[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "11.1"]
[White "Dominguez Perez, Leinier"]
[Black "Dubov, Daniil"]
[Result "0-1"]
[ECO "B60"]
[WhiteElo "2758"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,98,44,35,36,42,51,37,50,54,31,35,50,31,37,32,26,31,29,37,37,27,30,24,
22,44,44,42,32,34,0,0,0,0,0,8,6,6,6,9,-61,85,55,68,-36,-37,-50,-36,-65,-22,
-127,-132,-278,-269,-329,-328,-321,-277,-560,-547,-509,-484,-624,-608,-1425,
-1389,-4134,-4134,-4133,-1502,-29965,-29966,-29967,-29969,-29970,-29971,-29969,
-29972,-29973,-29971,-29971,-29971,-29975,-29976,-29976,-29977,-29973,-29974]} 
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 g6 7. Bxf6 exf6 8.
Bb5 {B60: Sicilian: Richter-Rauzer: Unusual Black 6th moves and 6...Bd7
without 7 Qd2.} Bd7 9. Qd2 Bg7 10. O-O-O {White is slightly better.} O-O $1 11.
Bxc6 bxc6 12. Nb3 Be6 13. Qxd6 Qb6 14. Qc5 f5 15. Qxb6 axb6 {[#]} 16. exf5 $146
({Predecessor:} 16. Nd4 Bxa2 17. b3 b5 18. Rhe1 b4 19. Nce2 c5 20. Nf3 fxe4 21.
Nd2 f5 22. Nf4 {0-1 (32) Halfhide,S (2102)-Bitalzadeh,A (2400) Netherlands 2015
}) 16... Bxf5 17. Nd4 Bd7 18. a3 Rfe8 19. Rd3 h5 20. Rhd1 Rac8 21. f3 c5 22.
Ndb5 Bxb5 23. Nxb5 {Threatens to win with Nd6.} Bh6+ 24. Kb1 {Black must now
prevent Nd6.} Re2 $1 25. Rg1 Be3 $36 {[%mdl 2048] [#] Black is more active.}
26. Rh1 (26. Nc3 $1 $11 Bxg1 27. Nxe2 Bxh2 28. c4) 26... Re8 (26... c4 $15 {
keeps the upper hand.} 27. Rd5 Rxg2) 27. Nd6 Re6 28. Ne4 ({White should try} 
28. Nc4 $14) 28... f5 $15 29. Nc3 Rxg2 30. Re1 f4 31. Nd5 (31. h4 $11) 31...
Kf7 $17 ({Wrong is} 31... Rxh2 $2 {[#]} 32. Nxf4 $1 {[%mdl 512]} Rh1 33. Rxh1
$18) 32. Nxe3 {Loses the game.} (32. h4 $17 {might work better.}) 32... fxe3
$19 ({But not} 32... Rxe3 33. Rdxe3 fxe3 34. h3 $19) 33. Rdxe3 Rxe3 34. Rxe3
Rxh2 $17 {[%mdl 4096] Endgame KR-KR} 35. b4 $2 (35. Re4) 35... cxb4 $19 36.
axb4 Rf2 37. Kb2 h4 38. b5 h3 39. f4 h2 40. Rh3 Kf6 (40... g5 $142 41. fxg5 Kg6
) 41. Rh4 g5 {Black mates.} 42. Rh6+ Kf5 43. fxg5 Kxg5 44. Rh7 Kg4 45. Rh6 Kg3
46. Rg6+ Kf3 47. Rf6+ Kg2 48. Rg6+ Kf1 49. Rh6 Kg1 {Weighted Error Value:
White=0.64/Black=0.17} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "11.2"]
[White "Duda, Jan-Krzysztof"]
[Black "Shankland, Sam"]
[Result "1/2-1/2"]
[ECO "D87"]
[WhiteElo "2743"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "119"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,119,29,40,25,35,2,13,-18,-17,-58,-20,-89,-89,-53,-65,-52,-47,-51,-52,
-54,-49,-27,-32,-93,-75,-102,0,-4,-4,-4,0,-17,208,-60,0,0,0,0,51,51,51,45,51,
51,51,16,51,51,51,51,51,51,51,45,51,0,16,0,51,51,51,51,51,51,51,0,51,0,51,0,51,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3.
Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8. Ne2 c5 9. O-O Nc6 10.
Be3 Bg4 11. f3 Bd7 $1 {[%mdl 4] now scores much better than the old 11...Na5.}
12. Rb1 Qc7 13. Qd2 {D87: Exchange Grünfeld: Classical Line: Variations
without ...cxd4.} Rfd8 {[#]} 14. Bd5 $146 ({Predecessor:} 14. Rfc1 Be8 15. h4
e5 16. Bd5 cxd4 17. cxd4 exd4 18. Nxd4 Qe5 19. Ne2 b6 20. Bf4 Qe7 {1/2-1/2 (40)
Giri,A (2764)-Nepomniachtchi,I (2784) chess24.com INT 2020}) 14... e6 15. Bxc6
Bxc6 16. Rb3 b5 17. Bh6 (17. Rbb1 $11) 17... Bxh6 $1 $17 18. Qxh6 b4 19. Rc1
Ba4 20. Rb2 cxd4 21. cxd4 Qb6 22. Qg5 a5 23. Rc5 (23. Qc5 $15 Qa6 24. Qe5)
23... Bd1 24. Qe5 Qd6 (24... Bxe2 $17 25. Rxe2 a4) 25. Qxd6 $11 Rxd6 26. d5 $1
exd5 27. e5 Rb6 {[#]} (27... Re6 $11 {and Black has nothing to worry.}) 28. Nf4
$2 ({And not} 28. Rxd5 Bxe2 29. Rxe2 a4 $17) (28. Nc3 $1 $18 {[%mdl 512]})
28... b3 (28... d4 $15) 29. Rc1 ({But not} 29. Rxd5 Bc2 $17) 29... Bc2 30. Nxd5
Rb7 (30... Rbb8 $1 $11) 31. Ne3 $36 {[%mdl 2048] White has some pressure.} a4 {
And now ...a3 would win.} 32. Nxc2 {[%mdl 64] axb3 is the strong threat. Pin}
Rc8 33. axb3 axb3 34. f4 Rc3 {[%mdl 64] [#] Pin} 35. Rcb1 $1 {Hoping for Na1.}
Rxc2 (35... bxc2 36. Rxb7) 36. Rxb3 Rxb3 37. Rxb3 {[%mdl 4096] Endgame KR-KR}
h5 38. Re3 Kf8 39. g3 (39. Ra3 $14) 39... Ke7 40. Ra3 Rb2 ({Better is} 40... h4
$11) 41. Ra6 Rc2 42. Rd6 Rb2 43. Rc6 Ra2 44. Rd6 Rb2 $1 45. h3 (45. Rf6 $14)
45... Ra2 (45... Rb3 $11) 46. Kf1 ({White should play} 46. h4 $1 $14) 46... Rb2
(46... Ra3 $11) 47. Ke1 (47. h4 $1 $14) 47... Rb3 $11 {The position is equal.}
48. Kf2 h4 $1 49. g4 Rxh3 50. f5 gxf5 51. gxf5 Ra3 52. f6+ Ke8 53. Kg2 Ra5 54.
e6 fxe6 55. Rxe6+ Kf7 56. Re4 Kxf6 57. Rxh4 Rg5+ 58. Kf3 Kg6 59. Rg4 Rxg4 60.
Kxg4 {Weighted Error Value: White=0.25/Black=0.24} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "11.3"]
[White "Grischuk, Alexander"]
[Black "Bluebaum, Matthias"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2777"]
[BlackElo "2670"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,70,14,22,18,5,6,1,4,4,12,8,10,14,29,20,25,22,18,2,33,27,33,27,32,0,
27,27,35,27,36,36,36,36,35,20,35,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1.
e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 (8.
a3 cxd4 9. Nxd4 Bc5 10. Qd2 O-O 11. h4 Rb8 12. h5 h6 13. g3 Qe7 14. Bg2 Nxd4
15. Bxd4 b5 16. b4 Bxd4 17. Qxd4 f6 18. exf6 Qxf6 19. Ne2 Nb6 20. Qxf6 gxf6 {
1-0 (50) Grischuk,A (2777)-Bluebaum,M (2644) Moscow 2019}) 8... b5 9. a3 Qa5 {
9...g5 is a critical line. C11: French: Classical System: 4 e5 and 4 Bg5 dxe4.}
10. dxc5 Bxc5 11. Bxc5 Nxc5 12. Nd4 Nxd4 13. Qxd4 Na4 14. b4 {[#]} Qc7 $5 $146
{[%mdl 8] An interesting novelty.} (14... Qb6 {with more complications.} 15.
Qxb6 Nxb6 16. a4 d4 17. a5 dxc3 18. axb6 Bb7) ({Predecessor:} 14... Qb6 15.
Qxb6 Nxb6 16. Bd3 Bd7 17. Ne2 Ke7 18. Nd4 g6 19. Kf2 h5 20. g3 Rac8 {1/2-1/2 
(74) Frolyanov,D (2569)-Potkin,V (2599) Sochi 2015}) 15. Nxa4 bxa4 16. c4 dxc4
17. Qxc4 Qxc4 18. Bxc4 Bd7 19. Kf2 Ke7 20. Rhd1 Rhc8 21. Rac1 Bb5 22. Be2 h6
23. Ke3 g5 24. g3 f6 25. Bf3 Rab8 26. Be4 (26. exf6+ {is more complex.} Kxf6
27. Rc5 a5 28. fxg5+ hxg5 29. Rxc8 Rxc8 30. bxa5 Rc3+ 31. Kf2) 26... gxf4+ {
The position is equal.} 27. gxf4 fxe5 28. fxe5 Rxc1 29. Rxc1 $11 {[%mdl 4096]
Endgame KRB-KRB} Rg8 30. Kf4 Kd7 31. h4 Rf8+ 32. Ke3 Rg8 33. Kf4 Rf8+ 34. Ke3
Rg8 35. Kf4 Rf8+ {Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "11.4"]
[White "Giri, Anish"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2764"]
[BlackElo "2781"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,53,36,0,0,0,14,4,21,11,26,17,23,24,31,31,32,17,22,23,18,17,43,25,28,
16,15,25,22,0,0,5,0,0,13,0,0,-4,12,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6
5. O-O Bc5 6. c3 b5 7. Bb3 d6 8. d4 Bb6 9. Be3 O-O {C78: Ruy Lopez:
Archangelsk and Möller Defences.} 10. Nbd2 Re8 11. a4 {axb5 is the strong
threat.} Rb8 12. axb5 axb5 {[#]} 13. Qe2 $146 ({Predecessor:} 13. d5 Ne7 14.
Bxb6 Rxb6 15. Ne1 Ng6 16. Nd3 Bg4 17. f3 Bd7 18. Nb4 Nf4 19. g3 {1/2-1/2 (103)
Samunenkov,I (2142)-Balaji,A (2206) Chess.com INT 2020}) 13... Bd7 14. Ng5 (14.
Qxb5 $2 {[#]} Nxd4 $1 {[%mdl 512]} 15. Bxf7+ Kxf7 $19) 14... Rf8 {[%cal Re5d4]}
15. dxe5 ({But not} 15. Qxb5 $2 exd4 16. Bxf7+ Rxf7 $19) 15... dxe5 16. Ngf3
Qe7 17. Rfd1 Bxe3 18. Qxe3 Rfd8 19. h3 Be8 20. Nf1 Rxd1 21. Rxd1 b4 22. Ba4 {
The position is equal.} bxc3 23. bxc3 Ra8 24. Bb5 Rb8 25. Ba4 Ra8 26. Bb5 Rb8
27. Ba4 {Weighted Error Value: White=0.07/Black=0.05} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "11.5"]
[White "Nepomniachtchi, Ian"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "D41"]
[WhiteElo "2789"]
[BlackElo "2770"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,84,37,42,39,40,0,27,24,28,22,16,6,16,7,11,0,4,0,0,0,0,5,6,2,6,0,10,
18,11,0,0,0,0,3,0,0,0,2,7,0,4,5,3,4,4,3,9,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 cxd4 6.
Qxd4 exd5 7. e4 {[%cal Re4d5] D41: Queen's Gambit Declined: Semi-Tarrasch with
5 cxd5.} dxe4 $1 {[%mdl 4] now scores much better than the old 7...Nc6.} 8.
Qxd8+ Kxd8 9. Ng5 {White has an edge.} Be6 10. g3 Bb4 {[#] The position is
equal.} 11. Bd2 $146 ({Predecessor:} 11. Bg2 Bxc3+ 12. bxc3 Nbd7 13. O-O Nc5
14. Ba3 Rc8 15. Rad1+ Ke8 16. Rd4 b6 17. Rfd1 Bxa2 {1-0 (28) Jean,P (2154)
-Shubin,V (2076) ICCF email 2015}) 11... Ke7 12. Bg2 Nc6 13. Nxe6 Kxe6 14. Nxe4
Nxe4 15. Bxe4 Bxd2+ 16. Kxd2 Rad8+ 17. Ke3 Ne5 18. Rac1 Rd7 19. f4 f5 20. Bxf5+
Kxf5 21. Rc5 {[%mdl 64] [#] Pin} Re8 22. Rf1 b6 23. Rb5 {[%mdl 64] Pin} Rd3+
24. Ke2 Rd7 25. Rf3 Kf6 26. fxe5+ $11 {[%mdl 4096] Endgame KRR-KRR} Ke6 27. Rc3
Kf5 28. Re3 {[#] And now e6+ would win.} Rde7 29. Rf3+ Kg6 30. Re3 Kf5 31. Rf3+
Kg6 32. Kd3 Rxe5 33. Rxe5 Rxe5 {KR-KR} 34. a4 h5 35. b4 Re1 36. Kc4 a6 37. Rd3
{Hoping for Rd6+.} Kf5 38. Rd6 Re4+ 39. Kc3 Re3+ 40. Kc4 Re4+ 41. Kc3 Re3+ 42.
Kc4 Re4+ {Weighted Error Value: White=0.02/Black=0.01} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "11.6"]
[White "Nakamura, Hikaru"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2736"]
[BlackElo "2784"]
[Annotator "TA"]
[PlyCount "231"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,231,25,2,8,0,0,0,0,0,0,0,0,0,0,-23,-16,-71,-75,-80,21,13,24,36,37,20,
24,5,85,95,89,83,92,92,94,93,92,92,91,70,64,64,66,61,61,61,67,66,65,65,69,65,
64,65,77,77,77,79,90,87,95,93,106,110,94,68,68,68,68,60,75,50,75,57,71,71,75,
55,55,37,52,52,66,37,37,37,37,32,32,32,32,35,37,24,24,8,8,8,8,8,8,8,24,8,17,8,
16,8,9,0,8,8,8,8,8,8,9,9,16,19,36,8,8,8,8,8,8,8,8,8,8,0,0,0,8,8,8,8,8,0,8,8,8,
0,8,0,0,0,8,7,8,8,8,8,8,8,8,8,8,0,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a3 e5 {B90:
Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 7. Nf5 $1 {
The main line 7.Nf5 scores better than 7.Nf3.} d5 8. Bg5 {[%cal Rc3d5]} d4 9.
Bxf6 gxf6 10. Nb1 {[%cal Bc3b1,Bb1d2,Bd2e4][%mdl 32]} Bxf5 11. exf5 Qd5 {[#]}
12. Qg4 $146 ({Predecessor:} 12. Qd3 Nd7 13. b4 e4 14. Nc3 Qxf5 15. Qxe4+ Qe5
16. f4 Qxe4+ 17. Nxe4 O-O-O 18. O-O-O {0-1 (37) Saric,I (2667)-Cheparinov,I 
(2670) chess24.com INT 2020}) 12... h5 13. Qh4 (13. Qf3 $11 Qxf3 14. gxf3)
13... Nd7 $17 14. Nd2 Rg8 (14... Rc8 $17 15. Bd3 Qxg2) 15. Qe4 $11 Qxe4+ 16.
Nxe4 Rc8 17. O-O-O h4 18. g3 Bh6+ (18... b5 $11) 19. Kb1 $16 {aiming for Nd6+.}
Ke7 20. Bg2 b6 21. c3 Nc5 22. cxd4 Nxe4 23. Bxe4 a5 24. Rhe1 Rgd8 25. Bc2 Rc4
26. dxe5 Rxd1+ 27. Rxd1 fxe5 $14 {[%mdl 4096] Endgame KRB-KRB} 28. f6+ {
[%mdl 64] [#] Decoy} Kxf6 29. Rd6+ Kg7 30. Rxb6 Bd2 31. Rb5 hxg3 32. hxg3 e4
33. Rb7 e3 34. fxe3 Rg4 35. e4 Rxg3 36. Bb3 Rf3 37. e5 {Threatens to win with
e6.} Kf8 38. Kc2 Be3 39. Bd5 Rf2+ 40. Kc3 Bd2+ 41. Kc4 Bc1 42. b4 axb4 43. axb4
Bb2 44. e6 fxe6 45. Bxe6 Re2 46. Kd5 Rd2+ 47. Kc6 Be5 48. Bd5 Ke8 49. Be4 Rd6+
50. Kc5 Kd8 51. Rh7 Rd7 52. Rh5 Bd4+ 53. Kc4 Be3 54. Bd5 Kc7 55. Re5 Bb6 56.
Kb5 Bd4 57. Rg5 (57. Rf5 {with more complications.} Rd6 58. Bg2 Be3 59. Re5 Bd2
60. Re7+) 57... Rd6 58. Rh5 Be3 59. Kc4 Rh6 60. Re5 Rh4+ 61. Kb5 Bd2 62. Bc4
Bc3 63. Rc5+ Kd6 64. Rc6+ Ke5 65. Ka4 Bd2 {The position is equal.} 66. b5 Rh6
67. Rc5+ Kf4 68. Bd5 Be3 69. Rc4+ Kf5 70. Ka5 Bd2+ 71. Ka4 Be3 72. Re4 Bb6 73.
Re8 Rd6 74. Bc6 Rd4+ 75. Kb3 Rd8 76. Re7 Rd3+ 77. Kc2 Rd6 78. Rb7 Bg1 79. Kc3
Ke5 80. Kb4 Rd2 81. Re7+ Kf6 82. Re8 Rb2+ 83. Kc3 Rb1 84. Re2 (84. Kc2 {
is more complex.} Rb4 85. Bd7 Bd4 86. Kd3 Bb2 87. Re6+) 84... Bb6 85. Bd7 Re1
86. Rh2 Ke7 87. Bf5 Re5 88. Bd3 Kd6 89. Kc4 Rc5+ 90. Kb4 Re5 91. Rh6+ Re6 92.
Rh8 Rf6 93. Be4 (93. Bb1 {keeps more tension.} Rf4+ 94. Kb3 Kc7 95. Rh6 Rd4 96.
