81,129,66,83,81,133,143,2710,2319]} 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. cxd5 cxd5 10. Nc3 Nxc3
11. bxc3 Nd7 12. Re1 Re8 13. Rxe8+ Qxe8 14. Qb3 {C42: Petroff Defence: 3 Nxe5
and unusual White 3rd moves.} Nb6 15. Ba3 Bxa3 16. Qxa3 {The position is equal.
} Bg4 17. Ne5 Be6 18. Re1 {[#]} Qf8 $146 ({Predecessor:} 18... Qc8 19. g3 Nd7
20. Qb4 Nxe5 21. Rxe5 g6 22. h4 Kg7 23. h5 Qc7 24. c4 {1-0 (24) Adams,M (2271)
-Torres,C (2388) ICCF email 2016}) 19. Qb3 Re8 20. a4 {[%cal Ba2a4,Ba4a5][%mdl
32]} f6 21. Nf3 Qf7 22. a5 Nc4 23. Bxc4 (23. Qb1 $5 {[%cal Rd3h7]} g6 24. Bxc4
dxc4 25. Qb4 $14) 23... dxc4 24. Qb5 Rc8 (24... a6 $1 $11 {keeps the balance.}
25. Qa4 Bd7 26. Rxe8+ Bxe8) 25. Nd2 $16 Bd5 26. Nf1 Bc6 27. Qf5 ({White should
play} 27. Qb4 $16) 27... Bd7 28. Qf4 Qd5 {[#]} ({Black should try} 28... Bc6)
29. Re7 $1 Be8 $2 {[%mdl 8192]} (29... Re8 $16 30. Rxe8+ Bxe8) 30. Qg4 {
[%csl Ge7][%cal Rg4g7][%mdl 64] Double Attack.  Weighted Error Value: White=0.
06/Black=0.21} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "4.1"]
[White "Duda, Jan-Krzysztof"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "2738"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "105"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,105,-16,-31,-21,-12,0,-35,-27,-58,-17,-51,-53,-54,-48,-52,-39,-40,
-22,-31,-26,-36,-38,-38,-48,-49,-37,-49,-13,-60,-5,-30,0,0,106,72,67,86,70,0,0,
-27,-32,-41,-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,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. O-O
e5 5. d3 d5 6. e4 d4 7. a4 Be7 {A08: King's Indian Attack.} 8. Na3 Bg4 9. Qe1
Nd7 {Black is slightly better.} 10. Kh1 {[#]} h5 $146 ({Predecessor:} 10... O-O
11. Ng1 a6 12. Bd2 b6 13. f4 f6 14. f5 Bh5 15. g4 Bf7 16. Rf3 Rb8 {1-0 (34)
Kozul,Z (2595)-Arlandi,E (2423) Ohrid 2001}) 11. h3 Be6 12. Nd2 g5 13. f4 gxf4
14. gxf4 exf4 15. Ndc4 f3 16. Rxf3 Nde5 17. Nxe5 Nxe5 18. Rf5 {[%cal Rf5e5]}
Ng6 19. Qg3 Bd6 20. e5 {[#]} h4 $1 21. Qf2 $11 Nxe5 22. Nb5 {Strongly
threatening Bg5.} Rg8 {[#]} ({Don't go for} 22... Bxf5 $2 23. Qxf5 f6 24. Bf4
$18) (22... Bb8 $11) 23. Bg5 $1 {[%mdl 512]} Rxg5 24. Nxd6+ Kf8 {aiming for ...
Rxg2.} 25. Qxh4 (25. Rxg5 $14 Qxg5 26. Nxb7 (26. Bxb7 Rb8 $11)) 25... Rxg2 26.
Qxd8+ (26. Qh6+ {is interesting.} Ke7 27. Qf6+ Kd7 28. Qxe5 Qh4 29. Rh5) 26...
Rxd8 27. Kxg2 Bxf5 (27... Nc6 {is more complex.} 28. Nxb7 Bxf5 29. Nxd8 Nxd8
30. Rf1 Bd7) 28. Nxf5 $14 {[%mdl 4096] Endgame KRN-KRN. The position is equal.}
c4 29. Ra3 Rd5 30. Kg3 cxd3 31. cxd3 Nxd3 32. Rxd3 Rxf5 33. Rxd4 $11 {KR-KR} b5
34. b3 bxa4 35. bxa4 Rc5 36. h4 Kg7 37. Kg4 Kg6 38. Rd6+ f6 39. Ra6 Rc4+ 40.
Kg3 Rc3+ 41. Kf2 Rc7 42. Ke3 Rh7 43. Ra5 Rxh4 44. Rxa7 Kf5 45. a5 Ra4 46. a6
Ke5 47. Ra8 Kd6 48. a7 {Threatens to win with Rd8+.} Kc7 49. Rf8 Rxa7 50. Rf7+
Kb6 51. Rxa7 Kxa7 52. Kf4 f5 53. Kxf5 {Weighted Error Value: White=0.08/
Black=0.11} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "4.2"]
[White "Le, Quang Liem"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2709"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,79,11,12,27,22,17,17,16,21,17,14,17,20,10,19,21,19,26,0,1,5,17,6,11,
13,33,32,38,0,0,0,0,-3,-10,-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]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. Be2
dxc4 8. O-O c5 9. dxc5 Nxc5 10. Bxc4 Qxd1 {D37: Queen's Gambit Declined: 5 Bf4.
} 11. Rfxd1 b6 12. Bd6 Bxd6 13. Rxd6 Bb7 14. Rad1 Bxf3 15. gxf3 Nb7 16. R6d4
Rfd8 17. f4 Kf8 18. Be2 Rxd4 19. Rxd4 {[#]} Rc8 $146 ({Predecessor:} 19... Rd8
20. Rxd8+ Nxd8 21. Bf3 {1/2-1/2 (21) So,W (2770)-Grischuk,A (2777) Lichess.org
INT 2020}) 20. Bf3 Nc5 21. Nb5 a5 22. Na7 Rc7 23. Nc6 (23. Rd8+ {looks sharper.
} Ke7 24. Ra8 Nd5 25. Bxd5 exd5 26. Nb5) 23... Rd7 {The position is equal.} 24.
Rxd7 Nfxd7 $11 {[%mdl 4096] Endgame KBN-KNN} 25. Kf1 Nd3 26. b3 Nc1 27. b4 Nxa2
28. bxa5 bxa5 29. Nxa5 Nc5 30. Nc4 Ke7 31. Bd1 Nb4 32. Ke2 h6 33. h4 Ne4 34.
Bb3 f6 35. Nd2 Nc3+ 36. Kf1 Nd3 37. Bc2 Nb4 38. Bb3 Nd3 39. Bc2 Nb4 40. Bb3 {
Weighted Error Value: White=0.03/Black=0.02} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "4.3"]
[White "Firouzja, Alireza"]
[Black "Carlsen, Magnus"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2759"]
[BlackElo "2847"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,68,47,51,47,51,36,50,50,50,51,51,55,47,21,36,-56,-20,-64,-53,-70,-15,
-76,-78,-64,-66,-93,-78,-100,-90,-105,-61,-59,13,53,105,73,46,54,128,94,147,41,
48,64,145,144,533,521,430,422,29999]} 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4
Nf6 5. Nf3 Bf5 6. Ne5 c6 7. Bc4 e6 8. g4 Bg6 9. h4 Nbd7 10. Nxd7 Nxd7 11. h5 $1
{[%cal Rh5g6] B01: Scandinavian Defence.} Be4 {[%cal Re4h1]} 12. O-O Bd5 13.
Nxd5 {White is slightly better.} cxd5 14. Bd3 Bd6 15. Qf3 O-O-O {[#]} 16. Be3
$146 ({Predecessor:} 16. c3 Rde8 17. Kg2 g6 18. Bg5 h6 19. Bh4 Rhf8 20. a4 gxh5
{1/2-1/2 (21) Ballow,J (2416)-Biedermann,T (2409) ICCF email 2016}) 16... g6
17. h6 (17. Qxf7 Rdf8 $17) (17. b4 $14 Qc7 18. Qxf7) 17... Rhf8 18. a3 f5 19.
c4 e5 (19... dxc4 $15 20. Bxc4 f4) 20. b4 (20. cxd5 $2 e4 $19) (20. Qxd5 $11 {
keeps the balance.} Qxd5 21. cxd5) 20... Qc7 $1 $17 21. c5 Be7 {Threatens to
win with ...e4.} 22. Bb5 (22. gxf5 e4 $17) 22... e4 23. Qh3 f4 24. Bd2 Bg5 25.
c6 {aiming for Rac1.} Nf6 (25... Nb6 $1 $15) 26. cxb7+ $11 Qxb7 {[#]} (26...
Kxb7 $14 27. Rfc1 Qb6 28. Bc6+ Kb8) 27. Rac1+ $1 $16 {[%cal Ba1c1,Bc1c5,Bc5c7]
[%mdl 32]} Kb8 28. Bc6 $36 {[%mdl 2048] White is pushing.} Qe7 (28... Qc7 $14)
29. Rc5 {And now Rb5+ would win.} e3 {[#] White should prevent ...a6.} 30. fxe3
(30. Rb5+ $1 $16 Kc8 31. Bb7+ Kd7 32. Bxd5) 30... fxe3 $14 31. Be1 Ne4 ({
Black should try} 31... Rd6 $14) 32. Qh2+ $16 Kc8 $2 {[%mdl 8192] [#]} ({
Don't blunder} 32... Qc7 $2 33. Rb5+ Kc8 34. Bb7+ Qxb7 35. Rxb7 $18) (32... Nd6
$16 {is tougher.} 33. Bg3 (33. Bxd5 e2 $11) (33. Rxf8 Rxf8 34. Rxd5 Bf4 $14)
33... Rf2 34. Bxf2 exf2+ 35. Kh1 (35. Qxf2 $2 Be3 $19) (35. Kxf2 Rf8+ 36. Kg1
Qe3+ {[%mdl 64] Double Attack} 37. Qf2 Rxf2 38. Rxf2 Ne4 {[%mdl 64] Pin} 39.
Rb5+ Kc7 40. Rb7+ Kxc6 41. Rbf7 Nxf2 42. Kg2 Nxg4 43. Kf1 Qd3+ 44. Kg2 Qe2+ 45.
Kg1 Be3+ {[%mdl 64] Double Attack} 46. Rf2 Qxf2+ 47. Kh1 Qh2#) (35. Rxf2 Qe1+
36. Kg2 Qe4+ 37. Kh3 Qe3+ 38. Kg2 Qe4+ 39. Kh3 Qe3+ 40. Kg2 Qe4+ $16) 35... Qe2
36. Qxf2 Qxg4) 33. Bd7+ $1 $18 {[%mdl 576] Decoy} Kxd7 34. Rc7+ {[%mdl 64]
Double Attack, Skewer} Ke6 (34... Ke8 $18 35. Rxe7+ Bxe7) 35. Qe5# {Weighted
Error Value: White=0.18/Black=0.57} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "4.4"]
[White "Naroditsky, Daniel"]
[Black "Van Foreest, Jorden"]
[Result "1-0"]
[ECO "D32"]
[WhiteElo "2623"]
[BlackElo "2698"]
[Annotator "TA"]
[PlyCount "139"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,139,7,0,64,10,16,12,14,19,21,14,5,9,14,-16,-14,-21,163,163,163,169,
155,171,163,161,156,160,160,138,133,131,140,141,173,163,181,190,217,210,214,
162,150,109,115,125,166,120,150,73,100,74,74,56,60,56,175,125,178,166,158,95,
87,77,80,93,141,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,12848,0,
0,0,0,0,0,0,0,0,0,0,0,0,12843,12843,12844,12843,12844,12844,27999,27997,27998,
27998,27999,27999]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3 c5 5. cxd5 exd5 6. d4
Nc6 7. Be2 Bd6 8. dxc5 Bxc5 9. O-O O-O 10. b3 a6 11. Bb2 Ba7 12. Rc1 Bg4 {
D32: Tarrasch Defence: Sidelines and lines without g3.} (12... Re8 $11) 13. Nd4
(13. h3 $14 Bh5 14. Nh4) 13... Bxd4 $11 14. Bxg4 Be5 {The position is equal.}
15. Bf3 Qd6 16. g3 Rad8 17. Bg2 {[#]} d4 $146 ({Predecessor:} 17... Rfe8 18.
Re1 h6 19. Qf3 d4 20. exd4 Bxd4 21. Rxe8+ Rxe8 22. Rd1 Qe5 23. Bf1 h5 {1/2-1/2
(85) Rozum,I (2568)-Oparin,G (2624) Sochi 2019}) 18. Ne4 Nxe4 19. Bxe4 Qh6 (
19... Qe7 $11 20. Bxc6 dxe3 {[%mdl 64] Discovered Attack}) 20. Qf3 $18 Rd6 21.
Bxc6 bxc6 22. exd4 Bxd4 23. Bxd4 Rxd4 24. Rxc6 Rd6 25. Rxd6 Qxd6 $16 {[%mdl
4096] Endgame KQR-KQR} 26. Rd1 Qa3 27. Qe2 g6 28. Kg2 h5 29. h4 a5 30. Rd5 Qb4
31. Qd2 Re8 32. Qxb4 axb4 {KR-KR} 33. Kf3 Kg7 34. Rd4 Ra8 35. Rd2 (35. Rxb4
$142 Rxa2 36. Rb6) 35... Kf6 36. Ke3 Ke5 37. Kd3 Rd8+ 38. Kc2 Rc8+ ({Better is
} 38... Ra8 $14 39. Re2+ Kd4) 39. Kb2 $1 $18 f6 (39... f5 $16 {was called for.}
) 40. Rc2 $1 {[%cal Rc2c8]} Rb8 41. Rc4 ({White should play} 41. a4) 41... Kd5
42. a4 bxa3+ 43. Kxa3 Re8 44. Kb2 (44. Rc2 $1 $16) 44... g5 $11 45. Kc3 Re2 46.
Rd4+ Kc6 47. Rd2 Re4 48. Kd3 Rb4 49. Kc3 Re4 50. hxg5 fxg5 51. Kd3 Rb4 52. Rc2+
Kd5 53. Kc3 Re4 54. Ra2 {Black must now prevent Ra5+.} Rg4 55. Ra5+ Kd6 56.
Ra6+ Kd5 57. Rg6 Ke5 $2 {[%mdl 8192] [#]} (57... Ke4 $11) 58. b4 $2 (58. Rxg5+
$1 $18 {[%mdl 512]} Ke6 (58... Kd6 59. Rxg4) 59. Rxg4 hxg4 60. Kd4) 58... Kf5
$1 {[%cal Rf5g6]} 59. Rg8 {And now b5 would win.} (59. Rd6 {is interesting.} h4
60. Rd3 Re4 61. gxh4 gxh4 62. b5) 59... h4 60. gxh4 (60. Rf8+ {with more
complications.} Ke6 61. Re8+ Kd5 62. Rd8+ Kc6 63. Rd3) 60... gxh4 61. Rh8 {
aiming for b5.} Ke5 62. b5 {[%cal Bb4b5,Bb5b6][%mdl 32] Strongly threatening
b6.} Kd6 63. b6 {White wants to mate with b7.} Kc6 64. Rh6+ Kb7 $2 {[%mdl 8192]
} (64... Kc5 $11) 65. Kd3 $18 Ra4 66. f3 Rb4 67. Ke3 Rxb6 68. Rxb6+ {White
mates.} Kxb6 {[#]} 69. Kf4 $1 Kc5 70. Kg4 {Weighted Error Value: White=0.24/
Black=0.19} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "4.5"]
[White "Hansen, Eric"]
[Black "Aronian, Levon"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "2606"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,56,0,7,4,10,0,0,0,0,-44,0,0,0,0,0,0,0,-10,-26,-110,15,22,16,12,122,
126,93,120,117,93,226,0,0,0,0,-585,-588]} 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. h3 Bh5 10. Nbd2 {[%cal
Bb1d2,Bd2e4,Be4g3][%mdl 32]} Nb6 11. Bb5 {11.Bb3 injects fresh life into this
line.} Bd6 12. Ne4 {C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange
Attack.} f5 {12...Re8 is vanishing.} 13. Ng3 Bxf3 14. Qxf3 {The position is
equal.} Qd7 $1 15. d4 {[#] Hoping for d5.} Nxd4 $146 (15... e4 {seems wilder.}
16. Qd1 a6 17. Be2 Rae8 18. Qb3+ Kh8) ({Predecessor:} 15... exd4 16. Bxc6 {
1/2-1/2 (16) Smirin,I (2676)-Melkumyan,H (2640) Warsaw 2016}) 16. cxd4 Qxb5 17.
dxe5 Bxe5 18. a4 $36 {[%mdl 2048] White is pushing.} Qc5 19. a5 Nc4 {[%csl
LRa5,LRb2]} 20. Qb3 {[#]} (20. Bg5 $11) 20... Rae8 (20... Kh8 $1 $17 {aiming
for ...Rae8.} 21. Qc2 b5 22. axb6 cxb6) 21. Be3 $11 Qd5 {Threatens to win with
...f4.} 22. Bxa7 Bxb2 (22... g6 $11 {keeps the balance.}) 23. Red1 $16 Qf7 24.
Ra4 f4 {[#]} 25. Nf1 Re4 (25... Nxa5 $16 26. Qxb2 b6) 26. f3 $2 ({White should
play} 26. Bc5 $18 Nd6 27. Qxf7+ Kxf7 28. Rxe4 Nxe4 29. Bxf8 Kxf8 30. Rb1) 26...
Ne3 $1 $11 27. Qxf7+ Kxf7 28. Nxe3 $4 {[%mdl 8192]} (28. Rxe4 $11 Nxd1 29.
Rxf4+ Kg8 30. Rc4) 28... Rxa4 {Weighted Error Value: White=0.61/Black=0.47} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "4.6"]
[White "Vachier-Lagrave, Maxime"]
[Black "Liang, Awonder"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2751"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,95,18,31,29,37,15,54,55,56,60,60,55,61,62,56,58,63,65,68,60,56,19,29,
20,39,6,68,52,64,6,5,2,10,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,107,107,107,
104,99,108,219,190,429,413,430,425,406,361,374,383,408,402,747,711,698,626,969,
826,998,984,12831,11662,2976,2950,12841,12838,12844,12844]} 1. e4 {Sumets,A} c6
2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. O-O Bg6 {6...h6 is a critical line.}
7. c3 {B12: Caro-Kann: Advance Variation.} Nd7 8. a4 $5 {[%cal Ba2a4,Ba4a5]
[%mdl 4] Exploring less charted territory.} Nf5 9. a5 {White is slightly
better.} a6 10. b4 f6 11. Bf4 fxe5 {[#]} 12. Nxe5 $146 ({Predecessor:} 12. dxe5
Be7 13. g4 Nh4 14. Nd4 Bf7 15. Bg3 h5 16. gxh5 Qc7 17. Bg4 Rh6 18. f4 {1-0 (31)
Caruana,F (2808)-Bareev,E (2675) Baku 2016 CBM 175 [Sumets,A]}) 12... Nxe5 13.
Bxe5 Bd6 14. Bxd6 Nxd6 15. Nd2 O-O 16. Bg4 Bf5 17. Qe2 Qg5 18. Bxf5 Qxf5 (18...
exf5 $11 19. Nf3 Qf6) 19. Rae1 $14 Rae8 20. Nb3 (20. Nf3 $14) 20... Nb5 $1 $11
21. Qd2 e5 22. dxe5 Rxe5 23. Nd4 Nxd4 24. cxd4 Ree8 25. f3 Qg6 26. Re5 Rxe5 27.
dxe5 {[%mdl 4096] Endgame KQR-KQR} Qf5 28. f4 g5 {[%cal Rg5f4]} 29. g3 h5 30.
Qe2 gxf4 31. Rxf4 Qb1+ {[#]} (31... Qg6 $11 32. Qf2 Rxf4 33. Qxf4 Qc2) 32. Qf1
$1 $16 {White leaves nothing to chance now.} Qxf1+ 33. Kxf1 {KR-KR} Re8 34. Rf5
Kg7 (34... b6 $16) 35. Rxh5 $18 Kg6 $2 (35... b6 {was necessary.} 36. Rf5 (36.
axb6 Rb8 $16) 36... bxa5) 36. g4 Rf8+ {[#]} 37. Kg2 $1 Rf4 38. Kg3 Rxb4 39. Rf5
d4 40. h4 Rb1 (40... d3 $142 41. Rf6+ Kg7) 41. Rf6+ {White is clearly winning.}
Kg7 42. Rd6 Rd1 43. Kf4 c5 44. h5 d3 45. h6+ Kf7 46. g5 {White threatens g6+
and mate.} Rf1+ 47. Ke4 Rg1 48. g6+ {Weighted Error Value: White=0.10/Black=0.
28} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "4.7"]
[White "Dominguez Perez, Leinier"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2758"]
[BlackElo "2776"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,86,14,12,0,0,-8,0,0,0,0,31,29,20,18,20,19,21,11,9,17,25,12,14,-7,-6,
-13,-10,-10,0,0,5,5,4,0,17,15,56,66,58,31,31,29,39,39,37,0,0,0,0,0,0,0,0,0,0,0,
10,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5.
Nc3 a6 6. Be3 e5 7. Nf3 Be7 8. Bc4 O-O 9. O-O Nc6 10. Re1 {B90: Sicilian
Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} Be6 {Nowadays more
popular than 10...b5.} 11. Bf1 {[#]} d5 $146 ({Predecessor:} 11... Rb8 12. a3
b5 13. Bg5 Ng4 14. Bc1 Qb6 15. Qd2 Na5 16. b3 Rfc8 17. Bb2 Nf6 {0-1 (42)
Stanitz,A (2087)-Castro,F (2271) ICCF email 2015}) 12. exd5 Nxd5 13. Nxd5 Qxd5
14. Qxd5 Bxd5 15. Rad1 Be6 16. Ng5 Bf5 17. c3 h6 18. Nf3 Be6 19. Bb6 f6 20. Nd4
Bxa2 21. Nxc6 bxc6 22. Rd7 Rf7 23. Ra1 Bf8 24. Rxf7 Bxf7 25. b4 Be6 26. Bxa6
Be7 27. Ra5 {Threatens to win with Bc4!} Kf8 28. Bb7 Rb8 29. Ra7 {Strongly
threatening Bc7.} Bc8 30. Bxc8 Rxc8 $14 {[%mdl 4096] Endgame KRB-KRB} 31. Rb7
Ra8 {[%cal Ra8a1] [#]The position is equal.} 32. Ba7 Rd8 {[%cal Rd8d1]} 33. Kf1
Rd3 34. c4 Rb3 35. b5 cxb5 36. cxb5 Rb2 37. g4 g6 38. Be3 Ke8 39. b6 f5 40.
gxf5 gxf5 41. f4 exf4 42. Bxf4 Bc5 {[#] aiming for ...Rf2+.} 43. Bxh6 Rxb6 {
Weighted Error Value: White=0.03/Black=0.03} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "4.8"]
[White "Mamedyarov, Shakhriyar"]
[Black "Artemiev, Vladislav"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "2782"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "86"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,86,32,51,27,40,73,29,30,15,6,2,8,1,4,12,21,22,12,7,8,6,12,13,11,0,0,
0,0,0,0,0,0,0,0,-8,-8,-12,-12,-14,0,-22,-22,-41,-46,-61,-11,-10,-8,-8,0,-25,
-22,-26,-26,-41,-34,-27,-8,-48,-41,-52,-8,-74,-72,-79,-22,-15,-14,-8,-8,-33,0,
0,0,-38,0]} 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 {Threatens to win with Nb3.} Qa5+ 9. Bd2 $1 {The main
line 9.Bd2 scores better than 9.Qd2.} Qxc5 {White has an edge.} 10. e3 dxe3 11.
Bxe3 Qb4+ 12. Qd2 Qxd2+ 13. Nxd2 Nf6 {[#]} 14. Bb5 $146 ({Predecessor:} 14. Bc4
O-O 15. O-O Ne5 16. Bb3 Bf5 17. Bd4 Nd3 18. Nc4 Rfd8 19. Ne3 Bg6 20. Bxf6 gxf6
{1-0 (63) Dreev,A (2770)-Tay,J (2400) Chess.com INT 2020}) 14... O-O 15. Bxc6
bxc6 16. O-O Nd5 17. Rfc1 Rd8 18. Nb3 Nxe3 19. fxe3 Rb8 20. Rc2 Bf5 21. Rf2 Be4
22. Nc5 Re8 23. b3 Bg6 24. Re2 Bh5 25. Ree1 Rbd8 26. Rac1 Rd2 27. a4 Re5 {
aiming for ...Rg5!} 28. h3 f6 (28... Rg5 $5 29. g4 Bg6 $15) 29. b4 h6 30. a5
Ra2 31. g4 Bg6 32. Rcd1 h5 33. Rd4 hxg4 34. hxg4 Rb2 35. Na4 Rc2 36. Nc5 Kh7
37. Kf1 {[#]} (37. Nd7 $1 $11 Re8 38. Nc5) 37... Bf7 $1 $17 38. Kg1 Rg5 (38...
Kh6 $17) 39. Rf1 $11 Bd5 40. Rf2 Rc1+ 41. Rf1 Rc2 {( -> ...Rg2+)} (41... Rc3 $5
{[%cal Rc3e3]} 42. Kf2 Rg6 $15) 42. Rf2 Rc1+ 43. Rf1 Rc2 {Weighted Error Value:
White=0.09/Black=0.08} (43... Rc3 $5 {[%cal Rc3e3]} 44. Kf2 Rg6 $15) 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "5.1"]
[White "Artemiev, Vladislav"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "2704"]
[BlackElo "2738"]
[Annotator "TA"]
[PlyCount "117"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,117,20,20,25,25,30,0,0,0,0,0,0,4,13,0,0,0,9,8,12,4,17,10,15,16,16,19,
19,14,13,18,27,10,36,27,27,4,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-16,0,0,0,-8,-8,-9,
-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 O-O 5. g3 b6 6. Bg2 Bb7 7.
O-O c5 8. d4 cxd4 9. Qxd4 d6 {A30: Symmetrical English: Double Fianchetto and
Hedgehog.} 10. Rd1 Nbd7 11. Qc3 Rc8 12. Qe1 a6 13. Nc3 Ne4 14. Rac1 {[#]} Ndc5
$146 ({Predecessor:} 14... Nxc3 15. Bxc3 Bxc3 16. Rxc3 Nf6 17. Rcd3 Qc7 18. Qd2
Qb8 19. Qh6 Rc5 20. h3 b5 21. cxb5 Bxf3 22. Rxf3 Qxb5 {1-0 (77) Travadon,L 
(2421)-Livaic,L (2507) Chess.com INT 2020}) 15. Nd4 Nxc3 16. Bxc3 Bxg2 17. Kxg2
Qd7 18. Nc2 Qb7+ 19. f3 Bxc3 20. Qxc3 b5 21. Ne3 Nd7 22. Qd2 Nf6 23. Rc2 Rc5
24. cxb5 axb5 25. Rxc5 dxc5 26. Rc1 Rc8 {The position is equal.} 27. a4 c4 28.
axb5 (28. Rc3 {feels hotter.} bxa4 29. bxa4 Qa7 30. Qd1 Ra8 31. Kf2) 28... cxb3
29. Rxc8+ Qxc8 30. Qb2 Qe6 31. Kf2 Nd7 32. Qd4 Nb6 33. Nd1 Nc4 34. e4 (34. Ke1
{with more complications.} h5 35. Qd8+ Kg7 36. Qd4+ f6 37. Qc3) 34... f6 35.
Ke2 Kf7 36. Qd5 Qxd5 37. exd5 $11 {[%mdl 4096] Endgame KN-KN} Ke8 {And now ...
b2 would win.} 38. Kd3 {[#]} b2 $1 39. Kc2 Na3+ 40. Kxb2 Nxb5 41. f4 $1 Kd7 42.
Kb3 $1 Nd4+ 43. Kc4 Nf3 44. h4 Nd2+ 45. Kd3 Nf1 46. g4 Kd6 47. Ke2 Nh2 48. Ne3
Kc5 49. g5 fxg5 50. hxg5 ({Don't play} 50. fxg5 Kd4 $17) 50... Kd4 {[#] ...Ke4
is the strong threat.} 51. f5 $1 {[%cal Rf5f6]} Ke5 52. f6 exf6 53. gxf6 Kxf6
54. Kf2 {Hoping for Kg2.} h5 55. Kg3 Ng4 56. Nxg4+ hxg4 57. Kxg4 Ke5 58. Kg5
Kxd5 59. Kxg6 {Not much happened in this game.  Weighted Error Value: White=0.
03/Black=0.02} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "5.2"]
[White "Giri, Anish"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2776"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,96,29,27,31,41,22,27,23,27,32,31,27,53,51,59,27,93,79,114,107,116,64,
60,60,64,60,60,49,52,47,64,72,62,64,64,37,55,45,62,26,25,28,43,44,211,66,66,43,
53,0,68,22,27,0,1,0,28,0,1,2,2,0,68,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 
1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. dxc5 {7.e4 is
a critical line.} Bxc5 8. Qxd8+ Kxd8 9. Be2 {D27: Queen's Gambit Accepted:
Classical main line: 7 e4!? and 7 a4.} Ke7 10. Nc3 b5 11. Nd2 {White has an
edge.} Bb7 12. Nb3 Bd6 13. Na5 {[#]} Bc8 $146 ({Predecessor:} 13... Ra7 14.
Nxb7 Rxb7 15. Bd2 Rd8 16. Rfd1 Rbd7 17. Be1 g5 18. h3 h5 19. Kf1 Be5 {1/2-1/2 
(43) Harikrishna,P (2719)-Anton Guijarro,D (2703) Biel 2020}) 14. Bd2 Rd8 15.
Rfd1 {Hoping for a4.} Ra7 (15... Bc7 $11 16. Bf3 Ra7) 16. a4 $16 bxa4 17. Nxa4
Bd7 18. Nc4 (18. Bc3 $16 Bb5 19. Bf3) 18... Bb5 $14 19. Ba5 Bc7 {[%cal Rc7a5] .
..Bxa5 is the strong threat.} 20. Bb4+ Ke8 {Strongly threatening ...Rxd1+.} 21.
Rxd8+ Kxd8 22. Bc5 Rb7 23. Bf8 Bxa4 24. Rxa4 g6 25. g3 a5 26. Kg2 Nc6 27. Bf3 (
27. Bg7 $5 {[%cal Rg7f6]} Ne8 28. Bc3 $16) 27... Nd5 28. Ra1 Ke8 29. Bd6 Bd8 $2
{[#]} (29... Kd7 $14) 30. Rd1 (30. Bd1 $1 $18) 30... Rb5 31. Rd2 {aiming for
Bd1.} Be7 $1 32. Rd1 ({Better is} 32. Bd1 $14 Nb6 {[#]} 33. Bf3 $1) 32... Ncb4
(32... Bd8 $11) 33. Ra1 Nc6 34. Bd1 {Threatens to win with Ba4.} Nb6 35. Bf3
Nd5 36. Bd1 {And now Ba4 would win.} Nb6 37. Nxb6 Rxb6 38. Bc7 Rb7 (38... Rxb2
$11 39. Ba4 Kf8) 39. Bxa5 (39. Bf4 $1 $14 Kd8 40. Ba4) 39... Nxa5 $11 {The
position is equal.} 40. Rxa5 Rxb2 $14 {[%mdl 4096] Endgame KRB-KRB} 41. Ra8+
Bd8 42. Ba4+ Ke7 43. Rc8 h5 44. h4 Ra2 45. Bb3 Rb2 46. Ba4 Ra2 47. Bb3 Rb2 48.
Ba4 Ra2 {Weighted Error Value: White=0.16/Black=0.19} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "5.3"]
[White "Liang, Awonder"]
[Black "Dominguez Perez, Leinier"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "2587"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,124,-26,-29,-15,-18,0,0,0,-8,-15,-16,-5,-14,-18,-31,-20,-40,-45,-31,
-33,-29,-19,-13,0,-8,-10,-7,-16,-14,0,-18,0,0,0,-34,-23,-39,-36,-77,-14,-29,
-20,-90,-101,-100,22,47,45,-20,-20,-17,-18,-14,-20,-36,-35,-33,-16,-31,-12,-11,
-11,-17,-8,-15,-21,-12,-18,-21,-8,-15,-14,-18,-8,-8,-8,-11,-11,-11,-11,-11,
1431,-11,-11,-11,-11,-11,-11,-11,-12,-1277,-1309,-6139,-5339,-5073,-4631,
-29981,-29982,-29982,-29983,-29983,-29984,-29985,-29986,-29986,-29986,-29986,
-29987,-29989,-29990,-29995,-29996,-29996,-29997]} 1. Nf3 Nf6 2. g3 c5 3. Bg2
Nc6 4. d3 d5 5. O-O e5 6. e4 d4 7. a4 Be7 {A08: King's Indian Attack.} 8. Na3
Bg4 9. h3 Bh5 {The position is equal.} 10. Qe1 Nd7 11. Nh2 O-O 12. h4 {
Threatening g4.} f6 13. Bh3 Kh8 {[#]} 14. Bg4 $146 ({Predecessor:} 14. Bd2 Rb8
15. Qb1 a6 16. a5 b5 17. axb6 Nxb6 18. Qa2 Nb4 19. Bxb4 cxb4 20. Nc4 {1-0 (51)
Nenezic,M (2490)-Brenjo,S (2436) Ruma 2017}) 14... Bxg4 15. Nxg4 a6 16. Bd2 b6
17. Qe2 Rb8 18. Nh2 b5 19. axb5 axb5 20. h5 Qe8 21. Qg4 f5 22. exf5 Nf6 23. Qh3
(23. Qf3 {seems wilder.} Nxh5 24. g4 Nf6 25. Qh3 Qf7 26. Rfe1) 23... Qxh5 24.
Qg2 Qe8 25. Rae1 Qd7 (25... c4 $1 $17 26. f4 c3 27. bxc3 e4) 26. g4 $1 $11 c4
27. Nf3 (27. dxc4 $11 Bxa3 28. cxb5 Rxb5 29. bxa3) 27... c3 $1 $17 {[%cal
Rc3d2]} 28. Bc1 Bxa3 ({Black should try} 28... Ra8 $17 29. Nxb5 Ra5 30. Nxc3
dxc3 31. bxc3 Ra2) 29. bxa3 $11 Rbe8 30. g5 (30. Qh3 $14) 30... Nd5 31. Nh4
Nde7 $36 {[%mdl 2048] Black has some pressure.} 32. Qh3 Kg8 33. f4 g6 (33...
Ng6 {with more complications.} 34. fxe5 Rxe5 35. Rxe5 Ncxe5 36. Qg3 Nxh4 37.
Qxh4 Rxf5 38. Qe4 Rxf1+ 39. Kxf1 Ng6) 34. fxe5 Nxf5 35. Nxf5 Rxf5 36. Rxf5 Qxf5
37. Qxf5 gxf5 $15 {[%mdl 4096] Endgame KRB-KRN} 38. Bf4 b4 39. axb4 Nxb4 40.
Re2 Nd5 41. Bh2 Kf7 42. Kf2 Ke6 43. Kf3 Rg8 44. Bf4 Nxf4 45. Kxf4 $11 {aiming
for Rh2. KR-KR} h6 46. gxh6 {Black must now prevent Rh2.} Rg4+ 47. Kf3 {
Hoping for Rh2.} Rh4 48. Kg3 Rxh6 {Threatens to win with ...Rh1.} 49. Re1 Rg6+
50. Kf3 Rg4 51. Re2 $2 {[%mdl 8192]} (51. Ra1 $11) 51... Rg1 $19 52. Kf2 Rd1 $1
{[%cal Rd1d2]} 53. Kf3 Rd2 $1 {[%cal Rd2e2]} 54. Rxd2 cxd2 {K3P-K3P. Black
mates.} 55. Ke2 f4 56. Kxd2 {[#] K3P-KPP} f3 $1 57. Ke1 Kxe5 58. Kf1 Kf4 59.
Kf2 Kg4 60. Kf1 Kg3 61. Kg1 {[#]} f2+ $1 62. Kf1 Kf3 {Weighted Error Value:
White=0.48/Black=0.10} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "5.4"]
[White "Aronian, Levon"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1-0"]
[ECO "D73"]
[WhiteElo "2782"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "123"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,123,8,13,0,27,33,30,43,43,39,58,45,31,40,56,64,52,51,54,64,64,47,86,
74,72,72,65,41,88,78,77,83,87,89,89,79,89,86,106,91,95,95,95,95,94,93,97,94,
102,53,53,64,141,93,171,125,140,129,129,129,129,129,136,136,407,389,400,359,
341,197,359,387,385,372,371,354,356,356,356,342,342,342,582,582,575,575,581,
567,567,533,508,446,449,0,449,329,329,329,535,535,532,531,529,504,524,479,516,
502,687,666,627,608,748,613,819,492]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 c6 5.
Bg2 d5 6. Ne5 {D73: Fianchetto Grünfeld: 5 Nf3 .} Ng4 (6... O-O {is more
complex.} 7. O-O Nbd7 8. Nc3 dxc4 9. Nxc4 Nb6) 7. cxd5 Nxe5 8. dxe5 {White has
an edge.} Bxe5 9. Nc3 {[#]} O-O $146 ({Predecessor:} 9... cxd5 10. Nxd5 O-O 11.
O-O Nc6 12. Bh6 Re8 13. Qd2 e6 14. Nc3 Qxd2 15. Bxd2 Rd8 16. Rfd1 Bd7 17. Ne4
Be8 18. Nc5 b6 19. Nd3 Bf6 20. Rac1 {1/2-1/2 (20) Blagojevic,D (2536)-Ristic,N
(2433) Budva 2004}) 10. Bh6 Re8 11. O-O cxd5 12. Bxd5 Nc6 13. Qb3 e6 14. Bg2
Nd4 15. Qc4 Bd7 16. Rad1 ({Of course not} 16. Bxb7 $6 Rb8 $11) 16... Rc8 17.
Qb4 Nf5 {[#]} 18. Bg5 Qxg5 (18... f6 19. Bf4) 19. Rxd7 Bxc3 20. bxc3 Re7 21.
Rxb7 Rxb7 22. Qxb7 Rxc3 23. Qxa7 Qd2 24. Be4 Qd4 25. Qb8+ Kg7 26. Bxf5 exf5 $16
{[%mdl 4096] Endgame KQR-KQR} 27. e3 Qf6 28. Qb2 Rc4 29. Rb1 (29. Qb3 {keeps
more tension.} Qa6 30. Rd1 g5 31. Qb2+ f6 32. Qb8) 29... Qxb2 30. Rxb2 $14 {
KR-KR} Rc1+ 31. Kg2 g5 (31... Rc4 $16 {was called for.}) 32. Kf3 Rh1 33. a4 Ra1
34. Rb4 Ra2 35. h4 g4+ 36. Kg2 h5 $2 {[%mdl 8192]} (36... Ra1 $16 {was
necessary.} 37. Rb5 Kf6) 37. Rf4 $1 $18 Kg6 38. Kf1 $1 {[%cal Rf1e1]} Kf6 39.
e4 (39. Ke1 $142 Ke6 40. Kd1) 39... Kg6 $2 (39... Kg7 40. Rxf5 Rxa4) 40. exf5+
({Not} 40. Rxf5 Rxa4 41. Rg5+ Kh6 $14) 40... Kf6 41. Ke1 Ke5 42. f6 $1 Ke6 43.
Kd1 {[%cal Rd1c1]} Rb2 {[#]} 44. Kc1 $1 {[%cal Rc1b2]} Re2 {[#]} 45. Kb1 $1 Re5
$2 (45... Kd5 {was worth a try.} 46. a5 Kc6) 46. Kb2 Kd6 47. Kc3 Kc5 48. Rb4 {
And now Rb5+ would win.} Kc6 49. Kd3 Rf5 50. Ke2 Re5+ 51. Kd3 Rf5 $1 52. Ke3
Rf3+ 53. Ke2 Ra3 $2 (53... Rxf6 54. Rb5 Re6+ 55. Kf1 Rh6) 54. Rf4 {White is
clearly winning.} Kd5 55. Kd2 Kc5 56. Kc2 Ra1 57. Kb2 Rf1 58. a5 {[%cal Ba4a5,
Ba5a6][%mdl 32]} Kd6 59. a6 {a7 would kill now.} Kc7 60. Rf5 Kb6 61. Kc3 Kxa6
62. Kd2 {Weighted Error Value: White=0.15/Black=0.28} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "5.5"]
[White "Van Foreest, Jorden"]
[Black "Hansen, Eric"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2698"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "143"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,143,0,2,-8,13,8,20,10,8,18,25,24,43,34,28,15,20,22,42,43,49,60,52,56,
59,30,78,75,58,50,77,73,91,80,62,0,0,0,0,0,0,0,72,-20,-20,-137,-138,-156,-156,
-158,-157,-160,-157,-163,-101,-169,-145,-144,-96,-97,-50,-56,-57,-39,-57,-202,
-187,-814,8,8,6,8,8,0,0,8,0,0,0,0,41,31,106,97,250,221,350,377,414,414,414,413,
29976,414,414,414,414,407,407,402,652,629,620,606,591,584,584,566,5620,504,
5682,5422,4931,4788,29965,29965,29970,4943,29972,29973,29971,29972,29973,29974,
29972,29972,29982,29983]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4
6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 O-O 10. Be3 {C54: Giuoco Piano: 4 c3
Nf6, main lines with 5 d4 and 5 d3.} Ba5 11. Rc1 {[#]} f5 $146 ({Predecessor:} 
11... Ne7 12. O-O Nxc3 13. bxc3 c6 14. Bd3 Bf5 15. Nh4 Bxd3 16. Qxd3 Bc7 17.
Bg5 f6 18. exf6 gxf6 {1-0 (31) Van Foreest,J (2682)-Maze,S (2557) chess24.com
INT 2020}) 12. exf6 {The position is equal.} Qxf6 13. O-O Bxc3 14. bxc3 Bg4 15.
