[Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "1.1"] [White "Harikrishna, Pentala"] [Black "Vachier-Lagrave, Maxime"] [Result "1/2-1/2"] [ECO "B51"] [WhiteElo "2732"] [BlackElo "2784"] [Annotator "TA"] [PlyCount "54"] [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 9,54,8,12,8,18,23,20,0,0,0,0,0,0,0,0,0,0,-27,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. O-O a6 5. Bd3 Ngf6 6. c3 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} b5 7. a4 Bb7 8. axb5 axb5 9. Rxa8 Qxa8 10. Bxb5 Bxe4 11. d4 Bxb1 12. dxc5 { [#] Strongly threatening c6.} Be4 {And now ...Bc6 would win.} ({Weaker is} 12... dxc5 13. Ne5 $18) 13. Re1 $1 e6 {Threatens to win with ...Bxf3.} (13... Bxf3 $5 14. gxf3 Kd8 15. cxd6 exd6 $17) 14. Rxe4 {The position is equal.} Qxe4 15. c6 {Ng5 is the strong threat.} Be7 {[#] aiming for ...Nb6.} 16. Nd2 $1 Qd5 17. cxd7+ Nxd7 18. Qa4 Qb7 19. Bc6 Qc7 {[#]} 20. Nc4 $146 ({Predecessor:} 20. Ne4 f5 21. Ng5 Bxg5 22. Bxg5 Rg8 23. g4 fxg4 24. Qxg4 Kf7 25. Qh5+ Kf8 26. Bxd7 Qxd7 {1/2-1/2 (117) Jones,G (2677)-Mekhitarian,K (2543) Batumi 2018}) 20... d5 21. Ne5 Qxe5 {[%CAl Re5e1]} 22. Bxd7+ Kd8 {[%CAl Re5e1]} 23. Qa8+ Kxd7 { [%CAl Re5e1]} 24. Qa4+ Kd8 {[%CAl Re5e1]} 25. Qa8+ $1 Kd7 {[%CAl Re5e1]} 26. Qa4+ Kd8 {[%CAl Re5e1]} 27. Qa8+ $1 Kd7 {[%CAl Re5e1] A rather calm draw. Weighted Error Value: White=0.01/Black=0.02} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "1.2"] [White "Dubov, Daniil"] [Black "Radjabov, Teimour"] [Result "1/2-1/2"] [ECO "E06"] [WhiteElo "2699"] [BlackElo "2765"] [Annotator "TA"] [PlyCount "72"] [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 14,72,5,0,0,0,0,-5,0,0,22,18,15,0,16,0,0,0,35,35,36,38,28,34,25,50,58, 64,87,87,87,87,86,86,83,84,81,73,81,57,55,44,60,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0]} 1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Be7 5. Bg2 O-O 6. Qc2 c5 7. dxc5 Qa5+ 8. Nc3 $1 {8.Nc3 scores better than 8.Nbd2.} dxc4 {E06: Closed Catalan: Early deviations.} 9. O-O Qxc5 10. Bg5 Nc6 11. Bxf6 Bxf6 12. Ne4 Qf5 13. Rfd1 { [#]} Bxb2 $146 ({Predecessor:} 13... e5 14. Qxc4 Be6 15. Nxf6+ Qxf6 {1/2-1/2 (15) Ippolito,D (2370)-Ringoir,T (2473) Charlotte 2016}) 14. Qxb2 {Nd4 is the strong threat.} Qxe4 15. Rac1 e5 {[#]} 16. Nd4 $1 {[%mdl 64] Pin} Qg6 17. Nxc6 bxc6 18. Rxc4 Be6 19. Rxc6 Rab8 20. Qxe5 Rb1 21. Rcc1 Rxc1 22. Rxc1 Bxa2 23. Qa5 Be6 24. Qxa7 Qg5 25. f4 Qb5 26. e4 g6 27. h4 Rd8 28. f5 (28. Qf2 $14) 28... gxf5 $11 {The position is equal.} 29. Qe7 Qb6+ 30. Kh2 {And now Qg5+ would win. } fxe4 31. Qg5+ Kf8 32. Re1 Rd4 33. Qf6 (33. Bxe4 $2 Rxe4 $1 {[%mdl 512]} 34. Rxe4 (34. Qh6+ $2 Ke8 $19) 34... Qf2+ 35. Kh1 Qf3+ 36. Kg1 Qxe4 $19) 33... Kg8 34. Qg5+ Kf8 35. Qf6 ({Avoid the trap} 35. Bxe4 $2 {[#]} Rxe4 $1 {[%mdl 512]} 36. Rxe4 (36. Qh6+ $2 Ke8 $19) 36... Qf2+ 37. Kh1 Qf3+ 38. Kg1 Qxe4 $19) 35... Kg8 36. Qg5+ Kf8 {Weighted Error Value: White=0.05/Black=0.03} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "1.3"] [White "Anton Guijarro, David"] [Black "So, Wesley"] [Result "1/2-1/2"] [ECO "C67"] [WhiteElo "2675"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "128"] [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 21,128,15,12,15,17,18,17,23,33,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,113,105, 106,102,106,99,109,98,106,117,114,116,102,97,104,102,133,102,97,72,74,71,71,63, 71,43,62,49,62,73,64,39,93,88,88,88,88,88,88,88,88,88,88,88,102,88,90,88,92,59, 129,28,28,24,28,28,28,28,28,28,32,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20, 20,16,16,-8,-8,-8,-8,-8,-8]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. h3 Ne7 10. Rd1+ Ke8 11. Nc3 { [%CAl Bb1c3,Bc3e4,Be4g5][%mdl 32]} Ng6 12. Be3 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4.} (12. b3 {is more complex.} h5 13. Bb2 Be7 14. Re1 Be6 15. Nd4) 12... Be7 13. Rd2 h5 14. Re1 h4 15. Ne4 {[#]} (15. Nd4 $5 {[%CAl Rd4b5]}) 15... Rh5 $146 ({Predecessor:} 15... Bf5 16. Bg5 Bxg5 17. Nexg5 Rh5 18. g4 hxg3 19. fxg3 Bxh3 20. Nxh3 Rxh3 21. e6 Rxg3+ 22. Kf2 Rg4 23. Rd7 Rc8 24. Rxf7 Nf8 25. Rh1 {1-0 (25) Caruana,F (2835)-So,W (2770) Lichess.org INT 2020}) 16. Bg5 { Nf6+ is the strong threat.