Rh7+) 93... Ke5 94. Bc6 Rf4+ 95. Kb3 Kd6 (95... Ba5 {looks sharper.} 96. Rh5+
Kd6 97. Rh6+ Kc5 98. Rh7 Rb4+) 96. Rh6+ (96. Bh1 {is more complex.} Rd4 97. Rh7
Kc5 98. Rh5+ Kd6 99. Bg2) 96... Ke5 97. Bg2 Rf6 98. Rh1 Rg6 99. Re1+ Kd6 100.
Rd1+ Ke5 101. Ba8 Rg3+ 102. Kc2 Rg8 103. Bf3 Rd8 104. Rh1 Rf8 105. Rh3 Rf6 106.
Kb3 Kd6 107. Be4 Ke5 108. Bd3 Kd4 109. Bc4 Ke5 110. Kb4 Rf5 111. Rd3 Rf6 112.
Rd5+ Ke4 113. Rh5 Rd6 114. Rh8 Kd4 115. Rc8 Ke5 116. Rc6 {Weighted Error Value:
White=0.08/Black=0.09} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "11.7"]
[White "Vidit, Santosh Gujrathi"]
[Black "Carlsen, Magnus"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "2726"]
[BlackElo "2862"]
[Annotator "TA"]
[PlyCount "84"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 24,84,45,31,45,34,49,41,43,29,32,21,21,18,21,19,20,17,46,47,44,37,107,
113,141,15,15,15,15,15,15,0,0,-7,-2,-130,-134,-138,-137,-229,-122,-105,-118,
-116,-120,-152,-169,-163,-116,-239,-45,-41,-33,-454,-454,-480,-455,-427,-438,
-768,-733,-640,-633]} 1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 f5 5. Bd3 Nf6 6. O-O
Bd6 7. b3 Qe7 8. Bb2 O-O 9. Qc1 b6 10. Ba3 Bb7 11. Bxd6 Qxd6 12. Qa3 Qxa3 13.
Nxa3 g6 {A84: Dutch Defence: 2 c4 Miscellaneous.} 14. Rfc1 Nbd7 {[#]} 15. cxd5
$146 ({Predecessor:} 15. Nb1 Kf7 16. Nc3 Ke7 17. b4 a5 18. a3 axb4 19. axb4
Rxa1 20. Rxa1 Ra8 21. Rxa8 Bxa8 {1/2-1/2 (44) Santos Latasa,J (2541)-Gonzalez
de la Torre,S (2440) San Sebastian 2016}) 15... exd5 {White is slightly better.
} 16. Nc2 {[%cal Ba3c2,Bc2e1,Be1d3][%mdl 32]} a5 17. a4 Ne4 18. g3 Kg7 19. Nce1
Rfc8 20. Rc2 c5 21. Bb5 Nf8 22. Rac1 Kf6 ({Black should try} 22... cxd4 $1 $14
23. Rc7+ (23. exd4 Rxc2 24. Rxc2 Rc8 $11) 23... Kf6) 23. Nd3 $1 $16 cxd4 24.
Nxd4 (24. Bc6 $1 $16 {[%cal Rc6b7]} Rab8 25. Bxb7 (25. exd4 Ne6 $11) 25... Rxc2
26. Rxc2 Rxb7 27. Rc6+ (27. exd4 Ne6 $11) (27. Nxd4 Nd7 $16) 27... Kf7 28. Nxd4
) 24... Rxc2 $1 $11 25. Rxc2 {Strongly threatening Bc6.} Rc8 26. Rxc8 Bxc8 27.
Bc6 Nc3 28. b4 Ne6 29. Nb3 (29. bxa5 $11 {remains equal.} Nxd4 30. exd4 Ne2+
31. Kf1 Nxd4 32. Bxd5 bxa5 33. Ke1) 29... Nd8 $17 30. Ba8 Ba6 $1 {[%cal Ra6d3]}
31. Nf4 (31. Nbc1 $17) 31... axb4 ({Better is} 31... Bc4 $19 32. bxa5 Bxb3 33.
axb6 Nxa4 34. Nxd5+ Bxd5 35. Bxd5 Nxb6) 32. Nxd5+ Nxd5 33. Bxd5 $19 {[%mdl
4096] Endgame KBN-KBN} Ne6 34. a5 bxa5 35. Nxa5 {[#]} Nc5 $1 36. f4 {[#]} (36.
f3 $17) 36... Bb5 $2 (36... Bc8 $1 $19 {Hoping for ...Be6.} 37. Kf2 Be6 38.
Bxe6 Kxe6) 37. Kf2 $15 Bd7 38. e4 $2 {[%mdl 8192]} (38. Ke2 $15) 38... fxe4 $19
{Black is clearly winning.} 39. Ke3 Be6 40. Bxe6 Kxe6 ({Inferior is} 40... Nxe6
41. Kxe4 g5 42. Nb3 $11) 41. Kd4 {[#]} (41. Nc4 $142 b3 42. Kd2) 41... b3 $1
42. Nc4 Na4 {Weighted Error Value: White=0.62/Black=0.16} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "11.8"]
[White "Radjabov, Teimour"]
[Black "Ding, Liren"]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "2765"]
[BlackElo "2791"]
[Annotator "TA"]
[PlyCount "79"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,79,0,0,0,0,0,0,0,0,0,0,0,3,-4,-6,-14,0,0,0,0,0,0,0,0,0,0,0,0,0,-6,
-14,-9,-7,-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]} 1. d4 Nf6 2. c4
e6 3. Nf3 b6 4. g3 Ba6 5. Qa4 Bb7 6. Bg2 c5 7. O-O cxd4 8. Nxd4 Bxg2 9. Kxg2
Qc7 10. Nc3 Be7 11. Rd1 O-O 12. Bf4 Qb7+ {The position is equal.} 13. Kg1 {
E15: Queen's Indian: 4 g3 sidelines, 4 g3 Ba6 and 4 g3 Bb7 early deviations.}
a6 14. Rac1 Rc8 15. Nf3 Nc6 16. Bg5 Rc7 {[#]} 17. Qc2 $146 ({Predecessor:} 17.
Bf4) 17... h6 18. Bf4 Rcc8 19. Ne4 d5 20. Nxf6+ Bxf6 21. cxd5 Nb4 22. Qb3 Nxd5
23. Be5 Be7 24. Bd4 b5 25. Ne5 Bf6 26. Nf3 Bxd4 27. Nxd4 Rxc1 28. Rxc1 Rc8 29.
Rc2 Nb6 30. Qf3 Nd5 31. Qe4 Qd7 32. e3 Rxc2 33. Qxc2 Nb4 34. Qb3 Nc6 35. Nxc6
Qxc6 36. Qb4 Qc1+ 37. Kg2 Qc6+ 38. Kg1 Qc1+ 39. Kg2 Qc6+ 40. Kg1 {An
uneventful encounter.  Weighted Error Value: White=0.00/Black=0.01} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "12.1"]
[White "Dubov, Daniil"]
[Black "Ding, Liren"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2710"]
[BlackElo "2791"]
[Annotator "TA"]
[PlyCount "35"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,35,0,-29,0,4,4,-4,26,0,0,0,5,0,0,0,54,48,50,45,226,218,214,233,216,
204,496,489]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Bb4+ 5. Nbd2 (5. Bd2 Be7 6.
Bg2 O-O 7. Qc2 c6 8. h4 Nbd7 9. Nc3 dxc4 10. Rd1 b5 11. Ne5 Nxe5 12. dxe5 Nd5
13. Ne4 f5 14. exf6 gxf6 15. b3 cxb3 16. axb3 Qb6 17. O-O a5 {1-0 (47) Dubov,D
(2699)-Ding,L (2791) chess24.com INT 2020}) 5... dxc4 6. Bg2 a5 {E04: Open
Catalan: 5 Nf3.} (6... b5 {looks sharper.} 7. Ne5 Nd5 8. a3 Be7 9. O-O O-O) 7.
a3 $1 {[%cal Ba2a3,Ba3a4,Ba4b5][%mdl 4] is more profitable than 7.0-0 at the
moment.} Bxd2+ 8. Bxd2 O-O {The position is equal.} 9. Qc2 b5 10. a4 c6 11. h4
{[#]} Nbd7 $146 ({Predecessor:} 11... Na6 12. Ne5 Nb4 13. Bxb4 axb4 14. Nxc6
Qd6 15. Ne7+ Qxe7 16. Bxa8 b3 17. Qc3 Qa7 {1/2-1/2 (31) Xu,X (2581)-Wei,Y 
(2734) Hangzhou 2018}) 12. h5 h6 (12... Bb7 $11) 13. g4 $14 Nxg4 14. axb5 Bb7
$2 {[#] Loses the game.} (14... Qb6 $14) 15. Nh2 $1 $18 Nxf2 16. Kxf2 Qh4+ 17.
Kf1 Qf6+ $2 (17... Rfc8 18. Nf3 Qe7 19. bxc6 (19. Rxa5 Rxa5 20. Bxa5 cxb5 $14)
(19. Qxc4 cxb5 20. Qxb5 Nf6 $18) 19... Bxc6) 18. Bf3 {Weighted Error Value:
White=0.04/Black=0.59} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "12.2"]
[White "Carlsen, Magnus"]
[Black "Radjabov, Teimour"]
[Result "1/2-1/2"]
[ECO "E58"]
[WhiteElo "2862"]
[BlackElo "2765"]
[Annotator "TA"]
[PlyCount "112"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,112,0,0,0,0,0,0,0,0,0,0,0,0,0,-13,-43,-42,-118,-62,-63,-43,-41,-40,
-41,0,0,0,0,0,0,0,0,0,-3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,10,-6,-5,-5,-4,-3,
-3,-8,-8,-8,0,-8,0,0,0,0,0,-4,-2,-3,0,-8,-8,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,-7,0,
0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 d5 6. a3 Bxc3+ 7. bxc3
Nc6 8. Bd3 O-O 9. O-O b6 10. cxd5 exd5 11. Nd2 {E58: Nimzo-Indian: Rubinstein:
Main Line: 7...Nc6 8 a3 Bxc3.} Re8 12. Re1 Bg4 13. f3 Bh5 {[#]} 14. Bb2 $146 ({
Predecessor:} 14. Nf1 Bg6 15. Ra2 Qc7 16. Ng3 Rac8 17. Rd2 Bxd3 18. Rxd3 h5 19.
e4 cxd4 20. cxd4 {1-0 (39) Veisi,B (2203)-Rastbod,A (2296) Hamedan 2017}) 14...
Bg6 15. Bb5 Re6 16. c4 {And now e4! would win.} (16. e4 {seems wilder.} cxd4
17. cxd4 dxe4 18. Nxe4 Nd5 19. Qa4) 16... cxd4 17. Bxc6 (17. exd4 $5 {[%cal
Re1e6]} Na5 18. Rxe6 fxe6 19. cxd5 $11) 17... Rxc6 18. cxd5 {[#]} (18. Qa4 $1
$15 Rac8 19. cxd5) 18... Nxd5 ({Black should play} 18... Bc2 $1 $17 {[%cal
Rc2d1][%mdl 512]} 19. dxc6 Bxd1 20. Raxd1 Qd5) 19. Bxd4 $15 Nc3 20. Qb3 Rac8
21. Nf1 Qd5 (21... h5 {looks sharper.} 22. Kh1 Bd3 23. Rac1 Qg5 24. e4 Qb5) 22.
Qxd5 {The position is equal.} Nxd5 23. e4 Nf4 24. Ne3 f6 25. Red1 Rd8 {Hoping
for ...Rxd4!} 26. Bb2 Rcd6 27. Rxd6 Rxd6 28. Rd1 Rxd1+ 29. Nxd1 $11 {[%mdl
4096] Endgame KBN-KBN} Kf7 30. Ne3 Ke6 31. g3 Nd3 32. Bc3 Kd6 33. Kf1 Kc6 34.
Ke2 Nc5 35. g4 a5 36. e5 fxe5 37. Bxe5 Bd3+ 38. Kd2 g6 39. Kc3 Be2 40. f4 b5
41. f5 gxf5 42. gxf5 b4+ 43. axb4 axb4+ 44. Kd2 Bh5 45. Bb2 Kd6 46. f6 Ke6 47.
Nc2 Ne4+ 48. Ke3 Nxf6 49. Bxf6 b3 50. Nd4+ Kxf6 51. Nxb3 {KB-KN} Bf7 52. Nd4
Ke5 53. Nf3+ Kf5 54. Nd4+ Ke5 55. Nf3+ Kf5 56. Nd4+ Ke5 {Weighted Error Value:
White=0.04/Black=0.04} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "12.3"]
[White "Vachier-Lagrave, Maxime"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2784"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,98,18,18,20,0,10,0,0,0,0,0,0,0,0,-9,0,-4,0,-11,-12,-22,-12,-29,0,-4,
0,0,19,12,8,18,29,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,14,47,14,13,12,11,8,8,8,8,8,
8,8,8,0,0,0,0,0,0,0,0,0,8,8,8,8,8,8,8,8,8,0,0,0,8,0,8,0,8]} 1. e4 e5 2. Nf3 Nc6
3. Bb5 a6 4. Ba4 Nf6 5. Nc3 b5 6. Bb3 Bc5 7. d3 h6 {C77: Ruy Lopez: 3...a6 4
Ba4 Nf6, unusual lines.} 8. a4 Rb8 9. axb5 axb5 10. Nd5 d6 11. c3 Nxd5 12. Bxd5
Ne7 13. Bb3 Ng6 14. O-O O-O 15. d4 Bb6 16. Be3 Qf6 17. h3 Bb7 18. Bc2 Rfe8 19.
Re1 {[#]} Re7 $146 ({Predecessor:} 19... Nf4 20. dxe5 dxe5 21. Bxf4 Qxf4 22.
Qd7 Qf6 23. Rad1 Red8 24. Qg4 Rd6 25. Rxd6 cxd6 {1-0 (58) Safarli,E (2681)
-Brown,M (2524) chess.com INT 2019}) 20. Qd2 exd4 21. Bxd4 Bxd4 22. cxd4 Rbe8 {
[%cal Rb7e4]} 23. d5 c6 24. dxc6 Bxc6 25. Ra6 Bxe4 26. Bxe4 Rxe4 27. Rxe4 Rxe4
28. Rxd6 Qf4 29. Qd3 Rc4 {[#] ...Rc1+ is the strong threat.} 30. g3 Qe4 (30...
Qc1+ {keeps more tension.} 31. Kg2 Qxb2 32. Rd8+ Kh7 33. Qf5 Qf6) 31. Rd8+ (31.
Qxe4 {seems wilder.} Rxe4 32. Rd4 Re7 33. Rd5 b4 34. Rb5) 31... Kh7 {The
position is equal.} 32. Qxe4 Rxe4 $11 {[%mdl 4096] Endgame KRN-KRN} 33. Rd4 Re2
34. Rb4 Ne5 {[#]} 35. Kf1 $1 Rxf2+ {[%mdl 64] Decoy} 36. Kxf2 Nd3+ {[%mdl 64]
Double Attack} 37. Ke2 Nxb4 {KN-KN} 38. Nd4 g5 39. Nxb5 f5 40. Nc3 Kg6 41. Ke3
f4+ 42. gxf4 gxf4+ 43. Ke4 Kg5 44. Ne2 Kh4 45. Nxf4 Kg3 46. Nd3 Nc2 47. Nf4 Nb4
48. Kf5 Nc2 49. Ke4 Nb4 {A rather calm draw.  Weighted Error Value: White=0.05/
Black=0.04} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "12.4"]
[White "So, Wesley"]
[Black "Nakamura, Hikaru"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2770"]
[BlackElo "2736"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,54,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 d5 6. e5 Ne4
7. Bd3 c5 {The position is equal.} 8. Nf3 {E32: Nimzo-Indian: Classical (4 Qc2)
: 4...0-0.} cxd4 9. Nxd4 Nd7 10. Bf4 Qh4 11. g3 Qh5 12. O-O g5 13. cxd5 Bxc3
14. bxc3 exd5 15. Bxe4 dxe4 16. e6 gxf4 17. exd7 Bxd7 18. Qxe4 {[%mdl 64] [#]
Double Attack} fxg3 19. fxg3 b6 20. Nf5 {Strongly threatening Ne7+.} Rae8 21.
Qd5 Bxf5 ({Avoid the trap} 21... Re2 $2 {[#]} 22. Ne7+ $1 {[%mdl 512]} Rxe7 23.
Qxh5 $18) 22. Rxf5 Qe2 23. Raf1 {And now Rg5+ would win.} Qe3+ 24. R1f2 {
[%cal Rf5f7]} Qe1+ {[#]} 25. Rf1 $146 ({Predecessor:} 25. Kg2 Qe4+ 26. Qxe4
Rxe4 27. Rg5+ Kh8 28. Rgf5 Kg8 29. Rg5+ Kh8 30. Rgf5 Kg8 {1/2-1/2 (30) So,W 
(2770)-Nakamura,H (2736) Lichess.org INT 2020}) 25... Qe3+ 26. R1f2 {[%cal
Rf5f7]} Qe1+ 27. Rf1 Qe3+ {Not much happened in this game.  Weighted Error
Value: White=0.00/Black=0.00} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "12.5"]
[White "Aronian, Levon"]
[Black "Nepomniachtchi, Ian"]
[Result "1-0"]
[ECO "D80"]
[WhiteElo "2781"]
[BlackElo "2789"]
[Annotator "TA"]
[PlyCount "53"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,53,14,12,25,0,2,1,10,10,10,7,19,22,15,13,31,25,23,13,27,24,28,26,59,
72,79,74,97,100,97,97,110,102,115,102,106,102,227,192,357,345,333,338,305,335]
} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Bf4 Nxc3 6. bxc3 c5 {D80:
Grünfeld: Unusual White 4th moves and 4 Bg5.} 7. cxd5 Qxd5 8. e3 cxd4 {The
position is equal.} 9. Qxd4 Qxd4 10. cxd4 Nc6 11. Nf3 Bg7 {[#]} 12. Bd3 $146 ({
Predecessor:} 12. Bb5 Bd7 13. O-O O-O 14. Rab1 Bf5 15. Rb2 Na5 16. Bc7 b6 17.