Be2 $1 Nd6 16. h3 Bh5 17. Qb3 Bf7 18. Bg5 Qf5 19. Bh4 Rfe8 20. Rfe1 Na5 21. Qb4
Nc6 22. Qb2 b6 23. Ng5 h6 {[#]} 24. Bg4 $1 Qg6 25. Nxf7 Qxf7 26. Bf3 (26. Qb1
$14) 26... Na5 $1 $11 {[%cal Bc6a5,Ba5c4,Bc4d2][%mdl 32]} 27. Bg3 Nac4 28. Qc2
c6 29. Qa4 Nb5 (29... Rxe1+ $11 30. Rxe1 Re8) 30. Qb4 (30. Be2 $1 $16) 30... a5
31. Qb3 (31. Qa4 $11 {remains equal.}) 31... Nd2 $1 $17 {[%cal Rd2b3]} 32.
Rxe8+ Rxe8 33. Qd1 Nxf3+ 34. gxf3 Na3 $1 35. Kg2 Qg6 (35... Re6 $19 36. Qd3 Nc4
) 36. h4 (36. Qf1 $17 {was necessary.}) 36... Nc4 $19 37. Rc2 {[#]} Re3 $3 {
[%mdl 512]} 38. Re2 Rxc3 {And now ...Qf7 would win.} 39. Qe1 $1 {[%cal Re1c3]}
Ra3 40. Re8+ Kh7 41. Qe2 {[#]} (41. Rf8 $15 Ne3+ 42. fxe3 Rxa2+ 43. Kg1) 41...
Rxa2 $3 {[%mdl 512]} 42. h5 $2 {[#]} (42. Qe1 Ra1 43. Qe2) 42... Qxh5 $2 (42...
Qxg3+ $1 $19 {[%mdl 512]} 43. fxg3 (43. Kxg3 Rxe2) 43... Rxe2+ 44. Rxe2 b5) 43.
Qd3+ $11 g6 {Threatens to win with ...Ra1.} 44. Qd1 Nd2 $1 45. Qe2 $40 {
[%cal Re2e7][%mdl 128] White mounts an attack.} Qxf3+ $1 46. Qxf3 Nxf3 {
[%mdl 4096] Endgame KRB-KRN} 47. Re7+ Kg8 48. Kxf3 {KRB-KR} c5 49. Re6 Ra3+ {
[#]} (49... Kf7 $14 50. Rxb6 cxd4) 50. Kf4 $1 $16 cxd4 $2 (50... Kg7 $16) 51.
Rxg6+ $18 Kh7 (51... Kf7 {is a better defense.} 52. Rxb6 h5) 52. Rxb6 d3 {
Black wants to play ...d2.} 53. Rd6 Ra4+ 54. Ke3 Rd4 (54... d2 $18 55. Kxd2 (
55. Rxd5 Ra2 $18) 55... h5 56. Rxd5 Kg6) 55. Kd2 (55. Kxd4 $142 d2 {[#]} 56.
Rxh6+ $3 {[%mdl 512]} (56. Rd7+ $2 Kg8 $19) 56... Kxh6 57. Bf4+ {[%mdl 64]
Double Attack} Kg7 58. Bxd2 Kf6 59. Kxd5 a4 60. Ke4) 55... h5 56. Be5 Re4 57.
f4 a4 58. Kxd3 a3 (58... Re1 $142 59. Kd2 (59. Rxd5 h4 $18) 59... Rb1 60. Rxd5
h4) 59. Ra6 h4 60. Rxa3 Kg6 61. Ra8 Kf5 {Now ...h3 and Black clings on.} 62.
Rg8 Ra4 63. Rg5+ Ke6 64. Bd4 Ra3+ 65. Bc3 Ra4 66. f5+ Kd6 67. Rg6+ (67. f6 $142
Ra7 68. Rg7 Ra3 69. Re7 h3 70. Re8 Ra7 71. Be5+ Kc6 72. Rc8+ Kb5 73. Kd4) 67...
Kc5 68. f6 {White mates.} Rf4 69. Ke3 Rf1 70. Rg4 h3 71. Rh4 h2 72. Rxh2 {
Never resign too early!  Weighted Error Value: White=0.40/Black=0.42} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "5.6"]
[White "Carlsen, Magnus"]
[Black "Naroditsky, Daniel"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2847"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,50,-15,7,-5,35,20,11,17,49,41,95,99,105,0,20,2,83,86,87,85,85,75,81,
71,164,145,447,431,641,643,29984,336,604,611,767,735,435,434,29997,29998,29998,
29999,29999]} 1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. Qg4 Nd7 6. Nf3 {B12:
Caro-Kann: Advance Variation.} Nxc5 7. Be2 Ne7 8. O-O {[#] The position is
equal.} Nf5 $146 ({Predecessor:} 8... Qc7 9. Nc3 a6 10. Re1 Bd7 11. a4 Nf5 12.
h4 Be7 13. Bg5 h6 14. Bxe7 Kxe7 {1-0 (46) Mance,J (1848)-Detelic,M (1927)
Busevec 2004}) 9. c4 dxc4 (9... Be7 $14) 10. Rd1 Bd7 11. Bxc4 ({Better is} 11.
Nc3 $16) 11... Qb6 (11... h5 $5 {[%cal Rh5g4]} 12. Qf4 Qb6 $11) 12. Nc3 {
next Ng5 is good for White.} Be7 (12... h5 $11 {keeps the balance.} 13. Qf4 Be7
) 13. Nd4 $1 $16 {[%cal Rd4f5] Nxf5 is the strong threat.} h5 14. Qe2 {And now
Nxf5 would win.} Nxd4 15. Rxd4 Bc6 {Threatening ...Nb3.} 16. Be3 a5 (16... a6
$16) 17. Rad1 O-O $2 {[%mdl 8192] A mistake that costs the game.} (17... Qc7
$16 {is a better chance.}) 18. Qxh5 $18 Qxb2 {[#]} (18... Rfd8 $142 19. Rg4
Rxd1+ 20. Nxd1 Qd8) 19. Rg4 $1 g6 (19... Qc2 20. Bxc5) 20. Bh6 $2 Be8 $2 {[#]}
({Inferior is} 20... Qxc3 {[#]} 21. Rxg6+ $1 {[%mdl 512]} fxg6 22. Qxg6+ Kh8
23. Qg7#) (20... Kh8 21. Qh3 Kg8) 21. Nd5 $1 {[%mdl 512]} exd5 (21... Qc2 22.
Rc1) 22. Bxd5 {White threatens Rxg6+ and mate.} Kh7 23. Qh3 Rh8 (23... Qc2 $18
24. Bxf8+ {[%mdl 64] Discovered Attack} Kg8 25. Rxg6+ Qxg6) 24. Bf8+ {[%mdl 64]
Discovered Attack. White mates.} Kg8 25. Rxg6+ $1 Kxf8 26. Qxh8# {Weighted
Error Value: White=0.24/Black=1.22} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "5.7"]
[White "So, Wesley"]
[Black "Firouzja, Alireza"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2772"]
[BlackElo "2759"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,80,18,22,15,20,22,23,18,8,21,32,15,9,14,13,15,14,11,29,19,23,15,20,9,
44,50,34,0,38,10,18,25,25,0,0,0,0,0,0,-13,-13,-8,-5,-18,0,0,0,-5,-6,-6,0,0,0,0,
0,0,2,5,10,11,10,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5
5. O-O d6 6. c3 a6 7. Re1 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4
and 5 d3.} Ba7 8. a4 O-O 9. h3 {White has an edge.} h6 10. Nbd2 {[%cal Bb1d2,
Bd2f1,Bf1e3,Be3d5][%mdl 32]} Re8 11. Nf1 Be6 12. Bxe6 Rxe6 13. b4 d5 {[#]
Strongly threatening ...dxe4.} 14. Qc2 Qd7 15. Be3 Bxe3 16. Nxe3 Ne7 17. c4
dxc4 18. dxc4 {[#]} Ng6 $146 ({Predecessor:} 18... Qc6 19. Rad1 b5 20. Rd5 bxc4
21. Rc5 Qxe4 22. Qxe4 Nxe4 23. Rxc4 Nf6 24. Rxc7 Rb8 {1/2-1/2 (35) Van Foreest,
J (2557)-Swinkels,R (2485) Maastricht 2016}) 19. c5 Qc6 20. Rad1 b6 21. Nd5
bxc5 22. b5 axb5 {The position is equal.} 23. axb5 Qb7 24. Qxc5 Nxd5 25. Rxd5 {
[%cal Rf3e5]} c6 26. bxc6 Rxc6 27. Qe3 Qc7 28. Red1 Rc3 29. R5d3 Rxd3 30. Qxd3
Rc8 31. g3 Qc3 32. Qe2 (32. Qa6 {keeps more tension.} Kh7 33. Kg2 Qc4 34. Qb7
Rc7 35. Qb1) 32... Nf8 33. Rd5 (33. Kg2 {is interesting.} Ne6 34. Qa6 Rb8 35.
Qd6 Rb5 36. Rf1) 33... Qc4 34. Qxc4 Rxc4 35. Rxe5 $11 {[%mdl 4096] Endgame
KRN-KRN} f6 $1 {[%cal Rf6e5]} 36. Re8 Kf7 37. Ra8 Rxe4 38. Ra7+ Re7 39. Rxe7+
Kxe7 40. Kf1 Ne6 {Weighted Error Value: White=0.06/Black=0.04} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "5.8"]
[White "Vidit, Santosh Gujrathi"]
[Black "Le, Quang Liem"]
[Result "0-1"]
[ECO "C92"]
[WhiteElo "2726"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "142"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,142,17,35,16,42,16,17,11,8,22,7,16,34,22,19,21,24,24,21,27,19,23,25,
21,31,48,31,0,0,0,0,0,23,20,10,4,45,37,62,29,14,21,31,0,53,53,67,46,51,7,4,12,
12,3,22,0,0,0,0,0,0,0,0,0,0,0,13,-2,-4,-4,-4,-5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,3,-61,-61,-61,0,0,0,0,0,0,0,-330,-278,-1042,-909,-5743,-5743,-5741,-5741,
-5743,-5743,-5743,-5741,-5733,-5733,-5733,-5726,-5726,-5726,-5726,-5704,-5724,
-5711,-5493,-5454,-1653,-1294]} 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 {9...Bb7 is the modern
continuation.} 10. d4 Re8 11. a3 {C92: Closed Ruy Lopez: 9...Be6, Karpov and
Flohr-Zaitsev Variations.} Bf8 12. d5 Na5 13. Ba2 {The position is equal.} c6
14. dxc6 {[#]} Bxc6 $146 ({Predecessor:} 14... Nxc6 15. Bg5 Be7 16. Nbd2 Qc7
17. Nf1 Nd8 18. Bxf6 Bxf6 19. Qc2 Ne6 20. Ne3 Rab8 {1-0 (45) Broadway,D (2306)
-Shchebenyuk,N (2091) ICCF email 2018}) 15. Bg5 Nc4 16. Nbd2 Nb6 17. Nh2 h6 18.
Bh4 Be7 19. Bxf6 Bxf6 20. Qh5 Ra7 21. g3 Na4 22. Rab1 Nc5 23. b4 Ne6 24. h4 a5
{With the idea ...axb4.} 25. Bb3 Be7 26. Ng4 Bf8 27. Ne3 g6 28. Qf3 h5 29. Nd5
(29. Bd5 $5 {[%cal Rd5c6]} Qc8 30. Bxc6 Qxc6 31. Nd5 $14) 29... Bxd5 30. Bxd5
Bh6 31. Nb3 axb4 ({Better is} 31... a4 $11 32. Nc1 Rc7) 32. axb4 $14 Rc7 33.
Red1 Kg7 34. Ra1 Qf6 35. Qxf6+ Kxf6 36. Ra6 {Black should prevent Rd3.} Rxc3
37. Rxd6 Bf8 38. Rb6 Bxb4 39. Rxb5 Bd6 40. Rb6 Bc7 41. Ra6 Rb8 42. Nd2 Rb6 (
42... Bb6 {is more complex.} 43. Rb1 Rxg3+ 44. Kh2 Rd3 45. Nc4 Bc7) 43. Rxb6 (
43. Rda1 {keeps more tension.} Rb4 44. Bxe6 fxe6 45. R1a2 Rb6 46. Ra8) 43...
Bxb6 44. Nf1 Bd4 45. Kg2 Nc5 46. Rd2 Nd3 47. Nh2 Bxf2 48. Rxf2+ Nxf2 49. Kxf2
Rc2+ 50. Kg1 Ke7 51. Nf3 f6 52. Kf1 Rc7 53. Ke2 Rc2+ 54. Ke3 ({White should try
} 54. Nd2 $11) 54... Rg2 $15 {[%mdl 1024] Black has compensation.} 55. Bb7 Kd6
(55... Rxg3 $15 56. Kf2 Rg4) 56. Bc8 $1 $11 Kc7 (56... Rxg3 $6 57. Kf2 $16) 57.
Be6 Kd6 ({Much worse is} 57... Rxg3 $6 58. Kf2 $16) 58. Bc8 Ke7 ({But not} 
58... Rxg3 $6 59. Kf2 $16) 59. g4 $2 {[%mdl 8192] [#]} (59. Bb7 $1 $11 {
and White stays safe.}) 59... Rc2 $1 $19 {[%cal Rc2c8]} ({Less strong is} 59...
hxg4 60. Ne1 $17) 60. gxh5 $2 (60. Ba6 hxg4 61. Ne1 Rc3+ 62. Bd3) 60... Rxc8 {
Black is clearly winning.} 61. hxg6 {[%mdl 4096] Endgame KR-KN} Rh8 62. g7 Rg8
63. h5 Rxg7 64. Nh4 Rg3+ 65. Kf2 Rh3 66. Nf5+ Kf7 67. Ng3 Rh4 68. Kf3 Kg8 69.
Kg2 Kh7 70. Kf3 Rf4+ 71. Kg2 Kh6 {Weighted Error Value: White=0.34/Black=0.06}
0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "6.1"]
[White "Duda, Jan-Krzysztof"]
[Black "Le, Quang Liem"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2738"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "141"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,141,4,7,0,14,0,0,-2,16,15,29,14,41,45,49,31,50,45,74,68,76,60,75,75,
72,74,64,72,79,79,63,70,110,108,108,98,88,91,93,88,110,91,110,88,91,82,84,66,
80,79,74,74,81,74,109,95,251,251,233,234,263,274,266,264,146,112,117,0,117,117,
111,107,113,120,165,161,380,120,120,18,114,112,318,318,292,268,235,133,349,351,
332,354,352,344,343,327,378,85,83,86,88,78,109,83,126,118,497,483,428,472,584,
509,631,605,677,675,833,817,1033,1025,1539,1275,943,1283,1250,1165,2330,1230,
1727,1723,1679,1600,1519,1520]} 1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. h3 Bh5 5. d3
e6 6. Nbd2 {A07: Réti Opening: New York and Capablanca Systems.} Nf6 7. g4 Bg6
8. Nh4 {[#] The position is equal.} Bc5 $146 ({Predecessor:} 8... Bd6 9. e3
Nbd7 10. Qe2 Nf8 11. f4 N6d7 12. Ndf3 e5 13. Bd2 f6 14. O-O-O Qe7 15. fxe5 fxe5
{1-0 (38) Grischuk,A (2777)-Robson,R (2673) Chess.com INT 2020}) 9. e3 Bb6 10.
Qe2 Nfd7 11. Nxg6 hxg6 12. a3 Na6 13. b4 Bc7 14. c4 Rc8 15. Bb2 Be5 16. d4 Bf6
17. O-O Nb6 18. c5 Na4 19. Bc1 e5 20. Qd3 O-O 21. g5 Bxg5 22. dxe5 Nc7 23. Qc2
b5 24. f4 Be7 25. Nf3 Ne6 26. Rd1 f5 27. Rb1 g5 28. Rb3 $36 {[%mdl 2048] White
is more active.} Rc7 29. Nd4 Nxd4 30. exd4 gxf4 31. Bxf4 Bg5 32. Rf1 Bxf4 $2 (
32... Bh4 $16) 33. Rxf4 $18 Qg5 34. Qf2 Rcf7 35. h4 Qh6 36. Rbf3 g6 37. Rg3 Rg7
38. Rgf3 ({White should try} 38. Bh3 $16) 38... Kf7 (38... Rgf7 $1 $11 {
remains equal.}) 39. Kf1 Ke6 40. Ke1 Ra8 41. Bh3 a5 42. bxa5 Rxa5 $2 (42... Kd7
{was worth a try.} 43. Rg3 Rag8) 43. Kd1 $2 (43. h5 $1 $18 {is the precise
move to win.} Qxh5 44. Qg3) 43... Ra8 44. Qd2 (44. Kc2 $16 {Black must now
prevent h5!} Kd7 45. Qd2) 44... Ke7 (44... Rga7 $1 $11) 45. Kc2 $16 Rf7 $2 (
45... Kd8 $16 {is a better defense.}) 46. Qe1 $18 Ke6 {[#]} 47. Qg3 $1 {
aiming for h5!} Rh8 48. Bf1 ({Better is} 48. Rf2 $18) 48... Qg7 $2 (48... Rc7
$16 49. Rf2 Rcc8) 49. Rf2 Rh6 50. Qg5 Rh5 51. Qd8 {[%csl Gc5,Ge5][%cal Rd8d6]}
Qf8 {[#]} 52. Qa5 Qb8 53. Qa6 (53. Rg2 $18 {has better winning chances.} Rh6
54. Bd3) 53... Qb7 $16 54. Qxb7 Rxb7 55. Be2 Rh6 56. Kb3 Rbh7 57. h5 Rxh5 $2 {
[%mdl 8192]} (57... Rf7 $16) 58. Bxh5 $18 {White is clearly winning.} Rxh5 $16
{[%mdl 4096] Endgame KRR-KRN} 59. Kb4 Rh1 60. Rg2 Kf7 61. Ka5 Rh3 62. Ka6 Rxa3
63. Kb7 b4 64. Rh4 Kg7 65. Rgh2 {White threatens Rh7+ and mate.} Kf7 66. Rh8 f4
67. Kxc6 {R2h7+ would kill now.} Nc3 68. Kd6 {[%cal Rh2h7]} Ne4+ 69. Kxd5 {
[%cal Rh2h7]} Nc3+ 70. Kc4 Ke6 71. Kxb4 {Weighted Error Value: White=0.25/
Black=0.41} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "6.2"]
[White "Firouzja, Alireza"]
[Black "Vidit, Santosh Gujrathi"]
[Result "0-1"]
[ECO "C82"]
[WhiteElo "2759"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "58"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,58,0,0,-14,-1,0,18,21,12,0,0,0,8,13,4,0,0,0,0,0,0,-34,-36,-24,-32,
-54,-58,-51,-50,-55,-62,-62,0,-116,-34,-691,-106,-1027,-593,-741,-612]} 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 {C82: Open
Ruy Lopez: 9 c3 without 9...Be7.} Nxf2 12. Rxf2 Bxf2+ 13. Kxf2 {The position
is equal.} f6 14. Nf1 fxe5 {White must now prevent ...e4.} 15. Kg1 {Threatens
to win with Bxh7+!} Bg4 {And now ...e4 would win.} 16. Ne3 Be6 {[#]} 17. b3
$146 ({Predecessor:} 17. Bb3 e4 18. Nd4 Nxd4 19. cxd4 Qf6 20. Bd2 c5 21. Qe1
cxd4 22. Nxd5 {0-1 (42) Sevian,S (2660)-Paravyan,D (2629) Jermuk 2021}) 17...
d4 18. Qd3 g6 19. cxd4 Nxd4 20. Bb2 Nxf3+ 21. gxf3 Rxf3 22. Qe2 Qg5+ $1 {
[%mdl 64] Double Attack} 23. Ng2 Raf8 24. h4 $1 {[%cal Rh4g5]} (24. Qxe5 {
gets mated.} Qxg2+ $3 {[%mdl 512]} 25. Kxg2 Bh3+ 26. Kh1 Rf1+ 27. Rxf1 Rxf1#)
24... Qg3 25. Bxe5 Qg4 (25... Qf2+ $15 26. Qxf2 Rxf2) 26. Re1 {[#]} (26. Qe4 $1
$11 {was the only way to keep the balance.}) 26... Bd5 $40 {[%mdl 128] White
needs to defend precisely.} ({Black should try} 26... Rf1+ $1 $17 {[%mdl 512]}
27. Qxf1 Rxf1+ 28. Kxf1 Qf3+ 29. Kg1 Bd5) 27. Bd1 $2 {[%mdl 8192]} (27. Qd2 $15
Qe6 28. Bf4) 27... Qf5 $2 (27... Qh3 $19 {is more deadly. ...Re3! is the
strong threat.} 28. Qc2 Rf2 {[%mdl 64] Decoy} 29. Qxf2 Rxf2 30. Kxf2 Qxg2+ 31.
Ke3 Qxa2) 28. Bd4 {[%mdl 8192]} (28. Bc2 $17 Qe6 29. Qd2) 28... Rg3 {( -> ...
Qh3!)} 29. Bc2 Qd7 {Weighted Error Value: White=0.86/Black=1.15} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "6.3"]
[White "Naroditsky, Daniel"]
[Black "So, Wesley"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2623"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "57"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,57,35,30,0,0,0,0,-8,0,-5,5,0,14,16,50,54,48,33,41,8,0,0,0,0,0,0,0,14,
192,180,307,283,692,651,29984,29985,29992,29993,29994,29995,29995,29996]} 1. e4
e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. d3 d6 8. a4 Rb8 9.
axb5 axb5 10. Be3 {C78: Ruy Lopez: Archangelsk and Möller Defences.} (10. c3 {
is interesting.} O-O 11. Bg5 Bb6 12. Bh4 h6 13. h3) 10... Bxe3 {has lost
popularity (10...0-0).} 11. fxe3 O-O 12. Qe1 {[#] The position is equal.} Qe7
$146 ({Predecessor:} 12... Be6 13. Bxe6 fxe6 14. Ng5 Qd7 15. Ra6 Ra8 16. Rxa8
Rxa8 17. Nc3 Ne7 18. Qg3 Ng6 {1-0 (42) Arribas Robaina,M (2243)-Coimbra,M 
(2068) Batumi 2018}) 13. Nh4 g6 14. Nc3 Nb4 15. Qg3 {aiming for Nxg6!} Kg7 16.
Nf5+ Bxf5 17. Rxf5 {Hoping for Raf1.} Nd7 18. Raf1 {Rxf7+ is the strong threat.
} f6 19. Nd5 Nxd5 20. Bxd5 Nb6 21. h4 c6 22. Bxc6 Qc7 $2 {This move loses the
game for Black.} (22... Rbc8 $11 23. Bxb5 Rxc2) 23. Bxb5 $18 Qxc2 {[#]} (23...
Nd5 {keeps fighting.}) 24. h5 $1 Qxb2 $2 (24... Qc7 25. h6+ Kxh6) 25. h6+ Kh8 {
[#]} 26. Qg5 $3 {[%mdl 512] White mates.} Qxb5 (26... Nd5 27. exd5) 27. Rxf6
Rfe8 {[#]} 28. Rxg6 $1 {[%cal Rg5f6][%mdl 512]} Nd7 29. Rg7 {Weighted Error
Value: White=0.04/Black=0.75} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "6.4"]
[White "Hansen, Eric"]
[Black "Carlsen, Magnus"]
[Result "0-1"]
[ECO "C53"]
[WhiteElo "2606"]
[BlackElo "2847"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,70,63,41,60,41,93,80,90,100,95,87,93,91,87,72,84,76,64,54,39,53,65,
29,39,49,21,21,27,25,36,30,30,27,95,0,175,159,283,124,97,102,109,49,135,0,0,
-739,-732,-716,-620,-608,-595,-589,-581,-559,-543]} 1. e4 e5 2. Nf3 Nc6 3. Bc4
Bc5 4. c3 Bb6 5. d4 Qe7 6. O-O Nf6 7. Re1 d6 8. h3 h6 9. a4 a6 {C53: Giuoco
Piano sidelines.} 10. Be3 g5 ({Black should try} 10... O-O $14) 11. dxe5 dxe5 {
White is better.} 12. Bxb6 cxb6 {[#]} 13. Nbd2 $146 ({Predecessor:} 13. Nh2 g4
14. hxg4 Rg8 15. Be2 Be6 16. Na3 Rd8 17. Qc1 Rd6 18. Nc2 Nxe4 19. Qe3 {1-0 (36)
Smirnov,A (2527)-Brown,A (2293) Cammeray 2018}) 13... g4 14. hxg4 Bxg4 15. Qb3
Qc7 16. Bd5 O-O-O 17. c4 Rhg8 18. Qc3 Nd4 19. a5 b5 20. Nxd4 exd4 21. Qb3 Nxd5
22. exd5 bxc4 23. Nxc4 Kb8 $1 24. Rac1 {Strongly threatening Ne5.} Rge8 {[#]} (
24... Qf4 $11 {remains equal.} 25. Ne5 Ka8) 25. Nb6 ({Better is} 25. Rxe8 $1
$16 Rxe8 26. d6) 25... Rxe1+ $2 (25... Qf4 $1 $11) 26. Rxe1 $16 Bf5 (26... Qf4
$16 {was worth a try.}) 27. Qb4 (27. Qf3 $18 {and White stays clearly on top.}
Bc8 28. Qe4) 27... d3 28. Qd4 Qd6 29. Rc1 (29. Nc4 $16 Qb4 30. Rd1) 29... h5 {
[#]} (29... Re8 $14) 30. b4 (30. Nc4 $1 $16 {[%cal Rc4d6]} Qc7 31. Rc3) 30...
Re8 $40 {[%mdl 128] White needs to defend precisely.} 31. Qc4 $2 {[%mdl 8192]}
(31. Nc4 $11 Qxb4 32. Qf4+ Ka7 33. Qxf5) 31... d2 $19 {And now ...Re1+ would
win.Black is clearly winning.} 32. Rf1 Bg4 {Hoping for ...Re1.} 33. Qd4 d1=Q
34. Rxd1 Bxd1 35. Qxd1 {Now Qd2 and White clings on.} Qxb4 {Weighted Error
Value: White=0.60/Black=0.36} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "6.5"]
[White "Vachier-Lagrave, Maxime"]
[Black "Van Foreest, Jorden"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2751"]
[BlackElo "2698"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,67,21,27,16,18,19,13,8,15,1,6,8,60,37,31,36,46,30,72,62,57,48,42,30,
65,65,65,65,88,77,77,66,98,80,116,106,104,82,138,138,135,61,122,115,120,121,
114,115,115,108,109,110,222,212,228,227,227,227,227,222]} 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.} Nd7 {is now more promising than 6...0-0.}
7. Nc4 f6 8. c3 {The position is equal.} O-O 9. d4 {[#]} exd4 $146 ({
Predecessor:} 9... Bd6 10. O-O Nb6 11. Na5 Qe7 12. Re1 Rb8 13. h3 Qf7 14. Be3
exd4 15. Nxd4 Qg6 {0-1 (41) Caruana,F (2835)-So,W (2770) Lichess.org INT 2020})
10. cxd4 {[#] aiming for Qb3.} Nb6 11. Qb3 {Black must now prevent Nxb6+.} Be6
12. dxc5 Nxc4 (12... Bxc4 $6 13. Qc3 $16 (13. Qc2 Bd3 $16)) 13. Qc3 Ne5 14.
Nxe5 fxe5 15. Be3 Qh4 16. Qc2 ({Much weaker is} 16. Qxe5 Rae8 $11) 16... Rad8
17. O-O Rd7 18. Rad1 Rfd8 19. Rxd7 Rxd7 20. b3 Bf7 21. h3 h6 22. Kh2 Qd8 23.
Qc3 Bg6 (23... Kh7 $142) 24. Qxe5 $16 Re7 {[#]} 25. Qg3 (25. Rd1 $1 $16 {
[%cal Rd1d8][%mdl 512]} Qf8 26. Qg3 Bxe4 27. Bxh6) 25... Bxe4 ({Better is} 
25... Qd3 $14) 26. Bxh6 $1 {And now Bg5 would win.} Qd3 27. Qxd3 Bxd3 {[%mdl
4096] Endgame KRB-KRB} 28. Rd1 Bf5 29. Rd8+ Kf7 30. Be3 Re4 (30... Re8 $16 {
is a better defense.} 31. Rd1 Re5) 31. g4 $18 {White is clearly better.} Be6
32. Ra8 a6 33. Kg3 Bd5 34. Rb8 {Weighted Error Value: White=0.10/Black=0.20}
1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "6.6"]
[White "Dominguez Perez, Leinier"]
[Black "Aronian, Levon"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2758"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,96,20,20,21,24,11,17,17,22,22,11,17,11,13,17,18,17,15,11,13,20,9,27,
14,12,0,0,0,-4,-8,0,-56,-58,-116,-112,-110,-110,-149,-143,-142,-145,-142,-120,
-137,-138,-143,-143,-202,-195,-248,-254,-258,-249,-252,-247,-479,-469,-449,
-441,-505,-454,-460,-399,-564,-487,-1481,-618,-714,-714,-687,-637,-1159,-1169,
-1060,-1066,-1064,-985,-1295,-1238,-5197,-4989,-5513,-5465]} 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 {
C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Nb6 10. h3 Bh5 11.
Bb3 {The position is equal. now scores much better than the old 11.Bb5.} Qxd3
12. Nxe5 Qf5 13. Nef3 $1 Rad8 14. Qe2 Nd5 15. Ne4 Bxf3 16. Qxf3 Qxf3 17. gxf3
Bb6 {[#]} 18. a4 $146 ({Predecessor:} 18. Bg5 Nde7 19. a4 a5 20. Rad1 Rxd1 21.
Rxd1 h6 22. Bxe7 Nxe7 23. f4 Ng6 24. f5 {1/2-1/2 (51) So,W (2770)-Radjabov,T 
(2765) chess24.com INT 2021}) 18... h6 19. Rd1 Nde7 20. Rxd8 Rxd8 21. Kf1 Kf8
22. Be3 Nf5 23. Bxb6 (23. Bf4 $11) 23... axb6 $15 24. Rd1 {Black converts the
advantage convincingly.} ({Better is} 24. f4 $15) 24... Rxd1+ $17 25. Bxd1 {
[%mdl 4096] Endgame KBN-KNN} Ne5 $1 26. Ng3 {[#]} Nh4 27. Ke2 Nhxf3 28. Ke3 Ng1
29. b3 Nxh3 30. f4 {[#]} Ng6 31. Nh5 (31. Bf3 $17) 31... Ne7 $19 32. Bg4 (32.
Bf3 $142) 32... Nd5+ 33. Kf3 {[#]} g6 $1 34. Bxh3 gxh5 {KB-KN} 35. Bc8 $2 (35.
c4 Ne7 36. Bf1) 35... Nxc3 36. Bxb7 Ke7 37. Ke3 Kd6 38. Kd4 Na2 39. Ke4 (39.
Bg2 {is a better defense.}) 39... Nb4 {Black is clearly winning.} 40. Kf5 (40.
Kf3 $142 Nc6 41. Kg3) 40... Nd5 (40... c6 $142 41. Ke4 Kc7) 41. Ba6 h4 42. Kg4
h3 {White must now prevent ...h2.} 43. Be2 h2 44. Bf3 Kc5 45. f5 Nf6+ 46. Kf4
Kb4 47. Ke5 {[#]} Ng4+ $1 {[%mdl 512]} 48. Kd5 (48. Kf4 Nf2) 48... Kxb3 {
Weighted Error Value: White=0.48/Black=0.16} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "6.7"]
[White "Mamedyarov, Shakhriyar"]
[Black "Liang, Awonder"]
[Result "1-0"]
[ECO "D47"]
[WhiteElo "2782"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "125"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,125,0,4,10,69,62,74,89,72,0,0,0,0,0,92,83,104,134,100,18,21,0,0,-8,0,
0,51,55,72,70,68,63,78,81,103,98,110,88,97,55,52,75,71,61,74,57,86,84,112,70,
123,120,123,118,129,116,117,117,125,113,114,87,99,93,97,112,100,81,83,90,81,66,
68,52,84,87,83,48,87,53,66,26,35,35,40,43,70,42,524,501,702,687,475,392,12835,
12835,12835,12836,12836,12837,12841,12842,12843,12843,12845,12845,12847,12847,
12849,12849]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Bd3 dxc4 7.
Bxc4 b5 8. Bd3 Bb7 9. e4 b4 $1 {[%cal Rb4c3]} 10. Na4 {D47: Semi-Slav: Meran
System.} a6 (10... c5 $11) 11. O-O c5 12. e5 {White is better.} Nd5 13. Re1 (
13. Ng5 $16) 13... cxd4 $11 14. Nxd4 g6 15. Qg4 {[#]} Nc5 $146 {[#]} (15... Qa5
$11 {remains equal.} 16. b3 Nc5 17. Nxc5 Bxc5) ({Predecessor:} 15... Qa5 16. b3
Nc5 17. Nxc5 Bxc5 18. Bc4 Qb6 19. Bxd5 Bxd5 20. Be3 h5 21. Qf4 Qb7 22. Qf6 Rg8
23. Rac1 Be7 24. Qf4 g5 25. Qg3 Rg6 26. Qh3 Rh6 27. g4 h4 28. Qf1 {1/2-1/2 (28)
Scheiba,M (2543)-Zidu,J (2542) Remote email 2013}) 16. Bg5 $1 $16 {[%cal Rg5d8]
} Qd7 (16... h5 17. Qh4) 17. Nxc5 Bxc5 18. Nf3 (18. Nb3 $16 Bb6 19. Bh6) 18...
h6 $11 19. Bd2 Ne7 $36 {[%mdl 2048] Black has good play.} 20. Be4 (20. Bf1 {
keeps more tension.} a5 21. Rad1 Qc7 22. Nd4 Qb6 23. Be3) 20... Bxe4 21. Qxe4
Qd5 ({Better is} 21... Qa7 $11) 22. Bxb4 $14 Qxe4 23. Rxe4 Bxb4 24. Rxb4 Nd5
25. Rc4 Kd7 26. Rac1 Rhb8 27. R1c2 a5 28. Ne1 Nb4 29. Rd2+ Ke8 {[#]} 30. a3 $1
{[%cal Ra3b4]} Nd5 31. Nd3 Rb5 32. Rdc2 Rab8 33. Rc8+ Ke7 (33... Rxc8 $14 34.
Rxc8+ Kd7) 34. Rxb8 $16 Rxb8 {[%mdl 4096] Endgame KRN-KRN} 35. Kf1 g5 36. g3
Nb6 37. Ke2 Na4 38. Kd2 Kd8 39. Kc1 Rb3 40. Rd2 {Nc5+ is the strong threat.}
Kc7 41. Kc2 Rb5 42. Re2 (42. b3 {is more complex.} Nb6 43. Kc3 h5 44. Rc2 Kd8
45. Re2) 42... Nc5 43. Nxc5 Rxc5+ {KR-KR} 44. Kb3 Kb6 45. Re4 Rc1 46. Re3 Rh1
47. Rf3 Rxh2 48. Rxf7 {And now Kc4 would win.} Kb5 $1 49. Kc3 h5 $1 50. Kd3 h4
51. gxh4 gxh4 52. Ke2 Rh1 $2 {[%mdl 8192] This move loses the game for Black.}
({Black should play} 52... Kc4 $14) 53. Re7 $18 Rb1 {next ...h3 is good for
Black.} 54. Rxe6 Rxb2+ 55. Kf3 Kc4 $2 (55... Ra2 56. Rh6 Rxa3+ 57. Kg4 a4) 56.
Rh6 {White is clearly winning.} Kd5 57. Rxh4 Rb3+ 58. Kf4 Rxa3 59. Rh6 Ra1 60.
Kf5 a4 61. f4 a3 62. Ra6 a2 63. e6 {Weighted Error Value: White=0.13/Black=0.30
} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "6.8"]
[White "Artemiev, Vladislav"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "A20"]
[WhiteElo "2704"]
[BlackElo "2776"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,114,10,23,7,8,14,21,3,12,-11,-11,-22,-17,-18,-18,-17,-16,-28,0,-16,
-14,-21,-21,-21,-18,-23,-21,-12,-13,-13,-14,-8,0,0,29,27,43,35,42,50,44,42,45,
50,45,45,43,30,33,30,27,24,24,24,24,24,24,24,24,0,0,0,0,0,0,0,5,3,3,3,3,3,3,3,
3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,0,0,0,0,0,0,-5,-5,-5,-5,-5,-5,-5,0,0,0]} 1.
c4 e5 2. g3 Nf6 3. Bg2 c6 4. Nf3 e4 5. Nd4 Qb6 6. e3 {A20: English Opening: 1..
.e5.} d5 7. cxd5 cxd5 8. O-O Nc6 9. d3 Bg4 {[#]} 10. Qd2 $146 ({Predecessor:} 
10. Qa4 Qb4 11. Qxb4 Nxb4 12. dxe4 dxe4 13. Nc3 Bc5 14. Nxe4 Bxd4 15. exd4 Nc2
16. Nxf6+ gxf6 17. Bxb7 {1-0 (49) Bourdonnais,L (2190)-Bakalarz,M (2308)
Agneaux 2013}) 10... Bb4 11. Nc3 {[%cal Rd3e4]} O-O 12. dxe4 dxe4 13. h3 Bd7 (
13... Bh5 {is interesting.} 14. g4 Bg6 15. Nxc6 Qxc6 16. Qd4 Bxc3 17. Qxc3 Qxc3
18. bxc3 h5) 14. Nxc6 Bxc6 15. Qc2 Bxc3 16. Qxc3 Rac8 17. Qb3 Qxb3 18. axb3
Rfd8 19. Rxa7 Bb5 20. Re1 Ba6 21. b4 Rd5 22. b3 Rd3 23. b5 Bxb5 24. Rxb7 Rxb3
25. Bf1 Bc4 26. Rxb3 Bxb3 27. Bb2 Nd7 28. Bd4 Nf8 29. Rb1 Bc4 30. Bxc4 Rxc4 $11
{[%mdl 4096] Endgame KRB-KRN} 31. Rb8 {[#] Strongly threatening Bb2.} f6 32.
Bb2 {Threatens to win with Ba3.} Kf7 33. Rb7+ Kg8 34. Ba3 {Hoping for Rb8!} Ng6
{The position is equal.} 35. Bd6 Rc6 36. Bb8 (36. Bc7 {is more complex.} Re6
37. Kg2 Re7 38. Rb8+ Kf7 39. Bd6) 36... Re6 37. Kg2 (37. Kh2 {seems wilder.} h5
38. g4 h4 39. g5 Re8 40. gxf6 gxf6 41. Rb5) 37... Ne5 38. Bxe5 Rxe5 {KR-KR} 39.
g4 h5 40. Kg3 hxg4 41. hxg4 g5 42. Kg2 Kf8 43. Kf1 Re7 44. Rb6 Kf7 45. Ke2 Kg6
46. Rb5 Re6 47. Rd5 Ra6 48. Rd4 Re6 49. Kd2 Re8 50. Kc3 Ra8 51. Rxe4 Ra2 $1 52.
f4 gxf4 53. exf4 Rg2 54. g5 fxg5 55. fxg5 Kxg5 56. Rd4 Rg4 57. Rxg4+ Kxg4 {
Weighted Error Value: White=0.03/Black=0.02} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "7.1"]
[White "Giri, Anish"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "D97"]
[WhiteElo "2776"]
[BlackElo "2738"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,98,33,25,35,26,35,37,41,39,37,47,35,48,58,43,62,14,19,22,21,30,15,15,
15,19,10,9,8,8,9,9,26,16,25,14,39,39,39,39,40,40,60,55,60,41,46,35,35,30,37,35,
42,35,38,37,37,37,41,41,41,41,50,23,23,22,23,0,30,16,16,0,0,3,10,0,0,0,0,0,0,0,
0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7.
e4 Nc6 8. Be2 e5 $1 {[%cal Re5d4][%mdl 4] now scores much better than the old
8...Bg4. D97: Grünfeld: Russian System: 7 e4, replies other than 7...Bg4.} 9.
d5 (9. Nxe5 Nxd4 10. O-O {[#]} Nxe4 $1 $17 {[%mdl 512]}) 9... Nd4 10. Nxd4 exd4
{White is slightly better.} 11. Qxd4 c6 12. Qc4 b5 13. Qxc6 Bd7 14. Qd6 Re8 15.
e5 b4 16. Qxb4 ({Wrong is} 16. exf6 $2 bxc3 17. O-O (17. fxg7 $2 cxb2 18. Bxb2
Rxe2+ {[%mdl 64] Double Attack} 19. Kf1 Rxb2 $19) (17. bxc3 $2 Rxe2+ 18. Kf1
Rxa2 $19) 17... Rxe2 $19) 16... Rxe5 17. O-O a5 18. Qd4 Nxd5 $1 {[#]} 19. Bh6
$1 Nxc3 {[#]} 20. Qxc3 $146 {next Bxg7 is good for White.} ({Predecessor:} 20.
bxc3 Bf6 21. Be3 Re8 22. Qd2 Ba4 23. Bd4 Qd6 24. Bf3 Rad8 25. Rfe1 Rxe1+ 26.
Rxe1 Bxd4 27. cxd4 Qxd4 28. Qxa5 {1/2-1/2 (81) Baenziger,F (2392)-Fecker,N 
(2309) Flims 2021}) 20... Rc8 21. Bxg7 Rxc3 22. Bxe5 Rc5 23. Bc3 Qc7 24. Rfd1
Rxc3 25. bxc3 Qxc3 26. Rac1 Qe5 27. Bc4 Bb5 28. Re1 Qf5 29. g3 Kg7 30. Bxb5 (
30. Red1 {feels hotter.} Bc6 31. Bd5 Ba4 32. Rd4 Qe5 33. Rxa4 Qxd5 34. Rac4)
30... Qxb5 $14 {[%mdl 4096] Endgame KQ-KRR} 31. Rc2 Qa4 32. Rec1 g5 33. h3 h5
34. Rc5 Kg6 35. R1c2 f6 36. R5c4 Qd7 37. Kh2 Qd3 38. R4c3 Qd6 39. Rc6 Qd3 40.
R6c3 Qd6 41. Rc5 Qd3 {The position is equal.} 42. a4 Qb3 43. R5c4 Qd3 44. h4
gxh4 45. gxh4 Qd6+ 46. Kg2 Qd5+ 47. Kh2 Qd6+ 48. Kg2 Qd5+ 49. Kh2 Qd6+ {
Weighted Error Value: White=0.05/Black=0.03} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "7.2"]
[White "Liang, Awonder"]
[Black "Artemiev, Vladislav"]
[Result "0-1"]
[ECO "C72"]
[WhiteElo "2587"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "50"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,50,46,36,38,52,33,25,38,46,48,25,37,23,35,29,25,0,2,7,-4,-54,-41,-97,
0,-5,0,-341,-343,-339,-326,-327,-326,-326,-312,-312,-310,-308,-310,-29957,
-6579,-29992,-29993]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c4
Nge7 {C72: Ruy Lopez: Deferred Steinitz: 5 0-0.} 7. Nc3 g6 8. d4 {Threatens to
win with Bg5.} exd4 {White has an edge.} 9. Nd5 Nxd5 {[#]} 10. cxd5 $146 ({
Predecessor:} 10. Bxc6 Nf6 11. Bxb7 Ra7 12. Bd5 c5 13. Re1 Be7 14. Bh6 Ng4 15.