} Be6 17. Bxe7 Kxe7 18. Neg5 Bd5 19. e6 f6 20. c4 $1 $36 {[%CAl Rc4d5][%mdl 2048] White has some pressure.} Bxc4 21. Rd7+ Kf8 22. Rxc7 {Threatens to win with e7+.} fxg5 (22... Rxg5 $11 23. Rf7+ (23. Nxg5 fxg5 24. Rxb7 Nf4 $11) (23. Rxb7 $2 Rh5 $19) 23... Kg8 24. Nxg5 fxg5) 23. e7+ $16 Ke8 {[#]} 24. Nd4 $1 {[%CAl Rd4f5] aiming for Nf5.} g4 ({Wrong is} 24... Bxa2 $2 25. Nf5 $18) 25. hxg4 Rg5 26. Nf5 Rxf5 27. gxf5 Nf4 {[#]} 28. Re4 $1 { [%CAl Re4f4][%mdl 1024] White has strong compensation.} Nd5 29. Rxb7 Ba6 30. Rb3 Nf6 31. Re1 Bc8 32. Rb4 Bxf5 33. Rxh4 {And now Rh8+ would win.} Kd7 34. Rd4+ Kc7 35. g4 Bd7 36. f3 Nd5 37. Kf2 Kd6 38. Kg3 Be6 (38... Re8 $14) 39. f4 Bf7 40. f5 Re8 41. g5 a6 42. g6 Bg8 43. Kg4 ({Much weaker is} 43. f6 $6 gxf6 44. g7 a5 $11) 43... Rxe7 44. Rxe7 Kxe7 45. Kg5 Nc7 46. Re4+ Kd6 47. b3 { Black must now prevent f6.} (47. a3 {feels hotter.} Bd5 48. Rb4 Ne8 49. Rb7 c5 50. Rf7) 47... c5 (47... Bd5 $1 $14 48. Rb4 c5) 48. Rh4 ({White should try} 48. f6 $16 Ne6+ 49. Kg4 gxf6 50. Kf5) 48... Ne8 $11 49. Ra4 Nf6 50. Rxa6+ Ke5 51. Ra7 Ne4+ 52. Kg4 {Strongly threatening Re7+.} Nf6+ 53. Kh4 Kxf5 {The position is equal.} 54. Rxg7 c4 55. bxc4 Bxc4 56. a4 Bf1 57. a5 Bd3 58. Kh3 Kg5 59. Kg2 Kh6 60. Rc7 {Hoping for g7.} Kxg6 61. Kf2 Kf5 62. Ke3 Nd5+ {[%mdl 64] Double Attack} 63. Kxd3 {White threatens Rb7 and mate.} Nxc7 64. a6 Nxa6 {Weighted Error Value: White=0.07/Black=0.06} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "1.4"] [White "Carlsen, Magnus"] [Black "Aronian, Levon"] [Result "1/2-1/2"] [ECO "D38"] [WhiteElo "2862"] [BlackElo "2781"] [Annotator "TA"] [PlyCount "122"] [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 9,122,29,35,10,18,21,29,14,13,6,45,47,50,45,39,25,27,24,65,69,55,65,81, 43,47,58,69,63,70,60,59,68,101,91,92,83,118,100,100,84,103,108,109,58,99,103, 90,97,117,108,104,97,107,92,140,43,56,0,10,0,0,-42,23,0,0,0,41,37,36,59,51,54, 46,60,70,75,781,0,0,0,0,0,22,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,8]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 (4... Be7 5. cxd5 exd5 6. Bf4 c6 7. Qc2 g6 8. e3 Bf5 9. Bd3 Bxd3 10. Qxd3 Nbd7 11. h4 a5 12. Kf1 a4 13. a3 Qb6 14. Qc2 h5 15. Bg5 O-O 16. Ne5 Rfe8 17. Bxf6 Nxf6 18. Rh3 Qb3 { 0-1 (58) Carlsen,M (2863)-Aronian,L (2767) Stavanger 2020}) 5. cxd5 exd5 6. Bf4 {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} c6 7. e3 Bf5 8. Qb3 {White has an edge.} Qb6 9. Nh4 {[#]} Bg6 $146 ({Predecessor:} 9... Be6 10. Bd3 Be7 11. Qc2 Nh5 12. Bg3 Nxg3 13. hxg3 g6 14. f4 Rg8 15. Nf3 Nd7 16. Rxh7 { 1-0 (30) Le,Q (2709)-Gajewski,G (2616) chess.com INT 2020}) 10. Nxg6 hxg6 11. h3 Nbd7 12. Bd3 c5 {Hoping for ...c4.} 13. a3 Ba5 14. Qxb6 Bxb6 15. dxc5 Nxc5 16. O-O-O O-O-O 17. Kb1 Ne6 18. Be5 Bc7 19. Bxc7 Kxc7 20. Bc2 g5 21. Bb3 Kc6 22. Rc1 Kd6 23. Nb5+ Ke5 24. Nxa7 Ne4 25. Nb5 g4 26. Rc2 ({Better is} 26. hxg4 $16 Nxf2 27. Rhf1 Nxg4 28. Rxf7) 26... Rh5 27. f3 gxf3 28. gxf3 Ng3 29. Rd1 Nf5 {[#]} 30. Rc3 Ne7 31. Nc7 g5 {[#]} 32. Nxe6 (32. e4 $1 $16) 32... fxe6 $14 33. Rc7 Nf5 34. e4 Nd4 35. Rxb7 Rxh3 (35... dxe4 $15 36. fxe4 Rxh3) 36. exd5 $11 exd5 37. Re7+ (37. Rb4 {is interesting.} Rxf3 38. Re1+ Kf5 39. Bd1 Rf4 40. Rb7) 37... Kd6 (37... Kf6 {is interesting.} 38. Re3 Nxf3 39. Rf1 g4 40. Bd1 d4) 38. Re3 Nxb3 39. Rxb3 $14 {[%mdl 4096] Endgame KRR-KRR} Rf8 40. Rdd3 Rf4 41. Kc2 Ke5 42. Rb5 Rd4 {[%mdl 8192]} (42... Rh2+ $16 43. Kb3 Rd4) 43. Rxd4 $2 (43. f4+ $1 $18 Ke4 44. Rxh3 gxf4 45. Rb7) 43... Kxd4 $18 {KR-KR. The position is equal. } 44. Rb3 Rh2+ 45. Kb1 Rh3 (45... Rh1+ {seems wilder.} 46. Ka2 Kc4 47. Rb4+ Kd3 48. a4 d4) 46. Ka2 Kc4 47. Rc3+ Kb5 48. Kb3 d4 49. Rd3 Kc5 {...g4! is the strong threat.} 50. Kc2 $1 Rg3 51. a4 Rg2+ 52. Rd2 Rg3 53. Rf2 Kb4 54. b3 g4 55. fxg4 d3+ 56. Kd2 Rxg4 57. Kxd3 Rg3+ 58. Kc2 Rc3+ 59. Kb1 {Strongly threatening Ka2.