Ba6 Bc8 18. Bxc8 Rfxc8 19. Rc1 {1/2-1/2 (30) Maric,A (2457)-Zhukova,N (2441)
Leon 2001}) 12... O-O 13. Be4 Bd7 14. Kd2 Rac8 15. Rhc1 b6 16. Rc3 Na5 17. Rac1
$36 {[%mdl 2048] Black is under strong pressure.} Rxc3 18. Rxc3 Rc8 19. Rxc8+
Bxc8 20. Bb8 Nc4+ 21. Kc3 Nd6 22. Bc6 a6 23. a4 Bf5 {[#] This move loses the
game for Black.} (23... f5 $16) 24. Nd2 $1 $18 Bf8 $2 (24... Kf8 25. Bxd6 exd6)
25. e4 Bc8 26. Bxd6 exd6 27. Nc4 {Weighted Error Value: White=0.03/Black=0.24}
1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "12.6"]
[White "Bluebaum, Matthias"]
[Black "Giri, Anish"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2670"]
[BlackElo "2764"]
[Annotator "TA"]
[PlyCount "98"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,98,0,43,41,41,31,31,25,31,39,49,1,14,0,0,0,0,0,0,0,11,11,53,46,81,-8,
-1,-8,0,-108,0,-91,-121,-118,-128,-137,-49,-176,-133,-129,-124,-133,-75,-148,
-148,-197,-130,-130,-143,-133,-139,-187,-188,-260,-243,-312,-317,-295,-281,
-271,-258,-264,-260,-265,-236,-247,0,-250,-246,-262,-254,-294,-293,-360,-340,
-437,-458,-445,-354,-691,-691,-681,-592,-12831,-12831,-12831,-12832,-12834,
-12835,-12835,-12835]} 1. d4 Nf6 2. Nf3 d5 3. Bf4 Bf5 4. c4 e6 5. Qb3 dxc4 6.
Qxb7 {[#] D02: 1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3
Bf4.} Be4 $146 ({Predecessor:} 6... Nbd7 7. Bxc7 Qc8 8. Qxc8+ Rxc8 9. Ba5 Be7
10. Nbd2 Be4 11. Rc1 Bd5 12. h3 O-O {1/2-1/2 (44) Kadukowski,P (1813)-Malek,P
Poland 2011}) 7. Qxc7 Bb4+ 8. Nbd2 {Qxd8+ is the strong threat.White is
slightly better.} Qxc7 9. Bxc7 Ke7 10. a3 {[%cal Ba2a3,Ba3b4,Bb4b5][%mdl 32]}
c3 $1 {[%cal Rc3b2]} 11. axb4 cxb2 12. Ra2 Rc8 13. Rxb2 Rxc7 $40 {[%cal Rc7c1]
[%mdl 128] Black attacks.} 14. Nb3 Nc6 {[%cal Bb8c6,Bc6b4,Bb4d3][%mdl 32]} 15.
b5 Nb4 (15... a5 $5 {[%cal Ra5a4]}) 16. e3 Nd7 17. Be2 (17. Kd2 $16) 17... Nd3+
$11 18. Bxd3 Bxd3 19. Na5 (19. Kd2 $11 Bxb5 20. Ra1) 19... Bxb5 20. Rxb5 (20.
Kd2 $11 {keeps the balance.} Rb8 21. Rc1 Rxc1 22. Kxc1) 20... Rc1+ $17 21. Ke2
Rxh1 22. Rb7 {[#]} f6 (22... Ke8 $1 $17 {Threatens to win with ...Ra1.} 23. Nc4
f6 24. Nd6+ Ke7) 23. Ne1 (23. Nd2 $1 $15) 23... Kd8 ({Don't do} 23... Rxh2 24.
Nd3 $17) 24. h3 Kc8 25. Rb2 Nb6 (25... g5 $142 26. Nd3 Kd8) 26. Rc2+ (26. Nd3
$142) 26... Kd7 27. Nb7 Rc8 ({Black should try} 27... Nd5 $19 28. Nc5+ Kd6) 28.
Nc5+ {[#]} Ke7 $1 29. Ra2 Rc7 30. Ra6 e5 31. f3 (31. Ne4 {keeps fighting.})
31... Nd5 32. Ra3 Kf7 {Hoping for ...exd4.} 33. Ned3 exd4 34. exd4 Rb1 35. Kf2
g5 36. Kg3 Ne3 37. Kf2 Nd5 38. Kg3 Rd1 39. h4 h6 40. hxg5 hxg5 41. Ra2 Re7 42.
Kf2 Nc3 43. Rc2 {[#]} Na4 {[%mdl 512]} 44. g4 $2 (44. Ra2 Nxc5 45. Nxc5) (44.
Nxa4 Rxd3) 44... Nxc5 $19 {Black is clearly winning.} 45. Nxc5 Rxd4 46. Ne4
Rdxe4 47. fxe4 Rxe4 48. Kf3 Rf4+ 49. Kg3 a5 {Weighted Error Value: White=0.51/
Black=0.23} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "12.7"]
[White "Shankland, Sam"]
[Black "Grischuk, Alexander"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2691"]
[BlackElo "2777"]
[Annotator "TA"]
[PlyCount "145"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 20,145,19,11,20,15,36,7,47,44,43,44,112,114,131,105,109,68,128,127,122,
120,112,92,88,97,100,103,114,102,108,114,114,104,94,123,138,139,127,78,164,125,
124,143,131,18,127,94,74,0,127,134,111,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5.
Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Ne7 9. c4 Ng6 10. Qa4 Bd7 11. Qb4 Qb8 {
11...Bf5 is more advanced technology. B33: Sicilian: Pelikan and Sveshnikov
Variations.} 12. h4 h5 13. Be2 Be7 (13... a6 $5 {[%cal Ra6b5]} 14. Nc3 f5 $14)
14. g3 {[#]} e4 $146 ({Predecessor:} 14... f5 15. Bg5 a6 16. Nc3 e4 17. f4 exf3
18. Bxf3 Ne5 19. Be2 Bxg5 20. hxg5 g6 {1-0 (35) Gavilan Diaz,M (2334)-Gonzalez
Gonzalez,A (2183) Marbella 2018}) 15. Bg5 f5 (15... a6 $14 16. Nd4 f6) 16.
O-O-O $16 Bxb5 17. Qxb5+ Kf7 18. Kb1 (18. Qd7 $6 Qc8 $11) 18... b6 {[#]} (18...
Qc7 $14) 19. Bxe7 $1 ({Of course not} 19. Qd7 $6 Qc8 $11) 19... Kxe7 20. f3 Qe8
21. fxe4 Qxb5 22. cxb5 f4 23. Rhg1 Raf8 {and if ...f3 works, Black does fine.}
24. gxf4 Nxf4 25. Bf3 ({Don't play} 25. Rxg7+ $6 Kf6 $11) 25... Rf7 26. e5 dxe5
27. d6+ Kf6 28. Bc6 Rd8 29. d7 Re7 (29... Ne6 $16 {was worth a try.}) 30. Kc2
g6 31. Rg3 Re6 32. Ra3 (32. Rd2 $16) 32... a5 (32... Ne2 $1 $11 {remains equal.
}) 33. b4 axb4 {[#]} 34. Ra6 ({Better is} 34. Re3 $1 $16) 34... Ke7 (34... Ne2
$1 $11) 35. Rxb6 e4 36. Ra6 (36. Rd4 $16) 36... e3 $11 {The position is equal.}
37. Ra4 e2 38. Re1 Rxd7 39. Bxd7 Kxd7 40. Rxb4 {[%mdl 4096] Endgame KRR-KRN}
Ng2 41. Rd4+ Kc7 42. Kd2 Nxe1 43. Kxe1 {KR-KR} Kb6 44. Rb4 Re5 45. a4 Ka5 46.
Rb2 Kxa4 47. b6 Re8 $1 48. b7 Rb8 49. Kxe2 Ka5 50. Ke3 {Hoping for Kd4.} Ka6
51. Kf4 {Kg5 is the strong threat.} Rxb7 52. Ra2+ Kb6 53. Kg5 Kc7 54. Kxg6 Kd7
55. Ra5 ({But not} 55. Kxh5 $6 Ke8 $16) 55... Rb4 56. Rxh5 Ke7 57. Rh7+ Ke6 58.
h5 Rg4+ 59. Kh6 Kf6 60. Ra7 Rh4 61. Ra5 Kf7 62. Kh7 (62. Rg5 {is more complex.}
Kf6 63. Rg3 Kf5 64. Rg7 Ra4 65. Rg1) 62... Rg4 63. Rf5+ (63. Ra7+ {looks
sharper.} Kf6 64. Ra6+ Kg5 65. Ra5+ Kf6 66. Ra8) 63... Ke7 64. Kh6 {aiming for
Kh7.} Rg1 65. Rf2 Rg3 66. Kh7 {And now h6 would win.} Rg5 67. h6 {Black must
now prevent Rf3.} (67. Rh2 {seems wilder.} Kf7 68. Kh6 Rf5 69. Rg2 Kf8 70. Rg3)
67... Rg1 68. Ra2 Kf7 69. Ra7+ Kf8 70. Rg7 Rf1 71. Rg4 Kf7 72. Rg3 Rf2 73. Rg4
{Weighted Error Value: White=0.14/Black=0.13} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "12.8"]
[White "Dominguez Perez, Leinier"]
[Black "Duda, Jan-Krzysztof"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2758"]
[BlackElo "2743"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 15,55,29,27,13,8,12,18,8,29,23,43,33,33,30,31,17,37,11,8,8,52,45,171,
165,242,249,239,227,355,351,494,490,489,482,596,486,944,915,1739,853,786,566]} 
1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bf5 7. O-O Be7 8.
Re1 O-O 9. Nbd2 {[%cal Rd2e4,Bb1d2,Bd2f1,Bf1e3,Be3f5][%mdl 32] C42: Petroff
Defence: 3 Nxe5 and unusual White 3rd moves.} Nd6 $1 10. Nf1 Bxd3 11. Qxd3 {
The position is equal.} Nd7 12. Bf4 Re8 {[#]} 13. Qb3 $5 $146 {[%mdl 8] An
interesting novelty.} ({Predecessor:} 13. Re2 Bf8 14. Ne3 c6 15. Rae1 Ne4 16.
Ng4 Bd6 17. Bxd6 Nxd6 18. Rxe8+ Nxe8 19. Qa3 Nf8 20. h4 Nd6 21. h5 h6 22. Qe3
Qd7 23. Qf4 Re8 24. Rxe8 {1/2-1/2 (24) Adams,M (2736)-Li,C (2735) Geneva 2017})
13... Nb6 14. Ne3 $36 {[%mdl 2048] White is pushing.} c6 15. a4 a5 16. h4 Ndc4
17. Nf5 Bf8 18. h5 Qd7 {[#] A mistake that costs the game.} ({Better is} 18...
Re4 $14 19. Rxe4 dxe4) 19. N3h4 $1 $18 Re6 {[#]} (19... g6 {was necessary.})
20. Qg3 $1 {Hoping for Nxg7!} Rae8 21. Rxe6 Qxe6 (21... Rxe6 {was called for.}
22. Nxg7 (22. b3 Nd6 $18) 22... Bxg7) 22. b3 Nb2 (22... g6 $142 23. bxc4 Nxc4
24. Nh6+ Bxh6) 23. Rb1 {White is clearly winning.} g6 24. Rxb2 ({Don't take} 
24. hxg6 hxg6 25. Rxb2 Qe1+ 26. Kh2 Qe6 $18) 24... Qe1+ 25. Kh2 {[%cal Rh5g6]}
Qd1 (25... Qe6 $142 26. c4 Ra8 27. hxg6 fxg6) 26. hxg6 Re1 27. gxf7+ Kxf7 28.
Qf3 {Weighted Error Value: White=0.05/Black=0.45} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "13.1"]
[White "Duda, Jan-Krzysztof"]
[Black "Dubov, Daniil"]
[Result "1-0"]
[ECO "D48"]
[WhiteElo "2743"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,111,0,0,31,28,36,0,0,0,94,111,112,107,102,105,106,99,94,0,0,0,87,80,
76,52,54,53,45,25,100,36,10,-87,0,0,0,0,0,-38,0,0,0,0,453,435,1065,1065,810,
360,370,370,362,361,339,325,340,323,550,389,887,887,794,479,664,602,667,0,0,0,
0,0,0,0,0,0,976,935,837,671,7546,0,0,0,7634,6679,8306,7056,6130,6127,6079,1469]
} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8.
Bd3 Bb7 9. O-O a6 10. e4 c5 11. e5 Nd5 12. Ng5 Nxc3 {D48: Semi-Slav: Meran
System: 7...b5 8 Bd3 a6.} 13. bxc3 Be7 {[#]} 14. Nxe6 $146 ({Predecessor:} 14.
f4 Bxg5 15. fxg5 Nb6 16. Rf2 Na4 17. Qh5 g6 18. Qh6 Qd5 19. Bd2 O-O-O 20. Bf1 {
1-0 (46) Kozul,Z (2595)-Gurevich,D (2575) Biel 1993}) 14... fxe6 {The position
is equal.} 15. Qh5+ $40 {[%mdl 128] White attacks.} g6 (15... Kf8 $11 {remains
equal.} 16. f4 Kg8) 16. Bxg6+ $1 $16 hxg6 17. Qxg6+ (17. Qxh8+ $6 Nf8 $11)
17... Kf8 18. Bh6+ Rxh6 19. Qxh6+ Kg8 20. Qg6+ Kh8 21. Qh6+ Kg8 22. Qxe6+ Kg7
23. Rad1 {[%mdl 1024] White has strong compensation.} Nf8 $1 {[%cal Rf8e6]} 24.
Qg4+ Kh8 $1 25. d5 {Threatens to win with d6.} Nh7 (25... Bxd5 $2 26. e6 $18) (
25... Qd7 $1 $11 26. Qxd7 Nxd7) 26. d6 (26. Rfe1 $16) 26... Bh4 27. e6 (27. f4
$11) 27... Qf6 ({Black should try} 27... Qg5 $1 $17 {[%cal Rg5g4]} 28. Qxg5
Nxg5) 28. e7 $11 Bc6 29. g3 Rg8 30. Qh5 {Black must now prevent Rfe1.} Qxc3 {
[%cal Rh4g3] Strongly threatening ...Bxg3!} 31. Rd5 Bxd5 32. Qxd5 Nf6 {[%mdl
8192] [#]} (32... Bxe7 $11 33. dxe7 Re8) 33. Qxg8+ $3 $18 {[%mdl 576] Remove
Defender, Deflection, Promotion} Nxg8 (33... Kxg8 $142 34. d7 {[%mdl 64]
Deflection, Decoy, Promotion} Nxd7 35. e8=Q+ {[%mdl 64] Double Attack} Nf8 36.
gxh4 Qc4) 34. e8=Q Bf6 35. Qh5+ (35. Rd1 $142) 35... Kg7 36. Rd1 Nh6 37. d7 Nf7
38. Qg4+ Kf8 39. Qe6 c4 $2 (39... Be7 40. Qxa6 Qc2) 40. Rd5 b4 $2 (40... Nd8
41. Qe8+ (41. Qxa6 Qe1+ 42. Kg2 Qe4+ 43. Kf1 Qxd5 $17) 41... Kg7) 41. Rf5 Kg7
42. Kg2 (42. Qxf7+ Kxf7 43. d8=Q Qe1+ 44. Kg2 Qe4+ 45. Kg1 Qb1+ 46. Kg2 Qe4+
47. Kg1 Qxf5 $17) 42... b3 43. axb3 cxb3 {Threatening ...b2.} 44. Qxa6 $2 (44.
Rf4 $18) 44... b2 $11 45. Qb6 Bd8 46. Rxf7+ Kxf7 47. Qxd8 {[%mdl 4096] Endgame
White wants to mate with Qe8+. KQ-KQ} Qc6+ 48. f3 {Qe8+ is the strong threat.}
b1=Q $4 {[%mdl 8192]} (48... Qc2+ $11 49. Kh3 Qh7+ 50. Kg2 Qc2+ 51. Kh3 Qh7+
52. Kg2 Qc2+) 49. Qe8+ $1 $18 Kg7 50. Qe5+ Kh7 {[#]} 51. Qh5+ $2 (51. d8=Q $1
$18 {[%cal Rd8e7] Qde7+ would kill now.} Qa2+ 52. Kh3 Qce6+ 53. Qxe6 Qxe6+ 54.
Kh4) 51... Kg7 $1 $11 {( -> ...Qcc2+)} 52. Qg4+ Kh6 $2 {[%mdl 8192]} (52... Kh7
$11 53. Qh5+ Kg7 54. Qg5+ (54. d8=Q Qcc2+ 55. Kh3 Qf1+ 56. Kg4 Qfc4+ 57. Kh3
Qf1+ 58. Kg4 Qfc4+ 59. Kh3 Qf1+ $11) 54... Kh7 55. Qh4+ Kg6 56. Qg4+ Kh7 57.
