[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "6.1"]
[White "Dubov, Daniil"]
[Black "Nakamura, Hikaru"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2710"]
[BlackElo "2736"]
[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 21,80,7,13,12,11,2,18,18,28,24,24,7,27,30,26,0,9,0,0,7,8,0,0,-6,0,-12,0,
-35,-19,-10,-10,-6,-6,-15,0,0,0,0,0,0,0,0,0,-26,-26,-26,-26,-26,-26,-26,0,0,6,
6,6,6,6,6,7,0,5]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4
7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bg5 Nbd7 11. Nc3 h6 12. Bxf6 {E05: Open
Catalan: 5 Nf3 Be7.} Nxf6 13. Rfd1 $1 {[%mdl 4] is recently more successful
than 13.b4.} Bd6 $5 {[%mdl 4] Leaves trodden paths.} 14. Ne5 Bxg2 15. Kxg2 Qe7
16. Nf3 Bb4 17. Na2 Bd6 18. Rac1 a5 19. Re1 c6 20. Nc3 Bb4 21. e4 Rfd8 22. Qe2
c5 23. dxc5 Rac8 24. e5 Bxc3 25. Rxc3 Nd5 26. Rc4 Rxc5 27. Rec1 Rdc8 28. b3 Nb6
29. Rxc5 Rxc5 30. Rxc5 Qxc5 31. Qe4 Nd5 32. Nd2 Qc3 33. Nc4 Qxb3 34. Nxa5 Qb6
35. Nc4 Qc7 (35... Qc6 {is interesting.} 36. Nd2 g6 37. Nf3 Qc3 38. Qh4 Kh7)
36. Nd6 {The position is equal.} Nc3 37. Qxb7 Qxb7+ 38. Nxb7 {[#] Black must
now prevent a5.} Nxa4 39. Kf3 Kf8 40. Ke4 Nc3+ {A rather calm draw. Accuracy:
White = 92%, Black = 96%.} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "6.2"]
[White "Vidit, Santosh Gujrathi"]
[Black "Nepomniachtchi, Ian"]
[Result "1/2-1/2"]
[ECO "D42"]
[WhiteElo "2726"]
[BlackElo "2789"]
[Annotator "TA"]
[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"]

{[%evp 22,174,17,5,20,0,0,0,14,20,58,18,47,30,59,34,39,27,22,-23,-17,-16,0,0,0,
0,0,0,0,-7,0,-5,-2,-2,0,0,0,-6,0,0,8,0,9,8,11,0,0,0,69,74,343,335,328,328,312,
251,274,212,212,41,49,16,71,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 c5 2. c4 Nf6
3. Nc3 d5 4. cxd5 Nxd5 5. e3 e6 6. d4 Nc6 7. Bd3 Be7 8. a3 cxd4 9. exd4 O-O 10.
O-O b6 11. Qc2 Nf6 12. Rd1 $1 {[%mdl 4] Threatening d5! 12.Rd1 is the recent
fashion.} h6 {[#] D42: Queen's Gambit Declined: Semi-Tarrasch: 5 cxd5 Nxd5 6
e3 Nc6 7 Bd3 .} 13. Be4 $146 ({Predecessor:} 13. d5 exd5 14. Nxd5 Nxd5 15. Qxc6
Be6 16. Qa4 Qc7 17. Bd2 Rad8 18. Rac1 Qb7 19. Qe4 g6 20. Bxh6 {1-0 (32)
Radjabov,T (2765)-Nepomniachtchi,I (2784) chess24.com INT 2020}) 13... Nxe4 14.
Qxe4 Qe8 15. Re1 Bd7 16. d5 exd5 17. Nxd5 Bd6 18. Qh4 Qd8 {[%cal Rd8h4]} 19.
Qh5 {And now Bxh6! would win.} Be6 20. Rd1 Bxd5 21. Qxd5 {[%mdl 64] Double
Attack} Bc5 22. b4 Qxd5 23. Rxd5 Rad8 24. Rxd8 Rxd8 25. Bf4 (25. Kf1 {with
more complications.} Bd6 26. Bb2 f6 27. g3 Bb8 28. Rc1) 25... Bd4 26. Nxd4 Nxd4
$11 {[%mdl 4096] Endgame KRB-KRN} 27. Kf1 g5 28. Bc7 Re8 29. g4 Nc2 30. Ra2 {
[%cal Ra2c2]} Re1+ 31. Kg2 Re2 {Threatens to win with ...Ne1+.} 32. Kg3 b5 33.
Bb8 a6 34. Ba7 Kh7 (34... Rd2 $11) 35. Be3 $1 $14 Kg6 $2 {[%mdl 8192] [#]} (
35... Nd4 $16 36. Rxe2 Nxe2+ 37. Kf3 Nc3) 36. Rb2 $1 $18 Rxe3+ 37. fxe3 Nxe3 {
KR-KN} 38. h3 h5 39. Kf3 Nc4 40. Ra2 (40. Re2 $18) 40... hxg4+ $14 41. hxg4 {
Strongly threatening Ke4.} f5 {[#]} 42. gxf5+ ({White should try} 42. a4 $1 $16
{[%cal Ra4b5]}) 42... Kxf5 $11 {The position is equal.} 43. a4 Ke5 44. axb5
axb5 45. Rg2 Kf5 46. Re2 g4+ 47. Kg3 Ne5 48. Rd2 Ke4 49. Rd6 Nd3 50. Rb6 Nxb4
51. Rxb5 Nd5 52. Kxg4 (52. Rb7 {is interesting.} Ne3 53. Re7+ Kd4 54. Rf7 Nd5
55. Rf8) 52... Ne3+ 53. Kg5 Nd5 54. Rb8 Ke5 55. Rd8 Ke4 56. Re8+ Kd4 57. Kf5
Ne3+ 58. Kf4 Nd5+ 59. Kf3 Nc3 60. Rd8+ Nd5 61. Rd7 Ke5 62. Rh7 Kd4 63. Rh5 Nc3
64. Rh8 Nd5 65. Rd8 Ke5 66. Ke2 Ke4 67. Re8+ Kd4 68. Kf3 Nc3 69. Re1 Nd5 70.
Rd1+ Ke5 71. Rd2 Nf4 72. Ra2 Nd5 73. Ra4 Nc3 74. Rc4 Nd5 75. Re4+ Kd6 76. Rh4
Ke5 77. Ke2 Nf4+ 78. Kd2 Nd5 79. Ra4 Nf4 80. Ke3 {White threatens Re4+ and
mate.} Nd5+ 81. Kf3 Nf6 82. Ra5+ Nd5 83. Rb5 Kd4 84. Rb8 Ke5 85. Re8+ Kd4 86.
Rd8 Ke5 87. Rxd5+ Kxd5 {Black escapes into a draw.  Weighted Error Value:
White=0.15/Black=0.12} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "6.3"]
[White "Radjabov, Teimour"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2765"]
[BlackElo "2764"]
[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 20,80,29,25,12,0,0,0,0,0,0,0,0,0,3,0,0,0,0,0,0,0,0,0,17,6,11,3,4,3,4,3,
3,3,3,4,11,0,11,0,0,0,0,0,0,0,7,6,7,7,7,7,7,7,7,7,7,0,7,0,7,0,12]} 1. d4 Nf6 2.
c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 O-O 8. Rc1 dxc4 9. Bxc4
c5 10. O-O cxd4 11. Nxd4 Bd7 {D38: Queen's Gambit Declined: Ragozin Defence (4
Nf3 Bb4).} 12. Qb3 {The position is equal.} (12. Ne4 {seems wilder.} Qe5 13.
Be2 Rd8 14. Qb3 a5 15. Nc3) 12... Nc6 13. Nxc6 Bxc3 14. Qxc3 {[#] Ne5 is the
strong threat.} Bxc6 15. Qxf6 gxf6 16. Rfd1 Rfd8 17. f3 f5 18. Kf2 Kg7 19. Ke1
Kf6 20. Rxd8 Rxd8 $11 {[%mdl 4096] [#] Endgame KRB-KRB} 21. Be2 $146 ({
Predecessor:} 21. b4 a6 22. Be2 Rg8 23. Kf2 Rd8 24. Ke1 Rg8 25. Kf1 Rd8 26. Ke1
Rg8 27. Kf2 Rd8 28. Rd1 Rc8 29. Rc1 Rd8 30. Rd1 Rc8 31. Rc1 Rd8 32. Rd1 Rc8 {
1/2-1/2 (32) Rotaru,I (2261)-Stojanovic,N ICCF email 2018}) 21... Rd6 22. Rd1 (
22. a3 {is interesting.} Rd5 23. b4 Re5 24. Kf2 Rd5 25. Rd1) 22... Rxd1+ 23.
Kxd1 {KB-KB} e5 24. Kd2 f4 25. Bd3 b6 26. Ke2 Bd5 27. a3 Ke6 28. Kf2 Kf6 29. g3
fxg3+ 30. Kxg3 Kg5 31. h4+ Kf6 32. f4 Be6 33. Kf3 exf4 34. Kxf4 Ke7 35. Ke5 f6+
36. Kd4 Kd6 37. Be2 Bd7 38. Bd3 Be6 39. Be2 Bd7 40. Bd3 Be6 {An uneventful
encounter.  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 "6.4"]
[White "Ding, Liren"]
[Black "Grischuk, Alexander"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "2791"]
[BlackElo "2777"]
[Annotator "TA"]
[PlyCount "147"]
[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 16,147,24,15,14,0,8,14,11,22,14,18,9,5,9,4,41,-12,-10,-18,-2,-11,-16,
-47,0,0,0,0,0,-41,0,0,0,0,0,0,0,4,64,64,64,64,64,64,64,64,75,0,0,0,0,0,0,0,0,0,
0,0,279,285,670,670,616,390,413,397,435,336,375,365,344,251,252,250,476,505,
476,460,548,537,535,536,507,447,412,132,147,67,531,501,491,449,381,249,200,136,
100,-5222,195,118,95,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-12844,-12844,
-12845,-12845,-12849,-12849,-12850,-12846,-12846,-12847,-12847,-12847,-12850]} 
1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. Rb1 e6 6. a3 Nge7 7. b4 d6 8. Nf3
O-O 9. O-O b6 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7.} 10. e3 Bb7 11.
Qb3 Qd7 {The position is equal.} 12. Bb2 Ne5 $5 {[%mdl 4] A promising side
line.} 13. Nxe5 Bxe5 14. Bxb7 Qxb7 {[#]} 15. d3 $146 ({Predecessor:} 15. Nb5
Bxb2 16. Qxb2 Rfd8 17. Qf6 Rac8 18. d3 a6 19. Nc3 cxb4 20. axb4 b5 21. cxb5
axb5 {1/2-1/2 (39) Eljanov,P (2718)-Dominguez Perez,L (2746) Havana 2015})
15... Nc6 16. b5 (16. f4 $14 Bxc3 17. Bxc3 (17. Qxc3 f6 $11)) 16... Na5 $11 17.
Qa2 Rad8 18. Ne4 f5 19. Ng5 Qe7 (19... Rfe8 {looks sharper.} 20. f4 Bxb2 21.
Rxb2 h6 22. Nf3 e5) 20. Bxe5 dxe5 21. Nf3 Qf6 22. Qc2 Rd6 23. Qc3 e4 24. Qxf6
Rxf6 25. dxe4 Rf8 26. Rfc1 h6 (26... fxe4 $11 27. Ng5 Rd3) 27. exf5 $14 exf5
28. Kf1 Rfd8 29. Ke2 Kg7 30. Rc2 g5 31. h4 (31. Ne5 $16) 31... g4 $11 32. Ne1
Kf7 33. a4 R8d7 34. Ng2 Rd3 35. Ra1 Rb3 36. Nf4 Rb4 $2 {[%mdl 8192]} (36... Rd6
$11 {and Black is okay.}) 37. Nd3 $18 Ke6 $2 (37... Rxd3 38. Kxd3 Ke6) 38. Nxb4
cxb4 {[%mdl 4096] Endgame KRR-KRN} 39. Rd1 Rc7 40. Rd4 Nb3 41. Rd5 Nc5 42. Rcd2
Ne4 43. R2d4 b3 44. Kd3 Nxf2+ $2 (44... b2 45. Kc2 b1=Q+ {[%mdl 64] Decoy} 46.
Kxb1 Nc3+ 47. Kb2 Nxd5 48. cxd5+ Kd6) 45. Kc3 Ne4+ 46. Kxb3 Nxg3 {intending ...
Ne4.} 47. Rd6+ Ke5 48. Rxh6 Re7 {and the idea ...Nf1 leaves Black hopeful.} 49.
h5 Nf1 50. Rd5+ $2 (50. Kc3 $18 Nxe3 51. Rg6) 50... Ke4 $16 51. Rdd6 (51. a5
$16) 51... Ke5 $2 {[%mdl 8192]} ({Black should try} 51... Kf3 $1 $14) 52. Rhg6
$18 Nxe3 53. h6 $1 g3 54. Rd3 Kf4 55. Rg7 g2 56. Rd2 $2 {[%mdl 8192]} (56. Rxe7
$16 g1=Q 57. Rdxe3 Qd1+ 58. Kc3 Qc1+ 59. Kb3 Qd1+ 60. Kc3 Qc1+ 61. Kd3) 56...
Re6 $4 {[%mdl 8192]} (56... Rxg7 $19 57. Rxg2 Rxg2) 57. Rf2+ (57. h7 $18 Rh6
58. a5) 57... Ke4 $16 58. Rfxg2 (58. h7 $1 $16 {[%cal Rh7h8]} Rh6 59. Re7+ Kd3
60. Rxg2 Nxg2 61. Rxa7) 58... Nxg2 $11 59. Rxg2 {Re2+ would kill now.} Rxh6 $16
{KR-KR} 60. Rg7 f4 {Hoping for ...f3.} 61. Rxa7 Rf6 62. Kc3 (62. Re7+ {is
interesting.} Kd4 63. Rd7+ Ke3 64. a5 f3 65. axb6 f2 66. b7) 62... f3 63. Re7+
Kf4 {Threatens to win with ...f2.} 64. Re1 f2 65. Rf1 Ke3 {Strongly
threatening ...Rf3.} 66. c5 $1 {Black must now prevent Rxf2!} bxc5 {aiming for
...Rf4.} 67. a5 Rf4 $1 {[%cal Rf4b4]} ({Don't go for} 67... Ke2 $2 68. Rxf2+ $3
{[%mdl 512]} Rxf2 69. b6 $18) 68. Ra1 $2 {[%mdl 8192] [#]} (68. b6 $11 Rb4 69.
Ra1) 68... Ra4 $3 $19 {[%cal Ra4a1][%mdl 512] Black is clearly winning.} 69.
Rh1 (69. Rc1 Rxa5) 69... Rb4 70. Ra1 Rxb5 71. a6 Rb8 72. Kc4 Ra8 73. Kb5 c4 74.
Rb1 {Both players deserved the win here.  Weighted Error Value: White=0.40/
Black=0.60} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "6.5"]
[White "Carlsen, Magnus"]
[Black "Duda, Jan-Krzysztof"]
[Result "1/2-1/2"]
[ECO "A18"]
[WhiteElo "2862"]
[BlackElo "2743"]
[Annotator "TA"]
[PlyCount "74"]
[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 12,74,34,9,10,0,0,0,7,0,0,0,0,0,6,0,43,26,43,32,28,0,4,4,6,6,6,6,4,6,4,
7,4,14,8,4,6,6,12,4,4,0,0,0,26,-13,-9,-20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 
1. c4 e6 2. Nc3 Nf6 3. e4 d5 4. cxd5 exd5 5. e5 d4 6. exf6 dxc3 7. Qe2+ Be6 {
A18: English Opening: Flohr-Mikenas System (1 c4 Nf6 2 Nc3 e6 3 e4).} 8. dxc3
Qxf6 9. Nf3 Nd7 10. g3 Bc5 {[#]} 11. Bg2 $146 ({Predecessor:} 11. Ng5 O-O 12.
Nxe6 fxe6 13. Be3 Bxe3 14. Qxe3 Qe5 15. Qxe5 Nxe5 16. f4 Ng6 17. Bc4 {1/2-1/2 
(35) Brodsky,I (2348)-Saydaliev,S (2255) Moscow 2016}) 11... O-O 12. O-O Bd5
13. Re1 c6 14. Bf4 h6 15. Rad1 Rfd8 16. Ne5 (16. Nd2 {with more complications.}
g5 17. Bxd5 cxd5 18. Qg4 Qg6 19. Bc7) 16... Nxe5 17. Bxe5 Qe6 18. Bxd5 Rxd5 19.
Rxd5 Qxd5 20. c4 Qe6 21. Qd3 Re8 22. Bc3 Qc8 23. Rxe8+ Qxe8 24. Kg2 a6 25. h4
Qe6 26. b4 Be7 27. a4 Qg6 28. Qe2 (28. Qxg6 {looks sharper.} fxg6 29. Kf3 g5
30. h5 Kf7 31. Ke4) 28... Bxh4 {The position is equal.} 29. b5 Bf6 30. Bxf6
Qxf6 31. bxa6 bxa6 $11 {[%mdl 4096] Endgame KQ-KQ} 32. c5 Qe6 33. Qxa6 Qd5+ 34.
Kg1 Qd1+ 35. Kg2 Qd5+ 36. Kg1 Qd1+ 37. Kg2 Qd5+ {Weighted Error Value: White=0.
04/Black=0.05} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "6.6"]
[White "Vachier-Lagrave, Maxime"]
[Black "Dominguez Perez, Leinier"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2784"]
[BlackElo "2758"]
[Annotator "TA"]
[PlyCount "105"]
[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 33,105,31,38,9,10,6,0,0,0,14,12,14,21,12,41,30,21,6,59,21,11,11,26,19,
25,18,22,22,18,23,25,27,43,43,41,35,51,59,59,80,82,85,114,109,114,114,143,139,
1095,1109,1017,1109,1077,1044,992,958,735,733,29971,29973,29976,29976,29977,
29978,29977,29973,29979,29980,29982,29983,29984,29985,29985,29986]} 1. e4 c5 2.
Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9.
f4 Qb6 10. c4 Bb4+ 11. Ke2 f5 12. Nf2 Ba6 13. Kf3 Ne7 14. Be3 Bc5 15. Bxc5 Qxc5
16. Qd6 Qb6 17. b3 c5 {[#]} 18. h4 $1 $146 {[%mdl 8] A top novelty. B45:
Sicilian Four Knights.} ({Predecessor:} 18. Rd1 Bb7+ 19. Ke3 Qxd6 20. exd6 Ng6
21. h4 h5 22. Be2 Bxg2 23. Rhg1 Nxh4 24. Nd3 g5 25. fxg5 O-O 26. Kf2 Bc6 {
1/2-1/2 (34) Jakovenko,D (2698)-Mamedyarov,S (2772) Jerusalem 2019}) 18... Bb7+
19. Ke3 Nc8 20. Qxb6 {The position is equal.} axb6 21. Be2 d5 22. exd6 Nxd6 23.
a4 O-O 24. Rhd1 Rfd8 25. g3 Kf8 (25... e5 $11) 26. Nd3 {Threatens to win with
a5!} (26. a5 $5) 26... Be4 27. Ne5 Ke8 28. g4 Nf7 29. Nxf7 Kxf7 30. Rxd8 Rxd8
$11 {[%mdl 4096] Endgame KRB-KRB} 31. a5 bxa5 32. Rxa5 Rb8 33. Rb5 Rc8 34. g5
Rc7 35. b4 cxb4 36. Rxb4 Ke7 37. Ra4 Rb7 38. c5 Bc6 39. Ra6 Bd5 40. Rb6 Rxb6 $4
{[%mdl 8192] [#] A mistake that costs the game.} (40... Ra7 $16) 41. cxb6 $16 {
KB-KB} Kd6 42. Kd4 Kc6 43. Ke5 Kxb6 44. Kd6 Bb3 45. h5 h6 46. g6 {White mates.}
Bd5 47. Ke7 Kc5 48. Kf8 Kd4 49. Kxg7 e5 50. Kxh6 exf4 51. Kg5 {[%mdl 64]
Double Attack} f3 {[#]} 52. Bxf3 $1 {[%mdl 576] Promotion} Bxf3 53. h6 {
Weighted Error Value: White=0.03/Black=0.32} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "6.7"]
[White "So, Wesley"]
[Black "Shankland, Sam"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2770"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "49"]
[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 9,49,8,8,6,9,9,0,7,0,6,11,11,14,0,0,0,0,0,14,0,12,-30,0,0,0,0,0,0,0,0,
31,13,85,91,119,121,135,99,118,109,880,856]} 1. c4 c6 2. Nf3 d5 3. d4 Nf6 4. g3
Bf5 5. Nc3 e6 6. Nh4 {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4.}
dxc4 7. Nxf5 exf5 8. e3 {The position is equal.} Nbd7 9. Bxc4 {Threatens to
win with Qb3!} Nb6 10. Bb3 Qd7 11. Qf3 {[#]} Bd6 $146 ({Predecessor:} 11...
Nbd5 12. Nxd5 cxd5 13. Bd2 Be7 14. O-O O-O 15. Rfc1 Rac8 16. Kg2 g6 17. Qe2 a6
{1-0 (78) Lenderman,A (2640)-Krush,I (2422) Philadelphia 2019}) 12. Bd2 O-O 13.
h3 Bb4 14. Bc2 g6 15. O-O-O {[%cal Ba1d1,Bd1d2,Bd2c2][%mdl 32]} Nfd5 (15...
Bxc3 $5 16. Bxc3 Nbd5 $11) 16. Nxd5 Bxd2+ 17. Rxd2 {[#] Black must now prevent
Nf6+.} cxd5 18. Bd3 Rac8+ 19. Kb1 Nc4 20. Rc2 Rc6 {[#]} (20... Qb5 $11 21. Ka1
Qa5) 21. g4 $1 $16 Rfc8 22. gxf5 Qc7 {Hoping for ...Na3+.} 23. Ka1 Ne5 24. Rxc6
({But not} 24. dxe5 Rxc2 25. Bxc2 Qxc2 $11) 24... Qxc6 $4 {[%mdl 8192]} (24...
Nxf3 $16 25. Rxc7 Rxc7) 25. dxe5 {Accuracy: White = 89%, Black = 76%.} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "6.8"]
[White "Aronian, Levon"]
[Black "Bluebaum, Matthias"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2781"]
[BlackElo "2670"]
[Annotator "TA"]
[PlyCount "158"]
[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 13,158,0,18,18,24,16,24,6,12,0,0,0,0,0,0,-25,-22,-18,-14,-31,-16,-22,-6,
-29,-17,-50,-44,-46,-48,-38,-40,-64,-66,-61,-73,-46,-15,-20,18,26,36,30,26,-46,
-40,-154,-160,-134,-112,-129,-121,-98,-106,-212,-222,-209,-214,-196,-160,-127,
-67,-142,-137,-446,-445,-434,-435,-552,-517,-872,-850,-900,-842,-1472,-1353,
-2054,-1623,-2160,-2169,-2432,-2074,-2124,-2014,-2506,-1665,-2352,-2329,-1883,
-2017,-2203,-1872,-3141,-2556,-4133,-2341,-29969,-29970,-29959,-29948,-29948,
-29965,-29962,-29964,-29965,-29969,-29970,-29971,-29971,-29971,-29971,-29972,
-29973,-29974,-29976,-29977,-29978,-29977,-29980,-29977,-29978,-29976,-29976,
-29976,-29977,-29975,-29975,-29976,-29976,-29977,-29978,-29979,-29979,-29979,
-29979,0,-29979,-29979,-29979,-29980,-29980,-29981,-29981,-29981,-29981,-29982,
-29982,-29983]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7.
Be3 a6 8. Ne2 {C11: French: Classical System: 4 e5 and 4 Bg5 dxe4.} Qb6 9. Qc1
Be7 10. c3 {White has an edge.} O-O {[#]} 11. h4 $146 ({Predecessor:} 11. g3
cxd4 12. cxd4 f6 13. Bh3 fxe5 14. Bxe6+ Kh8 15. Bxd7 Bxd7 16. dxe5 d4 17. Nexd4
Nxd4 18. Bxd4 {1-0 (45) Motylev,A (2640)-Bluebaum,M (2644) Moscow 2019}) 11...
f6 12. h5 h6 13. Rh3 Qa5 (13... Rf7 {seems wilder.} 14. Rg3 Qa5 15. Qd2 cxd4
16. cxd4 Qxd2+ 17. Kxd2 Nb6) 14. Kf2 (14. Qc2 {looks sharper.} cxd4 15. Nexd4
fxe5 16. Nxc6 bxc6 17. fxe5 Qc7 18. Qg6) 14... cxd4 15. cxd4 fxe5 16. fxe5
Ndxe5 17. dxe5 Nxe5 18. Kg1 Ng4 19. Rg3 e5 20. Rxg4 {[%mdl 64] Remove Defender}
Bxg4 21. Nxe5 Bxh5 22. Nf4 {[#]} Rac8 $1 23. Qe1 Qxe1 24. Rxe1 Bb4 25. Rb1 d4
26. Bc1 Bf7 27. Nxf7 Rxf7 28. g3 (28. Nd3 $11 Bd6 29. Be2) 28... g5 $15 29. Nd5
(29. Nd3 $15 Bd6 30. Bh3) 29... Bd6 $36 {[%mdl 2048] Black is really pushing.}
30. b3 Rf3 {White must now prevent ...Rc2.} 31. Bg2 Rd3 32. Bb2 Rc2 33. Nf6+ (
33. Be4 $17 {was the only defense.} Rxg3+ 34. Kf1) 33... Kf7 $19 34. Ne4 Bxg3
35. Bxd4 Rxd4 36. Nxg3 Rxa2 (36... b5 $17 37. a3 Ra2 38. Rf1+ Ke6 39. Re1+ Kd7
40. Bh3+ Kc7) 37. Rf1+ {[#]} (37. Bxb7 $15 Rg4 38. Rf1+ Ke7 39. Rf3) 37... Rf4
$1 $17 {[%cal Rf4f1] ...Rxf1+ is the strong threat.} 38. Bxb7 $2 {[%mdl 8192]}
(38. Bd5+ $17 Kf8 39. Bxb7) 38... Rxf1+ $19 39. Kxf1 a5 40. Nf5 h5 41. Ng3 (41.
Bc6 $142 h4 42. Nd6+ Ke6 43. Ne4) 41... h4 42. Ne4 g4 43. Bc8 g3 44. Kg1 Kg6
45. Bh3 Rb2 46. Nc5 Kg5 47. Ne6+ Kf6 48. Nd4 Rf2 49. Nc6 Rh2 50. Bd7 Ra2 51.
Bh3 Kg5 52. Ne5 Rb2 53. Nf3+ Kf4 54. Nxh4 Rxb3 55. Bd7 Rb1+ 56. Kg2 Rb2+ 57.
Kg1 Ra2 58. Ng2+ Kg5 59. Ne3 a4 60. Nc4 Kf4 61. Bc6 a3 62. Nxa3 Rxa3 {[%mdl
4096] Endgame KR-KB} 63. Kg2 Ra2+ 64. Kg1 Rc2 65. Bd5 Rd2 66. Bb7 Ke5 67. Bc6
Rb2 68. Bf3 Ra2 69. Bc6 Kf4 70. Bd5 Rb2 71. Bc6 g2 72. Kh2 Ke3 73. Kg1 Kf4 74.
Kh2 $1 Rf2 {Black mates.} 75. Bd5 g1=Q+ 76. Kxg1 {[#]} Kg3 $1 77. Bg8 Rf6 78.
Bh7 Rf7 79. Bg8 Rg7 {Weighted Error Value: White=0.91/Black=0.17} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "7.1"]
[White "Bluebaum, Matthias"]
[Black "Dubov, Daniil"]
[Result "1/2-1/2"]
[ECO "D04"]
[WhiteElo "2670"]
[BlackElo "2710"]
[Annotator "TA"]
[PlyCount "146"]
[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 9,145,15,24,11,25,33,68,50,75,56,60,53,135,38,40,40,45,45,82,81,104,58,
80,47,48,55,61,70,65,12,21,6,15,-27,-18,-20,-32,-6,-12,-50,-15,-4,7,0,0,0,0,0,
6,8,8,7,9,4,10,8,7,4,6,6,6,6,6,6,7,6,7,0,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,226,226,262,220,95,101,385,416,398,281,288,288,288,0,0,0,
295,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,29975,0,29975,29975,29976,0,0,0]} 1. d4
Nf6 2. Nf3 d5 3. e3 c5 4. Nbd2 g6 5. dxc5 Bg7 6. c3 {D04: Colle System.} O-O 7.
b4 {[#]} Nfd7 $146 ({Predecessor:} 7... Ng4 8. Bb2 a5 9. a3 e5 10. h3 Nxe3 11.
fxe3 e4 12. Nxe4 axb4 13. axb4 Rxa1 14. Bxa1 dxe4 15. Qxd8 Rxd8 {1-0 (41) Petr,
M (2510)-Karpatchev,A (2475) Germany 2016}) 8. Bb2 {White is slightly better.}
b6 9. cxb6 a5 10. b5 a4 (10... Nxb6 $14 11. Be2 Qd6) 11. Rb1 ({White should try
} 11. Qc1 $16) 11... a3 $1 $14 {[%cal Ra3b2]} 12. Ba1 Nxb6 13. Be2 Bf5 14. Rc1
Na4 15. O-O Nd7 16. Nb3 {[%cal Bd2b3,Bb3d4,Bd4c6][%mdl 32]} Ndb6 17. Nbd4 $1
Bd7 18. Qb3 Nc5 19. Qb4 (19. Qc2 $14) 19... Qc7 $11 20. Nc6 Qd6 21. Qf4 Qxf4 $1
22. exf4 ({Not} 22. Nxe7+ $2 Kh8 $19) 22... Bxc6 23. bxc6 Rfc8 24. c4 Bxa1 ({
Of course not} 24... dxc4 $6 25. Bxg7 Kxg7 26. Bxc4 $14) 25. Rxa1 (25. cxd5 $2
Nb3 $1 $17) 25... Nxc4 26. Bxc4 dxc4 27. Rac1 Ra4 28. Ne5 Nd3 (28... Ne4 {
feels hotter.} 29. Rc2 c3 30. f3 Nd2 31. Rfc1 f6) 29. Nxd3 cxd3 {[%mdl 4096]
Endgame KRR-KRR} 30. Rfd1 Rd4 31. g3 Rd6 32. Rd2 Kg7 33. Rc3 Rcxc6 34. Rxc6
Rxc6 35. Rxd3 {KR-KR} Ra6 $1 36. Kg2 Kf6 37. Re3 h6 38. g4 g5 39. fxg5+ hxg5
40. Kg3 Ra4 41. h4 gxh4+ 42. Kxh4 e6 43. Kg3 Kg5 44. f3 f5 45. Rxe6 {Strongly
threatening Re5.} (45. gxf5 {with more complications.} Kxf5 46. Rb3 e5 47. Rb5
Kf6 48. Rb6+) 45... fxg4 46. Re5+ Kf6 47. f4 Rc4 48. Ra5 Rc1 49. Kxg4 {And now
Ra6+ would win.} Rg1+ 50. Kf3 Rf1+ 51. Kg3 (51. Ke2 {is interesting.} Rxf4 52.
Rxa3 Ke5 53. Rd3 Rg4 54. Re3+) 51... Rg1+ 52. Kf2 Rb1 (52... Rh1 $11) 53. Rxa3
$18 Kf5 54. Ra4 Rc1 (54... Rh1 $18 55. Kg3 Rg1+ 56. Kf3 Rf1+ 57. Ke3 Re1+ 58.
Kd3 Rf1) 55. Ke3 $16 Rc3+ $2 {[%mdl 8192]} (55... Re1+ $16 {might work better.}
56. Kd3 Rf1) 56. Kd4 $18 Rf3 57. Kc5 Rf2 58. a3 Rf3 {[#]} 59. Ra8 $2 (59. Ra6
$1 $18) 59... Ke6 $1 $11 60. Ra4 $2 {[%mdl 8192]} (60. Kc6 $11 Rxf4 61. a4 Rc4+
62. Kb5) 60... Kf5 $18 {[#]} 61. Ra7 $2 (61. Ra6 $1 $18) 61... Ke6 $11 62. a4 {
a5 is the strong threat.} (62. Ra6+ {looks sharper.} Ke7 63. Ra4 Ke6 64. Ra8
Ke7 65. Ra4) 62... Rxf4 63. a5 Rf1 64. Rh7 {Hoping for a6.} Rc1+ 65. Kb6 Kd6 $1
66. Rh6+ Kd7 $1 67. Kb7 {aiming for a6.} Rc7+ 68. Kb6 {Threatening mate with
Rh7+.} Rc1 69. Rh7+ Kc8 $2 {[%mdl 8192]} (69... Kd6 $11) 70. Rh8+ Kd7 {If
Black can now play ...Rb1+ this consolidates a bit.} 71. a6 Rb1+ 72. Ka7 $2 (
72. Kc5 {mates} Rc1+ 73. Kd5 Rd1+ 74. Ke4 Re1+ 75. Kd3 Rd1+ 76. Kc2 Rf1 77. a7)
72... Kc7 73. Rb8 Rxb8 {Weighted Error Value: White=0.17/Black=0.21} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "7.2"]
[White "Shankland, Sam"]
[Black "Aronian, Levon"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2691"]
[BlackElo "2781"]
[Annotator "TA"]
[PlyCount "130"]
[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 12,130,19,7,20,16,30,21,25,20,35,32,37,0,7,0,16,6,0,0,29,0,0,10,35,27,
38,35,81,74,74,84,75,79,76,0,0,0,0,0,1,0,0,0,0,0,19,8,8,8,11,0,0,0,0,-52,-42,
-241,-229,-313,-336,-339,-336,-345,-345,-470,-212,-205,-62,-613,-583,-919,-754,
-1017,-949,-1668,-1473,-1459,-1459,-1452,-1262,-1398,-8,-8,-8,-8,-8,-8,-8,-8,
-8,-8,-8,-8,-8,-8,-8,-8,0,-8,0,-8,0,0,0,0,0,-29980,-29981,-29981,-29982,-29982,
-29983,-29983,-29984,-29984,-29985,-29987,-29988,-29988,-29989]} 1. d4 Nf6 2.
c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. cxd5 exd5 6. Bg5 h6 7. Bh4 O-O {D38: Queen's
Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 8. e3 Bf5 9. Qb3 Bxc3+ {The
position is equal.} 10. Qxc3 {The modern move.} g5 $5 {[%mdl 4] An interesting
side line.} 11. Bg3 Ne4 12. Qa3 {[#]} (12. Bxc7 $2 Qe7 $19) 12... Nd7 $1 $146 {
[%cal Bb8d7,Bd7f6,Bf6e4][%mdl 8] A top novelty.} ({Predecessor:} 12... Nc6 13.
Bb5 Ne7 14. Nd2 c6 15. Bd3 Nxd2 16. Kxd2 Bxd3 17. Qxd3 Qa5+ 18. Ke2 f5 {
0-1 (67) Carlsen,M (2876)-Firouzja,A (2702) chess24.com INT 2020}) 13. Bd3 Re8
14. Nd2 Ndf6 15. Nxe4 Bxe4 16. O-O Bxd3 17. Qxd3 Ne4 18. Be5 c6 19. f3 Nc5 20.
Qf5 ({Don't play} 20. dxc5 Rxe5 21. f4 Re4 $15) 20... Qe7 21. f4 Ne4 {next ...
f6 is good for Black.} 22. fxg5 hxg5 23. Rf3 (23. Qg4 $1 $16 {Rf6! is the
strong threat.} f6 24. Bxf6 $1 {[%mdl 64] Remove Defender, Decoy} Nxf6 25.