} Rxb3+ 60. Rb2 Rxb2+ 61. Kxb2 Kxa4 {Weighted Error Value: White=0.17/Black=0.10} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "1.5"] [White "Giri, Anish"] [Black "Nepomniachtchi, Ian"] [Result "1/2-1/2"] [ECO "D90"] [WhiteElo "2764"] [BlackElo "2784"] [Annotator "TA"] [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 9,83,0,19,18,17,16,19,15,23,20,10,6,17,9,116,123,118,117,115,114,117, 115,120,118,114,94,93,41,36,36,42,51,49,41,44,46,45,41,50,47,48,48,58,60,53,39, 34,42,45,18,22,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,-8,-8,-8,-8,-8,-8,-8,-8,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 (4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 O-O 9. O-O Nc6 10. Be3 Bg4 11. f3 Bd7 12. Rb1 Qc7 13. Qd2 Rfd8 14. Rfc1 Be8 15. h4 e5 16. Bd5 cxd4 17. cxd4 exd4 18. Nxd4 Qe5 19. Ne2 b6 20. Bf4 Qe7 { 1/2-1/2 (40) Giri,A (2764)-Nepomniachtchi,I (2784) chess24.com INT 2020}) 4... Bg7 5. h4 c6 6. cxd5 {D90: Gr├╝nfeld: 4 Nf3 Bg7 sidelines.} cxd5 7. Bf4 Nc6 8. e3 O-O 9. Qb3 $1 {9.Qb3 scores better than 9.Ne5.} a6 10. Rc1 {[#]} Re8 $146 ({ Predecessor:} 10... b5 11. Ne5 Na5 12. Qb4 Nh5 13. Bh2 Bxe5 14. Bxe5 Nc6 { 1-0 (44) Sargsyan,S (2416)-Hayrapetyan,H (2502) Yerevan 2017}) 11. Be2 Bg4 ( 11... Na5 $11 12. Qa3 Bg4) 12. Qxb7 $16 Bxf3 13. Bxf3 e5 14. dxe5 ({Reject} 14. Qxc6 $6 exf4 15. Nxd5 (15. Bxd5 $2 Rc8 $19) 15... Nxd5 $11) 14... Nxe5 15. Bxe5 Rxe5 16. O-O Re7 17. Qb3 Rb8 18. Nxd5 (18. Qc2 $16) 18... Rxb3 $14 {[#]} 19. Rc8 $1 {[%CAl Rc8d8]} Re8 (19... Rd7 20. Rxd8+) 20. Rxd8 Rxd8 21. Nxf6+ Bxf6 22. axb3 Bxh4 {[%mdl 4096] Endgame KRB-KRB} 23. Ra1 Rd6 24. g3 Bf6 25. Ra2 h5 26. Be2 h4 27. gxh4 Rd2 28. Kf1 Bxh4 29. Ra4 g5 {The position is equal.} 30. f4 Rxb2 31. fxg5 Bxg5 32. Rg4 f6 33. Bxa6 Kf8 34. e4 Rxb3 35. e5 Rf3+ 36. Kg2 Rf4 37. Rxf4 (37. Kg3 {seems wilder.} Rf5 38. exf6 Ra5 39. Bc4 Bxf6 40. Re4) 37... Bxf4 38. exf6 Be5 39. Kf3 Bxf6 40. Ke4 Bh8 41. Kf5 Kg7 42. Bc4 {Weighted Error Value: White=0.05/Black=0.08} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "1.6"] [White "Grischuk, Alexander"] [Black "Nakamura, Hikaru"] [Result "0-1"] [ECO "C54"] [WhiteElo "2777"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "128"] [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 12,128,27,8,25,19,22,17,14,16,13,12,18,24,25,36,26,20,11,0,0,0,10,0,0,0, 0,-19,0,0,29,28,8,13,14,20,27,-86,-63,-70,-75,-74,-73,-81,-40,-38,0,-82,-69, -206,-142,-113,-105,-116,-117,-120,-135,-118,-18,-22,-11,-27,-25,-16,-15,-4,0, 0,0,-14,-8,-137,-132,-136,-132,-132,-129,-129,-132,-169,-132,-132,-132,-133, -135,-116,-89,-89,-89,-89,-89,-95,-95,-95,-89,-89,-89,-89,-89,-89,0,-8,-8,-508, -464,-406,-22,-22,-22,-29971,-29972,-29972,-29972,-29971,-29971,-29978,-29979, -29987,-29988]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O h6 { 6...h6 is the recent fashion.} 7. Re1 O-O {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. Nbd2 a5 9. Nf1 Be6 {The position is equal.} 10. Bb5 Ne7 11. d4 exd4 12. cxd4 Bb6 13. Ng3 d5 14. e5 Ne4 15. Bd3 Nxg3 16. hxg3 Bg4 17. Be3 a4 18. Rc1 Qd7 {[#]} 19. Kh2 $146 ({Predecessor:} 19. a3 Rfe8 20. Kh2 Nf5 21. Bb1 Nxe3 22. Rxe3 Bf5 23. Ba2 c6 24. Nh4 Bh7 25. f4 {1/2-1/2 (37) Ding,L (2791)-Nakamura,H (2736) chess24.com INT 2020}) 19... Bh5 20. e6 fxe6 { [#]} 21. Ne5 $1 Qe8 22. g4 Bg6 23. Nxg6 Nxg6 {[%CAl Be7g6,Bg6f4,Bf4d3][%mdl 32] } 24. g5 (24. Bc2 $11) 24... Nf4 25. gxh6 Nxd3 26. Qxd3 Qh5+ 27. Kg1 c6 28. hxg7 Rf6 29. f3 (29. Qe2 $1 $11 {remains equal.} Qf5 30. g3) 29... Bc7 $17 30. Bf2 ({White must play} 30. Kf2 $1 $15 Qh2 31. Rg1) 30... Kxg7 31. Kf1 Rg6 32. g4 Qh2 33. Ke2 Bg3 34. Rf1 e5 (34... Rf8 $17 {Hoping for ...Qg2.} 35. Kd1 Bxf2) 35. dxe5 $1 $11 Re8 {And now ...Bxf2 would win.} 36. Kd1 Bxf2 37. Rc2 Qxe5 ( 37... Qf4 {is more complex.} 38. Rcxf2 Rxe5 39. Re2 Rh6 40. Rfe1 Rxe2 41. Qxe2 Rf6) 38. Rcxf2 Qe3 (38... Qf4 {looks sharper.} 39. Re2 Rxe2 40. Qxe2 Rf6 41. Kc2 Kf7) 39. Qxe3 Rxe3 {[%mdl 4096] Endgame KRR-KRR} 40. Re2 Rge6 41. Rfe1 (41. Rg2 $11 {keeps the balance.}) 41... Rd3+ $17 42. Kc2 Rxe2+ 43. Rxe2 Rxf3 {KR-KR } 44. Re7+ Rf7 45. Re6 Rf2+ 46. Kc3 Kf7 47. Rh6 Ke7 48. g5 a3 49. b4 Rxa2 { aiming for ...Rg2.} 50. Kb3 Rg2 {...a2 is the strong threat.} 51. Kxa3 Rg3+ 52. Ka4 Rxg5 {Threatens to win with ...Rg4.