Qd2 Ne5 16. Nxe5 dxe5 17. Bg7 Bg5 18. Qd3 Bf6 19. Qf3 Bf5 20. Bxh8 {1-0 (20)
Fernandez Romero,E (2488)-Martin Garcia,G (2241) Padron 2015}) 10... Ne5 11.
Nxd4 Bg7 12. Bb3 Bb5 13. Re1 Qh4 14. Nxb5 axb5 15. h3 O-O 16. Qc2 (16. Bc2 $15)
16... Rfe8 ({Black should try} 16... f5 $17 {...f4 is the strong threat.} 17.
exf5 Rxf5) 17. Bd2 Re7 18. f4 $2 {[%mdl 8192] [#]} (18. Rac1 $11 {and White
has nothing to worry.}) 18... Nf3+ $1 $19 {[%mdl 512]} 19. gxf3 {Black must
now prevent Kg2.} Qg3+ {[%mdl 64] Double Attack} 20. Kh1 Qxh3+ 21. Kg1 {[#]}
Qg3+ $1 ({Weaker is} 21... Qxf3 22. e5 $11) 22. Kh1 Qxf3+ 23. Kh2 {[#]} Rae8 $1
{Hoping for ...Re5!} 24. e5 $2 (24. Be3 $19 Rxe4 25. Qf2 Qh5+ 26. Kg2 Qg4+ 27.
Kh2 Bxb2 28. Bd1) 24... Bxe5 25. Qe4 {[#]} Bxf4+ $1 {[%mdl 512] Weighted Error
Value: White=1.01/Black=0.06} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "7.3"]
[White "Aronian, Levon"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2782"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "27"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,27,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4
Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 d5 9. exd5 Nxd5 10. Qb3 Na5 11. Qa4+ Nc6 12. Qb3 Na5
13. Qa4+ Nc6 {[#]} 14. Qb3 $146 ({Predecessor:} 14. Ke2) 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "7.4"]
[White "Van Foreest, Jorden"]
[Black "Dominguez Perez, Leinier"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2698"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "59"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,59,-4,-14,0,-11,-10,-13,-7,-11,-4,-31,0,0,0,0,-2,-2,0,-48,-41,-31,
-39,-32,-33,-56,58,75,67,62,96,104,96,97,108,102,211,203,400,405,433,419,431,
420,422,408]} 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7.
e4 b5 8. Bd3 Bb7 9. e5 {9.e5 scores better than 9.Bg5.} Nd5 {D27: Queen's
Gambit Accepted: Classical main line: 7 e4!? and 7 a4.} 10. Nc3 {[#]} cxd4 $146
({Predecessor:} 10... Nxc3 11. bxc3 Be7 12. a4 b4 13. dxc5 bxc3 14. Be3 Nd7 15.
Rc1 Bxf3 16. Qxf3 Nxe5 17. Qe4 Nxd3 {0-1 (32) Kretov,E (2269)-Zierk,S (2499)
Chess.com INT 2021}) 11. Nxd5 Qxd5 {The position is equal.} 12. Re1 Nc6 13. Bd2
Nb4 14. Be4 Qd7 15. a4 d3 {...Nc2 is the strong threat.} 16. axb5 Nc2 17. Rxa6
Rxa6 (17... Nxe1 $2 18. Rxa8+ Bxa8 19. Bxa8 $18) 18. bxa6 Bxa6 19. Rf1 Be7 20.
Ng5 h6 {[#]} (20... Bxg5 $15 21. Bxg5 h6) 21. Qf3 $1 $14 O-O ({Not} 21... hxg5
$2 22. Bc6 $18) 22. Nh7 Rc8 {[#] Threatens to win with ...Nd4.} 23. Nf6+ $1
Bxf6 ({And not} 23... gxf6 24. Bxh6 Kh8 25. exf6 Rg8 26. Qh3 Rxg2+ 27. Bxg2
Bxf6 28. Bg5+ Kg7 29. Qh6+ Kg8 30. Bxf6 Qe8 31. Qh8#) 24. exf6 Qd8 25. Bc3 $40
{[%mdl 128] aiming for Qg4! White has strong attack.} Nd4 {[#]} (25... g6 $16)
26. Qg4 $1 $18 {[%csl Gf6][%cal Rg4g7]} Qxf6 (26... Ne2+ {was called for.} 27.
Kh1 g5) 27. Bxd4 h5 ({But not} 27... Qxd4 $2 {[#]} 28. Bh7+ $1 {[%mdl 512]}
Kxh7 29. Qxd4 $18) 28. Bxf6 {[%csl Gf6][%cal Rg4g7]} hxg4 29. Bc3 f5 {[#]} 30.
Ra1 $1 {Weighted Error Value: White=0.04/Black=0.28} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "7.5"]
[White "Carlsen, Magnus"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1-0"]
[ECO "D80"]
[WhiteElo "2847"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,73,0,0,-18,0,0,80,77,70,73,72,79,79,63,84,76,84,93,84,88,87,87,90,91,
90,72,122,97,100,89,154,138,181,166,151,150,137,129,136,145,169,143,142,150,
275,166,165,173,263,275,285,288,367,355,452,450,583,486,495,470,538,516,745,
745,716,694]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. h4 c5 5. cxd5 Nxd5 {[#]} 6. Na4
$146 {D80: Grünfeld: Unusual White 4th moves and 4 Bg5.} ({Predecessor:} 6.
dxc5 Nxc3 7. Qxd8+ Kxd8 8. bxc3 Bg7 9. Kd2 Bf5 10. f3 Nd7 11. e4 Be6 12. c6
bxc6 {1/2-1/2 (23) Drazic,S (2469)-Popov,I (2652) Chennai 2013}) 6... Nc6 7. e4
Nb6 ({Don't play} 7... Nxd4 $6 8. exd5 Bg7 9. Nc3 $16) (7... Nf6 $11) 8. d5 $16
{White is better.} Ne5 9. h5 Nxa4 10. Qxa4+ Bd7 11. Qa3 Qb6 12. Qc3 Qb4 13.
Qxb4 cxb4 14. f4 $36 {[%mdl 2048] White is in control.} Ng4 15. hxg6 fxg6 16.
e5 Bf5 17. Be2 Bg7 18. Bf3 O-O 19. Ne2 h5 (19... Rac8 $142) 20. Nd4 Bd7 21. Bd2
Rac8 22. Rc1 Rxc1+ 23. Bxc1 Rc8 {[#]} 24. Ke2 $1 Rc4 25. Kd3 Rc5 {And now ...
Nf2+ would win.} 26. Be3 Bh6 (26... Nxe3 $16 {was called for.} 27. Kxe3 Bh6)
27. g3 {Hoping for e6.} Nxe3 28. Kxe3 a5 (28... Kg7 $142 29. Ke4 Kg8) 29. Be4
$18 Kg7 30. Nb3 Rc8 31. Nxa5 Ra8 32. Nxb7 {White is clearly winning.} Rxa2 33.
Nc5 Bg4 34. Nd3 g5 35. f5 h4 36. gxh4 gxh4+ 37. Kd4 {Black did not feel at
home in the position after the opening.  Weighted Error Value: White=0.09/
Black=0.32} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "7.6"]
[White "So, Wesley"]
[Black "Hansen, Eric"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2772"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,97,13,13,13,5,2,12,4,29,0,57,0,0,0,-6,-25,-21,-43,0,-17,-9,-9,-7,-23,
0,0,0,0,0,0,0,0,41,0,0,0,0,0,0,-22,-21,-31,-31,-58,-61,-62,-48,-96,-88,-64,-75,
-98,-95,-109,-87,-89,-79,-39,0,0,0,0,0,0,0,0,0,0,0,0,0,18,103,103,325,317,300,
311]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a6 7. Re1 O-O 8.
h3 h6 9. Bb3 Re8 10. Nbd2 Ba7 11. Nf1 Be6 12. Bc2 {C54: Giuoco Piano: 4 c3 Nf6,
main lines with 5 d4 and 5 d3.} d5 13. exd5 Qxd5 14. Ng3 {The position is
equal.} Rad8 15. Qe2 Bc8 {[#]} (15... Qd7 $11) 16. Nh4 $146 ({White should play
} 16. b4 $14) ({Predecessor:} 16. Bd2 Bc5 17. b4 Bf8 18. a4 b6 19. Rab1 b5 20.
axb5 axb5 21. Ne4 Qe6 22. d4 Nxe4 23. Bxe4 {1/2-1/2 (31) Lagno,K (2546)
-Muzychuk,A (2535) Caleta 2021}) 16... Ne7 $11 {[%cal Bc6e7,Be7g6,Bg6f4][%mdl
32]} 17. Bd2 g5 18. Nf3 Ng6 $1 19. Qf1 Nf4 (19... Bxh3 $5 20. Be3 Qxf3 21. Bxa7
Qc6 22. gxh3 Nh4 $11) 20. Bxf4 gxf4 21. Ne4 Nxe4 22. dxe4 Qc5 23. Bb3 Kg7 24.
Rad1 c6 25. Qe2 a5 26. Nh4 b5 27. a3 Qe7 28. Qh5 a4 29. Ba2 Qf6 30. Rf1 Rf8 31.
Nf3 Bb8 32. c4 Rxd1 33. Rxd1 Be6 34. Ra1 Rd8 $1 (34... bxc4 $6 35. Rc1 $11) 35.
cxb5 Bxa2 36. Rxa2 Rd1+ $1 37. Kh2 cxb5 (37... Qe6 38. Nh4 $1 $16 {[%mdl 512]})
38. Nh4 Rd2 39. Ra1 Ba7 (39... Rxb2 $2 40. Rc1 $18) (39... Kh7 $15) 40. Rc1 {
Nf5+ is the strong threat.} Bxf2 41. Nf5+ Kh7 42. Rc7 Bg3+ $1 43. Kh1 Rxb2 44.
Rxf7+ $40 {[%mdl 192] Double Attack. White is up to no good.} Kh8 {( -> ...
Rb1+)} ({Much worse is} 44... Kg8 $6 45. Rd7 $16 (45. Rxf6 $2 {is a self mate.}
Rb1+ 46. Qd1 Rxd1#) (45. Ne7+ Kh8 $11)) 45. Rd7 {Qe8+ would kill now.} (45.
Nxg3 {leads to mate.} fxg3 46. Qd1 Qxf7 47. Qd3 {[#]} Rxg2 $3 {[%mdl 512]} 48.
Qd8+ Kg7 49. Qe7 Rh2+ {[%mdl 64] Double Attack} 50. Kg1 Qxe7 51. Kf1 Qxa3 52.
Kg1 Qc1#) 45... Rb1+ 46. Rd1 Rxd1+ $1 47. Qxd1 b4 $2 (47... Bf2 $16) 48. axb4
$18 a3 {Threatens to win with ...a2.} 49. Qa1 {Weighted Error Value: White=0.
09/Black=0.13} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "7.7"]
[White "Vidit, Santosh Gujrathi"]
[Black "Naroditsky, Daniel"]
[Result "1/2-1/2"]
[ECO "E68"]
[WhiteElo "2726"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,77,38,39,40,25,27,0,0,0,0,7,42,43,56,22,29,25,31,0,0,0,0,0,0,0,0,-13,
-22,-33,-24,-26,-8,-1,0,0,0,-26,-30,-106,-106,-108,-54,-114,-120,-229,0,0,0,0,
0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7
7. O-O e5 8. e4 exd4 9. Nxd4 Nc5 10. h3 Re8 11. Re1 Bd7 $1 {[%mdl 4] is more
profitable than 11...a5 at the moment.} 12. Rb1 a5 {E68: King's Indian:
Fianchetto: 6...Nbd7 7 0-0 e5 8 e4.} 13. Kh2 h5 14. Ndb5 Bc6 {[%cal Rc5e4]} 15.
Qc2 h4 16. g4 {[#]} Bxb5 $146 (16... g5 $5) ({Predecessor:} 16... g5 17. Kg1
Nfd7 18. Be3 Ne6 19. Ne2 Bxb5 {1/2-1/2 (19) Lingnau,C (2423)-Kroeze,F (2370)
Germany 2019}) 17. cxb5 d5 18. Nxd5 Nxd5 19. Qxc5 {[#] And now Rd1 would win.}
Nb4 20. Bg5 Be5+ 21. Qxe5 $1 Rxe5 22. Bxd8 Rxd8 23. Bf1 Nxa2 24. Ra1 Nb4 25.
Rxa5 Rd2 26. Kg1 b6 27. Ra7 Rc5 28. e5 Nc2 29. Rc1 Rxe5 30. Rxc7 (30. b3 $11 {
remains equal.}) 30... Nd4 $1 $17 {[%csl LRb2,LRb5]} 31. Rb7 Re3 32. Rc8+ (32.
fxe3 $2 {is a self mate.} Nf3+ 33. Kh1 Rh2#) (32. Rxb6 $15 Nf3+ 33. Kg2) 32...
Kg7 33. Bc4 ({But not} 33. Rxb6 $2 {[#]} Rg3+ $3 {[%mdl 512]} 34. Bg2 Nf3+ 35.
Kf1 Rd1+ 36. Ke2 Re1+ 37. Kd3 Rxg2 $19) (33. Rc3 $17 {was the only defense.}
Re1 34. Rcc7 Ne2+ 35. Kh2 Rxf1 36. Rxf7+ Kh6 37. Rbe7) 33... Rg3+ $2 34. fxg3
$11 {The position is equal.} Nf3+ 35. Kf1 Nh2+ 36. Ke1 Nf3+ 37. Kf1 Nh2+ 38.
Ke1 Nf3+ 39. Kf1 {Weighted Error Value: White=0.20/Black=0.17} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "7.8"]
[White "Le, Quang Liem"]
[Black "Firouzja, Alireza"]
[Result "0-1"]
[ECO "E07"]
[WhiteElo "2709"]
[BlackElo "2759"]
[Annotator "TA"]
[PlyCount "56"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,56,26,18,25,16,7,29,20,7,13,24,17,29,0,-7,-58,-57,-59,-49,-72,-62,
-119,-112,-101,-77,-139,-133,-142,-95,-518,-516,-628,-614,-566,-623,-609,-629,
-641,-660,-1086,-1058]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. g3 Be7 6.
Bg2 O-O 7. O-O dxc4 8. e4 Rb8 9. a4 a6 10. a5 {E07: Closed Catalan: Main Line 
(5 Nf3 0-0 6 0-0 Nbd7).} b5 11. axb6 $1 Nxb6 12. Qe2 {White has an edge.} Bb7
13. Rd1 {[#]} Ne8 $5 $146 {[%mdl 8] New and interesting.} ({Predecessor:} 13...
Bb4 14. Ne5 a5 15. Bf4 Nfd7 16. Ng4 Rc8 17. h4 Qe7 18. Ne3 Rfe8 19. e5 Bxg2 20.
Kxg2 {1-0 (36) Vachier Lagrave,M (2769)-Norowitz,Y (2617) Chess.com INT 2015})
14. Be3 Bb4 15. d5 exd5 16. Bxb6 (16. Nxd5 $11 Nxd5 17. exd5) 16... cxb6 $15
17. Nxd5 Bxd5 18. exd5 Nd6 19. Rxa6 (19. Nd4 $15 Qf6 20. Nc6) 19... Re8 $17 20.
Qc2 Bc5 21. Raa1 ({White should try} 21. Rf1) 21... Qf6 22. Re1 b5 23. b3 $2 {
[%mdl 8192] [#] This move loses the game for White.} (23. Rxe8+ $17 {was the
crucial defense.} Rxe8 24. Ra6) 23... Ne4 $1 $19 {[%mdl 576] Deflection. Black
is clearly winning.} 24. Rxe4 (24. Reb1 Bxf2+) 24... Qxa1+ 25. Bf1 Rxe4 26.
Qxe4 Qb2 27. Be2 cxb3 28. Ng5 Qc1+ {[%mdl 64] Double Attack.  Weighted Error
Value: White=0.90/Black=0.04} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "8.1"]
[White "Duda, Jan-Krzysztof"]
[Black "Firouzja, Alireza"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2738"]
[BlackElo "2759"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,116,10,13,2,-17,0,-9,-20,-25,-19,-25,-37,-59,-60,-56,-48,-51,-41,-43,
-27,-68,-66,-69,-63,-63,-70,-64,-63,-61,-51,-78,-20,-18,-20,-15,-14,-33,-25,
-31,-29,-35,-35,-31,-19,-21,-16,-17,-9,-21,-3,-15,-12,-25,-14,-44,-40,-25,-25,
-25,-25,-25,-27,-19,-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,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 O-O 5.
Be2 d6 6. h3 c5 7. O-O Nc6 8. c3 cxd4 {A48: 1 d4 Nf6 2 Nf3 g6: Torre, London
and Colle Systems.} 9. cxd4 Qb6 10. Na3 Be6 {[#]} 11. Qd2 $146 ({Predecessor:} 
11. Ng5 Bd5 12. b3 e5 13. Bh2 exd4 14. Bxd6 Rfd8 15. Nc4 Bxc4 16. Bxc4 Rxd6 17.
Nxf7 {0-1 (35) Zlotnik,A (2186)-Babarykin,S (2409) Moscow 2020}) 11... Rac8 12.
Rfc1 Qb4 13. Nc2 Qxd2 ({Avoid the trap} 13... Qxb2 $2 14. Rcb1 $18) 14. Nxd2
Nd5 15. Bg3 Ncb4 16. Nxb4 Nxb4 17. Rxc8 Rxc8 18. a3 Nd5 19. Bd1 f5 20. Bh2 Kf7
21. Kf1 Nb6 22. Ke2 Nc4 (22... g5 $17) 23. Nxc4 $11 Bxc4+ 24. Kd2 Bd5 25. f3 e5
26. dxe5 dxe5 27. Rc1 Rxc1 28. Kxc1 $15 {[%mdl 4096] Endgame KBB-KBB} Ke6 29.
Bg1 Bc4 30. g4 a6 31. Bf2 e4 32. gxf5+ Kxf5 33. Bc2 Bd5 34. Bh4 g5 35. fxe4+
Bxe4 36. Bxe4+ Kxe4 37. Bxg5 {KB-KB} Kd3 38. Kb1 $1 Bf8 {The position is equal.
} 39. Ka2 $1 h5 40. Kb3 Bc5 41. Ka4 $1 b6 42. e4 Bd4 43. b4 $1 {[%cal Bb2b4,
Bb4b5][%mdl 32]} Kxe4 44. b5 $1 {[%cal Rb5a6]} a5 45. Kb3 Be3 46. Bd8 Kd3 47.
a4 Bd4 48. Bg5 Bc5 49. Bd8 Bg1 50. Bh4 Bd4 51. Bd8 Bf2 52. h4 Be3 53. Be7 (53.
Bg5 {is interesting.} Bf2 54. Be7 Bd4 55. Bg5 Bf2) 53... Bd4 54. Bd8 $1 Be3 55.
Be7 Bg1 56. Bd8 Bf2 57. Be7 Bd4 58. Bd8 Be3 {Weighted Error Value: White=0.04/
Black=0.05} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "8.2"]
[White "Naroditsky, Daniel"]
[Black "Le, Quang Liem"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2623"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "143"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,143,16,19,18,25,12,57,28,48,45,97,105,154,160,197,110,110,98,117,14,
12,19,9,9,292,268,256,256,306,292,267,271,436,206,224,110,244,241,316,98,97,96,
102,108,114,73,80,35,42,38,46,38,23,35,135,134,128,117,86,118,137,115,120,120,
265,122,128,125,127,58,55,55,62,62,169,167,195,189,293,292,298,304,281,295,295,
290,229,204,195,166,173,158,241,181,183,222,515,219,244,155,202,0,222,169,354,
367,262,118,658,632,293,8,8,8,29975,29970,29970,29969,29977,29978,29978,29979,
29980,0,29977,29978,29976,29978,29983,29984,29985,29982,29982,29983,29982,
29983]} 1. b3 d5 2. Bb2 Bf5 3. d3 Nf6 4. Nd2 e6 5. g3 h6 6. Bg2 {A01:
Nimzowitsch-Larsen Opening.} Bh7 7. e4 a5 8. a3 {[#] White is slightly better.}
a4 $146 ({Predecessor:} 8... c6 9. Nh3 Be7 10. O-O Na6 11. Nf4 O-O 12. Re1 b5
13. Qe2 Nc5 14. Rad1 Rc8 {1/2-1/2 (50) Nihal,S (2620)-Kamsky,G (2658) Biel 2021
}) 9. b4 c5 (9... dxe4 $14 10. Nxe4 Nxe4 11. Bxe4 c5) 10. exd5 $16 cxb4 11.
dxe6 bxa3 12. Bxa3 (12. exf7+ $1 $18 Kxf7 13. Bxf6 Qxf6 14. Bxb7 Qe7+ 15. Be4
Bxe4 16. Nxe4 (16. dxe4 Nc6 $16)) 12... Bxa3 13. Rxa3 Qe7 14. Nc4 ({White has
to play} 14. Qa1 $1 $16) 14... Ra6 $1 $11 15. Ne2 b5 $1 {[%cal Rb5c4] [#]} 16.
Qb1 $1 Qc5 {[%mdl 8192] [#]} (16... Rxe6 $11 17. Qxb5+ {[%mdl 64] Double Attack
} Nbd7) 17. d4 $1 $18 Qxc4 18. Rc3 Qxe6 19. Qxb5+ {[%mdl 64] Double Attack} Ke7
20. Re3 $1 Ne4 $2 (20... Be4) 21. Bxe4 (21. Nf4 $142 Qd6 22. Bxe4 Bxe4 23.
Rxe4+ Kd8 24. O-O) 21... Bxe4 {[#]} 22. d5 $1 {[%mdl 512]} Qb6 (22... Rb6 $16
23. Qa5 (23. dxe6 $2 {too greedy.} Rxb5 24. O-O Ba8 $19) (23. Qc5+ Qd6 $16)
23... Rd8) 23. Rxe4+ Kd6 24. Qxb6+ (24. Qc4 $1 $18) 24... Rxb6 $16 25. Nc3 a3 {
Strongly threatening ...Rb1+!} 26. Kd2 Ra6 27. Ra1 Nd7 28. Ra4 Rxa4 29. Nxa4
$14 {[%mdl 4096] Endgame KRN-KRN} Ne5 30. f4 Nc4+ 31. Kc3 Rc8 (31... Ne3 $1 $14
) 32. Kd4 $16 Nb2 33. Nb6 Rxc2 34. Rxa3 {aiming for Ra7.} Rd2+ {[#]} 35. Ke4 $1
Re2+ {[#]} 36. Kf3 $1 {[%cal Rf3e2]} Rc2 (36... Rd2 $16 {was necessary.}) 37.
Ra7 (37. Ra2 $18 {is the precise move to win.}) 37... Rc7 38. Ra6 Rb7 39. Ke4 (
{White should try} 39. Nc4+ $16 Kxd5 40. Ne3+ Kc5 41. Nf5) 39... Kc5 $14 40.
Nc8 {Black must now prevent Rc6+.} Rb4+ 41. Kf3 $1 Kxd5 ({Black should play} 
41... Nc4 $14) 42. Ne7+ $18 Kc4 43. Nf5 Rb3+ (43... g5 $142 44. Nxh6 (44. Rxh6
gxf4 45. Kxf4 Nd3+ 46. Kg5 Kc5 $18) 44... gxf4 45. gxf4 (45. Nxf7 Nd3 $16)
45... Nd3) 44. Kg4 h5+ 45. Kh4 Nd3 46. Nxg7 Rb2 47. h3 ({Not} 47. Nxh5 Rxh2+
48. Kg4 f5+ 49. Kg5 Nc5 $16) 47... Rh2 48. Nxh5 Nf2 49. g4 {Hoping for Kg3.}
Rxh3+ 50. Kg5 Rh1 (50... Kb5 $16 51. Ra7 Ne4+ 52. Kf5 Nd6+ 53. Kg5 Rb3) 51. Ra7
Ne4+ 52. Kf5 Re1 (52... Nd6+ {was worth a try.} 53. Ke5 Kc5 54. Rc7+ Kb6) 53.
Ra4+ (53. Rxf7 $142 {Threatens to win with Rc7+.} Nd6+ 54. Kg6) 53... Kd3 54.
Ra3+ Kd4 55. Ra4+ Kd3 56. Ra6 Kd4 $2 (56... Nc5) 57. g5 Kc5 58. Ng7 (58. Ra7
$18 {is more deadly.}) 58... Nd6+ $2 {[%mdl 8192]} (58... Kb5 $16 59. Ra3 Nd6+
60. Kg4 Kb4) 59. Kf6 Rf1 60. Rxd6 $2 Kxd6 {KR-KN} 61. f5 Ra1 $2 {[%mdl 8192]} (
61... Rg1 $11) 62. Kxf7 Ke5 63. f6 Ra6 64. Kg6 Kf4 65. Kh6 Ke5 66. Kg6 Kf4 $1
67. Nh5+ {White mates.} Kg4 68. Kh6 Ra5 69. f7 Rxg5 70. Nf6+ Kf5 71. Nh7 Rg6+
72. Kh5 {Weighted Error Value: White=0.51/Black=0.47} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "8.3"]
[White "Hansen, Eric"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2606"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "195"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,195,22,34,4,13,0,-3,-14,-14,-15,-7,-26,-10,-20,-19,-19,-8,-5,-9,-8,
-12,-11,-12,-12,-4,-22,-22,-48,-20,-28,0,0,0,0,6,15,20,0,0,-34,-37,-54,-54,
-103,-114,-113,-23,-20,-28,-87,-87,-73,-83,-71,-77,-115,-127,-161,-40,-41,-42,
-114,-54,-54,-54,-54,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,
-20,-8,-8,-8,-8,-8,-8,-8,-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,-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,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,-8,0,
0,0,0,0,0]} 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. c3 Bg5 $1 {[%mdl 4]
is currently scoring better than 12...0-0.} 13. g3 {B33: Sicilian: Pelikan and
Sveshnikov Variations.} Ne7 14. h4 Bh6 15. Nxe7 Qxe7 16. Bg2 O-O 17. Nc2 a5 18.
O-O Be6 19. Re1 {[#]} Rac8 $146 ({Predecessor:} 19... Rfb8 20. Ne3 Bxe3 21.
Rxe3 b4 22. Qd2 Ra6 23. Bf1 Rc6 24. cxb4 axb4 25. a4 Qc7 26. Bb5 Rc5 27. Qxb4 {
1/2-1/2 (90) Gholami,A (2434)-Lei,T (2514) Riga 2017}) 20. Ne3 g6 21. Qd3 b4
22. cxb4 axb4 23. a4 bxa3 24. bxa3 Rc5 25. Red1 Ra8 26. a4 Rca5 27. Nf5 gxf5
28. exf5 d5 $1 29. fxe6 fxe6 30. Qc2 e4 $36 {[%mdl 2048] White is under
pressure.} 31. Rab1 Rxa4 32. Rb6 Ra2 33. Qc6 Rf8 $1 {[%cal Rf8f2]} 34. Rf1 {[#]
} Bg7 (34... Raxf2 $1 $17 {[%mdl 512]} 35. Rxf2 Be3 {[%mdl 64] Double Attack,
Pin}) 35. Bh3 $11 Kh8 {Threatens to win with ...Raxf2.} 36. Rb7 (36. Ra6 $1 $11
{remains equal.} Rxa6 37. Qxa6) 36... Qf6 $17 37. Qxe6 Rxf2 38. Qxf6 R2xf6 39.
Rxf6 Bxf6 {[%mdl 4096] Endgame KRB-KRB} ({Of course not} 39... Rxf6 $6 40. Rd7
$11) 40. Rd7 Be5 (40... Bd4+ $19 41. Kh1 e3) 41. Rxd5 $15 Bxg3 42. Rf5 {[#]} ({
White should try} 42. h5 $15) 42... Re8 (42... Rxf5 $1 $17 43. Bxf5 e3) 43. Kf1
Bxh4 44. Rh5 $1 Bf6 (44... Bd8 {keeps more tension.} 45. Bf5 Re7 46. Rh6 Rf7
47. Rh5 e3) 45. Bf5 Re7 46. Ke2 Kg8 47. Ke3 h6 48. Bxe4 Bg5+ 49. Kd3 Kg7 50.
Rh1 Rd7+ 51. Kc4 Kf6 52. Rf1+ Ke5 53. Bg6 Rd4+ 54. Kc5 {And now Rf5+ would win.
} Rd8 (54... Be7+ {seems wilder.} 55. Kb5 Rg4 56. Bf7 Rb4+ 57. Kc6 Bh4) 55.
Rf5+ Ke6 56. Rf3 Be7+ 57. Kc4 Bf6 58. Kc5 Rc8+ 59. Kb5 {The position is equal.}
Rc1 60. Re3+ Be5 61. Rh3 Bf4 62. Kb4 Kf6 63. Bh5 Kg5 64. Kb3 Rc5 65. Bf3 {
aiming for Rh5+.} Kf6 (65... Kg6 {looks sharper.} 66. Rh4 Bg5 67. Rh3 Be7 68.
Rh1 Ra5) 66. Kb4 (66. Rh5 $5 {[%cal Rh5c5]} Bg5 67. Rh2 $11) 66... Rc7 67. Kb3
Bg5 68. Be2 Ke5 69. Rc3 Rd7 70. Rd3 Rf7 71. Rf3 Rg7 72. Rh3 Kd4 73. Rd3+ Ke4
74. Rh3 Rd7 75. Kc4 Rd2 76. Bh5 Rc2+ (76... Kf4 {seems wilder.} 77. Rf3+ Ke5
78. Rh3 Rd4+ 79. Kc3 Rh4) 77. Kb3 {Strongly threatening Bg6+.} Rc1 (77... Rf2 {
is interesting.} 78. Bg6+ Kd5 79. Kc3 Rg2 80. Be8 Ke5) 78. Kb2 Rc7 79. Kb3 Kf5
80. Rc3 Rb7+ 81. Kc2 Bf6 82. Rh3 Rb2+ 83. Kc1 Rg2 84. Kd1 Kg5 85. Ke1 Bd4 86.
Bf3 Rb2 87. Be2 Rb6 (87... h5 {feels hotter.} 88. Rxh5+ Kg6 89. Rh3 Rb1+ 90.
Kd2 Rb2+) 88. Rh5+ Kg6 89. Rh3 Rb1+ 90. Kd2 {Black must now prevent Bd3+.} Rb2+
(90... Ra1 {with more complications.} 91. Rg3+ Kf5 92. Rh3 Kf4 93. Kc2 Ke4) 91.
Ke1 Be5 92. Kd1 $1 Rb4 93. Ke1 Bf6 94. Bd3+ $1 Kg7 95. Rh5 Rb2 96. Kd1 Bg5 {
...Rd2+ is the strong threat.} 97. Bc2 Kf6 98. Rh3 {Weighted Error Value:
White=0.10/Black=0.13} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "8.4"]
[White "Vachier-Lagrave, Maxime"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2751"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,97,20,14,32,14,18,12,15,15,18,8,17,19,21,14,18,12,26,20,14,6,8,0,0,
-16,126,137,126,0,0,0,22,18,16,9,59,59,51,56,52,52,47,0,0,0,5,0,116,125,98,
-125,-108,-105,-116,-143,-151,-123,-110,-105,0,0,0,0,0,0,0,0,0,0,161,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 O-O 6.
O-O d6 7. Re1 h6 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.}
8. Nbd2 a6 9. a4 Ba7 10. h3 Re8 11. b4 $1 {11.b4 scores better than 11.Nf1.}
Be6 12. Bxe6 Rxe6 13. Qc2 Qd7 14. Rb1 b5 15. Ra1 Ree8 16. Nf1 {[%cal Bd2f1,
Bf1g3,Bg3f5][%mdl 32]} d5 17. Ng3 Rad8 {[#]} 18. Nf5 $146 ({Predecessor:} 18.
Bd2 dxe4 19. dxe4 Qe6 20. Rec1 Qc4 21. Be1 Bb6 22. Nd2 Qd3 23. Qxd3 Rxd3 24.
Nf3 bxa4 25. Rxa4 {1/2-1/2 (40) Giri,A (2772)-Sethuraman,S (2618) Tbilisi 2017}
) 18... Qe6 (18... dxe4 $11 19. dxe4 Qd3 20. Qxd3 Rxd3) 19. axb5 $16 axb5 20.
Be3 (20. Bxh6 $1 $16 gxh6 21. Nxh6+ Kf8 22. Ng5 {[%mdl 64] Double Attack})
20... Bxe3 $11 21. Nxe3 dxe4 22. dxe4 Ne7 23. Ra5 c6 24. c4 Rb8 25. c5 Rbd8 26.
Kh2 Nh7 27. Nf5 Nxf5 28. exf5 Qd5 29. Raa1 $1 {Threatens to win with Red1.} Ng5
{[#]} (29... e4 $1 $11 {keeps the balance.} 30. Rad1 Qxf5 31. Rxd8 Rxd8 32.
Qxe4 Qxe4 33. Rxe4 Ng5 34. Nxg5 hxg5) 30. Nxe5 $1 $16 {[%mdl 512] Strongly
threatening Rad1.} Qd4 {[#]} 31. Ng4 (31. Nxc6 Qf4+ 32. g3 (32. Kg1 $2 Rxe1+
33. Rxe1 Rd2 $19 {[%mdl 64] Double Attack}) 32... Nf3+ 33. Kg2 Nxe1+ $15) (31.
Qd3 $1 $16 {[%cal Rd3d4] Hoping for Qxd4.} Qxd3 32. Nxd3) 31... Qxb4 32. Rxe8+
Rxe8 33. f6 {next Qf5 is good for White.} Qf4+ 34. g3 Qd4 35. Rd1 Nf3+ ({
Better is} 35... Qe4 $1 $17 {[%cal Re4c2]} 36. Qxe4 Nxe4) 36. Kh1 $11 Re1+ 37.
Rxe1 Nxe1 38. Qf5 Qd3 39. Qc8+ {[%mdl 64] Double Attack} Kh7 {( -> ...Qf3+)}
40. Qxc6 {And now fxg7 would win.} Qf1+ $1 41. Kh2 h5 {The position is equal.}
42. Qe4+ g6 43. Ne5 Qxf2+ {[%mdl 64] Double Attack} 44. Kh1 b4 ({Don't play} 
44... Qxg3 $6 45. Qd5 $18) 45. Nxf7 Qf1+ 46. Kh2 Qf2+ ({Wrong is} 46... Nf3+ $2
47. Qxf3 $3 {[%mdl 512]} Qxf3 48. Ng5+ Kg8 49. Nxf3 $18) 47. Kh1 Qf1+ 48. Kh2
Qf2+ ({Avoid the trap} 48... Nf3+ $2 {[#]} 49. Qxf3 $3 {[%mdl 512]} Qxf3 50.
Ng5+ {[%mdl 64] Double Attack} Kh6 51. Nxf3 $18) 49. Kh1 {Weighted Error Value:
White=0.15/Black=0.17} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "8.5"]
[White "Dominguez Perez, Leinier"]
[Black "Carlsen, Magnus"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2758"]
[BlackElo "2847"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,107,29,42,41,41,41,39,31,29,31,42,37,57,29,35,32,22,30,150,138,146,
137,246,147,232,45,49,40,56,52,37,45,38,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 
1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bf5 6. Bd2 c6 7. Bc4 Nbd7 8.
Qe2 Qc7 9. O-O-O e6 10. Nh4 Bg6 11. Nxg6 {B01: Scandinavian Defence.} hxg6 12.
d5 cxd5 13. Nxd5 {White is slightly better.} Nxd5 14. Bxd5 O-O-O 15. Bf3 Bd6
16. g3 $36 {[%mdl 2048] [#] White has some pressure.} (16. Bc3 {keeps more
tension.} e5 17. Bd5 Nc5 18. Kb1 f5 19. h4) 16... Ne5 $146 ({Predecessor:} 
16... Kb8 17. Bc3 Nf6 18. Rxd6 Rxd6 19. Be5 Rhd8 20. Qb5 Ka8 21. c4 Qc8 22.
Bxd6 Rxd6 {1/2-1/2 (78) Kvassay,P (2045)-Szaraz,V (2037) Slovakia 2006}) 17.
Bc3 Nxf3 18. Qxf3 f5 (18... e5 $11) 19. Qe3 $16 e5 20. Qxa7 Qc6 (20... Qc5 $16
{was necessary.} 21. Qxc5+ Bxc5) 21. Qa8+ $1 $18 Kd7 {[#]} 22. Qa5 ({White
should try} 22. Rxd6+ $1 $18 {[%mdl 512]} Qxd6 23. Qxb7+ Ke8 24. Qxg7 Rxh2 25.
Re1) 22... Ke6 $1 $14 {Black wants to play ...Ra8.} 23. Rhe1 Bc7 {[%cal Rc7a5]}
24. Qb4 ({Reject} 24. Rxe5+ Kf7 $11) 24... Rxd1+ 25. Rxd1 Rxh2 26. Qf8 {
Strongly threatening Bb4.} (26. f3 $5 {[%cal Rb4f8]} Rh8 27. Re1 $11 (27. f4
Rh1 $11)) 26... Rh1 $1 {The position is equal.} 27. Be1 Qe4 28. Qxg7 Rxe1 29.
Qxg6+ Ke7 30. Qg7+ Ke6 31. Qd7+ (31. Qxc7 {with more complications.} Rxd1+ 32.
Kxd1 Qd4+ 33. Ke1 Qe4+ 34. Kf1) 31... Kf6 {And now ...Qe2 would win.} 32. Qxc7
{Hoping for Qd6+.} Rxd1+ 33. Kxd1 $11 {[%mdl 4096] Endgame KQ-KQ} Qd5+ 34. Kc1
Qh1+ 35. Kd2 Qd5+ 36. Kc3 {Black must now prevent Qb6+.} Qf3+ 37. Kb4 {
Threatens to win with Qd8+.} Qxf2 38. Qd6+ Kg5 $1 39. Qxe5 {aiming for c4.}
Qxc2 40. Qf4+ Kg6 41. Qd4 (41. b3 {is interesting.} Qxa2 42. g4 fxg4 43. Qxg4+
Kf6 44. Qc4) 41... Kg5 42. a4 (42. Qg7+ {is more complex.} Kh5 43. a3 Qc1 44.
a4 Qe1+ 45. Kc5) 42... Qe4 43. Qxe4 fxe4 {K3P-KPP} 44. Kc3 $1 {[%cal Rc3d4]}
Kg4 45. Kd2 {[%cal Rd2e3]} Kf3 {...Kf2 is the strong threat.} 46. Ke1 Kxg3 {
KPP-KPP} 47. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Kf4 48. a5 Ke5 $1 49. b5 {
a6 would kill now.} Kd5 50. a6 bxa6 51. bxa6 {White threatens a7 and mate.} Kc6
52. Ke2 Kb6 53. Ke3 Kxa6 54. Kxe4 {Weighted Error Value: White=0.08/Black=0.10}
1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "8.6"]
[White "Mamedyarov, Shakhriyar"]
[Black "Van Foreest, Jorden"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2782"]
[BlackElo "2698"]
[Annotator "TA"]
[PlyCount "75"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,75,38,31,29,29,38,30,32,15,17,21,32,0,0,0,30,35,38,24,53,42,58,52,38,
33,44,25,45,18,40,21,59,33,22,24,33,34,108,19,104,113,93,44,52,60,143,141,146,
139,144,138,210,154,154,154,416,355,404,374,377,406,392,390,908,570,29990,
29991]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 Bf5 5. cxd5 cxd5 6. Qb3 Nc6 {
now scores much better than the old 6...Bc8. D10: Slav Defence: 3 cxd5 
(without early Nf3) and 3 Nc3.} 7. Qxb7 Bd7 $1 {next ...Rb8 is good for Black.}
8. Qb3 Rb8 {White has an edge.} 9. Qd1 e5 10. dxe5 Nxe5 11. Be2 Bd6 12. Nf3 O-O
13. O-O Qe7 14. a4 $5 {[%mdl 4] Exploring less charted territory.} Rfc8 15. Nd4
Bb4 16. Bd2 Nc4 17. Bxc4 dxc4 18. Qc2 {[#]} Bd6 $146 ({Predecessor:} 18... Qe5
19. Ncb5 Bc5 20. Nf3 Qe4 21. Rfc1 a6 22. Qxe4 Nxe4 23. Nc3 Nxd2 24. Nxd2 Be6 {
1/2-1/2 (40) Bindrich,F (2606)-Petrov,N (2593) St Petersburg 2018}) 19. h3 a6
20. Rae1 Bc5 21. Bc1 Qe5 22. Rd1 h6 23. Rfe1 Qh5 (23... Rb6 $14) 24. Nde2 ({
White should try} 24. e4 $1 $16) 24... Qe5 (24... Qf5 $11 25. Qxf5 Bxf5) 25. e4
$16 g5 26. Nd5 Be6 {[%cal Rf6d5]} (26... Nxe4 $2 27. Qxe4 $3 {[%mdl 512]} Qxe4
28. Nf6+ Kg7 29. Nxe4 $18) 27. Nec3 Nh5 (27... Nxd5 $14 28. Nxd5 (28. exd5 Bf5
$11) 28... Bxh3 29. gxh3 Qg3+ {[%mdl 64] Double Attack} 30. Kh1 Qxh3+ 31. Kg1
Qg4+ 32. Kf1 Qh3+ 33. Kg1 Qg4+ 34. Kf1 Qh3+ 35. Kg1) 28. Qe2 Nf6 29. Kh1 {
aiming for f4.} Nxd5 30. Nxd5 Rb3 (30... Rb7 $16 {keeps fighting.} 31. Qh5 (31.
f4 gxf4 32. Rf1 Bf8 $16) 31... Qg7) 31. f4 gxf4 32. Bxf4 ({Don't play} 32. Qxc4
$6 Rg3 $16) 32... Qxb2 {[#] A mistake that costs the game.} (32... Qg7 $16) 33.
Qh5 $1 $18 {And now Be5 would win.} Qg7 34. Bxh6 Qg6 {[#]} 35. Qh4 {Strongly
threatening Nf6+.} Bxd5 ({Weaker is} 35... Rb2 36. Nf6+ Qxf6 37. Qxf6 Rxg2 38.