Qxg5+ {[%mdl 64] Double Attack} Qg7 26. Qxf6) 23... f6 $1 $11 {[%cal Rf6e5]}
24. Bxf6 Qxf6 25. Qxf6 Nxf6 26. Rxf6 Rxe3 {[%mdl 4096] Endgame KRR-KRR} 27.
Rg6+ Kh7 28. Rxg5 Rg8 29. Rxg8 (29. Re5 {seems wilder.} Rd3 30. Re7+ Rg7 31.
Rae1 Rxd4 32. Rxg7+ Kxg7 33. Re7+) 29... Kxg8 {KR-KR} 30. Kf2 Rd3 31. g4 Rxd4
32. Kg3 Rd3+ 33. Kh4 ({Better is} 33. Kf4 $11) 33... Rd2 $15 34. h3 (34. Kg3 $1
$15) 34... Rxb2 $19 35. Kg5 d4 36. Rd1 c5 ({Stronger than} 36... Rxa2 37. Rxd4
Rf2 38. Kg6 $11) 37. h4 Rxa2 38. h5 b5 (38... Ra6 $142 39. Kf4 Rd6) 39. h6 {
intending Re1.} b4 $1 {[%cal Rb4b3] White must now prevent ...b3.} 40. Re1 $2 {
[%mdl 8192]} (40. Rc1 $15) 40... b3 $1 41. Re8+ Kf7 42. h7 Rh2 (42... Kxe8 $2 {
too greedy.} 43. h8=Q+ Kd7 44. Qb8 $18) 43. h8=Q Rxh8 44. Rxh8 {KR-KP} c4 45.
Kf5 c3 {Strongly threatening ...c2.} 46. g5 {[#]} b2 $2 (46... c2 $1 $19 {
[%cal Rc2c1]} 47. g6+ Kg7) 47. g6+ $11 Ke7 48. Rb8 $1 {White threatens g7 and
mate.} c2 49. g7 b1=Q 50. g8=Q {[%csl Gf5][%cal Rg8e6]} c1=Q+ 51. Rxb1 Qxb1+ {
KQ-KQ} 52. Ke5 d3 53. Qe6+ Kd8 54. Qd6+ Kc8 {( -> ...Qb8)} 55. Qc6+ (55. Qe6+ {
feels hotter.} Kb8 56. Qd6+ Ka8 57. Qd5+ Qb7 58. Qxd3 Qb6 59. Qd5+) 55... Kb8
56. Kd4 (56. Qe8+ {with more complications.} Kc7 57. Kd4 Qc2 58. Qe7+ Kb6 59.
Qd6+) 56... d2 57. Qd6+ Kb7 58. Qe7+ Kb6 59. Qd8+ $2 {[%mdl 8192]} (59. Qc5+
$11 Kb7 60. Qe7+ Kc8 61. Qe8+ Kc7 62. Qe7+ Kc6 63. Qe8+ Kd6 64. Qf8+ Ke6 65.
Qh6+ Kf7 66. Qxd2) 59... Ka6 {Black mates.} 60. Qc8+ Ka5 61. Qc5+ {[#]} Qb5 $1
62. Qxa7+ Kb4 63. Qe7+ Ka4 64. Qa7+ Kb3 65. Qf7+ Kb2 {Weighted Error Value:
White=0.65/Black=0.24} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "7.3"]
[White "Dominguez Perez, Leinier"]
[Black "So, Wesley"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2758"]
[BlackElo "2770"]
[Annotator "TA"]
[PlyCount "91"]
[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 15,91,18,23,5,20,10,24,16,0,0,0,0,0,-8,-5,4,14,15,20,19,20,20,34,28,75,
78,97,101,148,118,118,87,115,113,126,126,185,178,185,192,199,198,249,254,308,
269,267,189,243,233,217,225,223,225,217,226,228,217,262,235,260,217,285,318,
353,345,340,338,337,329,313,234,239,191,444,433,369,357]} 1. e4 {CB} e5 2. Nf3
Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9.
Nc3 {[%cal Bb1c3,Bc3d5,Bd5e3,Be3f5][%mdl 32] C67: Ruy Lopez: Berlin Defence: 4
0-0 Nxe4.} (9. d4 Bf6 10. Re1 Re8 11. c3 Rxe1 12. Qxe1 Ne8 13. Bd3 d5 14. Bf4
g6 15. Nd2 Ng7 16. Nf3 Bf5 17. Bxf5 Nxf5 18. Qe2 c6 19. Re1 Ng7 20. Be5 Bxe5
21. Nxe5 Qd6 22. Qf3 f6 23. Nd3 Re8 24. Rxe8+ Nxe8 25. Qe3 Kf7 26. Qh6 Kg8 27.
Qe3 Kf7 28. Qh6 Kg8 29. Qe3 {1/2-1/2 (29) Dominguez Perez,L (2758)-So,W (2770)
Lichess.org INT 2020}) 9... Ne8 10. Nd5 Bd6 11. Re2 {White has an edge.} c6 12.
Ne3 Be7 13. Nf5 Bf6 14. Qe1 (14. d4 {is more complex.} d5 15. Ng3 Bg4 16. f3
Be6 17. Bf4) 14... d5 15. Ne7+ Kh8 16. Nxc8 Rxc8 17. g3 Qd7 18. d3 {[#]} Nd6
$146 ({Predecessor:} 18... Nc7 19. Qa5 Rfe8 20. Qe1 Rxe2 21. Qxe2 b5 22. c3 d4
23. c4 Re8 24. Qd1 bxc4 25. dxc4 {1/2-1/2 (45) Nakamura,H (2787)-Aronian,L 
(2805) Saint Louis 2014 CBM 162 [CB]}) 19. Bf4 Bxb2 20. Rb1 {[%cal Ba1b1,Bb1b7,
Bb7c7][%mdl 32]} Bf6 {[#]} 21. Bh3 $1 {[%cal Rh3d7]} Nf5 (21... Qxh3 22. Bxd6)
22. Bxf5 Qxf5 23. Bd6 Rfd8 24. Rxb7 Bd4 25. Be5 $36 {[%mdl 2048] White is
really pushing.} Bb6 {[#]} (25... Bc5 $16) 26. Bc7 $1 $18 {[%mdl 512]} Bxc7 {
[#]} 27. Rxc7 {[%mdl 512]} h5 (27... g6 28. Rxa7) 28. Rxa7 Rb8 (28... h4 {
keeps fighting.} 29. Ra4 d4) 29. h4 d4 30. Re5 Qf3 31. Kh2 Kg8 (31... Kh7 {
is a better defense.} 32. Qe4+ Qxe4 33. Rxe4 (33. Rxh5+ Kg8 $16) 33... Rb2) 32.
Re4 Rf8 33. Ra5 {Threatens to win with Rf4.} (33. Rxd4 $6 Rb1 $16) 33... Rb5
34. Rxb5 cxb5 35. Rxd4 {[%mdl 4096] Endgame KQR-KQR} Ra8 36. Rf4 Qd5 37. a3 {
[%cal Ba2a3,Ba3a4,Ba4a5][%mdl 32]} Qc5 38. Qb4 Qxc2 39. Qxb5 Qa2 40. a4 ({
Resist} 40. Qxh5 Rxa3 41. Qf5 Qe6 $18) 40... Rd8 41. Qc4 Qxc4 42. dxc4 Rc8 43.
Kg2 Kf8 44. Rf3 Ke7 $2 (44... Rxc4 45. Ra3 Rc6) 45. a5 Ra8 46. Ra3 {Weighted
Error Value: White=0.12/Black=0.23} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "7.4"]
[White "Duda, Jan-Krzysztof"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1/2-1/2"]
[ECO "D97"]
[WhiteElo "2743"]
[BlackElo "2784"]
[Annotator "TA"]
[PlyCount "130"]
[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 14,130,22,11,18,19,30,18,27,31,41,38,50,33,33,54,87,14,22,22,22,14,22,
27,25,32,20,0,22,0,88,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,31,31,19,14,14,15,
15,15,15,15,31,32,31,18,34,34,34,34,34,34,34,34,34,34,36,8,8,8,8,8,8,0,0,0,8,8,
8,8,8,8,57,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6
2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Nc6 8. Be2 e5 {
[%cal Re5d4] 8...Bg4 is vanishing. D97: Grünfeld: Russian System: 7 e4,
replies other than 7...Bg4.} 9. d5 ({Not} 9. Nxe5 Nxd4 10. O-O Nxe4 $1 $17 {
[%mdl 512]}) 9... Nd4 10. Nxd4 exd4 11. Qxd4 c6 12. Qc4 b5 13. Qxc6 Bd7 14. Qd6
Re8 15. e5 (15. f3 $16) 15... Ng4 16. e6 fxe6 17. h3 ({Worse is} 17. Nxb5 Be5
$1 $19) 17... Ne5 {[#]} 18. O-O $146 ({Predecessor:} 18. dxe6 Bxe6 19. Qxd8
Raxd8 20. Bxb5 Bc4 21. Bxe8 Nd3+ 22. Kf1 Bxc3 23. bxc3 Nxc1+ 24. Kg1 {1/2-1/2 
(36) Yu,Y (2763)-Vachier Lagrave,M (2774) Khanty-Mansiysk 2019}) 18... Nf7 19.
Qa3 exd5 {Hoping for ...d4.} 20. Bf3 d4 21. Ne4 Bc6 {[#]} (21... Rc8 $11 {
keeps the balance.}) 22. Ng5 Bxf3 $11 23. Nxf3 Qd5 24. Rd1 Nd6 25. Qd3 Rac8 26.
a4 b4 {[%cal Bb5b4,Bb4b3][%mdl 32]} 27. Be3 {[%cal Re3d4]} Nc4 28. Rab1 {
[%cal Re3d4]} Nxe3 29. fxe3 b3 30. exd4 Rc2 31. Rd2 Qc4 (31... Rec8 {looks
sharper.} 32. Qe3 a5 33. Rf1 Qc4 34. Rff2 Qd5) 32. Qxc4+ Rxc4 33. Rd3 Rxa4 34.
Rxb3 Bxd4+ 35. Nxd4 Rxd4 {[%mdl 4096] Endgame KRR-KRR} 36. Rb7 Rd2 37. Rc1 {
Rcc7 is the strong threat.} Rf8 $1 38. b3 (38. b4 {is interesting.} Ra2 39.
Rcc7 Rff2 40. Kh1 Rf1+ 41. Kh2) 38... Rf7 39. Rc8+ Kg7 40. Rxf7+ Kxf7 $14 {
KR-KR} 41. Rc7+ Kf6 42. Rxa7 Rb2 43. Rb7 h5 44. h4 Rc2 45. Rb4 Kf5 46. Kh2 Rc3
47. Rb5+ Kg4 48. Rb4+ (48. Rg5+ {with more complications.} Kxh4 49. Rxg6 Rh3+
50. gxh3) 48... Kf5 49. g3 Rc2+ 50. Kh3 Kf6 (50... Rc3 {feels hotter.} 51. Rb5+
Ke4 52. b4 Rb3 53. Rb6 Kf5) 51. Rf4+ Kg7 52. b4 (52. Rc4 $14 Rb2 53. Rb4) 52...
Rb2 $11 {The position is equal.} 53. Rc4 Kh6 54. g4 Rb3+ 55. Kg2 {Strongly
threatening g5+.} hxg4 56. Rxg4 Kh5 57. Rc4 (57. Rd4 {is interesting.} g5 58.
hxg5 Kxg5 59. Kf2 Kf6 60. Ke2) 57... g5 58. hxg5 Kxg5 59. Kf2 Kf5 60. Ke2 Ke5
61. Kd2 Kd5 62. Rc5+ Kd4 63. Rh5 Rxb4 64. Rh4+ Kc5 65. Rxb4 Kxb4 {Weighted
Error Value: White=0.07/Black=0.06} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "7.5"]
[White "Grischuk, Alexander"]
[Black "Carlsen, Magnus"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2777"]
[BlackElo "2862"]
[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 9,129,45,47,31,38,29,35,37,38,25,18,14,21,0,0,0,3,2,7,8,10,5,11,0,12,17,
59,61,65,70,70,63,67,66,64,63,82,57,75,69,69,47,47,38,38,38,47,36,37,0,36,0,31,
11,25,11,11,11,29,0,11,11,11,11,11,0,0,0,16,-21,-21,-21,-20,-16,-16,-14,-19,
-32,-38,-30,-45,-94,-114,-108,-118,-113,-2,-5,0,0,0,0,0,0,-3,-6,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 g6
5. d3 h6 $1 6. O-O {B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} Bg7 7.
a3 d6 8. b4 {White is slightly better.} Nge7 {[#]} 9. bxc5 $146 ({Predecessor:
} 9. Rb1 O-O 10. Nd5 b6 11. c3 Be6 12. Be3 Kh7 13. d4 cxd4 14. cxd4 Bxd5 15.
exd5 Nxd4 16. Nxd4 exd4 17. Bxd4 Bxd4 18. Qxd4 {1/2-1/2 (36) Cornette,D (2462)
-Cmilyte,V (2542) Germany 2019}) 9... dxc5 10. Be3 b6 11. Nd5 (11. a4 {feels
hotter.} O-O 12. Rb1 Nd4 13. Nd2 Bb7 14. Rb2) 11... Be6 {[%cal Re7d5]} 12. Nxe7
Qxe7 13. Bd5 Rc8 14. c4 O-O 15. Bd2 Rfe8 16. Re1 Qd7 17. h3 Bxd5 18. exd5 Nd4
19. Nxd4 cxd4 20. Qb3 f5 21. f3 Qc7 22. Rac1 Kh7 23. Re2 a5 24. Rb1 Rb8 25. a4
Bf8 26. Rbe1 Bc5 {[#]} 27. Bf4 $1 {[%cal Rf4e5]} Bd6 28. Bc1 Bb4 29. Bd2 Bc5
30. Bf4 {[%cal Rf4e5]} Bd6 {[#]} 31. Kh1 $1 g5 32. Bc1 Bb4 33. Bd2 Bc5 34. Bc1
Re7 35. Ba3 Qd6 36. Ra1 Kg7 37. Rb2 Rbe8 38. Bxc5 bxc5 39. Qb6 Qxb6 40. Rxb6
$11 {[%mdl 4096] Endgame KRR-KRR} e4 41. d6 Rd7 42. fxe4 fxe4 43. dxe4 Rxe4 44.
Rc6 Kf6 45. Rxc5 Rxd6 {White must now prevent ...d3.} 46. Rd1 d3 47. Kg1 {[#]}
d2 ({Better is} 47... Re5 $1 $17 {[%cal Re5c5]} 48. Rb5 Rd4 49. Rb6+ Kf7 50.
Rb7+ Ke6 51. Rb6+ Ke7 52. Rb7+ Kf6 53. Rb6+ Kf7 54. Rb7+ Ke6 55. Rb6+ Kf7) 48.
Kf2 {The position is equal.} Kg6 49. Rd5 Rf6+ 50. Kg3 Rxc4 51. R1xd2 Rxa4 52.
Rd8 Re4 53. Rg8+ Kh5 54. Ra8 Rf5 55. Kh2 {g4+ is the strong threat.} g4 56. Ra2
Ree5 (56... gxh3 {is more complex.} 57. R8xa5 Rxa5 58. Rxa5+ Kg4 59. Ra6 h5)
57. Ra4 Rg5 {( -> ...g3+)} 58. hxg4+ Rxg4 59. R4xa5 Rxa5 60. Rxa5+ {KR-KR} Rg5
61. Ra3 Kg6 62. Ra6+ Kh5 63. Ra3 Kg6 64. Ra6+ Kh5 65. Ra3 {Weighted Error
Value: White=0.07/Black=0.06} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "7.6"]
[White "Giri, Anish"]
[Black "Ding, Liren"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2764"]
[BlackElo "2791"]
[Annotator "TA"]
[PlyCount "125"]
[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 10,125,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-14,0,0,0,-35,0,0,0,0,0,-18,0,
-6,0,0,0,0,0,0,0,0,0,7,14,0,0,0,0,0,9,0,31,14,17,10,45,52,45,53,47,16,41,36,64,
65,70,75,95,52,241,215,252,246,373,368,439,407,418,387,431,428,427,422,412,401,
486,478,763,492,513,456,426,369,475,446,397,404,350,15,20,27,22,29,39,41,137,
131,122,0,100,0,0,0,12843,12843,12844,12844,12845,12845]} 1. e4 e5 2. Nf3 Nc6
3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Bc5 6. O-O O-O {C77: Ruy Lopez: 3...a6 4 Ba4 Nf6,
unusual lines.} 7. Bxc6 dxc6 8. d3 Re8 {The position is equal.} 9. Be3 Bd6 10.
h3 Nd7 11. Nd2 Nf8 {[#]} 12. Ne2 $146 {[%cal Bc3e2,Be2g3,Bg3f5][%mdl 32]} ({
Predecessor:} 12. Nc4 Ng6 13. a4 Be6 14. Nxd6 cxd6 15. a5 d5 16. Na4 Qh4 17.