} 53. Rh7+ Kd6 54. Rxb7 Rg3 55. Rb8 d4 ( 55... Kc7 $17 56. Rh8 Rg2) 56. Rd8+ $11 Ke5 57. Re8+ $2 {[%mdl 8192]} (57. b5 $11 {and White stays safe.}) 57... Kf4 58. Rf8+ {[#]} Ke3 $2 ({Black should try } 58... Ke4 $1 $19 {White must now prevent ...Rc3.} 59. Re8+ Kd5) 59. Rf6 d3 60. Kb3 $2 {[%mdl 8192]} (60. Re6+ $11 Kf2 61. Kb3) 60... Ke2 {Black mates.} 61. Rd6 Ke1 62. Re6+ Kd1 63. Rxc6 d2+ 64. Kc4 {[#]} Kc2 $1 {Weighted Error Value: White=0.37/Black=0.28} 0-1 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "2.1"] [White "Vachier-Lagrave, Maxime"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "C54"] [WhiteElo "2784"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "96"] [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 12,96,17,17,18,12,18,6,9,11,17,22,19,11,22,28,25,21,32,0,0,0,18,0,10,22, 21,16,16,19,14,21,14,8,8,0,0,0,13,10,18,22,12,14,23,16,22,23,22,23,26,18,44,38, 39,29,41,8,22,22,23,0,10,10,8,19,8,17,10,10,33,15,20,0,0,0,0,-37,-42,-47,0,0,0, -45,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 h6 { 6...h6 is a critical line.} 7. Re1 O-O {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. Nbd2 a5 9. Nf1 Be6 10. Bb5 Ne7 11. d4 exd4 12. cxd4 Bb6 13. Ng3 d5 14. e5 Ne4 15. Bd3 Nxg3 16. hxg3 Bg4 17. Bc2 c5 18. dxc5 Bxc5 19. Be3 Rc8 20. Bxc5 Rxc5 21. Qd2 Qc7 22. Bd3 Nc6 23. Qe3 Nb4 24. Nd4 Nxd3 25. Qxd3 Qb6 {[#]} 26. f3 $146 ({Predecessor:} 26. b3 Rfc8 27. Kh2 Qb4 28. Qe3 Rc3 29. Qf4 Bd7 30. Red1 a4 31. Ne2 Qxf4 32. Nxf4 {1/2-1/2 (76) Vachier Lagrave,M (2784)-Nakamura,H (2736) chess24.com INT 2020}) 26... Bd7 27. Qd2 a4 28. Kh2 Rfc8 29. Rad1 Rc4 30. g4 Re8 31. b3 axb3 32. axb3 Rc5 33. Qf4 Qc7 { Threatening ...f6.} 34. Rd3 (34. Qg3 {seems wilder.} Ra8 35. Ne2 Re8 36. f4 Rc2 37. Rd3) 34... Rc3 35. Rxc3 Qxc3 36. Rc1 Qa5 37. g5 hxg5 38. Qxg5 Qb6 39. Rd1 Qc7 40. f4 Ra8 41. Rd3 $40 {[%mdl 128] [#] Strongly threatening Rg3. White is up to no good.} Ra6 $1 {[%CAl Ra6g6] ...Rg6 is the strong threat.} 42. e6 Bxe6 43. Rg3 {[%csl Gg3][%CAl Rg5g7]} g6 44. Qh4 Bd7 45. Nf3 Bf5 46. Nd4 Bd7 47. Nf3 Bf5 48. Nd4 Bd7 {Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "2.2"] [White "Nepomniachtchi, Ian"] [Black "Grischuk, Alexander"] [Result "0-1"] [ECO "C54"] [WhiteElo "2784"] [BlackElo "2777"] [Annotator "TA"] [PlyCount "118"] [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 12,118,14,15,8,14,16,4,11,12,20,16,10,20,10,-52,-41,-40,-5,-12,-17,-18, -17,-27,-62,-111,-35,-50,19,-60,-27,-22,-33,-29,-30,-102,-95,-101,-89,-147, -153,-150,-139,-146,-88,-98,-88,-88,-88,-88,-88,-114,-89,-132,-140,-156,-136, -145,-139,-242,-246,-249,-249,-239,-227,-220,-214,-285,-270,-344,-339,-977, -880,-959,-764,-1047,-959,-980,-436,-368,0,-885,-844,-653,-727,-519,-459,-459, -452,-3934,-2514,-5606,-3704,-12837,-12837,-12836,-12834,-12843,-12840,-12843, -12844,-29981,-29982,-29981,-29983,-29987,-29988,-29988,-29989]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. Re1 {is now more promising than 7.Bb3.} a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. h3 Ba7 $5 {[%mdl 4] [#] An interesting side line.} 9. Na3 $146 ({ Predecessor:} 9. Bb3 h6 10. Nbd2 Be6 11. Bc2 Re8 12. Nf1 d5 13. exd5 Bxd5 14. Ng3 Qd6 15. Nf5 {1-0 (51) So,W (2770)-Grischuk,A (2777) chess.com INT 2020}) 9... h6 {The position is equal.} 10. Nb5 Bb6 11. Be3 Bxe3 12. Rxe3 Re8 13. d4 ( 13. Qc2 $11) 13... exd4 $15 14. cxd4 Rxe4 15. Rxe4 Nxe4 16. Qb3 Qd7 17. Re1 Nf6 18. Qe3 Qd8 (18... Nb4 $17 {And now ...Nc2 would win.} 19. Qe7 Qxe7 20. Rxe7 Bd7) 19. a3 Bd7 ({Better is} 19... Bf5 $15) 20. d5 (20. Qb3 $11) 20... Ne5 ( 20... Nb8 {seems wilder.} 21. Nc3 Na6 22. Nd4 Qf8 23. Qd2 Nc5) 21. Nxe5 dxe5 22. Nc3 Qf8 23. Qg3 (23. Qxe5 $2 Re8 $19) (23. Bf1 $1 $11) 23... Qc5 $17 24. Bd3 Qb6 25. Rxe5 ({Don't go for} 25. Qxe5 $2 Re8 $19) (25. Nd1 $142) 25... Qxb2 {[%mdl 64] [#] Double Attack} 26. Ne4 Nxe4 27. Bxe4 Qc1+ 28. Kh2 Qc5 29. d6 Qxd6 30. Bxb7 Rb8 31. Bf3 Rb5 ({Of course not} 31... Qxa3 $6 32. Rd5 $11) 32. Re3 Kf8 33. Rc3 Rc5 $36 {[%mdl 2048] Black is on the roll.} 34. Rxc5 Qxc5 35. Qh4 (35. Be4 $17 {was worth a try.