[Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "5.1"] [White "Anton Guijarro, David"] [Black "Vachier-Lagrave, Maxime"] [Result "1/2-1/2"] [ECO "B51"] [WhiteElo "2675"] [BlackElo "2784"] [Annotator "TA"] [PlyCount "167"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,167,21,29,16,24,16,23,12,18,27,8,12,6,15,37,25,74,81,91,62,97,92,93, 55,60,54,66,55,51,46,68,28,84,78,83,82,72,72,81,44,80,68,90,80,108,106,106,99, 107,74,74,74,74,74,74,74,80,74,74,74,74,38,74,74,74,74,74,74,74,74,74,74,74,74, 74,67,67,67,74,67,74,74,74,74,74,74,74,74,74,74,74,74,74,74,74,74,74,74,74,74, 74,58,58,58,58,53,58,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53,53, 53,53,53,53,53,41,41,41,41,41,41,20,20,0,0,0,0,0,14,14,14,14,14,14,14,14,14,14, 14,0,14,0,14,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c3 Ngf6 5. Bd3 g6 6. O-O { B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} Bg7 7. Re1 O-O 8. Bf1 {White has an edge.} e5 9. d4 exd4 10. cxd4 cxd4 11. Nxd4 Nc5 12. Nc3 Re8 { [%CAl Rc5e4] [#]} 13. f3 $146 ({Predecessor:} 13. Bg5 h6 14. Bxf6 Bxf6 15. Ndb5 Be5 16. Nd5 Ne6 17. Rc1 Rf8 18. Qd2 g5 19. g3 {1-0 (31) Colandrea,S (1886) -Ninov,N (2546) Pierrevert 2007}) 13... a6 14. Bg5 h6 15. Bh4 b5 16. a3 Bb7 17. Rc1 Rc8 18. Bf2 Ncd7 19. Qd2 Ne5 20. Rcd1 Re7 (20... Qc7 $11 {remains equal.}) 21. Nc2 $16 Rd7 {White should prevent ...d5.} 22. Nb4 Nc4 23. Bxc4 Rxc4 24. Qe2 Qe8 25. Rd2 Qe6 26. Red1 Rc8 27. Bd4 Re8 28. Qf2 h5 29. Nbd5 (29. Rd3 {looks sharper.} Rc8 30. h3 Kh7 31. Qd2 Qe7 32. Qe3) 29... Nxd5 30. Bxg7 ({But not} 30. Nxd5 Bxd5 31. exd5 Qf5 $11) 30... Kxg7 31. Nxd5 Bxd5 32. Rxd5 Qf6 33. Qd4 Qxd4+ 34. R5xd4 {[%mdl 4096] Endgame KRR-KRR} Rc8 35. h4 Rc2 36. Rxd6 Rxd6 37. Rxd6 {Hoping for b4. KR-KR} a5 38. b3 Rc3 39. Ra6 Rxb3 40. Rxa5 b4 41. axb4 Rxb4 42. Kf2 Rb2+ 43. Kg3 Rc2 44. Ra1 Rb2 45. Rf1 Kf6 46. Rf2 Rb1 {[#]} 47. Kf4 $1 Ra1 48. Rb2 Ra6 49. Rb5 Ra2 50. Rb6+ Kg7 51. g3 Rf2 52. Rb7 Rf1 53. Re7 Kf6 54. Ra7 (54. Rc7 {feels hotter.} Ke6 55. Rc5 Rb1 56. Rd5 Kf6 57. Rd3) 54... Kg7 55. e5 Re1 56. Ra4 Rb1 57. Re4 Rb3 58. e6 fxe6 59. Rxe6 Rb4+ 60. Re4 Rb3 61. Rd4 (61. Re8 {is more complex.} Rb4+ 62. Ke3 Rb3+ 63. Kf2 Kf6 64. Re2) 61... Rb5 62. Ke4 Kf6 63. Rd6+ Kg7 64. Rd5 Rb3 65. Kf4 Kh6 66. Rd6 Rb4+ 67. Ke5 Rb3 68. Ke4 Rb4+ 69. Rd4 Rb7 70. f4 Re7+ 71. Kf3 Kg7 72. Rd5 Ra7 73. f5 gxf5 { The position is equal.} 74. Kf4 Ra4+ 75. Kxf5 Rg4 76. Rd7+ Kg8 77. Rd3 Kg7 78. Rc3 $1 Kg8 79. Kf6 Kh7 80. Re3 Rg6+ 81. Kf5 Rg4 82. Kf6 Rg6+ 83. Kf5 Rg4 84. Kf6 {Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "5.2"] [White "Carlsen, Magnus"] [Black "Dubov, Daniil"] [Result "1-0"] [ECO "B31"] [WhiteElo "2862"] [BlackElo "2699"] [Annotator "Shahid"] [PlyCount "115"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,115,8,22,17,15,0,0,0,16,0,12,21,53,39,47,20,27,22,20,28,29,26,24,0, 28,0,0,0,0,0,0,0,0,0,4,3,7,0,0,0,0,0,13,10,25,20,28,10,31,33,28,32,31,28,35,28, 26,21,39,42,42,38,50,54,54,22,37,15,15,0,0,0,0,0,4,0,117,123,138,134,132,136, 133,122,209,198,1794,1554,1724,1693,1583,1587,1788,1740,1558,1366,12835,999, 5816,1585]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Bxc6 bxc6 6. Re1 Nh6 7. c3 O-O 8. d4 cxd4 9. cxd4 d5 10. e5 {B31: Sicilian: 2...Nc6 3 Bb5 g6.} f6 11. h3 {11.e6 is setting a new trend.} fxe5 {aiming for ...e4.} 12. dxe5 $5 { [%mdl 4] [#] The position is equal. Exploring less charted territory.} c5 $146 ({Predecessor:} 12... Nf7 13. Nc3 Be6 14. Na4 Bf5 15. Nc5 Qb6 16. Qd4 Nd6 17. Bg5 Nb5 18. Qe3 Rae8 {1/2-1/2 (51) Garifullina,L (2132)-Buksa,N (2410) St Petersburg 2018}) 13. b4 cxb4 14. a3 d4 15. axb4 Bb7 16. Nbd2 a5 17. Rxa5 Rxa5 18. bxa5 Qxa5 19. Nxd4 Nf5 20. N4f3 Qd5 21. Bb2 Bh6 22. e6 Rd8 {[%CAl Rh6d2]} 23. Qe2 Qd3 24. Qxd3 Rxd3 25. Ne4 Bxe4 26. Rxe4 Bg7 27. Be5 (27. Bxg7 {is more complex.} Kxg7 28. Rf4 Rd5 29. Kh2 Nd6 30. h4) 27... Bxe5 28. Nxe5 $11 { [%mdl 4096] Endgame KRN-KRN} Rd1+ 29. Kh2 Kg7 30. g4 Nd6 31. Re3 g5 32. Kg2 h6 33. Nc6 Kf6 34. Rf3+ Kxe6 35. Re3+ Kf6 36. Nxe7 Nc4 37. Re4 {Ng8+ is the strong threat.} Nd6 38. Re2 Rd3 39. Nc6 Nf7 40. Re3 Rd7 41. Ra3 Nh8 42. Nb8 Rb7 43. Ra6+ Kg7 $1 44. Nc6 {Strongly threatening Nd4.} Ng6 45. Nd4 {next Nf5+ is good for White.} Nh4+ 46. Kg3 Rb1 (46... Rb4 $11 47. Nc2 Rc4 48. Ra7+ Kg8) 47. f4 $16 {Hoping for Ne6+.} Rg1+ 48. Kf2 Rg2+ 49. Kf1 {Threatens to win with Nf5+.} Rd2 50. Ne6+ Kf7 $4 (50... Kh8 $1 51. f5 (51. fxg5 Nf3 $16) 51... Nf3) 51. fxg5 $18 Nf3 $2 (51... hxg5 52. Nxg5+ Kg7) 52. g6+ $1 {White is clearly winning.} ({Worse is} 52. gxh6 Nh2+ 53. Kg1 Nf3+ 54. Kf1 Nh2+ 55. Kg1 Nf3+ 56. Kf1 $11) 52... Ke7 {[#]} 53. Ra3 $1 Nh2+ 54. Ke1 Rd6 55. Nf4 Kf6 56. Ke2 Rd7 57. Ra6+ Ke5 58. Nh5 {Weighted Error Value: White=0.05/Black=0.13} (58. Ne6 $142 Rb7 59. g7) 1-0 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "5.3"] [White "Giri, Anish"] [Black "Harikrishna, Pentala"] [Result "1-0"] [ECO "D47"] [WhiteElo "2764"] [BlackElo "2732"] [Annotator "TA"] [PlyCount "79"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,79,5,14,15,13,17,16,12,44,36,60,47,37,9,33,-16,0,-6,31,32,22,33,45,0, 0,0,21,27,255,260,250,247,485,451,478,289,342,354,376,380,535,521,563,549,503, 322,304,290,290,262,294,298,310,292,287,307,304,297,315,313,348,346,348,341, 392,385]} 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bd6 9. Qc2 {D47: Semi-Slav: Meran System.