Qh5+) 53. Qf4+ $18 {White is clearly winning.} (53. d8=Q {leads to mate.} Qcc2+
54. Qd2+ Qxd2+ 55. Kh3 Qf1+ 56. Kh4 Qxh2+ 57. Qh3 Qhxh3#) 53... Kh5 54. g4+ Kg6
55. d8=Q {[%cal Rd8g8]} Qcc2+ 56. Qdd2 {Weighted Error Value: White=0.63/
Black=0.56} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "13.2"]
[White "Grischuk, Alexander"]
[Black "Dominguez Perez, Leinier"]
[Result "0-1"]
[ECO "C28"]
[WhiteElo "2777"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,76,0,-14,-19,12,19,10,-24,-25,-27,-20,-113,-110,-119,-110,-136,-136,
-127,-130,-137,-133,-212,-221,-219,-205,-214,-214,-225,-222,-222,-223,-228,
-230,-225,-232,-231,-224,-225,-229,-234,-231,-229,-234,-241,-241,-363,-353,
-352,-354,-332,-286,-272,-266,-264,-252,-320,-302,-352,-351,-348,-343,-397,
-387,-397,-290,-275,-250,-576,-333]} 1. e4 e5 2. Bc4 Nf6 3. Nc3 Nc6 4. d3 Bc5
5. f4 O-O 6. Nf3 {C28: Vienna Game: 2...Nf6 3 Bc4 Nc6.} exf4 7. Bxf4 d6 8. Na4
{[#]The position is equal.} d5 $1 9. Nxc5 {And now exd5 would win.} dxc4 {[#]}
10. Qd2 $146 ({Reject} 10. dxc4 Qe7 $17) (10. O-O $11 {remains equal.}) ({
Predecessor:} 10. O-O Qe7 11. Na4 cxd3 12. cxd3 Bg4 13. h3 Bxf3 14. Qxf3 Qb4
15. b3 Nd4 16. Qf2 {0-1 (34) Valcarcel,V (1856)-Carvalho,G (2198)
Florianopolis 2020}) 10... Qe7 $17 {Black keeps a firm grip on the game.} 11.
Na4 cxd3 12. cxd3 Nxe4 13. dxe4 Qxe4+ {[%mdl 64] [#] Double Attack} 14. Qe3 Re8
15. Nc3 (15. Kf2 $17 Qc2+ 16. Qd2 Qxa4 17. Rhe1) 15... Qxe3+ $19 16. Bxe3 Rxe3+
17. Kf2 Rd3 18. Rhd1 Rxd1 19. Rxd1 Be6 20. Nb5 Rc8 21. a3 a6 22. Nc3 Rd8 23.
Rc1 Bd5 24. Ne1 Kf8 25. b4 Bc4 26. Nf3 Rd3 27. Ne4 (27. Rc2 $142) 27... Bd5 28.
Nc5 Rxa3 29. Nxb7 Bxf3 30. gxf3 {[%mdl 4096] Endgame KRN-KRN} Ne5 {Strongly
threatening ...Nd3+.} 31. Rxc7 Rxf3+ 32. Ke2 Rb3 33. Nd6 Rxb4 34. Nf5 {[%cal
Rc7c8]} Rb8 35. Ke3 g6 36. Ke4 {If White can now play Nd6 this consolidates a
bit.} gxf5+ 37. Kxe5 Ra8 38. Kf6 $2 (38. Rc4) 38... Kg8 {Weighted Error Value:
White=0.37/Black=0.06} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "13.3"]
[White "Giri, Anish"]
[Black "Shankland, Sam"]
[Result "1/2-1/2"]
[ECO "D42"]
[WhiteElo "2764"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "90"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,90,5,1,0,-20,-36,-33,-43,-41,-56,-22,-47,-66,-31,0,0,0,0,0,0,0,0,8,8,
9,12,10,10,10,10,10,9,11,11,87,0,0,0,0,0,0,0,0,0,0,0,0,0,37,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 c5 2. c4 Nc6 3. Nc3 Nf6 4. e3 e6 5. d4 d5 6.
cxd5 Nxd5 7. Bd3 Be7 8. O-O O-O 9. a3 cxd4 10. exd4 Bf6 11. Be4 Nce7 12. h4 {
D42: Queen's Gambit Declined: Semi-Tarrasch: 5 cxd5 Nxd5 6 e3 Nc6 7 Bd3 .} Bd7
13. Ng5 g6 {[#]} 14. Nf3 $146 {Black is slightly better.} ({Predecessor:} 14.
h5 Bc6 15. Qg4 Bxg5 16. Bxg5 f5 17. Qh4 fxe4 18. Nxd5 Qxd5 19. Bxe7 Rf7 20.
hxg6 hxg6 {1/2-1/2 (30) Megaranto,S (2528)-Wang,Y (2699) Ashkhabad 2017}) 14...
Bc6 {Threatens to win with ...Nxc3.} 15. Re1 Rc8 16. Bh6 Nxc3 17. bxc3 Bxe4 18.
Bxf8 Nd5 {And now ...Bxf3 would win.} 19. Bb4 (19. Rxe4 Nxc3 20. Qe1 Nxe4 $17)
19... Bxf3 20. Qxf3 Bxh4 21. a4 a5 22. Bc5 b6 {[#]} 23. c4 $1 Nf6 {[#]} 24.
Bxb6 Qxb6 25. Qf4 Rxc4 26. Qxh4 Nd5 (26... Qxd4 27. Qxd4 Rxd4 28. Reb1 $16) 27.
Reb1 Qc7 {[#]} ({Much worse is} 27... Rxd4 $6 28. Rxb6 Rxh4 29. Rb8+ Kg7 30. g3
$16) ({Not} 27... Qxd4 $2 28. Qxd4 Rxd4 29. Rb5 $18) (27... Qd6 $1 $11 {
keeps the balance.}) 28. Qe4 ({White should play} 28. Qg3 $1 $16) 28... Nc3 $1
$11 {[%cal Rc3e4]} 29. Qa8+ Kg7 30. Rb8 Ne2+ {[%mdl 64] Double Attack} ({
Don't blunder} 30... Rxa4 $2 31. Rxa4 Nxa4 32. Rg8+ Kf6 33. Qf3+ Ke7 34. Qa3+
Kf6 35. Qxa4 $18) 31. Kf1 {aiming for Rg8+.} Nf4 32. Rg8+ Kh6 $1 33. Qe4 {
Hoping for g3.} Rc1+ 34. Rxc1 Qxc1+ {[%mdl 4096] Endgame KQR-KQN} 35. Qe1 Qc6 {
[%csl Gf4][%cal Rc6g2] The position is equal.} 36. f3 Qc4+ 37. Kg1 {Strongly
threatening Qd2!} Qxd4+ 38. Kh2 {Qh4+ would kill now.} Qf6 39. Kh1 Qg5 {
[%csl Gf4][%cal Rg5g2]} 40. Qg1 {Black should prevent Qh2+.} Nh5 {( -> ...Ng3+)
} 41. g4 Qh4+ 42. Qh2 Qe1+ 43. Qg1 {[%cal Rg4g5]} Qh4+ 44. Qh2 Qe1+ 45. Qg1 {
[%cal Rg4g5]} Qh4+ {Weighted Error Value: White=0.06/Black=0.05} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "13.4"]
[White "Nepomniachtchi, Ian"]
[Black "Bluebaum, Matthias"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2789"]
[BlackElo "2670"]
[Annotator "TA"]
[PlyCount "118"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,118,22,7,31,0,0,-14,-16,-72,-72,-74,-71,-72,-69,-71,-77,-78,-67,-108,
-107,-108,-101,-116,-101,-111,-79,-85,-66,-81,-71,-69,-75,-69,-69,-91,-74,-101,
-106,-125,-124,-152,-109,-135,-116,-355,-312,-475,-464,-1091,-974,-904,-798,
-2198,-1973,-1763,-2148,-2249,-2190,-2035,-2028,-1775,-460,-1727,-1720,-1720,
-1416,-1179,-1059,-29975,-29976,-29976,-29977,-29977,-29978,-29978,-29977,
-29978,-29979,-29980,-29974,-29989,-29968,-29970,-29971,-29970,-29971,-29970,
-29972,-29970,-29970,-29954,-12492,-5273,-2526,-2250,-2139,-29984,-29985,
-29987,-29984,-29987,-29988,-29988,-29989,-29989,-29990]} 1. e4 e6 2. d4 d5 3.
Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. a3 Qb6 {C11: French:
Classical System: 4 e5 and 4 Bg5 dxe4.} 9. Na4 Qa5+ 10. c3 c4 $1 {The position
is equal.} 11. Be2 {[#]} (11. b4 $11 cxb3 12. Qxb3) 11... b5 $5 $146 {[%mdl 8]
An interesting novelty.} ({Predecessor:} 11... Be7 12. O-O O-O 13. b4 cxb3 14.
Qxb3 Qc7 15. Bd3 f5 16. exf6 Nxf6 17. Nb6 Rb8 {1-0 (45) Nepomniachtchi,I (2751)
-Morozevich,A (2665) Moscow 2018}) 12. Nc5 Nxd4 {[%mdl 64] Pin} 13. Nxd7 Nxf3+
14. Bxf3 Bxd7 15. f5 {[#]} Qc7 $1 16. Bd4 Bc5 17. fxe6 fxe6 18. Bh5+ g6 {
Hoping for ...Bxd4.} 19. Bg4 Bxd4 20. Qxd4 O-O 21. Kd2 Rf7 22. Raf1 Raf8 $36 {
[%mdl 2048] Black has strong initiative.} 23. Rxf7 Rxf7 24. h4 Qd8 25. Kc2 a5
26. Kb1 Qb8 27. g3 b4 28. cxb4 axb4 29. a4 $2 (29. axb4 $17 Qxb4 30. h5) 29...
h5 $19 30. Bh3 (30. Bd1 {was forced.} b3 31. g4 hxg4 32. Rg1) 30... Qa8 31. g4
(31. Rf1 $142 Rxf1+ 32. Bxf1 Qxa4 33. Be2) 31... Qxa4 32. gxh5 b3 33. Rg1 Rf3
34. Rxg6+ Kh7 35. Rg7+ Kxg7 36. Qg4+ Kh8 37. Qxf3 Qa2+ 38. Kc1 {Strongly
threatening Qf6+.} Qa1+ 39. Kd2 Qxb2+ {[%mdl 64] Double Attack} 40. Ke1 Qxe5+
41. Kf2 b2 42. Qf8+ Kh7 43. Qe7+ Qg7 44. Qb4 Qd4+ 45. Kg2 Qe4+ 46. Kh2 Qe5+ 47.
Kg2 Qe2+ 48. Kg3 Qd3+ 49. Kh2 Qc2+ 50. Bg2 b1=Q 51. Qe7+ Kg8 52. Qd8+ {[#]} Kf7
$1 53. Qxd7+ Kf6 {( -> ...Qb8+)} 54. Qd8+ Ke5 55. h6 Qh7 {Black mates.} 56. Qf8
Qbb7 57. Kg3 Qbf7 58. Qb8+ Qc7 59. Qf8 Kd4+ {White did not feel at home in the
position after the opening. Accuracy: White = 54%, Black = 92%.} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "13.5"]
[White "Nakamura, Hikaru"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "C28"]
[WhiteElo "2736"]
[BlackElo "2781"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,80,-22,-27,-28,-31,0,-22,-16,-35,-26,-22,-27,-14,-8,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,18,20,60,52,57,0,-10,-92,-83,-67,-84,-85,-81,-70,-51,
-95,-80,-91,-87,-106,-80,-83,-87,-78,-72,-76,-76,-68,0,0,0,-85,0,0,0]} 1. e4 e5
2. Bc4 Nf6 3. d3 Nc6 4. Nc3 Na5 5. Nf3 Nxc4 6. dxc4 Bb4 7. Qd3 d6 {C28: Vienna
Game: 2...Nf6 3 Bc4 Nc6.} 8. Bd2 Bg4 {[#]} 9. Ng1 $146 ({Predecessor:} 9. O-O-O
Qe7 10. h3 Bh5 11. g4 Bg6 12. Rhe1 Bxc3 13. Bxc3 O-O-O 14. Qe3 Kb8 15. Nd2 {
1/2-1/2 (65) Reitinger,P (2114)-Plesek,J (2150) Czechia 2010}) 9... O-O 10. f3
Be6 11. a3 Bxc3 12. Qxc3 Nd7 13. Ne2 Qh4+ 14. Ng3 f5 15. exf5 Rxf5 16. O-O-O
Rf7 17. b3 a5 18. a4 b6 19. Be3 Raf8 20. Ne4 h6 21. Qd2 Nf6 22. Nc3 Rd7 23. Qe2
Rfd8 24. Kb2 d5 25. Bf2 Qh5 26. g4 (26. cxd5 $14 Nxd5 27. Bg3) 26... Nxg4 27.
fxg4 (27. Rxd5 $11 {keeps the balance.} Nxf2 28. Rxd7 Rxd7 29. Qxf2) 27... Bxg4
$17 28. Qe1 {[%cal Rd1d5]} Bxd1 29. Qxd1 Qxd1 30. Rxd1 {[%cal Rc3d5]} dxc4 31.
Re1 cxb3 32. Kxb3 Re8 33. Bg3 e4 34. Rxe4 Rxe4 35. Nxe4 Rd4 36. Nf2 Rb4+ 37.
Ka3 Rc4 38. Kb3 Rb4+ 39. Ka3 $1 {[#]} Rc4 (39... c6 $1 $17 40. Nd1 Re4) 40. Kb3
$11 Rb4+ {Weighted Error Value: White=0.09/Black=0.10} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "13.6"]
[White "Vidit, Santosh Gujrathi"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2726"]
[BlackElo "2770"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,81,0,0,0,4,-4,2,4,15,0,11,0,-8,-21,0,0,0,0,0,0,0,-7,0,0,-4,-28,-12,
-18,-7,-18,-16,-17,-17,-17,-17,-16,-18,-17,-17,-29,-28,-32,-14,-31,0,-17,0,0,0,
-157,-157,-157,-157,-157,-157,-157,-157,-157,0,-157,-157,-157,-2,-33,-39,-54,
-54,-62,-68,-68]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 d5 6. Nf3 b6
7. cxd5 exd5 8. Rc1 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5.} Bb7 9.
Bd3 Be7 $1 {[%mdl 4] is now more promising than 9...a6.} 10. O-O {The position
is equal.} c5 11. Ne5 Nc6 12. Ne2 Rc8 {[#]} 13. Bc3 $146 (13. Ng3 {looks
sharper.} g6 14. b3 Bd6 15. Bc3 Nb4 16. Bxb4 cxb4 17. Rxc8 Qxc8 18. Qa1) ({
Predecessor:} 13. Ng3 cxd4 14. Nxc6 Rxc6 15. exd4 Rxc1 16. Bxc1 Ne4 17. Qa4 Qc7
18. Be3 Bd6 19. Rc1 {1-0 (43) Fedoseev,V (2664)-Ganguly,S (2658)
Khanty-Mansiysk 2019}) 13... Ne4 (13... Bd6 {keeps more tension.} 14. f4 Rc7
15. Qe1 Ne4 16. Bxe4 dxe4 17. Rd1 cxd4 18. Nxc6 Rxc6 19. Nxd4 Rc5) 14. Nxc6
Bxc6 15. Bxe4 dxe4 16. dxc5 Qxd1 17. Rfxd1 Bxc5 18. Nd4 Ba4 19. Re1 Bd7 20. h3
f6 21. Rcd1 Kf7 22. Nb3 Ba4 23. Rd2 Bxb3 24. axb3 Rfd8 25. Rxd8 Rxd8 $11 {
[%mdl 4096] Endgame KRB-KRB} 26. Ra1 a5 27. Kf1 f5 28. Ke2 g5 29. Ra4 Ke6 30.
g4 Rc8 31. b4 $2 ({White should play} 31. Kf1 $11) 31... Bxb4 $17 32. Bxb4 {
[#] Strongly threatening Bc3. KRB-KR} Rc4 {[%mdl 64] Pin} 33. b3 Rxb4 34. Rxb4
axb4 {KP-KP} 35. Kf1 h5 $2 (35... Kf6 $17 36. Kg2 Kg6) 36. Kg2 $2 ({White must
play} 36. gxh5 $11 Kf6 37. Kg2) 36... fxg4 37. hxg4 {[#]} hxg4 ({Black should
try} 37... h4 $1 $17 38. Kh2 Ke5) 38. Kh2 $11 Kf6 {Black is slightly better.}
39. Kg2 $1 Kg6 40. Kh2 $1 Kh6 $1 41. Kg2 $1 {Weighted Error Value: White=0.18/
Black=0.17} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "13.7"]
[White "Radjabov, Teimour"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "2765"]
[BlackElo "2784"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,129,32,20,14,32,21,18,11,19,22,19,25,10,10,25,18,20,14,24,4,10,0,58,
72,103,127,83,23,121,141,139,128,136,69,43,60,118,114,125,77,79,78,82,71,83,86,
77,47,41,41,50,37,82,79,79,67,203,210,216,204,279,296,310,102,102,70,70,70,73,
70,87,74,108,90,89,89,89,79,81,79,83,82,150,125,124,97,95,96,126,126,126,126,
190,205,200,199,187,189,195,206,188,8,8,8,8,8,8,8,8,8,8,8,8,8]} 1. Nf3 {
Quintiliano,R} Nf6 2. b3 g6 3. Bb2 Bg7 4. c4 c5 5. g3 b6 6. Bg2 Bb7 7. O-O O-O
8. d4 cxd4 9. Qxd4 Nc6 10. Qc3 {A30: Symmetrical English: Double Fianchetto
and Hedgehog.} Qc7 11. Rd1 Rad8 12. Na3 {[%cal Bb1a3,Ba3c2,Bc2e3][%mdl 32]}
Rfe8 13. Rac1 Qb8 14. Qe1 a6 15. Nc2 b5 {[#]} 16. Ne3 $146 ({Predecessor:} 16.
c5 d5 17. cxd6 Rxd6 18. Rxd6 Qxd6 19. Nfd4 Nd5 20. Ba3 Qd7 21. Nxc6 Bxc6 22. e4
{0-1 (46) Hou,Y (2654)-Vachier Lagrave,M (2789) Karlsruhe/Baden-Baden 2018 CBM
184 [Quintiliano,R]}) 16... bxc4 17. bxc4 d6 18. Ba1 Qa7 19. Nd5 e5 (19... Ne4
$11) 20. e3 $14 Nxd5 21. cxd5 Ne7 22. Nd2 ({Better is} 22. Qa5 $16) 22... Nxd5
(22... Bxd5 $11 {keeps the balance.} 23. Bxd5 Nxd5) 23. Nc4 $16 e4 24. Bxg7
Kxg7 25. Qa5 (25. Rd4 $16) 25... Qc5 $14 26. Qd2 {[%mdl 1024] White has
compensation.} Qa7 ({Black should try} 26... Ba8 $1 $14) 27. Qb2+ $16 Kg8 28.