Qf3 Qe7 18. Bb6 {1-0 (49) Staniszewski,J (2498)-Corbat,P (2412) ICCF email 2010
}) 12... Ng6 13. Ng3 Be6 14. Nf5 Bf8 15. Qf3 Qd7 16. h4 (16. Rfd1 {is more
complex.} f6 17. Qg4 Kh8 18. Qf3 Kg8) 16... Ne7 (16... Bxf5 $5 17. Qxf5 Qxf5
18. exf5 Nxh4 $15) 17. Nxe7+ Bxe7 18. Qg3 f6 19. b3 Kh8 20. Kh1 Rad8 21. f4
exf4 22. Bxf4 Bd6 23. Rae1 h6 24. Nf3 Bxf4 25. Qxf4 c5 26. Rg1 b5 27. g4 Rf8
28. Qg3 Qd6 29. Kh2 c4 30. bxc4 bxc4 31. d4 Rb8 (31... Qa3 {keeps more tension.
} 32. d5 Bd7 33. Rg2 c6 34. e5 Be8) 32. d5 {Threatens to win with Qxd6.} Bd7
33. Qxd6 cxd6 34. Nd4 Rb2 35. a3 Ra2 36. Re3 $1 Re8 37. Kg3 Ba4 38. Rg2 c3 $2 (
38... Bd7 $14) 39. Nf5 $18 Rxa3 40. Nxd6 Rb8 (40... Rf8 $142 41. g5 h5) 41. g5
Bd7 42. Kf4 fxg5+ 43. hxg5 Rf8+ 44. Ke5 h5 45. g6 Kg8 46. Kd4 h4 47. Rh2 h3 (
47... Rf6 $142 48. Nc4 Ra4 49. Rxh4 Bb5) 48. e5 Rf4+ 49. Re4 Ra4+ 50. Ke3
Rfxe4+ 51. Nxe4 {[%mdl 4096] Endgame KRB-KRN} Bf5 52. Nd6 Bxg6 {Black wants to
play ...Rh4.} 53. e6 $2 (53. Rxh3 $18 {e6 is the strong threat.} Bxc2 54. e6)
53... Rh4 $1 $11 {With the idea ...Kf8.} 54. e7 a5 $1 55. e8=Q+ Bxe8 56. Nxe8 {
KRN-KR} Kf7 (56... Kf8 $1 $14 57. Nc7 Ke7) 57. Nd6+ $16 Kf6 {[#]} 58. Nb5 (58.
Kf2 $1 $16) 58... a4 (58... Ke5 $11 {keeps the balance.}) 59. d6 (59. Kf2 $16)
59... Ke6 $11 60. Kd3 {Black must now prevent Re2+.} g5 $2 {[%mdl 8192]} (60...
Kd7 $11) 61. Re2+ $18 {White is clearly winning.} Kd7 62. Re7+ Kc6 {[#]} 63. d7
$1 {Weighted Error Value: White=0.29/Black=0.25} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "7.7"]
[White "Nepomniachtchi, Ian"]
[Black "Radjabov, Teimour"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "2789"]
[BlackElo "2765"]
[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 11,95,0,16,8,21,12,14,19,17,20,12,8,5,10,8,9,21,0,0,0,18,8,15,14,26,24,
10,16,25,21,26,0,0,0,0,-8,0,0,-6,-14,-14,-14,-14,-14,-27,-14,-12,-56,-47,-51,
-61,-80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-78,-67,-56,-20,-17,-8,-8,-8,-8,0,
-80,0,-8,0,-80,0,-8]} 1. e4 {Blatny,P} c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5.
Nb3 Nf6 6. Bg5 Bb4+ 7. c3 {B32: Sicilian: Löwenthal and Kalashnikov Variations.
} Be7 8. Bxf6 Bxf6 9. Na3 d6 {[#]} 10. Bc4 $146 ({Predecessor:} 10. Nc4 Be7 11.
Ne3 O-O 12. Bc4 Bg5 13. Qd3 Bxe3 14. Qxe3 Be6 15. Qe2 Na5 16. Nxa5 Qxa5 {
1/2-1/2 (23) Huebner,R (2620)-Anand,V (2635) Munich 1991 CBM 023 [Blatny,P]})
10... O-O 11. Qd3 a6 12. Rd1 Be7 13. O-O Bg4 14. f3 Bd7 15. Kh1 Qc7 16. Nc2 {
[%cal Ba3c2,Bc2e3,Be3d5][%mdl 32]} Rad8 (16... b5 $5 17. Bd5 $8 Rac8 $11) 17.
Ne3 Bg5 18. Nd5 Qb8 {[#] White must now prevent ...b5.} 19. Nb6 Be8 {Hoping
for ...Qa7.} 20. a4 Kh8 21. Na1 Qa7 22. Nd5 Na5 23. Nb3 Nxc4 24. Qxc4 b5 $36 {
[%mdl 2048] Black is more active.} 25. Qc7 Qxc7 26. Nxc7 bxa4 27. Nxe8 Rfxe8
28. Na5 Rb8 29. Nc4 Rec8 $1 {[%cal Rc8c4]} 30. Nxd6 {[%mdl 64] Double Attack}
Rc7 31. Ra1 {[#]} Rxb2 (31... Rb6 $1 $17 {[%cal Rb6d6]} 32. Rfd1 Kg8) 32. Rxa4
$11 Rb6 33. Nc4 {[%cal Rc4b6]} Re6 34. g3 g6 35. Rd1 Kg7 36. Kg2 Bf6 37. Rd5 h5
38. h4 Rec6 39. Nd6 {And now Ne8+ would win.} Kf8 {Strongly threatening ...Be7.
} 40. Rb4 (40. c4 $11 {keeps the balance.}) 40... Ke7 $17 ({But not} 40... Rxc3
41. Rb8+ Ke7 42. Re8+ Kd7 43. Ra8 $11) 41. Rb7 $1 Rxb7 42. Nxb7 Rxc3 $15 {
[%mdl 4096] Endgame KRB-KRN} 43. Nc5 $1 Rc2+ 44. Kf1 Rc3 45. Ke2 (45. Kg2 $1
$11 {remains equal.}) 45... Rc2+ ({Black should play} 45... a5 $17) 46. Kf1 $1
$11 Rc3 ({Black should try} 46... a5 $11) 47. Ke2 $17 Rc2+ (47... a5 $17) 48.
Kf1 $1 {Weighted Error Value: White=0.11/Black=0.12} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "7.8"]
[White "Nakamura, Hikaru"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1/2-1/2"]
[ECO "A01"]
[WhiteElo "2736"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "311"]
[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 9,310,0,0,2,6,-4,6,1,13,4,0,6,34,27,52,28,66,21,45,22,22,19,15,27,27,0,
0,-6,-9,-6,-10,-10,-8,0,0,0,0,0,0,-6,10,0,0,0,10,16,11,-11,0,0,0,0,0,0,0,-95,
-110,-173,-183,-162,-163,-198,-185,-231,-229,-227,-147,-142,90,88,90,97,137,
137,276,276,260,246,300,122,122,122,122,122,122,125,145,145,154,61,191,191,191,
191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,
191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,
147,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,191,
191,191,191,191,191,147,191,191,191,147,191,147,191,0,191,0,198,159,159,159,
159,159,159,159,159,159,159,159,159,159,159,159,159,159,159,159,159,159,159,0,
159,159,159,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,4574,4574,4574,4574,
4574,4574,4574,4574,4574,4574,4574,4574,4574,4574,4574,0,4574,4574,4574,4574,
4574,4574,4574,4574,4574,4574,4574,4574,4574,4574,4574,4574,4574,4574,4574,
4574,4574,4574,4574,4574,4574,4574,4574,4574,4567,4567,4574,4567,4567,4574,
4567,4574,4567,4574,4574,4574,4574,28,4574,4567,4574,4574,4574,32,4574,28,4574,
12,28,28,28,36,4574,4574,4574,36,4566,4566,4574,40,4574,40,4574,4574,4574,612,
4574,612,4574,4574,4574,4574,4574,40,612]} 1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5
e4 5. Ne2 a6 6. Bxc6 {A01: Nimzowitsch-Larsen Opening.} dxc6 7. Ng3 h5 8. Nc3 {
The position is equal.} Bg4 9. f3 exf3 10. gxf3 {[#]} Be6 $146 ({Predecessor:} 
10... h4 11. Nf1 Bh5 12. Qe2 Qd7 13. d3 O-O-O 14. O-O-O Nd5 15. e4 Nxc3 16.
Bxc3 Qh3 {1/2-1/2 (63) Granda Zuniga,J (2652)-Naroditsky,D (2622) Benasque 2015
}) 11. Qe2 Qd7 12. O-O-O O-O-O 13. Rhg1 h4 14. Nge4 (14. Nh1 {with more
complications.} Kb8 15. Nf2 Nh5 16. Kb1 c5 17. f4) 14... Nxe4 15. Nxe4 f6 16.
Kb1 Kb8 17. d4 Qf7 18. Qf2 Be7 19. Nc5 Bc8 20. e4 g5 21. Nd3 Qh7 22. Qe2 Rhe8
23. a4 Qf7 24. Rdf1 Bd6 25. Qf2 Qh7 26. Re1 Qf7 27. f4 gxf4 28. Nxf4 h3 29. d5
cxd5 30. Nxd5 f5 31. Rgf1 Rg8 32. Ne3 (32. Qh4 $11 {remains equal.}) 32... f4
$17 33. Nc4 (33. Qf3 $17 {is a better defense.}) 33... Bb4 $19 34. Rc1 Rg2 35.
Qf3 Rxh2 36. Be5 Rg2 37. Bxf4 Qh7 38. Ne3 Rgg8 (38... Rg6 $17 {stays on course.
} 39. Nd5 Bd6 40. Bxd6 Rgxd6) 39. Nd5 $16 Rxd5 40. exd5 Ba3 {...Qh8 is the
strong threat.} 41. Rce1 $1 Bb4 (41... Qg6 $16 42. Qf2 Qf7) 42. Qe4 $18 Qxe4
43. Rxe4 Bc5 44. d6 (44. b4 $18 {has better winning chances.} Bd6 45. Bxd6 cxd6
46. Rh4) 44... Bxd6 $16 45. Bxd6 cxd6 {[%mdl 4096] Endgame KRR-KRB} 46. Rh4 Kc7
47. Rf6 Rg7 48. Rhh6 Bd7 49. Rxd6 (49. Kb2 $16) 49... h2 (49... Rg1+ $14 50.
Kb2 h2) 50. Rd1 $1 $18 Rg1 51. Rc1 ({But not} 51. Kc1 $2 Bg4 $19) 51... Rg2 52.
Kb2 {aiming for Rh1.} Bf5 {Black hopes to continue with ...Be4.} 53. Rh1 Rxc2+
54. Ka3 Be4 55. R1xh2 Rxh2 56. Rxh2 {KR-KB} a5 57. Kb2 b6 58. Rh4 Bd5 59. Rh7+
Kc6 60. Kc3 Kc5 61. Rh3 Be6 62. Rh6 Bd5 63. Rh8 Be6 64. Re8 $1 {[%cal Re8e6]}
Bd5 65. Re7 Kd6 66. Rg7 Kc5 67. Rg4 Be6 68. Rf4 Bd5 69. Rf6 Be4 70. Rf8 Bd5 71.
Rc8+ Kd6 72. Kb2 Kd7 73. Rc3 Kd6 74. Rc1 Be6 75. Rc2 Bd5 76. Ka3 Bc6 77. Rh2
Kc5 78. Rh5+ Bd5 79. Rg5 Kd6 80. Rg1 Kc5 81. Rd1 Bc6 82. Rd8 Bd5 83. Kb2 Bc6
84. Kc2 Bd5 85. Kc3 Kc6 86. Re8 Kc5 $1 87. Rc8+ Kd6 88. b4 axb4+ 89. Kxb4 Bc6
90. Rg8 Bd7 91. Rh8 Kc7 92. Rh7 Kd6 93. Rg7 Bc6 94. Ra7 Bd7 95. Rb7 Kc6 96. Rb8
Kc7 97. Rh8 Kd6 98. Ra8 Bc6 99. Ra7 Bd7 100. Kc4 Bc6 101. Ra6 ({Better is} 101.
Kb3 $16) 101... Kc7 $1 $11 102. a5 bxa5 103. Kc5 Bg2 104. Ra7+ Kd8 105. Kd6 Ke8
106. Rg7 Bf1 107. Re7+ Kf8 $1 108. Ke6 {White wants to mate with Rf7+.} Kg8 $2
{[%mdl 8192]} (108... Ba6 $11) 109. Kf6 $18 Bd3 110. Rg7+ Kh8 111. Kf7 a4 112.
Rg4 a3 113. Rh4+ Bh7 114. Ra4 {Intending Ra8+ and mate.} Bg8+ 115. Kf8 a2 {[#]}
116. Rh4+ $1 Bh7 117. Rh1 a1=Q 118. Rxa1 Bg8 119. Rg1 Bh7 120. Kf7 Be4 121.
Rg8+ Kh7 122. Rg4 {[%cal Rg4h4]} Bd5+ 123. Kf6 Kh8 124. Rh4+ Kg8 125. Rd4 Ba2
126. Rd2 Bb1 127. Rb2 Bd3 128. Rb3 Bc2 129. Rb8+ Kh7 130. Rb2 Bd3 131. Rg2 Kh8
132. Kf7 Bh7 133. Rg7 Bd3 134. Kf8 Bh7 135. Rc7 Bg8 136. Rc8 Kh7 137. Rc3 $2 ({
White has to play} 137. Ke7 $18 Kg7 138. Rc2) 137... Kh8 $2 {[%mdl 8192]} (
137... Bd5 $11) 138. Rc2 Bh7 139. Rg2 Be4 140. Rg8+ Kh7 {[#]} 141. Rg4 $2 (141.
Rg5 $1 $18 Kh6 142. Re5) 141... Bf5 $2 {[%mdl 8192]} (141... Bc2 $11) 142. Rf4
$2 (142. Rg5 $18 {White threatens Kf7 and mate.} Bb1 143. Kf7) 142... Bc2 143.
Rf2 (143. Kf7 {looks sharper.} Kh6 144. Rg4 Kh5 145. Rg1 Kh4 146. Ke6) 143...
Bd3 144. Rd2 Be4 $2 {[%mdl 8192]} (144... Bc4 $14) 145. Kf7 {[%cal Rd2h2]} Kh8
146. Rd8+ Kh7 147. Rd4 Bg6+ 148. Kf6 $2 (148. Ke7 $18 Kg7 149. Rg4) 148... Bc2
$1 $14 149. Rc4 $2 ({White should play} 149. Rd5 $18 Bb3 150. Rg5) 149... Bb1
$2 {[%mdl 8192]} (149... Bd1 $14) 150. Rc1 Bd3 151. Rd1 (151. Rc7+ $142 Kg8
152. Rg7+ Kh8 153. Rd7) 151... Bc2 152. Rg1 (152. Rd5 $142 Be4 153. Rh5+ Kg8
154. Rg5+ Kh7 155. Rg7+ Kh8 156. Ra7) 152... Kh8 $18 153. Ra1 Bh7 154. Re1 Bg8
155. Rh1+ (155. Re4 $142 Bh7 156. Re8+ Bg8 157. Rd8) 155... Bh7 156. Kf7 {
White used his chance.  Weighted Error Value: White=0.14/Black=0.20} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "8.1"]
[White "Dubov, Daniil"]
[Black "Vidit, Santosh Gujrathi"]
[Result "0-1"]
[ECO "C28"]
[WhiteElo "2710"]
[BlackElo "2726"]
[Annotator "TA"]
[PlyCount "66"]
[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 11,66,5,13,5,7,0,0,6,0,-8,-3,0,0,-10,-13,-21,-15,-47,-34,-66,-57,-79,
-62,-74,-39,-205,-212,-206,-209,-208,-201,-202,-201,-198,-208,-200,-189,-487,
-481,-471,-450,-445,-435,-1474,-595,-775,-748,-856,-853,-847,-839,-915,-765,
-781,-756,-921,-879]} 1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. d3 Na5 5. Bb3 Nxb3 6.
axb3 d5 7. Nf3 {C28: Vienna Game: 2...Nf6 3 Bc4 Nc6.} dxe4 8. Nxe5 exd3 9. O-O
{The position is equal.} Be7 10. Nxd3 {[#]} Bg4 $5 $146 {[%mdl 8] An
interesting novelty.} ({Predecessor:} 10... O-O 11. Qf3 c6 12. h3 Re8 13. Rd1
Be6 14. Be3 Qc7 15. Bf4 Qc8 16. Be5 Nd7 {1-0 (37) Firouzja,A (2702)-Carlsen,M 
(2876) chess24.com INT 2020}) 11. Qe1 O-O 12. Be3 Re8 13. f3 Bf5 14. Qf2 Nd5
15. Nxd5 Qxd5 16. Rad1 Rad8 17. Rfe1 Bb4 18. Re2 {This move loses the game for
White.} (18. Nxb4 $15 Qxd1 19. Nd3 Rxd3 20. cxd3 Qxb3 21. Bxa7) 18... Qb5 $19 {
[%cal Rf5d3]} ({Stronger than} 18... Bxd3 19. Rxd3 Qb5 20. Rxd8 $11) 19. Bf4
Bxd3 20. cxd3 {[#]} Bc5 $1 {...Rxe2 is the strong threat.} 21. Rxe8+ Rxe8 22.
d4 Qxb3 $40 {[%mdl 128] Black attacks with force.} 23. Rc1 {[#]} Bb6 24. Bxc7
$2 (24. Qd2) 24... Rc8 {Black is clearly winning.} 25. Qe1 {Black must now
prevent Bxb6.} Qxb2 26. Kh1 {[#]} Ba5 $1 {[%mdl 512]} 27. Qe3 (27. Bf4 $142
Rxc1 28. Bxc1 Qxg2+ 29. Kxg2 Bxe1 30. Ba3) 27... Bxc7 (27... Bd2 $142 28. Qg1
Qxc1 29. Qxc1 Bxc1) 28. h3 {intending Rxc7.} Qb4 29. d5 Qd6 {[%csl Gc7][%cal
Rd6h2]} 30. f4 Rf8 31. Rc4 Bb6 32. Qe4 h6 33. g4 Rd8 {Weighted Error Value:
White=0.71/Black=0.30} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "8.2"]
[White "Radjabov, Teimour"]
[Black "Nakamura, Hikaru"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2765"]
[BlackElo "2736"]
[Annotator "TA"]
[PlyCount "34"]
[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 11,34,15,23,14,13,16,29,18,14,27,17,23,33,28,27,17,21,26,21,0,16,0,22,0,
13]} 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. Be2 Bf6 12. Be5 Bf5 13. Bxf6 $1 {[%mdl 4]
outshines the older 13.0-0.} Qxf6 14. Qd4 Qd6 {[#] Black wants to play ...Nb3.}
15. Qd1 $146 {The position is equal.} (15. Rd1 Rfd8 16. Qd2 Qf6 17. Qd4 Qd6 18.
Qd2 Qf6 19. Qd4 Qd6 {1/2-1/2 (19) Radjabov,T (2765)-Nakamura,H (2736) chess24.
com INT 2020}) ({Predecessor:} 15. Rd1 Rfd8 16. Qd2 Qf6 17. Qd4 Qd6 18. Qd2 Qf6
19. Qd4 Qd6 {1/2-1/2 (19) So,W (2770)-Radjabov,T (2765) chess24.com INT 2020})
15... Qf6 16. Qd4 Qd6 {next ...Nb3 is good for Black.} 17. Qd1 Qf6 {A rather
calm draw.  Weighted Error Value: White=0.07/Black=0.00} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "8.3"]
[White "Ding, Liren"]
[Black "Nepomniachtchi, Ian"]
[Result "1/2-1/2"]
[ECO "D73"]
[WhiteElo "2791"]
[BlackElo "2789"]
[Annotator "TA"]
[PlyCount "21"]
[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 11,21,12,14,16,20,12,17,0,22,0,24,0]} 1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2
d5 5. cxd5 cxd5 6. Nf3 Bg7 7. Ne5 {[#] D73: Fianchetto Grünfeld: 5 Nf3 .} Ne4
$146 ({Predecessor:} 7... O-O 8. Nc3 Bf5 9. Be3 Qb6 10. Qd2 Rd8 11. O-O Ne4 12.