} Bb7 10. e4 {e5 is the strong threat.} e5 11. Bg5 {The position is equal.} Qc7 12. O-O-O {[#]} a6 $146 ({Predecessor:} 12... b4 13. Na4 O-O 14. dxe5 Nxe5 15. Bxf6 gxf6 16. Nxe5 fxe5 17. Nc5 Bc8 18. Kb1 Rb8 {1-0 (41) Di Benedetto,E (2324)-Alok,S (2187) Montebelluna 2018}) 13. Kb1 O-O-O 14. Rhf1 h6 15. Bh4 g5 {Threatens to win with ...exd4.} 16. Bg3 c5 (16... exd4 {keeps more tension.} 17. Nxd4 Bxg3 18. hxg3 Nc5 19. Nf5 Kb8) 17. dxe5 Nxe5 18. Bxb5 axb5 {[#]} 19. Rxd6 $1 Qxd6 20. Bxe5 Qe6 21. Ka1 Qc4 {A mistake that costs the game.} (21... Qa6) 22. Rc1 $18 Bxe4 {[#]} 23. b3 $1 {[%mdl 512]} Qb4 {[#]} (23... Bxc2 24. bxc4 g4) (23... g4 24. bxc4) 24. Qb2 $1 (24. Nxe4 Nxe4 25. Kb2 (25. Bxh8 Rxh8 26. Kb2 Re8 $14) 25... f5 $16) 24... Bxf3 25. Bxf6 Bxg2 26. Bxh8 Kb7 27. Be5 Bf3 (27... Bc6 $142 28. Qc2 c4 29. bxc4 Qxc4) 28. Qc2 Rd7 29. Qf5 Bc6 30. Nb1 Qe4 31. Qxe4 Bxe4 32. Nc3 ({Less strong is} 32. Rxc5 Rd1 $16) 32... Bd3 33. Bg7 h5 34. Bf6 g4 35. Re1 Kc6 36. Re7 Rxe7 37. Bxe7 f5 38. Kb2 f4 39. a3 Bf5 40. Ne2 {Weighted Error Value: White=0.18/Black=0.46} 1-0 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "5.4"] [White "Grischuk, Alexander"] [Black "Radjabov, Teimour"] [Result "1/2-1/2"] [ECO "D37"] [WhiteElo "2777"] [BlackElo "2765"] [Annotator "TA"] [PlyCount "91"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,91,25,29,0,0,-17,13,-25,20,22,36,23,22,22,41,0,0,0,0,-41,0,0,56,17,35, 4,5,5,5,7,0,0,0,0,0,0,0,0,0,0,0,4,8,0,0,-179,-169,-174,0,0,0,0,0,0,0,-4,-4,-6, 0,-7,0,-6,-6,-6,0,0,0,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,0,-6,0,-6,0,-6]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. a3 {D37: Queen's Gambit Declined: 5 Bf4.} b6 7. Qc2 $1 {[%mdl 4] is currently scoring better than 7.e3. } Bb7 8. Rd1 Nbd7 9. cxd5 exd5 10. e3 c5 11. Bd3 a6 12. a4 Re8 13. O-O g6 14. Ne5 Rc8 {[#]} 15. Qe2 $146 ({Predecessor:} 15. Be2 cxd4 16. exd4 Nf8 17. Bf3 Ne6 18. Be3 Bd6 19. Rfe1 Bf8 20. Qb3 Qd6 21. g3 {1/2-1/2 (41) Dreev,A (2670) -Razuvaev,Y (2585) Reggio Emilia 1996}) 15... c4 ({Black should try} 15... Nh5 $11 16. Bh6 (16. Bxa6 Bxa6 17. Qxa6 cxd4 $11) 16... cxd4 17. exd4 Nxe5 18. dxe5 Bg5 19. Bxg5 Qxg5) 16. Bb1 Nh5 17. Bh6 Nxe5 $1 18. dxe5 {White wants to play Be4!} Bc5 $1 19. f4 d4 $1 {[%CAl Rd4d3] Hoping for ...d3.} 20. exd4 ({Don't go for} 20. Qxc4 $2 dxc3 21. Rxd8 Bxe3+ 22. Kh1 Rexd8 $19) 20... Bxd4+ 21. Kh1 { [#] aiming for Be4.} Qh4 $1 {[%csl Gh4][%CAl Rh5g3]} 22. Qe1 {[%CAl Re1h4]} Qxe1 23. Rfxe1 Rcd8 24. Bg5 f6 25. exf6 {[#] f7+! is the strong threat.} Nxf6 ( {Don't play} 25... Bxf6 $6 26. Rxe8+ Rxe8 27. Ba2 $16) 26. Rxe8+ Rxe8 27. h3 $2 (27. Ba2 $11 {and White stays safe.}) 27... Bxc3 $19 28. bxc3 Ne4 ({Black should play} 28... Nd5 $19 29. f5 Nxc3 $19) 29. Bxe4 $11 {The position is equal.} Bxe4 {[%mdl 4096] Endgame KRB-KRB} 30. Rd6 b5 31. axb5 axb5 32. Rb6 Ra8 33. Re6 Bd5 (33... Bd3 {seems wilder.} 34. Rb6 Ra1+ 35. Kh2 Ra2 36. Rb8+ Kf7) 34. Rd6 Be4 35. Rd8+ Rxd8 36. Bxd8 {KB-KB} h5 37. Ba5 Kf7 38. Kg1 Ke6 39. Kf2 Kf5 40. g3 Bc6 41. Ke3 Bg2 42. h4 Ke6 43. Bb4 Kf5 44. Ba5 Ke6 45. Bb4 Kf5 46. Ba5 {Weighted Error Value: White=0.13/Black=0.11} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "5.5"] [White "Nakamura, Hikaru"] [Black "So, Wesley"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2736"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "47"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 27,28,0,19]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. dxe5 Nxb5 7. a4 Nbd4 8. Nxd4 Nxd4 9. Qxd4 d5 10. exd6 Qxd6 11. Qe4+ Qe6 12. Qd4 Qd6 13. Qe4+ Qe6 14. Qd4 Qd6 {[#] Predecessor:} 15. Qe3+ $146 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} Be6 16. Nc3 Qc6 17. Nb5 Bc5 18. Qc3 O-O 19. Bf4 Rfc8 20. Nd4 Bxd4 21. Qxd4 Rd8 22. Qb4 a5 23. Qb5 Qxb5 24. axb5 {1/2-1/2 (32) Wei,Y (2732)-Grischuk,A (2777) Chess.com INT 2020} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "5.6"] [White "Nepomniachtchi, Ian"] [Black "Aronian, Levon"] [Result "1/2-1/2"] [ECO "C45"] [WhiteElo "2784"] [BlackElo "2781"] [Annotator "TA"] [PlyCount "102"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,102,0,-4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,12,30,31,30,27,33,30, 33,33,29,31,39,22,37,32,26,26,27,13,13,13,13,13,13,0,0,0,7,0,0,4,22,22,22,22, 22,22,30,30,30,12,12,12,17,17,17,0,0,0,0,0,44,44,44,44,44,44,44,44,44,8,8,8,73, 8,8,-8,-8]} 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. h4 d6 {C45: Scotch Game.} (8... f6 9. c4 Ba6 10. Rh3 fxe5 11. Bg5 Nf6 12. Re3 d6 13. Qf3 Qd7 14. Nc3 Be7 15. Bd3 O-O 16. Bf5 Qe8 17. Be6+ Kh8 18. Qh3 Bc8 19. O-O-O Bxe6 20. Qxe6 h6 21. f4 exf4 {0-1 (30) Nepomniachtchi,I (2784)-Aronian,L (2781) Chess.com INT 2020}) 9. c4 Nb6 10. exd6 cxd6 $1 { 10...cxd6 is better than 10...Qxe2+.