Na5 Ba8 29. Nc6 Bxc6 30. Rxc6 Rb8 31. Qd2 $36 {[%mdl 2048] White is on the
roll.} Nb4 32. Rxd6 (32. Rc4 $5 {[%cal Rc4b4]} Nd3 33. Rxe4 Rxe4 34. Bxe4 $14)
32... Nd3 $1 33. Qc3 Qe7 34. Rxa6 Rec8 {[#]} 35. Rc6 {[%cal Rc6c8]} Rxc6 36.
Qxc6 f5 {[#]} (36... Rb2 $14) 37. Bf1 $1 $18 Ne5 38. Qc3 Nf3+ 39. Kg2 {
Threatening mate with Bc4+.} Qe5 40. Bc4+ $2 (40. Qc6 $18 {has better winning
chances.}) 40... Kg7 $16 41. Qxe5+ (41. Qa3 {is more complex.} Kh6 42. Be2 Qb2
43. Qxb2 Rxb2 44. Bxf3 exf3+ 45. Kxf3 Rxa2 46. h3) 41... Nxe5 {[%mdl 4096]
Endgame KRB-KRN} 42. Bb3 Nd3 43. h4 h6 44. Rb1 Nc5 45. Bc2 Ra8 46. Rb5 Nd3 47.
Rb7+ Kf6 {Hoping for ...Ne1+.} 48. Rb6+ Kg7 {Strongly threatening ...Ne1+.} 49.
Bb3 Rc8 ({Black should play} 49... Ne1+ 50. Kf1 Nf3) 50. Rb7+ Kf6 51. f4 {
[%csl Gb3][%cal Rb7f7]} exf3+ 52. Kxf3 Rc6 53. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]}
Nc5 54. Rb5 g5 (54... Nxb3 $16 55. Rxb3 Ra6) 55. hxg5+ hxg5 56. Bd5 Rc7 57. a5
g4+ 58. Ke2 Ke7 {intending ...Na4.} 59. e4 $2 (59. Ba8 $18) 59... Nxe4 $11 {
The position is equal.} 60. Bxe4 fxe4 {KR-KR} 61. Re5+ Kf6 62. Rxe4 Rc2+ $1 63.
Ke3 $1 {Threatens to win with Ra4.} Ra2 64. Kf4 Rxa5 65. Kxg4 {Black defended
with fortune.  Weighted Error Value: White=0.17/Black=0.14} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "13.8"]
[White "Ding, Liren"]
[Black "Carlsen, Magnus"]
[Result "1-0"]
[ECO "E10"]
[WhiteElo "2791"]
[BlackElo "2862"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,71,37,35,33,59,38,56,49,38,56,47,47,47,47,49,57,48,36,13,29,67,56,53,
66,154,141,146,135,162,103,129,93,99,91,158,76,98,-5,140,125,238,0,191,168,174,
133,133,129,307,297,529,552,534,548,547,544,507,510,896,885,939,925,1037,1051]
} 1. d4 Nf6 2. c4 e6 3. Nf3 a6 (3... d5 4. Nc3 h6 5. Bf4 Bd6 6. Bxd6 Qxd6 7. e3
O-O 8. Rc1 b6 9. cxd5 Nxd5 10. Nxd5 Qxd5 11. a3 Qd6 12. Qc2 c6 13. Qe4 Qd5 14.
Bd3 Qxe4 15. Bxe4 {1/2-1/2 (49) Ding,L (2791)-Carlsen,M (2862) chess24.com INT
2020}) 4. Nc3 Bb4 5. Bg5 h6 6. Bh4 {E10: Blumenfeld Gambit.} b6 7. e3 Bb7 8.
Bd3 {[#] White is slightly better.} Bxc3+ $146 ({Predecessor:} 8... g5 9. Bg3
d5 10. Qa4+ Nc6 11. cxd5 Nxd5 12. Rc1 O-O 13. O-O Nxc3 14. bxc3 Bd6 {1-0 (42)
Rocabado,F (2187)-Sipos,S (2006) Douglas 2016}) 9. bxc3 d6 10. O-O Nbd7 11. Nd2
g5 12. Bg3 h5 13. h3 h4 14. Bh2 g4 15. hxg4 h3 16. g3 Rg8 (16... Bg2 $14) 17.
f3 $16 Qe7 18. e4 O-O-O 19. Rf2 (19. Kh1 $18) 19... Nh7 20. a4 a5 21. Rb1 Rde8
({Black should play} 21... e5) 22. Nf1 (22. e5 $142 f6 23. exd6 cxd6 24. f4)
22... f5 23. exf5 ({White should try} 23. gxf5 $16 {Strongly threatening Ne3.}
exf5 24. exf5) 23... exf5 (23... e5 $1 $11 {remains equal.}) 24. Bxf5 Ng5 (
24... Kb8 $16 25. Rbb2 Ndf6) 25. c5 $2 (25. f4 $18) 25... Kb8 $2 {[#]} (25...
dxc5 $11 26. d5 Nf7) 26. cxb6 $1 $18 Nxb6 27. d5 Ba6 {and if ...Be2 works,
Black does fine.} 28. Qd4 {Hoping for f4.} Ka7 $2 {This move loses the game
for Black.} (28... Qe5 $16 {was called for.} 29. Qxe5 Rxe5) 29. f4 Ne4 $2 {[#]}
(29... Qg7 30. fxg5 Qxd4 31. cxd4 Nxd5) 30. Re1 {White is clearly winning.}
Nxf2 31. Rxe7 Rxe7 32. Kxf2 ({Not} 32. Qxf2 Re2 $16) 32... Re2+ 33. Kf3 Rge8 (
33... Ra2 $142) 34. Bd3 Bxd3 35. Qxd3 Rg2 36. g5 {Weighted Error Value:
White=0.30/Black=0.51} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "14.1"]
[White "Dubov, Daniil"]
[Black "Carlsen, Magnus"]
[Result "1/2-1/2"]
[ECO "E07"]
[WhiteElo "2710"]
[BlackElo "2862"]
[Annotator "TA"]
[PlyCount "244"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,244,19,0,20,6,39,10,12,10,54,52,75,79,87,81,81,77,68,83,84,81,81,74,
181,154,132,130,150,127,118,123,142,127,172,185,145,40,95,101,84,89,88,31,99,
100,100,100,100,102,140,140,140,140,140,140,140,140,147,147,153,153,192,192,
201,200,200,193,201,201,201,201,201,201,201,201,201,201,201,201,201,201,201,
201,201,0,201,201,201,201,201,201,201,171,171,171,171,171,171,171,171,171,171,
171,171,171,171,171,171,171,171,171,171,171,171,132,132,132,171,171,171,132,
132,132,132,132,132,132,132,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
12841,12842,12842,12840,12841,12841,12845,12845,12846,0,0,0,0,0,12848,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3
e6 5. g3 Nbd7 6. Bg2 Be7 7. O-O O-O 8. b3 b6 9. Bb2 a5 {9...Ba6 gains
popularity. E07: Closed Catalan: Main Line (5 Nf3 0-0 6 0-0 Nbd7).} 10. e4 Ba6
{[#]} 11. Ne5 $146 ({Predecessor:} 11. Nd2 Rc8 12. Re1 dxe4 13. Ndxe4 b5 14. d5
cxd5 15. cxd5 exd5 16. Nxd5 Nxd5 17. Qxd5 Rc2 18. Qd4 Nf6 19. Rec1 Qxd4 20.
Bxd4 Rxc1+ 21. Rxc1 Nxe4 22. Bxe4 {1-0 (59) Predojevic,B (2617)-Saric,I (2637)
Sarajevo 2011}) 11... Rc8 12. Re1 {[%cal Rc4d5]} dxc4 13. Nxc4 (13. bxc4 Nxe5
14. dxe5 Nd7 $17) 13... Bxc4 14. bxc4 e5 15. Ne2 Bb4 16. Rf1 Re8 17. Qc2 Qe7
18. c5 exd4 19. cxb6 c5 (19... Qc5 $16 20. Qxc5 (20. Nxd4 Qxc2 21. Nxc2 Nxb6
$14) 20... Bxc5) 20. a3 Nxb6 21. axb4 axb4 {[%cal Rf6e4]} 22. Nf4 Qd6 23. Rfd1
Nbd7 24. Rac1 Qa6 25. Nd3 h5 26. h3 (26. f3 $16) 26... b3 (26... Nxe4 $14 27.
Bxe4 Rxe4) 27. Qc4 Qxc4 28. Rxc4 Nxe4 29. Bxd4 (29. Bxe4 $16 Rxe4 30. Kf1)
29... Nb6 (29... f5 $14) 30. Rxc5 $16 ({Inferior is} 30. Nxc5 Nxc4 31. Nxe4 Rb8
$17) 30... Nxc5 31. Nxc5 ({Don't play} 31. Bxc5 Na4 $15) 31... b2 32. Nd3 {
[%mdl 64] Discovered Attack} Nc4 33. Nxb2 Red8 34. Bc3 Nxb2 35. Rxd8+ Rxd8 36.
Bxb2 Rd1+ 37. Bf1 $1 Rb1 38. Bd4 Rd1 39. Be3 Ra1 40. Kg2 Ra5 41. Kf3 Rf5+ 42.
Ke4 Ra5 43. Bc4 Ra4 44. Kd5 Ra1 45. Kd6 Kf8 46. Bc5 Rd1+ 47. Kc6+ Kg8 48. Bd5
Rd3 49. Be4 Rd2 50. Bd5 Rd3 $1 51. Be3 g6 52. Kd6 Kg7 53. Ke5 Rd1 54. g4 hxg4
55. hxg4 Rd3 56. Bg5 Rd1 57. Bf6+ Kf8 58. Kd6 Rd2 59. f3 Rd1 60. Bc3 Rd3 61.
Be5 Rd1 62. f4 Rg1 {[#]} 63. g5 $1 Rd1 64. Kc6 Rd2 65. Bd6+ Kg7 66. Bb3 Rd3 67.
Bc4 Rd1 68. Kd7 Rd4 69. Bb5 f6 70. Ke6 Re4+ 71. Kd5 Re1 72. gxf6+ ({Better is} 
72. Bc5 $16 Kf7 73. Bd4) 72... Kxf6 $11 73. Be5+ (73. f5 {seems wilder.} gxf5)
73... Ke7 74. Bd3 Kf7 75. Bc4 Ke7 76. Kd4 Ra1 77. Bd3 (77. f5 {feels hotter.}
gxf5) 77... Kf7 78. Kd5 (78. f5 {feels hotter.} gxf5 79. Bxf5) 78... Rd1 (78...
Ra5+ {seems wilder.} 79. Kd6 Ra3 80. Be4 Ra6+ 81. Kd5 Ra5+) 79. Ke4 Re1+ 80.
Kd4 Rd1 81. Bc7 Ke7 82. Ke3 Rc1 83. Bb6 Rg1 $2 {[%mdl 8192]} (83... Kf8 $11)
84. Kf3 $18 Rc1 85. Kg4 Rc3 86. Be4 Kf7 87. Bd5+ Ke7 {[#]} 88. Ba5 $2 (88. Bf2
$1 $18 Rd3 89. Be4) 88... Rc1 $11 89. Bb6 Rd1 90. Bf3 (90. Bd4 {is interesting.
} Rxd4) 90... Rf1 $2 {[%mdl 8192]} (90... Rd2 $11) 91. Bg2 $2 (91. Be4 $18 Kf6
92. Bd4+ Ke6 93. Bxg6) 91... Rb1 {The position is equal.} 92. Bc5+ Kf7 93. Be4
Re1 94. Bd5+ Kg7 95. Bf3 Rc1 96. Be3 (96. Be2 {with more complications.} Rxc5)
96... Rb1 97. Bd4+ Kh6 98. Bc5 Kg7 99. Be2 Rc1 100. Be3 (100. Bd3 {keeps more
tension.} Rxc5) 100... Re1 101. Bd4+ (101. f5 {is more complex.} Rxe2) 101...
Kh6 102. Bf3 (102. f5 {looks sharper.} Rxe2) 102... Rb1 103. Bf6 Rg1+ 104. Kh4
Rb1 105. Bg5+ (105. f5 {seems wilder.} gxf5) 105... Kg7 106. Kg3 Rb3 107. Kf2
Ra3 108. Ke2 Rb3 109. Be4 Ra3 110. Bd3 Rb3 111. Ke3 Rb4 112. Be4 Ra4 113. Bd5 {
Strongly threatening Be7.} Rb4 114. Kd3 {aiming for Kc3.} Ra4 115. Bc4 {
Hoping for Bb3.} Ra1 116. Kd4 Re1 117. Kd5 {Threatens to win with Bd3.} Rd1+
118. Ke5 Re1+ 119. Kd6 {Kc5 is the strong threat.} Rd1+ 120. Ke7 Re1+ 121. Be6
{Black must now prevent Kd6.} Re4 122. Kd6 {And now Bd7 would win.} Re1 {
Weighted Error Value: White=0.13/Black=0.10} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "14.2"]
[White "Vachier-Lagrave, Maxime"]
[Black "Ding, Liren"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2784"]
[BlackElo "2791"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,47,5,0,-37,-26,-25,-7,-10,0,0,-1,0,0,0,0,0,0,0,33,22,8,17,9,22,21,8,
18,41,76,89,83,91,110,125,275,255,331,177]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4.
Nxd4 Nf6 5. Nc3 a6 6. Rg1 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 7. a4 $5 {[%mdl 4]
Exploring less charted territory. B90: Sicilian Najdorf: Unusual White 6th
moves, 6 Be3 Ng4 and 6 Be3 e5.} b4 8. Nd5 {[#]} Nxe4 $146 ({Predecessor:} 8...
e6 9. Nxf6+ Qxf6 10. Be3 Bb7 11. Qd2 Bxe4 12. f3 Bb7 13. Qxb4 Qe7 14. Qb6 Qd7 {
1-0 (76) Nepomniachtchi,I (2784)-Giri,A (2764) chess24.com INT 2020}) 9. Bc4 {
[#] Black must now prevent Qf3.The position is equal.} e6 {Hoping for ...Bb7.}
10. Qe2 Nc5 11. c3 Be7 12. Nxe7 Qxe7 13. cxb4 Ncd7 14. Bd2 $36 {[%mdl 2048]
White has some pressure.} Ne5 15. Bb3 O-O 16. O-O-O Nbc6 17. Nc2 Rb8 18. Bc3
Ng6 19. g3 e5 20. Bd5 Qd7 21. f4 Bb7 22. Bb3 exf4 (22... Bc8 $16) 23. gxf4 $18
Qf5 24. Qd2 {Weighted Error Value: White=0.03/Black=0.15} ({Not} 24. Rxd6 Qxf4+
{[%mdl 64] Double Attack} 25. Qd2 Qxd2+ 26. Rxd2 (26. Bxd2 Nce5 $14) (26. Kxd2
Kh8 $14) 26... Kh8 $16) (24. Qf1 $142) 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "14.3"]
[White "So, Wesley"]
[Black "Radjabov, Teimour"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2770"]
[BlackElo "2765"]
[Annotator "TA"]
[PlyCount "38"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,38,23,27,26,27,30,23,29,20,32,23,16,28,13,28,17,20,11,10,13,16,30,15,
0,24,0,26,0,23]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7
7. a3 {D37: Queen's Gambit Declined: 5 Bf4.} c5 8. cxd5 Nxd5 9. Nxd5 {White
has an edge.} exd5 10. dxc5 Nxc5 11. Be5 Bf5 12. Be2 Bf6 13. Bxf6 $1 {[%mdl 4]
is now more promising than 13.0-0.} Qxf6 14. Qd4 Qd6 {next ...Nb3 is good for
Black.} 15. Rd1 Rfd8 {Threatening ...Bc2.} 16. Qd2 {[#]} Qf6 $5 $146 {[%mdl 8]
An interesting novelty.} ({Predecessor:} 16... Nb3 17. Qc3 Qb6 18. Nd4 Nxd4 19.
Qxd4 Qxd4 20. Rxd4 Rac8 21. g4 Rc1+ 22. Rd1 Rxd1+ 23. Bxd1 Be6 24. f4 f5 25.
gxf5 Bxf5 26. Bb3 {1/2-1/2 (66) Nepomniachtchi,I (2784)-Nakamura,H (2736)
chess24.com INT 2020}) 17. Qd4 Qd6 18. Qd2 Qf6 19. Qd4 Qd6 {A rather calm draw.
Weighted Error Value: White=0.06/Black=0.00} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "14.4"]
[White "Aronian, Levon"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1/2-1/2"]
[ECO "D41"]
[WhiteElo "2781"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,94,25,35,33,30,-12,30,39,31,31,36,29,37,29,29,29,27,38,38,37,36,31,
31,29,22,10,12,8,3,10,9,27,20,10,15,15,32,40,45,41,40,0,0,0,0,0,0,0,0,0,24,0,
57,57,91,91,91,9,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4
Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. cxd5 cxd4 6. Qxd4 exd5 7. e4 {D41: Queen's
Gambit Declined: Semi-Tarrasch with 5 cxd5.} (7. e3 Nc6 8. Qd3 Bc5 9. Be2 d4
10. exd4 Nxd4 11. O-O O-O 12. Nxd4 Qxd4 13. Qg3 Ne4 14. Nxe4 Qxe4 15. Bf3 Qb4
16. Bf4 Bf5 17. a3 Qb6 18. Bc7 Qb5 19. b4 Be7 {1-0 (53) Aronian,L (2781)-Vidit,
S (2726) chess24.com INT 2020}) 7... dxe4 $1 {[%mdl 4] now scores much better
than the old 7...Nc6.} 8. Qxd8+ Kxd8 9. Ng5 {White has an edge.} Be6 10. Nxe6+
fxe6 11. Bg5 Nc6 12. Bc4 Ke7 13. Nxe4 {[#]} Kf7 $146 ({Predecessor:} 13... Rd8
14. Nxf6 gxf6 15. Be3 Bg7 16. O-O Kf7 17. Rfe1 Rhe8 18. h4 Nd4 19. Rac1 f5 {
1-0 (103) Kopeikin,V (2426)-Liskevich,V (2401) ICCF email 2013}) 14. Bxf6 gxf6
15. O-O-O Rd8 16. Rxd8 Nxd8 17. Rd1 Be7 18. f4 f5 19. Ng5+ Bxg5 20. fxg5 $11 {
[%mdl 4096] Endgame KRB-KRN} Ke7 21. Bb5 {[#] Threatens to win with Rd7+.} Nc6
22. Bxc6 bxc6 {KR-KR} 23. Rd4 Rg8 24. h4 h6 25. gxh6 {And now h7 would win.}
Rh8 26. g4 (26. Ra4 {is interesting.} Rxh6 27. Rxa7+ Kd6 28. g3 e5 29. Rf7)
26... fxg4 27. Rxg4 Rxh6 28. Kd2 a5 29. Ke3 Kf6 30. Rf4+ Kg6 31. Rc4 Rh5 (31...