Nxe4 Bxe4 13. Bh3 Nc6 14. Nxc6 Qxc6 15. Rfc1 Qb6 16. Rc5 e5 17. Rac1 Bf8 {
1-0 (35) Ivanchuk,V (2678)-Shankland,S (2691) chess24.com INT 2020}) 8. Nd2 Nf6
9. Nb1 Ne4 10. Nd2 Nf6 11. Nb1 {A rather calm draw.  Weighted Error Value:
White=0.08/Black=0.01} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "8.4"]
[White "Carlsen, Magnus"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "2862"]
[BlackElo "2764"]
[Annotator "TA"]
[PlyCount "40"]
[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 14,40,10,8,14,-26,-7,-10,-40,-51,0,-6,0,-19,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0]} 1. e3 d5 2. c4 e6 3. Nf3 Nf6 4. b3 c5 5. Bb2 Nc6 6. cxd5 exd5 7. Bb5 Bd6 8.
O-O O-O {A13: English Opening: 1...e6.} 9. Bxc6 bxc6 10. Nc3 Bg4 11. Ne2 {[#]}
Ne4 $146 (11... Re8 $15) ({Predecessor:} 11... Rb8 12. Qc2 Ne4 13. Ng3 Re8 14.
d3 Nxg3 15. hxg3 Qd7 16. Qc3 f6 17. Nh2 h5 {0-1 (27) Gaerths,R (2251)-Kunin,V 
(2516) Bad Wiessee 2012}) 12. d3 {The position is equal.} Bxf3 13. gxf3 Qg5+
14. Ng3 $1 Nxg3 15. hxg3 Bxg3 16. fxg3 Qxg3+ 17. Kh1 {[#] Hoping for Qe2.} Qh3+
18. Kg1 Qg3+ 19. Kh1 {Threatens to win with Qe2.} Qh3+ 20. Kg1 {And now Rf2
would win.} Qg3+ {Weighted Error Value: White=0.10/Black=0.08} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "8.5"]
[White "Vachier-Lagrave, Maxime"]
[Black "Grischuk, Alexander"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2784"]
[BlackElo "2777"]
[Annotator "TA"]
[PlyCount "87"]
[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 15,87,23,18,18,18,8,4,7,7,2,3,8,8,0,10,0,7,0,8,-11,0,0,10,0,11,8,23,14,
14,11,9,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5
Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. Nc3 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.
} Ne8 10. d4 Bf6 11. Re1 d5 $1 12. Bf4 c6 13. Ne2 {[#]} g6 $146 ({Predecessor:
} 13... Nc7 14. c3 Ne6 15. Bg3 h5 16. h3 Bg5 17. Nc1 h4 18. Bh2 Bf4 19. Nd3
Bxh2+ 20. Kxh2 {1-0 (48) Karjakin,S (2752)-Vidit,S (2726) Chess.com INT 2020})
14. c3 Ng7 15. Qd2 Re8 16. Ng3 Bd7 17. Bd3 Rxe1+ 18. Rxe1 Qf8 19. Be5 Bxe5 20.
Rxe5 f6 21. Re2 Re8 {The position is equal.} 22. h4 Rxe2 23. Nxe2 (23. Qxe2 {
keeps more tension.} Ne6 24. Nf1 Nf4 25. Qe3 Nxd3 26. Qxd3 Qd6 27. Qf3) 23...
Bf5 24. Nf4 Bxd3 25. Nxd3 Nf5 26. h5 Kf7 27. Qf4 Qd6 28. Qf3 Qe7 29. Kf1 Nd6
30. hxg6+ hxg6 31. Qh3 Kg7 32. Nf4 a5 (32... Qe8 {is interesting.} 33. Ne6+ Kg8
34. Qg4 Nc4 35. Nc5 b6) 33. Qe6 Qxe6 34. Nxe6+ $11 {[%mdl 4096] Endgame KN-KN}
Kf7 35. Nc5 Ke7 36. Ke2 g5 37. f3 Kd8 38. g4 b6 39. Nd3 Kd7 40. b3 Nb5 41. Kd2
Nd6 42. Ke2 $1 Nb5 43. Kd2 Nd6 44. Ke2 {A rather calm draw.  Weighted Error
Value: White=0.02/Black=0.02} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "8.6"]
[White "So, Wesley"]
[Black "Duda, Jan-Krzysztof"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2770"]
[BlackElo "2743"]
[Annotator "TA"]
[PlyCount "179"]
[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 12,179,33,16,26,24,33,4,14,12,12,13,0,13,16,8,16,7,3,4,7,0,0,0,0,-15,43,
0,0,0,0,-20,-2,-2,-16,-25,-30,-77,-58,-48,-4,-6,0,-4,-3,-4,-4,-14,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-59,15,23,99,
99,298,70,286,70,70,70,70,55,70,55,70,70,82,70,70,62,62,62,68,70,74,70,70,72,
72,62,70,0,62,62,63,65,72,29,29,29,62,39,62,62,65,64,64,37,62,62,12837,12837,
12845,12845,12845,12845,12845,0,12845,0,12845,12845,12849,12849,12850,27996,
27997,27997,27998,27998,27994,27994,27995,27995,27996,27996,27997,27997,27995,
27995,27996,27996]} 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6.
bxc3 c5 7. Rb1 $1 {[%mdl 4] outshines the older 7.Nf3.} cxd4 {D35: Queen's
Gambit Declined: Exchange Variation.} 8. cxd4 Nc6 9. Nf3 Bb4+ {The position is
equal.} 10. Bd2 Bxd2+ 11. Qxd2 O-O 12. Bb5 Ne7 13. O-O b6 {[#]} 14. h4 $5 $146
{[%mdl 8] An interesting novelty.} ({Predecessor:} 14. Ne5 Bb7 15. Qe3 Ng6 16.
Nd7 Re8 17. Nc5 bxc5 18. Bxe8 Rb8 19. Ba4 cxd4 20. Qb3 {1-0 (87) Lupulescu,C 
(2652)-Druska,J (2508) chess.com INT 2020}) 14... Bb7 15. Rfe1 Rc8 16. h5 h6
17. Ne5 {aiming for Nd7.} Qd6 18. Rb3 f5 (18... f6 $11 19. Nc4 Qc7) 19. f3 (19.
Rg3 $5 {[%cal Rd2h6]} Kh8 20. Nc4 $11) 19... a6 20. Bf1 b5 21. Qe3 Rfd8 {
White should prevent ...fxe4.} 22. Rd1 Nc6 23. Nxc6 Bxc6 24. a4 {[%cal Ra4b5]}
fxe4 25. fxe4 {[%cal Ra4b5]} Be8 26. axb5 Bxh5 27. Rd2 axb5 28. Rxb5 Bg6 29.
Rd1 Rb8 (29... Qc7 {is more complex.} 30. Be2 Qc2 31. Rb6 Rc3 32. Qd2 Bxe4 33.
Rxe6 Bd5) 30. e5 Qe7 31. Rxb8 Rxb8 32. Bc4 Rd8 33. Qh3 Bf7 34. Qg4 Qd7 35. Qe4
Qa4 36. Be2 Kh8 37. Kh2 (37. Qh4 {keeps more tension.} Qd7 38. Qg4 Bg8 39. Bf3
Qa7 40. Rd2) 37... Bg8 38. Qg4 Qa7 39. Rd2 Qb6 40. Rd3 Qa7 41. Rd1 Qb6 42. Bf3
Qa7 43. Qf4 Qa4 44. Kg3 Qb4 45. Kh3 Rf8 46. Qe3 Rd8 47. g4 Rc8 48. Kg3 Bh7 49.
g5 (49. Ra1 $11) 49... Rc3 (49... h5 $1 $15) 50. Qf4 $11 Qb7 (50... Qe7 $11 51.
gxh6 g5 52. Qf6+ Qxf6 53. exf6 Kg8) 51. Rc1 $16 Rd3 $2 (51... Qb4 $16) 52. Qf8+
$18 Bg8 {[#]} 53. gxh6 $2 (53. g6 $1 $18 {Threatens to win with Rc2.} Rb3 54.
Rc2) 53... Qf7 $1 $14 54. hxg7+ Qxg7+ 55. Qxg7+ Kxg7 {[%mdl 4096] Endgame
KRB-KRB} 56. Rc4 Bf7 {...Bh5 is the strong threat.} 57. Kf4 Rd2 58. Bg4 Kf8 59.
Rc8+ Ke7 $1 60. Rc7+ Kf8 61. Ke3 Rg2 62. Bf3 Rb2 63. Be2 Bg6 64. Bg4 Bf7 65.
Kf4 ({White should try} 65. Rc3 $14) 65... Rb4 (65... Rd2 $1 $11) 66. Rd7 Ke8
67. Rd6 Ke7 68. Bf3 Be8 69. Kg5 Ra4 70. Bg4 Bf7 71. Be2 {Black must now
prevent Rd7+.} Rb4 72. Bf3 Be8 73. Kh6 Bf7 74. Bc6 {And now Kg7 would win.} Rb2
$2 {[%mdl 8192] [#] White stays focused until the end.} (74... Rb1 $14) 75. Kg7
$1 $18 Rc2 76. Rd7+ Ke8 77. Rc7+ Kd8 78. Rd7+ Ke8 79. Rc7+ Kd8 80. Rxf7 Rxc6 {
KR-KR} 81. Kf6 Rc4 82. Kxe6 Rxd4 {White mates.} 83. Rf8+ Kc7 84. Ke7 Rh4 85. e6
Rh7+ 86. Kf6 Rh6+ 87. Kf7 Rh7+ 88. Kg6 Rh1 89. e7 Rg1+ 90. Kh5 {Weighted Error
Value: White=0.14/Black=0.12} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "8.7"]
[White "Aronian, Levon"]
[Black "Dominguez Perez, Leinier"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2781"]
[BlackElo "2758"]
[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 13,111,8,16,12,18,19,39,0,0,0,18,0,0,0,0,0,0,-7,0,-25,-29,-31,4,-3,-14,
-55,-52,-40,-40,-48,-34,-38,-11,-45,-55,-56,-31,-54,-7,0,-7,-29,0,0,0,0,4,0,16,
0,31,30,42,30,35,35,35,36,55,55,84,84,108,50,102,108,152,152,151,183,185,204,
195,203,185,194,195,194,203,177,422,420,408,315,368,339,355,322,662,653,8204,
9675,5285,4698,12818,12802,29968,29967,29959,12374]} 1. e4 c5 2. Nf3 e6 3. c3
Nf6 4. e5 Nd5 5. d4 cxd4 6. Bc4 d6 7. cxd4 Be7 8. O-O {B22: Sicilian: 2 c3.}
O-O 9. Qe2 Bd7 10. Bxd5 $5 {[%mdl 4] White is slightly better. A promising
side line.} exd5 11. Nc3 {[%cal Bb1c3,Bc3b5,Bb5d4][%mdl 32]} Be6 12. Bf4 Nc6
13. Rfd1 Re8 14. h3 {[#]} h6 $146 ({Predecessor:} 14... Bf8 15. Qd2 Rc8 16.
exd6 Bxd6 17. Bxd6 Qxd6 18. Re1 f6 19. Rac1 Re7 20. Re3 Rce8 {1/2-1/2 (36)
Dory,J (2287)-To,N (2291) Hungary 2016}) 15. Nb5 {[%cal Re5d6]} Bf5 16. Qf1 {
[%cal Re5d6]} dxe5 17. dxe5 a6 18. Nbd4 Be4 19. e6 Bf6 20. exf7+ Kxf7 21. Rac1
Rc8 22. Be3 Qd7 23. Rd2 Kg8 24. Rcd1 Kh7 25. Ne1 Nxd4 26. Bxd4 Bg5 27. Re2 Qb5
{And now ...Bxg2! would win.} 28. f3 $1 {[%cal Rf3e4]} Bg6 29. Rxe8 Qxf1+ (
29... Bxe8 {with more complications.} 30. b3 Bg6 31. Qxb5 axb5 32. Nd3 Bxd3 33.
Rxd3 Rc1+) 30. Kxf1 Rxe8 31. Nd3 (31. Kf2 {looks sharper.} a5 32. g3 Rc8 33.
Bc3 Bf7 34. Bxa5 Ra8 35. Bc3) 31... Bxd3+ (31... Rc8 {is interesting.} 32. Nc5
Bc2 33. Ra1 Bf5 34. b3 b6) 32. Rxd3 $11 {[%mdl 4096] Endgame KRB-KRB} Rd8 33.
Rc3 {Hoping for Rc7!} Rd7 34. Ke2 Kg6 35. Kd3 Bf4 36. Rc8 Kf7 37. h4 h5 38. g4
(38. Rh8 $1 $16) 38... hxg4 (38... Bg3 $14) 39. fxg4 $16 Rc7 40. Rd8 Ke6 41. h5
Bg5 42. Re8+ Kf7 43. Re5 Bf6 44. Rf5 ({Don't play} 44. Rxd5 $6 Ke6 $16) 44...
Ke6 45. Bxf6 gxf6 $18 {[#] KR-KR} 46. h6 $1 Rh7 $2 (46... Rc8 {was necessary.}
47. Rh5 Rg8) 47. Rh5 Kf7 {[#]} 48. Kd4 $1 {[%cal Rd4d5]} Kg6 49. Kxd5 Rd7+ 50.
Ke6 Rh7 (50... Rd8 51. Ke7 Rh8) 51. a4 b5 52. axb5 axb5 53. b4 Rh8 54. h7 Re8+
55. Kd7 Rh8 56. Kc6 {Weighted Error Value: White=0.08/Black=0.47} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "8.8"]
[White "Bluebaum, Matthias"]
[Black "Shankland, Sam"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "2670"]
[BlackElo "2691"]
[Annotator "TA"]
[PlyCount "60"]
[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 9,60,25,21,16,28,26,37,20,28,25,29,29,18,26,35,33,10,-23,-33,-78,-25,
-44,0,-2,0,-79,-71,-90,-91,-131,-135,-128,-120,-188,-170,-417,-409,-730,-720,
-723,-710,-699,-685,-1192,-1191,-2267,-2218,-1881,-1313,-1291,-1208,-1583,
-1225]} 1. d4 Nf6 2. Nf3 d5 3. e3 c6 4. h3 Bf5 5. g4 {[#]} Bg6 $146 ({
Predecessor:} 5... Be6 6. Nc3 g6 7. Bg2 Bg7 8. b3 a5 9. a4 Na6 10. Ba3 Qc7 11.
Rc1 Rd8 {1-0 (47) Sodomski,A (2304)-Relyea,A (2340) ICCF email 2018}) 6. Ne5 {
D04: Colle System.} Nfd7 7. Nxg6 hxg6 8. Bg2 {White is slightly better.} e6 9.
Nd2 f5 10. c4 Nf6 11. g5 Ne4 12. Nxe4 dxe4 13. h4 (13. Qb3 $5 {[%cal Rb3b7]})
13... c5 14. dxc5 Nc6 (14... Nd7 $1 $17) 15. a3 Bxc5 16. b4 Bd6 17. Qb3 (17. c5
$1 $11 {remains equal.} Bc7 18. Ra2) 17... Kf7 $17 18. c5 Be5 $36 {[%mdl 2048]
Black is on the roll.} 19. Ra2 {[#]} Rxh4 $3 {[%mdl 576] Remove Defender, Decoy
} 20. Rxh4 {Hoping for Kf1.} Qxg5 {[%mdl 64] Double Attack} 21. b5 {[#]} Na5 $1
$19 {[%cal Ra5b3]} 22. Qb4 (22. Qd1 {only move.} Qxh4 23. Qa4) 22... Qxg2 23.