} 11. Nc3 Be6 12. b3 $1 d5 13. cxd5 Nxd5 14. Bb2 Qb4 {[#]} 15. Qc4 $146 ({Predecessor:} 15. Qa6 Rc8 16. Rc1 Bc5 17. Bc4 O-O 18. O-O Qb8 19. Bxd5 cxd5 20. Ne2 Bg4 21. Nd4 {1-0 (46) Tukhaev,A (2516) -Rajesh,V (2351) Mumbai 2017}) 15... Qxc4 16. Bxc4 Bb4 17. Bxd5 Bxd5 18. O-O-O Bxc3 19. Bxc3 f6 20. Rd4 Kf7 21. f3 Rhe8 22. Re1 h5 23. Ra4 a6 24. Kd2 Red8 25. Ke3 Be6 26. Rc1 Rd5 27. Bd4 Rad8 28. Rc5 Rxc5 29. Bxc5 $11 {[%mdl 4096] Endgame KRB-KRB} Rd5 30. Bd4 (30. Bb6 {with more complications.} Bc8 31. Rc4 Bd7 32. Bc7 g5 33. Ra4) 30... c5 31. Bb2 Rd6 32. Ba3 Rc6 33. Kd3 Bd7 {[#] Strongly threatening ...Rd6+.} 34. Ra5 Rd6+ 35. Kc3 Bb5 36. Bxc5 Rd5 37. Bd4 { [#] a4 is the strong threat.} Ke6 38. b4 g5 39. a4 Bf1 40. Rxd5 Kxd5 {KB-KB} 41. g4 hxg4 42. h5 {Hoping for h6.} ({Not} 42. fxg4 $2 gxh4 43. Bg1 Ke4 $19) 42... Ke6 $1 ({Don't blunder} 42... gxf3 $2 43. h6 $18) 43. fxg4 Be2 44. h6 Kf7 45. h7 Kg7 46. Bxf6+ Kxh7 47. Bxg5 Bxg4 48. b5 axb5 49. axb5 Bf3 (49... Kg6 $11 {keeps the balance.}) 50. b6 ({Better is} 50. Kd4 $16) 50... Kg6 51. b7 Bxb7 { Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "6.1"] [White "Vachier-Lagrave, Maxime"] [Black "Aronian, Levon"] [Result "1/2-1/2"] [ECO "A18"] [WhiteElo "2784"] [BlackElo "2781"] [Annotator "Shahid"] [PlyCount "113"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,113,34,20,30,14,24,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,15,19,-4,0,-2,0, -7,0,0,0,0,0,0,-6,0,0,0,0,-7,-13,-23,-41,-41,0,0,0,19,14,0,316,278,175,21,18,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0]} 1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 d4 5. exf6 dxc3 6. bxc3 Qxf6 7. Nf3 Nc6 {7...b6 is a critical line. A18: English Opening: Flohr-Mikenas System (1 c4 Nf6 2 Nc3 e6 3 e4).} 8. d4 e5 9. Bg5 Qg6 {...e4 is the strong threat.} 10. d5 Nb8 11. h4 h6 12. h5 Qa6 13. Be3 Nd7 14. Bd3 Ba3 15. O-O Qd6 16. Nh4 O-O 17. Nf5 Qf6 {[#]} 18. Bc2 $146 ({Predecessor:} 18. Ng3 Qh4 { 1/2-1/2 (20) Anand,V (2782)-Karjakin,S (2760) London 2017}) 18... Re8 19. g4 Bc5 20. Qf3 $1 e4 21. Bxe4 Ne5 22. Qf4 Bxe3 23. fxe3 Qg5 24. Qxg5 hxg5 25. d6 Bxf5 26. Rxf5 c6 27. c5 Nxg4 28. Bf3 Nh6 (28... Ne5 $15 29. Rf1 f6) 29. Rxg5 $11 {And now Kf2 would win.} Rxe3 30. Kf2 Rxc3 31. Rb1 b6 $4 {[%mdl 8192]} ( 31... f6 $11 32. Rg2 Rxc5) 32. Bxc6 $18 (32. Re1 f6 33. d7 Kf7 34. Bxc6 Rd8 35. Rg2 Rxc5 36. Re8 $18) 32... Rd8 {[#]} 33. d7 $2 (33. Re1 $1 $18 {Strongly threatening d7.} f6 34. Re8+ (34. Bd5+ $2 Kf8 $19) 34... Rxe8 35. Bxe8 bxc5 { [#]} 36. Bg6 $1) 33... f6 $1 $11 {[%CAl Rf6g5] The position is equal.} 34. Re1 {aiming for Re8+.} Rc2+ 35. Kf1 {Hoping for Re8+.} Rxd7 $1 36. Bxd7 fxg5 { [%mdl 4096] Endgame KRB-KRN} 37. c6 Kf7 38. Re3 g4 39. Ra3 a5 40. Rb3 Ke7 41. a3 Kd6 (41... Rc5 {with more complications.} 42. Rxb6 Rxh5 43. Rb7 Rc5 44. Bxg4+ Kd6) 42. Rxb6 Nf7 (42... Rc5 {is interesting.} 43. Rb7 Rxh5 44. Be8 Rh3 45. Rxg7 Nf5) 43. Bxg4 Rxc6 44. Rb7 Rc7 45. Rb3 Ne5 46. Be2 g6 47. Rb6+ Kc5 48. Rb5+ Kd4 49. hxg6 (49. h6 {seems wilder.} Rh7 50. Rxa5 Rxh6 51. Kg2 g5 52. Rb5) 49... Nxg6 50. Rxa5 Nf4 51. Bg4 (51. a4 {feels hotter.} Rc1+ 52. Kf2 Nxe2) 51... Rc2 52. Ra8 Ra2 53. Rd8+ Ke3 54. Re8+ Kd4 55. Rd8+ Ke3 56. Re8+ Kd4 57. Rd8+ {Weighted Error Value: White=0.07/Black=0.14} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "6.2"] [White "So, Wesley"] [Black "Nepomniachtchi, Ian"] [Result "1/2-1/2"] [ECO "D85"] [WhiteElo "2770"] [BlackElo "2784"] [Annotator "TA"] [PlyCount "49"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 23,49,8,32,26,22,20,20,0,0,0,3,0,0,0,0,0,0,0,0,-17,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 O-O 9. Be2 cxd4 10. cxd4 Qa5+ 11. Bd2 Qxa2 12. O-O Bg4 13. Rxb7 {13.Be3 is the modern continuation. D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3.} (13. Be3 Nc6 14. d5 Na5 15. Bg5 Qa3 16. Re1 Bxf3 17. Bxf3 Qd6 18. e5 Bxe5 19. Qe2 Bf6 20. Bd2 Qd8 21. d6 Nc6 22. dxe7 Qxe7 23. Qxe7 Nxe7 {1/2-1/2 (23) So,W (2760)-Nepomniachtchi,I (2767) Jerusalem 2019}) 13... Bxf3 14. Bxf3 {[#] aiming for e5.The position is equal.} Bxd4 15. e5 Na6 {[%CAl Bb8a6,Ba6c5,Bc5d3,Bd3e1][%mdl 32]} 16. Rxe7 Rad8 {Hoping for ...Bc5.} 17. e6 fxe6 {[#] White must now prevent ...Bc5.} 18. Qe1 {[#]} Nc5 $146 ({Predecessor: } 18... Bf6 19. Rxa7 Rxd2 20. Rxa6 Qxa6 21. Qxd2 Qb6 22. g3 Bd4 23. Kg2 Rxf3 24. Kxf3 Qb7+ 25. Ke2 Qe4+ 26. Kd1 Qb1+ 27. Ke2 Qe4+ 28. Kd1 Qb1+ 29. Ke2 Qe4+ {1/2-1/2 (29) So,W (2770)-Vachier Lagrave,M (2784) chess24.com INT 2020}) 19. Be3 {Threatens to win with Bxd4.} Nd3 20. Bxd4 Nxe1 21. Rg7+ Kh8 22. Rd7+ Kg8 ( {Don't go for} 22... e5 $2 23. Bxe5+ Rf6 24. Bxf6+ Kg8 25. Rxd8+ $18) 23. Rg7+ Kh8 24. Rd7+ Kg8 ({Don't blunder} 24... e5 $2 25. Bxe5+ Rf6 26. Bxf6+ Kg8 27. Rxd8+ $18) 25. Rg7+ {A rather calm draw. Weighted Error Value: White=0.02/ Black=0.02} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "6.3"] [White "Radjabov, Teimour"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "D37"] [WhiteElo "2765"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "38"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,38,15,17,10,14,19,31,16,21,27,14,27,18,17,17,20,14,21,21,21,28,27,28, 0,30,0,25,0,7]} 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 is slightly better.