Kxg2 Bf8 39. Rd8 Rxd8 40. Qxd8) 36. Rxd5 Rg3 (36... Bf2 37. Qxf2 Qxh6) 37. Red1
{Intending Rd8+ and mate.} Bf8 38. Rd8 {Weighted Error Value: White=0.20/
Black=0.41} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "8.7"]
[White "Artemiev, Vladislav"]
[Black "Aronian, Levon"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2704"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,71,1,10,54,66,105,40,217,220,581,464,446,455,445,443,538,437,653,554,
1072,1062,1109,1102,1070,1042,917,372,370,356,390,378,419,433,543,540,848,851,
841,832,1085,1081,1034,1032,1360,1337]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4
5. e3 c5 6. cxd5 Nxd5 7. Bd2 O-O 8. Bd3 Nc6 9. O-O Nf6 10. a3 cxd4 11. exd4 Be7
12. Be3 b6 13. Qe2 Bb7 14. Rad1 Rc8 15. Rfe1 Qc7 {B22: Sicilian: 2 c3.} 16. Bg5
Rfd8 17. Bb1 (17. Bxf6 $16 Bxf6 18. d5) 17... Na5 $2 {[#]} ({Black should play
} 17... Nd5 $1 $14) 18. Ne5 $1 $18 Qd6 $2 (18... Rf8 19. Nb5 Qd8) 19. Bxf6 Bxf6
{[#]} 20. Bxh7+ {[%mdl 512]} Kf8 21. Qh5 {[%csl Ge5][%cal Rh5f7] [#]} Rc7 $146
({Predecessor:} 21... Bxe5 22. dxe5 Qc5 23. Ne4 Rxd1 24. Rxd1 Qc6 25. Qg5 g6
26. Bxg6 fxg6 27. Qf6+ Kg8 28. Qxg6+ Kf8 29. Qh6+ Ke8 30. Nf6+ Kf7 31. Qh7+ {
1-0 (31) Gasparics,A (2049)-Ritter,G (2069) Hungary 2015}) 22. Be4 Ba6 (22...
Bxe4 $142 23. Nxe4 Qd5) 23. Bb1 g6 24. Bxg6 fxg6 25. Nxg6+ Kg7 26. Ne4 Qd5 27.
Nf4 (27. Ne5 $142 Bxe5 28. dxe5 Qxd1 29. Rxd1 Rxd1+ 30. Qxd1) 27... Qxh5 28.
Nxh5+ Kf7 29. Nhxf6 ({Don't take} 29. Nexf6 Rc2 $18) 29... Rc2 30. d5 exd5 {
White is clearly winning.} 31. Nxd5 Nc6 32. Ng5+ Kg6 33. Ne6 Rh8 34. Ndf4+ Kf6
35. Rd6 {White wants to mate with Nd4+!} Re8 36. Nd4+ {White took control
after the opening.  Weighted Error Value: White=0.54/Black=0.96} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "8.8"]
[White "Giri, Anish"]
[Black "Liang, Awonder"]
[Result "1/2-1/2"]
[ECO "D19"]
[WhiteElo "2776"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "133"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,133,32,33,20,23,24,30,30,26,31,56,41,47,32,50,25,43,28,71,40,45,31,
34,26,42,27,20,17,90,0,0,0,0,-70,-71,-64,0,0,0,-376,-46,-67,0,0,0,0,0,0,26,30,
52,0,39,0,0,-20,107,102,470,430,387,0,0,0,16,7,256,259,251,252,235,239,243,243,
248,235,354,119,128,-641,0,0,0,-697,-122,-117,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 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 Qc7 13.
g3 {D19: Slav Defence: 5 a4 Bf5 6 e3: Main line with 9 Qe2.} Rad8 14. Qc2 a5
15. Na2 {White has an edge.} Be7 16. Bd2 {[#]} e5 $146 ({Predecessor:} 16...
Qb6 17. Rac1 Nd5 18. e4 N5f6 {1-0 (55) Kasparov,G (2750)-Timman,J (2675)
Amsterdam 1988}) 17. Rac1 Kh8 18. Be1 exd4 19. exd4 Qb6 20. Rd3 c5 21. Re3 Bd6
22. d5 Ne5 23. b3 Bc7 24. Rd1 Nfg4 25. Rc3 {Black must now prevent Be2.} f5 (
25... Nh6 $11) 26. Bf1 (26. f3 $16 Nf6 27. Re3) 26... f4 $11 27. Bg2 Bd6 28.
Nc1 (28. gxf4 $11 Rxf4 29. Rh3+ Kg8 30. Nc3) 28... c4 $15 29. bxc4 Bc5 (29...
fxg3 $1 $15 30. Rxg3 Nxf2 $1 31. Bxf2 Rxf2 $1) 30. Rd2 Rde8 31. Be4 $2 {
[%mdl 8192]} (31. gxf4 $11 {and White is okay.} Nf3+ 32. Bxf3 Rxe1+ 33. Kg2
Bxf2 34. Bxg4 (34. Rxf2 Rxc1 35. Bxg4 Rxc2 $11) 34... Rg1+ 35. Kh3 Rxf4 36. Ne2
) 31... g5 $2 (31... fxg3 $19 32. hxg3 Nxf2 $1 33. Bxf2 Rxf2 34. Rxf2 Rf8 {
[%mdl 64] Pin}) 32. d6 (32. h3 $2 Qh6 $19) 32... Bxd6 (32... Bb4 $1 $15 33. c5
Qd8) 33. gxf4 $1 $11 (33. c5 $2 Bxc5 34. gxf4 (34. Rxc5 $2 Qh6 $19) 34... Qh6
$1 $19) 33... Rxf4 {aiming for ...Nf6.} 34. Rh3+ Nh6 35. Re2 $1 Ref8 36. Nd3
$36 {[%mdl 2048] White fights for an advantage.} Nxd3 37. Qxd3 (37. Rxd3 $14
Bb4 38. Bxb4 axb4 39. Bd5) 37... Bc5 {[%cal Rc5f2]} (37... Bb4 $5 {[%cal Rb4e1]
} 38. Bc3 Bxc3 39. Qxc3 Rxe4 $1 40. Rxh6+ Qxh6 41. Rxe4 Qf6 $11) 38. Qg3 Re8
39. Qg2 Qe6 (39... Re5 $11 {keeps the balance.} 40. Bd3 Rxe2 41. Bxe2 Qb1) 40.
Bd3 $1 $16 Qd7 {[%mdl 8192]} (40... Qxe2 $16 41. Bxe2 Rxe2) 41. Rxe8+ Qxe8 {[#]
} 42. Kf1 (42. Rxh6+ $1 $18 {[%mdl 512]} gxh6 43. Bc3+ Bd4 44. Qxb7) 42... Qd7
43. Be2 Qf5 {Hoping for ...Qb1.} 44. Rd3 Rd4 (44... Qf6 $11) 45. Rxd4 $18 Bxd4
46. Qxb7 Ng4 47. Qb8+ Kh7 {[%cal Rg4f2]} 48. Qg3 {Threatens to win with Bd3.}
Ne5 49. Bxa5 g4 (49... Bc5 {keeps fighting.} 50. Bd2 Kg6) 50. Be1 $2 (50. h3 $1
$18 {and the rest is easy.}) 50... Nf3 {...Be5 is the strong threat.} 51. c5 $2
{[%mdl 8192]} (51. h3 $16 Nxe1 52. Kxe1) 51... Bxc5 $2 (51... Be5 $1 $19 {
[%cal Re5g3]} 52. Bxf3 (52. Qg2 $2 Nxh2+ 53. Kg1 Qb1 $19) 52... Bxg3 {[%mdl 64]
Discovered Attack} 53. Bxg4 Qxg4 54. hxg3 Qxa4) 52. Bxf3 gxf3 53. Kg1 $2 {
[%mdl 8192] [#]} (53. Qh4+ $11 Kg8 54. Qc4+ Kh8 55. Qh4+ Kg8 56. Qc4+ Kh8 57.
Qh4+ Kg8) 53... Qe4 $2 (53... Bb4 $1 $19 {[%mdl 512] has better winning
chances.} 54. Kf1 (54. Qh4+ $2 Kg6 $19) 54... Qd3+ 55. Kg1 Bxe1 56. Qh3+ Kg6
57. Qg3+ (57. Qe6+ $2 Kh5 $19) 57... Kh7 58. Qh3+ Kg6 59. Qe6+ Kh5 60. Qh3+ (
60. Qe5+ $2 Kh6 $19) 60... Kg5 61. Qg3+ Kf5 62. Qh3+ Ke5 63. Qg3+ Kd5) 54. Qh3+
$17 Kg6 (54... Kg8 $17 55. Qf1 (55. Qc8+ $2 Kf7 $19) 55... Qxa4) 55. Qf1 $11 {
The position is equal.} Bd6 56. Kh1 Bxh2 57. Kxh2 Qf4+ 58. Kh3 Kh5 $1 {[%csl
Gh5][%cal Rf4h4]} 59. Qb5+ g5 {[%csl Gg5,Gh5][%cal Rf4h4]} 60. Qe8+ Kh6 {
[%csl Gg5][%cal Rf4h4]} 61. Qh8+ (61. Qc6+ {keeps more tension.} Kh5 62. Qe8+)
61... Kg6 {Strongly threatening ...g4+.} 62. Qg8+ Kh6 {[%csl Gg5][%cal Rf4h4]}
63. Qe6+ Kh5 $1 {[%csl Gg5,Gh5][%cal Rf4h4]} 64. Qe8+ Kh6 {[%csl Gg5][%cal
Rf4h4]} 65. Qh8+ Kg6 {And now ...g4+ would win.} 66. Qg8+ Kh6 {[%csl Gg5][%cal
Rf4h4]} 67. Qh8+ {What a fight!  Weighted Error Value: White=0.62/Black=0.89}
1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "9.1"]
[White "Liang, Awonder"]
[Black "Duda, Jan-Krzysztof"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "2587"]
[BlackElo "2738"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,94,0,0,0,0,-62,14,0,0,0,22,8,27,37,24,21,26,-21,-27,-65,-65,-55,-70,
-64,-68,-107,-79,-84,-91,-121,-113,-244,-212,-235,-206,-321,-169,-173,-158,
-219,-204,-293,-254,-268,-274,-245,-236,-256,-242,-296,-291,-339,-260,-363,
-357,-336,-346,-352,-400,-374,-389,-402,-337,-443,-437,-741,-722,-680,-494,
-481,-490,-481,-390,-643,-644,-633,-626,-616,-607,-868,-477,-454,-387,-494,
-490,-29973,-12159]} 1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. Be2 Nf6 5. e5 Nfd7 6. d4
{B11: Caro-Kann: Two Knights Variation.} e6 7. h3 (7. Ng5 $11 Bf5 8. Bg4) 7...
Bf5 ({Black should try} 7... Bxf3 $15 8. Bxf3 c5) 8. g4 {The position is equal.
} Bg6 9. h4 h5 10. gxh5 Bxh5 11. Ng5 Bxe2 12. Qxe2 Bb4 13. Qf3 {[%csl Gg5]
[%cal Rf3f7]} (13. Qg4 {is more complex.} Qe7 14. Nf3 Rh7 15. Bd2 Bxc3 16. Bxc3
c5 17. dxc5 Nc6 18. O-O-O) 13... Qe7 {[#]} 14. Bd2 $146 ({Predecessor:} 14. a3
Bxc3+ 15. Qxc3 c5 16. b4 b6 17. bxc5 bxc5 18. Qb3 cxd4 19. Qb7 Nb6 20. Qxe7+
Kxe7 {0-1 (42) Shianovsky,V-Lazarev,E Kiev 1963}) 14... f6 15. exf6 gxf6 16.
Nh3 Rxh4 17. Qg3 Qh7 {Strongly threatening ...c5.} 18. O-O-O Na6 ({Wrong is} 
18... Rxd4 $2 19. Nf4 $18) 19. Rde1 O-O-O {And now ...Rg8 would win.} ({
Don't go for} 19... Rxd4 $2 20. Nf4 $18) 20. Rxe6 {This move loses the game
for White.} (20. f4 $17) 20... Nc7 21. Re3 Rg8 22. Qf3 (22. Qh2 {was necessary.
}) 22... Rh8 ({Weaker is} 22... Rxd4 23. Nf4 $17) (22... c5 $142 23. Re2 Rh8
24. Nxd5 Bxd2+ 25. Rxd2 Rxh3 26. Ne7+ Kd8 27. Rxh3 Qxh3 28. Qxh3 Rxh3) 23. Ne2
$19 Bd6 24. a3 {[#]} (24. Qg2 $17 {was worth a try.}) 24... f5 $1 25. Bb4 {[#]}
(25. Rc3 $142) 25... f4 $1 {[%cal Rf4e3]} 26. Rc3 (26. Rb3 Bxb4) 26... Bxb4 27.
axb4 Nb5 28. Rd3 Qe4 29. Kd2 Nd6 30. b3 Kc7 31. Rh2 Nf8 32. Neg1 Ne6 33. Rg2
Qf5 34. Kc1 Nb5 35. c3 Kb6 36. Kd2 Ra8 {...a5 is the strong threat.} 37. Qe2 (
37. Ke1 $142) 37... a5 38. Qe5 Qxe5 39. dxe5 axb4 40. cxb4 Rh5 41. Rg6 $2 (41.
Kc1) 41... Rxe5 42. Nf3 Ra2+ 43. Kd1 Ree2 {Threatens to win with ...Ned4!} 44.
Nhg1 Rxf2 {[%cal Ra2a1]} 45. Ke1 Nec7 46. Nd2 Rh2 47. Ne2 (47. Ndf3 $19 Rhb2
48. Rd2) 47... Ra1+ {Weighted Error Value: White=0.63/Black=0.30} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "9.2"]
[White "Aronian, Levon"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[WhiteElo "2782"]
[BlackElo "2776"]
[Annotator "TA"]
[PlyCount "18"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,18,0,23]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 {[#]}
6. Be3 $146 ({Predecessor:} 6. h3 Nc6 7. g4 g6 8. Be3 Nxd4 9. Qxd4 Bg7 10.
O-O-O Be6 11. f4 Qa5 12. f5 Bxa2 13. Bd2 O-O 14. Nd5 Nxd5 15. Bxa5 Bxd4 16.
Rxd4 {1-0 (40) Karjakin,S (2757)-Shankland,S (2709) Krasnaya Polyana 2021})
6... Ng4 7. Bc1 Nf6 8. Be3 Ng4 9. Bc1 $1 {[%mdl 4] 9.Bc1 is the recent fashion.
} Nf6 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "9.3"]
[White "Van Foreest, Jorden"]
[Black "Artemiev, Vladislav"]
[Result "0-1"]
[ECO "C91"]
[WhiteElo "2698"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 28,54,-5,-10,-8,0,4,-11,-25,-150,-142,-120,-143,-147,-114,-376,-371,
-366,-360,-414,-421,-427,-401,-452,-437,-430,-415,-421,-407]} 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 exd4 11. cxd4 Na5 12. Nbd2 c5 13. Bc2 cxd4 14. Bxd4 Nc6 15. Be3 Rc8 {
C91: Closed Ruy Lopez: 7...d6 8 c3 0-0 9 d4.} 16. h3 Bh5 17. g4 Bg6 {[#] The
position is equal.} 18. Nd4 $146 {[#]} (18. Rc1 $11) ({Predecessor:} 18. Nh4 d5
19. Nf5 Bb4 20. Bg5 h6 21. Bf4 dxe4 22. Bxe4 Nxe4 23. Rxe4 Bxf5 24. gxf5 {
0-1 (68) Allahverdiyeva,A (2046)-Kovalev,V (2667) Moscow 2018}) 18... Nxd4 $1
$17 19. Bxd4 d5 20. Bb1 dxe4 {[%mdl 64] Overworked Piece} 21. Nxe4 $2 {[%mdl
8192]} (21. Bc3 $17) 21... Nxe4 $19 22. Bxe4 Rc4 23. Bxg6 Rxd4 24. Qe2 Bb4 ({
Not} 24... fxg6 25. Qxe7 Qd5 26. Rac1 $15) 25. Bc2 Bxe1 26. Rxe1 Rd2 27. Qe4 {
[%csl Gc2][%cal Re4h7] [#]} Qh4 {White got outplayed after the opening. 
Weighted Error Value: White=0.68/Black=0.04} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "9.4"]
[White "Carlsen, Magnus"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2847"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "142"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,142,14,20,24,30,29,35,20,25,14,46,37,34,32,73,29,38,37,35,32,34,20,51,
41,39,33,33,33,33,31,31,20,35,40,49,48,76,90,78,50,81,85,87,41,135,135,169,143,
147,76,83,66,67,78,57,55,58,47,47,64,101,106,110,110,110,110,118,118,118,118,
118,120,120,120,120,120,120,120,120,83,120,104,127,127,127,127,127,127,127,127,
127,127,127,120,120,112,112,112,112,112,112,112,112,112,112,112,112,112,112,
112,112,20,20,0,0,-8,0,-8,-8,-8,-8,-8,0,0,14,14,14,14,14,14,14,14,14,-8,-8]} 1.
d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. e3 e6 5. c4 Bb4+ 6. Nbd2 {D02: 1 d4 d5 2 Nf3
sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} c5 7. cxd5 {[#]} Qxd5
$146 ({Predecessor:} 7... Nxd5 8. Bxb8 Rxb8 9. Bb5+ Ke7 10. a3 Qa5 11. Be2
Bxd2+ 12. Nxd2 cxd4 13. e4 Ne3 14. fxe3 dxe3 15. exf5 {0-1 (51) Erigaisi,A 
(2559)-Xiong,J (2709) chess.com INT 2020}) 8. a3 {White is slightly better.}
Bxd2+ 9. Qxd2 {next dxc5 is good for White.} Nc6 10. dxc5 Qxc5 11. b4 Qb6 12.
Be2 O-O 13. O-O Rfd8 14. Qb2 Bd3 15. Rac1 Rd5 16. Bxd3 Rxd3 17. Ne5 Nxe5 18.
Bxe5 Ne8 19. a4 Rd5 20. h3 $36 {[%mdl 2048] White has good play.} Qa6 21. e4
Rdd8 22. Qb3 b5 23. a5 Qb7 24. Rc5 Rac8 25. Rxc8 Rxc8 26. Qe3 Rc4 (26... Qd7
$14) 27. Rd1 $16 f6 28. Bd4 ({Worse is} 28. Rd8 Qe7 $17) 28... Qd7 {[#]} ({
Don't go for} 28... Rxb4 $2 29. Bxa7 Qc6 30. Qb6) 29. Qd2 (29. Rd3 $142 $1)
29... Nc7 30. Bxa7 Qxd2 31. Rxd2 {[%mdl 4096] Endgame KRB-KRN} Na6 32. Be3 {
And now Rd8+ would win.} Nxb4 33. Rd7 Rxe4 34. Rb7 h6 35. Rxb5 Nd5 36. a6 Ra4
37. a7 Nxe3 {KRN-KR} 38. Rb8+ Kf7 39. a8=Q Rxa8 40. Rxa8 {KR-KN} Nd5 41. Ra7+
Kg6 42. g3 h5 43. Kg2 f5 44. h4 Kf6 45. Kf3 e5 46. Ra6+ Kf7 47. Ke2 g6 48. Ra5
Ke6 49. Kd3 Nf6 50. Ra6+ Kf7 51. Ra7+ Kf8 52. f3 e4+ 53. Ke3 exf3 54. Kxf3 Nd5
55. Ke2 Ne7 56. Ke3 {Strongly threatening Kf4.} Nd5+ 57. Kd4 Nf6 58. Ke5 Ne4
59. Rd7 Kg8 60. g4 (60. Rc7 $16) 60... hxg4 $11 {The position is equal.} 61. h5
g3 {Hoping for ...g2.} 62. h6 Kh8 63. Rg7 g5 {Threatens to win with ...g2.} 64.
Ra7 ({Avoid the trap} 64. Kxf5 $2 {[#]} g2 $1 $19) 64... g2 65. Ra1 Kh7 66. Rg1
Kxh6 (66... Nd2 $5 {[%cal Rd2f3]} 67. Kxf5 Nf3 68. Rxg2 Nh4+ 69. Kxg5 Nxg2 $11)
67. Kxf5 Ng3+ 68. Kg4 Nh5 69. Rxg2 {aiming for Rh2!} Kg6 70. Kf3 Nf6 71. Rxg5+
Kxg5 {Weighted Error Value: White=0.09/Black=0.08} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "9.5"]
[White "So, Wesley"]
[Black "Dominguez Perez, Leinier"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2772"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,107,8,6,4,6,8,8,8,8,0,5,7,7,7,5,6,0,13,15,18,25,22,0,98,93,93,95,88,
93,87,88,86,90,108,101,177,202,229,219,203,212,189,207,189,238,226,238,219,158,
175,150,257,264,262,255,247,247,293,278,302,270,270,270,260,274,252,212,289,
283,297,297,514,510,515,322,426,322,439,314,406,391,568,566,704,717,808,794,
1329,1272,1318,1305,1287,1281,1189,1158,1319,1280]} 1. c4 c5 2. g3 g6 3. Bg2
Bg7 4. Nc3 Nc6 5. Nf3 d6 6. O-O Bg4 7. h3 Bxf3 {A37: Symmetrical English vs ...
g6: 4 Bg2 Bg7 5 Nf3.} 8. Bxf3 e6 {now scores much better than the old 8...Qd7.}
9. d3 Nge7 {The position is equal.} 10. Bd2 O-O 11. a3 d5 12. cxd5 exd5 13. Rb1
Qd7 14. Bg2 Rad8 15. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} c4 {[#]} 16. b5 $5 $146 {
[%mdl 8] New and interesting.} ({Predecessor:} 16. Na4 cxd3 17. Nc5 dxe2 18.
Qxe2 Qc8 19. Bg5 Rfe8 20. Qd2 b6 21. Nb3 Qd7 22. Rbd1 {0-1 (37) Kocur,V (2133)
-Nabelek,M (2210) Czech Republic 2011}) 16... Nd4 17. Bg5 h6 (17... Ndf5 $11
18. Bxe7 Nxe7) 18. Bxe7 $16 {Black is now going downhill.} Qxe7 {[#]} 19. e3 $1
{[%cal Re3d4]} Nf3+ {[%mdl 64] Discovered Attack} 20. Bxf3 Bxc3 21. dxc4 dxc4
22. Qa4 Qc5 23. Rbc1 Rd3 (23... Be5 $16) 24. Be4 $18 (24. Bxb7 $6 Rfd8 $16)
24... Rxe3 25. fxe3 Qxe3+ 26. Kh2 Be5 27. Bf3 Qg5 28. Rg1 Bxg3+ 29. Kh1 Qh4 {
[%cal Rh4h3] [#]} 30. Bg2 Be5 {( -> ...Qg3)} 31. Qc2 {Strongly threatening Qe2.
} ({Don't blunder} 31. Rxc4 $2 Qg3 $19) 31... c3 (31... Rd8 $16) 32. Qe2 Qg3 {
[%csl Ge5][%cal Rg3h2]} 33. Bf1 Qf4 34. Re1 Bd6 35. Rg4 Qf6 36. Bg2 Rc8 {
intending ...c2.} 37. Rf1 Qe5 38. Qxe5 Bxe5 39. Be4 Rc5 40. a4 ({Not} 40. Bxb7
c2 $11) 40... Kg7 41. Bc2 ({Weaker is} 41. Bxb7 c2 $16) 41... h5 $2 (41... Rc7
42. Rd1 h5) 42. Rg5 b6 43. Rd1 Kh6 44. Rg2 Rc4 45. Rf2 f5 46. Re2 Rc5 (46...
Bd4 $142 47. Re6 Kg7) 47. Rd7 {White is clearly winning.} h4 48. Rxa7 Kg5 49.
Rb7 Kf4 50. Rxb6 Kf3 51. Bd1 {White threatens Rxe5+ and mate.} Kf4 52. Rxg6 Rd5
53. Bb3 Rd3 54. Kg2 {Weighted Error Value: White=0.15/Black=0.40} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "9.6"]
[White "Vidit, Santosh Gujrathi"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2726"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,81,32,29,35,32,34,35,31,23,31,27,29,29,31,14,15,16,27,33,33,37,35,37,
35,33,37,21,36,36,45,39,46,11,12,12,12,12,12,12,12,12,12,12,12,4,4,3,3,3,3,3,3,
3,3,3,3,3,3,3,3,0,0,0,3,0]} 1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. g3 d5 5. d4 cxd4
6. Nxd4 dxc4 7. Nxc6 Qxd1+ 8. Nxd1 bxc6 9. Bg2 Nd5 10. Ne3 Ba6 {A34:
Symmetrical English: 2 Nc3, lines with ...d5.} 11. Nxd5 cxd5 12. Bxd5 Rc8 {
White is slightly better.} 13. Bd2 e6 14. Bf3 Bc5 15. Bc3 f6 16. O-O Ke7 {[#]}
17. Rfc1 $146 ({Predecessor:} 17. Rfd1 Bb5 18. Kf1 Rhd8 19. Ke1 Ba4 20. Rd2
Rxd2 21. Bxd2 Bd4 {1/2-1/2 (21) Erigaisi,A (2559)-Martinez Alcantara,J (2620)
Lichess.org INT 2020}) 17... Rc7 18. b4 Bd6 19. a4 Bb7 20. Bxb7 Rxb7 21. b5 Rc8
22. Rc2 a6 23. bxa6 Ra7 24. a5 Rxa6 25. Bd4 Be5 {The position is equal.} 26.
Bxe5 fxe5 $11 {[%mdl 4096] Endgame KRR-KRR} 27. Ra4 c3 28. Ra3 Rc5 29. Raxc3
Rxc3 30. Rxc3 Rxa5 {KR-KR} 31. Rc7+ Kf6 32. g4 Ra4 33. h3 h5 34. gxh5 Rh4 35.
Kg2 Rxh5 36. e4 Rg5+ 37. Kf3 Rh5 38. Kg3 Rg5+ 39. Kf3 Rh5 40. Kg3 Rg5+ 41. Kf3
{Weighted Error Value: White=0.03/Black=0.02} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "9.7"]
[White "Le, Quang Liem"]
[Black "Hansen, Eric"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2709"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,55,40,25,10,27,11,15,10,18,9,43,38,33,34,48,44,42,49,53,64,66,41,52,
18,16,0,45,47,57,63,250,78,404,396,382,383,829,671,984,825,847,834,2352,2360,
1622,1383]} 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Be2
{7.e4 is the recent fashion. D27: Queen's Gambit Accepted: Classical main line:
7 e4!? and 7 a4.} cxd4 8. exd4 Be7 9. Ne5 {[#] The position is equal.} O-O $146
({Predecessor:} 9... Nbd7 10. Bf4 Nd5 11. Bg3 O-O 12. Nc3 N7f6 13. Bf3 Qa5 14.
Qb3 Qb4 15. Nxd5 Nxd5 16. Bxd5 exd5 17. Qxb4 Bxb4 {1-0 (47) Karrer,D (2194)
-Laske,E (2090) Austria 2010}) 10. Bf3 Nfd7 11. Nc3 Nxe5 12. dxe5 Nc6 13. Bxc6
bxc6 14. Qg4 Qc7 15. Re1 {aiming for Bh6!} Kh8 16. Bg5 f6 17. Bf4 $40 {[%mdl
128] Hoping for exf6. White attacks.} f5 18. Qh5 Bd7 19. Bg5 Bb4 20. Qh4 c5 {
[#]} (20... Rfb8 $14) 21. Rad1 $2 (21. Re3 $1 $18 {[%cal Re3h3] and the rest
is easy. Rh3 is the strong threat.} Be8 22. Ne2 (22. Rh3 Bg6 $16)) 21... Qb7 $2
{[%mdl 8192] [#]} (21... Kg8 $16 {is tougher.}) 22. Re3 $1 $18 {[%cal Re3h3]
Strongly threatening Rh3.} Be8 23. Ne2 (23. Rh3 Bg6 $18) 23... Bg6 $2 (23... c4
24. Rh3 (24. Qxc4 Bh5 $16) 24... h5) 24. Nf4 {White is clearly winning.} Qf7
25. Red3 Ra7 26. Rd8 c4 27. Nxg6+ {[%mdl 64] Discovered Attack} Qxg6 {[#]} 28.
Be7 $1 {[%cal Rd8f8][%mdl 512] Weighted Error Value: White=0.14/Black=0.62} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "9.8"]
[White "Firouzja, Alireza"]
[Black "Naroditsky, Daniel"]
[Result "1/2-1/2"]
[ECO "C92"]
[WhiteElo "2759"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 32,85,70,67,64,54,85,82,106,91,102,42,62,66,59,66,80,67,83,64,90,77,117,
140,130,127,132,116,111,39,84,85,83,83,95,68,91,100,80,77,67,13,24,0,0,0,0,0,0,
0,0,0,0,14,6,0]} 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 Be6 10. d4 Bxb3 11. axb3 exd4 12. cxd4 d5 13. e5 Ne4
14. Nc3 f5 15. exf6 Bxf6 16. Nxe4 dxe4 17. Rxe4 Qd5 {C92: Closed Ruy Lopez: 9..
.Be6, Karpov and Flohr-Zaitsev Variations.} 18. Rf4 {[#]} a5 $146 ({
Predecessor:} 18... Rfd8 19. Be3 Rd6 20. Qc2 Nb4 21. Qc3 a5 22. Ne5 Nc6 23.
Nxc6 Qxc6 24. Rxa5 Rxa5 25. Qxa5 Bxd4 26. Rxd4 Rxd4 27. Bxd4 {1-0 (57) Caruana,
F (2444)-Roktim,B (2365) Andorra 2006}) 19. Be3 Nb4 {White is better.} 20. Rc1
c6 21. Nh2 (21. Rg4 $16) 21... Be7 22. Rxf8+ Rxf8 23. Nf3 Bd6 24. Bd2 Re8 25.
Rc3 c5 26. Be3 Nc6 {[#]} 27. Rd3 $1 Nb4 28. Rd2 {Strongly threatening dxc5.} c4
29. bxc4 bxc4 30. Re2 ({White should try} 30. Ne5 $16) 30... Nd3 31. b3 Nb4 32.
bxc4 Qxc4 {[#]} 33. Qa4 $1 Rc8 {[#]} (33... Rb8 34. Rb2) 34. Qd7 $1 Rf8 35. Re1
Qd5 {...Bh2+! is the strong threat.} 36. Ne5 (36. Qa4 $14) 36... Nd3 $11 37.
Bh6 gxh6 {The position is equal.} 38. Qg4+ Kh8 39. Nxd3 Rg8 40. Qe4 Qxe4 41.
Rxe4 a4 42. Re6 Rd8 43. Ne5 {Weighted Error Value: White=0.13/Black=0.10} ({
Wrong is} 43. Rxh6 $2 a3 $19) 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "10.1"]
[White "Duda, Jan-Krzysztof"]
[Black "Naroditsky, Daniel"]
[Result "1-0"]
[ECO "A65"]
[WhiteElo "2738"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,135,18,40,20,31,0,19,14,9,-21,28,9,12,18,31,0,0,0,21,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,16,
1792,1056,2219,1944,2190,1322,12823,12825,12827,12827,12824,12820,12827,12829,
12833,12833,12834,12832,12832,12832,12833,12833,12836,12837,12837,12837,12838,
12838,12839,12839,12840,12840,12841,12841,12842,12840,12843,12843,12844,12844,
12845,12845,12847,12847,12848,12847,12848,12847,12847,12846,12847,12847,12847,
12847]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 c5 7. d5 e6 8.
Qd2 exd5 9. cxd5 a6 10. a4 Re8 11. Be2 {A65: Modern Benoni: 6 e4.} h5 12. h4
Nh7 13. g3 {[#] The position is equal.} f5 $146 ({Predecessor:} 13... Nd7 14.
Nh3 Ne5 15. Nf2 Bd7 16. Bh6 Bh8 17. Ncd1 b5 18. Ne3 Qf6 19. f4 {0-1 (38) Aczel,
G (2549)-Mihok,O (2541) Budapest 2018}) 14. Nh3 fxe4 (14... Bxc3 $5 15. Qxc3
fxe4 $15) 15. Nxe4 Bf5 16. Nf4 Nf8 17. Ne6 Nxe6 18. dxe6 Bxe6 19. Nxd6 Re7 20.
Bxc5 Nc6 21. Kf2 Rd7 22. Rad1 Nd4 23. Nxb7 Rxb7 24. Bxd4 {Strongly threatening
Qe3.} Rd7 {[%cal Rd7d4]} 25. Qe3 {[%cal Re3e6]} Bxd4 26. Rxd4 Rxd4 27. Qxe6+ {
[%mdl 64] [#] Double Attack} Kg7 $1 28. Rc1 Qd6 29. Qxd6 Rxd6 $11 {[%mdl 4096]
Endgame KRR-KRB} 30. Rc7+ Kf6 31. Bc4 Rd2+ 32. Ke3 Rxb2 33. Rc6+ Kg7 34. Bd5 {
Rc7+ is the strong threat.} Rf8 35. Rxa6 Rb4 36. Kd3 Rb1 37. Be4 (37. Ra7+ {
is more complex.} Kf6 38. Be4 Rd8+ 39. Kc2 Rb6 40. Kc3) 37... Rf6 38. Rxf6 (38.
Ra7+ {is interesting.} Rf7 39. Ra5 Rd7+ 40. Ke3 Rbd1 41. Kf4) 38... Kxf6 {KR-KB
} 39. Kc4 Rc1+ 40. Kb4 Rg1 41. a5 {[%cal Ba4a5,Ba5a6][%mdl 32] Threatens to
win with a6.} Rg2 $2 {[%mdl 8192] This move loses the game for Black.} (41...
Ra1 $11) 42. a6 $18 {White is clearly winning.} Ra2 43. Kb5 Ke5 44. Bxg6 Kd6
45. Bxh5 Rb2+ 46. Kc4 Ra2 47. Kd4 Rxa6 48. Bg6 Ra4+ 49. Ke3 Ke5 50. f4+ Kf6 51.
Bd3 Ra1 52. g4 Rh1 53. h5 Rh3+ 54. Ke4 Rg3 {[#]} 55. Be2 $1 Rg1 56. Kf3 Rh1 57.
g5+ Ke6 58. Bc4+ Ke7 59. Kg4 Kf8 60. h6 Rc1 61. Be6 Re1 62. Kf5 Rh1 63. Kf6 Rh4
64. f5 Rh3 65. Kg6 Rh4 66. Kh7 Ke7 67. g6 Kf6 68. g7 {Weighted Error Value:
White=0.04/Black=0.06} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "10.2"]
[White "Hansen, Eric"]
[Black "Firouzja, Alireza"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2606"]
[BlackElo "2759"]
[Annotator "TA"]
[PlyCount "94"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,94,12,16,21,16,27,39,29,32,7,7,0,3,0,0,0,-9,0,19,7,17,0,62,47,66,41,
50,31,41,0,1,0,0,0,0,0,0,-2,0,-29,-34,-31,-14,-30,-26,-26,-29,-78,-16,-135,-91,
-91,-91,-91,-91,-91,-91,-91,-91,-91,-83,-133,-145,-162,-162,-149,-21,-124,-106,
-162,-161,-159,-170,-223,-208,-246,-222,-342,-325,-658,-645,-655,-635,-649,
-631]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. h3 a6 7. a4 {
C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} Ba7 8. O-O Qe7 $5
{[%mdl 4] An interesting side line.} 9. b4 {White is slightly better.} h6 10.
Be3 (10. Re1 {is more complex.} O-O 11. Na3 Be6 12. Rb1 Rad8 13. Qc2) 10...
Bxe3 11. fxe3 Be6 12. Nbd2 O-O 13. Qb3 {[#]} Bxc4 $146 ({Predecessor:} 13...
Rad8 14. Bd5 Qd7 15. Kh2 Ne7 16. Bxe6 fxe6 17. d4 Ng6 18. b5 Kh7 19. bxa6 bxa6
{1/2-1/2 (54) Saravanabaavan,B (1611)-Laksiri,A (1331) Nugegoda 2021}) 14. Qxc4
g6 15. Rf2 Kg7 16. Raf1 Nh7 (16... Qe6 $11) 17. d4 $14 Rae8 18. b5 axb5 19.
axb5 Na5 20. Qb4 (20. Qa2 $5 {[%cal Ra2a5]} b6 21. Ne1 $14) 20... b6 21. c4 Ng5
22. Nxg5 hxg5 23. Qc3 f6 24. Ra1 Qe6 25. c5 dxc5 26. dxc5 Rd8 27. Raf1 Nb7 {
[%cal Ba5b7,Bb7d6,Bd6b5,Bb5c3][%mdl 32]} 28. cxb6 cxb6 29. Qc4 Qd7 (29... Qe7
$17) 30. Qb4 (30. Qc6 $11 {remains equal.}) 30... Nd6 31. Nc4 Qxb5 32. Qxb5
Nxb5 33. Rb2 Nc3 34. Rxb6 Nxe4 35. Rb7+ Kh6 36. Rb6 g4 37. hxg4 Kg5 38. Rb4 Nc5
(38... Ng3 $17 39. Ra1 e4) 39. Rb5 {[#]} (39. Rb6 $11) 39... Na4 $1 $17 40. Rc1
{[#]} (40. g3 $17) 40... Rd3 $1 $19 {And now ...Nc3 would win.} ({Don't blunder
} 40... Kxg4 $2 41. Rb4 $18) 41. Kf1 Rc8 {Strongly threatening ...Nc3.} ({
Reject} 41... Kxg4 $6 42. Rb4 $11) 42. Rb4 (42. Kf2 $142 Nc3 43. Rxc3 Rxc3 44.
Nd6) 42... Nc3 {White must now prevent ...Na2.} 43. Rc2 Nd5 44. Ra4 (44. Rb5
$142) 44... Rxe3 45. Rd2 $2 {[#]} (45. Rca2 Re4 46. Nd6 Rc1+ 47. Kf2 Rxg4 48.
Nf7+ Kh5 49. Rxg4 Kxg4 50. Rd2) 45... Re4 $1 {Black is clearly winning.} 46.
Rxd5 Rcxc4 47. Rxc4 Rxc4 {Weighted Error Value: White=0.32/Black=0.13} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "10.3"]
[White "Vachier-Lagrave, Maxime"]
[Black "Le, Quang Liem"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2751"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,119,25,16,14,22,43,18,18,16,12,10,24,1,36,4,29,29,29,18,22,25,21,22,
22,19,33,31,16,24,34,17,19,0,0,0,0,0,0,-8,25,25,25,25,25,26,22,21,40,49,48,49,
52,47,60,60,66,60,60,60,60,60,60,60,60,60,60,60,87,75,75,75,94,87,93,54,154,
136,352,332,510,504,751,738,680,660,1082,1070,1003,993,1105,1014,1124,1129,
5114,1154,5431,4281,7670,6512,29982,29980,29977,29978,29993,29994]} 1. e4 e5 2.
Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. O-O h6 7. Re1 O-O 8. Nbd2 Bb6 9. Bb3
$1 {[%mdl 4] is now more promising than 9.Nf1.} Ne7 {C54: Giuoco Piano: 4 c3
Nf6, main lines with 5 d4 and 5 d3.} 10. Nc4 c6 11. Nxb6 axb6 {The position is
equal.} 12. h3 Ng6 13. d4 {[#]} b5 $146 ({Predecessor:} 13... Qc7 14. Bc2 Be6
15. Be3 c5 16. a3 Rfc8 17. Qd2 Kh7 18. Rad1 Rd8 19. Kh2 Bc4 {1-0 (67) Sivokho,
S (2475)-Novikov,M (2370) St Petersburg 2005}) 14. a3 Re8 15. Bc2 Be6 16. Be3
Qe7 17. Qd2 Nh5 18. Kh2 Rad8 19. a4 bxa4 20. Rxa4 Ra8 21. Rea1 Rxa4 22. Rxa4
Nf6 23. Ra7 Bc8 24. dxe5 Nxe5 25. Nxe5 Qxe5+ 26. Bf4 Nxe4 27. Qe3 Qe6 28. f3 {
[%cal Re3e4]} g5 29. Bxe4 {And now Bxg5 would win.} gxf4 30. Qxf4 d5 31. Bb1 (
31. Bd3 {is more complex.} Kg7 32. Qg3+ Kh8 33. Ra8 Bd7 34. Ra4) 31... Qe5 32.
Qxe5 Rxe5 $14 {[%mdl 4096] Endgame KRB-KRB} 33. Ra8 Re8 34. Kg3 Kf8 35. Kf4 Ke7
36. Bf5 Bd7 37. Ra7 Rb8 38. g4 Be8 39. h4 f6 40. b4 Kd6 41. Ke3 c5 42. bxc5+
Kxc5 43. Ra5+ Kd6 44. Kd4 Bc6 45. Bg6 b5 (45... Rc8 $14) 46. Ra6 Rc8 $2 {
[#] This costs Black the game.} (46... b4 $16) 47. f4 Kc7 (47... Ra8 {was
necessary.} 48. Rxa8 Bxa8) 48. Bf5 $18 Rb8 49. Kc5 Be8 50. Rxf6 b4 51. cxb4
Rb5+ 52. Kd4 h5 53. g5 Rxb4+ 54. Ke5 Kd8 55. Rd6+ (55. g6 $142 Bxg6 56. Bxg6)
55... Ke7 56. Rxd5 Rb2 57. Rc5 Rh2 58. Rc7+ {White mates.} Kd8 59. Ra7 Rxh4 60.
Kd6 {[%cal Ra7a8] Weighted Error Value: White=0.06/Black=0.30} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "10.4"]
[White "Dominguez Perez, Leinier"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2758"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,76,15,10,9,26,10,17,0,6,6,0,0,0,0,0,0,7,0,32,31,33,20,46,38,35,28,16,
20,16,29,41,31,40,-11,22,14,27,30,26,20,53,21,19,0,254,245,249,239,387,0,94,0,
485,465,1064,755,736,726,29994,29995,29995,29996,29996,29997,29998,29999,29999]
} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Nbd2 O-O 7. h3 {C54:
Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} (7. O-O a5 8. h3 h6 9.