Bd2 {[#]} (23. Rd2 $142 Qg1+ 24. Ke2 Qxc1 25. Rd1 Qc2+ 26. Rd2) 23... g5 $1 {
Black is clearly winning.} 24. Rh7 {[#]} Kg6 $1 25. Qxa5 Kxh7 26. Kd1 Qxf2 27.
c6 b6 28. Qb4 Qf1+ 29. Be1 Bg3 30. c7 Bxc7 {Weighted Error Value: White=0.86/
Black=0.23} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "9.1"]
[White "Shankland, Sam"]
[Black "Dubov, Daniil"]
[Result "0-1"]
[ECO "D08"]
[WhiteElo "2691"]
[BlackElo "2710"]
[Annotator "RC"]
[PlyCount "142"]
[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]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e5 {[%emt 0:
00:00]} 3. dxe5 {[%emt 0:00:00]} Ne7 {[%emt 0:00:00]} 4. Nf3 {[%emt 0:00:13]}
Nbc6 {[%emt 0:00:00]} 5. Nbd2 {[%emt 0:01:01]} dxc4 {[%emt 0:00:28]} 6. e3 {
[%emt 0:00:21]} Ng6 {[%emt 0:00:12]} 7. Qa4 {[%emt 0:01:28]} Bd7 {[%emt 0:00:
39]} 8. e6 {[%emt 0:00:28]} Bxe6 {[%emt 0:00:12]} 9. Bxc4 {[%emt 0:00:07]} Bxc4
{[%emt 0:00:29]} 10. Qxc4 {[%emt 0:00:45]} Be7 {[%emt 0:00:33]} 11. O-O {
[%emt 0:00:12]} O-O {[%emt 0:00:02]} 12. Qb5 {[%emt 0:01:08]} Rb8 {[%emt 0:01:
16]} 13. Ne4 {[%emt 0:00:38]} Qd7 {[%emt 0:00:46]} 14. Bd2 {[%emt 0:00:19]}
Nce5 {[%emt 0:00:35]} 15. Qxd7 {[%emt 0:00:07]} Nxd7 {[%emt 0:00:01]} 16. Rac1
{[%emt 0:00:22]} c5 {[%emt 0:00:27]} 17. Rfd1 {[%emt 0:00:22]} Rfd8 {[%emt 0:
00:13]} 18. Bc3 {[%emt 0:00:41]} Ngf8 {[%emt 0:01:04]} 19. Kf1 {[%emt 0:00:45]}
Ne6 {[%emt 0:00:07]} 20. b3 {[%emt 0:00:27]} f6 {[%emt 0:00:37]} 21. Ke2 {
[%emt 0:00:18]} Kf7 {[%emt 0:00:10]} 22. g4 {[%emt 0:00:19]} Nb6 {[%emt 0:00:
25]} 23. Ba5 {[%emt 0:00:16]} Rxd1 {[%emt 0:00:37]} 24. Rxd1 {[%emt 0:00:02]}
Na8 {[%emt 0:00:34]} 25. h4 {[%emt 0:00:23]} b6 {[%emt 0:00:09]} 26. Bc3 {
[%emt 0:00:02]} Rd8 {[%emt 0:00:13]} 27. Rxd8 {[%emt 0:00:37]} Nxd8 {[%emt 0:
00:03]} 28. g5 {[%emt 0:00:16]} Ne6 {[%emt 0:00:32]} 29. gxf6 {[%emt 0:00:42]}
gxf6 {[%emt 0:00:02]} 30. Ng3 {[%emt 0:00:09]} Nac7 {[%emt 0:00:16]} 31. Nf5 {
[%emt 0:00:20]} Nd5 {[%emt 0:00:21]} 32. Bd2 {[%emt 0:00:03]} Bf8 {[%emt 0:00:
18]} 33. a4 {[%emt 0:00:38]} a6 {[%emt 0:00:47]} 34. Kd3 {[%emt 0:00:34]} b5 {
[%emt 0:00:55]} 35. axb5 {[%emt 0:00:04]} axb5 {[%emt 0:00:01]} 36. Ba5 {
[%emt 0:00:16]} Ng7 {[%emt 0:00:58]} 37. Nxg7 {[%emt 0:00:24]} Bxg7 {[%emt 0:
00:03]} 38. h5 {[%emt 0:00:37]} Ke6 {[%emt 0:00:13]} 39. Bd2 {[%emt 0:01:22]}
Bh6 {[%emt 0:00:45]} 40. Nh4 {[%emt 0:00:58]} Bg5 {[%emt 0:00:22]} 41. Ng2 {
[%emt 0:00:08]} f5 {[%emt 0:00:08]} 42. f4 {[%emt 0:00:34]} Be7 {[%emt 0:00:03]
} 43. e4 {[%emt 0:00:32]} fxe4+ {[%emt 0:00:13]} 44. Kxe4 {[%emt 0:00:01]} Nf6+
{[%emt 0:00:01]} 45. Kf3 {[%emt 0:00:00]} Nxh5 {[%emt 0:00:09]} 46. Ne3 {
[%emt 0:00:01]} Nf6 {[%emt 0:00:26]} 47. f5+ {[%emt 0:00:13]} Kd6 {[%emt 0:00:
05]} 48. Be1 {[%emt 0:00:24]} Nd5 {[%emt 0:00:41]} 49. Bg3+ {[%emt 0:00:06]}
Kc6 {[%emt 0:00:02]} 50. Ng4 {[%emt 0:00:01]} Bd6 {[%emt 0:00:15]} 51. Bh4 {
[%emt 0:00:21]} h5 {[%emt 0:00:40]} 52. Nf2 {[%emt 0:00:09]} Be5 {[%emt 0:00:
13]} 53. Ne4 {[%emt 0:00:24]} Nb6 {[%emt 0:01:05]} 54. f6 {[%emt 0:01:07]} Nd7
{[%emt 0:00:04]} 55. f7 {[%emt 0:00:13]} Kd5 {[%emt 0:00:09]} 56. Bg3 {[%emt 0:
01:26]} Bg7 {[%emt 0:01:13]} 57. Nd6 {[%emt 0:00:04]} Kc6 {[%emt 0:01:30]} 58.
Ke4 {[%emt 0:00:14]} h4 {[%emt 0:00:03]} 59. Bh2 {[%emt 0:00:04]} Bf8 {[%emt 0:
00:30]} 60. Nf5 {[%emt 0:00:03]} h3 {[%emt 0:00:04]} 61. Bg3 {[%emt 0:00:30]}
b4 {[%emt 0:01:16]} 62. Kf3 {[%emt 0:00:34]} Kd5 {[%emt 0:00:05]} 63. Kg4 {
[%emt 0:00:01]} Ne5+ {[%emt 0:00:25]} 64. Kxh3 {[%emt 0:00:14]} Nxf7 {[%emt 0:
00:02]} 65. Ne3+ {[%emt 0:00:14]} Kd4 {[%emt 0:00:06]} 66. Nc4 {[%emt 0:00:02]}
Kc3 {[%emt 0:00:06]} 67. Na5 {[%emt 0:00:00]} Bd6 {[%emt 0:00:25]} 68. Bf2 {
[%emt 0:00:11]} Ne5 {[%emt 0:00:33]} 69. Be1+ {[%emt 0:00:29]} Kc2 {[%emt 0:00:
10]} 70. Bg3 {[%emt 0:00:05]} Bc7 {[%emt 0:00:15]} 71. Nb7 {[%emt 0:00:20]} c4
{[%emt 0:00:01]} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "9.2"]
[White "Dominguez Perez, Leinier"]
[Black "Bluebaum, Matthias"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2758"]
[BlackElo "2670"]
[Annotator "TA"]
[PlyCount "82"]
[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 20,82,4,-16,-10,-12,0,0,0,0,0,0,0,-19,0,1,13,0,4,-23,-10,-10,-10,-11,
-11,-11,-19,-24,-31,-26,0,0,7,4,4,5,11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,
0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6
7. Be3 a6 8. a3 cxd4 9. Nxd4 Bc5 10. Qd2 O-O 11. O-O-O Rb8 {C11: French:
Classical System: 4 e5 and 4 Bg5 dxe4.} 12. h4 Bxd4 13. Bxd4 b5 14. Rh3 Nxd4
15. Qxd4 Qe7 {[#]} 16. h5 $146 ({Predecessor:} 16. b4 Nb6 17. h5 Bd7 18. Qc5
Qd8 19. Bd3 Re8 20. g4 a5 21. g5 axb4 22. axb4 {1-0 (55) Trent,B (2380)-Haugen,
A (2391) ICCF email 2018}) 16... h6 17. b4 f6 18. exf6 Qxf6 19. Rf3 Qxd4 20.
Rxd4 Nf6 21. a4 {[%cal Ra4b5]} Bd7 22. axb5 axb5 23. Be2 Nxh5 24. f5 {[#]
Hoping for fxe6.} exf5 (24... e5 $5 {[%cal Re5d4]} 25. Rxd5 Bc6 26. Rxe5 Bxf3
27. Bxf3 Ng3 $15) 25. Nxd5 {aiming for Ne7+.The position is equal.} Rfe8 26.
Bd3 {And now Rh3 would win.} Re5 27. Rh3 Bc6 28. Rxh5 Rxd5 29. Rxd5 Bxd5 30.
Rxf5 Bxg2 31. Rxb5 Rxb5 32. Bxb5 $11 {[%mdl 4096] Endgame KB-KB} h5 {[#]
Strongly threatening ...h4.} 33. Kd2 h4 {...h3 is the strong threat.} 34. Ke3
g5 35. Be2 Kf8 36. c4 Ke7 37. c5 Bd5 38. Bg4 Bc6 39. Kf2 $1 Bb5 40. Be2 Bxe2
41. Kxe2 g4 {Not much happened in this game.  Weighted Error Value: White=0.03/
Black=0.03} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "9.3"]
[White "Duda, Jan-Krzysztof"]
[Black "Aronian, Levon"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2743"]
[BlackElo "2781"]
[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 17,71,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,148,148,148,0,0,0,0,0,10,10,10,0,10,0,10,0]} 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. dxe5 Nxe5 10. Nxe5
{C78: Ruy Lopez: Archangelsk and Möller Defences.} dxe5 11. Qxd8+ Kxd8 12. Bxf7
Rf8 13. Bd5 Nxd5 14. exd5 Bb7 15. Be3 Bxe3 16. fxe3 Rxf1+ 17. Kxf1 Bxd5 $11 {
[%mdl 4096] Endgame KRB-KRN} 18. Nd2 Ke7 19. e4 {[#]} Bc4+ $146 ({Predecessor:
} 19... Bc6 20. Ke2 Rf8 21. Ke3 a5 22. g3 h6 23. Rf1 Rxf1 24. Nxf1 Bd7 25. b4
axb4 26. cxb4 Kd6 27. a3 c5 28. Nd2 cxb4 29. axb4 Be6 30. Nb1 {1/2-1/2 (30)
Solak,D (2601)-Nasuta,G (2517) Skopje 2019}) 20. Nxc4 bxc4 {KR-KR} 21. Rd1 Rd8
22. Rxd8 Kxd8 {KP-KP} 23. Kf2 Ke7 24. Kg3 Kf6 25. Kh4 g6 26. g4 a5 27. g5+ Ke6
28. a4 c5 (28... Ke7 $11 {keeps the balance.}) 29. Kg4 $16 Kd6 30. h4 (30. Kf3
$16) 30... Ke6 {The position is equal.} 31. h5 (31. Kg3 {seems wilder.} Kd7 32.
Kh3 Kd6 33. Kg2 Ke7 34. Kf2) 31... Kd6 32. h6 Ke6 33. Kh4 Kd6 34. Kg4 Ke6 35.
Kh4 Kd6 36. Kg4 {Weighted Error Value: White=0.07/Black=0.14} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "9.4"]
[White "Grischuk, Alexander"]
[Black "So, Wesley"]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2777"]
[BlackElo "2770"]
[Annotator "TA"]
[PlyCount "74"]
[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 16,74,27,0,-7,-9,0,0,0,0,0,-3,0,0,8,0,0,0,0,0,0,0,0,-19,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 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. h3
Bd7 {The position is equal. C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 10.
Rd1 Be7 {10...Kc8 injects fresh life into this line.} 11. g4 Nh4 12. Nxh4 Bxh4
13. Nd2 Kc8 14. Nf3 Be7 15. Bg5 Bc5 16. Rd3 {[#] Black must now prevent Rad1.}
Be6 17. Be3 Bxe3 18. Rxe3 Kd7 19. Ng5 (19. Rd1+ {is interesting.} Ke7 20. Nd4
h5 21. Nf5+ Kf8 22. Ra3) 19... Ke7 20. Nxe6 Kxe6 $11 {[%mdl 4096] Endgame
KRR-KRR} 21. f4 g6 22. Rd1 Rad8 23. Red3 Rxd3 24. Rxd3 {KR-KR} h5 {[#]} 25. g5
$146 ({Predecessor:} 25. Kg2 hxg4 26. hxg4 a5 27. Kg3 Rh1 28. Rd8 g5 29. fxg5
Rg1+ 30. Kf3 Rf1+ 31. Kg3 Rg1+ 32. Kf3 Rf1+ 33. Kg3 Rg1+ {1/2-1/2 (33) Leko,P 
(2737)-Adams,M (2743) Dortmund 2014}) 25... a5 26. Kf2 a4 27. Ke3 Ra8 28. Ke4
Ra5 29. c4 Ra8 30. Rf3 Rd8 31. Rd3 Ra8 32. Rd2 c5 33. Rd5 b6 34. Rd3 Rb8 35.
Rd5 Ra8 36. Ke3 Rb8 37. Ke4 Ra8 {Not much happened in this game.  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 "9.5"]
[White "Giri, Anish"]
[Black "Vachier-Lagrave, Maxime"]
[Result "1-0"]
[ECO "B67"]
[WhiteElo "2764"]
[BlackElo "2784"]
[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 21,95,23,24,20,31,15,16,22,55,62,58,66,54,62,64,50,60,37,97,85,194,109,
105,104,107,103,177,184,183,174,172,181,177,177,170,182,172,32,172,148,493,471,
629,322,353,350,361,345,330,0,375,364,552,541,443,562,531,501,488,158,257,130,
150,149,142,135,495,589,578,513,654,231,1983,1822,29989,29990]} 1. e4 c5 2. Nf3
d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. Kb1
Be7 10. Nxc6 $5 {[%mdl 4] An interesting side line.} Bxc6 11. f3 b5 12. h4 {
B67: Sicilian: Richter-Rauzer: 7...a6 8 0-0-0 Bd7, lines without 9 f4 Be7.} Qc7
13. Ne2 h6 14. Be3 {The position is equal.} d5 15. e5 {[%cal Re5f6]} Nd7 {
[%cal Rd7e5]} ({Don't go for} 15... Qxe5 $2 16. Bf4 $18) 16. f4 Nc5 17. Nd4 Ne4
18. Qe1 Bd7 {[#]} 19. g4 $146 ({Predecessor:} 19. Bd3 b4 20. Bxe4 dxe4 21. Qg3
Rg8 22. Rd2 h5 23. Rhd1 Rd8 24. Qf2 Bc8 25. f5 exf5 26. Nxf5 Rxd2 27. Rxd2 Qxe5
28. Nxe7 Qxe7 {1-0 (32) Mutschnik,I (2414)-Martin,S (2273) Germany 2006}) 19...
O-O-O (19... b4 $14) 20. Bd3 g5 (20... Kb8 $16) 21. f5 (21. fxg5 $18 hxg5 22.
Rf1) 21... gxh4 $16 22. f6 Bc5 23. Rxh4 Qxe5 (23... Bb6 $16 {might work better.
}) 24. Bxe4 $18 Qxe4 25. Qc3 Kb7 {[#]} 26. Nxe6 $1 {[%mdl 512]} Bxe6 27. Qxc5
d4 28. Bxd4 Qc6 29. Qa7+ Kc8 {aiming for ...Rd7.} 30. Rh5 $1 {[%cal Rh5c5]
White wants to mate with Rc5!} Rd5 {[%mdl 8192]} (30... Rd7 $16 31. Rc5 Rxa7
32. Rxc6+ {[%mdl 64] Discovered Attack} Rc7 33. Rxa6 Bd5) 31. Rxd5 Bxd5 32. Bb6
{Threatens to win with Rxd5!} Re8 {intending ...Qb7.} 33. Qxa6+ Kd7 34. Qa7+
Kc8 35. Qa6+ $2 ({Better is} 35. b3 $18 {And now Rxd5! would win.} Re2 36. c4
Be4+ 37. Ka1 Qxf6+ 38. Bd4) 35... Kb8 $2 {[%mdl 8192]} (35... Kd7 $11 {and
Black stays safe.} 36. Qa7+ Kc8) 36. a4 bxa4 (36... Bf3 $142 37. axb5 Qb7) 37.
Ba7+ Ka8 {[#]} 38. Qa5 Bc4 {Black hopes to continue with ...Qa6.} 39. Bb6+ Kb7
40. Qa7+ (40. Bf2 $142 {Qa7+ is the strong threat.} Ba6 41. Rd5) 40... Kc8 {[#]
} 41. Bc7 Qb7 $16 42. Qxa4 $40 {[%csl Gd1][%cal Ra4d7][%mdl 192] Double Attack.