} exd5 10. dxc5 Nxc5 11. Be5 Bf5 12. Be2 Bf6 13. Bxf6 Qxf6 14. Qd4 $1 {[%mdl 4] is recently more successful than 14.Nd4.} Qd6 {With the idea . ..Nb3.} 15. Rd1 Rfd8 {Black wants to play ...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 {An uneventful encounter. Weighted Error Value: White=0.06/Black=0.00} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "6.4"] [White "Harikrishna, Pentala"] [Black "Grischuk, Alexander"] [Result "1/2-1/2"] [ECO "B53"] [WhiteElo "2732"] [BlackElo "2777"] [Annotator "Shahid"] [PlyCount "112"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,112,18,18,18,18,18,18,18,18,3,12,4,3,10,12,12,42,30,29,44,64,49,106, 114,100,25,40,7,30,39,81,52,93,88,87,95,72,75,70,78,81,81,79,75,76,39,52,57,60, 62,69,44,46,48,62,32,75,50,76,40,47,27,37,23,59,50,66,53,64,39,39,31,33,43,45, 13,21,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-20,-10,-10,-10,-10,-10,-20,-20,-20,0,-20,0, -20,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nf6 5. Be2 Nc6 6. Qe3 {B53: Sicilian: 2...d6: Lines with Qxd4.} g6 7. O-O Bg7 8. Rd1 O-O 9. h3 Nd7 10. Nc3 b6 11. Rb1 Bb7 12. Nd5 {[#]} a6 $146 ({Predecessor:} 12... Rc8 13. c4 e6 14. Nc3 Qe7 15. b3 Rfd8 16. Bb2 Nc5 17. Nb5 Bxb2 18. Rxb2 a6 {1/2-1/2 (27) Harikrishna,P (2732)-Nepomniachtchi,I (2784) Lichess.org INT 2020}) 13. c4 Re8 14. b3 e6 15. Nc3 Qb8 (15... Nce5 $14) 16. Ba3 $16 Bf8 17. Qd2 (17. Rb2 $16) 17... Nc5 $11 18. Bf1 Rd8 19. Qe3 Nd7 20. Rbc1 Nce5 21. Nxe5 dxe5 22. Bxf8 Kxf8 23. Rd2 (23. b4) (23. h4) 23... Qc7 24. Rcd1 Nc5 25. b4 Rxd2 26. Rxd2 Nd7 27. Qd3 Ke7 28. Qg3 Nf6 29. Qg5 Rh8 30. a3 h6 31. Qe3 g5 32. f3 Rb8 33. Kf2 Nd7 34. Na4 Bc6 35. b5 axb5 36. cxb5 {[#] aiming for Qc3.} Ba8 37. Qb3 Nf6 38. Rc2 (38. Be2 {keeps more tension.} Rd8 39. Rc2 Qd6 40. Nb2 Nd7 41. Nc4) 38... Qd6 39. Qb4 (39. Ke1 {is more complex.} Rd8 40. Nb2 Qd4 41. Qb4+ Qxb4+ 42. axb4 Nd7 43. Rc7) 39... Qxb4 40. axb4 Ne8 41. Bd3 Kd7 42. Rc1 Nd6 {The position is equal.} 43. Nb2 (43. h4 {keeps more tension.} g4 44. h5 Kd8 45. Re1 gxf3 46. gxf3 Bb7 47. Rc1) 43... Bb7 44. Ra1 Ra8 45. Rxa8 Bxa8 {[%mdl 4096] Endgame KBN-KBN} 46. g4 Bb7 47. Nc4 Nxc4 48. Bxc4 {KB-KB} Ke7 49. Bd3 Bc8 50. Ke3 Kf6 51. Kf2 Kg6 52. Kg3 h5 53. Kf2 Bd7 54. Kg3 Bc8 55. Kf2 Bd7 56. Kg3 Bc8 {Weighted Error Value: White=0.10/ Black=0.09} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "6.5"] [White "Dubov, Daniil"] [Black "Giri, Anish"] [Result "1-0"] [ECO "C67"] [WhiteElo "2699"] [BlackElo "2764"] [Annotator "Shahid"] [PlyCount "83"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,83,-4,0,6,4,0,0,0,0,0,3,5,0,0,-7,0,12,18,16,18,14,28,24,23,31,64,64, 79,79,79,79,120,123,376,311,312,404,397,398,397,398,406,387,415,427,427,426, 426,426,426,417,417,417,383,379,541,541,541,357,541,539,528,513,727,692,5787, 5556,6091,6091,6070,5556,5546,5543]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. dxe5 Nxb5 7. a4 Nbd4 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 8. Nxd4 d5 9. c3 $5 {[%mdl 4] An interesting side line.} Be7 {The position is equal.} 10. f4 {[#]} O-O $146 ({Predecessor:} 10... f6 11. exf6 Bxf6 12. Nxc6 bxc6 13. Re1+ Kf7 14. Be3 Re8 15. Na3 Bf5 16. Nc2 Qd7 {1/2-1/2 (49) Hrebenshchykova,Y (2029)-Doluhanova,E (2293) Lutsk 2019}) 11. Be3 f6 12. Nxc6 bxc6 13. Nd2 Ba6 14. Rf3 fxe5 15. fxe5 Qd7 16. Nb3 Rxf3 17. Qxf3 Rf8 18. Qg3 Qf5 {( -> ...Qf1+!)} 19. h3 Qc2 $2 {[#]} (19... Qd3) 20. Bc5 $1 Qxb3 21. Bxe7 Rf7 22. Bc5 $40 {[%mdl 128] Black is in trouble.} Bc8 {[%mdl 8192] Black cannot hold the game after this.} ({Avoid the trap} 22... Qxb2 $2 23. Re1 $18) (22... Qc4 $16 23. Bxa7 Qf4) 23. Qg5 {White wants to mate with Qd8+.} h5 24. Qd8+ {[%mdl 64] [#] Double Attack} Kh7 25. Qxc8 Qxb2 26. Rf1 Rxf1+ 27. Kxf1 Qc1+ 28. Kf2 Qd2+ 29. Kg1 Qe1+ 30. Kh2 {Strongly threatening Qf5+.} Qxe5+ 31. Kh1 Qxc3 32. Qf5+ Kg8 33. Bg1 a5 (33... Qc4 {might work better.} 34. Qe6+ Kh7 35. Qf5+ Kg8 36. Qe6+ Kh7) 34. Qxh5 $18 Qc4 35. Qe8+ Kh7 36. Qe5 {White is clearly winning.} c5 37. Qxc7 d4 38. Qxa5 Qc1 {intending ...d3.} 39. Qd8 Qc3 40. a5 {[%CAl Ba4a5,Ba5a6,Ba6a7][%mdl 32]} d3 41. a6 {White threatens a7 and mate.} d2 42. a7 {Weighted Error Value: White=0.03/Black=0.24} 1-0 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "6.6"] [White "Anton Guijarro, David"] [Black "Carlsen, Magnus"] [Result "1/2-1/2"] [ECO "E51"] [WhiteElo "2675"] [BlackElo "2862"] [Annotator "TA"] [PlyCount "101"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,101,0,0,-11,13,15,6,8,17,7,18,0,0,-3,28,20,13,13,19,19,33,44,56,28, 22,25,29,6,1,0,9,12,9,0,0,0,0,-6,0,-10,0,0,0,-8,0,0,0,-4,-4,-5,-6,-8,16,15,15, 15,16,18,15,11,15,14,16,2,4,0,0,0,4,4,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,0,0,0,-4, 0,-8]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd2 d5 6. Nf3 b6 7. cxd5 exd5 8. Bd3 {E51: Nimzo-Indian: Rubinstein: 4...0-0 5 Nf3 d5.