}) 35... Qxa3 $19 36. Qd8+ Be8 {Hoping for .. .Qd6+.} 37. Qxc7 a4 38. Bd5 Qe7 39. Qb8 {intending Bc6.} Qc5 40. Qd8 g5 ({ Weaker is} 40... Qxf2 41. Qd6+ Kg8 42. Qb8 $17) 41. f4 $2 {[#]} (41. Kg1) 41... gxf4 42. Bf3 Qe5 43. Qc8 Kg7 44. Qg4+ Qg5 (44... Kh7 $142 45. Qc8 a3) 45. Qc8 Qe5 (45... Qg3+ 46. Kh1 Qe1+ 47. Kh2 Qe5) 46. Qg4+ $1 Kf6 47. Qc8 Ke7 48. Qa6 Qd6 49. Qe2+ Kf8 50. Qb2 (50. Qc4 $142) 50... a3 51. Qc3 Bd7 52. h4 Ke7 53. Qa5 Be6 54. Qa7+ Kf8 55. Qa8+ Kg7 56. Qa5 a2 {Black mates.} 57. Qc3+ f6 58. Qa5 Qe5 59. Qa7+ Bf7 {Weighted Error Value: White=0.38/Black=0.40} 0-1 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "2.3"] [White "Aronian, Levon"] [Black "Giri, Anish"] [Result "1-0"] [ECO "B87"] [WhiteElo "2781"] [BlackElo "2764"] [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 19,79,-10,-17,-12,-10,-10,0,-49,-40,-67,-75,-85,-26,-55,-48,-44,45,0,91, 91,81,87,220,75,54,73,57,66,54,62,52,69,66,56,55,45,67,48,39,24,20,11,318,355, 486,512,462,568,569,558,640,643,638,638,638,633,660,649,672,660,794,776]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Be3 b5 8. Bb3 Be7 9. a3 O-O 10. Qe2 Bb7 11. f3 {B87: Sicilian Scheveningen/Najdorf: 6 Bc4, with early ...b5.} Nc6 12. O-O-O Na5 {[#]} 13. h4 $146 {The position is equal.} ({ Predecessor:} 13. g4 Rc8 14. g5 Nd7 15. Rhg1 g6 16. Bxe6 Rxc3 17. bxc3 fxe6 18. Nxe6 Qc8 19. Bd4 {0-1 (35) Brongers,H (2056)-Filipenko,A (2250) Bucharest 2019} ) 13... Rc8 14. Kb1 {[#]} Rxc3 $1 15. bxc3 Qc7 ({Better is} 15... d5 $1 $17) 16. g4 Nd7 {[%mdl 1024] Black has compensation.} 17. g5 Ne5 (17... Nc4 $15) 18. h5 Nec4 (18... Nac4 $1 $11) 19. Bc1 $16 d5 20. g6 Nxa3+ {[#]} (20... Bf6 $16 { was necessary.}) 21. Bxa3 (21. Ka2 $1 $18 {is the precise move to win. Threatens to win with h6.} N3c4 22. gxf7+ Rxf7 23. h6) 21... Bxa3 22. gxf7+ Rxf7 23. Rd3 Nxb3 24. cxb3 dxe4 25. fxe4 Qe5 26. b4 {Black must now prevent Nc2.} Bxe4 {[#] And now ...Qd5! would win.} 27. Nc2 $1 {Re1 is the strong threat.} Rf5 $1 28. Re1 Bxd3 29. Qxe5 Rxe5 30. Rxe5 $14 {[%mdl 4096] Endgame KRN-KB} Kf7 {[%mdl 8192] [#]} (30... Bf5 $1 $11) 31. Rc5 $1 $18 g5 32. Rxg5 { White is clearly winning.} Kf6 33. Rg8 Be4 34. h6 e5 35. Rb8 Kf5 36. Rb6 a5 37. bxa5 Bc5 38. Rxb5 Bg1 39. Kb2 Bd3 40. Rb7 {Weighted Error Value: White=0.12/ Black=0.39} 1-0 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "2.4"] [White "So, Wesley"] [Black "Carlsen, Magnus"] [Result "1/2-1/2"] [ECO "E92"] [WhiteElo "2770"] [BlackElo "2862"] [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 27,64,-10,2,8,12,0,0,0,0,0,0,0,0,0,0,0,8,0,21,33,33,25,30,16,23,0,0,0,0, 0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. Nd5 Nxd5 11. cxd5 c6 12. Bc4 cxd5 13. Bxd5 Nd7 14. Nd2 Nb6 (14... Nc5 {with more complications.} 15. Nc4 Bf8 16. O-O Be6 17. Rfd1 Rac8) 15. Bb3 {E92: King's Indian: Classical: 6 Be2 e5:7 dxe5, 7 Be3 and Petrosian System without 7...Nbd7.} Be6 16. Bxe6 Rxe6 17. Rc1 Rc8 { [#]} 18. Ke2 $146 ({Predecessor:} 18. Rxc8+ Nxc8 {1/2-1/2 (18) Feletar,D (2420) -Muse,M (2453) Rabac 2003}) 18... Rec6 19. Rxc6 Rxc6 20. b3 Bf8 21. Be3 Bb4 22. a3 Bxa3 23. Ra1 Bc5 24. Rxa7 Bxe3 25. Kxe3 $14 {[%mdl 4096] Endgame KRN-KRN} Rc7 26. Nc4 Nxc4+ {The position is equal.} 27. bxc4 Rxc4 28. Rxb7 $11 {KR-KR} Rc3+ 29. Ke2 Rc2+ 30. Ke3 Rc3+ 31. Ke2 Rc2+ 32. Ke3 Rc3+ {Not much happened in this game. Weighted Error Value: White=0.04/Black=0.03} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "2.5"] [White "Radjabov, Teimour"] [Black "Anton Guijarro, David"] [Result "1-0"] [ECO "D38"] [WhiteElo "2765"] [BlackElo "2675"] [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 15,101,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,29,28,33,36,37,33,54,0,0,0,0,0,0,0, 0,-18,-6,-17,12,0,12,12,21,21,58,55,79,79,79,80,80,64,64,72,62,68,126,114,109, 122,125,11,135,48,56,51,53,45,118,118,118,124,511,475,482,468,29976,29977, 29978,29978,29978,29979,29978,29978,29982,29985,29985,29986,29986,29987,29987, 29987]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 d5 5. cxd5 exd5 6. Bg5 h6 7. Bxf6 Qxf6 8. e3 {8.Qa4+ gains popularity.