Kf5 $11) 32. Rxc6 $14 Rxh4 33. Rxe6+ Kf7 {[#]} 34. Re5 (34. Rb6 $1 $16) 34...
Rb4 $1 $11 {The position is equal.} 35. b3 a4 36. Re4 (36. bxa4 {is more
complex.} Rxa4 37. Rf5+ Ke6 38. Rf2 Kd5 39. Rc2) 36... Rxe4+ 37. Kxe4 {White
threatens Kd5 and mate.} axb3 38. axb3 {White wants to mate with Kd5. KP-K} Ke6
39. b4 {[%cal Bb3b4,Bb4b5,Bb5b6,Bb6b7][%mdl 32]} Kd6 40. Kd4 (40. b5 {looks
sharper.} Kc7 41. Kd4 Kb7 42. Kc5 Kc7 43. Kb4) 40... Kc6 41. Kc4 Kb6 42. b5 Kb7
43. Kc5 Kc7 44. b6+ Kb7 45. Kb5 Kb8 46. Kc6 Kc8 47. b7+ Kb8 48. Kb6 {Weighted
Error Value: White=0.07/Black=0.05} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "14.5"]
[White "Bluebaum, Matthias"]
[Black "Nakamura, Hikaru"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2670"]
[BlackElo "2736"]
[Annotator "RC"]
[PlyCount "172"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "900+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d5 {
[%emt 0:00:00]} 3. e3 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 4. Nbd2 {[%emt 0:00:
00]} Nc6 {[%emt 0:00:41]} 5. c3 {[%emt 0:00:52]} cxd4 {[%emt 0:00:36]} 6. exd4
{[%emt 0:00:00]} Bf5 {[%emt 0:00:01]} 7. Nh4 {[%emt 0:00:18]} Bg4 {[%emt 0:00:
41]} 8. Ndf3 {[%emt 0:00:38]} e6 {[%emt 0:00:20]} 9. h3 {[%emt 0:00:03]} Bh5 {
[%emt 0:00:02]} 10. Bd3 {[%emt 0:00:11]} Bd6 {[%emt 0:00:14]} 11. Qe2 {[%emt 0:
00:21]} Bg6 {[%emt 0:00:15]} 12. Nxg6 {[%emt 0:00:22]} hxg6 {[%emt 0:00:00]}
13. Bg5 {[%emt 0:00:20]} Qc7 {[%emt 0:00:07]} 14. g3 {[%emt 0:00:19]} O-O-O {
[%emt 0:00:05]} 15. O-O-O {[%emt 0:00:27]} Kb8 {[%emt 0:00:11]} 16. Kb1 {
[%emt 0:00:02]} Rc8 {[%emt 0:00:05]} 17. h4 {[%emt 0:00:23]} Na5 {[%emt 0:01:
17]} 18. Ne5 {[%emt 0:01:24]} Ka8 {[%emt 0:00:54]} 19. Bf4 {[%emt 0:00:30]}
Rhd8 {[%emt 0:00:12]} 20. Rc1 {[%emt 0:00:42]} Nc6 {[%emt 0:00:52]} 21. Rhe1 {
[%emt 0:00:24]} Bxe5 {[%emt 0:00:32]} 22. dxe5 {[%emt 0:00:51]} Nd7 {[%emt 0:
00:04]} 23. h5 {[%emt 0:00:01]} gxh5 {[%emt 0:00:31]} 24. Qxh5 {[%emt 0:00:04]}
g6 {[%emt 0:00:01]} 25. Qe2 {[%emt 0:01:07]} Rh8 {[%emt 0:02:07]} 26. c4 {
[%emt 0:03:09]} d4 {[%emt 0:01:31]} 27. c5 {[%emt 0:01:09]} Nb4 {[%emt 0:00:03]
} 28. a3 {[%emt 0:00:52]} Nd5 {[%emt 0:01:32]} 29. Rc4 {[%emt 0:00:34]} Nb8 {
[%emt 0:00:56]} 30. Rxd4 {[%emt 0:00:57]} Qxc5 {[%emt 0:00:10]} 31. Rc4 {
[%emt 0:00:12]} Qb6 {[%emt 0:00:20]} 32. Bd2 {[%emt 0:00:42]} Nc6 {[%emt 0:00:
07]} 33. Rec1 {[%emt 0:00:24]} Rh2 {[%emt 0:00:48]} 34. Be1 {[%emt 0:00:03]}
Rd8 {[%emt 0:00:14]} 35. Be4 {[%emt 0:00:54]} a6 {[%emt 0:00:21]} 36. Rd1 {
[%emt 0:00:55]} Nxe5 {[%emt 0:01:26]} 37. Rcc1 {[%emt 0:00:06]} Nc6 {[%emt 0:
00:07]} 38. Qf3 {[%emt 0:00:23]} Ne5 {[%emt 0:00:17]} 39. Qe2 {[%emt 0:00:05]}
f6 {[%emt 0:00:21]} 40. Ka1 {[%emt 0:00:28]} g5 {[%emt 0:00:09]} 41. Qd2 {
[%emt 0:00:18]} Nc6 {[%emt 0:00:14]} 42. Qd3 {[%emt 0:01:15]} Rhh8 {[%emt 0:00:
40]} 43. Kb1 {[%emt 0:00:08]} Ne5 {[%emt 0:01:14]} 44. Qe2 {[%emt 0:00:01]} g4
{[%emt 0:00:01]} 45. Bg2 {[%emt 0:00:06]} Rhe8 {[%emt 0:00:17]} 46. Qe4 {
[%emt 0:00:07]} Qb3 {[%emt 0:00:07]} 47. Qc2 {[%emt 0:00:25]} Qxc2+ {[%emt 0:
00:06]} 48. Kxc2 {[%emt 0:00:00]} f5 {[%emt 0:00:26]} 49. Kb1 {[%emt 0:00:02]}
Nc6 {[%emt 0:00:08]} 50. Bd2 {[%emt 0:00:04]} Rg8 {[%emt 0:00:10]} 51. Rh1 {
[%emt 0:00:05]} Nd4 {[%emt 0:00:12]} 52. Ba5 {[%emt 0:00:12]} Rd7 {[%emt 0:00:
03]} 53. Ka2 {[%emt 0:00:18]} Ka7 {[%emt 0:00:17]} 54. Rh6 {[%emt 0:00:07]} Re8
{[%emt 0:00:26]} 55. Rd1 {[%emt 0:00:29]} Nc6 {[%emt 0:00:13]} 56. Bd2 {
[%emt 0:00:01]} Nb6 {[%emt 0:00:19]} 57. Bxc6 {[%emt 0:00:23]} bxc6 {[%emt 0:
00:00]} 58. Kb1 {[%emt 0:00:01]} Red8 {[%emt 0:00:36]} 59. Kc1 {[%emt 0:00:01]}
Rd6 {[%emt 0:00:01]} 60. b3 {[%emt 0:00:09]} R8d7 {[%emt 0:00:12]} 61. a4 {
[%emt 0:00:13]} Kb7 {[%emt 0:00:01]} 62. Kc2 {[%emt 0:00:04]} c5 {[%emt 0:00:
06]} 63. Rhh1 {[%emt 0:00:19]} Kc6 {[%emt 0:00:12]} 64. Rhe1 {[%emt 0:00:13]}
Nd5 {[%emt 0:00:12]} 65. Re2 {[%emt 0:00:08]} Nb4+ {[%emt 0:00:18]} 66. Kc1 {
[%emt 0:00:01]} e5 {[%emt 0:00:36]} 67. Rh1 {[%emt 0:00:01]} Nd3+ {[%emt 0:00:
01]} 68. Kc2 {[%emt 0:00:01]} f4 {[%emt 0:00:02]} 69. gxf4 {[%emt 0:00:24]}
exf4 {[%emt 0:00:00]} 70. Bc3 {[%emt 0:00:08]} Nb4+ {[%emt 0:00:36]} 71. Bxb4 {
[%emt 0:00:09]} cxb4 {[%emt 0:00:00]} 72. Rg1 {[%emt 0:00:28]} f3 {[%emt 0:00:
07]} 73. Re4 {[%emt 0:00:02]} Rd2+ {[%emt 0:00:28]} 74. Kc1 {[%emt 0:00:02]}
R7d4 {[%emt 0:00:16]} 75. Rexg4 {[%emt 0:00:19]} Rxg4 {[%emt 0:00:01]} 76. Rxg4
{[%emt 0:00:00]} Rxf2 {[%emt 0:00:00]} 77. Rxb4 {[%emt 0:00:17]} Ra2 {[%emt 0:
00:08]} 78. Rf4 {[%emt 0:00:09]} f2 {[%emt 0:00:01]} 79. Kd1 {[%emt 0:00:03]}
a5 {[%emt 0:00:02]} 80. Rf5 {[%emt 0:00:17]} Kd6 {[%emt 0:00:04]} 81. Rf3 {
[%emt 0:00:06]} Kd5 {[%emt 0:00:09]} 82. Rf4 {[%emt 0:00:11]} Ke5 {[%emt 0:00:
02]} 83. Rf8 {[%emt 0:00:09]} Kd4 {[%emt 0:00:04]} 84. Rf3 {[%emt 0:00:04]} Ke4
{[%emt 0:00:03]} 85. Rf8 {[%emt 0:00:02]} Ke3 {[%emt 0:00:02]} 86. Re8+ {
[%emt 0:00:36]} Kd3 {[%emt 0:00:02]} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "14.6"]
[White "Shankland, Sam"]
[Black "Nepomniachtchi, Ian"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2691"]
[BlackElo "2789"]
[Annotator "TA"]
[PlyCount "70"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,70,18,27,7,35,33,57,35,30,34,42,29,34,34,40,4,90,83,75,48,81,70,84,
67,68,80,133,104,102,106,124,85,79,38,81,80,77,34,34,29,32,29,33,29,61,50,62,
48,44,16,16,16,16,16,16,16,16,16,16]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6
5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. h3 {B90: Sicilian Najdorf: Unusual White 6th
moves, 6 Be3 Ng4 and 6 Be3 e5.} Nc6 {[%cal Bb8c6,Bc6a5,Ba5c4][%mdl 32]} 9. g4
h6 10. Qf3 {White is slightly better.} Be6 11. O-O-O Rc8 12. Kb1 Na5 {[#]} 13.
Bc1 $146 ({Predecessor:} 13. Nc5 O-O 14. Rg1 Nh7 15. g5 Bxg5 16. Qg2 Kh8 17. h4
Bf6 18. Qg3 Rc6 19. Be2 {1/2-1/2 (71) Ibermax (2461)-Jazzled,R (2553)
playchess.com INT 2006}) 13... Nc4 14. Nd5 Nxd5 (14... Nd7 $11 {remains equal.}
) 15. exd5 $16 Bd7 16. Bd3 a5 17. Qe4 b5 18. f4 a4 19. Nd2 {[%cal Rd2c4]} Qc7 (
19... exf4 $142 20. Nxc4 (20. Bxc4 bxc4 21. Nxc4 O-O $11) 20... bxc4 21. Bxc4
O-O) 20. Rhe1 Bf6 21. Nf3 Kd8 22. Bxc4 Qxc4 23. fxe5 (23. Bd2 {is more complex.
} Qxe4 24. Ba5+ Ke7 25. Rxe4 Rc4 26. Rxc4 bxc4 27. Re1) 23... Bxe5 24. Nxe5
dxe5 25. Qxc4 (25. Qg2 {feels hotter.} f6 26. a3 Be8 27. Rd3 Qc7 28. d6) 25...
Rxc4 26. Rxe5 f6 27. Re3 {And now b3 would win.} Re8 28. b3 axb3 29. axb3 Rxe3
30. Bxe3 $11 {[%mdl 4096] Endgame KRB-KRB} Re4 31. Bc5 f5 {The position is
equal.} 32. Rd4 Rxd4 33. Bxd4 fxg4 34. hxg4 Bxg4 35. Bxg7 Bf3 {Weighted Error
Value: White=0.10/Black=0.14} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "14.7"]
[White "Dominguez Perez, Leinier"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2758"]
[BlackElo "2764"]
[Annotator "TA"]
[PlyCount "47"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,47,17,39,0,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1.
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 is becoming the main line.} Ke8 10. Nc3 (10. Bf4 Ne7
11. h3 Ng6 12. Bh2 Be7 13. Nc3 Bd7 14. Nd4 Nf8 15. Rd2 h5 16. Rad1 Rd8 17. a3
h4 18. Nce2 c5 19. e6 Nxe6 20. Nxe6 Bxe6 21. Bxc7 Rxd2 22. Rxd2 {1/2-1/2 (31)
Dominguez Perez,L (2754)-Giri,A (2734) Wijk aan Zee 2014}) 10... Ne7 11. a4 {
C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} (11. h3 {seems wilder.} Bf5 12.
Nd4 Bg6 13. Bf4 Nf5 14. Nf3) 11... Ng6 {The position is equal.} (11... Bg4 {
is interesting.} 12. Bf4 h6 13. e6 fxe6 14. Bxc7 Bxf3 15. gxf3 Nd5) 12. a5 (12.
h3 {keeps more tension.} Be7 13. b3 Bd7 14. Be3 a6 15. Rdb1) 12... Bg4 13. Ra4
Bxf3 14. gxf3 Be7 15. f4 {[#]} Rd8 $146 ({Predecessor:} 15... f5 16. exf6 Bxf6
17. Ne4 Rd8 18. Rxd8+ Kxd8 19. Be3 b6 20. axb6 axb6 21. f5 Ne7 {1/2-1/2 (49)
Dominguez Perez,L (2758)-Nakamura,H (2736) Lichess.org INT 2020}) 16. Rxd8+
Kxd8 17. Be3 a6 18. Ne4 Kc8 19. Kf1 Rd8 20. Ke2 Rd5 21. Nc3 Rd8 22. Ne4 Rd5 23.
Nc3 Rd8 24. Ne4 {An uneventful encounter.  Weighted Error Value: White=0.04/
Black=0.03} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "14.8"]
[White "Duda, Jan-Krzysztof"]
[Black "Grischuk, Alexander"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "2743"]
[BlackElo "2777"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,55,44,30,32,20,36,10,8,15,21,0,-5,0,0,-8,7,10,21,7,52,41,43,0,50,44,
54,52,80,0,77,87,114,110,145,135,200,208,412,416,417,427,426,410,378,394,897,
920]} 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. d4 d6 6. O-O Ne4 {E60:
King's Indian: Unusual lines and Fianchetto Variation without Nc3.} 7. b3 a5 8.
Qc2 f5 {The position is equal.} 9. Bb2 Nc6 {[#]} 10. Nbd2 $146 ({Predecessor:} 
10. a3 e5 11. dxe5 dxe5 12. Rd1 Qe7 13. Nbd2 Nc5 14. Ne1 Nd4 15. Bxd4 exd4 16.
Nd3 {0-1 (35) Jovanic,O (2447)-Pogosian,V (2168) Pardubice 2005}) 10... Nxd2
11. Qxd2 e5 $1 12. d5 Nb4 13. a3 $36 {[%cal Ba2a3,Ba3a4,Ba4a5][%mdl 2080]
White has the initiative.} Na6 14. Qxa5 Bd7 15. Qc3 Nc5 16. Nd2 Qe7 17. a4 Rf7
18. Qc2 f4 19. Ne4 ({Better is} 19. a5 $16) 19... Bf5 (19... Nxe4 $1 $11 {
keeps the balance.} 20. Bxe4 Qg5) 20. b4 $16 Nd7 21. a5 Kh8 22. Qb3 g5 (22...
Rb8 $16 23. c5 Bxe4 24. cxd6 (24. Bxe4 dxc5 25. b5 Rff8 $16) 24... cxd6 25.