} Ba6 9. Bxa6 Nxa6 10. O-O Re8 11. Rc1 Bf8 12. Ne2 Qc8 {[#]} 13. Qc2 $146 ({Predecessor:} 13. Qa4 c5 14. Ng3 Qb7 15. dxc5 Nxc5 16. Qb5 Rac8 17. Rfd1 a6 18. Qf1 Nfe4 19. Be1 { 1/2-1/2 (30) Aronian,L (2767)-Carlsen,M (2863) Stavanger 2020}) 13... c5 14. dxc5 bxc5 15. Bc3 Ne4 16. Rfd1 Qb7 17. Nf4 Rad8 18. Qa4 Nxc3 19. bxc3 Nc7 $1 20. Rb1 Qa8 {The position is equal.} 21. c4 d4 22. exd4 cxd4 23. h3 (23. Rxd4 $2 Rxd4 24. Nxd4 Qe4 $19) 23... Ne6 24. Nxe6 Rxe6 25. Qc2 Rg6 {And now ...Qxf3 would win.} 26. Qf5 {next Ng5 is good for White.} h6 27. Rb5 Rf6 28. Qd3 Ra6 29. Rd2 Ra3 30. Qf5 Qc8 31. Qxc8 ({Not} 31. Nxd4 $2 Qxc4 32. Qg4 {[#]} Rxd4 $1 $19 {[%mdl 512]}) ({Wrong is} 31. Rxd4 $2 Qxf5 32. Rxf5 Rxf3 $1 $19 {[%mdl 512] }) 31... Rxc8 32. Nxd4 Rxc4 33. Rb8 {Hoping for Nf5.} Rac3 34. Nb5 Rc1+ 35. Kh2 {Black must now prevent Rdd8.} Rc8 {[%CAl Rc8b8]} 36. Rxc8 Rxc8 37. Nxa7 $11 { [%mdl 4096] Endgame KRB-KRN} Rc5 38. g4 h5 39. Kg2 hxg4 40. hxg4 g6 41. Rb2 Rc4 42. f3 Ba3 43. Re2 Rc5 44. Kg3 Kg7 45. Kf4 Kf6 46. Ke4 Kg5 47. Rg2 Rc4+ 48. Kd5 Rc5+ 49. Ke4 Rc4+ 50. Kd5 Rc5+ 51. Ke4 {Weighted Error Value: White=0.04/ Black=0.04} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "7.1"] [White "Carlsen, Magnus"] [Black "Vachier-Lagrave, Maxime"] [Result "1/2-1/2"] [ECO "A16"] [WhiteElo "2862"] [BlackElo "2784"] [Annotator "TA"] [PlyCount "82"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,82,31,43,12,19,11,12,18,14,12,24,18,10,11,14,16,42,22,22,21,22,22,39, 28,30,28,32,27,40,40,44,40,40,33,47,39,47,47,47,47,58,59,62,62,62,28,28,20,62, 62,62,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,0,28,0,28,0,28]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. h4 Nxc3 6. dxc3 {A16: English Opening: 1...Nf6 with ...d5.} (6. bxc3 {looks sharper.} Bg7 7. e3 Nc6 8. h5 Qd5 9. Qa4) 6... Qxd1+ 7. Kxd1 f6 8. h5 g5 9. e4 e5 {[#]} 10. Nh2 $146 ({ Predecessor:} 10. Be3 Nd7 11. Bc4 Nc5 12. Nd2 Bd7 13. Kc2 b5 14. Be2 a5 15. g4 Bd6 16. f3 {1/2-1/2 (28) Nisipeanu,L (2673)-Sutovsky,E (2689) Austria 2018}) 10... Be6 11. Be2 Nd7 {[%CAl Bb8d7,Bd7c5,Bc5a4][%mdl 32]} 12. Bg4 Kf7 13. Ke2 ( 13. Kc2) 13... Nc5 14. Bxe6+ Kxe6 15. f3 Na4 16. Rb1 Be7 17. Bd2 Rhd8 18. Rhd1 Nb6 19. Ng4 Rd7 20. Be3 Rxd1 21. Rxd1 Nc8 22. Nh6 b6 23. Nf5 Nd6 24. g4 Nxf5 25. exf5+ $14 {[%mdl 4096] Endgame KRB-KRB} Kf7 26. Rd7 Rc8 27. b4 Ke8 28. Rd1 (28. Rd2 {seems wilder.} c5 29. b5 c4 30. a4 Rd8 31. Ra2) 28... Rd8 29. Rxd8+ Kxd8 {KB-KB} 30. b5 Kd7 31. Kd3 c6 32. Kc4 Kc7 33. a4 Kb7 34. Kd3 h6 35. Ke4 Kc7 36. c4 Bb4 37. Kd3 Kd7 38. Kc2 Kd6 39. Kd3 Kd7 40. Kc2 Kd6 41. Kd3 Kd7 { Weighted Error Value: White=0.06/Black=0.05} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "7.2"] [White "Giri, Anish"] [Black "Anton Guijarro, David"] [Result "1/2-1/2"] [ECO "E04"] [WhiteElo "2764"] [BlackElo "2675"] [Annotator "TA"] [PlyCount "114"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,114,25,30,29,19,18,18,-3,26,32,12,20,34,26,37,22,11,12,12,12,12,12,12, 0,14,9,9,9,6,5,5,3,44,6,7,6,14,8,8,8,8,8,6,8,2,3,8,0,0,0,8,8,14,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c6 6. a4 { E04: Open Catalan: 5 Nf3.} Bb4+ 7. Bd2 a5 8. Qc2 O-O (8... Be7 {looks sharper.} 9. Qxc4 b6 10. Nc3 Ba6 11. Qb3 Nbd7) 9. Bxb4 axb4 10. Qxc4 Qa5 11. Qc2 b5 { [%CAl Rb5a4]} 12. b3 Bb7 {[#]} 13. O-O $146 ({Predecessor:} 13. Nbd2 Nbd7 14. Ne5 Nxe5 15. dxe5 Nd5 16. O-O Nc3 17. Ne4 bxa4 18. Nxc3 bxc3 19. Rxa4 Qxe5 { 1/2-1/2 (39) Cheparinov,I (2688)-Anton Guijarro,D (2675) Los Cancajos 2020}) 13... Nbd7 14. Nbd2 Qb6 15. Rfc1 Rfc8 16. Qb2 c5 17. axb5 Rxa1 18. Rxa1 { With the idea Nc4.} Qxb5 19. Nc4 {[#] aiming for Nd6.} Ra8 $1 20. dxc5 Qxc5 ( 20... Nxc5 {is interesting.} 21. Nfe5 Bxg2 22. Kxg2 Qb8 23. f3 Rxa1 24. Qxa1 Nxb3 25. Qd1 Nc5) 21. Nfe5 (21. Ne1 {seems wilder.} Rxa1 22. Qxa1 Bxg2 23. Kxg2 Qc6+ 24. f3) 21... Nxe5 {The position is equal.} 22. Rxa8+ Bxa8 23. Qxe5 Qxe5 24. Nxe5 Be4 25. Bxe4 Nxe4 $11 {[%mdl 4096] Endgame KN-KN} 26. Nd3 Nd2 27. Nc1 Ne4 28. Kf1 Kf8 29. Ke1 Nc5 30. Kd2 Ke7 31. Kc2 Kd6 32. Nd3 Nxd3 33. Kxd3 { KP-KP} Kd5 34. e4+ Kc5 35. e5 Kd5 36. f4 h5 37. h3 f5 38. exf6 gxf6 39. g4 hxg4 40. hxg4 {K3P-K3P} e5 41. g5 {[#] Hoping for g6.} (41. fxe5 {keeps more tension.} Kxe5 42. Ke3 Kd5 43. Kf4 Ke6 44. Ke4) 41... exf4 42. gxf6 {KPP-KPP} Ke6 43. Ke4 Kxf6 {( -> ...Kg5)} 44. Kxf4 {KP-KP} Ke6 45. Ke4 Kd6 46. Kd4 Kc6 47. Kc4 Kb7 48. Kxb4 {KP-K} Kb6 49. Kc4 {Threatening mate with Kb4.} Kc6 50. b4 $1 {[%CAl Bb3b4,Bb4b5,Bb5b6][%mdl 32]} Kb6 51. b5 Kb7 52. Kc5 Kc7 53. b6+ $1 Kb7 54. Kb5 Kb8 55. Kc5 Kb7 56. Kb5 Kb8 57. Kc5 Kb7 {Weighted Error Value: White=0.03/Black=0.03} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "7.3"] [White "Grischuk, Alexander"] [Black "Dubov, Daniil"] [Result "1/2-1/2"] [ECO "A50"] [WhiteElo "2777"] [BlackElo "2699"] [Annotator "Shahid"] [PlyCount "93"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 12,93,26,25,37,37,37,27,41,41,46,30,59,42,54,0,12,14,7,12,0,8,42,0,0,0, 0,-12,-9,-8,-6,-11,-13,-63,-63,-63,-63,-63,-63,-63,-63,-63,-63,-63,-63,-63,-63, -63,-63,-63,-63,-63,-63,-125,0,-63,-63,-63,-63,-63,-63,-63,-63,-63,-63,-63,-63, -63,-63,-63,-63,-63,-63,-63,-63,-63,-63,-63,0,-63,0,-63,0,-63]} 1. Nf3 Nf6 2. g3 g6 3. c4 b6 4. Bg2 Bb7 5. d4 Bg7 6. O-O O-O 7. d5 {The modern move.