} O-O 9. Qb3 {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} Qb6 10. Bd3 c6 11. O-O {The position is equal.} Nd7 {[%CAl Bb8d7,Bd7f6,Bf6g4][%mdl 32]} 12. Qc2 Qd8 13. a3 Bd6 14. Rfe1 Nf6 { [#]} 15. Ne5 $146 ({Predecessor:} 15. b4 a6 16. e4 dxe4 17. Nxe4 Nxe4 18. Bxe4 a5 19. bxa5 Qxa5 20. a4 Be6 21. Ne5 {0-1 (31) Sith,J-Pierecker,M Bratislava 1991}) 15... Bxe5 16. dxe5 Ng4 17. f4 d4 {[#]} 18. Rad1 $1 {And now h3 would win.} Nxh2 {White must now prevent ...Qh4.} (18... Qh4 19. g3) 19. Kxh2 ({ Don't play} 19. Bh7+ Kh8 $15) (19. Ne2 $14 Qh4 20. Nxd4 (20. Bh7+ $2 Kh8 $19)) 19... Qh4+ $11 20. Kg1 dxc3 21. bxc3 Bg4 22. Rb1 Rad8 23. Be4 (23. Be2 { looks sharper.} Rd7 24. Red1 Rfd8 25. Rd4 c5 26. Rxd7 Rxd7 27. Bc4) 23... Rd7 24. Qf2 Qxf2+ (24... Qe7 {with more complications.} 25. Rb4 h5 26. Qb2 f6 27. exf6 Rxf6 28. Bb1 Rfd6) 25. Kxf2 Rfd8 (25... Rd2+ {is more complex.} 26. Kg3 Bc8 27. a4 Rfd8 28. a5 Kf8) 26. Kg3 Be6 27. a4 b6 28. a5 b5 29. Bxc6 Rc7 30. Bxb5 Rxc3 31. Bf1 g5 32. Rb7 gxf4+ 33. Kxf4 a6 (33... Ra3 $14) 34. Ra1 $1 $16 Rd2 35. Rb6 $1 Rf2+ {[#]} 36. Kg3 (36. Ke4 $1 $16) 36... Rfc2 (36... Rf5 $11 { keeps the balance.}) 37. Rxa6 (37. Bxa6 $16 Bd5 38. Bf1 (38. Rxh6 Rxg2+ 39. Kf4 Rf2+ 40. Kg3 Rg2+ 41. Kf4 Rf2+ 42. Kg3 Rg2+ $11)) 37... Rxe3+ $14 38. Kh2 Rxe5 39. Rb6 {Strongly threatening a6.} Bd5 ({Black should play} 39... Ra2 $14 40. Rxa2 Bxa2) 40. a6 $16 {[%CAl Ba5a6,Ba6a7][%mdl 32] Hoping for Rb5.} Rh5+ {[#]} 41. Kg3 $1 Bxg2 $2 {[%mdl 8192] This costs Black the game.} 42. Bxg2 { Threatens to win with a7.} Rg5+ 43. Kf3 {a7 is the strong threat.} Rcxg2 $18 { [%mdl 4096] Endgame KRR-KRR} (43... Rgxg2 $18 44. a7 (44. Rxh6 Rgf2+ 45. Kg4 Rg2+ 46. Kf5 Rgf2+ 47. Kg5 Rg2+ 48. Kf4 Rgf2+ 49. Kg5 Rg2+ 50. Kf5 Rgf2+ 51. Ke5 Rfe2+ 52. Kd6 Red2+ 53. Ke7 Rc7+ 54. Ke8 Rc8+ 55. Ke7 Rc7+ 56. Ke8 Rc8+ 57. Ke7 Rc7+ $11) 44... Rgf2+ 45. Kg3 Rg2+ 46. Kf4 Rgf2+ 47. Ke5 Rfe2+ 48. Kd6 Rcd2+ 49. Kc5 Rd8) 44. a7 {White mates.} R2g3+ 45. Ke2 Rg2+ 46. Kd3 R2g3+ 47. Kc4 R5g4+ 48. Kb5 Rb3+ 49. Ka6 Rxb6+ 50. Kxb6 Rb4+ 51. Kc5 {Weighted Error Value: White=0.10/Black=0.40} 1-0 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "2.6"] [White "Harikrishna, Pentala"] [Black "Dubov, Daniil"] [Result "1/2-1/2"] [ECO "B33"] [WhiteElo "2732"] [BlackElo "2699"] [Annotator "TA"] [PlyCount "77"] [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 17,77,0,20,0,21,26,22,34,17,31,23,3,8,0,10,6,8,0,8,0,0,0,0,0,0,0,0,0,0, 0,7,4,16,14,26,7,18,18,52,16,19,10,1,1,14,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf5 d5 7. exd5 Bxf5 8. dxc6 bxc6 9. Qf3 Qd7 10. Bg5 {B33: Sicilian: Pelikan and Sveshnikov Variations. } Be7 (10... e4 $5 {[%CAl Re4f3]} 11. Qd1 Qxd1+ 12. Nxd1 Be6 $11) 11. Rd1 Qe6 { [#] aiming for ...Bg4.} 12. Bc4 $1 Qxc4 13. Qxf5 O-O {[#]} 14. Bxf6 $146 ({ Much worse is} 14. Qxe5 Rfe8 $17) ({Predecessor:} 14. Rd3 e4 15. Rh3 Rfe8 16. b3 Qc5 17. Qxc5 Bxc5 18. Bxf6 gxf6 19. Ke2 Rad8 20. Rd1 f5 21. Rh5 {1-0 (21) Terteryants,M (2495)-Khokhlov,I (2485) ICCF corr 1994}) 14... Bxf6 15. Qe4 $1 { [%CAl Re4c4]} Qe6 16. O-O Rfd8 17. b3 Be7 18. Rxd8+ (18. Qe3 {seems wilder.} f5 19. g3 e4 20. Ne2 Qf6 21. Kg2) 18... Rxd8 19. Rd1 Rxd1+ 20. Nxd1 f5 21. Qe2 e4 22. g3 g6 23. Ne3 Kg7 24. Qd2 Bf6 25. h4 Kf7 26. Kg2 h5 27. a4 Be5 28. Qa5 Qe7 {The position is equal.} 29. Qa6 Qd7 30. Qc4+ Kg7 $1 31. Kf1 Qd2 32. Qxc6 { [#] Strongly threatening Qb7+.} Bxg3 33. fxg3 Qxe3 $11 {[%mdl 4096] Endgame KQ-KQ} 34. Qc7+ Kf6 35. Qd6+ Kf7 36. Qd7+ Kf6 {White must now prevent ...Qf3+.} 37. Qd6+ Kf7 38. Qd7+ Kf6 {And now ...Qf3+ would win.} 39. Qd6+ {An uneventful encounter. Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "3.1"] [White "Dubov, Daniil"] [Black "Vachier-Lagrave, Maxime"] [Result "1/2-1/2"] [ECO "A33"] [WhiteElo "2699"] [BlackElo "2784"] [Annotator "TA"] [PlyCount "137"] [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 18,137,26,18,36,-22,6,16,0,0,18,25,40,8,41,26,68,66,66,57,119,110,157, 129,162,106,141,104,102,92,106,98,119,112,119,105,120,118,138,150,142,133,171, 167,158,85,89,68,67,0,0,0,0,0,0,0,0,0,0,-397,-391,-347,-386,-382,-354,-283,-67, -67,-67,-67,-80,-80,-72,-115,-28,-28,-18,-18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, -8,-8,-8,-8,-8,-8,-8,-8,-8,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. g3 Bc5 7. Nb3 Be7 8. Bg2 O-O { 8...b6 is not played anymore.