Bxe4 fxg3 26. hxg3 (26. fxg3 Nf6 $16) 26... Nf6) 23. c5 $18 dxc5 $2 {[#]} (
23... Bxe4 {keeps fighting.} 24. Bxe4 Rb8 25. cxd6 Qxd6) 24. d6 $1 {[%mdl 576]
Deflection} cxd6 {[#]} 25. Nxd6 $1 {[%mdl 576] Discovered Attack} Qxd6 26. Qxf7
Be6 27. Rad1 Qa6 $2 (27... Qxd1 28. Rxd1 Bxf7) 28. b5 {Accuracy: White = 82%,
Black = 50%.} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "15.1"]
[White "Grischuk, Alexander"]
[Black "Dubov, Daniil"]
[Result "1/2-1/2"]
[ECO "A67"]
[WhiteElo "2777"]
[BlackElo "2710"]
[Annotator "RC"]
[PlyCount "174"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "900+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} c5 {[%emt 0:
00:02]} 3. d5 {[%emt 0:00:00]} e6 {[%emt 0:00:01]} 4. Nc3 {[%emt 0:00:00]} exd5
{[%emt 0:00:01]} 5. cxd5 {[%emt 0:00:00]} d6 {[%emt 0:00:00]} 6. e4 {[%emt 0:
00:03]} g6 {[%emt 0:00:01]} 7. f4 {[%emt 0:00:58]} Bg7 {[%emt 0:00:04]} 8. Bb5+
{[%emt 0:00:01]} Nfd7 {[%emt 0:00:02]} 9. a4 {[%emt 0:00:01]} O-O {[%emt 0:00:
04]} 10. Nf3 {[%emt 0:00:05]} c4 {[%emt 0:01:41]} 11. O-O {[%emt 0:03:05]} Nc5
{[%emt 0:00:12]} 12. Bxc4 {[%emt 0:01:31]} Bg4 {[%emt 0:00:04]} 13. h3 {
[%emt 0:01:47]} Bxf3 {[%emt 0:00:03]} 14. Qxf3 {[%emt 0:00:00]} Nbd7 {[%emt 0:
00:04]} 15. Be3 {[%emt 0:00:26]} Rc8 {[%emt 0:00:43]} 16. Rac1 {[%emt 0:01:38]}
Nb6 {[%emt 0:00:31]} 17. Be2 {[%emt 0:03:39]} Ncxa4 {[%emt 0:01:43]} 18. Nxa4 {
[%emt 0:00:03]} Rxc1 {[%emt 0:00:09]} 19. Bxc1 {[%emt 0:00:01]} Nxa4 {[%emt 0:
00:01]} 20. e5 {[%emt 0:00:01]} dxe5 {[%emt 0:01:08]} 21. f5 {[%emt 0:00:03]}
e4 {[%emt 0:00:17]} 22. Qxe4 {[%emt 0:00:13]} Nb6 {[%emt 0:02:31]} 23. d6 {
[%emt 0:01:16]} Nc8 {[%emt 0:01:12]} 24. d7 {[%emt 0:03:08]} Qxd7 {[%emt 0:01:
42]} 25. f6 {[%emt 0:00:03]} Re8 {[%emt 0:00:08]} 26. Qg4 {[%emt 0:00:45]} Qxg4
{[%emt 0:00:04]} 27. Bxg4 {[%emt 0:00:02]} Bf8 {[%emt 0:00:12]} 28. Bf3 {
[%emt 0:00:12]} Bc5+ {[%emt 0:00:21]} 29. Kh2 {[%emt 0:00:13]} Nd6 {[%emt 0:00:
17]} 30. g4 {[%emt 0:00:11]} Bd4 {[%emt 0:01:34]} 31. Bf4 {[%emt 0:00:18]} Ne4
{[%emt 0:01:07]} 32. g5 {[%emt 0:00:11]} h6 {[%emt 0:00:23]} 33. h4 {[%emt 0:
00:02]} hxg5 {[%emt 0:00:08]} 34. hxg5 {[%emt 0:00:00]} Bxb2 {[%emt 0:00:06]}
35. Re1 {[%emt 0:00:31]} Nxf6 {[%emt 0:01:21]} 36. Rb1 {[%emt 0:00:02]} Nh5 {
[%emt 0:00:07]} 37. Bxh5 {[%emt 0:00:07]} Be5 {[%emt 0:00:01]} 38. Bxe5 {
[%emt 0:00:04]} Rxe5 {[%emt 0:00:00]} 39. Bf3 {[%emt 0:00:21]} b6 {[%emt 0:00:
12]} 40. Rg1 {[%emt 0:00:26]} a5 {[%emt 0:00:01]} 41. Kh3 {[%emt 0:00:04]} a4 {
[%emt 0:00:13]} 42. Kg4 {[%emt 0:00:04]} a3 {[%emt 0:00:26]} 43. Ra1 {[%emt 0:
00:10]} Ra5 {[%emt 0:00:01]} 44. Bd1 {[%emt 0:00:12]} b5 {[%emt 0:00:22]} 45.
Bb3 {[%emt 0:00:04]} b4 {[%emt 0:00:01]} 46. Rf1 {[%emt 0:00:19]} Ra7 {[%emt 0:
00:10]} 47. Rf4 {[%emt 0:00:17]} Rb7 {[%emt 0:00:14]} 48. Rd4 {[%emt 0:00:05]}
Kf8 {[%emt 0:00:15]} 49. Re4 {[%emt 0:00:09]} Rb8 {[%emt 0:00:38]} 50. Rf4 {
[%emt 0:00:10]} Rb7 {[%emt 0:00:21]} 51. Re4 {[%emt 0:00:01]} Ra7 {[%emt 0:00:
03]} 52. Rxb4 {[%emt 0:00:09]} a2 {[%emt 0:00:02]} 53. Bxa2 {[%emt 0:00:04]}
Rxa2 {[%emt 0:00:01]} 54. Rb8+ {[%emt 0:00:05]} Kg7 {[%emt 0:00:14]} 55. Rc8 {
[%emt 0:00:08]} Ra4+ {[%emt 0:00:01]} 56. Kg3 {[%emt 0:00:01]} Rd4 {[%emt 0:00:
01]} 57. Rb8 {[%emt 0:00:02]} Rd1 {[%emt 0:00:02]} 58. Kg4 {[%emt 0:00:03]} Rh1
{[%emt 0:00:01]} 59. Ra8 {[%emt 0:00:02]} Rh5 {[%emt 0:00:03]} 60. Rb8 {
[%emt 0:00:04]} Rh8 {[%emt 0:00:01]} 61. Rb7 {[%emt 0:00:04]} Rd8 {[%emt 0:00:
05]} 62. Ra7 {[%emt 0:00:02]} Kf8 {[%emt 0:00:01]} 63. Rb7 {[%emt 0:00:03]}
Rd4+ {[%emt 0:00:01]} 64. Kg3 {[%emt 0:00:02]} Ke8 {[%emt 0:00:01]} 65. Ra7 {
[%emt 0:00:05]} Rd7 {[%emt 0:00:04]} 66. Ra1 {[%emt 0:00:44]} Rd3+ {[%emt 0:00:
07]} 67. Kg4 {[%emt 0:00:03]} Rd4+ {[%emt 0:00:00]} 68. Kg3 {[%emt 0:00:01]}
Rd5 {[%emt 0:00:16]} 69. Kg4 {[%emt 0:00:06]} Ke7 {[%emt 0:00:03]} 70. Ra7+ {
[%emt 0:00:38]} Ke6 {[%emt 0:00:02]} 71. Ra6+ {[%emt 0:00:02]} Rd6 {[%emt 0:00:
02]} 72. Ra4 {[%emt 0:00:21]} Ke5 {[%emt 0:00:08]} 73. Ra7 {[%emt 0:00:15]}
Rd4+ {[%emt 0:00:03]} 74. Kg3 {[%emt 0:00:03]} Ke6 {[%emt 0:00:01]} 75. Ra6+ {
[%emt 0:00:25]} Rd6 {[%emt 0:00:04]} 76. Ra7 {[%emt 0:00:13]} Rd7 {[%emt 0:00:
02]} 77. Ra6+ {[%emt 0:00:11]} Kf5 {[%emt 0:00:06]} 78. Ra5+ {[%emt 0:00:02]}
Ke4 {[%emt 0:00:01]} 79. Ra4+ {[%emt 0:00:13]} Ke5 {[%emt 0:00:03]} 80. Ra5+ {
[%emt 0:00:06]} Rd5 {[%emt 0:00:09]} 81. Ra7 {[%emt 0:00:09]} Ke6 {[%emt 0:00:
18]} 82. Ra6+ {[%emt 0:00:03]} Rd6 {[%emt 0:00:08]} 83. Ra7 {[%emt 0:00:05]}
Rb6 {[%emt 0:00:02]} 84. Kg4 {[%emt 0:00:10]} Rc6 {[%emt 0:00:02]} 85. Kf4 {
[%emt 0:00:12]} Rc4+ {[%emt 0:00:06]} 86. Kg3 {[%emt 0:00:02]} Rd4 {[%emt 0:00:
01]} 87. Ra6+ {[%emt 0:00:13]} Rd6 {[%emt 0:00:01]} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "15.2"]
[White "Giri, Anish"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "E42"]
[WhiteElo "2764"]
[BlackElo "2743"]
[Annotator "RC"]
[PlyCount "143"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "900+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:
00:00]} 3. Nc3 {[%emt 0:00:00]} Bb4 {[%emt 0:00:00]} 4. e3 {[%emt 0:00:00]} c5
{[%emt 0:00:02]} 5. Nge2 {[%emt 0:00:04]} cxd4 {[%emt 0:00:14]} 6. exd4 {
[%emt 0:00:04]} d5 {[%emt 0:00:05]} 7. a3 {[%emt 0:00:18]} Bxc3+ {[%emt 0:00:
09]} 8. Nxc3 {[%emt 0:00:00]} dxc4 {[%emt 0:00:01]} 9. Bxc4 {[%emt 0:00:01]}
O-O {[%emt 0:00:04]} 10. O-O {[%emt 0:00:04]} Nc6 {[%emt 0:00:03]} 11. Be3 {
[%emt 0:00:26]} b6 {[%emt 0:00:56]} 12. Ba2 {[%emt 0:03:17]} Bb7 {[%emt 0:01:
45]} 13. Re1 {[%emt 0:00:01]} Ne7 {[%emt 0:00:35]} 14. Bg5 {[%emt 0:00:17]} Ng6
{[%emt 0:05:18]} 15. d5 {[%emt 0:00:53]} exd5 {[%emt 0:00:00]} 16. Qd4 {
[%emt 0:01:18]} h6 {[%emt 0:01:01]} 17. Bxf6 {[%emt 0:00:05]} Qxf6 {[%emt 0:00:
00]} 18. Qxf6 {[%emt 0:00:03]} gxf6 {[%emt 0:00:00]} 19. Rad1 {[%emt 0:01:44]}
Rfe8 {[%emt 0:01:14]} 20. Bxd5 {[%emt 0:00:02]} Bxd5 {[%emt 0:03:12]} 21. Nxd5
{[%emt 0:00:00]} Kg7 {[%emt 0:00:05]} 22. Rxe8 {[%emt 0:01:22]} Rxe8 {[%emt 0:
00:02]} 23. Ne3 {[%emt 0:00:01]} Re5 {[%emt 0:00:17]} 24. g3 {[%emt 0:00:42]}
f5 {[%emt 0:01:12]} 25. Rd4 {[%emt 0:00:02]} Nf8 {[%emt 0:00:23]} 26. Rd3 {
[%emt 0:00:57]} Rb5 {[%emt 0:00:47]} 27. b4 {[%emt 0:00:06]} a5 {[%emt 0:00:08]
} 28. Nd5 {[%emt 0:00:15]} axb4 {[%emt 0:00:05]} 29. axb4 {[%emt 0:00:04]} Nh7
{[%emt 0:00:08]} 30. Rd4 {[%emt 0:02:16]} Nf6 {[%emt 0:00:03]} 31. Ne3 {
[%emt 0:00:20]} Re5 {[%emt 0:00:14]} 32. Kf1 {[%emt 0:00:38]} Kg6 {[%emt 0:00:
39]} 33. Ke2 {[%emt 0:00:23]} Re6 {[%emt 0:00:35]} 34. f3 {[%emt 0:02:02]} b5 {
[%emt 0:00:06]} 35. Rd2 {[%emt 0:00:04]} Ra6 {[%emt 0:00:11]} 36. Rc2 {[%emt 0:
00:07]} Nd7 {[%emt 0:00:25]} 37. f4 {[%emt 0:01:16]} Nf8 {[%emt 0:00:06]} 38.
Rd2 {[%emt 0:00:40]} Ne6 {[%emt 0:00:12]} 39. Nd5 {[%emt 0:00:11]} Ra3 {
[%emt 0:00:05]} 40. Ne7+ {[%emt 0:00:49]} Kf6 {[%emt 0:00:04]} 41. Nc6 {
[%emt 0:00:07]} h5 {[%emt 0:00:41]} 42. Ne5 {[%emt 0:00:11]} Ke7 {[%emt 0:00:
13]} 43. Rd7+ {[%emt 0:00:10]} Ke8 {[%emt 0:00:01]} 44. Rxf7 {[%emt 0:00:44]}
Nd4+ {[%emt 0:00:03]} 45. Kf2 {[%emt 0:00:02]} Ra2+ {[%emt 0:00:03]} 46. Ke3 {
[%emt 0:00:01]} Nc2+ {[%emt 0:00:01]} 47. Kd3 {[%emt 0:00:03]} Ne1+ {[%emt 0:
00:45]} 48. Kc3 {[%emt 0:00:05]} Rc2+ {[%emt 0:00:03]} 49. Kb3 {[%emt 0:00:38]}
Rxh2 {[%emt 0:00:01]} 50. Rxf5 {[%emt 0:00:00]} Rh3 {[%emt 0:00:02]} 51. Kb2 {
[%emt 0:00:06]} Rxg3 {[%emt 0:00:27]} 52. Rxh5 {[%emt 0:00:01]} Re3 {[%emt 0:
00:38]} 53. Rh6 {[%emt 0:00:20]} Kd8 {[%emt 0:00:12]} 54. Rd6+ {[%emt 0:00:12]}
Kc7 {[%emt 0:00:03]} 55. Rc6+ {[%emt 0:00:20]} Kb7 {[%emt 0:00:09]} 56. Rc5 {
[%emt 0:00:01]} Re4 {[%emt 0:00:19]} 57. Rxb5+ {[%emt 0:00:05]} Ka6 {[%emt 0:
00:01]} 58. Ra5+ {[%emt 0:00:04]} Kb6 {[%emt 0:00:03]} 59. Kc3 {[%emt 0:00:26]}
Rxf4 {[%emt 0:00:03]} 60. Nc4+ {[%emt 0:00:11]} Kb7 {[%emt 0:00:01]} 61. b5 {
[%emt 0:00:11]} Rf3+ {[%emt 0:00:25]} 62. Kd4 {[%emt 0:00:07]} Nc2+ {[%emt 0:
00:03]} 63. Ke4 {[%emt 0:00:06]} Rh3 {[%emt 0:00:21]} 64. Nd6+ {[%emt 0:00:12]}
Kc7 {[%emt 0:00:05]} 65. Ra6 {[%emt 0:00:05]} Rh4+ {[%emt 0:00:08]} 66. Kf3 {
[%emt 0:00:17]} Rb4 {[%emt 0:00:12]} 67. Rc6+ {[%emt 0:00:12]} Kd7 {[%emt 0:00:
01]} 68. Rxc2 {[%emt 0:00:09]} Kxd6 {[%emt 0:00:02]} 69. Rd2+ {[%emt 0:00:02]}
Kc5 {[%emt 0:00:01]} 70. Ke3 {[%emt 0:00:01]} Kxb5 {[%emt 0:00:01]} 71. Rd4 {
[%emt 0:00:01]} Rxd4 {[%emt 0:00:01]} 72. Kxd4 {[%emt 0:00:00]} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "15.3"]
[White "Nepomniachtchi, Ian"]
[Black "Dominguez Perez, Leinier"]
[Result "0-1"]
[ECO "E48"]
[WhiteElo "2789"]
[BlackElo "2758"]
[Annotator "RC"]
[PlyCount "126"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "900+10"]

1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:
00:00]} 3. Nc3 {[%emt 0:00:00]} Bb4 {[%emt 0:00:00]} 4. e3 {[%emt 0:00:00]} O-O
{[%emt 0:00:00]} 5. Bd3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 6. cxd5 {[%emt 0:
00:00]} exd5 {[%emt 0:00:00]} 7. Nge2 {[%emt 0:00:00]} Re8 {[%emt 0:00:01]} 8.
Bd2 {[%emt 0:00:00]} Bd6 {[%emt 0:00:42]} 9. Rc1 {[%emt 0:00:02]} c6 {[%emt 0:
01:58]} 10. O-O {[%emt 0:00:04]} Na6 {[%emt 0:01:42]} 11. f3 {[%emt 0:00:36]}
c5 {[%emt 0:00:15]} 12. Kh1 {[%emt 0:00:40]} Nc7 {[%emt 0:02:55]} 13. g4 {
[%emt 0:03:51]} b6 {[%emt 0:01:14]} 14. Ng3 {[%emt 0:00:07]} g6 {[%emt 0:02:26]
} 15. Nce2 {[%emt 0:01:16]} Bb7 {[%emt 0:00:45]} 16. g5 {[%emt 0:02:17]} Nd7 {
[%emt 0:00:03]} 17. h4 {[%emt 0:00:07]} Nf8 {[%emt 0:01:56]} 18. Kg2 {[%emt 0:
00:29]} Ba6 {[%emt 0:00:37]} 19. Bxa6 {[%emt 0:01:00]} Nxa6 {[%emt 0:00:00]}
20. dxc5 {[%emt 0:00:27]} bxc5 {[%emt 0:00:36]} 21. e4 {[%emt 0:00:07]} d4 {
[%emt 0:01:55]} 22. Qa4 {[%emt 0:00:44]} Nc7 {[%emt 0:00:45]} 23. b4 {[%emt 0:
00:37]} Nce6 {[%emt 0:00:30]} 24. bxc5 {[%emt 0:00:13]} Bxc5 {[%emt 0:00:07]}
25. Rfd1 {[%emt 0:00:12]} Rb8 {[%emt 0:00:18]} 26. Bc3 {[%emt 0:01:02]} Qb6 {
[%emt 0:00:17]} 27. Ba1 {[%emt 0:00:53]} Red8 {[%emt 0:00:01]} 28. Rd3 {
[%emt 0:00:02]} Qb7 {[%emt 0:00:26]} 29. Rcd1 {[%emt 0:00:52]} Bb6 {[%emt 0:00:
05]} 30. Qb4 {[%emt 0:00:31]} Qa6 {[%emt 0:00:11]} 31. Qa3 {[%emt 0:00:50]} Qc4
{[%emt 0:00:07]} 32. f4 {[%emt 0:00:31]} Qc6 {[%emt 0:00:09]} 33. Qc1 {[%emt 0:
00:14]} Qb7 {[%emt 0:00:16]} 34. Kh2 {[%emt 0:00:08]} Rbc8 {[%emt 0:00:05]} 35.