} Na6 { A50: Queen's Fianchetto Defence (1 d4 Nf6 2 c4 b6).} 8. Nc3 Nc5 9. Nd4 e5 { White has an edge.} 10. Nb3 d6 11. e4 Bc8 {[#]} 12. Bg5 $146 ({Predecessor:} 12. h3 Nh5 13. Kh2 Bd7 14. Bf3 Kh8 15. Be3 Nf6 16. Bg2 Ng8 17. Qd2 f5 18. exf5 gxf5 {0-1 (84) Martinovic,S (2504)-Kurnosov,I (2653) Aix les Bains 2011}) 12... h6 13. Bxf6 (13. Be3 $14) 13... Qxf6 14. Nxc5 bxc5 15. a3 {[%CAl Ba2a3,Ba3a4] [%mdl 32]} a5 16. Nb5 Qd8 17. a4 (17. b4 $5) 17... f5 18. exf5 gxf5 19. Qh5 Bd7 20. Rae1 Be8 21. Qe2 h5 22. h4 Qe7 23. Kh2 Bf6 24. Bh3 Bg6 25. Qd2 Qg7 26. b3 Kh8 27. Rg1 Rg8 28. Rg2 Qh7 29. Reg1 Rg7 30. Rf1 Re7 31. Re1 Bg7 32. Rgg1 {[#]} (32. f4 $15) 32... Bf6 (32... f4 $1 $17 33. Be6 (33. gxf4 Bh6 $17) 33... Bh6) 33. Rg2 $1 $15 Qg7 34. Rgg1 e4 35. Ref1 Be5 36. f4 $1 {[%CAl Rf4e5]} Bf6 (36... exf3 37. Rxf3 Qf6) 37. Rg2 Qf8 38. Re1 Rg7 39. Re3 Qf7 40. Re1 Qe8 41. Ree2 Re7 42. Re3 Kh7 43. Re1 Qd7 44. Rge2 Qe8 45. Rg2 $1 Qd7 46. Rge2 {[#] Strongly threatening Rxe4!} Qe8 47. Rg2 $1 {Weighted Error Value: White=0.06/Black=0.11} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "7.4"] [White "Nakamura, Hikaru"] [Black "Harikrishna, Pentala"] [Result "1/2-1/2"] [ECO "B11"] [WhiteElo "2736"] [BlackElo "2732"] [Annotator "TA"] [PlyCount "81"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,81,0,1,-2,0,-6,25,26,20,25,18,23,18,26,37,38,39,32,31,27,36,25,31,14, 25,25,24,24,25,22,23,19,24,21,28,20,38,18,15,8,8,8,8,12,12,7,8,7,8,0,0,0,0,0,0, -14,0,0,0,0,0,0,0,-23,0,0,0,0,0,0,0,0]} 1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. d4 (6. g3 Nf6 7. Bg2 dxe4 8. Nxe4 Nxe4 9. Qxe4 Qd5 10. O-O Qxe4 11. Bxe4 a5 12. d4 Nd7 13. c4 Nf6 14. Bf3 Bd6 15. Rd1 O-O 16. Be3 Rfd8 17. Rac1 Be7 18. d5 exd5 19. cxd5 Nxd5 20. Bxd5 cxd5 {1/2-1/2 (33) Nakamura,H (2736)-Harikrishna,P (2732) Lichess.org INT 2020}) 6... Nf6 7. Be2 {B11: Caro-Kann: Two Knights Variation.} dxe4 8. Qe3 Nbd7 9. O-O {White has an edge.} Bd6 10. Nxe4 Nxe4 11. Qxe4 Nf6 12. Qf3 Bc7 13. Rd1 {[#]} O-O $146 ({ Predecessor:} 13... h5 14. h4 Ng4 15. Bg5 Bh2+ 16. Kh1 f6 17. Be3 Bc7 18. Bc4 Qe7 19. Bf4 O-O-O 20. Bxc7 Qxc7 21. Bxe6+ {1/2-1/2 (62) Liang,A (2589) -Andreikin,D (2719) Sitges 2018}) 14. c3 Qd5 15. g3 Rad8 16. Be3 Rd7 17. Qg2 Qxg2+ 18. Kxg2 Rfd8 19. Bf3 h6 20. a4 Nd5 21. Bd2 a5 22. h4 Nb6 23. Be1 Nd5 24. Rd2 g6 25. Re2 h5 26. Bd2 Bd6 27. Be4 Be7 28. Bc2 Kg7 29. Bb3 Bf6 30. Bg5 Ra8 31. Bc4 Nb6 32. Bb3 Nd5 33. Rd1 Bxg5 34. hxg5 b5 35. Re5 Rb8 36. Ra1 Rdb7 ( 36... bxa4 {is interesting.} 37. Bxa4 Rc7 38. c4 Ne7 39. b3 Nf5) 37. Re2 bxa4 38. Bxd5 {The position is equal.} cxd5 39. Rxa4 Rxb2 40. Rxb2 Rxb2 41. Rxa5 { Weighted Error Value: White=0.04/Black=0.04} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "7.5"] [White "Nepomniachtchi, Ian"] [Black "Radjabov, Teimour"] [Result "1/2-1/2"] [ECO "B30"] [WhiteElo "2784"] [BlackElo "2765"] [Annotator "TA"] [PlyCount "149"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,149,26,27,27,27,27,26,31,27,37,22,31,29,33,28,21,25,24,32,52,12,23, 20,20,20,12,25,55,39,33,52,78,64,71,77,75,53,61,68,68,74,54,38,38,38,51,38,46, 38,39,39,45,28,39,39,54,26,26,26,28,31,33,0,30,0,8,13,8,7,8,16,60,60,70,50,50, 50,50,50,50,50,50,50,72,40,56,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bc4 Be7 5. d3 d6 6. Nd2 Nf6 7. Nf1 Bg4 8. f3 Be6 9. Ne3 O-O 10. O-O a6 { B30: Sicilian: 2...Nc6 3 Bb5, lines without ...g6.} 11. a4 Nb4 12. Bd2 d5 { White has an edge.} 13. exd5 Nbxd5 14. Nexd5 Nxd5 15. Qe2 {[#]} Re8 $146 ({ Predecessor:} 15... Nxc3 16. Bxc3 Bxc4 17. dxc4 f6 18. f4 Bd6 19. fxe5 Bxe5 20. Bxe5 Qe7 21. Rae1 Rae8 {1/2-1/2 (27) Gdanski,J (2492)-Johansson,L (2423) Sweden 2016}) 16. Bxd5 ({Reject} 16. Qxe5 {[#]} Bf6 $1 $15) 16... Bxd5 17. Qxe5 Bc6 18. Ne4 Bf8 19. Qc3 Qd5 20. b3 f5 21. Ng3 g6 22. Qb2 b5 23. axb5 axb5 24. Rxa8 Bxa8 25. Re1 Rxe1+ 26. Bxe1 Bc6 27. Bf2 c4 28. bxc4 bxc4 29. d4 Qe6 30. c3 f4 31. Nf1 g5 32. Qb8 Qd6 33. Qc8 Qd7 34. Qa6 Bd5 35. h3 Qe6 36. Qa5 Be7 37. Nd2 Kf7 38. Qc7 Qd6 39. Qc8 Qe6 $1 {[%CAl Re6c8]} 40. Qc7 Qd6 41. Qa5 Qe6 42. Qb5 h5 43. Qb1 {White wants to play Qh7+.} Qg6 44. Qb8 Qd6 45. Qh8 {[%CAl Rh8h7]} Qg6 46. Ne4 {[%mdl 64] [#] Deflection} (46. Kh1 {keeps more tension.} h4 47. Kh2 Qf5 48. Qb8 Qe6 49. Qb5) 46... Bxe4 47. fxe4 Qxe4 48. Qxh5+ Ke6 49. Qe8 {aiming for Qg8+.} Qb1+ 50. Kh2 {And now d5+! would win.} Qd3 51. Qg8+ Kd7 52. d5 (52. Qd5+ $14 Ke8 53. h4) 52... Qe2 $11 {The position is equal.} 53. Bd4 (53. Kg1 {seems wilder.