} 9. Bf4 d6 10. O-O h6 {A33: Symmetrical English: 2 Nf3 Nf6 3 d4 cxd4 4 Nxd4 e6 5 Nc3 Nc6.} 11. Qd2 (11. e4 $14) 11... e5 12. Be3 Be6 13. Nd5 Qd7 14. Rfd1 Rfd8 {[#]} 15. Rac1 $146 ({Predecessor:} 15. Qe1 Ng4 16. Rac1 Bxd5 17. cxd5 Nxe3 18. fxe3 Nb8 19. Qf2 Na6 20. Rf1 {1/2-1/2 (69) Royal,S (1930)-Ethelontis,A (2187) London 2018}) 15... Rac8 16. Qe1 b6 17. Nxf6+ Bxf6 18. c5 d5 (18... bxc5 $2 19. Nxc5 Qe8 20. Nb7 $18) ({Better is} 18... Ne7 $14) 19. cxb6 $16 Be7 20. bxa7 Bb4 {[#]} 21. Qf1 ({White should try} 21. Nc5 $1 $18 {[%mdl 512]} Qe7 22. Nxe6 fxe6 23. Qf1 Nxa7 24. a3) 21... Nxa7 22. Bc5 Qa4 23. Bxb4 Qxb4 24. Qe1 Qxe1+ 25. Rxe1 d4 26. Bb7 Rb8 27. Nc5 Bd5 28. Bxd5 Rxd5 {[#]} 29. Rc2 f5 30. Rec1 e4 31. Ne6 (31. Nb3 $142) 31... Rd6 32. Nf4 g5 33. Nh5 (33. Ng2 $14) 33... d3 $11 34. exd3 exd3 35. Rd2 Nc6 36. Rc5 Nd4 37. Kg2 ({Much worse is} 37. Rxd3 Ne2+ 38. Kf1 Rxd3 $17) 37... Nc2 $36 {[%mdl 2048] Black is pushing.} 38. Rd5 $2 {[%mdl 8192]} Rxd5 $19 39. Nf6+ Kf7 40. Nxd5 Rxb2 {[%mdl 4096] Endgame And now ...Ne1+ would win. KRN-KRN} 41. Kh3 Kg6 $2 (41... Rb1 $19 {...Ne1 is the strong threat.} 42. g4 (42. Rxd3 g4+ 43. Kg2 Ne1+ { [%mdl 64] Double Attack} 44. Kf1 Nf3+ {[%mdl 64] Discovered Attack} 45. Rd1 Rxd1+ 46. Ke2 Rxd5 47. Ke3 Ra5 48. Kd3 Ra3+ 49. Kc2 Rxa2+ 50. Kd3 Nxh2 51. Kc3 Rxf2 52. Kc4 f4 53. Kd4 fxg3 54. Ke3 Rf3+ 55. Ke4 g2 56. Kd5 g1=Q 57. Kc6 Qc1+ 58. Kd5 Rd3+ 59. Ke5 Qe3+ 60. Kf5 Rd5#) 42... Rg1 43. gxf5 Ne1) 42. g4 $15 fxg4+ 43. Kg3 Rxa2 {aiming for ...Nb4!} 44. Rxd3 h5 45. Ne3 {[#]} Ra1 $1 46. f3 $1 $11 ({Don't go for} 46. Rd6+ $2 Kf7 $19) 46... h4+ 47. Kxg4 {The position is equal.} Rg1+ (47... Ra4+ {seems wilder.} 48. Kh3 Nd4 49. Ng4 Kf5 50. Nf2 Kf4 ) 48. Kh3 Ne1 49. Rd6+ Kf7 50. Rd1 Kg6 51. Rd6+ Kf7 52. Rd1 Kf6 53. Nc2 Nxf3 { [%csl Gg1][%CAl Rg5g4][%mdl 64] Discovered Attack} 54. Rxg1 Nxg1+ {KN-KN} 55. Kg4 Ne2 56. Ne3 Nf4 57. Kf3 Nd3 58. Ke4 Nc5+ 59. Kf3 Kg6 60. Ng4 Ne6 61. Ke4 Nc5+ 62. Kf3 Nd7 63. Ke4 Nf6+ {[%mdl 64] Double Attack} 64. Kf3 Nxg4 (64... Ng8 {keeps more tension.} 65. Ke4 Kh5 66. Ne5 Nh6 67. Kf3 Nf5) 65. Kxg4 h3 66. Kxh3 Kh5 67. Kg3 g4 68. h3 gxh3 69. Kxh3 {What a bad dream for Black. Weighted Error Value: White=0.24/Black=0.21} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "3.2"] [White "Anton Guijarro, David"] [Black "Harikrishna, Pentala"] [Result "1/2-1/2"] [ECO "D46"] [WhiteElo "2675"] [BlackElo "2732"] [Annotator "TA"] [PlyCount "89"] [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 18,89,10,0,10,0,26,26,22,23,41,39,36,-5,-10,-33,-8,-6,0,0,0,0,0,-24,-24, -24,0,-17,0,0,0,-7,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,47,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Be2 Bd6 7. O-O O-O 8. Qc2 dxc4 9. Bxc4 b5 10. Be2 a6 {D46: Semi-Slav: 5 e3 Nbd7 6 Bd3, Black avoids the Meran.} 11. Ng5 h6 {Recently 11...Be7 got a lot of attention.} 12. Nge4 Be7 {[#] White has an edge.} 13. a3 $146 ({Predecessor: } 13. Rd1 Qc7 14. Bd2 c5 15. dxc5 Nxe4 16. Nxe4 f5 17. Ng3 Qxc5 18. Qb3 Qb6 19. Ba5 {1-0 (19) Khairullin,I (2629)-Kjartansson,G (2484) Jerusalem 2015}) 13... Bb7 14. b4 a5 15. Nxf6+ (15. Rb1 {is more complex.} axb4 16. axb4 Nd5 17. Nc5 Nxc5 18. bxc5 Qc7 19. Bd2) 15... Nxf6 16. Rb1 axb4 17. axb4 Nd5 18. Nxd5 exd5 19. Bd2 Bd6 20. Ra1 Qe7 21. Qb2 Rfe8 22. Bd3 Qf8 (22... Rxa1 {feels hotter.} 23. Rxa1 h5 24. Re1 Bc8 25. Qc3 Bd7) 23. Rfe1 Rxa1 24. Rxa1 Ra8 25. Ra3 Qb8 26. h3 Rxa3 27. Qxa3 Bc8 28. e4 dxe4 29. Bxe4 Bd7 30. d5 cxd5 31. Bxd5 Qe8 32. Qf3 Be6 33. Qe4 h5 (33... Qc8 {with more complications.} 34. g4 Bf8 35. Be3 Bxd5 36. Qxd5 Qc2) 34. Bxe6 (34. Qe2 {is interesting.} Bh2+ 35. Kxh2 Qb8+ 36. Kg1 Bxd5 37. Qxh5 Qd6 38. Be3) 34... Qxe6 {The position is equal.} 35. Qxe6 fxe6 $14 {[%mdl 4096] Endgame KB-KB} 36. g4 hxg4 37. hxg4 Kf7 38. Kg2 e5 39. Kf3 Ke6 {[#] Strongly threatening ...Kd5.