Re1 Be6 10. Bb5 Qb8 11. Nf1 Qa7 12. Qd2 a4 13. Ng3 Qa5 14. Bxc6 bxc6 15. Nh4
Kh7 16. Nhf5 {0-1 (44) Dominguez Perez,L (2750)-Vidit,S (2707) Hengshui 2019})
7... Bb6 8. Bb3 Ne7 9. Nc4 {The position is equal.} Be6 {[#]} (9... h6 {
keeps more tension.} 10. O-O Ng6 11. Re1 Be6 12. d4 c6) 10. Bc2 $146 ({
Predecessor:} 10. O-O Ng6 11. Re1 c6 12. Nxb6 Qxb6 13. Bc2 h6 14. d4 Rad8 15.
a4 a5 16. b4 axb4 17. cxb4 {1/2-1/2 (53) Kramnik,V (2490)-Krasenkow,M (2550)
Moscow 1991}) 10... Bxc4 11. dxc4 Ng6 12. g3 Re8 13. Nh2 Nf8 14. Ng4 Ne6 15.
Qf3 Nd7 16. h4 h5 17. Ne3 g6 18. Nd5 Bc5 19. b4 c6 20. bxc5 {Black must now
prevent Nb4.} cxd5 21. cxd5 Nexc5 22. g4 (22. Bg5 $14 Qa5 23. O-O) 22... hxg4 (
22... Qf6 $5 {[%cal Rf6f3]} 23. Qe2 hxg4 $11) 23. Qxg4 Nf6 24. Qf3 Nh5 $1 25.
Rg1 Nf4 (25... Qxh4 $2 26. Bg5 $18) 26. Bxf4 (26. h5 $5 Qf6 27. Qg4 $14) 26...
exf4 27. Qxf4 {Threatens to win with h5.} Qa5 $2 {[%mdl 8192]} (27... Re5 $11)
28. Kd2 $18 Rac8 {Strongly threatening ...Nxe4+!} 29. Rg3 $1 {And now h5 would
win.} Re5 (29... Qa3 {keeps fighting.} 30. Rag1 Kf8) 30. Rag1 $2 (30. h5 $1 $18
{[%cal Rh5g6]} Rxh5 31. Qg4 (31. Qxd6 Qb6 $16) 31... Nxe4+ 32. Bxe4) 30... Kg7
{[#]} (30... Qxa2 $2 31. Rxg6+ $1 {[%mdl 512]} Kf8 32. f3 $18) (30... Nxe4+ $1
$11 {keeps the balance.} 31. Bxe4 Qxa2+ 32. Kc1 Qa1+ 33. Kd2 Qb2+ 34. Kd1 Qb3+
35. Kd2 Qb2+ 36. Kd1 Qb3+ 37. Kd2 Qb2+) 31. h5 ({White should try} 31. a4 $1
$16 {Hoping for h5!} Qc7 32. Re1 (32. Rf3 Qe7 $11)) 31... Rxh5 $2 {[%mdl 8192]}
({Don't go for} 31... Qxa2 $2 {[#]} 32. Rxg6+ $1 {[%mdl 512]} Kf8 33. Rg8+ Ke7
34. Rxc8 $18) (31... Nxe4+ $1 $11 {and Black stays safe.} 32. Bxe4 Qxa2+ 33.
Kc1 Qa1+ 34. Kd2 Qa2+ 35. Kc1 Qa1+ 36. Kd2 Qa2+) 32. e5 {[%cal Rg3g6]
Threatening mate with Rxg6+!} Nd7 (32... Ne4+ $142 33. Qxe4 Kf8) 33. Bxg6 Qxd5+
34. Bd3+ Kh8 35. Qg4 {[%cal Rg4h5][%mdl 64] Double Attack. White mates.} Qxa2+
36. Bc2 {[%cal Rg4h5]} Qd5+ 37. Kc1 {[%cal Rg4h5]} Qxe5 {[#]} 38. Qg8+ $1 {
[%mdl 576] Back Rank} Rxg8 39. Rxg8# {Weighted Error Value: White=0.33/Black=0.
57} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "10.5"]
[White "Mamedyarov, Shakhriyar"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2782"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,28,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. dxe5
Nxb5 7. a4 Nbd4 8. Nxd4 Nxd4 9. Qxd4 d5 10. exd6 Qxd6 11. Qe4+ Qe6 12. Qd4 Qd6
13. Qe4+ Qe6 14. Qd4 Qd6 {[#]} {Predecessor:} 15. Qe3+ $146 {C67: Ruy Lopez:
Berlin Defence: 4 0-0 Nxe4.} Be7 16. Nc3 c6 17. Ne4 Qg6 18. Nc5 Qd6 19. Re1 b6
20. Ne4 Qe5 21. a5 bxa5 22. Rxa5 Qc7 23. Rg5 Kf8 24. Rxg7 h6 25. Qd4 Be6 26.
Rg6 fxg6 27. Qxh8+ {1-0 (25) Abdusattorov,N (2627)-Nakamura,H (2736) Chess.com
INT 2021} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "10.6"]
[White "Artemiev, Vladislav"]
[Black "Carlsen, Magnus"]
[Result "1/2-1/2"]
[ECO "D74"]
[WhiteElo "2704"]
[BlackElo "2847"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,77,11,19,5,24,18,8,12,23,9,11,14,22,25,14,17,26,22,16,27,52,35,36,12,
74,12,30,10,11,10,10,0,0,0,0,0,0,0,72,72,72,72,72,72,72,72,72,72,72,72,72,72,
72,64,72,72,72,72,72,72,72,0,72,0,72,0]} 1. c4 g6 2. d4 Nf6 3. Nf3 Bg7 4. g3
O-O 5. Bg2 c5 6. Nc3 d5 7. dxc5 dxc4 {has lost popularity (7...Qa5).} 8. O-O {
D74: Fianchetto Grünfeld: Main Line (5 Nf3 0-0 6 cxd5 Nxd5 7 0-0).} Qa5 9. Qd4
Nc6 10. Qxc4 {The position is equal.} Be6 11. Qh4 Qxc5 12. Be3 Qb4 13. Qxb4
Nxb4 14. Bc5 {[#]} Nbd5 $146 ({Predecessor:} 14... Nc6 15. Ng5 Bd7 16. Rfd1
Rfd8 17. Rac1 h6 18. Nf3 Rac8 19. Ne1 Ng4 20. Nd5 e6 21. Ne3 Nxe3 22. Bxe3 Nd4
23. Rxc8 Bxc8 24. Rd2 e5 25. b3 Rd7 {1/2-1/2 (25) Gierth,K (2280)-Lisetskaya,L
(2170) ICCF email 2013}) 15. Nd4 Nxc3 16. bxc3 Nd5 17. Nxe6 fxe6 18. Rad1 Rac8
(18... Bxc3 $11 19. Rd3 (19. Bxd5 exd5 20. Rxd5 Bf6 $11) 19... Bg7) 19. Bxa7 (
19. Bxd5 $16 exd5 20. Rxd5) 19... Rxc3 20. Bxd5 exd5 21. Rxd5 Ra8 22. Be3 Rxa2
23. Rb1 Rxe2 24. Rxb7 Bf6 25. Kf1 Rexe3 (25... Rcc2 $11 {remains equal.}) 26.
fxe3 $16 Rxe3 $11 {[%mdl 4096] Endgame KRR-KRB} 27. Kf2 Ra3 28. Rbd7 h5 29. Rd3
Ra2+ 30. Rd2 Ra3 31. R7d3 Ra1 32. Rd1 Ra4 33. Re1 Bd4+ 34. Kf3 Bf6 35. Re4 Ra2
36. Re2 Ra4 37. Re4 Ra2 38. Re2 Ra4 39. Re4 {Weighted Error Value: White=0.12/
Black=0.11} (39. h3 $16) 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "10.7"]
[White "Giri, Anish"]
[Black "Van Foreest, Jorden"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2776"]
[BlackElo "2698"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,83,0,0,1,-2,17,24,15,14,16,0,24,18,45,57,73,77,92,75,103,50,67,54,56,
38,37,55,35,58,102,88,108,111,131,117,133,132,136,101,154,147,245,245,243,246,
242,231,234,238,241,186,196,199,339,300,399,226,389,389,389,381,381,381,627,
627,625,612,570,556,500,475,29994,29995]} 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. e3 $5 {[%mdl 4] 8.Bf4 is setting a new trend. A
promising side line.} O-O 9. Bd3 Nxc3 {White has an edge.} 10. Qc2 Ne4 {[#]}
11. O-O $5 $146 {[%mdl 8] An interesting novelty.} ({Predecessor:} 11. Bxe4
dxe4 12. Qxe4 Na5 13. Qc2 c5 14. dxc5 Qe7 15. Bd2 Nc6 16. O-O Qxc5 17. Rfb1 {
1/2-1/2 (47) Mamedyarov,S (2747)-Fressinet,L (2700) Huaian 2016}) 11... Na5 12.
Ne5 Nf6 13. cxd5 exd5 14. Bd2 c6 15. Rab1 Be6 16. a4 ({White should play} 16.
Bxa5 $16 Qxa5 17. Rxb7) 16... Rb8 17. Rb2 Nc4 18. Nxc4 dxc4 19. Bxc4 Bxc4 20.
Qxc4 Qd5 21. Rc1 Qf5 22. f3 Rfd8 23. a5 h6 24. e4 Qd7 25. Bf4 Rbc8 ({Better is
} 25... b5 26. axb6 (26. Qxc6 Qxd4+ {[%mdl 64] Double Attack} 27. Rf2 Rdc8 $11)
26... Rxb6) 26. Be5 Ne8 {[#]} (26... Nh7 $16 27. Rcb1 b5 28. axb6 axb6) 27.
Rcb1 $1 $18 b5 28. axb6 axb6 29. Rxb6 Nd6 30. Qc5 Qe6 31. Bxd6 ({Don't do} 31.
Rxc6 $6 Nxe4 32. Rxc8 (32. Rxe6 Nxc5 33. Rd6 Na4 $16) 32... Rxc8 $16) 31...
Rxd6 32. d5 $1 {[%cal Rd5e6]} Qd7 (32... Qe7 {keeps fighting.} 33. Rf1 (33.
Rxc6 $2 Rcxc6 34. dxc6 Rd1+ {[%mdl 64] Discovered Attack} 35. Rxd1 Qxc5+ 36.
Kf1 f5 $19) 33... Qf8) 33. Rc1 f5 34. Rb7 Qxb7 $2 {[#]} (34... Qd8 35. Qc3 Qf8)
35. Qxd6 fxe4 {[%mdl 4096] Endgame KQR-KQR} 36. Qe6+ Kh8 37. dxc6 Qb6+ (37...
e3 38. Qxe3 (38. cxb7 $2 {leads to mate.} Rxc1#) 38... Qc7) 38. Kh1 Rd8 39.
Qxe4 Qc7 40. f4 Ra8 41. Qe5 Qxc6 (41... Rc8 $18 42. Qe6 Qd8) 42. Rxc6 {
Weighted Error Value: White=0.14/Black=0.58} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "10.8"]
[White "Liang, Awonder"]
[Black "Aronian, Levon"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2587"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "96"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,96,37,31,12,12,0,26,-24,13,23,20,3,25,-55,7,0,0,0,-12,-38,-27,-43,
-30,-64,-47,-25,-49,-70,-45,-53,-45,-46,-45,-43,-43,-75,-53,-56,-56,-139,-91,
-93,-89,-114,-75,-61,-37,-100,-52,-60,-54,-61,-45,-63,0,0,0,-162,-166,-124,
-100,-80,-52,-52,-52,-52,-67,-74,-5,-284,-270,-477,-345,-5631,-5535,-1568,-821,
-5122,-2730]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7.
c3 d6 8. d4 Bb6 9. a4 Rb8 10. axb5 {10.a5 deserves study.} axb5 11. Qd3 {
C78: Ruy Lopez: Archangelsk and Möller Defences.} O-O {11...Bd7 is not played
anymore.} 12. Bg5 h6 13. Bh4 {White has an edge.} (13. Qxb5 hxg5 14. Qxc6 exd4
$15) (13. Bxf6 $5 Qxf6 14. Qxb5 $14) 13... exd4 $5 {[%mdl 4] Exploring less
charted territory.} 14. cxd4 g5 15. Bg3 {[#] Threatens to win with e5.} Nh5 $1
{[#]} 16. Kh1 $146 ({Much worse is} 16. Qxb5 Bd7 $17) (16. Rc1 $11 Bb7 17. Nc3)
({Predecessor:} 16. Rc1 Ne7 17. Nc3 Kg7 18. Nxb5 Ng6 19. Nc3 Nhf4 20. Qd2 f5
21. Bc2 fxe4 22. Bxe4 {1/2-1/2 (40) Svidler,P (2723)-Dubov,D (2702) Moscow 2020
}) 16... Kg7 (16... g4 $1 $15 17. Qxb5 Nxg3+ 18. fxg3 gxf3 19. Qxc6 fxg2+ 20.
Kxg2 Bxd4) 17. Nc3 f5 18. exf5 ({Much weaker is} 18. Nxb5 f4 $17) 18... Bxf5
19. Qxb5 Nxd4 20. Nxd4 Bxd4 21. Qc4 c5 22. Nb5 Nxg3+ 23. fxg3 Be5 24. Qe2 Bg6
25. Bc4 Rxf1+ 26. Rxf1 Qd7 27. Nc3 Rf8 28. Rxf8 Kxf8 29. Bd3 (29. Qf3+ $15 Kg7
30. g4) 29... Bxd3 30. Qxd3 Qf7 31. h3 Qf2 32. Kh2 c4 33. Ne4 Qf7 34. Qa3 Qd5
35. Qf3+ Ke7 $1 36. Qf5 Kd8 (36... Qe6 $15 37. Qf2 {[#]} Bxb2 $1 38. Nxd6 Kxd6
39. Qxb2 Kc6) 37. Qf8+ $11 Kc7 38. Nf6 (38. Nc3 $11 {and White is okay.} Qe6
39. Qa8) 38... Qe6 $19 39. Ng4 Bxb2 40. Qf2 Be5 41. Qa7+ Kd8 42. Qb6+ Ke7 {
And now ...c3 would win.} 43. Qc7+ Kf8 {White must now prevent ...c3.} 44. Qd8+
$2 {[%mdl 8192] White does not recover from this.} (44. Nxe5 $11 {and White
stays safe.} dxe5 45. Kg1) 44... Kg7 45. Qc7+ $2 (45. Nxe5 dxe5 46. g4) 45...
Kg6 46. Qc6 $2 (46. Qb7 c3 47. Qe4+ Kg7 48. Nxe5 Qxe5 49. Qb7+ Kg6 50. Qc8)
46... Bd4 {Black is clearly winning.} 47. Qf3 h5 {( -> ...Qe1)} 48. Nf2 Qf5 {
Weighted Error Value: White=0.76/Black=0.31} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "11.1"]
[White "Aronian, Levon"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "C17"]
[WhiteElo "2782"]
[BlackElo "2738"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,121,-16,-24,4,-15,0,0,0,0,0,0,0,0,13,-12,-13,-10,-9,-12,-8,-8,-19,
-27,-21,-20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-10,-6,-8,0,0,18,20,20,17,20,18,18,4,
20,18,20,20,27,27,24,26,35,8,8,8,25,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,17,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4.
e5 c5 5. Bd2 Ne7 6. Nb5 Bxd2+ 7. Qxd2 O-O 8. c3 Bd7 {C17: French: 3 Nc3 Bb4 4
e5 c5 sidelines.} 9. Nf3 Bxb5 10. Bxb5 Qb6 11. Bd3 cxd4 12. cxd4 Nbc6 13. O-O {
[#]} Qb4 $146 (13... Ng6 {looks sharper.} 14. Bc2 Rfc8 15. Bxg6 fxg6 16. Rac1
Rf8) ({Predecessor:} 13... Nb4 14. Bb1 h6 15. a3 Nbc6 16. Qd3 g6 17. Qd2 Kh7
18. h4 Nf5 19. Rd1 Na5 {0-1 (46) Perunovic,M-Akobian,V Bratislava 1993}) 14.
Rfd1 (14. Qe3 {seems wilder.} Na5 15. Rfb1 Rac8 16. b3 h6 17. h4) 14... Qxd2
15. Rxd2 Rfc8 16. Kf1 h6 17. h4 h5 18. Ke2 Nb4 19. Bb1 Rc7 20. a3 Nbc6 21. b4
b5 22. Bd3 a5 23. Rb1 axb4 24. axb4 Rb7 25. Rc2 Ra4 26. Rc5 Nxb4 27. Bxb5 Ra2+
28. Kf1 Na6 29. Rcc1 Nc7 30. Bd3 Raa7 31. g3 g6 32. Rxb7 Rxb7 33. Rc5 Kg7 34.
Ke2 Ra7 35. Ng5 Na8 36. Rb5 Nc7 37. Rb6 Na8 38. Ra6 (38. Rb1 {keeps more
tension.} Nc6 39. Ke3 Na5 40. Rb2 Nc6 41. f3) 38... Rxa6 39. Bxa6 $11 {[%mdl
4096] Endgame KBN-KNN} Nb6 40. Bb5 {Threatens to win with Be8.} Nf5 {The
position is equal.} 41. Kd3 Kf8 42. Kc3 Nc8 43. Nh7+ Kg7 44. Nf6 Nce7 45. Bd3
Kf8 46. Bc2 Kg7 47. Ba4 Kf8 48. Nh7+ Kg7 49. Ng5 Kf8 50. Bc2 Kg7 51. Nf3 (51.
Nh3 {feels hotter.} Kf8 52. Ng1 Kg8 53. Ne2 Nh6 54. Kd2) 51... Nh6 52. Ne1 Ng4
53. Nd3 Nf5 54. Bd1 Ngh6 55. Nc5 Ne7 56. Nd7 Nef5 57. Nf6 Kf8 58. Nh7+ Kg7 59.
Nf6 Kf8 60. Nh7+ Kg7 61. Nf6 {Not much happened in this game.  Weighted Error
Value: White=0.03/Black=0.03} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "11.2"]
[White "Van Foreest, Jorden"]
[Black "Liang, Awonder"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2698"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,99,-20,-4,-29,-20,-58,-68,-69,-74,-72,-18,-44,31,28,73,91,72,60,55,57,
66,52,44,40,58,64,81,68,87,97,103,95,97,107,157,164,143,143,154,150,150,110,
216,217,206,208,252,259,283,286,598,598,598,598,591,595,591,591,572,519,574,
552,537,529,529,529,521,472,445,343,364,336,306,276,532,462,641,569,630,625,
687,662,600,519,1320,909,1431,883,29986,29987,29987,29988]} 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] Leaves trodden paths.} b4 {[%cal Rb4c3]} 8. e5 {Black is slightly
better.} bxc3 9. exf6 cxb2 10. fxg7 {[#]} Bxg7 $146 ({Inferior is} 10... bxc1=Q
11. gxh8=Q Qa5+ 12. Kf1 $16) (10... bxa1=Q $15 11. gxh8=Q Qa5+ 12. Nd2 c3) ({
Predecessor:} 10... bxa1=Q 11. gxh8=Q Qa5+ 12. Kf1 Q5xa4 13. Qxa4 Qxa4 14. g3
Nd7 15. Kg2 Bb7 16. Bf4 O-O-O 17. Qxh7 {1/2-1/2 (43) Halkias,S (2553)
-Heinemann,J (2255) Riga 2019}) 11. Bxb2 $14 Qa5+ {[#]} 12. Nd2 $1 Ba6 {
aiming for ...c3.} 13. Rc1 O-O 14. O-O Nd7 15. Bxc4 Bxc4 16. Nxc4 Qd5 17. Ne3
Qd6 18. Qf3 $36 {[%mdl 2048] White has some pressure.} Rac8 19. Nc4 Qd5 20. Ba3
Qxf3 21. gxf3 Rfd8 22. Be7 Bxd4 23. Bxd8 Rxd8 24. Na5 Ne5 25. f4 Bb6 26. fxe5
$18 Bxa5 27. Rxc6 {[%mdl 4096] Endgame KRR-KRB} Rd5 28. f4 Rd4 29. Kh1 Rxa4 $2
(29... h6 {is a better chance.} 30. f5 exf5 31. Rxh6 Bb6 32. Rxf5 Rxa4) 30. Ra6
Ra3 31. Rxa7 Bb4 32. Rg1+ Kf8 33. Rb7 Bc5 34. Rb8+ Ke7 35. Rc1 Ra5 36. Rc8 Bb6
37. Rb1 Bd8 38. Rd1 Bb6 39. Rd6 Be3 40. Rc7+ Ke8 41. Rc4 Ra2 $2 (41... Rc5 42.
Rxc5 Bxc5) 42. Rd3 Bf2 43. Rc8+ Ke7 44. Rb3 {[%cal Rb3b7] [#]} Ra7 45. Rh8 Be1
46. Rd3 {And now Rdd8 would win.} Ra4 (46... Ba5 $142 47. Kg2 Rb7 48. Rxh7 Kf8)
47. Rdd8 {[%csl Gd8][%cal Rh8e8]} f5 48. Rd1 Bf2 49. Rxh7+ Ke8 50. Rb1 {
[%cal Rb1b8] Weighted Error Value: White=0.11/Black=0.51} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "11.3"]
[White "Carlsen, Magnus"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2847"]
[BlackElo "2776"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,123,0,8,0,0,0,0,0,0,0,31,17,9,16,9,7,16,12,25,7,0,0,0,0,2,0,0,0,6,0,
10,12,12,15,60,75,84,0,0,0,9,5,5,5,5,5,5,0,1,0,50,14,26,29,56,49,39,-87,-87,
-88,-88,-88,-88,-114,-111,-116,-116,-116,-115,-112,-95,-95,-95,-98,-101,-108,
-95,-98,0,0,0,0,0,-98,-98,-99,-99,-99,0,0,0,0,0,0,0,0,0,0,0,-28000,-28000,
-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,-28000,
-28000,-28000,-28000,-28000]} 1. e4 c5 2. Nc3 Nc6 3. Nf3 g6 4. Bb5 Bg7 5. d3 (
5. O-O d6 6. Re1 Bd7 7. a4 Rc8 8. d3 Nf6 9. Nd5 O-O 10. Bg5 a6 11. Bxf6 exf6
12. Bc4 f5 13. c3 fxe4 14. dxe4 Na5 15. Qd3 {1-0 (29) Carlsen,M (2832)-Giri,A 
(2771) Stavanger 2017}) 5... d6 6. e5 {B30: Sicilian: 2...Nc6 3 Bb5, lines
without ...g6.} (6. O-O {is interesting.} Bd7 7. a4 Nf6 8. Re1 O-O 9. h3) 6...
dxe5 7. Bxc6+ bxc6 8. O-O {The position is equal.} c4 {[#]} 9. h3 $146 ({
Predecessor:} 9. Re1 Bg4 10. h3 Bxf3 11. Qxf3 Rc8 12. dxc4 Qc7 13. Bg5 Nf6 14.
Qe3 h6 15. Bh4 {1/2-1/2 (41) Gasanov,E (2454)-Askarian,K (2253) Kharkov 2002})
9... Be6 10. Re1 Qc7 11. Qe2 {[%cal Rf3e5]} cxd3 12. cxd3 {[%cal Rf3e5]} Nf6
13. Nxe5 O-O 14. Bf4 Qb7 15. Rac1 Nd5 16. Bg3 Nxc3 17. Rxc3 Bd5 18. d4 a5 19.
h4 Bxa2 20. Nxc6 e6 21. Be5 f6 22. Bd6 {Qc2 is the strong threat.} Rfe8 {[#]}
23. Ra1 ({White should try} 23. Ne7+ $1 $16 Kh8 24. Ra1) 23... Bd5 $11 24. Nxa5
Qa6 $36 {[%mdl 2048] Black has some pressure.} 25. Qxa6 Rxa6 26. Bc5 Rb8 27. b4
Bf8 28. Ra4 Bh6 29. Ra1 Raa8 {White should prevent ...Bd2.} 30. Rc2 Bf8 31. Rb2
Rb5 32. Nb3 Rab8 33. Ra5 (33. Ra4 $14) 33... Rxb4 $17 34. Bxb4 Rxb4 35. Rxd5
exd5 {[%mdl 4096] Endgame KRB-KRN} 36. g3 f5 37. Kf1 Bg7 38. Rb1 Kf7 39. Ke2 h5
40. Nd2 Rxb1 ({Reject} 40... Rxd4 $6 41. Rb7+ Kg8 42. Rb8+ Kh7 43. Nf3 $11) 41.
Nxb1 Bxd4 {KB-KN} 42. Nd2 f4 43. Kf3 fxg3 (43... Be5 $17 {And now ...fxg3
would win.} 44. g4 Bd6 45. gxh5 gxh5) 44. fxg3 $11 Bf6 45. Nb3 Ke6 {Threatens
to win with ...Ke5.} 46. Nc5+ (46. g4 $11 {remains equal.}) 46... Kf5 $17 47.
Nd3 Be5 48. Nf2 Ke6 (48... Bd6 $17 {White must now prevent ...Be5.} 49. Nd1 d4)
49. g4 $11 Bd6 50. gxh5 gxh5 51. Nd1 Ke5 {aiming for ...d4.} (51... d4 {
feels hotter.} 52. Ke4 Bc5 53. Nb2 Be7 54. Nd3 Bxh4) 52. Nc3 d4 (52... Be7 $5)
53. Nb5 Be7 54. Nxd4 Kxd4 {Mate.} 55. Kg2 Bxh4 56. Kh1 Bg5 57. Kg2 Ke4 58. Kh1
Kf3 59. Kg1 Kg3 60. Kh1 h4 61. Kg1 h3 62. Kh1 h2 {Weighted Error Value:
White=0.10/Black=0.06} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "11.4"]
[White "So, Wesley"]
[Black "Artemiev, Vladislav"]
[Result "0-1"]
[ECO "C79"]
[WhiteElo "2772"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,76,32,45,16,16,15,12,10,7,29,27,21,12,1,43,31,63,55,87,42,42,43,43,0,
0,0,47,47,47,49,58,59,58,54,62,59,66,18,25,25,26,0,37,34,34,11,29,-402,-409,
-408,-404,-391,-402,-489,-485,-721,-719,-697,-696,-5173,-5057,-29973,-5510]} 1.
e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. c3 g6 7. d4 Bg7 8. Re1 Nf6
$1 {[%mdl 4] is more profitable than 8...Nge7 at the moment.} 9. Bxc6 {C79:
Ruy Lopez: Steinitz-type lines with 3...a6 4 Ba4 Nf6 5 0-0 d6.} Bxc6 10. dxe5
Nxe4 11. exd6 {The position is equal.} O-O 12. dxc7 Qxc7 13. Be3 Rfe8 14. Nbd2
{[#]} Rad8 $146 ({Predecessor:} 14... Nxd2 15. Nxd2 Rad8 16. Qc2 Qd7 17. Rad1
Qd5 18. Nf3 Qxa2 19. Rxd8 Rxd8 20. Nd4 Bd5 {1-0 (38) Vachier Lagrave,M (2788)
-Caruana,F (2795) Chess.com INT 2016}) 15. Nd4 Bd5 16. Nxe4 Rxe4 17. Qd2 Rg4
18. g3 Re4 19. Bh6 Bxd4 20. cxd4 Rde8 21. Rxe4 Rxe4 22. Rc1 Qd8 {[#]} 23. Qa5
$1 Re8 24. Qxd8 Rxd8 $14 {[%mdl 4096] Endgame KRB-KRB} 25. Rc7 Bc6 26. g4 f5
27. gxf5 {Rg7+ is the strong threat.} Rxd4 {[%cal Rd4d1]} 28. h3 {Strongly
threatening Rg7+.} (28. f3 {feels hotter.} Rh4 29. Rc8+ Kf7 30. Bg5 Rh5 31. f4)
28... Rd7 (28... Rh4 {with more complications.} 29. Rc8+ Kf7 30. Rf8+ Ke7 31.
Bg5+ Kxf8 32. Bxh4 gxf5 33. Kh2 Kf7) 29. Rc8+ Kf7 30. Rf8+ Ke7 31. fxg6 $2 {
[%mdl 8192] Loses the game.} (31. Kh2 $11) 31... Rd1+ $19 32. Kh2 Rh1+ 33. Kg3
Rg1+ 34. Kh4 Rxg6 35. Kh5 {[#]} (35. Bg7 $142) 35... Rxh6+ $1 {[%mdl 576]
Remove Defender} 36. Kxh6 Kxf8 37. Kxh7 Kf7 38. h4 Bf3 {Weighted Error Value:
White=0.96/Black=0.07} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "11.5"]
[White "Vidit, Santosh Gujrathi"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2726"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "102"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,102,6,8,-6,6,4,1,-22,-16,-20,-14,-22,10,18,19,20,26,25,39,30,37,36,76,
25,37,25,38,25,42,37,21,22,60,-8,-18,-27,0,-33,78,78,124,0,0,0,0,0,0,0,0,0,7,0,
81,85,137,145,145,0,65,66,216,213,200,0,0,-102,0,0,29,0,0,0,0,0,0,0,84,84,84,
84,116,116,116,116,116,116,116,140,140,0,140,0,140,0,140]} 1. d4 d5 2. c4 e6 3.
Nf3 a6 4. c5 b6 5. cxb6 c5 6. Nc3 {D30: Queen's Gambit Declined: Systems
without Nc3.} Nf6 7. e3 Nbd7 {[#]} 8. b3 $146 ({Predecessor:} 8. Na4 cxd4 9.
Qb3 Rb8 10. Nxd4 Bb7 11. Bd2 Ne4 12. Bb4 Nec5 13. Nxc5 Nxc5 14. Bxc5 Bxc5 15.
Bxa6 Bxa6 {1-0 (39) Saeed,I (2200)-Perunovic,M (2632) Dubai 2015}) 8... cxd4 9.
exd4 Qxb6 10. Bd3 Bd6 11. O-O O-O 12. Na4 Qb8 13. Bb2 Bb7 14. Rc1 Ne4 15. Qe2
h6 16. g3 (16. Ne5 $1 $16 {[%cal Re5d7]} Nxe5 17. dxe5 Bxe5 18. Bxe5 Qxe5 19.
Nc5) 16... Re8 17. Rfe1 Qa7 18. Rc2 Rac8 19. Rec1 Rxc2 20. Rxc2 Qa8 21. a3 (21.
Ne5 $14 Bxe5 22. dxe5) 21... Bc6 $11 22. Nc3 Nxc3 23. Bxc3 Bxa3 (23... Rb8 $15
{keeps the upper hand.}) 24. b4 $1 $16 Qb8 25. Bxa6 (25. Bd2 $1 $16 Rc8 26. Qe1
) 25... Ba4 $11 {[%cal Ra4c2]} 26. Ra2 Bxb4 {Threatens to win with ...Bb3.} 27.
Rb2 Bxc3 28. Rxb8 Rxb8 29. Bd3 Rb2 30. Qe3 Nf6 (30... Bb4 $11) 31. Qc1 $1 $16 {
[%cal Rc1c3][%mdl 1024] White has strong compensation.} Rb3 ({Black should play
} 31... Ne4) 32. Bc2 $1 {[%cal Rc2b3]} Bb2 {[#]} 33. Qd1 ({Only move:} 33. Qf4
$1 $16 Rxf3 34. Qb8+ Be8 35. Qxb2) 33... Ra3 (33... Rc3 $11 34. Ne1 (34. Bxa4
Rc1 $17) 34... Bxc2 35. Nxc2 Ne4) 34. Kg2 $1 $14 ({Weaker is} 34. Bxa4 Ra1 $17)
34... Bxc2 (34... Ra1 $1 $14 35. Qe2 Be8) 35. Qxc2 $18 Bc3 {[#]} 36. Qb1 (36.
Qc1 $1 $18 {[%cal Rc1a3]} Rb3 37. Nd2 Bxd2 38. Qc8+ Kh7 39. Qc2+ {[%mdl 64]
Double Attack} g6 40. Qxb3) 36... Ne4 $11 37. h4 (37. Ne5 $11 Bxd4 38. Qb8+ Kh7
39. Nd7) 37... Ra1 ({Better is} 37... Ra4 $17 {And now ...Rb4 would win.} 38.
Kh3 Nxf2+ 39. Kg2 Ne4) 38. Qb3 Ra8 39. h5 Kh7 40. Qb7 Ra2 41. Qxf7 Rxf2+ 42.
Kg1 Rxf3 43. Qxf3 $16 {Strongly threatening Qe3.} Bxd4+ 44. Kg2 Bf6 45. Qg4 Ng5
46. Qa4 e5 47. Qe8 e4 48. Qg6+ Kh8 49. Qe8+ Kh7 50. Qg6+ Kh8 51. Qe8+ Kh7 {
Weighted Error Value: White=0.28/Black=0.26} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "11.6"]
[White "Le, Quang Liem"]
[Black "Dominguez Perez, Leinier"]
[Result "0-1"]
[ECO "D26"]
[WhiteElo "2709"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,124,13,14,13,10,11,12,10,20,23,27,25,22,17,14,12,25,12,10,12,20,9,25,
8,45,46,46,45,38,40,31,14,20,20,16,17,28,30,110,36,38,20,35,20,16,0,34,0,0,0,1,
4,5,5,5,6,9,0,2,0,29,29,65,63,66,66,65,62,63,63,63,63,63,70,70,-8,-8,-8,-8,-8,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-29976,-29978,-29978,-29979,-29979,
-29980,-29980,-29981,-29981,-29982,-29982,-29983]} 1. d4 d5 2. c4 dxc4 3. Nf3
Nf6 4. e3 e6 5. Bxc4 c5 6. O-O Nc6 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. a3 {D26:
Queen's Gambit Accepted: 4 e3 e6 5 Bxc5 c5 sidelines.} O-O 10. b4 Be7 11. Bb2 {
The position is equal.} Bd7 12. Nbd2 Rfd8 13. Rac1 Be8 {[#]} 14. Kf1 $146 ({
Predecessor:} 14. Nb3 b6 15. h3 Rxd1+ 16. Rxd1 Rd8 17. Rxd8 Bxd8 18. b5 Nb8 19.
Be5 Nbd7 20. Bh2 {1-0 (30) Varga,C (2089)-Fodor,I (2137) Budapest 2002}) 14...
Rac8 15. Be2 Nb8 16. Rxc8 Rxc8 17. Nc4 Nd5 18. Nd4 Ba4 19. Rc1 Be8 20. g3 b5
21. Na5 Rxc1+ 22. Bxc1 a6 23. e4 Nc3 24. Bd3 Bf6 25. Nab3 e5 26. Nf5 Bc6 (26...
Na4 $11) 27. f3 (27. Nc5 $16) 27... Na4 $14 28. Ke2 Kf8 29. h4 Bd8 30. Be3 Nd7
(30... g6 $5 {[%cal Rg6f5]} 31. Bh6+ Ke8 $11) 31. Na5 Bxa5 32. bxa5 Nb2 33. Bd2
Nxd3 34. Kxd3 $11 {[%mdl 4096] Endgame Black must now prevent Bb4+. KBN-KBN} f6
35. Bb4+ Kf7 36. Ke3 g6 37. Nd6+ Ke6 38. f4 exf4+ 39. gxf4 f5 40. e5 $1 h6 41.
Kd4 g5 42. Ne8 {Threatens to win with Nc7+.} Nxe5 $1 43. Nc7+ {[%mdl 64] [#]
Double Attack} Kd7 44. Kxe5 gxh4 45. Be1 h3 46. Bg3 Kxc7 47. Kxf5 {KB-KB} Bd7+
48. Kg6 Kd6 49. f5+ Kc5 50. f6 {And now f7 would win.} Be6 51. f7 (51. Kxh6 {
is more complex.} Kc4 52. Kg7 Kb3 53. Bd6 Ka4 54. Kg6) 51... Bxf7+ 52. Kxf7 {
KB-KP} Kc4 {...Kb3 is the strong threat.} 53. Kg6 Kb3 54. Bd6 ({Avoid the trap
} 54. Kxh6 $2 Kxa3 55. Kh5 b4 $19) 54... Ka4 55. Kxh6 Kxa5 {aiming for ...Ka4.
KB-K3P} 56. Kg5 Ka4 {Hoping for ...h2!} 57. Kg4 $2 {[%mdl 8192] [#]} (57. Kf5
$11) 57... h2 $1 {[%cal Rh2h1] Black mates.} 58. Bxh2 Kxa3 59. Kf3 b4 {[%cal
Bb5b4,Bb4b3][%mdl 32]} 60. Bd6 a5 61. Ke2 Ka2 62. Kd2 b3 {Weighted Error Value:
White=0.21/Black=0.06} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "11.7"]
[White "Firouzja, Alireza"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1-0"]
[ECO "D90"]
[WhiteElo "2759"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,5,0,-8,-5,-16,-24,-26,0,0,0,0,14,0,64,52,69,0,0,16,2,-80,136,137,
139,141,129,147,133,133,139,137,135,137,141,149,127,102,170,206,304,286,308,
275,347,348,375,383,429,430,430,424,464,464,450,447]} 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 has an edge.} Nxh5 9. Nxb5 O-O 10. Bxc4 Bg4 11. Qc2 Na6 {[#]} (
11... a6 $11 12. Nc3 Bxf3 13. gxf3 Qd6) 12. Be3 $5 $146 {[%mdl 8] New and
interesting.} ({Predecessor:} 12. Kf1 Nc7 13. Nc3 e6 14. Bg5 Qd7 15. Rd1 exd5
16. Nxd5 Nxd5 17. Rxd5 Qb7 18. Rxc5 {1/2-1/2 (24) Rozum,I (2606)-Svidler,P 
(2755) Sochi 2017}) 12... Rb8 {[#] Threatens to win with ...Rxb5!} 13. Qd2 ({
White should try} 13. Nc3 $14) 13... Nc7 $11 14. Nc3 Ne8 15. Bh6 (15. Bd3 $11)
15... Rxb2 $2 16. Qxb2 $16 Bxh6 17. Ne5 $36 {[%mdl 2048] White is on the roll.}
Bd7 18. Be2 Bg7 19. Nxd7 Qxd7 20. Bxh5 gxh5 21. Rc1 ({But not} 21. Rxh5 $6 Qg4
$11) 21... Qg4 22. Qe2 Qg5 23. Qe3 Qxe3+ (23... Qxg2 $16 {was necessary.} 24.
Ke2 (24. Rxh5 Nd6 $16) 24... Qg4+ 25. f3 Qg2+ 26. Qf2 Qg6) 24. fxe3 $18 Be5 (
24... Nd6 {keeps fighting.} 25. Rxh5 Rd8) 25. Rxh5 f6 {and the idea ...Nd6
leaves Black hopeful.} 26. Na4 Nd6 27. Nxc5 Rc8 {Black hopes to continue with .
..Bb2.} 28. Kd1 Bb2 29. Rc2 {White is clearly winning.} Ba3 30. Ne6 Rxc2 31.
Kxc2 Nxe4 32. Rh4 {Weighted Error Value: White=0.13/Black=0.29} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "11.8"]
[White "Naroditsky, Daniel"]
[Black "Hansen, Eric"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "2623"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,92,-31,-6,-40,-36,-31,-40,-39,8,7,8,9,20,0,8,0,0,0,0,0,-16,-116,-29,
-49,-43,-37,0,0,0,0,0,0,0,0,0,0,6,0,0,0,0,0,27,20,151,127,117,64,89,83,83,83,
83,90,102,52,56,52,52,44,44,44,44,33,26,26,44,44,44,44,44,37,37,37,44,29,33,28,
33,0,33,0,33,0,33]} 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 Be7 6. Bd3
{C47: Scotch Four Knights and Four Knights with 4 g3.} O-O 7. O-O d6 8. h3 {
Black is slightly better.} Nxd5 9. exd5 Ne5 {[%cal Bc6e5,Be5c4,Bc4b6,Bb6d5]
[%mdl 32]} 10. Nxd4 {[#]} Bf6 $146 ({Predecessor:} 10... Nxd3 11. Qxd3 Bf6 12.
c3 Bd7 13. Bf4 Re8 14. Rad1 Be5 15. Bc1 Qf6 16. Ne2 Bf5 {0-1 (34) Den Heeten,
D-Beekhuis,M Nijmegen 2001}) 11. Be4 Re8 12. c3 Bd7 13. Qc2 g6 14. f4 Nc4 15.
b3 {[#]} (15. f5 $11 {keeps the balance.} Bg7 16. b3) 15... Qe7 $1 16. Re1
Bxd4+ 17. cxd4 Nb6 18. Bd2 Qf6 19. Qc3 Rxe4 20. Rxe4 Nxd5 21. Qf3 Bc6 22. Rae1
Qf5 23. g4 Qd7 {Strongly threatening ...Nf6.} 24. Qf2 f5 25. Re6 $36 {[%mdl
2048] Black is under pressure.} Qf7 26. Qh4 Re8 (26... Qf8 $11 {remains equal.}
) 27. gxf5 gxf5 28. Qg5+ (28. Rxe8+ $16 Bxe8 29. Qd8) 28... Kf8 29. Qh6+ Kg8
30. Rxe8+ Bxe8 31. Kh2 Kh8 32. Qg5 {Threatens to win with Qd8.} Bc6 33. Rg1 Qf8
34. Be1 (34. Qg3 {is more complex.} Qf7 35. Qg2 Bd7 36. Qg5 Qf8 37. a4) 34...
h6 35. Qh4 (35. Qh5 {is interesting.} Be8 36. Qf3 Bf7 37. Qd3 Qe7 38. Bf2)
35... Kh7 36. Bf2 (36. Bd2 {is interesting.} a6 37. Qf2 Qf7 38. Be1 Bd7 39. Qf3
) 36... Qf7 37. Qg3 a6 38. Be1 Bb5 39. Bc3 Bc6 40. Bb2 Bb5 41. Re1 Bc6 42. a4 (
42. Bc3 {feels hotter.} Qf6 43. Ba5 Bd7 44. Rg1 Qf7 45. Qf3) 42... Bd7 43. Rg1
Bc6 44. Re1 Bd7 45. Rg1 Bc6 46. Re1 Bd7 {Weighted Error Value: White=0.14/
Black=0.15} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "12.1"]
[White "Duda, Jan-Krzysztof"]
[Black "Hansen, Eric"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2738"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,93,16,0,24,21,27,21,18,0,0,0,0,0,36,33,37,0,0,0,0,0,0,0,0,0,0,0,0,0,
3,3,104,104,106,106,111,111,111,111,111,97,111,97,104,97,97,97,122,83,83,83,
138,83,83,83,83,83,90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3.
Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3 d6 7. Nf3 b6 8. g3 Bb7 9. Bg2 Nbd7 {
[%cal Bb8d7,Bd7c5,Bc5e4][%mdl 32]} 10. O-O c5 {is the legacy move (10...h6).}
11. Rd1 {has lost popularity (11.b4).} Qe7 {E32: Nimzo-Indian: Classical (4
Qc2): 4...0-0.} 12. b3 Rac8 13. Bb2 d5 14. dxc5 Nxc5 15. Ne5 {[#]} dxc4 $146 ({
Predecessor:} 15... Nfe4 16. Bxe4 Nxe4 17. Nc6 Qg5 18. Ne7+ Kh8 19. Qxg7+ Qxg7
20. Bxg7+ Kxg7 21. Nxc8 Rxc8 {0-1 (71) Holst,C (2225)-Efremov,R (2335)
Polanica Zdroj 1998}) 16. Bxb7 Qxb7 17. Nxc4 {Nd6 is the strong threat.} Rfd8
18. Nd6 Rxd6 {[%mdl 64] [#] Remove Defender, Decoy} 19. Rxd6 {Hoping for Rad1.}
Nce4 {[%mdl 64] Double Attack} 20. Qd3 {Threatens to win with Rd8+.} Nxd6 21.
Qxd6 $40 {[%mdl 128] White has some attack.} Qe4 22. Re1 h5 23. Bxf6 gxf6 $11 {
[%mdl 4096] Endgame KQR-KQR} 24. Qe7 Kg7 25. Qxa7 Ra8 (25... Qd4 $11 {remains
equal.}) 26. Qxb6 $16 Rxa3 27. Qc5 Rxb3 28. Qxh5 Qb4 29. Rd1 {And now Rd8
would win.} Qe4 30. h3 Rb2 31. Re1 Qb4 32. Kf1 (32. Ra1 {feels hotter.} Qd4 33.
e3 Qe4 34. Qd1 Qf5 35. Qf1) 32... Qe4 {[%cal Re4h1] [#]} 33. Qf3 f5 34. Qc3+
Kg8 {[%cal Re4h1]} 35. f3 Qb7 ({Better is} 35... Rc2) 36. Qf6 (36. Rd1 $142 {
White threatens Rd8+ and mate.} Rb1 37. Rxb1 Qxb1+ 38. Kg2) 36... Qb5 37. h4
Rc2 38. Qg5+ Kh7 39. g4 (39. Qe3 $16) 39... Qe5 $11 {The position is equal.}
40. Qh5+ Kg7 41. Qg5+ Kh7 42. gxf5 exf5 43. Qh5+ Kg7 44. Qg5+ Kh7 45. Qg2 Rc4
46. Qh3 Qf6 47. Kg2 {Weighted Error Value: White=0.08/Black=0.11} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "12.2"]
[White "Vachier-Lagrave, Maxime"]
[Black "Naroditsky, Daniel"]
[Result "1-0"]
[ECO "E75"]
[WhiteElo "2751"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,147,24,34,43,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-17,0,-8,0,-270,0,0,6,0,0,0,
2,0,0,-34,25,0,0,0,0,0,34,31,41,39,29,29,37,32,26,35,51,47,49,36,99,104,220,
179,238,227,220,164,137,139,193,200,290,286,309,259,288,195,187,182,182,182,
255,273,243,187,187,175,195,213,213,193,213,213,334,333,359,358,370,377,1889,
1851,1694,1527,4760,5189,2938,2808,4586,7516,29980,29981,29978,29979,29976,
2239,29975,29976,29977,29976,29974,2091,3221,1492,29988,937,4708,4602,29980,
29981,29981,29982,29982,29983,29984,29985,29985,29986]} 1. Nf3 Nf6 2. c4 g6 3.
Nc3 Bg7 4. d4 O-O 5. e4 d6 6. Bg5 c5 7. d5 e6 8. Be2 exd5 9. exd5 h6 10. Be3
Bg4 {[#] E75: King's Indian: Averbakh Variation: 6...c5 7 d5 e6.} 11. Nd2 $146
({Predecessor:} 11. O-O Re8 12. Re1 a6 13. h3 Bxf3 14. Bxf3 Nbd7 15. Qd2 Kh7
16. Bf4 Ne5 17. Be2 Nfd7 18. Nd1 {1/2-1/2 (30) Pecorini,J (1609)-Neu,A (1778)
Belp 2015}) 11... Bxe2 12. Qxe2 ({But not} 12. Kxe2 Ng4 $17) 12... Re8 {
The position is equal.} 13. O-O Nbd7 14. Rae1 a6 15. a4 Qb6 16. b3 Qb4 17. Rc1
Re7 18. h3 Rae8 19. Qd3 Nh5 20. Nce4 $2 {[%mdl 8192]} (20. Ne2 $1 $11) 20...
Qb6 $2 (20... f5 $1 $19 21. f3 (21. Nxd6 $2 Rxe3 22. fxe3 Rxe3 $19) 21... fxe4
22. Nxe4 Qb6) 21. g4 $1 $11 {[%cal Rg4h5]} Nhf6 22. Ng3 Ne5 23. Qc2 Qd8 24. Bf4
Qd7 25. Kg2 b5 (25... h5 $15 26. g5 Nh7) 26. axb5 axb5 27. Ra1 bxc4 28. bxc4 h5
29. g5 {[%cal Rg5f6]} Nh7 30. Ra6 $1 $36 {[%mdl 2048] White fights for an
advantage.} h4 $1 {[%cal Rh4g3]} 31. Nge4 Qf5 32. Nf6+ $1 Nxf6 33. Qxf5 gxf5
34. gxf6 Bxf6 35. Rxd6 Bg7 (35... Nd3 $14 36. Rxf6 Nxf4+ 37. Kh2 Re2 38. Rxf5
Nd3) 36. Bxe5 $16 Rxe5 (36... Bxe5 $16 37. Rc6 Rc7) 37. Rc6 $1 $18 Bf8 (37...
Re2 {is a better defense.}) 38. Rd1 Re2 39. d6 {Threatens to win with d7.} Rd8
40. Nf3 Re6 (40... Re4 $16 {was worth a try.}) 41. Nxh4 Rf6 (41... Rdxd6 $142
42. Rcxd6 Bxd6 43. Nxf5 Bf8) 42. Rxc5 Rfxd6 43. Rxd6 Rxd6 44. Rxf5 {[%mdl 4096]
Endgame KRB-KRN} Rd2 45. Nf3 Rc2 46. Ne5 Bg7 (46... f6 $142) 47. Nxf7 Rxc4 48.
Ng5 Bh6 49. Nf3 Rc2 50. Ne5 Bg7 51. Ng4 Kh7 52. h4 Bd4 (52... Rc3 {might work
better.} 53. h5 Kh8) 53. h5 Rc7 54. Kg3 Bg7 55. Kh4 Rc6 $2 (55... Bc3 56. Kg3
Be1) 56. f4 Rc7 57. Rd5 Rf7 58. f5 Bh8 59. h6 Bb2 60. Kg5 Bc1+ 61. Kh5 Bb2 62.
f6 Bc3 63. Rf5 (63. Kg5 $142 Ra7 64. Ne5 Bb2 65. Nd7 Bc1+ 66. Kh5 Bxh6 {[#]}
67. Re5 $1 Bf8 68. Nxf8+ Kg8 69. Re7 $1) 63... Bb2 64. Rf1 Bc3 65. Rf2 Bd4 66.
Re2 (66. Rf4 $142 Bb2 67. Rb4 Bc1 68. Ne5 Ra7 69. Rb8 Bxh6 70. Re8 Ra2 71. Re7+
Kg8 72. Kxh6) 66... Bc5 67. Re6 (67. Rd2 $142 Bf8 68. Kg5) 67... Bf8 68. Kg5 (
68. Ne5 $142 Ra7 69. Nf3 Kh8 70. Ng5 Ra2 71. Re8 Rh2+ 72. Kg4 Rg2+ 73. Kf5)
68... Rb7 69. f7 Rxf7 70. Nf6+ {White mates.} Rxf6 71. Kxf6 ({Inferior is} 71.
Rxf6 Be7 $11) 71... Bxh6 72. Kf7 Bf4 73. Re4 Bg5 74. Re1 {Weighted Error Value:
White=0.14/Black=0.46} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "12.3"]
[White "Dominguez Perez, Leinier"]
[Black "Firouzja, Alireza"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2758"]
[BlackElo "2759"]
[Annotator "TA"]
[PlyCount "106"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,106,11,18,15,34,20,20,10,25,13,25,15,15,18,12,9,14,13,24,13,12,14,20,
4,14,10,3,11,31,20,26,24,28,0,0,0,0,-27,0,0,16,0,0,0,38,-99,-102,-100,-111,
-104,-103,-105,-76,-81,-9,-29,-30,-22,-37,-48,-26,-20,0,0,0,0,0,-20,0,0,0,-74,
-75,-80,0,0,0,0,22,0,0,-234,-234,-227,-227,-620,-604,-586,-572,-841,-762,
-29987,-29988,-29988,-29989,-29989,-29990]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4.
d3 Bc5 5. c3 d6 6. O-O a6 7. a4 {C54: Giuoco Piano: 4 c3 Nf6, main lines with
5 d4 and 5 d3.} Ba7 8. Re1 O-O 9. h3 {The position is equal.} h6 10. Nbd2 {
[%cal Bb1d2,Bd2f1,Bf1e3,Be3f5][%mdl 32]} Re8 11. b4 {11.b4 is better than 11.
Nf1.} Be6 12. Bxe6 Rxe6 13. Qc2 Qd7 14. Nf1 d5 15. Be3 Bxe3 16. Nxe3 Ne7 17.
Rab1 {[#]} Ng6 $146 ({Predecessor:} 17... Rd8 18. a5 Ng6 19. c4 c6 20. Red1 Nf4
21. Nf5 g6 22. Nxh6+ Kg7 23. Ng4 Nxg4 24. hxg4 {0-1 (43) Esipenko,A (2716)
-Carlsen,M (2847) Krasnaya Polyana 2021}) 18. c4 {[%cal Rc4d5]} d4 19. Nf5 Rae8
20. c5 Ne7 21. Ng3 b5 22. cxb6 cxb6 23. b5 Rc8 24. Qa2 a5 25. Rbc1 Qd8 26. Nf5
Ng6 27. h4 Kh7 28. Rc6 (28. g3 $1 $14 {keeps the upper hand.}) 28... Rcxc6 $17
29. bxc6 Qc7 $1 30. Rc1 Nf4 $1 {[%cal Rf4d3]} 31. Qd2 Re8 32. Rb1 Ne6 (32...
Ng4 $17 33. Rc1 g6) 33. Qb2 $11 Rb8 34. Qb5 Nc5 35. Nd2 g6 36. Ng3 Ne8 {
Threatens to win with ...Nd6.} 37. Nc4 {[%cal Rc4b6]} Nd6 38. Nxd6 Qxd6 39. Nf1
Rc8 40. Qxb6 Rxc6 ({Much weaker is} 40... Qxc6 $6 41. Qxc6 Rxc6 42. Rc1 $16)
41. Qxa5 (41. Qb5 $11 {remains equal.}) 41... Nxd3 $17 42. Qb5 {[#]} Nf4 (42...
Nc1 $1 $17 {And now ...Rc2 would win.} 43. Qb2 Qc7) 43. g3 $11 Ne6 44. Nd2 d3
45. Nc4 Qc7 $36 {[%mdl 2048] White is under pressure.} 46. Ne3 $2 (46. Nd2 $1
$11 {and White has nothing to worry.}) 46... d2 $19 47. Rd1 Rc1 {aiming for ...
Rxd1+.} 48. Kg2 $2 {[#]} (48. Qd5 Rxd1+ 49. Nxd1) 48... Rxd1 $1 {[%mdl 64]
Overworked Piece} 49. Nxd1 Qc2 {[%csl LRd1,LRe4][%mdl 64] Double Attack} 50.
Qe2 {If White can now play Ne3 this consolidates a bit.} Nd4 51. Qg4 h5 {
Black mates.} 52. Qd7 Qxe4+ ({Stronger than} 52... Qxd1 53. Qxf7+ Kh8 54. Qf8+
Kh7 55. Qf7+ Kh8 56. Qf8+ Kh7 57. Qf7+ $11) 53. Kg1 Kg7 {Weighted Error Value:
White=0.48/Black=0.09} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "12.4"]
[White "Mamedyarov, Shakhriyar"]
[Black "Le, Quang Liem"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "2782"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,62,0,0,-6,3,0,16,20,29,0,0,0,0,-93,-90,-56,-88,-120,-124,-127,-118,
-331,-313,-302,-267,-498,-323,-349,-310,-361,-354,-364,-341,-620,-602,-604,
-596,-881,-892,-942,-934,-913,-878,-991,-1004,-987,-993,-984,-953,-943,-913,
-2246,-2129]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 (5. a3 Bxc3+ 6.
Qxc3 O-O 7. Bg5 h6 8. Bxf6 Qxf6 9. Nf3 c6 10. h4 Nd7 11. g4 Qe7 12. g5 h5 13.
e3 g6 14. Be2 dxc4 15. Bxc4 b6 16. Bd3 Bb7 17. Be4 Rac8 18. Qc2 {1-0 (40)
Mamedyarov,S (2764)-Le,Q (2709) chess24.com INT 2020}) 5... exd5 6. Nf3 O-O 7.
Bg5 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0.} h6 8. Bh4 g5 9. Bg3 {
The position is equal.} Ne4 10. Nd2 Bf5 11. Ndxe4 Bxe4 {[#]} 12. Qd2 $146 {[#]}
(12. Qb3 $11 Nc6 13. e3) ({Predecessor:} 12. Qb3 c5 13. a3 Nc6 14. axb4 Nxd4
15. Qd1 Nc2+ 16. Kd2 Nxa1 17. Qxa1 cxb4 18. Nb5 {1-0 (36) Vakhidov,J (2396)
-Dimakiling,O (2447) Bandar Seri Begawan 2012}) 12... c5 $1 $36 {[%cal Rc5d4]
[%mdl 2048] Hoping for ...cxd4. Black is really pushing.} 13. a3 Ba5 {
Threatens to win with ...cxd4.} 14. e3 cxd4 15. exd4 {[#]} Re8 $1 16. O-O-O $2
{Now White is beyond hope.} (16. Be2 $17 {was necessary.}) 16... Nc6 {[%cal
Bb8c6,Bc6a5,Ba5c4][%mdl 32]} 17. f3 Bg6 18. Re1 $2 (18. Bd3 Nxd4 19. Kb1) 18...
Bxc3 19. bxc3 Na5 {aiming for ...Nb3+.} 20. Qb2 Rxe1+ 21. Bxe1 Rc8 {[%cal
Ba8c8,Bc8c6,Bc6e6][%mdl 32]} 22. Qb4 $2 (22. Bg3) 22... Rc6 $19 {Black is
clearly winning.} 23. Bb5 Re6 24. c4 Nxc4 25. Bc3 a5 26. Qb3 Qc7 {White must
now prevent ...Re2.} 27. Bxc4 dxc4 28. Qb5 Rb6 29. Qe8+ Kh7 30. Re1 Qf4+ 31.
Qe3 Qf5 {[%csl Gg6][%cal Rf5c2] Weighted Error Value: White=0.88/Black=0.09}
0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "12.5"]
[White "Artemiev, Vladislav"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "2704"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,83,0,0,-5,8,3,19,0,0,0,0,0,0,-39,-30,-31,0,-12,68,78,77,77,85,0,8,-18,
-14,-13,0,0,0,0,0,0,0,0,0,0,17,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 c5 3. b3 Nc6 4. Bb2 d5 5. cxd5
Nxd5 6. Nc3 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} e5 7.
e3 Nxc3 8. Bxc3 Bd6 9. Qc2 Qe7 10. Bd3 {[#]} h6 $146 ({Predecessor:} 10... Bd7
11. Be4 g6 12. O-O f5 13. Bd5 O-O-O 14. d4 cxd4 15. exd4 e4 16. Ne5 Kb8 17.
Bxc6 Bxc6 18. Nxc6+ bxc6 {1/2-1/2 (42) Kramnik,V (2753)-Gelfand,B (2676) Chess.
com INT 2020}) 11. h4 Bd7 12. h5 Nd4 13. exd4 exd4+ ({Better is} 13... cxd4 $11
14. Bb2 e4 15. Bxe4 Rc8) 14. Kf1 $14 {aiming for Re1.} dxc3 15. Re1 {[%mdl 64]
[#] Zwischenzug} Be6 16. Qxc3 (16. Bb5+ $16 Kf8 17. dxc3) 16... O-O $11 {
The position is equal.} 17. Rh4 Qd7 18. Bc4 Rae8 19. Rhe4 Bxc4+ 20. Qxc4 Rxe4
21. Qxe4 Rd8 22. g4 b5 23. Kg2 Rc8 24. d3 Be7 25. Ne5 Qe6 26. Ng6 Qxe4+ 27.
Rxe4 fxg6 28. Rxe7 gxh5 29. gxh5 {[%mdl 4096] Endgame KR-KR} c4 30. dxc4 bxc4
31. bxc4 ({Don't blunder} 31. Rxa7 $2 c3 $19) 31... Rxc4 32. Rxa7 Rc5 33. a4
Rxh5 34. Rb7 Ra5 35. Rb4 Kf7 36. Kg3 g5 37. Kg4 Kg6 38. Rb6+ Kg7 39. Rb7+ Kg6
40. Rb6+ Kg7 41. Rb7+ Kg6 42. Rb6+ {Weighted Error Value: White=0.07/Black=0.05
} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "12.6"]
[White "Giri, Anish"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2776"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,128,16,26,18,14,13,17,0,6,26,39,44,43,7,4,5,3,4,6,5,5,-52,0,0,5,5,5,
5,5,5,12,5,3,0,14,16,13,20,18,15,13,8,6,5,2,0,0,0,0,0,1,1,1,0,49,49,49,49,49,
49,49,49,93,93,93,89,89,89,89,89,89,89,89,89,133,89,133,133,133,133,133,133,
133,87,87,87,87,87,87,8,136,136,136,136,136,136,226,226,226,8,8,8,8,8,8,8,8,8,
8]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. g3 O-O 6. Bg2 dxc4 7. Ne5 Nc6 8.
Bxc6 bxc6 9. Nxc6 Qe8 10. Nxe7+ Qxe7 11. Qa4 c5 12. dxc5 $1 {The main line 12.
dxc5 scores better than 12.Qxc4. E06: Closed Catalan: Early deviations.} Qxc5
13. Be3 Qc7 14. Rd1 e5 15. f3 {[#]} Be6 $146 ({Predecessor:} 15... Qb7 16. Qxc4
Qxb2 17. Na4 Qb7 18. Nc5 Qc6 19. Rc1 Rb8 20. O-O Rb2 21. Rfd1 Bh3 {1-0 (35)
Delorme,A (2517)-Thejkumar,M (2458) Vandoeuvre 2016}) 16. O-O Qb7 17. Qb5 Qxb5
18. Nxb5 Rab8 19. Nc3 Rxb2 20. Bxa7 Ra8 {...Rc2 is the strong threat.} 21. Be3
(21. Bc5 $11) 21... h5 (21... Rc2 $15 22. Rc1 {[#]} Rxc3 $1 {[%mdl 512]} 23.
Rxc3 Nd5) 22. Rd2 $11 Rxd2 (22... Rbb8 {with more complications.} 23. Rc1 Ra5
24. Rcd1 Ra3 25. Rc1 Ra5) 23. Bxd2 Nd5 24. Ra1 Nxc3 25. Bxc3 {[%mdl 4096]
Endgame KRB-KRB} Ra3 26. Bb2 Ra5 27. Bc3 Ra3 28. Bb4 Ra4 29. a3 f6 30. Kf2 g5
31. Rd1 Kf7 32. Rd6 Ra8 33. Rc6 Rc8 34. Rxc8 Bxc8 {KB-KB} 35. Ke3 g4 36. f4 Ke6
37. a4 c3 38. Bxc3 Bd7 39. a5 Bb5 40. fxe5 fxe5 41. Ke4 Bxe2 42. Bxe5 Kd7 43.
Kf4 Kc6 44. Kg5 Kb7 45. Kxh5 Ka8 46. Bd4 Kb7 47. Bb6 Ka8 48. Kh4 Bd1 49. a6 {
[%cal Ba5a6,Ba6a7][%mdl 32]} Be2 50. a7 Bd1 51. Bf2 Be2 52. h3 gxh3 53. Kxh3
Bd1 54. Kh4 Be2 55. g4 ({Better is} 55. Kg5 $16) 55... Bd3 (55... Bxg4 $11 56.
Kxg4 Kb7) 56. g5 $16 Bc2 57. Kh5 Bd1+ 58. Kh6 Bb3 (58... Bc2 $16 {was worth a
try.}) 59. g6 $18 Bc2 60. Kg5 {[#]} (60. g7 $18 Bb3 61. Kh7) 60... Bxg6 $1 $11
{The position is equal.} 61. Kxg6 Kb7 62. Kf5 Ka8 63. Ke6 Kb7 64. Kd5 Ka8 65.
Kc6 {Weighted Error Value: White=0.17/Black=0.12} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "12.7"]
[White "Liang, Awonder"]
[Black "Carlsen, Magnus"]
[Result "0-1"]
[ECO "B46"]
[WhiteElo "2587"]
[BlackElo "2847"]
[Annotator "TA"]
[PlyCount "78"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,78,29,0,0,0,0,0,0,0,0,0,0,0,0,9,3,13,13,11,8,10,12,14,14,9,8,1,9,6,7,
0,0,0,64,-24,-12,-16,-16,-20,-19,-19,-18,-32,-29,-38,-40,-57,-57,-53,-45,-43,
-39,-44,28,30,91,88,92,0,-1,-499,-444,-426,-465]} 1. e4 c5 2. Nf3 e6 3. d4 cxd4
4. Nxd4 Nc6 5. Nc3 a6 6. Nxc6 bxc6 7. Bd3 d5 8. O-O Nf6 9. e5 Nd7 {B46:
Sicilian: Taimanov: 5 Nc3 a6.} 10. Re1 c5 $5 {[%cal Bc6c5,Bc5c4][%mdl 4]
Exploring less charted territory.} 11. Na4 c4 {The position is equal.} 12. Bf1
{[#]} Bb7 $146 ({Predecessor:} 12... Nc5 13. Nc3 Rb8 14. b3 Qa5 15. Bd2 d4 16.
Ne4 c3 17. Bf4 Nxe4 18. Rxe4 Bc5 {1/2-1/2 (44) Hokkanen,P (2248)-Haapasalo,J 
(2148) Finland 2002}) 13. b3 Bc6 14. Nc3 Bb4 15. Bd2 O-O 16. bxc4 dxc4 17. Ne4
Bxd2 18. Nxd2 c3 19. Nc4 Bb5 20. Qd4 Bxc4 21. Qxc4 Qa5 22. Qd4 Rfd8 23. Re3
Rac8 24. a3 Rc5 (24... Nb6 $11 25. Qh4 h6) 25. Qb4 (25. Rd3 $1 $14) 25... Nxe5
$11 26. Qxa5 Rxa5 27. Rxc3 g5 28. g3 Rd2 29. h3 Kg7 30. Rb1 h5 31. Rb6 g4 32.
hxg4 hxg4 {[#] ...Nf3+ is the strong threat.} 33. Kg2 Nf3 $36 {[%mdl 2048]
Black has the initiative.} 34. Rc4 Nd4 (34... Ne1+ $15 35. Kg1 Rg5) 35. Bd3 e5
(35... Rd5 $11) 36. Rb7 $16 {Threatens to win with Rcc7!} Rb5 {[#]} ({Not} 
36... Rxa3 $2 37. Rcc7 $18) 37. Ra7 (37. Re7 $1 $16 {And now Rcc7! would win.}
Nf3 38. Rxg4+ Kf8 39. Kxf3 (39. Bxb5 Kxe7 40. Bxa6 Ne1+ 41. Kf1 Nxc2 $14) 39...
Kxe7 40. Ke3) 37... Rb6 $1 $11 {[%cal Rb6f6] White must now prevent ...Rf6.}
38. Rxd4 $4 {[%mdl 8192]} exd4 $19 39. Rd7 Rf6 {Weighted Error Value: White=0.
25/Black=0.11} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "12.8"]
[White "Aronian, Levon"]
[Black "Van Foreest, Jorden"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2782"]
[BlackElo "2698"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,81,20,5,12,19,53,69,57,66,58,58,101,85,94,89,97,93,85,87,163,74,64,
50,131,107,74,38,150,150,128,127,126,118,151,172,152,66,233,225,343,291,372,
370,343,340,466,429,493,481,465,432,388,375,656,652,647,634,1172,1172,29967,
29965,29967,-5]} 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. O-O-O Nbd7 11. Kb1 b5 {B90: Sicilian
Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 12. Nd5 {12.Nd5 has
become a bit dusty these days.} Nxd5 13. exd5 Bf5 {White is slightly better.}
14. Na5 Qc7 15. Nc6 Bf6 16. Bd3 Bxd3 {[#]} 17. cxd3 $146 ({Predecessor:} 17.
Qxd3 Rc8 18. h4 Nb8 19. Nxb8 Rxb8 20. Bg5 Qd8 21. f4 Bxg5 22. hxg5 Kf8 23. fxe5
dxe5 24. Qf5 Rb6 25. Rhf1 Qe8 26. d6 Rb8 27. d7 {1-0 (27) Rotstein,A (2528)
-Ries,B (2049) Bad Wiessee 2005}) 17... Nb6 18. Bxb6 Qxb6 19. Rc1 a5 (19... O-O
$16 {might work better.}) 20. Rhe1 (20. g4 $1 $18 {has better winning chances.}
) 20... O-O $16 21. g4 hxg4 (21... b4 $14) 22. fxg4 Bh4 23. Re4 {Strongly
threatening g5.} Rae8 ({Black should try} 23... Qf2 $14 24. Qxf2 Bxf2) 24. g5 (
{Don't play} 24. Nxa5 Bg5 $14) 24... Qf2 {[#]} 25. Qxf2 Bxf2 26. Nxa5 f5 27.
gxf6 $1 Rxf6 28. Nc6 (28. Rb4 $16) 28... Rh6 $2 {A mistake that costs the game.
} ({Black should play} 28... Ref8 $14) 29. d4 $18 Rxh2 (29... Rf8 $142) 30.
dxe5 Bc5 31. b4 Bb6 32. e6 Rd2 33. e7 Bf2 34. Rc2 Rd1+ 35. Kb2 Bg3 36. Rc3 Bh2
(36... Re1 37. Rxe1 (37. Rxg3 Rxe4 38. a4 bxa4 $16) 37... Bxe1) 37. Rh3 Rd2+
38. Kb3 Kf7 {Black hopes to continue with ...Be5.} 39. Rf3+ Kg8 40. Rh4 Be5 41.
Rf8+ $2 {[%mdl 32768] Weighted Error Value: White=0.09/Black=0.74. Loss on
time!?} (41. Nxe5 {mates} dxe5 {[#]} 42. Rh8+ $3 {[%mdl 576] Deflection, Decoy,
Promotion} Kxh8 43. Rf8+ Rxf8 44. exf8=Q+ Kh7 45. Qf5+ {[%mdl 64] Double Attack
} g6 46. Qxe5 Rd3+ 47. Kc2) 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "13.1"]
[White "Van Foreest, Jorden"]
[Black "Duda, Jan-Krzysztof"]
[Result "0-1"]
[ECO "D55"]
[WhiteElo "2698"]
[BlackElo "2738"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,64,10,25,-29,-21,-28,-28,-28,-28,-22,-32,-32,16,9,22,19,52,35,54,13,
13,10,6,-203,-186,-194,-197,-349,-245,-252,-254,-194,-8,-8,-9,-10,-9,-245,-243,
-242,-235,-459,-458,-530,-530,-507,-508,-1177,-1177,-5956,-5939,-29992,-29993]
} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Bg5 Be7 5. e3 h6 6. Bxf6 Bxf6 7. Nc3 {
7.Qc2 is more advanced technology.} O-O 8. h4 {D55: Queen's Gambit Declined: 4
Bg5 Be7: Lines without ...h6 and 6...h6 7 Bxf6.} ({White should try} 8. Rc1)
8... c5 $11 9. g4 cxd4 10. exd4 {Black has an edge.} g6 11. g5 hxg5 12. hxg5
Bg7 {[#]} 13. Qd2 $146 ({Predecessor:} 13. Qc2 Nc6 14. O-O-O Qc7 15. Qd2 a6 16.
Bd3 Nb4 17. Qe3 Nxd3+ 18. Rxd3 dxc4 19. Rdd1 {1-0 (27) Strinitz,H-Winkelmann,H
Germany 1970}) 13... Nc6 14. O-O-O Re8 15. Rh4 a6 16. Kb1 dxc4 17. Bxc4 e5 $1 {
...Bf5+ is the strong threat.} 18. Qc2 (18. Nd5 $11 {and White has nothing to
worry.} Bf5+ 19. Ka1) 18... Bf5 $19 19. Ne4 exd4 {Hoping for ...Nb4.} 20. Ka1
$2 (20. Rf4 Ne5 21. Rxf5 gxf5 22. Nf6+ Bxf6 23. Qxf5) 20... d3 {[%mdl 64] Decoy
} 21. Rxd3 {[#]} Nb4 $1 22. Bxf7+ Kxf7 $2 (22... Kf8 $19 23. Qc5+ Qe7 {[%mdl
64] Double Attack} 24. Bxe8 Nxd3 25. Qxe7+ Kxe7) 23. Qc4+ $11 (23. Qb3+ $2 Be6
$19) 23... Re6 $1 ({Reject} 23... Be6 24. Rxd8 Raxd8 25. Qc7+ Kg8 26. Rh1 $14 (
26. Nf6+ $2 Bxf6 27. Qh7+ Kf8 $19)) 24. Rxd8 Rxd8 25. Rh1 Bxe4 $19 26. Qxb4 Rd3
$40 {[%mdl 128] White is in trouble.} 27. Re1 $2 (27. Qc4 Bxf3 28. Qxd3 Bxh1
29. a4) 27... Bxf3 28. Qf4+ Kg8 29. Qc4 {[#]} Bd5 {[%mdl 512]} 30. Qc8+ (30.
Qc1 $142) 30... Kh7 31. Rb1 Re2 {( -> ...Bxb2+!)} 32. Qc1 Ra3 {[%csl Gd5][%cal
Ra3a2] Weighted Error Value: White=1.23/Black=0.19} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "13.2"]
[White "Carlsen, Magnus"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "D39"]
[WhiteElo "2847"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,111,0,0,0,0,1,0,0,0,14,0,0,0,1,-2,16,7,25,14,14,12,22,14,14,14,15,14,
14,14,14,14,14,14,14,14,14,14,14,14,21,21,21,0,0,0,20,20,25,20,22,21,22,18,20,
19,19,4,21,25,22,8,8,8,8,8,8,8,12,13,12,11,21,11,11,8,11,11,11,11,15,8,8,0,8,8,
8,8,8,8,8,8,8,8,8,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5.
Bg5 dxc4 6. a3 (6. e4 c5 7. e5 cxd4 8. Nxd4 Bxc3+ 9. bxc3 Qa5 10. exf6 Qxg5 11.
fxg7 Qxg7 12. Qd2 O-O 13. Bxc4 Rd8 14. Qe3 Bd7 15. O-O-O Nc6 16. Bb3 Be8 17.
Nxc6 Bxc6 18. h4 Qf6 19. Rh3 b5 {1/2-1/2 (49) Carlsen,M (2875)-Aronian,L (2752)
Zagreb 2019}) 6... Bxc3+ 7. bxc3 c5 {D39: Queen's Gambit Declined: Ragozin
Defence with 5 Bg5 dxc4.} 8. e3 cxd4 9. Bxf6 Qxf6 10. cxd4 {[#]} O-O $146 ({
Predecessor:} 10... b5 11. Qb1 a6 12. a4 Bb7 13. Be2 Qg6 14. O-O Qxb1 15. Rfxb1
Be4 {1/2-1/2 (15) Gunkel,W (2349)-Jørgensen,B (2343) ICCF email 2017}) 11. Bxc4
b6 12. O-O Bb7 13. Qe2 Nd7 14. a4 {[%cal Ba3a4,Ba4a5][%mdl 32]} Rfd8 15. Ba6
Bxa6 16. Qxa6 e5 17. a5 exd4 $1 18. Nxd4 Nc5 19. Qb5 Rac8 20. axb6 axb6 21.
Rab1 Rd6 22. Rfc1 Rcd8 23. h3 h5 24. Qe2 g6 25. Qf3 Kg7 26. Qxf6+ Rxf6 27. Rb5
Ra8 28. Rcb1 Ne4 29. R5b2 ({Of course not} 29. Rxb6 Rxf2 30. Rf1 Rxf1+ 31. Kxf1
Ra2 $17) 29... Ra3 30. g3 Ra5 31. Kg2 Rc5 32. g4 hxg4 33. hxg4 Nc3 34. Ra1 Ra5
35. Rc1 Rc5 36. f4 {The position is equal.} Nd5 37. Re1 Nxf4+ 38. exf4 Rxf4 39.
Rb4 {[#] Black must now prevent Ne6+!} Rxg4+ 40. Kf3 Rgg5 41. Rxb6 Rge5 42.
Rxe5 (42. Rg1 {seems wilder.} Ra5 43. Rd1 Ra3+ 44. Nb3 Ra2 45. Rd7) 42... Rxe5
$11 {[%mdl 4096] Endgame KRN-KR} 43. Rb7 Kf6 44. Nc6 Re6 45. Nd8 Re7 46. Rxe7 (
46. Rb6+ {looks sharper.} Kg5 47. Ra6 Kh5 48. Nc6 Re6 49. Ra5+) 46... Kxe7 {
KN-KPP} 47. Nb7 Kf8 48. Kf4 Kg7 49. Ke5 Kh6 50. Kf6 g5 (50... Kh7 {with more
complications.} 51. Nc5 Kg8 52. Nd7 Kh8 53. Kxf7 g5) 51. Nd6 g4 52. Nf5+ Kh5
53. Ng3+ Kh4 54. Ne4 g3 55. Nxg3 Kxg3 56. Kxf7 {A rather calm draw.  Weighted
Error Value: White=0.03/Black=0.03} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "13.3"]
[White "So, Wesley"]
[Black "Liang, Awonder"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "2772"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "103"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,103,30,26,1,62,66,67,62,59,60,58,59,78,67,106,95,94,57,53,44,107,117,
147,151,202,197,221,211,197,195,291,220,363,366,437,198,875,860,793,703,637,
356,370,375,375,369,351,370,350,352,342,216,345,342,392,400,371,394,392,376,
382,383,486,484,440,261,305,301,351,342,12833,12833,12836,12835,6403,1566,
12838,12833,12835,1389,1481,1347,12845,12846,12845,12845,29989,29990,29990,
29991]} 1. c4 c6 2. Nf3 d5 3. d4 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6
8. Qb3 Qc7 9. cxd5 {D12: Slav Defence: 3 Nf3 Nf6 4 e3 Bf5.} (9. Bd2 {is
interesting.} Be7 10. g3 Bh5 11. Be2 dxc4 12. Qxc4 O-O 13. O-O) 9... Nxd5 {[#]}
(9... cxd5 $11 10. Bd2 (10. Nxg6 hxg6 11. Bd2 Nc6 $11) 10... Nc6) 10. e4 $146 (
{Predecessor:} 10. g3 Be7 11. Nxg6 hxg6 12. Kf2 Nd7 13. e4 N5f6 14. Kg2 O-O 15.
Be2 c5 16. Bf4 Qa5 {1-0 (51) Praggnanandhaa,R (2608)-Mendonca,L (2549) chess24.
com INT 2021}) 10... Nxc3 11. bxc3 {White is slightly better.} Be7 12. Nxg6
hxg6 13. g3 Nd7 14. Kf2 e5 15. Be3 c5 16. dxe5 Nxe5 17. Qb5+ Nc6 {Black is on
the road to losing.} (17... Kf8 $14) 18. Rb1 $16 (18. Bxc5 $2 Rh5 $19) 18...
O-O-O 19. Bc4 Bd6 (19... Ne5 $16 {might work better.}) 20. Kg2 $1 $18 (20. Bxc5
Ne5 $15) 20... Rh5 21. Bd5 a6 22. Qa4 f5 (22... Na5 $142 23. f4 b5) 23. f4 Na5
(23... fxe4 $142 24. Bxe4 Na5) 24. e5 Be7 {[#]} 25. Bf3 (25. Bxb7+ $142 $1 {
[%mdl 512]} Nxb7 26. Qxa6) 25... Rhh8 $2 {[#]} (25... b5 26. Qc2 Rhh8) 26. Rxb7
$3 {[%mdl 576] Remove Defender} Nxb7 27. Qxa6 Rd7 28. e6 {aiming for Rb1.} Rd6
29. Qa8+ Qb8 30. Bxb7+ Kc7 31. Qa5+ {[%mdl 64] Double Attack} Rb6 32. Bd5 {
Black must now prevent Rb1!} Kc8 33. Kf3 (33. Bxc5 Rb2+ 34. Bf2 Qd6 $16) 33...
Rd8 (33... Rb7 {is a better defense.} 34. Qa6 {[%mdl 64] Pin} (34. Bxc5 Bxc5
35. Qxc5+ Rc7 $16) 34... Qa7 35. Bxb7+ (35. Qxb7+ Qxb7 36. Bxb7+ Kxb7 $16)
35... Qxb7+ 36. Qxb7+ Kxb7) 34. c4 {[%cal Bc3c4,Bc4d5][%mdl 32]} ({Don't
blunder} 34. Bxc5 $2 Rxd5 35. Qxb6 {[#]} Qa8 $1 $19) 34... Rxd5 35. cxd5 Qb7
36. Rd1 Rxe6 {If only Black now had time for ...Ra6....} 37. Bxc5 Ra6 38. Qc3 {
[%csl LRe7,LRg7] Hoping for Bxe7+.} Bxc5 39. Qxc5+ {[%mdl 4096] Endgame KQR-KQR
} Kd7 40. Qc3 (40. Re1 $142 {White wants to mate with Re7+.} Rd6 41. Re5) 40...
Kd8 41. Qc4 Qa7 42. Rc1 {Threatening mate with Qc8+.} Ra3+ $2 (42... Qb7 43.
Kg2 Rd6) 43. Kg2 Qb7 44. Kh3 g5 45. fxg5 g6 46. Qh4 Qg7 47. Qh6 Qg8 48. Rc6 f4
49. Rxg6 Qe8 50. Re6 Qd7 51. Qf8+ Kc7 52. Qxa3 {Weighted Error Value: White=0.
37/Black=0.36} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "13.4"]
[White "Vidit, Santosh Gujrathi"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "2726"]
[BlackElo "2776"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,81,0,0,0,0,0,13,6,7,9,11,6,30,0,0,0,12,10,10,13,20,0,18,20,138,0,0,0,
13,0,0,0,0,0,0,0,0,-2,-2,-6,0,0,0,0,0,0,0,-9,-9,-12,-9,-14,-14,-14,0,0,0,0,0,0,
0,-3,0,-4]} 1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. e3 e6 5. d4 d5 6. cxd5 exd5 7.
Bb5 cxd4 8. exd4 Bd6 9. O-O O-O 10. h3 h6 11. Re1 {D32: Tarrasch Defence:
Sidelines and lines without g3.} Bf5 12. Ne5 Rc8 13. Bf4 Re8 {[#]} 14. Rc1 $146
({Predecessor:} 14. Qa4 Re6 15. Bxc6 bxc6 16. Qxa7 Qe8 17. Bg3 c5 18. Nf3 Bxg3
19. fxg3 Be4 20. Re3 {0-1 (35) Weiss,L (2043)-Losonsky,M (1996) ICCF email 2013
}) 14... Re6 15. Qd2 (15. Ba4 {keeps more tension.} Bc7 16. Nxc6 bxc6 17. Bxc7
Qxc7 18. Rxe6 Bxe6 19. Qd2) 15... Qe7 (15... Bh7 {is interesting.} 16. Bg3 Nh5
17. Nxc6 Rxe1+ 18. Rxe1 bxc6 19. Bxd6 Qxd6 20. Be2 Nf6) 16. Nxc6 bxc6 17. Bxd6
Qxd6 18. Rxe6 Qxe6 19. Bf1 Re8 20. Qf4 Qd7 21. Na4 {Threatens to win with Nc5.}
Re4 {[#]} (21... g5 $11 22. Qf3 Ne4) 22. Qb8+ (22. Qf3 $1 $16) 22... Re8 $11 {
The position is equal.} 23. Qb4 Ne4 24. Nc5 Qd6 25. Re1 (25. Nd3 {feels hotter.
} Qc7 26. Qa4 Re6 27. Ne5 Qb6 28. g4) 25... Rb8 26. Qa3 Nxc5 27. dxc5 Qd7 28.
Rd1 d4 29. b4 Rd8 30. Bd3 Bxd3 31. Qxd3 {[%mdl 4096] Endgame KQR-KQR} Qd5 32.
a3 a5 33. Kf1 axb4 34. axb4 g6 35. Kg1 Kg7 36. Rd2 h5 37. h4 Qe5 38. Rd1 Qd5
39. Rd2 Qe5 40. Rd1 Qd5 41. Rd2 {Weighted Error Value: White=0.08/Black=0.11}
1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "13.5"]
[White "Le, Quang Liem"]
[Black "Artemiev, Vladislav"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2709"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "124"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,124,42,57,51,70,50,52,34,35,39,36,39,51,38,40,43,45,39,75,67,72,64,76,
-13,-6,-11,-10,-5,-9,-9,-7,-4,-6,-8,-5,-8,-8,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,-6,0,0,0,-8,-13,-14,-8,-16,0,-9,-2,-4,-4,-27,-8,-16,-8,-59,-63,-81,-80,
-31,-14,-14,-14,-14,-14,-14,-14,-14,-14,-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 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 c6 6.
h3 {B01: Scandinavian Defence.} g6 7. Bc4 Be6 8. Bb3 {White is slightly better.
} (8. Bd3 {keeps more tension.} Bg7 9. O-O O-O 10. Re1 Nbd7 11. b3) 8... Bg7 9.