} Qd1+ 54. Kh2 Qe2) 53... f3 {[%csl Gf3][%CAl Re2g2]} 54. Qe6+ $1 Qxe6 55. dxe6+ Kxe6 56. gxf3 {[%mdl 4096] Endgame KB-KB} Kf5 57. Kg2 Bd6 58. Kf2 Bf4 59. Ke2 Bd6 60. Kf2 Bf4 61. Bg7 Kg6 62. Bh8 Kf5 63. Ke2 Bh2 64. Bg7 Bf4 65. Bd4 Bd6 66. Bg7 Bf4 67. Bh8 Bh2 68. Kf1 Bd6 69. Bd4 Bf4 70. Bf2 Be5 71. Be1 Bf6 72. Kf2 Bg7 73. Bd2 Bf6 74. Ke2 Be5 75. Kf2 {Weighted Error Value: White=0.07/Black=0.04} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "7.6"] [White "Aronian, Levon"] [Black "So, Wesley"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2781"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "64"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 18,64,10,18,9,8,15,15,11,21,8,8,6,8,8,8,13,7,8,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,-6,0,-3,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Bf6 10. Re1 {The position is equal.} Re8 $1 {10...Re8 is better than 10...Nf5. C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} 11. Bf4 Rxe1 12. Qxe1 Ne8 13. c3 d5 14. Bd3 g6 15. Nd2 {[%CAl Bb1d2,Bd2f3,Bf3e5][%mdl 32]} Ng7 16. Nf3 Bf5 17. Bxf5 Nxf5 18. Qe2 c6 19. Re1 Ng7 20. Be5 Bxe5 21. Nxe5 Qd6 22. Qf3 f6 {[#]} 23. Ng4 $146 ({ Predecessor:} 23. Nd3 Re8 24. Rxe8+ Nxe8 25. Qe3 Ng7 26. g3 g5 27. a4 Kf7 28. a5 Qe7 29. Qf3 {1/2-1/2 (49) Grischuk,A (2777)-Giri,A (2764) Chess.com INT 2020 }) 23... Re8 24. Rxe8+ Nxe8 25. g3 h5 26. Qe2 Kf7 27. Ne3 Qe6 28. f3 Nd6 29. Kf2 Qh3 30. Kg1 Qe6 31. Kf2 Qh3 32. Kg1 Qe6 {An uneventful encounter. Weighted Error Value: White=0.00/Black=0.00} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "8.1"] [White "Vachier-Lagrave, Maxime"] [Black "So, Wesley"] [Result "1/2-1/2"] [ECO "C88"] [WhiteElo "2784"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "67"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,67,18,32,19,22,0,29,30,21,10,15,0,11,9,22,12,10,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,-38,-40,-60,-19,-26,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4 b4 9. a5 d6 10. d3 Be6 11. Bxe6 $1 {[%mdl 4] is now more promising than 11.Nbd2. C88: Closed Ruy Lopez: Anti-Marshall Systems.} fxe6 12. Nbd2 Qc8 13. c3 {White has an edge.} Rb8 14. Nc4 {[#]} Rb5 $146 ({Predecessor:} 14... Nd7 15. d4 exd4 16. cxd4 e5 17. dxe5 Ncxe5 18. Nfxe5 Nxe5 19. Nxe5 dxe5 20. Qd5+ Kh8 21. Qxe5 {1-0 (42) Purgar,I (2094)-Raguz,I (1895) Bol 2014}) 15. Bd2 Nd7 16. d4 bxc3 17. bxc3 Qe8 18. dxe5 Ndxe5 19. Ncxe5 Nxe5 20. Nd4 Rb2 21. Nxe6 Nf3+ 22. gxf3 Qg6+ 23. Kh1 Qxe6 24. Rg1 Bf6 25. Be3 Be5 26. Rg2 Qf7 27. Bd4 Qxf3 28. Bxe5 Qxd1+ (28... dxe5 {with more complications.} 29. Qd5+ Qf7 30. Rag1 g6 31. Qc6 Rxf2 32. Qxa6 Rxg2 33. Rxg2 Kg7) 29. Rxd1 {The position is equal.} dxe5 $15 {KRR-KRR} 30. Rd7 Rf7 31. Rd8+ Rf8 32. Rd7 Rf7 33. Rd8+ Rf8 34. Rd7 {Weighted Error Value: White=0.05/Black=0.07} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "8.2"] [White "Radjabov, Teimour"] [Black "Aronian, Levon"] [Result "1/2-1/2"] [ECO "D39"] [WhiteElo "2765"] [BlackElo "2781"] [Annotator "TA"] [PlyCount "88"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 24,88,25,26,20,28,24,16,26,26,27,23,22,22,23,18,5,15,27,27,37,0,10,9,21, 21,36,41,45,40,53,0,0,0,0,0,0,0,14,14,8,7,18,8,24,26,44,26,44,44,127,127,127, 127,127,127,127,127,127,127,127,0,127,0,127,0,127]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 dxc4 6. e4 c5 7. Bxc4 cxd4 8. Nxd4 Bxc3+ 9. bxc3 Qa5 10. Bb5+ Nbd7 11. Bxf6 Qxc3+ 12. Kf1 gxf6 13. h4 {Hoping for Rh3.} Qb4 {D39: Queen's Gambit Declined: Ragozin Defence with 5 Bg5 dxc4.} 14. Rh3 a6 $1 { [%CAl Ra6b5]} 15. Be2 Ne5 16. Rb1 Qd6 17. Qd2 Bd7 18. Rxb7 {[#]} Rd8 $146 { [#] And now ...Bc8 would win.} ({Predecessor:} 18... Bb5 19. Rc3 Rd8 20. Nf3 Qxd2 21. Bxb5+ axb5 22. Nxd2 O-O 23. Nf3 Nxf3 24. Rxf3 Rb8 {1/2-1/2 (38) So,W (2808)-Aronian,L (2780) Wijk aan Zee 2017}) 19. Qb4 Qxb4 20. Rxb4 a5 21. Rb7 O-O {...Bc8 is the strong threat.} 22. Ra7 Ba4 23. Nb3 Rc8 24. f4 Ng6 25. f5 exf5 26. exf5 Nf4 27. Rg3+ (27. Rxa5 $14 Nxe2 28. Rxa4) 27... Kh8 $11 28. Rxa5 Nxe2 29. Kxe2 Rc2+ 30. Kf1 Rc4 31. h5 h6 32. Kg1 Rd8 33. Ra7 Rd1+ 34. Kh2 { [#] Threatens to win with Ra8+.} Rh4+ 35. Rh3 Rxh3+ 36. Kxh3 Bxb3 ({Black should try} 36... Bd7 $1 $14) 37. axb3 {[%mdl 4096] Endgame KR-KR} Rd3+ 38. Kg4 Rxb3 39. Rxf7 Rb6 40. Rc7 Kg8 41. Rc8+ Kg7 42. Rc7+ Kg8 $1 43. Rc8+ Kg7 $1 44. Rc7+ Kg8 $1 {Weighted Error Value: White=0.17/Black=0.05} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "8.3"] [White "Harikrishna, Pentala"] [Black "Nepomniachtchi, Ian"] [Result "1/2-1/2"] [ECO "B53"] [WhiteElo "2732"] [BlackElo "2784"] [Annotator "Shahid"] [PlyCount "73"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,73,0,6,0,11,15,6,0,12,0,11,0,10,0,16,5,14,0,0,-33,0,0,0,-21,0,0,0,0,6, -2,-6,-32,-27,-23,-21,-31,0,-6,0,0,0,0,0,-39,-33,-17,14,18,92,91,91,91,95,95, 94,70,81,70,85,57,41,0,87,0,68,0]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nf6 5. Be2 Nc6 6. Qe3 {B53: Sicilian: 2...d6: Lines with Qxd4.} g6 7. O-O Bg7 8. Rd1 { The position is equal.} O-O 9. h3 Be6 (9... Nd7 10. Nc3 b6 11. Rb1 Bb7 12. Nd5 Rc8 13. c4 e6 14. Nc3 Qe7 15. b3 Rfd8 16. Bb2 Nc5 17. Nb5 Bxb2 18. Rxb2 a6 { 1/2-1/2 (27) Harikrishna,P (2732)-Nepomniachtchi,I (2784) Lichess.org INT 2020} ) 10. Nc3 Rc8 11. a3 Qa5 12. Bd2 {[#]} Nd7 $146 ({Predecessor:} 12... Ne5 13. Nxe5 Qxe5 14. Bd3 Nd7 15. Rac1 a6 16. Rb1 Qc5 17. Qe1 Ne5 18. Be3 Qc7 {1/2-1/2 (55) Demchenko,A (2632)-Gabrielian,A (2458) chess.com INT 2020}) 13. Rab1 Qc5 14. Qf4 (14. Nd5 $5) 14... Nd4 15. Nxd4 Bxd4 16. Qh4 Bf6 17. Qg3 Nb6 18. Be3 Qe5 19. Qxe5 (19. f4 {keeps more tension.