White wants a kill.} Bb5 43. Qa5 Be2 $2 {[%mdl 8192]} (43... Qa6 $16 44. Rh1
Qxa5 45. Bxa5 Re4 46. Rxh6 Rxg4) 44. Rd4 $18 {Black must now prevent Bg3.} ({
Stronger than} 44. Qf5+ Re6 $11) 44... Qh1+ 45. Ka2 {White threatens Qc5 and
mate.} Qc6 46. Bg3 $2 (46. Bb6) 46... Bc4+ $2 (46... Qa6 47. Qxa6+ Bxa6) 47. b3
Ba6 48. Kb2 {Weighted Error Value: White=0.42/Black=0.79} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "9.6"]
[White "Nepomniachtchi, Ian"]
[Black "Carlsen, Magnus"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2789"]
[BlackElo "2862"]
[Annotator "TA"]
[PlyCount "69"]
[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 15,69,24,18,18,20,10,5,7,8,3,23,-1,15,15,18,25,22,10,55,33,104,37,57,56,
94,64,75,77,73,52,117,69,66,33,138,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. d3 Be7 8. Nc3
{[%cal Bb1c3,Bc3e2,Be2g3][%mdl 32]} O-O 9. a3 {C84: Closed Ruy Lopez: Unusual
White 6th moves.} d6 10. Ne2 d5 11. exd5 Nxd5 12. Re1 Kh8 13. Ng3 f6 14. c3 Qd7
15. d4 {[#]} exd4 $146 ({Predecessor:} 15... Rad8 16. dxe5 fxe5 17. Nxe5 Nxe5
18. Rxe5 Bc5 19. Ne4 Bb6 20. Bg5 Nf6 21. Nxf6 Qxd1+ 22. Rxd1 Rxd1+ 23. Bxd1
gxf6 {0-1 (40) Jens,J (2386)-Van de Oudeweetering,A (2324) Netherlands 2011})
16. cxd4 Rad8 17. Qd3 f5 (17... Na5 $14) 18. Bc2 (18. Bd2 $16) 18... g6 19. Bh6
Rfe8 20. Bb3 Bf6 21. Qd2 Nb6 {[%cal Rc6d4]} 22. Bg5 Qg7 ({Better is} 22... Bxg5
$14 23. Qxg5 Qg7) 23. Rxe8+ Rxe8 24. Re1 Re7 (24... Rxe1+ $14 25. Qxe1 Ne7) 25.
d5 ({White should play} 25. Ne2 $1 $16 {Threatens to win with Bh6.} Nc4 26.
Bxf6 Qxf6 27. Bxc4 bxc4 28. h3) 25... Nd4 {The position is equal.} 26. Bxf6
Nxf3+ 27. gxf3 Rxe1+ $1 28. Qxe1 {[%cal Re1e8]} Qxf6 29. Qe8+ Kg7 30. Qb8 $1 {
[%cal Rb8c7][%mdl 64] Double Attack} Bxd5 31. Qxc7+ Kh6 32. Qf4+ Kg7 (32... Qg5
$2 33. Qd6 $1 $18 {[%mdl 512]}) 33. Qc7+ Kh6 34. Qf4+ Kg7 ({Avoid the trap} 
34... Qg5 $2 {[#]} 35. Qd6 $1 $18 {[%mdl 512]}) 35. Qc7+ {Accuracy: White =
76%, Black = 77%.} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "9.7"]
[White "Nakamura, Hikaru"]
[Black "Ding, Liren"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2736"]
[BlackElo "2791"]
[Annotator "TA"]
[PlyCount "103"]
[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 9,103,0,6,-4,9,-15,-14,-22,12,17,36,33,58,60,70,88,93,58,79,27,67,63,85,
72,83,82,89,84,83,73,100,92,121,124,127,104,120,77,106,63,70,68,59,35,33,36,17,
25,40,27,33,33,33,33,33,29,55,0,39,0,0,0,0,-38,-28,-41,-15,-9,0,0,0,-14,-14,
-14,-14,-96,-43,-45,-47,-58,-14,-14,-14,-14,-5,-14,0,0,113,120,175,154,526,558,
578,575]} 1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 e4 5. Ne2 a6 6. Bxc6 {A01:
Nimzowitsch-Larsen Opening.} dxc6 7. Ng3 h5 8. Nc3 {The position is equal.} Qe7
{White should prevent ...h4.} 9. h4 {[#]} Rh6 $146 ({Predecessor:} 9... Bg4 10.
f3 Qe5 11. Ngxe4 Nxe4 12. Nxe4 Qxb2 13. fxg4 Qe5 14. Nf2 hxg4 15. Nxg4 Qg3+ 16.
Nf2 Qxg2 17. Qg4 Qxg4 18. Nxg4 g6 {0-1 (18) Rachow,T (1802)-Wolter,U DESC
email 2006}) 10. Qe2 Bg4 11. f3 exf3 12. gxf3 Bd7 13. O-O-O O-O-O 14. Qf2 ({
White should play} 14. e4 $16) 14... Kb8 15. e4 Bc8 16. Kb1 c5 17. d3 Qe8 18.
Rhe1 Nd7 19. Nf5 Rc6 20. Nd5 Ne5 21. Qg3 f6 22. Nfe3 b5 23. Rg1 Kb7 24. Qf2 a5
25. Qe2 Ra6 26. Rg2 a4 27. Rdg1 axb3 28. axb3 Be6 29. Rxg7 Bxg7 30. Rxg7 Bxd5
31. Nxd5 Rd7 32. Rg3 Rf7 33. Qg2 (33. f4 $14 Ng4 34. f5) 33... Ra8 (33... c6 $5
{[%cal Rc6d5]} 34. Ne3 Qd7 $11) 34. Rg7 (34. f4 $5 {[%cal Rf4e5]} Ng4 35. f5
$14) 34... Qf8 35. Rxf7 Qxf7 36. Qf2 Nd7 37. Qg3 Rc8 38. Qf4 {[%cal Rd5f6]} Qg6
39. Bc1 {[#] Ne7 is the strong threat.} Qf7 40. Qf5 c6 41. Ne3 Rg8 42. f4 (42.
Qf4 $11) 42... Kc7 ({Black should try} 42... Rg1 $17) 43. Bd2 $15 Ra8 44. Qh3
Kb6 45. Bc1 Nf8 46. Nf5 (46. Qg3 {looks sharper.} Qg6 47. Qh2 Qe8 48. Nf5 Nd7
49. Qf2) 46... Ne6 {Strongly threatening ...Qa7.} 47. Qe3 Qa7 {[%csl Ga8][%cal
Ra7a2]} 48. Bb2 Rf8 {[#]} (48... Qa2+ $11 {keeps the balance.} 49. Kc1 Rg8) 49.
Ng3 $1 $16 {[%mdl 1024] White has strong compensation.} Qh7 (49... Nd4 $16) 50.
f5 Nd4 (50... Nc7 $16 {is more resistant.}) 51. b4 $18 {[%cal Bb3b4,Bb4c5]
[%mdl 32]} Kb7 52. bxc5 {Weighted Error Value: White=0.12/Black=0.32} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "9.8"]
[White "Vidit, Santosh Gujrathi"]
[Black "Radjabov, Teimour"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2726"]
[BlackElo "2765"]
[Annotator "TA"]
[PlyCount "78"]
[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 9,78,0,11,11,10,0,10,0,6,2,13,0,0,13,25,33,46,41,34,31,33,20,17,9,0,8,
16,16,8,0,34,22,50,0,18,17,11,0,0,0,18,0,0,-13,0,0,0,-18,0,0,0,0,16,23,29,0,23,
0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 c6 5. e4 d5
6. e5 {A16: English Opening: 1...Nf6 with ...d5.} Ne4 7. d4 O-O 8. cxd5 cxd5 9.
Bg2 Nc6 10. O-O Nxc3 11. bxc3 {[#]} Qa5 $146 ({Predecessor:} 11... Bf5 12. Nh4
Bc8 13. f4 e6 14. Nf3 b6 15. Ba3 Re8 16. h4 Na5 17. h5 Nc4 {1-0 (35) Grischuk,
A (2777)-Mamedov,R (2654) chess24.com INT 2020}) 12. Bd2 Qa6 13. Ng5 h6 14. Nh3
Na5 15. Nf4 e6 16. h4 Bd7 17. a4 Rac8 18. Re1 Qb6 19. Qg4 {With the idea Nxd5!}
Nc4 {[#]} 20. Reb1 $1 Qc7 (20... Qa5 21. Be1) 21. Be1 a6 22. Bf1 b5 23. axb5
Bxb5 24. Bd3 Rfe8 25. Bc2 Qe7 26. Rd1 Nb2 27. Rdb1 Nc4 28. Rd1 Nb2 29. Rdc1 Nc4
30. Ra2 a5 31. Rca1 Ra8 32. Nd3 Rec8 33. Qd1 h5 {The position is equal.} 34.
Nb2 Qc7 35. Nxc4 Bxc4 36. Ra4 Bb5 37. R4a2 Bc4 38. Ra4 Bb5 39. R4a2 Bc4 {
Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "10.1"]
[White "Dubov, Daniil"]
[Black "Radjabov, Teimour"]
[Result "1/2-1/2"]
[ECO "D24"]
[WhiteElo "2710"]
[BlackElo "2765"]
[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 9,79,20,31,-6,9,8,8,14,1,25,33,31,41,45,62,36,39,31,25,9,4,4,5,0,7,0,10,
4,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c5 (4... Be7 5. g4 O-O 6. g5
Ne4 7. Bg2 c5 8. dxc5 Nxc3 9. bxc3 Bxc5 10. h4 Nc6 11. h5 dxc4 12. Qc2 e5 13.
Rb1 Bb6 14. Nh4 f5 15. gxf6 Qxf6 16. e3 {0-1 (63) Dubov,D (2702)-Radjabov,T 
(2765) chess24.com INT 2021}) 5. Bg5 dxc4 6. e4 {D24: Queen's Gambit Accepted:
3 Nf3 Nf6 4 Nc3.} cxd4 7. Qxd4 Qxd4 8. Nxd4 a6 9. Bxc4 Nbd7 {[#]} 10. f3 $146 (
{Predecessor:} 10. O-O b5 11. Bd3 Bb7 12. Rfe1 Bb4 13. a3 Bxc3 14. bxc3 Nc5 15.
Bxf6 Nxd3 16. Re3 gxf6 17. Rxd3 Bxe4 {0-1 (41) Trevis,R (1470)-Xyko,K (1399)
Chessfriend.com 2003}) 10... Bc5 11. Nb3 Ba7 12. Be2 Ne5 13. Bh4 Nh5 14. Bf2 (
14. g3 {seems wilder.} Ng6 15. Bg5 Bd7 16. O-O-O h6 17. Bd2) 14... Nf4 {
The position is equal.} 15. Bxa7 Rxa7 16. Kf2 Bd7 17. Rhd1 Nxe2 18. Kxe2 Ke7
19. Nc5 Rc8 20. Nxd7 Nxd7 21. Rac1 Raa8 22. Na4 Rxc1 23. Rxc1 $11 {[%mdl 4096]
Endgame KRN-KRN} b5 24. Nc5 Rc8 25. Nd3 Rxc1 26. Nxc1 {KN-KN} Kd6 27. Nd3 Nc5
28. Ke3 Nxd3 29. Kxd3 {KP-KP} e5 30. b4 g5 31. Ke3 Ke6 32. g3 f6 33. g4 h6 34.
h3 Ke7 35. Kd3 Kd7 36. a3 Kc7 37. Kc3 Kd7 38. Kd3 Kc7 39. Kc3 Kd7 40. Kd3 {
Weighted Error Value: White=0.04/Black=0.02} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "10.2"]
[White "Ding, Liren"]
[Black "Vidit, Santosh Gujrathi"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2791"]
[BlackElo "2726"]
[Annotator "RC"]
[PlyCount "101"]
[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. c4 {[%emt 0:00:00]} c5 {[%emt 0:00:00]} 2. g3 {[%emt 0:00:00]} g6 {[%emt 0:
00:00]} 3. Bg2 {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:00]}
Nc6 {[%emt 0:00:00]} 5. Rb1 {[%emt 0:00:00]} Nf6 {[%emt 0:00:10]} 6. a3 {
[%emt 0:00:09]} O-O {[%emt 0:00:03]} 7. b4 {[%emt 0:00:04]} cxb4 {[%emt 0:00:
01]} 8. axb4 {[%emt 0:00:01]} a6 {[%emt 0:00:01]} 9. d4 {[%emt 0:02:18]} d6 {
[%emt 0:00:38]} 10. Nf3 {[%emt 0:00:26]} Bf5 {[%emt 0:00:55]} 11. Rb2 {[%emt 0:
03:07]} Ne4 {[%emt 0:00:34]} 12. Nd5 {[%emt 0:01:17]} b5 {[%emt 0:01:08]} 13.
cxb5 {[%emt 0:00:37]} axb5 {[%emt 0:00:00]} 14. O-O {[%emt 0:00:01]} Ra1 {
[%emt 0:03:58]} 15. Qc2 {[%emt 0:01:14]} Nxd4 {[%emt 0:02:28]} 16. Nxd4 {
[%emt 0:00:06]} Bxd4 {[%emt 0:00:02]} 17. Bxe4 {[%emt 0:00:14]} Rxc1 {[%emt 0:
00:08]} 18. Rxc1 {[%emt 0:00:06]} Bxb2 {[%emt 0:00:05]} 19. Qxb2 {[%emt 0:00:
07]} Bxe4 {[%emt 0:00:01]} 20. Rc8 {[%emt 0:00:01]} Bxd5 {[%emt 0:00:09]} 21.
Rxd8 {[%emt 0:00:02]} Rxd8 {[%emt 0:00:00]} 22. Qd4 {[%emt 0:00:30]} Bc4 {
[%emt 0:00:11]} 23. Qa7 {[%emt 0:00:12]} Kf8 {[%emt 0:00:29]} 24. Kf1 {[%emt 0:
00:02]} f6 {[%emt 0:00:23]} 25. f3 {[%emt 0:00:05]} Kf7 {[%emt 0:00:09]} 26.
Kf2 {[%emt 0:00:09]} d5 {[%emt 0:00:27]} 27. e3 {[%emt 0:00:18]} h5 {[%emt 0:
00:27]} 28. h4 {[%emt 0:00:11]} Bd3 {[%emt 0:00:27]} 29. Ke1 {[%emt 0:00:33]}
Bc4 {[%emt 0:00:15]} 30. Kd2 {[%emt 0:00:06]} Rg8 {[%emt 0:00:45]} 31. Kc3 {
[%emt 0:00:31]} Be2 {[%emt 0:01:37]} 32. Qb7 {[%emt 0:00:13]} Rd8 {[%emt 0:00:
11]} 33. Kd4 {[%emt 0:00:24]} Bc4 {[%emt 0:00:02]} 34. Kc5 {[%emt 0:00:12]} Ke8
{[%emt 0:00:40]} 35. g4 {[%emt 0:01:01]} hxg4 {[%emt 0:00:13]} 36. fxg4 {
[%emt 0:00:00]} Kf7 {[%emt 0:00:01]} 37. Qc7 {[%emt 0:00:14]} Rh8 {[%emt 0:00:
04]} 38. Qg3 {[%emt 0:00:09]} Rc8+ {[%emt 0:00:08]} 39. Kb6 {[%emt 0:00:03]}
Bd3 {[%emt 0:00:30]} 40. g5 {[%emt 0:01:15]} Rc4 {[%emt 0:01:13]} 41. Qg2 {
[%emt 0:01:09]} Re4 {[%emt 0:00:48]} 42. Qf3 {[%emt 0:00:22]} Kg7 {[%emt 0:00:
28]} 43. Kc7 {[%emt 0:00:40]} Bc4 {[%emt 0:00:24]} 44. Qg3 {[%emt 0:01:00]} Kf7
{[%emt 0:00:12]} 45. Qf2 {[%emt 0:00:13]} Ke6 {[%emt 0:00:50]} 46. Kd8 {
[%emt 0:00:47]} fxg5 {[%emt 0:01:00]} 47. hxg5 {[%emt 0:00:02]} Rg4 {[%emt 0:
00:02]} 48. Ke8 {[%emt 0:00:43]} Rxg5 {[%emt 0:00:14]} 49. Qf7+ {[%emt 0:00:03]
} Ke5 {[%emt 0:00:01]} 50. Qf4+ {[%emt 0:00:02]} Ke6 {[%emt 0:00:11]} 51. Qxg5
{[%emt 0:00:01]} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "10.3"]
[White "Carlsen, Magnus"]
[Black "Nakamura, Hikaru"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2862"]
[BlackElo "2736"]
[Annotator "RC"]
[PlyCount "65"]
[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. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:00]} Be7
{[%emt 0:00:00]} 5. Bf4 {[%emt 0:00:00]} O-O {[%emt 0:00:00]} 6. a3 {[%emt 0:
00:00]} c5 {[%emt 0:00:32]} 7. dxc5 {[%emt 0:00:01]} Bxc5 {[%emt 0:00:00]} 8.
b4 {[%emt 0:01:30]} Be7 {[%emt 0:01:29]} 9. e3 {[%emt 0:00:34]} a5 {[%emt 0:01:
55]} 10. cxd5 {[%emt 0:03:52]} Nxd5 {[%emt 0:02:02]} 11. Nxd5 {[%emt 0:00:02]}
exd5 {[%emt 0:00:00]} 12. b5 {[%emt 0:00:08]} Nd7 {[%emt 0:00:41]} 13. Be2 {
[%emt 0:00:50]} Nc5 {[%emt 0:00:03]} 14. O-O {[%emt 0:00:07]} a4 {[%emt 0:00:
06]} 15. Be5 {[%emt 0:00:24]} Nb3 {[%emt 0:00:51]} 16. Ra2 {[%emt 0:00:03]} Be6
{[%emt 0:00:01]} 17. Nd4 {[%emt 0:00:16]} Bd6 {[%emt 0:00:19]} 18. Nxe6 {
[%emt 0:02:08]} fxe6 {[%emt 0:00:00]} 19. Bb2 {[%emt 0:00:02]} Rc8 {[%emt 0:00:
47]} 20. g3 {[%emt 0:00:10]} Qd7 {[%emt 0:00:21]} 21. Bd3 {[%emt 0:00:40]} Qf7
{[%emt 0:01:42]} 22. e4 {[%emt 0:02:53]} Bc5 {[%emt 0:01:44]} 23. exd5 {
[%emt 0:00:18]} exd5 {[%emt 0:00:00]} 24. Be5 {[%emt 0:02:02]} Rce8 {[%emt 0:
02:23]} 25. Bf4 {[%emt 0:00:02]} h6 {[%emt 0:00:05]} 26. Qg4 {[%emt 0:00:37]}
Re6 {[%emt 0:00:19]} 27. h4 {[%emt 0:00:55]} h5 {[%emt 0:01:04]} 28. Qd1 {
[%emt 0:00:08]} Rf6 {[%emt 0:00:02]} 29. Kg2 {[%emt 0:00:54]} g6 {[%emt 0:00:
58]} 30. Bh6 {[%emt 0:00:45]} Re8 {[%emt 0:00:08]} 31. Bg5 {[%emt 0:00:06]}
Rfe6 {[%emt 0:00:04]} 32. Bc2 {[%emt 0:00:32]} Re1 {[%emt 0:02:19]} 33. Bxg6 {
[%emt 0:00:03]} 1-0

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "10.4"]
[White "Vachier-Lagrave, Maxime"]
[Black "Nepomniachtchi, Ian"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2784"]
[BlackElo "2789"]
[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 9,80,20,23,21,31,39,31,35,32,42,43,38,46,16,33,26,14,0,0,0,0,0,33,0,0,0,
0,0,21,33,37,26,45,51,51,30,52,60,48,49,86,52,54,40,42,31,48,0,45,0,0,0,6,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 {[%cal
Bb8d7,Bd7e5,Be5f3][%mdl 32]} 4. O-O a6 5. Bd3 Ngf6 6. Re1 {B51: Sicilian:
Moscow Variation (3 Bb5+) without 3...Bd7.} g6 7. c3 Ne5 8. Be2 {White is
slightly better.} Bg7 9. d4 Nxf3+ 10. Bxf3 O-O {[#]} 11. dxc5 $146 ({
Predecessor:} 11. Nd2 Nd7 12. Nb3 Rb8 13. Bf4 e5 14. Be3 c4 15. Nd2 b5 16. a4
Qc7 17. axb5 axb5 {1-0 (36) Gao,R (2543)-Peng,H (2207) Beijing 2017}) 11...
dxc5 12. Qxd8 Rxd8 13. e5 Nd5 14. a4 Bf5 15. a5 Rd7 16. Na3 Bd3 17. e6 fxe6 18.