O-O Bxb3 10. axb3 Nbd7 11. Re1 e6 12. Bg5 O-O {[#]} 13. Qd2 $146 ({Predecessor:
} 13. Qe2 a6 14. Rad1 h6 15. Bh4 Nh5 16. Ne4 Qb4 17. Nfd2 f5 18. c3 Qb5 19. Nd6
Qxe2 20. Rxe2 {1/2-1/2 (58) Zvjaginsev,V (2617)-Zabotin,A (2486) Sochi 2020})
13... c5 14. Bf4 Qc6 15. Rad1 Rfd8 16. d5 (16. dxc5 $16 Qxc5 17. Re3) 16...
exd5 17. Nxd5 Qxd5 18. Qxd5 Nxd5 19. Rxd5 {[#] And now Bc7 would win.} Nf8 $1
20. Rxd8 Rxd8 21. c3 Ne6 22. Be3 b6 23. Kf1 f5 24. Ng5 Nxg5 (24... Nc7 {
looks sharper.} 25. h4 h6 26. Nf3 Nd5 27. Bd2 Kf7) 25. Bxg5 $11 {[%mdl 4096]
Endgame KRB-KRB} Rd7 26. Re8+ Kf7 27. Ra8 Bf6 28. Be3 Ke6 29. Ke2 Kd5 30. g4
fxg4 31. hxg4 Bd8 32. Rc8 h5 33. Kf3 hxg4+ 34. Kxg4 Ke4 35. b4 cxb4 36. cxb4
Bf6 37. b3 Kd3 38. Rc1 $1 {[%cal Rc1d1] aiming for Rd1+.} Re7 39. Rc6 Bc3 40.
Rxg6 (40. Kg5 {is more complex.} Bxb4 41. Kxg6 Bc3 42. Bg5 Rg7+ 43. Kh5) 40...
Kc2 41. b5 Kxb3 42. Bf4 (42. Bg5 $11 Rd7 43. f4) 42... Ka4 $15 43. Rg5 {[#]}
Bd4 $1 44. Bg3 Bc5 45. f4 $1 {The position is equal.} Kxb5 46. f5 $1 Rf7 47.
Be5 $1 a5 48. f6 a4 49. Kf5 Rf8 50. Ke6 Re8+ 51. Kd7 Ra8 52. f7 Kc4 53. Rg8 Bf8
54. Bg7 Ra7+ 55. Ke6 Bxg7 56. Rxg7 Rxf7 $1 57. Rxf7 $11 {KR-KPP} a3 58. Ra7 Kb3
59. Kd5 a2 60. Kc6 Kb2 61. Kxb6 a1=Q 62. Rxa1 Kxa1 {Weighted Error Value:
White=0.07/Black=0.04} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "13.6"]
[White "Firouzja, Alireza"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2759"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,81,12,12,12,7,10,16,28,25,22,14,19,16,12,12,21,20,29,20,33,12,18,10,
11,2,10,8,16,16,16,10,26,0,10,15,10,12,12,12,10,12,13,10,8,7,8,0,3,0,0,0,8,0,0,
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 Nxe5 7. Rxe5+ Be7 8. Bf1 O-O 9. d4 Bf6 10. Re1 Re8 {C67: Ruy Lopez:
Berlin Defence: 4 0-0 Nxe4.} 11. c3 Rxe1 12. Qxe1 Nf5 13. Bf4 c6 14. Nd2 {
[%cal Bb1d2,Bd2f3,Bf3e5][%mdl 32]} d5 15. h3 g6 16. Nf3 Ng7 17. Qd2 Bf5 {[#]}
18. Re1 $146 ({Predecessor:} 18. Bh2 h5 19. Ne5 Bg5 20. Qd1 h4 21. Nf3 Bf6 22.
a4 Qe7 23. Qd2 Re8 24. a5 {1/2-1/2 (33) Roberts,A (2279)-Axmann,S (2361) ICCF
email 2018}) 18... Qf8 19. Ne5 Re8 20. g4 Bc8 21. Bh6 Qd6 22. Qf4 Qd8 23. Bd3
Ne6 24. Qf3 Qe7 25. Re3 Bg7 {The position is equal.} 26. Bxg7 Kxg7 27. Qg3 f6
28. Nf3 Qc7 29. Qxc7+ Nxc7 30. Rxe8 Nxe8 $11 {[%mdl 4096] Endgame KBN-KBN} 31.
Kg2 Nd6 32. Nd2 g5 33. Kg3 f5 34. f4 h6 35. Nf1 Kf6 36. Ne3 a5 37. a3 Be6 38.
Bc2 Bc8 39. Bd3 Be6 40. Bc2 Bc8 41. Bd3 {Not much happened in this game. 
Weighted Error Value: White=0.03/Black=0.02} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "13.7"]
[White "Naroditsky, Daniel"]
[Black "Dominguez Perez, Leinier"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2623"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "122"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,122,25,22,16,7,23,11,43,35,31,14,67,18,43,-13,64,8,74,31,24,-46,-41,
-33,-27,-45,-40,-42,-16,-25,-41,-60,0,0,0,-39,-35,-67,-65,-135,-147,-147,-133,
-239,-244,-249,-245,-241,-226,-328,-348,-350,-321,-254,-175,-167,-177,-326,0,
-61,0,-318,-320,-736,-736,-698,-595,-783,-587,-604,-575,-1218,-388,-757,-464,
-464,-666,-672,-665,-625,-641,-634,-580,-568,-602,-469,-67,-920,-779,-2609,
-2429,-1921,-881,-6629,-5708,-29976,-29977,-29977,-29978,-29978,-29979,-29979,
-29980,-29980,-29980,-29980,-29980,-29981,-29980,-29986,-29982,-29981,-29982,
-29984,-29985]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Nb3 g6 {
B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 7. Be3
Bg7 8. Qd2 h5 {[#] The position is equal.} 9. O-O-O $146 ({Predecessor:} 9. f3
Nc6 10. Nd4 Nxd4 11. Bxd4 Be6 12. O-O-O b5 13. a3 Qb8 14. Kb1 b4 15. axb4 Qxb4
{0-1 (39) Sharapova,L (1473)-Saveleva,A (1619) Armavir 2015}) 9... Nbd7 {
[%cal Bb8d7,Bd7b6,Bb6a4][%mdl 32]} 10. f4 Qc7 (10... b5 $11) 11. Be2 b5 12. Bf3
(12. Kb1 $14) 12... Bb7 (12... b4 $11 13. Nd5 Nxd5 14. exd5 a5) 13. Kb1 (13.
Nd5 $14 Nxd5 14. exd5) 13... O-O (13... Ng4 $1 $11) 14. h3 Nb6 15. Qf2 (15.
Bxb6 $11 Qxb6 16. e5 dxe5 17. fxe5) 15... Na4 16. Bd4 e5 $1 {[%cal Re5d4]} 17.
fxe5 dxe5 18. Nxa4 bxa4 19. Bb6 Qc8 20. Nc5 Bc6 (20... Qc6 $1 $15 21. Nxb7 Qxb7
) 21. Ba5 $11 Rb8 22. Bc3 Nd7 23. Nxd7 Bxd7 24. Qe3 ({White should play} 24.
Rd3 $1 $15) 24... Be6 $1 $17 {Strongly threatening ...Qc4.} 25. Be2 {[#]} Bh6
$1 {[%cal Rh6e3][%mdl 512]} 26. Qf3 (26. Qxh6 $17 {was called for.} Qxc3 27.
Qc1) 26... Qc5 $1 $19 27. Ka1 a3 $1 {[%cal Ra3b2]} 28. b3 Rbc8 29. Rd3 (29. Bc4
$142) 29... Rfd8 30. Rhd1 Rxd3 31. Rxd3 Bc1 {Threatens to win with ...Bb2+!}
32. Bd1 {[#]} Bc4 $1 {[%cal Rc4d3][%mdl 512]} 33. Rd7 {[#]} (33. bxc4 $142 Qb6
34. Bd4 (34. c5 $2 Qb5 $19) 34... exd4 35. Rb3) 33... Be6 $2 $40 {[%mdl 128]
Black attacks.} ({Better is} 33... Qc6 $1 $19 {[%cal Rc6d7]} 34. Kb1 Bf4) 34.
Rd3 $15 Bc4 $2 {[%mdl 8192]} 35. Rd7 $1 $19 {[#]} (35. bxc4 Qb6 $17) 35... Qc6
{[%cal Rc6d7]} 36. Ra7 (36. Kb1 Qxd7 37. Kxc1) 36... Be6 37. Kb1 Bf4 (37...
Qxc3 38. Qxc3 Rxc3 39. Kxc1 $11) 38. Be1 Rd8 {...Qd6 is the strong threat.} 39.
Be2 Qc5 ({Not} 39... Rc8 40. Bd3 $14) 40. Bf2 Qb4 (40... Qa5 {( -> ...Qd2)} 41.
Bg3 Qd2 42. Bxf4 exf4) 41. g3 $2 {[#]} (41. c3 Qb8 42. Rxa6 Bxb3 43. Rb6) 41...
Bg4 $1 {[%mdl 512]} 42. hxg4 hxg4 43. c3 gxf3 44. cxb4 fxe2 45. gxf4 {[%mdl
4096] Endgame KRB-KR} Rd1+ 46. Kc2 exf4 47. Rxa6 {[#] Threatening b5.} Rf1 $2 (
{Black should try} 47... f3 $1 $19 {White must now prevent ...Kg7.} 48. b5 (48.
Rxa3 $2 e1=Q $19) 48... Rf1) 48. Bh4 $2 {[%mdl 8192] [#] This move loses the
game for White.} (48. Be1 $15 Rxe1 49. Kd2) 48... g5 $1 {[%cal Rg5h4]} 49. Kd2
gxh4 50. Kxe2 {KR-KR} Ra1 51. b5 h3 52. b6 h2 {Black mates.} 53. b7 h1=Q 54.
b8=Q+ {KQR-KQR} Kh7 55. Qxf4 Qd1+ 56. Ke3 Qc1+ 57. Kf3 Qf1+ {[%mdl 64] Double
Attack} 58. Kg4 Qe2+ {[%mdl 64] Double Attack} 59. Kf5 Rf1 60. Rh6+ Kg7 61. Rh4
Rxf4+ {Weighted Error Value: White=0.79/Black=0.36} 0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "13.8"]
[White "Hansen, Eric"]
[Black "Vachier-Lagrave, Maxime"]
[Result "0-1"]
[ECO "C13"]
[WhiteElo "2606"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "134"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,134,10,15,20,13,18,14,8,8,13,0,13,15,33,28,35,32,25,-48,-65,-74,-61,
-42,10,10,10,18,13,0,0,-37,0,-8,-8,-9,0,0,0,-70,0,-8,-10,-10,-1,-2,-2,-14,-2,
-12,0,0,0,0,0,0,-4,-11,0,-14,-7,-7,-7,-7,-7,-7,-7,-7,0,0,0,0,0,0,0,-8,-8,-8,-8,
-8,0,-8,0,0,0,0,0,-3,-3,-3,-3,-3,0,0,0,0,0,0,0,-82,0,0,0,0,0,0,0,-8,-8,-82,-82,
-82,-82,-81,-81,-564,-68,-786,-786,-883,-868,-4562,-2712]} 1. e4 e6 2. d4 d5 3.
Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6 gxf6 7. Nf3 f5 8. Nc3 a6 {C13: French:
Classical System: 4 Bg5 Be7, Alekhine-Chatard Attack.} 9. g3 b5 10. Bg2 Bb7 {
The position is equal.} 11. O-O O-O 12. Ne5 Bxg2 13. Kxg2 c5 14. Qf3 {[#]} cxd4
$146 ({Predecessor:} 14... Ra7 15. d5 b4 16. Ne2 Qxd5 17. Qxd5 exd5 18. Rad1
Rd8 19. Nf4 d4 20. Rfe1 Rc7 {1-0 (64) Groszpeter,A (2437)-Horvath,D (2375)
Hungary 2019}) 15. Qxa8 {[#] Hoping for Ne2.} dxc3 16. Qb7 (16. b3 $11) 16...
Bf6 $15 17. Nd3 cxb2 18. Rab1 Qc8 (18... Qa5 $15) 19. Qxc8 $11 Rxc8 20. Nxb2
Nd7 21. Nd3 Nb6 22. Nb4 a5 23. Nd3 b4 24. a3 $1 bxa3 25. Rxb6 {Threatens to
win with Rb5.} a2 26. Ra6 (26. Rb5 $11 a1=Q 27. Rxa1 Bxa1 28. Rxa5) 26... a1=Q
({Black should play} 26... Bc3 $1 $15) 27. Rxa1 Bxa1 28. Rxa5 {[%mdl 4096]
Endgame KRB-KRN} Bd4 29. Ra4 Bc3 30. h3 Kg7 31. g4 fxg4 32. hxg4 Kf6 33. Kf3
Rc7 34. Re4 Kg5 35. Kg3 Kf6 36. Re2 Ba5 37. f4 Rc3 38. Kf3 Bc7 39. Rh2 Kg6 40.
g5 e5 41. Rh6+ Kg7 42. f5 Rxc2 43. f6+ Kg8 44. Rh1 Rc4 {Strongly threatening ..
.e4+.} 45. Re1 h6 46. Nxe5 Rc3+ 47. Kg4 hxg5 48. Nd7 Rd3 (48... Kh7 {feels
hotter.} 49. Kxg5 Rg3+ 50. Kf5 Rf3+ 51. Kg4 Rg3+) 49. Re8+ Kh7 50. Nf8+ (50.
Re7 {seems wilder.} Kg8 51. Nc5 Rd4+ 52. Kh5 Bd6 53. Re8+) 50... Kh6 {And now .
..Rd4+ would win.} 51. Re7 Rd4+ 52. Kf3 g4+ (52... Rf4+ {keeps more tension.}
53. Kg2 Bd6 54. Rxf7 Bxf8 55. Rxf8 Kg6) 53. Ke2 Bd6 54. Rxf7 Re4+ 55. Kd3 Re8
56. Rh7+ Kg5 57. Nd7 Kf4 58. Kd4 g3 59. Kd5 $1 {[%cal Rd5d6]} Ba3 60. Rg7 (60.
Rh4+ {is more complex.} Kg5 61. Rh7 Re3 62. Rg7+ Kf5 63. Kc4) 60... Ra8 61. Nb6
(61. f7 $11 {remains equal.}) 61... Ra5+ $17 62. Kc4 Rf5 63. Nd5+ Kf3 {...Bc1
is the strong threat.} 64. Rg6 $2 {[%mdl 8192]} (64. Ne3 $17 {is more
resistant.} Rxf6 65. Nf1) 64... Bd6 $2 ({Better is} 64... Bb2 $19 65. Ne3 Rxf6)
65. Ne7 $2 {[%mdl 8192] [#]} (65. f7 $15) 65... Rc5+ $1 $19 {Black is clearly
winning.} 66. Kd4 g2 67. Nd5 Rc1 {Weighted Error Value: White=0.08/Black=0.07}
0-1

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "14.1"]
[White "Duda, Jan-Krzysztof"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1-0"]
[ECO "D78"]
[WhiteElo "2738"]
[BlackElo "2751"]
[Annotator "TA"]
[PlyCount "41"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,41,22,12,38,0,0,0,0,-5,2,-8,-12,0,59,60,88,89,180,145,432,434,431,
393,411,406,576,581,755,754]} 1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. Nf3 Bg7
6. b3 O-O 7. Bb2 a5 8. O-O b5 {D78: Fianchetto Grünfeld: 6 0-0 c6.} 9. cxb5
cxb5 10. Nc3 {[%cal Bb1c3,Bc3d5,Bd5e3,Be3c2][%mdl 32]} Ba6 {The position is
equal.} 11. Ne5 {[#]} e6 $146 ({Predecessor:} 11... Qd6 12. Re1 b4 13. Na4 Nbd7
14. a3 Bb5 15. axb4 axb4 16. Nxd7 Nxd7 17. Nc5 Rxa1 18. Qxa1 Bxd4 19. Bxd4 Nxc5
{1/2-1/2 (54) Egartner,W (2128)-Fuchs,G (2281) Austria 2004}) 12. Qd2 Nfd7 13.
f4 f6 (13... Nxe5 $11 14. dxe5 (14. fxe5 Nd7 $11) 14... Qb6+ 15. Kh1 Rd8) 14.
Nd3 $14 {Black must now prevent f5!} f5 15. Nxd5 $1 {[#] Strongly threatening
Ne7+!} Nc6 (15... Ra7 $16) 16. Ne3 $36 {[%mdl 2048] White is on the roll.} Nxd4
{[%mdl 8192] Loses the game.} (16... Rc8 $16 17. Rfd1 Ncb8) 17. Bxa8 $18 Qxa8
18. Nf2 Rd8 19. Bxd4 Nc5 (19... Nb8 $142 20. Nc2 (20. Qxa5 Nc6 $18) 20... Nc6)
20. Nc2 Ne4 21. Qe3 {Weighted Error Value: White=0.08/Black=0.56} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "14.2"]
[White "Dominguez Perez, Leinier"]
[Black "Hansen, Eric"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2758"]
[BlackElo "2606"]
[Annotator "TA"]
[PlyCount "91"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,91,16,7,11,18,21,10,30,17,16,9,29,0,0,0,8,6,41,32,65,70,72,69,79,69,
66,67,72,66,62,62,110,131,291,281,422,214,303,300,289,289,295,301,295,293,291,
279,250,104,183,186,178,26,619,619,590,601,490,302,305,197,190,185,198,194,193,
179,213,208,198,190,218,210,207,202,250,231,645,638,737,726]} 1. e4 e5 2. Nf3
Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. Re1 a6 {C54: Giuoco Piano: 4
c3 Nf6, main lines with 5 d4 and 5 d3.} 8. a4 {is cutting edge theory.} Ne7 9.
d4 Ba7 {The position is equal.} 10. h3 Ng6 11. Bd3 Re8 12. Nbd2 {[%cal Bb1d2,
Bd2f1,Bf1g3,Bg3h5][%mdl 32] [#]} Nh5 $146 ({Predecessor:} 12... Be6 13. Nf1 Nh5
14. Ng3 Nxg3 15. fxg3 exd4 16. cxd4 c5 17. Be3 cxd4 18. Nxd4 Qf6 19. Nxe6 Bxe3+
20. Rxe3 Qxe6 {1/2-1/2 (30) Bosnjak,P (2265)-Rade,M (2390) Mali Losinj 2019})
13. Nf1 Nhf4 14. Bc2 Qf6 15. Ng3 Be6 {[#]} 16. Nh5 $1 Qe7 (16... Nxh5 $2 17.
Bg5 $18) 17. Bxf4 Nxf4 18. Nxf4 exf4 19. Qd2 Qf6 $1 20. e5 $36 {[%mdl 2048]
White has good play.} dxe5 21. Rxe5 h6 22. Rae1 Rad8 $2 (22... c6 $16 {is a
better defense.} 23. Qd3 g6) 23. R1e4 $1 $18 g5 {[#]} (23... Qe7 $142 24. Bb3 (
24. Qxf4 c6 $14) (24. Rxf4 Rd5 $18) 24... c6 25. Bxe6 (25. Qxf4 Bb8 $14) 25...
fxe6) 24. Bb3 $1 {[%mdl 512]} Bd7 (24... c6 $142) 25. h4 {[%cal Rh4g5]} Rxe5
26. Nxe5 Be6 27. hxg5 hxg5 28. Bxe6 Qxe6 29. Qe2 Qf5 {[#]} 30. Nd3 (30. Qh5 $1
$18 {[%mdl 512] is the precise move to win.}) 30... Kg7 (30... Kf8 $16) 31. Re5
Qg6 32. Qg4 $2 f6 $2 {[%mdl 8192]} (32... Qxd3 $11 33. Rxg5+ (33. Qxg5+ Qg6 $11
) 33... Kf8) 33. Re7+ {[%mdl 64] Double Attack} Kf8 34. Rxc7 Bb8 35. Rc8 Ke7
36. Qe2+ Kd7 {[#]} 37. Rxd8+ Kxd8 38. f3 Bd6 39. Kf1 Qh7 40. Ke1 Qd7 41. b3 Qc6
42. Kd2 Qd5 43. Kc2 f5 44. Ne5 b5 $2 (44... Bc7 45. Qd3 Qe6) 45. c4 bxc4 46.
Qxc4 {Weighted Error Value: White=0.26/Black=0.44} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "14.3"]
[White "Mamedyarov, Shakhriyar"]
[Black "Naroditsky, Daniel"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2782"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "97"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,97,26,26,38,0,6,0,0,-9,10,0,39,33,36,25,25,17,24,21,24,22,38,23,26,
15,35,5,59,57,38,60,52,43,64,44,52,51,111,110,110,59,67,54,94,61,75,67,77,77,
73,54,76,69,74,78,77,74,83,83,81,57,56,59,74,84,228,238,218,200,252,241,277,
250,510,509,497,487,29972,29973,29982,29983]} 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 c6 9. a4 a5 10. h3 Re8 {B07:
Pirc Defence: Miscellaneous Systems.} 11. dxe5 dxe5 12. Be3 Qc7 {[#] The
position is equal.} 13. Qe2 $146 ({Predecessor:} 13. Nd2 b6 14. Nc4 Ba6 15. Bf1
Bf8 16. Qf3 Kg7 17. Rad1 Bc5 18. Rd2 Bxc4 19. Bxc4 Bxe3 20. Qxe3 {1/2-1/2 (49)
Sredojevic,I (2387)-Rahul,S (2317) Backi Petrovac 2018}) 13... Nb6 14. Rad1
Nfd7 15. b3 Bf8 16. Nd2 Bc5 17. Na2 {[%cal Bc3a2,Ba2c1,Bc1d3][%mdl 32]} Bxe3
18. Qxe3 Qd6 19. Nc1 Qc5 20. Nd3 Qxe3 21. Rxe3 Nf8 22. f4 f6 (22... exf4 $11
23. gxf4 (23. Nxf4 Ne6 $11) 23... Ne6) 23. fxe5 $14 fxe5 24. Nf3 Nbd7 25. h4 b5
26. Ra1 Bb7 27. Bh3 bxa4 (27... Re7 $14) 28. Rxa4 $16 c5 29. Ra1 ({White
should play} 29. Rc4 $16) 29... Bc6 $14 30. Nb2 Nb6 31. Rc3 Bxe4 {[#] Hoping
for ...Nd5.} 32. Nd2 Bf5 33. Bxf5 gxf5 34. Rxc5 Rec8 35. Rxc8 Rxc8 36. Ndc4
Nxc4 37. Nxc4 $16 {[%mdl 4096] Endgame KRN-KRN} Ne6 38. Rxa5 Nd4 39. Ra2 f4 40.
Kf2 fxg3+ 41. Kxg3 e4 {Loses the game.} (41... Kg7 $16 {is a better defense.})
42. Kf4 $18 Re8 43. Nd6 Rd8 44. Nxe4 Rc8 45. Ra7 {Black must now prevent Nf6+.}
h6 $2 (45... Rf8+ 46. Kg5 Rf5+ 47. Kh6 Rf4) 46. Nf6+ Kf8 47. c4 Nxb3 {[#]} (
47... Rd8 $18 48. Rb7 Nc6) 48. Kf5 $1 Rxc4 49. Kg6 {[%csl Gg6][%cal Ra7f7]
Weighted Error Value: White=0.07/Black=0.41} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "14.4"]
[White "Artemiev, Vladislav"]
[Black "Firouzja, Alireza"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "2704"]
[BlackElo "2759"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,111,12,15,5,4,12,6,6,3,3,4,3,5,6,7,18,12,9,15,5,19,23,23,23,19,37,47,
18,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,19,
19,19,17,19,19,19,17,19,19,19,19,19,17,19,19,19,17,19,10,10,10,10,10,10,10,10,
10,10,11,11,10,10,10,10,10,10,0,10,0,10,0]} 1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3
Be7 5. b3 O-O 6. Bb2 c5 7. cxd5 exd5 8. d4 Nc6 9. Be2 Ne4 10. O-O Bf6 11. Rc1 {
D32: Tarrasch Defence: Sidelines and lines without g3.} cxd4 $1 12. Nxe4 dxe4
13. Nxd4 Nxd4 14. Bxd4 Bxd4 15. Qxd4 Qxd4 16. exd4 Rd8 17. Rfd1 Be6 {[#]} 18.
f3 $146 ({Predecessor:} 18. Rc7 Rd7 19. Rxd7 Bxd7 20. f3 exf3 21. Bxf3 Rb8 22.
Rc1 Rc8 23. Rxc8+ Bxc8 24. Kf2 {1/2-1/2 (69) Artemiev,V (2716)-Duda,J (2753)
chess24.com INT 2020}) 18... Bd5 19. Rc7 Rac8 20. Rdc1 Rxc7 21. Rxc7 $11 {
[%mdl 4096] Endgame KRB-KRB} e3 22. Kf1 g6 23. Bd3 Bc6 {The position is equal.}
24. Ke2 Rxd4 25. Kxe3 Rd7 26. Rxd7 Bxd7 {KB-KB} 27. Be4 b6 28. Kd4 Kf8 29. Kd5
Ke7 30. f4 h6 31. Bd3 Be8 32. b4 Bd7 33. a3 {[%cal Ba2a3,Ba3a4,Ba4a5][%mdl 32]}
Be8 34. h4 Bd7 35. Bc2 Bb5 36. g3 Bd7 37. a4 Be8 38. a5 Bb5 39. Be4 Bd7 40. Bd3
Be8 41. Ba6 Bd7 42. Bb7 Ba4 43. Bc8 Bb5 44. Bg4 Ba4 45. h5 gxh5 46. Bxh5 f6 47.
Be2 Be8 48. Bd3 Bd7 49. Bg6 Ba4 50. Bf5 Be8 51. axb6 axb6 52. Bd3 Bd7 53. Bc2
Be8 54. Bd3 Bd7 55. Bc2 Be8 56. Bd3 {Weighted Error Value: White=0.02/Black=0.
01} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "14.5"]
[White "Giri, Anish"]
[Black "Le, Quang Liem"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2776"]
[BlackElo "2709"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,112,14,9,14,21,1,2,12,1,0,0,10,28,0,0,12,6,0,0,0,0,-7,0,0,0,0,0,0,0,0,
0,0,0,0,0,7,25,14,31,38,22,21,90,90,87,97,87,91,87,69,58,14,14,14,14,14,14,14,
14,14,82,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,0,2,2,2,2,2,2,8,8,16,16,31,0,
0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 a6 5. c5 b6 6. cxb6
$1 {D37: Queen's Gambit Declined: 5 Bf4.} c5 7. Bf4 {Hoping for Bc7.} Bd6 8.
Bxd6 Qxd6 9. dxc5 Qxc5 10. Qd4 {[#]} Qd6 $146 ({Predecessor:} 10... Qxd4 11.
Nxd4 e5 12. Nf3 d4 13. Na4 Nbd7 14. g3 Bb7 15. Bg2 Rb8 16. Rc1 O-O {1-0 (46)
Mishra,A (2354)-Sarkar,J (2366) Charlotte 2021}) 11. e3 (11. e4 $5 {[%cal
Re4e5]} Nc6 12. Qd2 $11) 11... O-O 12. Be2 Nbd7 13. O-O e5 14. Qd2 Nxb6 15. b3
Bb7 16. Rfd1 Rfe8 17. Rac1 h6 18. h3 Rad8 19. Qb2 Qe7 20. Na4 Nxa4 21. bxa4 Rd7
22. a5 Qd6 23. Rc2 d4 24. exd4 Bxf3 25. Bxf3 {[#] Strongly threatening Rc6.}
Rb8 (25... e4 $11 26. Be2 Nd5) 26. Qc1 $16 exd4 27. Rc6 Qb4 28. Rxa6 d3 29. Qd2
Qd4 30. Ra8 Rxa8 31. Bxa8 Ne4 32. Bxe4 Qxe4 33. Qe3 Qxe3 34. fxe3 $11 {[%mdl
4096] Endgame KR-KR} Kf8 (34... Ra7 $11 {keeps the balance.}) 35. a3 (35. a4
$16) 35... d2 36. Kf2 Rd5 37. a6 Ke7 38. Ke2 Ra5 39. Ra1 Rxa6 40. Kxd2 Rg6 41.
g4 h5 $1 42. Rg1 Ra6 43. gxh5 {[%mdl 64] [#] Discovered Attack} Rxa3 44. Rxg7 {
next Rg4 is good for White.} Ra5 45. h4 Rxh5 46. Rg4 Ke6 47. Ke2 f6 48. Kf3 Rh8
49. Kg3 Kf7 50. Rf4 Re8 51. e4 Kg6 {The position is equal.} 52. Kg4 Re5 53. h5+
Rxh5 54. Rxf6+ Kxf6 55. Kxh5 Ke5 56. Kg4 Kxe4 {Weighted Error Value: White=0.
07/Black=0.06} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "14.6"]
[White "Liang, Awonder"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1/2-1/2"]
[ECO "A38"]
[WhiteElo "2587"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "317"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,317,-10,-11,0,-2,22,17,22,0,0,0,2,7,0,-25,0,-4,-13,-5,26,32,28,22,18,
22,45,13,32,30,30,27,12,0,94,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-20,-11,-22,-22,-53,
-54,-54,-47,-56,-68,-61,-61,-109,-94,-159,-70,-145,-88,-78,-74,-79,-35,-42,-28,
-58,-32,-32,-33,-37,-32,-53,-53,-227,-227,-227,-227,-220,-220,-220,0,0,0,-44,
-44,-44,-44,-44,-44,-2815,-2709,-2716,-2709,-2702,0,-2695,-924,-917,-899,-884,
-855,-763,-666,-567,0,-640,-44,-44,-44,-44,-44,-44,-44,-44,-44,-44,-44,-216,
-216,-216,-215,-1981,-888,-940,-44,-44,-44,-44,-44,-44,-44,-44,-44,-44,-44,-44,
-44,-1241,-585,-730,-566,-589,-566,-566,-44,-44,0,-44,-44,-44,-44,-44,-44,-44,
-44,-44,-44,-44,-44,-44,-44,-44,-44,-44,0,-44,-44,-44,-44,-44,-44,-44,-44,-44,
-44,-7547,-7546,-7455,-7455,-7151,-6175,-11560,-6111,-11572,-500,-29947,-8185,
-29975,-29976,-29976,-29977,-29977,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 d6 6. b3 Bg7 7. Bb2 e5 8.
O-O O-O 9. Ne1 Be6 10. Nd5 Rb8 {A38: Symmetrical English vs ...g6: 4 Bg2 Bg7 5
Nf3 Nf6.} 11. Nc2 Ne7 {[%cal Rf6d5] [#]} 12. e4 $146 ({Predecessor:} 12. Nxf6+
Bxf6 13. Rc1 b5 14. Ne3 Bg7 15. Ba1 a5 16. Qc2 f5 17. d3 f4 18. Nd5 Bxd5 19.
cxd5 {0-1 (29) Keymer,V (2591)-Martirosyan,H (2632) Chess.com INT 2021}) 12...
b5 {White should prevent ...bxc4.} 13. d3 bxc4 14. dxc4 Nc6 15. f4 Nd4 16. Kh1
Nd7 17. Nce3 exf4 18. gxf4 Qh4 19. Qe1 Qxe1 20. Raxe1 Rfe8 21. Nc7 Rec8 22.
Nxe6 (22. Ned5 {is interesting.} Bxd5 23. Nxd5 Re8 24. Rd1 Nc2 25. Bc1) 22...
Nxe6 23. Bxg7 Kxg7 24. Bh3 Rd8 25. Nd5 Nb6 (25... Nd4 $11 {keeps the balance.})
26. f5 (26. Bxe6 $16 fxe6 27. Nc7) 26... Nd4 $11 27. f6+ Kf8 28. Ne7 Nd7 29.
Bxd7 Rxd7 30. e5 a5 31. Nd5 Ne6 32. Rf3 h5 33. exd6 Rxd6 34. Kg2 Ra8 35. Rfe3
a4 36. Kg3 axb3 37. axb3 Kg8 38. Re5 Kh7 39. R1e3 Rb8 40. Kf2 (40. h4 $142)
40... Rb7 (40... Ra6 $1 $17 41. Rd3 Ra3) 41. Ke1 (41. h4 $15) 41... Ra7 (41...
Ra6 $142 42. Rf3 Rb8) 42. Kf2 $17 Kh6 43. h4 Nc7 44. Re7 Nxd5 45. Rxa7 Nxe3 46.
Kxe3 Rxf6 $15 {[%mdl 4096] Endgame KR-KR} 47. Ra5 $1 {[%cal Ra5c5]} Rf5 48. b4
cxb4 {[%mdl 64] Discovered Attack} 49. Rxf5 ({White should try} 49. Rb5 $15)
49... gxf5 {KP-KP} 50. c5 b3 51. Kd2 f4 52. c6 f3 $2 ({Better is} 52... b2 $19
53. Kc2 f3) 53. c7 $11 f2 54. Ke2 (54. c8=Q {with more complications.} f1=Q 55.
Qh8+ Kg6 56. Qg8+ Kf6 57. Qg5+) 54... b2 55. c8=Q {White wants to mate with
Qh8+.} f1=Q+ {[%mdl 64] Decoy} 56. Kxf1 {Threatening mate with Qh8+.} b1=Q+ $15
{KQ-KQ} 57. Kg2 $2 {[%mdl 8192]} (57. Kf2 $15) 57... Qe4+ $19 58. Kg3 Qe5+ 59.
Kg2 Qe4+ 60. Kg3 Kg7 (60... Qe3+ $142 61. Kg2 Qe4+) 61. Qc3+ Kg6 62. Qc8 Qe5+
63. Kg2 Qd5+ 64. Kg3 Qe5+ 65. Kg2 Kg7 $2 (65... Qe2+ $1 $19 66. Kg3 Qd3+ 67.
Kf4 Qd4+ 68. Kg3 Kg7) 66. Qc4 $15 Qe3 67. Qb4 Kg6 {Hoping for ...Kf5.} 68. Qc4
Qe6 (68... Kf6 {feels hotter.} 69. Kh2 Qe6 70. Qf4+ Kg7 71. Qg5+ Qg6) 69. Qc2+
Qf5 70. Qc6+ Kh7 71. Qc7 $2 ({Only move:} 71. Qb7 $1 $15) 71... Qg4+ 72. Kf1
Qf3+ $1 ({Inferior is} 72... Qxh4 73. Qxf7+ Kh8 74. Qf8+ Kh7 75. Qf7+ Kh8 76.
Qf8+ Kh7 77. Qf7+ $11) 73. Kg1 $2 (73. Ke1) 73... Kg6 $1 $19 74. Qd8 Qg4+ $2 (
74... f6 $1 $19 75. Qg8+ Kf5) 75. Kh2 Kg7 76. Qe7 Qf4+ 77. Kg2 Qf6 (77... Kg6 {
is more complex.} 78. Qe8 Qf6 79. Qg8+ Kh6 80. Qe8 Kg7) 78. Qb4 Qf5 79. Kg3
Qd3+ (79... Qe5+ {seems wilder.} 80. Kh3 f6 81. Kg2 Qd5+ 82. Kg3 Qd3+) 80. Kg2
Kg6 81. Qf8 $2 {[%mdl 8192]} (81. Qa4 $15) 81... Qe4+ (81... Qe2+ $142 82. Kh1
f6) 82. Kg1 Qg4+ 83. Kf1 {intending Qg8+.} Qf3+ 84. Kg1 Qe3+ $2 (84... f6 $1
$19 85. Qg8+ Kf5) 85. Kf1 $15 Qd3+ (85... Qe5 {looks sharper.} 86. Qg8+ Qg7 87.
Qa8 Qf6+ 88. Kg2 Kg7) 86. Kg1 Qd4+ {[%mdl 64] Double Attack} 87. Kg2 $1 Qg7 88.
Qc5 Kh6+ 89. Kh2 Qf6 90. Qc1+ Kg7 91. Qg1+ Kh7 92. Qb1+ Qg6 93. Qb4 Qg4 94. Qe7
Kg6 95. Qd8 $1 Qf4+ 96. Kg2 Qe4+ 97. Kh2 Qe5+ (97... Kg7 {looks sharper.} 98.
Qg5+ Qg6 99. Qe7 Qf6 100. Qe4 Qd6+) 98. Kg2 f6 (98... Qf6 {looks sharper.} 99.
Qg8+ Kh6 100. Qg3 Qg6 101. Kh1 Qe4+) 99. Qg8+ Kf5 100. Qc8+ $2 {[%mdl 8192]} (
100. Qg7 $15) 100... Kf4 $19 101. Qc1+ {[#]} Kg4 $1 102. Qc4+ Qf4 103. Qc8+
Kxh4 104. Qh3+ Kg5 105. Qc3 (105. Qd3 $19) 105... h4 (105... Qe4+ $142 106. Kg1
h4 107. Qd2+ Kg4 108. Qd8 h3 109. Qd1+ Kg3 110. Qb3+ Kg4 111. Qd1+ Kf4 112.
Qd6+ Qe5 113. Qc6 Qe3+ 114. Kh2 Qg3+ 115. Kh1 Qf3+ 116. Qxf3+ Kxf3 117. Kh2 Kg4
118. Kg1 f5 119. Kf2 f4 120. Kf1 f3 121. Kg1 Kf4 122. Kf1 Ke3 123. Kg1 f2+ 124.
Kf1 h2 125. Kg2 h1=R {[%mdl 64] Deflection, Promotion} 126. Kxh1 Kf3 127. Kh2
f1=R 128. Kh3 Rh1#) 106. Qd3 h3+ 107. Qxh3 Qg4+ 108. Qg3 {[#]} Kf5 $2 (108...
Kh5 $1 {mates} 109. Kh1 Qh4+ 110. Kg2 Qxg3+ 111. Kxg3 Kg5 112. Kf3 Kf5 113. Kg3
Ke4 114. Kf2 Kf4 115. Kg2 Ke3 116. Kg3 f5 117. Kg2 f4 118. Kf1 Kf3 119. Ke1 Kg2
120. Ke2 f3+ 121. Ke3 f2 122. Kf4 f1=Q+ 123. Ke5 Qb5+ 124. Ke6 Kf3 125. Kd6 Ke4
126. Ke6 Qc6+ 127. Kf7 Kf5 128. Kg8 Kf6 129. Kh7 Qd7+ 130. Kh8 Qg7#) 109. Kh1
$1 $11 {The position is equal.} Qe4+ (109... Qd1+ {seems wilder.} 110. Kg2 Qd2+
111. Kh1 Qd5+ 112. Kg1 Qd4+) 110. Kg1 Qd4+ ({Much less strong is} 110... Qg4
111. Kh1 $15) (110... Qb1+ {keeps more tension.} 111. Kf2 Qb2+ 112. Kf1 Qb5+
113. Kg1 Qc5+) 111. Kg2 Qd2+ ({Don't do} 111... Qg4 112. Kh1 $17) 112. Kg1 Ke4
(112... Qg5 {is more complex.} 113. Kh1 Qg4 114. Qf2+ Qf4 115. Qc5+ Kg4) 113.
Qg4+ $1 Ke5 (113... Kd3 {is interesting.} 114. Qf5+ Kc4 115. Qxf6 Qe3+ 116. Kh2
Qe2+) 114. Qg3+ Ke4 115. Qg4+ Qf4 (115... Kd3 {looks sharper.} 116. Qf5+ Kc4
117. Qf1+ Kb4 118. Qxf6 Qe1+) 116. Qg2+ Qf3 117. Qc2+ Kf4 (117... Ke3 {is more
complex.} 118. Qb3+ Ke2 119. Qc2+ Ke1 120. Qc1+ Ke2) 118. Qc7+ Kg4 119. Qg7+ (
119. Qc8+ {is interesting.} Kg3 120. Qc7+ Kg4) 119... Kf5 120. Qd7+ Kf4 121.
Qc7+ Kg4 122. Qg7+ Kh3 123. Qh6+ Kg3 {[%csl Gg3][%cal Rf3g2]} 124. Qg6+ Qg4
125. Qd3+ Kf4+ 126. Kf2 Qh4+ 127. Kf1 Qh1+ (127... Kg5 {is more complex.} 128.
Qd5+ Kh6 129. Qd2+ Qg5 130. Qh2+ Kg6) 128. Kf2 Qe4 (128... Qh2+ {looks sharper.
} 129. Kf1 Kg5 130. Qd5+ Kh6 131. Qe6 Qh4) 129. Qd6+ (129. Qg3+ {feels hotter.}
Kf5 130. Kg1) 129... Kg5 (129... Qe5 {seems wilder.} 130. Qa3 Qd4+ 131. Ke2
Qc4+ 132. Kf2 Qc2+) 130. Qc5+ Kh4 131. Qc7 Qf5+ (131... f5 {is interesting.}
132. Qh7+ Kg5 133. Qg7+ Kh5 134. Qh7+ Kg5) 132. Ke2 Kh3 {White must now
prevent ...Qe4+.} 133. Qc3+ Kg2 134. Qc6+ Kg3 {Threatens to win with ...Qf2+.}
135. Qc3+ Kg4 136. Qc4+ Qf4 137. Qg8+ Kh3 138. Qh7+ Kg3 {aiming for ...Qf2+.}
139. Qd3+ Kg4 (139... Kh4 {is interesting.} 140. Qh7+ Kg5 141. Qg8+ Kf5 142.
Qd5+ Qe5+) 140. Qg6+ Qg5 141. Qe4+ Qf4 142. Qg6+ Kh3 {...Qg4+ is the strong
threat.} (142... Qg5 {keeps more tension.}) 143. Qh7+ Kg2 144. Qg6+ Qg5 145.
Qe4+ Kh2 146. Qh7+ (146. Kf2 {keeps more tension.} Qg3+ 147. Ke2 Qg2+ 148. Ke3
Qg3+ 149. Ke2) 146... Kg3 147. Qd3+ Kh4 {And now ...Qg2+ would win.} 148. Qh7+
Kg4 (148... Kg3 {is interesting.}) 149. Qe4+ Kg3 (149... Qf4 {is more complex.}
) 150. Qd3+ Kf4 {Strongly threatening ...Qg2+.} (150... Kh4 {with more
complications.}) 151. Qf3+ (151. Qe3+ {looks sharper.} Kf5 152. Qf3+ Kg6 153.
Qe4+ Kh6 154. Kf3) 151... Ke5 152. Qe3+ Kf5 {( -> ...Qxe3+)} 153. Qd3+ Ke6 (
153... Kf4 $5 {[%cal Rg5g2]} 154. Qd4+ Kg3 155. Qg1+ Kh3 156. Qh1+ Kg3 157.