} Qa5 20. f5 Bc4 21. Bf3 Rc7 22. Qf4) 19... Bxe5 20. Bd4 Bxd4 21. Rxd4 Rc5 22. Bd3 Rfc8 23. Na4 Nxa4 24. Rxa4 a6 25. c3 a5 26. h4 R8c6 {[#] White must now prevent ...Ba2.} 27. Bf1 Rb6 28. b4 Bd7 29. b5 $1 $16 Bxb5 {[#]} 30. Rd4 {Strongly threatening c4.} Bxf1 31. Rxb6 { [%mdl 4096] Endgame KRR-KRB} Ba6 32. Rb3 (32. Rd5 Rxc3 33. Rxa5) 32... Rc7 33. a4 Bc4 34. Rb6 Ba6 35. Rb3 Bc4 $1 {[%CAl Rc4b3]} 36. Rb6 Ba6 37. Rb3 {Weighted Error Value: White=0.12/ Black=0.09} (37. c4 $14) 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "8.4"] [White "Dubov, Daniil"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "E06"] [WhiteElo "2699"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "43"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,43,6,4,10,22,12,7,14,16,6,6,0,7,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 O-O 6. Nc3 dxc4 7. Ne5 c5 8. dxc5 Qxd1+ {The position is equal.} 9. Nxd1 {E06: Closed Catalan: Early deviations.} Bxc5 10. Ne3 c3 11. bxc3 Nbd7 12. Nd3 Rb8 13. Nc4 b6 14. Bf4 Bb7 15. Bxb8 (15. Bxb7 Rxb7 16. Rb1 Nd5 17. Na5 Nxf4 18. Nxb7 Nxd3+ 19. exd3 Be7 20. c4 Rb8 21. c5 Rxb7 22. c6 Rc7 23. cxd7 Rxd7 24. Ke2 g6 25. Rhc1 Bc5 26. a4 Kg7 27. Rc4 a5 28. f4 h5 {1/2-1/2 (44) Dubov,D (2699)-Nakamura,H (2736) chess24.com INT 2020}) 15... Bxg2 16. Bd6 Bxh1 17. Bxf8 Kxf8 18. f3 $1 Bg2 19. Nf4 Bh1 {[#]} 20. Nd3 $146 ({Predecessor:} 20. Kf1 b5 21. Nb2 e5 22. Nfd3 Ba3 23. Nd1 e4 24. N3f2 Bxf3 25. exf3 exf3 26. Rb1 a6 27. Rb3 Bc5 28. c4 bxc4 29. Rxf3 {1-0 (72) Dubov, D (2699)-Karjakin,S (2752) chess24.com INT 2020}) (20. Kd2 $2 g5 21. Nxe6+ fxe6 22. Rxh1 h5 $19) 20... Bg2 21. Nf4 Bh1 22. Nd3 {A rather calm draw. Weighted Error Value: White=0.01/Black=0.00} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "8.5"] [White "Anton Guijarro, David"] [Black "Grischuk, Alexander"] [Result "1/2-1/2"] [ECO "C78"] [WhiteElo "2675"] [BlackElo "2777"] [Annotator "TA"] [PlyCount "40"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,40,29,42,0,0,0,21,18,27,11,16,21,25,-58,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. c3 b5 7. Bb3 d6 8. d4 Bb6 9. a4 {[%CAl Ba2a4,Ba4a5][%mdl 32]} Rb8 10. a5 {C78: Ruy Lopez: Archangelsk and Möller Defences.} Ba7 ({Avoid the trap} 10... Bxa5 $2 11. dxe5 (11. d5 Ne7 $18 ) 11... dxe5 12. Qxd8+ Kxd8 13. Bd5 $18 (13. Bxf7 Bb6 $16)) 11. h3 Bb7 12. Be3 $1 {[%mdl 4] d5 is the strong threat. is recently more successful than 12.Re1.} Nxe4 13. d5 Bxe3 14. dxc6 {And now Qd5! would win.} Nxf2 $1 15. Qd5 {[#]} (15. Qe2 $11 Nxh3+ 16. Kh1 Nf2+ 17. Rxf2 Bxf2 18. Qxf2 (18. cxb7 Ba7 $15) 18... Bxc6 19. Nxe5 $1 {[%mdl 64] Double Attack} Bxg2+ 20. Kg1) 15... O-O $5 $146 { [%mdl 8] An interesting novelty.} ({Predecessor:} 15... Nxh3+ 16. Kh1 Qf6 17. cxb7 Nf4 18. Qc6+ Kd8 19. Nh2 Qg5 20. Na3 Ne2 21. Rf3 Ng3+ 22. Rxg3 Qxg3 23. Bxf7 {1-0 (35) Navara,D (2708)-Ganguly,S (2651) Wijk aan Zee 2011}) 16. cxb7 $11 {The position is equal.} Ne4+ 17. Kh2 Bf4+ 18. Kg1 $1 Be3+ 19. Kh2 Bf4+ 20. Kg1 $1 Be3+ {A rather calm draw. Weighted Error Value: White=0.28/Black=0.09} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "8.6"] [White "Carlsen, Magnus"] [Black "Giri, Anish"] [Result "1/2-1/2"] [ECO "D94"] [WhiteElo "2862"] [BlackElo "2764"] [Annotator "TA"] [PlyCount "84"] [EventDate "2020.12.26"] [EventType "tourn"] [EventCountry "NET"] [Tiebreak "Koya+Number of black wins+Number of wins"] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,84,0,1,7,9,16,11,-12,0,-11,0,-11,-4,0,0,-1,-4,-20,-12,-10,-10,-16, -16,-20,-20,-26,-29,-29,0,0,0,0,0,0,0,-24,-25,-45,-36,-93,0,0,0,0,0,-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]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. cxd5 Nxd5 7. Bc4 Nb6 8. Bb3 c5 9. O-O {D94: Grünfeld: 4 Nf3 Bg7 5 e3.} Bg4 10. dxc5 {[#] Threatens to win with Qxd8.} N6d7 11. h3 Bxf3 12. Qxf3 Nxc5 13. Rd1 Qc8 14. Nd5 Nc6 15. e4 {[#]} Nxb3 $146 ({Predecessor:} 15... Re8 16. Bg5 Ne6 17. Bh4 Qb8 18. Rac1 Qe5 19. Rxc6 bxc6 20. Nxe7+ Kh8 21. Nxc6 Qxb2 22. e5 Rec8 23. Bf6 Rc7 24. Bxe6 fxe6 25. Nd8 Bxf6 26. Qxa8 Qc2 27. Nf7+ {1-0 (27) Parker,J (2533)-Howell,D (2533) Sunningdale 2008}) 16. Qxb3 e6 17. Nc3 a6 18. Be3 b5 19. Rac1 Qb7 20. a4 {[%CAl Ra4b5]} b4 {White must now prevent ...Na5.} 21. Ne2 Rfd8 22. Rxd8+ $1 Rxd8 23. Qc2 Nd4 24. Nxd4 Bxd4 25. Rd1 {[#]} Rc8 $1 26. Qd2 (26. Qe2 Bxe3) 26... Bf6 27. f3 (27. Bd4 $15 e5 28. Be3) 27... b3 (27... Rd8 $17 28. Qe2 Rxd1+ 29. Qxd1 b3) 28. Bd4 $11 {The position is equal.} Bxd4+ 29. Qxd4 {[%mdl 4096] Endgame KQR-KQR} Qc6 30. a5 ( 30. h4 {feels hotter.} Qc2 31. Kh2 e5 32. Qd7 h5 33. Rd6) 30... Qc5 (30... Qc2 {looks sharper.} 31. h4 h6 32. Qd7 g5 33. hxg5 hxg5 34. Qd2 Rc5) 31. Qxc5 Rxc5 {KR-KR} 32. Rd3 Rxa5 33. Rxb3 Rc5 34. Rb8+ Kg7 35. b4 Rc2 36. b5 Rb2 (36... axb5 {is more complex.} 37. Rxb5 Ra2 38. Kh2 Kf6 39. h4 Kg7) 37. b6 a5 38. Ra8 Rxb6 39. Rxa5 Rb1+ 40. Kh2 Rb2 41. Kg3 Re2 42. h4 h5 {Weighted Error Value: White=0.05/Black=0.06} 1/2-1/2