Qb2 {[%emt 0:00:11]} Qc7 {[%emt 0:00:11]} 36. Rc1 {[%emt 0:01:22]} Qb8 {
[%emt 0:00:11]} 37. Rf1 {[%emt 0:00:01]} Bc7 {[%emt 0:00:14]} 38. Qd2 {[%emt 0:
00:19]} Qb5 {[%emt 0:00:09]} 39. Rb3 {[%emt 0:00:16]} Qa6 {[%emt 0:00:05]} 40.
f5 {[%emt 0:00:15]} Nc5 {[%emt 0:00:06]} 41. fxg6 {[%emt 0:00:23]} hxg6 {
[%emt 0:00:02]} 42. Rbf3 {[%emt 0:00:10]} Nxe4 {[%emt 0:00:01]} 43. Qb2 {
[%emt 0:00:21]} Be5 {[%emt 0:00:37]} 44. Kg2 {[%emt 0:00:21]} Nxg3 {[%emt 0:00:
11]} 45. Nxg3 {[%emt 0:00:02]} Qc6 {[%emt 0:00:09]} 46. Kg1 {[%emt 0:00:25]}
Rb8 {[%emt 0:00:10]} 47. Qf2 {[%emt 0:00:05]} Qd5 {[%emt 0:00:10]} 48. h5 {
[%emt 0:00:16]} Ne6 {[%emt 0:00:04]} 49. Qd2 {[%emt 0:00:18]} d3 {[%emt 0:00:
13]} 50. Bxe5 {[%emt 0:00:18]} Qxe5 {[%emt 0:00:02]} 51. hxg6 {[%emt 0:00:00]}
fxg6 {[%emt 0:00:02]} 52. Re3 {[%emt 0:00:19]} Qxg5 {[%emt 0:00:04]} 53. Rfe1 {
[%emt 0:00:17]} Nf4 {[%emt 0:00:15]} 54. Kh2 {[%emt 0:00:05]} Qh4+ {[%emt 0:00:
14]} 55. Kg1 {[%emt 0:00:01]} Nh3+ {[%emt 0:00:26]} 56. Kg2 {[%emt 0:00:03]}
Nf4+ {[%emt 0:00:01]} 57. Kg1 {[%emt 0:00:00]} Rf8 {[%emt 0:00:01]} 58. Rf1 {
[%emt 0:00:33]} Nh3+ {[%emt 0:00:22]} 59. Kg2 {[%emt 0:00:01]} Nf4+ {[%emt 0:
00:01]} 60. Kg1 {[%emt 0:00:00]} Ne2+ {[%emt 0:00:06]} 61. Nxe2 {[%emt 0:00:18]
} Rxf1+ {[%emt 0:00:03]} 62. Kxf1 {[%emt 0:00:00]} Rf8+ {[%emt 0:00:22]} 63.
Kg2 {[%emt 0:00:21]} Rf2+ {[%emt 0:00:05]} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "15.4"]
[White "Nakamura, Hikaru"]
[Black "Shankland, Sam"]
[Result "0-1"]
[ECO "B67"]
[WhiteElo "2736"]
[BlackElo "2691"]
[Annotator "RC"]
[PlyCount "115"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "900+10"]

1. e4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d6 {[%emt 0:
00:00]} 3. d4 {[%emt 0:00:00]} cxd4 {[%emt 0:00:00]} 4. Nxd4 {[%emt 0:00:00]}
Nf6 {[%emt 0:00:00]} 5. Nc3 {[%emt 0:00:01]} Nc6 {[%emt 0:00:00]} 6. Bg5 {
[%emt 0:00:01]} e6 {[%emt 0:00:00]} 7. Qd2 {[%emt 0:00:02]} a6 {[%emt 0:00:00]}
8. O-O-O {[%emt 0:00:01]} Bd7 {[%emt 0:00:00]} 9. f3 {[%emt 0:00:01]} Nxd4 {
[%emt 0:00:02]} 10. Qxd4 {[%emt 0:00:02]} Be7 {[%emt 0:00:01]} 11. h4 {[%emt 0:
00:10]} Qc7 {[%emt 0:00:09]} 12. Qd2 {[%emt 0:00:20]} b5 {[%emt 0:00:09]} 13.
Kb1 {[%emt 0:00:02]} b4 {[%emt 0:00:18]} 14. Ne2 {[%emt 0:00:06]} a5 {[%emt 0:
00:01]} 15. c4 {[%emt 0:00:17]} bxc3 {[%emt 0:00:09]} 16. Nxc3 {[%emt 0:00:06]}
Rb8 {[%emt 0:00:04]} 17. a4 {[%emt 0:00:18]} h6 {[%emt 0:00:29]} 18. Be3 {
[%emt 0:01:51]} O-O {[%emt 0:00:05]} 19. Nb5 {[%emt 0:00:09]} Qb7 {[%emt 0:00:
21]} 20. Bd3 {[%emt 0:01:34]} Rfc8 {[%emt 0:01:51]} 21. Rc1 {[%emt 0:00:15]} d5
{[%emt 0:00:20]} 22. e5 {[%emt 0:01:21]} Bb4 {[%emt 0:00:45]} 23. Qf2 {[%emt 0:
00:45]} Ne8 {[%emt 0:00:06]} 24. Ba7 {[%emt 0:00:24]} Rxc1+ {[%emt 0:01:30]}
25. Rxc1 {[%emt 0:00:00]} Rc8 {[%emt 0:00:00]} 26. Rxc8 {[%emt 0:00:40]} Qxc8 {
[%emt 0:00:08]} 27. h5 {[%emt 0:00:30]} Kf8 {[%emt 0:01:37]} 28. g4 {[%emt 0:
00:37]} Qc6 {[%emt 0:01:04]} 29. Bb6 {[%emt 0:00:24]} Bc8 {[%emt 0:01:41]} 30.
Na7 {[%emt 0:03:06]} Qxa4 {[%emt 0:00:03]} 31. Qe2 {[%emt 0:00:10]} Qd7 {
[%emt 0:00:20]} 32. Qc2 {[%emt 0:00:03]} Bb7 {[%emt 0:00:23]} 33. Bb5 {[%emt 0:
00:17]} Qe7 {[%emt 0:00:02]} 34. Qh7 {[%emt 0:02:18]} f6 {[%emt 0:00:07]} 35.
Qh8+ {[%emt 0:00:05]} Kf7 {[%emt 0:00:02]} 36. Bd3 {[%emt 0:00:00]} Qf8 {
[%emt 0:00:23]} 37. Qh7 {[%emt 0:01:02]} fxe5 {[%emt 0:02:50]} 38. Bd8 {
[%emt 0:00:25]} e4 {[%emt 0:00:02]} 39. fxe4 {[%emt 0:00:05]} Qd6 {[%emt 0:01:
02]} 40. Bh4 {[%emt 0:02:11]} dxe4 {[%emt 0:00:19]} 41. Bc2 {[%emt 0:00:02]}
Qa6 {[%emt 0:01:05]} 42. g5 {[%emt 0:01:28]} hxg5 {[%emt 0:00:25]} 43. Bxg5 {
[%emt 0:00:03]} Qxa7 {[%emt 0:00:59]} 44. Qg6+ {[%emt 0:00:06]} Kf8 {[%emt 0:
00:02]} 45. h6 {[%emt 0:00:05]} Qg1+ {[%emt 0:00:59]} 46. Ka2 {[%emt 0:00:01]}
Bd5+ {[%emt 0:00:00]} 47. b3 {[%emt 0:00:05]} Qf2 {[%emt 0:00:09]} 48. Kb1 {
[%emt 0:00:04]} Bc3 {[%emt 0:00:25]} 49. Bc1 {[%emt 0:00:08]} gxh6 {[%emt 0:00:
14]} 50. Qxh6+ {[%emt 0:00:03]} Kg8 {[%emt 0:00:14]} 51. Qg5+ {[%emt 0:00:07]}
Ng7 {[%emt 0:00:04]} 52. Qd8+ {[%emt 0:00:03]} Qf8 {[%emt 0:00:02]} 53. Qc7 {
[%emt 0:00:01]} Bf6 {[%emt 0:00:18]} 54. Qxa5 {[%emt 0:00:03]} Nf5 {[%emt 0:00:
08]} 55. Ba3 {[%emt 0:00:10]} Qc8 {[%emt 0:00:10]} 56. Bc5 {[%emt 0:00:03]} Nd4
{[%emt 0:00:21]} 57. Bd1 {[%emt 0:00:17]} Nxb3 {[%emt 0:00:24]} 58. Bxb3 {
[%emt 0:00:05]} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "15.5"]
[White "Vidit, Santosh Gujrathi"]
[Black "Bluebaum, Matthias"]
[Result "1/2-1/2"]
[ECO "D24"]
[WhiteElo "2726"]
[BlackElo "2670"]
[Annotator "TA"]
[PlyCount "99"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,99,29,46,39,47,35,58,54,60,20,33,29,30,25,30,0,0,34,68,79,83,89,106,
50,64,28,98,87,97,34,156,118,120,125,171,183,185,175,143,127,174,122,164,144,
135,130,104,43,74,35,104,106,89,72,94,85,105,24,82,97,73,72,114,21,33,21,18,21,
19,33,41,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 e6 3. Nc3
Nf6 4. Nf3 dxc4 5. e4 b5 6. e5 {D24: Queen's Gambit Accepted: 3 Nf3 Nf6 4 Nc3.}
Nd5 7. Nxb5 Nb6 8. Be2 {White is slightly better.} Nc6 9. a3 Be7 10. Be3 O-O
11. Qc2 Rb8 12. h4 {[#]} f5 $146 ({Predecessor:} 12... h6 13. Rd1 Ba6 14. Nc3
Nd5 15. Bc1 Nxc3 16. bxc3 Qd5 17. Rh3 f5 18. exf6 Rxf6 {1/2-1/2 (46) Sarana,A 
(2655)-Korobov,A (2679) Douglas 2019}) 13. exf6 gxf6 14. Nc3 Rf7 15. Rd1 Na5
16. Ne4 (16. h5 $16) 16... Bb7 $14 17. Rg1 Nd5 (17... Bc6 $11) 18. Bd2 $16 Nb3
19. Bh6 ({But not} 19. Qxc4 Nxd2 20. Nexd2 Nf4 $11) ({White should play} 19.
Bxc4 $16 Nxd2 20. Rxd2) 19... Ba6 (19... c5 $14) 20. Bxc4 Bxc4 21. Qxc4 Bf8 22.
Bxf8 Qxf8 23. Rd3 Na5 24. Qc2 Rb6 25. g3 (25. g4 $18) 25... Qe8 26. Nc5 Qb5 27.
b3 Nb7 28. Nd2 ({Better is} 28. Kf1 $16) 28... Rc6 29. Qc4 Qb6 (29... Qxc4 $14
30. Nxc4 (30. bxc4 Nxc5 31. dxc5 Rxc5 $11) 30... Nxc5 31. dxc5 Rxc5) 30. b4 a5
{[%cal Ra5b4] [#]} 31. Rb3 {aiming for bxa5.} axb4 32. axb4 Nd6 33. Qd3 ({
White should try} 33. Qe2 $16) 33... Re7 (33... Qb5 $11 {keeps the balance.})
34. b5 Rxc5 35. dxc5 Qxc5 {[#] White must now prevent ...Qc1+.} 36. Ke2 (36.
Rb1 $1 $16) 36... e5 $11 37. Ne4 Nxe4 38. Qxe4 {Hoping for Kf1.} Nc3+ {[#]} 39.
Rxc3 $1 Qxc3 {[%mdl 4096] Endgame KQR-KQR} 40. Rd1 Qb2+ {The position is equal.
} 41. Kf3 {Strongly threatening Qg4+.} Qxb5 42. Rd8+ Re8 43. Qg4+ Kh8 44. Rd7 {
[%csl Gd7][%cal Rg4g7]} Qc6+ 45. Ke2 {[%csl Gd7][%cal Rg4g7]} Rg8 46. Qf5 {
[%csl Gf5][%cal Rd7h7]} Rg7 47. Rd8+ Rg8 48. Rd7 {[%csl Gf5][%cal Rd7h7]} Rg7
49. Rd8+ Rg8 50. Rd7 {[%csl Gf5][%cal Rd7h7] Black escapes into a draw. 
Weighted Error Value: White=0.21/Black=0.20} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "15.6"]
[White "Radjabov, Teimour"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "E46"]
[WhiteElo "2765"]
[BlackElo "2781"]
[Annotator "TA"]
[PlyCount "73"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,73,-12,-11,-12,-4,-14,-14,-10,-9,-18,-7,-41,-25,-20,-20,-18,-8,0,-7,
-8,-8,-8,-8,-11,-12,-12,-6,-6,0,-11,-9,-8,0,-5,0,0,0,0,0,-4,0,0,0,-4,-4,-4,-4,
-4,-4,-4,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5.
Nge2 Re8 6. a3 Bf8 7. Ng3 d5 8. Bd3 {E46: Nimzo-Indian: Rubinstein: 4 e3 0-0 5
Ne2 without early Bd3.} c5 9. dxc5 dxc4 10. Bxc4 Qxd1+ 11. Kxd1 Bxc5 12. Nge4 (
12. Ke2 {looks sharper.} Be7 13. Rd1 a6 14. Nce4 Nbd7 15. a4) 12... Nxe4 13.
Nxe4 Be7 {[#] The position is equal.} 14. Bd2 $146 ({Predecessor:} 14. Ke2 Bd7
15. Nc3 Rc8 16. Bd3 Na6 17. Bd2 Nc5 18. Bc2 Bc6 19. f3 Bf6 20. Rac1 a5 21. b4
axb4 22. axb4 Bxc3 23. Bxc3 Bb5+ 24. Kf2 Nd3+ {1/2-1/2 (24) Werle,J (2527)
-Sadler,M (2684) Haarlem 2017}) 14... b6 15. Bc3 Bb7 16. Bd3 Rd8 17. Ke2 Na6 {
Hoping for ...Rxd3!} 18. f3 f5 19. Nf2 Nc5 {Strongly threatening ...Rxd3!} 20.
Bc4 Kf7 21. Nd3 Nxd3 22. Bxd3 Rac8 23. Rac1 Bf6 24. Bxf6 Kxf6 25. h4 g6 26.
Rhd1 h6 27. Rxc8 Rxc8 $11 {[%mdl 4096] Endgame KRB-KRB} 28. Rd2 g5 29. hxg5+
hxg5 30. Rc2 Rxc2+ 31. Bxc2 {KB-KB} f4 32. Kf2 e5 33. g3 Bc6 34. Bd1 Bb7 35.
Bc2 Bc6 36. Bd1 Bb7 37. Bc2 {A rather calm draw.  Weighted Error Value:
White=0.03/Black=0.02} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "15.7"]
[White "Ding, Liren"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2791"]
[BlackElo "2770"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,51,51,44,24,22,17,18,28,23,32,32,20,1,4,11,13,12,29,36,36,30,27,33,
24,31,19,17,0,0,0,6,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3
Nf6 5. d3 O-O 6. O-O d5 7. exd5 Nxd5 8. a4 {C54: Giuoco Piano: 4 c3 Nf6, main
lines with 5 d4 and 5 d3.} a5 9. Nbd2 Nb6 10. Bb5 Bd6 11. Ne4 Bg4 12. h3 Bh5
13. Re1 Na7 14. d4 exd4 15. Nxd6 ({Much weaker is} 15. cxd4 Nxb5 16. axb5 Bb4
$15) 15... Qxd6 16. Qxd4 Nxb5 17. axb5 Qxd4 18. Nxd4 Bg6 {[#]} 19. f4 $146 {
[#] Strongly threatening f5.} ({Predecessor:} 19. Bf4 Rfc8 20. Bg3 a4 21. Re7
Nc4 22. b3 axb3 23. Rxa8 Rxa8 24. Nxb3 Rc8 25. Rxc7 Rxc7 26. Bxc7 {1/2-1/2 (35)
Nepomniachtchi,I (2784)-Leko,P (2663) chess24.com INT 2020}) 19... f5 {The
position is equal.} 20. Re5 a4 21. Rc5 Rac8 22. Be3 Nd7 23. Rd5 Nb6 {[%cal
Rb6d5]} 24. Rc5 Nd7 25. Rd5 Nb6 {[%cal Rb6d5]} 26. Rc5 {Weighted Error Value:
White=0.04/Black=0.01} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "15.8"]
[White "Carlsen, Magnus"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2862"]
[BlackElo "2784"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2021.02.02"]
[EventType "tourn"]
[EventCountry "NET"]
[Tiebreak "Koya+Number of black wins+Number of wins"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,64,0,14,0,0,0,0,-8,0,-15,0,-37,-22,-22,-22,-22,-22,-19,-22,-54,-46,
-50,-50,-50,-54,-45,-58,-65,-32,-69,-43,-69,-30,-38,-29,-29,-29,-29,-29,-29,
-29,-29,0,-29,0,-29,0]} 1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. cxd5 cxd5 6.
Nf3 Bg7 7. Ne5 Ne4 8. Nd2 Nd7 9. Nxe4 dxe4 10. O-O O-O 11. Nxd7 {D79:
Fianchetto Grünfeld: Symmetrical Variation (6 0-0 c6 7 cxd5 cxd5).} Bxd7 12.
Bxe4 Bh3 13. Re1 {The position is equal.} Bxd4 {[#]} 14. Qb3 $146 ({Not} 14.
Bxb7 $2 Qb6 $19) ({Predecessor:} 14. Bh6 Re8 15. Rb1 Qb6 16. e3 Bg7 17. Bxg7
Kxg7 18. Qf3 Rab8 19. Rbc1 Red8 20. Bd5 {0-1 (44) Jones,B (2228)-Adam,C (2310)
ICCF email 2006}) 14... Be6 15. Qf3 Qb6 16. Be3 Bxe3 ({Wrong is} 16... Qxb2 $2
17. Rab1 $18) 17. Qxe3 Qxe3 18. fxe3 Rac8 19. Rac1 b6 20. a3 Rxc1 21. Rxc1 Rc8
22. Rxc8+ Bxc8 $15 {[%mdl 4096] Endgame KB-KB} 23. Kf2 Bd7 24. Bd5 e6 25. Bc4
Kf8 26. e4 e5 27. Ke3 f6 28. b4 g5 29. Bd3 Be8 30. Bc4 Bd7 31. Bd3 Be8 32. Bc4
Bd7 {Weighted Error Value: White=0.09/Black=0.09} 1/2-1/2