Qf3+ $11) 154. Qe4+ Kd6 (154... Kf7 {seems wilder.} 155. Kf3 Qh5+ 156. Kf2 Kg7
157. Qe7+) 155. Qd4+ Ke7 156. Qe3+ Kf7 157. Qxg5 fxg5 158. Kf3 g4+ 159. Kxg4 {
Black had all chances to win.  Weighted Error Value: White=0.31/Black=0.29}
1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "14.7"]
[White "Aronian, Levon"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2782"]
[BlackElo "2772"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 27,28,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. dxe5
Nxb5 7. a4 Nbd4 8. Nxd4 Nxd4 9. Qxd4 d5 10. exd6 Qxd6 11. Qe4+ Qe6 12. Qd4 Qd6
13. Qe4+ Qe6 14. Qd4 Qd6 {[#]} {Predecessor:} 15. Qe3+ $146 {C67: Ruy Lopez:
Berlin Defence: 4 0-0 Nxe4.} Be7 16. Nc3 c6 17. Ne4 Qg6 18. Nc5 Qd6 19. Re1 b6
20. Ne4 Qe5 21. a5 bxa5 22. Rxa5 Qc7 23. Rg5 Kf8 24. Rxg7 h6 25. Qd4 Be6 26.
Rg6 fxg6 27. Qxh8+ {1-0 (25) Abdusattorov,N (2627)-Nakamura,H (2736) Chess.com
INT 2021} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "14.8"]
[White "Van Foreest, Jorden"]
[Black "Carlsen, Magnus"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2698"]
[BlackElo "2847"]
[Annotator "TA"]
[PlyCount "113"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,113,17,14,4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,12,0,0,-8,-4,-16,
-8,-8,-8,-8,-8,-14,-8,-16,0,0,0,-9,-6,0,0,-44,-28,-48,-6,-6,-10,-29,0,-2,-2,-2,
-4,-7,-7,-35,-8,-14,-8,-8,-8,-8,-3,-14,-11,-11,-8,-8,0,0,0,0,0,-35,-35,-35,-35,
-35,-35,-36,-30,-110,-72,-287,-287,-287,-287,-287,-287,-273,-272,-258,-8,-8,-8,
-8,0,-8]} 1. d4 d6 2. e4 g6 3. Nc3 c6 4. Nf3 Nf6 5. h3 Bg7 6. Bd3 O-O 7. O-O
Nbd7 8. Ne2 {8.e5 is setting a new trend. B08: Pirc Defence: Classical System.}
e5 9. c3 d5 10. Ng3 {[#]} dxe4 $146 ({Predecessor:} 10... exd4 11. Nxd4 Nc5 12.
e5 Nfe4 13. Bxe4 dxe4 14. Be3 Qe7 15. b4 Nd3 16. Nxe4 Nxe5 {0-1 (37)
Pruijssers,R (2508)-Sandipan,C (2575) Dieren 2017}) 11. Nxe4 Nxe4 12. Bxe4 exd4
13. Nxd4 Re8 14. Re1 Nb6 15. Bf4 Bxd4 16. cxd4 Be6 17. Qd2 Bd5 18. Bc2 f6 19.
b3 Qd7 20. a4 Be6 21. Bg3 Bf5 22. Rxe8+ Rxe8 23. Bd1 Nd5 24. Be2 Kg7 25. Bc4 g5
26. b4 a6 27. Bf1 b5 28. axb5 axb5 29. Rc1 h5 30. h4 gxh4 31. Bxh4 Re4 32. Bg3
Ne7 (32... h4 $5 {[%cal Rh4g3]} 33. Bh2 h3 $15) 33. Re1 Rxe1 34. Qxe1 Nd5 35.
f3 Kf7 36. Kh2 (36. Qd2 {is interesting.} Qe7 37. Be1 Bg6 38. Qe2 Qe6 39. Qd2)
36... Bg6 37. Kh1 (37. Kg1 {seems wilder.} Qe6 38. Qd2 Qe3+ 39. Qxe3 Nxe3 40.
Bf4) 37... Qe6 38. Kg1 Qe3+ (38... Qxe1 {is more complex.} 39. Bxe1 Ke6 40. Kf2
Bc2 41. Be2 Nf4) 39. Qxe3 Nxe3 $11 {[%mdl 4096] Endgame KBB-KBN} 40. Bf2 Nd5
41. Be1 $1 Ke6 42. Kf2 Nc7 43. Ke3 Kd5 44. g4 Ne6 45. Bc3 f5 46. gxh5 f4+ 47.
Kf2 Bxh5 48. Bd3 Nxd4 49. Be4+ (49. Bd2 $11 {remains equal.}) 49... Kc4 $17 50.
Bxd4 {[#]} (50. Bd2 $17) 50... Kxd4 $19 51. Bxc6 $17 {KB-KB} Kc4 52. Kg2 {
intending Kh3.} Kxb4 53. Kh3 Kc5 54. Bxb5 Kxb5 $2 (54... Bxf3 $19 55. Kh4 Kd4)
55. Kh4 $1 $11 {[%cal Rh4h5] The position is equal.} Bxf3 {[#] ( -> ...Bc6)}
56. Kg5 Bg4 57. Kxf4 {Weighted Error Value: White=0.14/Black=0.11} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "15.1"]
[White "Carlsen, Magnus"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2847"]
[BlackElo "2738"]
[Annotator "ChessBase"]
[PlyCount "248"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "900+10"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:02]} e6 {[%emt 0:
00:04]} 3. c3 {[%emt 0:00:04]} Nf6 {[%emt 0:00:04]} 4. e5 {[%emt 0:00:01]} Nd5
{[%emt 0:00:01]} 5. Bc4 {[%emt 0:00:04]} d6 {[%emt 0:00:28]} 6. d4 {[%emt 0:00:
05]} Nb6 {[%emt 0:00:45]} 7. Bb3 {[%emt 0:00:02]} cxd4 {[%emt 0:00:09]} 8. cxd4
{[%emt 0:00:01]} Bd7 {[%emt 0:00:10]} 9. O-O {[%emt 0:00:08]} Bc6 {[%emt 0:00:
02]} 10. Nc3 {[%emt 0:00:00]} Be7 {[%emt 0:00:16]} 11. exd6 {[%emt 0:00:05]}
Qxd6 {[%emt 0:00:05]} 12. Ne5 {[%emt 0:00:01]} N8d7 {[%emt 0:02:05]} 13. Nxc6 {
[%emt 0:00:03]} bxc6 {[%emt 0:00:00]} 14. Ne4 {[%emt 0:00:02]} Qb4 {[%emt 0:00:
02]} 15. a3 {[%emt 0:01:19]} Qb5 {[%emt 0:00:08]} 16. Nc3 {[%emt 0:00:09]} Qa6
{[%emt 0:00:40]} 17. Qg4 {[%emt 0:00:09]} Bf6 {[%emt 0:02:02]} 18. Ne4 {
[%emt 0:00:11]} O-O {[%emt 0:00:02]} 19. Bc2 {[%emt 0:00:47]} Qc4 {[%emt 0:01:
15]} 20. Nxf6+ {[%emt 0:00:45]} Nxf6 {[%emt 0:00:00]} 21. Qd1 {[%emt 0:00:01]}
Rfd8 {[%emt 0:00:17]} 22. Be3 {[%emt 0:00:02]} Qb5 {[%emt 0:01:35]} 23. Qc1 {
[%emt 0:00:02]} Nbd5 {[%emt 0:00:28]} 24. Bg5 {[%emt 0:00:13]} h6 {[%emt 0:00:
19]} 25. Bh4 {[%emt 0:00:06]} a5 {[%emt 0:00:08]} 26. Rd1 {[%emt 0:00:06]} Rdc8
{[%emt 0:00:39]} 27. Bg3 {[%emt 0:00:24]} c5 {[%emt 0:00:20]} 28. dxc5 {
[%emt 0:00:01]} Rxc5 {[%emt 0:00:03]} 29. Qd2 {[%emt 0:00:03]} Rac8 {[%emt 0:
00:09]} 30. Bd3 {[%emt 0:00:10]} Qb3 {[%emt 0:00:26]} 31. h3 {[%emt 0:00:02]}
a4 {[%emt 0:00:06]} 32. Bd6 {[%emt 0:00:14]} R5c6 {[%emt 0:00:11]} 33. Be5 {
[%emt 0:00:01]} Nd7 {[%emt 0:00:09]} 34. Bd4 {[%emt 0:00:02]} Nc5 {[%emt 0:00:
51]} 35. Bc2 {[%emt 0:00:17]} Qb5 {[%emt 0:00:02]} 36. Bxc5 {[%emt 0:00:41]}
Rxc5 {[%emt 0:00:00]} 37. Be4 {[%emt 0:00:07]} Qb6 {[%emt 0:01:05]} 38. Rac1 {
[%emt 0:00:06]} g5 {[%emt 0:00:44]} 39. Rxc5 {[%emt 0:00:03]} Rxc5 {[%emt 0:00:
00]} 40. Qd4 {[%emt 0:00:46]} Rc1 {[%emt 0:00:58]} 41. Bh7+ {[%emt 0:00:03]}
Kxh7 {[%emt 0:00:10]} 42. Qd3+ {[%emt 0:00:01]} Kg7 {[%emt 0:00:01]} 43. Rxc1 {
[%emt 0:00:00]} Qxb2 {[%emt 0:00:01]} 44. Rc2 {[%emt 0:00:29]} Qa1+ {[%emt 0:
01:02]} 45. Kh2 {[%emt 0:00:03]} h5 {[%emt 0:00:05]} 46. Rc4 {[%emt 0:00:14]}
Qe5+ {[%emt 0:00:19]} 47. Qg3 {[%emt 0:00:17]} Qf6 {[%emt 0:00:26]} 48. h4 {
[%emt 0:00:01]} g4 {[%emt 0:00:04]} 49. Rxa4 {[%emt 0:00:02]} e5 {[%emt 0:00:
22]} 50. Re4 {[%emt 0:00:09]} Nf4 {[%emt 0:00:02]} 51. a4 {[%emt 0:00:01]} Qd6
{[%emt 0:00:30]} 52. a5 {[%emt 0:00:12]} Qd5 {[%emt 0:00:28]} 53. Qe3 {[%emt 0:
00:56]} f5 {[%emt 0:00:25]} 54. Rxf4 {[%emt 0:00:02]} exf4 {[%emt 0:00:01]} 55.
Qe7+ {[%emt 0:00:01]} Kg8 {[%emt 0:00:07]} 56. Qg5+ {[%emt 0:00:47]} Kf8 {
[%emt 0:00:05]} 57. a6 {[%emt 0:00:12]} g3+ {[%emt 0:01:13]} 58. fxg3 {[%emt 0:
00:03]} f3 {[%emt 0:00:01]} 59. a7 {[%emt 0:00:42]} fxg2 {[%emt 0:01:34]} 60.
Qxh5 {[%emt 0:00:12]} Kg7 {[%emt 0:00:49]} 61. Qe2 {[%emt 0:00:23]} Qc5 {
[%emt 0:00:13]} 62. Kxg2 {[%emt 0:01:37]} Qxa7 {[%emt 0:00:02]} 63. Qe5+ {
[%emt 0:00:01]} Kg8 {[%emt 0:00:09]} 64. Qxf5 {[%emt 0:00:01]} Qb7+ {[%emt 0:
00:03]} 65. Kh2 {[%emt 0:00:06]} Kh8 {[%emt 0:00:04]} 66. Qe5+ {[%emt 0:00:08]}
Kh7 {[%emt 0:00:06]} 67. g4 {[%emt 0:00:02]} Qb3 {[%emt 0:00:38]} 68. h5 {
[%emt 0:00:09]} Kg8 {[%emt 0:00:19]} 69. Qf6 {[%emt 0:00:42]} Qd3 {[%emt 0:00:
20]} 70. Kg2 {[%emt 0:00:41]} Qe3 {[%emt 0:00:11]} 71. Qf3 {[%emt 0:01:05]} Qe5
{[%emt 0:00:04]} 72. Kh3 {[%emt 0:00:03]} Qg5 {[%emt 0:00:12]} 73. Qe4 {
[%emt 0:00:09]} Kh8 {[%emt 0:00:13]} 74. Kg3 {[%emt 0:00:04]} Qf6 {[%emt 0:00:
04]} 75. Qf4 {[%emt 0:00:04]} Qe7 {[%emt 0:00:09]} 76. Qd4+ {[%emt 0:00:21]}
Kg8 {[%emt 0:00:03]} 77. Kf4 {[%emt 0:00:17]} Qf7+ {[%emt 0:00:14]} 78. Kg5 {
[%emt 0:00:06]} Qe7+ {[%emt 0:00:01]} 79. Qf6 {[%emt 0:00:22]} Qe3+ {[%emt 0:
00:14]} 80. Kg6 {[%emt 0:00:23]} Qe4+ {[%emt 0:00:23]} 81. Qf5 {[%emt 0:00:02]}
Qc6+ {[%emt 0:00:09]} 82. Kg5 {[%emt 0:00:04]} Qc1+ {[%emt 0:00:03]} 83. Qf4 {
[%emt 0:00:17]} Qc5+ {[%emt 0:00:02]} 84. Kh4 {[%emt 0:00:12]} Qc6 {[%emt 0:00:
02]} 85. Qg5+ {[%emt 0:00:13]} Kh8 {[%emt 0:00:07]} 86. Qe5+ {[%emt 0:00:03]}
Kh7 {[%emt 0:00:21]} 87. Kg5 {[%emt 0:00:10]} Qh6+ {[%emt 0:00:04]} 88. Kf5 {
[%emt 0:00:02]} Qf8+ {[%emt 0:00:03]} 89. Ke4 {[%emt 0:00:08]} Qb4+ {[%emt 0:
00:07]} 90. Kf3 {[%emt 0:00:01]} Qa3+ {[%emt 0:00:23]} 91. Kg2 {[%emt 0:00:10]}
Qa6 {[%emt 0:00:14]} 92. Qe4+ {[%emt 0:00:28]} Kh8 {[%emt 0:00:08]} 93. g5 {
[%emt 0:00:17]} Qd6 {[%emt 0:00:26]} 94. Kh3 {[%emt 0:00:14]} Qd7+ {[%emt 0:00:
13]} 95. Kh4 {[%emt 0:00:06]} Qf7 {[%emt 0:00:10]} 96. Qd4+ {[%emt 0:00:18]}
Kg8 {[%emt 0:00:02]} 97. Qd8+ {[%emt 0:00:34]} Kg7 {[%emt 0:00:01]} 98. h6+ {
[%emt 0:00:05]} Kh7 {[%emt 0:00:02]} 99. Qd3+ {[%emt 0:00:03]} Kh8 {[%emt 0:00:
10]} 100. Qd4+ {[%emt 0:00:04]} Kh7 {[%emt 0:00:13]} 101. Qe4+ {[%emt 0:00:10]}
Kh8 {[%emt 0:00:01]} 102. Kg3 {[%emt 0:00:20]} Qc7+ {[%emt 0:00:31]} 103. Qf4 {
[%emt 0:00:05]} Qd7 {[%emt 0:00:16]} 104. Kh4 {[%emt 0:00:07]} Qb7 {[%emt 0:00:
15]} 105. Qf8+ {[%emt 0:01:29]} Kh7 {[%emt 0:00:02]} 106. Qf5+ {[%emt 0:00:01]}
Kh8 {[%emt 0:00:01]} 107. Kh5 {[%emt 0:00:57]} Qf7+ {[%emt 0:00:08]} 108. Kg4 {
[%emt 0:00:02]} Qc4+ {[%emt 0:00:06]} 109. Kg3 {[%emt 0:00:09]} Qc3+ {[%emt 0:
00:22]} 110. Qf3 {[%emt 0:00:09]} Qe5+ {[%emt 0:00:11]} 111. Kh4 {[%emt 0:00:
43]} Qh2+ {[%emt 0:00:13]} 112. Kg4 {[%emt 0:00:03]} Qc7 {[%emt 0:00:10]} 113.
Qe4 {[%emt 0:00:34]} Qd7+ {[%emt 0:00:07]} 114. Kh4 {[%emt 0:00:05]} Qf7 {
[%emt 0:00:08]} 115. Qd4+ {[%emt 0:00:14]} Kh7 {[%emt 0:00:05]} 116. Qd3+ {
[%emt 0:00:38]} Kh8 {[%emt 0:00:01]} 117. Qc3+ {[%emt 0:00:02]} Kh7 {[%emt 0:
00:01]} 118. Qc2+ {[%emt 0:00:03]} Kh8 {[%emt 0:00:02]} 119. Kg3 {[%emt 0:00:
04]} Qd7 {[%emt 0:00:35]} 120. Qe2 {[%emt 0:00:34]} Qd6+ {[%emt 0:00:10]} 121.
Kg4 {[%emt 0:00:10]} Qd7+ {[%emt 0:00:04]} 122. Kh4 {[%emt 0:00:02]} Qf7 {
[%emt 0:00:09]} 123. Qe5+ {[%emt 0:00:29]} Kh7 {[%emt 0:00:01]} 124. Qe4+ {
[%emt 0:00:08]} Kh8 {[%emt 0:00:02]} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "15.2"]
[White "So, Wesley"]
[Black "Van Foreest, Jorden"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "2772"]
[BlackElo "2698"]
[Annotator "TA"]
[PlyCount "69"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,69,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,35,36,43,36,83,59,89,94,109,98,106,
99,102,52,208,200,184,198,279,213,370,223,366,259,418,395,425,385,537,530,566,
464,607,600,889,600,768,749,745,730,677,650]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4.
Qc2 O-O 5. e4 d5 6. e5 Ne4 7. Bd3 c5 $1 {[%cal Rc5d4]} 8. Nf3 {E32:
Nimzo-Indian: Classical (4 Qc2): 4...0-0.} cxd4 9. Nxd4 Nd7 10. Bf4 {The
position is equal.} Qh4 11. g3 Qh5 12. O-O g5 13. cxd5 Bxc3 14. bxc3 gxf4 15.
dxe6 Nxe5 16. Bxe4 Bxe6 17. Rfe1 {[#]} (17. Nxe6 $6 fxe6 18. Rfb1 Rab8 $11)
17... Kh8 $146 ({Predecessor:} 17... Rad8 18. Qd2 fxg3 19. hxg3 Bd5 20. Qf4 Ng6
21. Qf6 Bxe4 22. Rxe4 Rd5 23. Rb1 b6 {1-0 (41) Spoelman,W (2571)-L'Ami,E (2650)
Amsterdam 2014}) 18. Bxb7 Rab8 19. Bg2 (19. gxf4 $2 Rg8+ 20. Kh1 Ng4 $19) 19...
fxg3 20. fxg3 Bc4 21. Qa4 {aiming for Rxe5!} f6 {[#] This move loses the game
for Black.} ({Avoid the trap} 21... Rb2 $2 22. Rxe5 $1 {[%mdl 512]} Qxe5 23.
Qxc4 $18) (21... Rfc8 $1 $14) 22. Rxe5 $1 $18 {[%mdl 576] Remove Defender} fxe5
23. Qxc4 Qg6 (23... Qg4 $142) 24. Nb3 Qc2 $2 (24... Rbc8 25. Qd5 Rxc3 26. Qxe5+
Qf6 27. Qxf6+ Rxf6) 25. Be4 Qf2+ 26. Kh1 Rb6 $2 (26... Qe3 {keeps fighting.}
27. Qd5 Rb5) 27. Qc7 {[%csl Ge4][%cal Rc7h7]} Rh6 {[%csl Gf2][%cal Rh6h2]} 28.
Qxe5+ Rff6 {[%csl Gf2][%cal Rh6h2]} 29. Bg2 {White is clearly winning.} ({
Inferior is} 29. h4 Rxh4+ 30. gxh4 Qxh4+ 31. Kg1 Qf2+ 32. Kh1 Qh4+ 33. Kg2 Qg4+
34. Kh2 Qh4+ 35. Kg1 Qf2+ 36. Kh1 Qh4+ $11) 29... Kg8 {( -> ...Rxh2+!)} 30. h3
{And now Nd4 would win.} Rhg6 31. Rg1 Kg7 32. Nc5 Qf5 33. Qd4 {Strongly
threatening Rf1.} Qf2 34. Ne6+ Kh8 35. Nf4 {Weighted Error Value: White=0.24/
Black=0.52} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "15.3"]
[White "Vidit, Santosh Gujrathi"]
[Black "Aronian, Levon"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2726"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,71,15,9,11,4,16,10,15,2,20,25,16,0,0,0,9,11,5,11,8,9,15,25,21,6,6,7,
19,0,0,-4,0,-22,-22,-44,-48,-44,-24,-37,-16,-8,-4,-40,0,-6,156,141,268,268,276,
261,388,325,389,266,781,747,962,948,900,877]} 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. f4 Bxc3 13. Bxc3 Ng4 14. Bd4 c5 15. Bxc5 Re8 $1
16. O-O {With the idea Rfd1.} Nxe3 17. Bxe3 Rxe3 18. Rae1 Rxe1 19. Rxe1 {[#]}
b5 $146 ({Predecessor:} 19... Qd4+ 20. Qf2 Qxf2+ 21. Kxf2 Kf8 22. Bd5 Bd7 23.
Re3 Rc8 24. Bxb7 Rb8 25. Rb3 Ba4 {1/2-1/2 (38) So,W (2770)-Nepomniachtchi,I 
(2792) Paris 2021}) 20. Bf1 Be6 21. a3 $40 {[%mdl 128] White has some attack.}
Rc8 22. Qf2 a6 23. g3 g6 24. h4 Qf6 25. Re5 Rc1 26. Qd2 Rb1 {[#] ...Bc4 is the
strong threat.} 27. Kf2 Bc4 28. Bg2 a5 $2 (28... Qb6+ $11 29. Re3 a5) 29. Qd4
$16 {Strongly threatening Re8+.} Kg7 (29... Be6 $16 30. Bh3 Rh1) 30. h5 $18 h6
31. hxg6 fxg6 (31... Rc1 $142 32. gxf7 Rc2+ 33. Kg1 Bxf7) 32. a4 {[%cal Ba3a4,
Ba4b5,Bb5b6,Bb6b7][%mdl 32]} Bf7 33. axb5 {Black must now prevent b6.} g5 $2 (
33... a4 34. Be4 Rc1) 34. b6 {Threatens to win with b7.White is clearly
winning.} gxf4 35. b7 Rd1 {[#]} 36. Rg5+ $1 {[%mdl 576] Pin, Promotion. 
Weighted Error Value: White=0.15/Black=0.29} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "15.4"]
[White "Le, Quang Liem"]
[Black "Liang, Awonder"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2709"]
[BlackElo "2587"]
[Annotator "TA"]
[PlyCount "185"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,185,26,26,33,33,33,33,34,34,35,33,37,35,45,23,24,31,27,27,44,44,60,
59,60,60,78,78,147,136,136,145,156,123,122,44,44,43,45,36,36,36,40,36,42,42,50,
48,56,6,6,11,174,172,238,119,127,123,125,63,69,69,112,61,56,52,67,67,67,65,67,
67,89,86,68,4,16,16,41,16,45,47,47,52,45,68,283,268,279,291,398,397,385,363,
349,7,7,14,14,14,54,0,0,0,0,0,0,0,418,372,485,469,646,643,629,621,1383,1301,
1198,1185,1054,821,709,210,212,0,212,247,922,206,29991,29992,29992,29991,29991,
29992,29993,29985,29985,29986,29986,29973,6121,0,29986,0,0,0,8,0,29985,29986,
29986,29987,29987,29988,29988,29989,29995,29996,29996,29997,29997,29998]} 1. e4
c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 Qd7 8. Nd2 e6
9. Ngf3 Bd6 10. Bxd6 Qxd6 11. O-O O-O 12. Rfe1 Bxf3 13. Nxf3 Qc7 {outshines
the older 13...Rab8. B13: Caro-Kann: Exchange Variation and Panov-Botvinnik
Attack.} 14. Qc2 g6 {[#]} 15. g3 $146 ({Predecessor:} 15. Qd2 Kg7 16. Re3 h6
17. Rae1 Nd7 18. h4 Nf6 19. Ne5 Nxe5 20. dxe5 Ng4 21. Rg3 {1/2-1/2 (34) Pepene,
G (2494)-Rydholm,L (2511) ICCF email 2018}) 15... Kg7 {White is slightly
better.} 16. Kg2 Rab8 17. Qe2 a6 18. h4 h5 19. Rac1 Ng4 20. Qd2 Rbe8 21. Re2
Na5 22. Rce1 Nc4 23. Qc1 Nd6 24. Qf4 Qb8 25. Ne5 Nxe5 (25... Nb5 $142) 26. dxe5
$16 (26. Qxe5+ $6 f6 $14) (26. Rxe5 $6 Qd8 $14) 26... Nf5 27. Bxf5 exf5 28. Qd4
Re6 29. Qxd5 ({Better is} 29. Rd1 $16) 29... Rd8 $14 30. Qf3 b5 31. Qe3 Rd5 32.
f4 Qd8 33. Qf3 Rd3 34. Re3 Rd2+ 35. R1e2 Rd1 36. b3 (36. Rc2 {feels hotter.}
Re7 37. Kh3 Rc7 38. a3 a5 39. Rh2) 36... Qd7 37. Kh3 Ra1 $2 (37... a5 $11 {
and Black is okay.}) 38. Rd3 $18 Qa7 (38... Qc6 {is a better defense.} 39. Qxc6
Rxc6) 39. Red2 (39. Rd8 $18 {And now Red2 would win.} Qg1 40. Red2) 39... Re8
$16 40. Rd7 Qg1 41. Rd1 ({White should try} 41. Qb7 $16 Kg8 42. Qg2 (42. Qxa6
g5 43. fxg5 f4 {[%mdl 64] Decoy} 44. gxf4 Qg4+ 45. Kh2 Qxf4+ 46. Kg2 Qe4+ 47.
Kf2 Qxh4+ 48. Kg2 Qh1+ 49. Kg3 Rg1+ 50. Rg2 Qxg2+ 51. Kf4 Qg3+ 52. Ke4 Rxe5+ {
[%mdl 64] Double Attack} 53. Kd4 Qe3#) (42. Rxf7 Qf1+ 43. Kh2 Qg1+ 44. Kh3 Qf1+
45. Rg2 Qh1+ 46. Rh2 Qf1+ 47. Rg2 Qh1+ 48. Rh2 Qf1+ 49. Rg2 $11)) 41... Rxd1
$14 42. Rxd1 {[%mdl 4096] Endgame KQR-KQR} Qc5 43. Kg2 ({White should play} 43.
c4 $16) 43... Rc8 44. Rd3 Qa3 45. Qe2 Qc1 46. e6 {Strongly threatening exf7.}
fxe6 47. c4 Kh6 48. Rd6 (48. Qxe6 $6 Qc2+ 49. Kh3 Qxd3 $11) 48... Re8 49. Qd2 (
49. Rxa6 $2 Rd8 $19) (49. Rd7 $14 Qc3 50. cxb5) 49... Qb1 50. c5 {aiming for
b4.} Rc8 51. b4 (51. Rxa6 $2 Rxc5 52. Rxe6 (52. Qd8 $2 Rc2+ {[%mdl 64] Double
Attack} 53. Qd2 Rxd2+ 54. Kh3 Qh1#) 52... Rc2 $19) 51... Qe4+ 52. Kh2 a5 53. a3
$36 {[%mdl 2048] White is pushing.} axb4 $1 54. axb4 Qb1 $2 (54... Ra8 $14) 55.
Rxe6 $18 Ra8 {...Ra2! is the strong threat.} 56. Re1 Ra2 57. Rxb1 Rxd2+ {KR-KR}
58. Kg1 $1 Rc2 59. Ra1 $2 (59. Rd1 $1 $18 {[%cal Rd1d3]} Rc4 60. Kf2) 59... Rc4
$11 60. Kf2 Kg7 $1 61. Ke3 Kf7 62. Ra7+ (62. Rb1 $14) 62... Ke6 63. Ra6+ Kf7
64. Rb6 Rxb4 65. Kd3 Ke7 $2 {[%mdl 8192]} (65... Kg7 $11) 66. Rxg6 $18 Rc4 67.
c6 $1 Rc1 68. Kd4 $1 {[%cal Rd4d5]} b4 69. Kd5 $1 b3 70. Rg7+ Kd8 71. Rb7 Rc3
72. Kd6 {[%cal Rb7b8]} Kc8 73. Ra7 $2 (73. Rg7 {[%cal Rg7g8]} Rd3+ 74. Ke5)
73... Rd3+ 74. Ke6 $2 (74. Ke5 $18) 74... Rxg3 $2 (74... Rc3 $11 75. Kd6 (75.
Kxf5 Rc5+ 76. Ke4 Rxc6 $11) 75... Rd3+ 76. Ke5 Rxg3) 75. Kxf5 Rg4 $2 (75... Rc3
) 76. Ke5 $2 (76. Rb7 Rxh4 77. Rxb3) 76... Rxh4 $2 (76... Rg6 $18) 77. Kd6 {
[%cal Ra7a8]} Kb8 78. Rb7+ Ka8 79. Rxb3 Rxf4 80. c7 Rf8 81. Kc6 {[%cal Rb3a3]}
Rf6+ 82. Kd5 Rf8 83. Kc6 (83. Rb6 $18 Ka7 84. Rf6 $3 {[%mdl 576] Promotion})
83... Rf6+ 84. Kd7 $2 (84. Kc5 $1 {mates} Rf8 85. Kb6 Rf6+ 86. Ka5 Rc6 87. Rb8+
Ka7 88. c8=Q Rxc8 89. Rxc8) 84... Rf7+ $11 85. Kd6 ({Weaker is} 85. Kc6 Rf6+)
85... Rf8 $1 86. Rb4 {Threatening mate with Kc6.} ({Less strong is} 86. Kc6
Rf6+) (86. Rb5 {with more complications.} h4 87. Kd7 Rf7+ 88. Kc6 Rf6+ 89. Kd5)
86... Rg8 $2 {[%mdl 8192]} (86... Ka7 $11) 87. Kc6 $1 {[%cal Rb4a4] White
mates.} Rg6+ 88. Kc5 $1 Rg5+ 89. Kb6 $1 {[%cal Rc7c8]} Rg6+ {[#]} 90. Ka5 $1
Rg8 {[#]} 91. Ka6 $1 h4 92. Rb6 h3 93. Rd6 {Weighted Error Value: White=0.25/
Black=0.21} 1-0

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "15.5"]
[White "Firouzja, Alireza"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "2759"]
[BlackElo "2776"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,85,22,23,24,0,0,0,0,0,0,-10,0,0,9,0,0,0,4,0,0,-7,-7,-11,-7,0,0,-14,
-6,-10,0,-45,-6,-69,-68,-69,-71,-72,-68,-70,-73,-71,-70,-76,-77,-76,-78,-69,
-69,-67,-74,-69,-78,-70,-48,-37,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. Nf3 Nf6
3. c4 c6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 a6 7. e3 Bg4 8. h3 Bxf3 9. Qxf3 e6 10.
Bd3 Bd6 11. Bg5 Be7 {D13: Slav Defence: Exchange variation without ...Bf5.} 12.
Bxf6 Bxf6 13. O-O O-O 14. Rac1 {[#]} g6 $146 ({Predecessor:} 14... Rc8 15. Qd1
g6 16. f4 Be7 17. Na4 Nb4 18. Rxc8 Qxc8 19. Bb1 b5 20. Nc3 Nc6 {1/2-1/2 (59)
Prohaszka,P (2604)-Andreikin,D (2733) Abu Dhabi 2016}) 15. a3 h5 16. Rfd1 Kg7
17. Na4 Qd6 18. Nc5 Rab8 19. b4 Rfc8 20. Bf1 a5 21. Rb1 axb4 22. axb4 b6 23.
Nd3 Ra8 24. Rdc1 Ne7 25. Qf4 Nf5 26. b5 ({White should try} 26. g4 $11 hxg4 27.
hxg4 Qxf4 28. Nxf4) 26... Qxf4 27. Nxf4 Rxc1 28. Rxc1 Bg5 29. g3 h4 $1 {
[%cal Rh4g3]} 30. Rc7 Kg8 31. Bd3 hxg3 32. Bxf5 {[#] Bc2 is the strong threat.}
gxf2+ 33. Kxf2 {Threatens to win with Bd3.} gxf5 $17 {[%mdl 4096] Endgame
KRB-KRN} 34. Rb7 Bh4+ $1 35. Kf3 Ra2 $1 {[%csl Gh4][%cal Ra2f2] [#]} 36. Ne2
Ra1 $1 {[%cal Ra1f1]} 37. Nf4 $1 Ra2 {[%csl Gh4][%cal Ra2f2]} (37... Rf1+ {
looks sharper.} 38. Ke2 Rf2+ 39. Kd1 Bg5 40. Ke1 Ra2) 38. Ne2 {The position is
equal.} f6 {And now ...e5 would win.} 39. Re7 Ra1 {Hoping for ...Rf1+.} 40. Nf4
({Don't blunder} 40. Rxe6 $2 Rf1+ 41. Kg2 Rf2+ 42. Kg1 Rxe2 $19) 40... Ra2 {
[%csl Gh4][%cal Ra2f2]} 41. Ne2 Ra1 {White must now prevent ...Rf1+.} 42. Nf4 (
{Avoid the trap} 42. Rxe6 $2 Rf1+ 43. Kg2 Rf2+ {[%mdl 64] Double Attack} 44.
Kg1 Rxe2 $19) 42... Ra2 {[%csl Gh4][%cal Ra2f2]} 43. Ne2 {Weighted Error Value:
White=0.06/Black=0.03} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "15.6"]
[White "Naroditsky, Daniel"]
[Black "Artemiev, Vladislav"]
[Result "1/2-1/2"]
[ECO "C72"]
[WhiteElo "2623"]
[BlackElo "2704"]
[Annotator "TA"]
[PlyCount "135"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,135,9,5,5,0,10,0,2,-14,4,6,3,0,0,0,15,0,0,0,10,8,20,-8,0,-10,-8,-8,0,
-16,-13,-12,-13,-12,0,-5,0,-3,0,0,0,0,0,0,0,0,0,0,12,12,8,0,0,0,0,0,0,0,12,0,0,
0,0,0,0,0,0,0,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,16,8,8,8,8,0,0,0,
-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. Bb5
a6 4. Ba4 d6 5. O-O Bd7 6. c4 Nf6 7. Nc3 Be7 8. d4 Nxd4 9. Nxd4 exd4 10. Bxd7+
Nxd7 11. Qxd4 Bf6 {C72: Ruy Lopez: Deferred Steinitz: 5 0-0.} 12. Qd2 O-O 13.
Nd5 Re8 {[#] The position is equal.} 14. Re1 $146 ({Predecessor:} 14. f3 Be5
15. Qc2 c6 16. Ne3 Qf6 17. Kh1 Qe6 18. Bd2 Nf6 19. Rae1 Bf4 20. Nf5 Bxd2 21.
Qxd2 {1/2-1/2 (50) Janosevic,D-Filip,M Harrachov 1966}) 14... Nc5 15. Nxf6+
Qxf6 16. f3 b5 17. Qc2 Ne6 18. cxb5 axb5 19. Be3 h6 20. a3 Reb8 21. Qd2 Ra6 22.
f4 Ra4 23. b4 Qe7 24. Qb2 Rba8 25. Bd2 c5 26. f5 Ng5 27. Bxg5 hxg5 28. bxc5
dxc5 29. Qxb5 Qe5 30. Rac1 Qd4+ 31. Kh1 Rxa3 32. Qxc5 Qxc5 33. Rxc5 $11 {
[%mdl 4096] Endgame KRR-KRR} Ra1 {[%cal Ra1e1] [#]} 34. Rcc1 R1a4 35. e5 Re8
36. e6 fxe6 37. fxe6 Ra6 38. e7 (38. h3 {feels hotter.} Raxe6 39. Rxe6 Rxe6 40.
Rc5 g4 41. hxg4 Re4 42. Rg5) 38... Ra7 39. g3 (39. Kg1 {looks sharper.} g4 40.
Kf2 Rexe7 41. Rxe7 Rxe7 42. Rc4) 39... Raxe7 40. Rxe7 Rxe7 {KR-KR} 41. Rc5 Re1+
42. Kg2 Re2+ 43. Kg1 Ra2 44. Rxg5 Ra1+ 45. Kg2 Ra2+ 46. Kh3 Kf7 47. Rg4 g6 48.
Rc4 Kf6 49. Rc6+ Kg5 50. Rc5+ Kf6 51. g4 g5 52. Rf5+ Kg6 53. Kg3 Rb2 (53...
Ra3+ {with more complications.} 54. Rf3 Ra2 55. Rc3 Rb2 56. h3 Rb6) 54. Rf3 Ra2
55. Rb3 Ra4 (55... Kg7 {is interesting.} 56. Re3 Kg6 57. Re6+ Kh7 58. Re4 Ra3+)
56. h3 Kf6 57. Rb6+ Kg7 58. Kf3 Ra3+ 59. Ke4 $2 {[%mdl 8192] [#]} (59. Kg2 $11)
59... Rxh3 60. Kf5 {Mate.} Ra3 61. Kxg5 Ra5+ 62. Kh4 Rc5 63. Ra6 Rb5 64. Rc6
Ra5 65. Rb6 Rc5 66. Ra6 Rb5 67. Rc6 Ra5 68. Rb6 {[%mdl 32768] Weighted Error
Value: White=0.03/Black=0.02. An unexpected result.} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "15.7"]
[White "Hansen, Eric"]
[Black "Mamedyarov, Shakhriyar"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2606"]
[BlackElo "2782"]
[Annotator "TA"]
[PlyCount "63"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,63,8,26,0,8,-4,34,26,22,17,7,13,11,12,13,16,12,26,39,44,34,22,49,7,15,
4,32,25,54,52,44,39,54,49,36,31,75,52,83,22,22,20,25,13,18,18,53,0,0,0,12,0,0,
0,14,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 d5 6. exd5 {C65: Ruy
Lopez: Berlin Defence (3...Nf6), unusual lines and 4 0-0 Bc5.} Qxd5 7. Bc4 Qd8
(7... Qd6 {is more complex.} 8. O-O Bb6 9. Nbd2 Bf5 10. Qe2 O-O) 8. Nbd2 {
White is slightly better.} O-O {[#]} 9. Qe2 $146 ({Predecessor:} 9. b4 Bd6 10.
O-O h6 11. Re1 Re8 12. a4 a6 13. Ne4 Nxe4 14. dxe4 Qf6 15. Be3 {1-0 (60) So,W 
(2789)-Anand,V (2775) Leuven 2017}) 9... h6 10. O-O Re8 11. Ne4 Bb6 12. a4 a5
13. Be3 Bxe3 14. Nxf6+ Qxf6 15. fxe3 Qe7 16. Nd2 Be6 17. d4 {[#] Black must
now prevent d5.} Rad8 18. Bb5 exd4 19. exd4 Bd5 20. Qf2 Qg5 21. Rae1 {Hoping
for Rxe8+.} Rxe1 22. Rxe1 Nb8 {[%cal Bc6b8,Bb8d7,Bd7f8][%mdl 32]} 23. Ne4 Qg6
24. Bd3 (24. Qf4 $16) 24... Nd7 $11 25. Qh4 Rc8 26. Qe7 Nf8 27. Re2 Qc6 {
Strongly threatening ...Ng6.} 28. Nc5 (28. Bb5 $14 Qe6 29. Nd2 Qxe7 30. Rxe7)
28... b6 {The position is equal.} 29. Bb5 Qg6 {[#]} 30. Bd3 $1 Qc6 31. Bb5 Qg6
32. Bd3 {Weighted Error Value: White=0.11/Black=0.11} 1/2-1/2

[Event "Aimchess US Rapid Prelims 2021"]
[Site "Chess24"]
[Date "2021.08.25"]
[Round "15.8"]
[White "Vachier-Lagrave, Maxime"]
[Black "Dominguez Perez, Leinier"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2751"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "132"]
[EventDate "2021.08.28"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Direct encounter+Number of wins+Koya"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,132,14,0,14,0,0,0,0,-6,0,0,28,29,21,27,31,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-15,-8,-8,-7,-8,0,-13,0,0,0,0,0,-11,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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 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. Rab1 {[#]} Bxd3 $146 {The position is equal.} ({
Predecessor:} 15... Rac8 16. Bb5 Re6 17. Bd6 Rxc3 18. Bd7 Rxd6 19. exd6 Bxd7
20. Rxb7 Be6 21. d7 Bg5 {1/2-1/2 (31) Fier,A (2569)-Vidit,S (2726) Krasnaya
Polyana 2021}) 16. cxd3 Rac8 17. Bd6 ({Avoid the trap} 17. Rxb7 $2 Re7 $19)
17... b6 18. Rb5 Rxc3 19. Rxd5 Rd8 20. f4 Bf8 21. Kf2 Rc6 22. Ke3 Bxd6 23. Rxd6
Rcxd6 24. exd6 Rxd6 $11 {[%mdl 4096] Endgame KR-KR} 25. Rc1 Re6+ 26. Kd2 Kf8
27. g3 b5 28. Rc8+ Kg7 29. d4 Ra6 30. d5 Rxa2+ 31. Kc3 Ra1 {[#] ...Rc1+ is the
strong threat.} ({Don't blunder} 31... Rxh2 $2 32. d6 $18) 32. Kd4 Rd1+ 33. Ke5
b4 (33... a5 {with more complications.} 34. Rb8 a4 35. Rxb5 a3 36. Ra5 Ra1) 34.
Rb8 a5 35. Rb5 Rd2 36. d6 h5 37. Rxa5 {And now Rb5 would win.} b3 38. Rb5 b2
39. h3 $1 Kg8 40. Rb8+ Kg7 41. g4 hxg4 42. hxg4 Re2+ 43. Kd5 Rd2+ 44. Kc6 Rc2+
45. Kd7 Rd2 46. Ke7 Re2+ 47. Kd8 Rd2 48. d7 Rc2 49. Rb6 Rd2 50. f5 (50. Kc7 {
seems wilder.} Rc2+ 51. Kd6 Rd2+ 52. Ke5 Rxd7 53. Rxb2 Re7+ 54. Kd5) 50... gxf5
51. gxf5 Rc2 52. f6+ Kg6 $1 53. Rb3 Kxf6 54. Ke8 Re2+ 55. Kf8 Rd2 56. Rb6+ Ke5
57. Ke7 f5 58. Rxb2 Rxd7+ 59. Kxd7 {KR-KP} f4 60. Re2+ (60. Kc6 {feels hotter.}
f3 61. Kc5 Ke4 62. Kb4 Ke3 63. Rb3+) 60... Kd4 61. Ke6 (61. Re8 {looks sharper.
} f3 62. Rf8 Ke3 63. Rf5 f2 64. Kd8) 61... f3 62. Ra2 (62. Rb2 {is more
complex.} Ke4 63. Kd6 Kf4 64. Kc5 Kg3 65. Rb1) 62... Ke3 63. Ke5 f2 64. Ra1 Ke2
65. Ke4 f1=Q 66. Rxf1 Kxf1 {An uneventful encounter.  Weighted Error Value:
White=0.02/Black=0.01} 1/2-1/2