Rxe6 Rad8 {Black wants to play ...Nxc3!} 19. Re1 Bf6 20. g3 Kg7 21. h4 h6 22.
Kg2 c4 23. Nb1 {[%cal Ba3b1,Bb1d2,Bd2e4][%mdl 32]} Rc7 24. Nd2 Rc5 25. Ne4 Rb5
26. Ra2 Rd7 27. Nd2 Rc7 28. Ra4 Rcc5 29. Bxd5 (29. Ne4 {with more
complications.} Rc7 30. Bg4 Bc2 31. Ra2 Bd3 32. Be6) 29... Rxd5 {The position
is equal.} 30. Nxc4 Rdc5 31. Ne3 Rxa5 32. Rxa5 Rxa5 33. Ng4 g5 34. hxg5 hxg5
35. Be3 Bf5 (35... Be4+ {seems wilder.} 36. f3 Bc6 37. Nxf6 exf6 38. g4 Ra2)
36. Nxf6 exf6 37. f3 g4 38. fxg4 Bxg4 39. Rf1 Rf5 {[#] White must now prevent .
..Bh3+!} 40. Rxf5 Bxf5 {Weighted Error Value: White=0.07/Black=0.07} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "10.5"]
[White "So, Wesley"]
[Black "Giri, Anish"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2770"]
[BlackElo "2764"]
[Annotator "TA"]
[PlyCount "36"]
[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 20,36,14,13,18,0,4,0,8,0,0,0,0,-4,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3
d5 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 O-O 8. Rc1 dxc4 9. Bxc4 c5 10. O-O
cxd4 11. Nxd4 {The position is equal.} Bd7 {D38: Queen's Gambit Declined:
Ragozin Defence (4 Nf3 Bb4).} 12. Qb3 Nc6 13. Nxc6 (13. Nf3 {seems wilder.}
Rfd8 14. a3 Ba5 15. Rfd1 Be8 16. Be2) 13... Bxc3 14. Rxc3 Bxc6 15. Bb5 Bd5 16.
Bc4 Bc6 17. Bb5 {[#]} Bd5 $146 ({Predecessor:} 17... Be4 18. Bd3 Bxd3 19. Rxd3
b6 20. Rfd1 Rad8 21. Rxd8 Rxd8 22. Rxd8+ Qxd8 23. g3 h5 24. h4 Qd7 25. Qc2 {
1/2-1/2 (31) Xu,Y (2557)-Xu,Y (2454) Xinghua 2017}) 18. Bc4 Bc6 {An uneventful
encounter.  Weighted Error Value: White=0.05/Black=0.02} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "10.6"]
[White "Aronian, Levon"]
[Black "Grischuk, Alexander"]
[Result "1/2-1/2"]
[WhiteElo "2781"]
[BlackElo "2777"]
[Annotator "TA"]
[PlyCount "45"]
[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 17,18,0,35]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 {[#]}
6. Be3 $146 ({Predecessor:} 6. h3 e5 7. Nf3 Be7 8. g4 O-O 9. g5 Nh5 10. Bc4 Be6
11. Bb3 g6 12. Be3 Nd7 13. Qd2 Rc8 14. O-O-O Nc5 15. Bxc5 Rxc5 16. h4 {1-0 (70)
Giri,A (2764)-Vachier Lagrave,M (2784) Wijk aan Zee 2021}) 6... Ng4 7. Bc1 Nf6
8. Be3 Ng4 9. Bc1 Nf6 10. f3 {10.Nd5 is setting a new trend. B80: Sicilian
Scheveningen: 6 g3 and 6 Be3, including English Attack.} e6 11. Be3 b5 12. Qd2
Nbd7 13. g4 b4 14. Nd1 h6 15. c4 bxc3 16. Nxc3 Bb7 17. h4 d5 18. Rg1 dxe4 19.
g5 hxg5 20. hxg5 Nd5 21. g6 Nxe3 22. gxf7+ Kxf7 23. Qxe3 {0-1 (30) Aronian,L 
(2767)-Grischuk,A (2766) Saint Louis 2018} 1/2-1/2

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "10.7"]
[White "Bluebaum, Matthias"]
[Black "Duda, Jan-Krzysztof"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2670"]
[BlackElo "2743"]
[Annotator "RC"]
[PlyCount "158"]
[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]} e6 {
[%emt 0:00:00]} 3. e3 {[%emt 0:00:00]} b6 {[%emt 0:00:00]} 4. Bd3 {[%emt 0:00:
00]} Bb7 {[%emt 0:00:01]} 5. O-O {[%emt 0:00:01]} d5 {[%emt 0:00:07]} 6. b3 {
[%emt 0:00:06]} Nbd7 {[%emt 0:00:02]} 7. c4 {[%emt 0:00:22]} dxc4 {[%emt 0:00:
30]} 8. bxc4 {[%emt 0:00:03]} c5 {[%emt 0:00:01]} 9. Nc3 {[%emt 0:00:10]} cxd4
{[%emt 0:00:04]} 10. exd4 {[%emt 0:00:00]} Be7 {[%emt 0:00:01]} 11. Re1 {
[%emt 0:00:19]} O-O {[%emt 0:00:02]} 12. Bb2 {[%emt 0:00:04]} Re8 {[%emt 0:00:
04]} 13. Rc1 {[%emt 0:00:11]} Qc7 {[%emt 0:00:10]} 14. d5 {[%emt 0:01:48]} exd5
{[%emt 0:01:40]} 15. Nxd5 {[%emt 0:01:11]} Nxd5 {[%emt 0:00:26]} 16. cxd5 {
[%emt 0:00:00]} Qd6 {[%emt 0:00:06]} 17. Bb5 {[%emt 0:00:46]} Bf8 {[%emt 0:01:
16]} 18. Rxe8 {[%emt 0:03:35]} Rxe8 {[%emt 0:00:00]} 19. Bc6 {[%emt 0:00:25]}
Bxc6 {[%emt 0:01:06]} 20. dxc6 {[%emt 0:00:00]} Nc5 {[%emt 0:01:58]} 21. Qxd6 {
[%emt 0:02:43]} Bxd6 {[%emt 0:00:00]} 22. Rd1 {[%emt 0:00:01]} Bb8 {[%emt 0:03:
33]} 23. Nd4 {[%emt 0:01:51]} Rd8 {[%emt 0:00:21]} 24. Rb1 {[%emt 0:00:39]} f6
{[%emt 0:02:50]} 25. Nb5 {[%emt 0:00:34]} Ne6 {[%emt 0:00:57]} 26. g3 {[%emt 0:
01:14]} a6 {[%emt 0:00:55]} 27. Nc3 {[%emt 0:00:20]} Rd6 {[%emt 0:00:12]} 28.
Ba3 {[%emt 0:00:46]} Rd3 {[%emt 0:01:09]} 29. Bb2 {[%emt 0:00:44]} b5 {[%emt 0:
00:31]} 30. Rc1 {[%emt 0:00:48]} Kf7 {[%emt 0:00:20]} 31. Ne4 {[%emt 0:00:20]}
Bc7 {[%emt 0:00:05]} 32. Rc2 {[%emt 0:00:29]} Rd5 {[%emt 0:00:29]} 33. Kg2 {
[%emt 0:00:23]} f5 {[%emt 0:00:20]} 34. Nd2 {[%emt 0:00:02]} g5 {[%emt 0:00:02]
} 35. h3 {[%emt 0:00:23]} h5 {[%emt 0:00:13]} 36. Nf1 {[%emt 0:00:04]} f4 {
[%emt 0:00:03]} 37. g4 {[%emt 0:00:20]} Rd3 {[%emt 0:00:33]} 38. f3 {[%emt 0:
00:19]} hxg4 {[%emt 0:00:13]} 39. hxg4 {[%emt 0:00:00]} Ba5 {[%emt 0:00:22]}
40. Be5 {[%emt 0:00:04]} Bc7 {[%emt 0:00:10]} 41. Bxc7 {[%emt 0:00:08]} Nxc7 {
[%emt 0:00:00]} 42. Nd2 {[%emt 0:00:01]} Rd5 {[%emt 0:00:23]} 43. Ne4 {[%emt 0:
00:05]} Ke7 {[%emt 0:00:01]} 44. Kf1 {[%emt 0:00:13]} Kd8 {[%emt 0:00:07]} 45.
Rh2 {[%emt 0:00:27]} Ne6 {[%emt 0:00:13]} 46. Rh6 {[%emt 0:00:21]} Nc5 {
[%emt 0:00:27]} 47. Nf6 {[%emt 0:00:17]} Rd3 {[%emt 0:00:27]} 48. Ke2 {[%emt 0:
00:08]} Re3+ {[%emt 0:00:07]} 49. Kf2 {[%emt 0:00:02]} Re6 {[%emt 0:00:17]} 50.
Rg6 {[%emt 0:00:14]} Nd3+ {[%emt 0:00:03]} 51. Kg2 {[%emt 0:00:02]} Rxc6 {
[%emt 0:00:10]} 52. Rxg5 {[%emt 0:00:17]} Rc2+ {[%emt 0:00:06]} 53. Kh3 {
[%emt 0:00:04]} Ne1 {[%emt 0:00:22]} 54. Rf5 {[%emt 0:00:19]} Nxf3 {[%emt 0:00:
09]} 55. Rxf4 {[%emt 0:00:01]} Ng1+ {[%emt 0:00:07]} 56. Kh4 {[%emt 0:00:01]}
Rh2+ {[%emt 0:00:01]} 57. Kg3 {[%emt 0:00:01]} Rxa2 {[%emt 0:00:01]} 58. Re4 {
[%emt 0:00:03]} Ra3+ {[%emt 0:00:12]} 59. Kf4 {[%emt 0:00:17]} Nh3+ {[%emt 0:
00:02]} 60. Ke5 {[%emt 0:00:04]} Kc7 {[%emt 0:00:03]} 61. Kd5 {[%emt 0:00:12]}
Ng5 {[%emt 0:00:25]} 62. Re5 {[%emt 0:00:12]} Rf3 {[%emt 0:00:31]} 63. Ne8+ {
[%emt 0:00:38]} Kd7 {[%emt 0:00:05]} 64. Rxg5 {[%emt 0:00:07]} Kxe8 {[%emt 0:
00:02]} 65. Kc5 {[%emt 0:00:08]} Rc3+ {[%emt 0:00:10]} 66. Kb6 {[%emt 0:00:03]}
Ra3 {[%emt 0:00:02]} 67. Rf5 {[%emt 0:00:05]} b4 {[%emt 0:00:08]} 68. Rf1 {
[%emt 0:00:29]} b3 {[%emt 0:00:09]} 69. g5 {[%emt 0:00:12]} b2 {[%emt 0:00:15]}
70. Rb1 {[%emt 0:00:04]} Ra2 {[%emt 0:00:02]} 71. g6 {[%emt 0:00:10]} Kf8 {
[%emt 0:00:11]} 72. Kc5 {[%emt 0:00:14]} a5 {[%emt 0:00:04]} 73. Kd4 {[%emt 0:
00:12]} a4 {[%emt 0:00:03]} 74. Ke5 {[%emt 0:00:11]} Kg7 {[%emt 0:00:25]} 75.
Kf5 {[%emt 0:00:07]} a3 {[%emt 0:00:06]} 76. Rd1 {[%emt 0:00:12]} Ra1 {[%emt 0:
00:06]} 77. Rd7+ {[%emt 0:00:02]} Kf8 {[%emt 0:00:11]} 78. g7+ {[%emt 0:00:09]}
Kg8 {[%emt 0:00:03]} 79. Kf6 {[%emt 0:00:09]} Rf1+ {[%emt 0:00:02]} 0-1

[Event "Opera Euro Rapid Prelims 2021"]
[Site "Online"]
[Date "2021.02.03"]
[Round "10.8"]
[White "Shankland, Sam"]
[Black "Dominguez Perez, Leinier"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2691"]
[BlackElo "2758"]
[Annotator "RC"]
[PlyCount "87"]
[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. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 4. Nc3 {[%emt 0:00:00]} Bb4
{[%emt 0:00:00]} 5. cxd5 {[%emt 0:00:00]} exd5 {[%emt 0:00:00]} 6. Bg5 {
[%emt 0:00:00]} h6 {[%emt 0:00:00]} 7. Bh4 {[%emt 0:00:00]} O-O {[%emt 0:00:00]
} 8. e3 {[%emt 0:00:00]} Bf5 {[%emt 0:00:00]} 9. Qb3 {[%emt 0:00:00]} Bxc3+ {
[%emt 0:00:01]} 10. Qxc3 {[%emt 0:00:00]} g5 {[%emt 0:00:02]} 11. Bg3 {[%emt 0:
00:00]} Ne4 {[%emt 0:00:00]} 12. Qa3 {[%emt 0:00:00]} Re8 {[%emt 0:00:01]} 13.
Bd3 {[%emt 0:00:01]} h5 {[%emt 0:00:02]} 14. Ne5 {[%emt 0:00:01]} Qe7 {[%emt 0:
00:05]} 15. Qxe7 {[%emt 0:00:03]} Rxe7 {[%emt 0:00:02]} 16. O-O-O {[%emt 0:00:
01]} f6 {[%emt 0:00:06]} 17. f3 {[%emt 0:00:02]} fxe5 {[%emt 0:00:02]} 18. fxe4
{[%emt 0:00:01]} Bxe4 {[%emt 0:00:01]} 19. Bxe4 {[%emt 0:00:01]} dxe4 {[%emt 0:
00:01]} 20. h4 {[%emt 0:00:00]} exd4 {[%emt 0:00:41]} 21. Rxd4 {[%emt 0:00:05]}
Nc6 {[%emt 0:01:14]} 22. Rd5 {[%emt 0:00:02]} Nb4 {[%emt 0:01:28]} 23. Rxg5+ {
[%emt 0:00:28]} Rg7 {[%emt 0:00:03]} 24. Kd2 {[%emt 0:00:51]} Rd8+ {[%emt 0:05:
27]} 25. Ke2 {[%emt 0:00:03]} Nd3 {[%emt 0:00:02]} 26. Bf4 {[%emt 0:01:34]} c6
{[%emt 0:02:30]} 27. g4 {[%emt 0:02:44]} Rxg5 {[%emt 0:01:16]} 28. hxg5 {
[%emt 0:00:26]} hxg4 {[%emt 0:00:03]} 29. Rg1 {[%emt 0:00:52]} Kg7 {[%emt 0:01:
57]} 30. Rxg4 {[%emt 0:00:10]} Kg6 {[%emt 0:00:32]} 31. Rh4 {[%emt 0:00:35]}
Kf5 {[%emt 0:00:02]} 32. Rh7 {[%emt 0:00:59]} Nxf4+ {[%emt 0:01:09]} 33. exf4 {
[%emt 0:00:00]} Kxf4 {[%emt 0:00:00]} 34. g6 {[%emt 0:00:31]} Kf5 {[%emt 0:02:
27]} 35. Rxb7 {[%emt 0:00:17]} Kxg6 {[%emt 0:00:03]} 36. Rxa7 {[%emt 0:00:33]}
Kf5 {[%emt 0:00:11]} 37. Rc7 {[%emt 0:00:46]} Ra8 {[%emt 0:01:21]} 38. Rxc6 {
[%emt 0:00:34]} Rxa2 {[%emt 0:00:03]} 39. Ke3 {[%emt 0:00:03]} Rxb2 {[%emt 0:
00:04]} 40. Rc5+ {[%emt 0:00:01]} Ke6 {[%emt 0:00:01]} 41. Kxe4 {[%emt 0:00:01]
} Rb4+ {[%emt 0:00:03]} 42. Kd3 {[%emt 0:00:01]} Kd6 {[%emt 0:00:01]} 43. Rc4 {
[%emt 0:00:01]} Rxc4 {[%emt 0:00:01]} 44. Kxc4 {[%emt 0:00:00]} 1/2-1/2