} 40. Ke4 g6 41. f3 Be7 42. Bc3 Bd6 43. Bd2 Be7 44. Bc3 Bd6 45. Bd2 {Weighted Error Value: White=0.05/Black=0.05} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "3.3"] [White "Carlsen, Magnus"] [Black "Radjabov, Teimour"] [Result "1/2-1/2"] [ECO "D37"] [WhiteElo "2862"] [BlackElo "2765"] [Annotator "TA"] [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 13,93,13,7,-13,-8,-27,-41,-35,-32,-49,-41,-37,-47,-62,-48,-48,-45,-47, -45,-45,-45,-49,-45,-42,-42,-43,-33,-56,0,0,0,-2,12,6,7,7,7,4,18,20,23,9,18,0, 0,1,57,8,8,8,8,8,14,8,8,8,8,8,12,8,8,8,8,8,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0] } 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 {6...b6 is the modern continuation.} 7. c5 Nh5 8. Be5 {D37: Queen's Gambit Declined: 5 Bf4.} c6 9. Bd3 g6 10. h4 {Black is slightly better.} Nxe5 {[#]} 11. dxe5 $146 ({ Predecessor:} 11. Nxe5 f6 12. Nxg6 hxg6 13. Bxg6 Ng7 14. Qd2 f5 15. h5 b6 16. cxb6 axb6 17. O-O-O {0-1 (34) Haller,P (2205)-Betker,J (2448) ICCF email 2015}) 11... f5 12. b4 b6 13. Na4 bxc5 14. Nxc5 Qb6 15. Rb1 a5 16. a3 axb4 17. axb4 Bxc5 18. bxc5 Qxc5 19. O-O Qe7 20. Ra1 Bd7 ({Better is} 20... Rb8 $15) 21. Qb3 $11 Rab8 (21... Rfd8 {is more complex.} 22. Qb7 Rab8 23. Qa7 Qf8 24. Rfb1 Ra8) 22. Qc3 Qb4 23. Qxb4 Rxb4 24. Ra7 Rd8 25. Rc1 Rbb8 26. Nd4 Ra8 27. Rb7 Rab8 28. Ba6 Rxb7 29. Bxb7 Kf7 (29... f4 $11) 30. Kf1 Rb8 {The position is equal.} 31. Bxc6 Rc8 $1 32. Ke2 Bxc6 33. Rxc6 Rxc6 34. Nxc6 {[%mdl 4096] Endgame KN-KN} f4 $1 35. Nd4 h6 36. Kf3 {White wants to play e4.} fxe3 37. Kxe3 g5 38. hxg5 hxg5 39. g3 {Black should prevent Kf3.} g4 40. Kd3 (40. Nb5 {feels hotter.} Kg6 41. Nd6 Kg5 42. Kd4 Ng7 43. Kc5) 40... Ng7 41. Kc3 Nf5 42. Nxf5 exf5 43. Kd3 $1 Ke7 44. Ke3 Kf7 45. Kd3 Ke7 46. Ke3 Kf7 47. Kd3 {Weighted Error Value: White=0.05/ Black=0.06} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "3.4"] [White "Giri, Anish"] [Black "So, Wesley"] [Result "0-1"] [ECO "A14"] [WhiteElo "2764"] [BlackElo "2770"] [Annotator "TA"] [PlyCount "50"] [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 18,50,8,5,4,6,0,0,0,0,0,0,0,0,0,-51,-24,-74,-63,-64,-75,-79,-61,-81,-87, -76,-87,-156,-163,-221,-174,-387,-400,-386,-382]} 1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5 7. cxd5 Nxd5 8. Nc3 Nc6 9. Bb2 Nxc3 10. Bxc3 Qc7 {A14: English Opening: 1...e6 with b3 by White.} 11. Qb1 {[#]} e5 $5 $146 { [%mdl 8] An interesting novelty.} ({Predecessor:} 11... Rd8 12. Qb2 Bf8 13. d4 b6 14. dxc5 bxc5 15. Ne5 Bb7 16. Rac1 Nxe5 17. Bxe5 Qb6 18. Rc4 Bxg2 19. Kxg2 { 1/2-1/2 (65) Darban,M (2401)-Sandipan,C (2560) Esfahan 2005}) 12. e3 f5 { The position is equal.} 13. Rc1 Be6 14. Qb2 {[%CAl Rf3e5]} Bf6 15. Ne1 Rad8 16. d3 (16. Bxc6 $11 bxc6 17. d3) 16... Bd5 17. b4 Bxg2 18. Kxg2 cxb4 19. Bxb4 Rf7 20. Bc3 f4 21. exf4 exf4 22. Rab1 ({White should try} 22. d4) 22... Bxc3 $17 23. Qxc3 (23. Rxc3 {was necessary.} Qd7 24. Nf3) 23... Qd7 {Hoping for ...Nd4.} 24. Qc5 $2 {[#]} (24. Nf3 {is a better defense.}) 24... Nd4 $19 25. Rc4 f3+ { Weighted Error Value: White=0.32/Black=0.05} 0-1 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "3.5"] [White "Grischuk, Alexander"] [Black "Aronian, Levon"] [Result "1/2-1/2"] [ECO "C54"] [WhiteElo "2777"] [BlackElo "2781"] [Annotator "TA"] [PlyCount "36"] [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 12,36,22,8,15,5,46,35,37,29,69,70,78,25,33,0,0,0,18,-6,0,0,22,-14,0,0, 27]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. O-O O-O 7. Re1 $1 { [%mdl 4] now scores much better than the old 7.Bb3.} a5 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3.} 8. Bb3 {[#]} Kh8 $146 ({Predecessor:} 8... h6 9. Nbd2 Be6 10. Ba4 Ng4 11. Re2 f5 12. h3 Nf6 13. Bb3 Bxb3 14. Qxb3+ Kh7 15. exf5 {1-0 (32) Karjakin,S (2752)-Sjugirov,S (2675) chess.com INT 2020}) 9. h3 h6 {White is slightly better.} 10. Nbd2 g5 {next ...g4 is good for Black. } 11. Nf1 g4 12. hxg4 (12. Bxh6 $16 gxf3 13. Qxf3) 12... Nxg4 $11 13. Be3 Nxe3 {The position is equal.} 14. Nxe3 ({Reject} 14. fxe3 f5 $15) 14... Qf6 $1 15. Nh2 Qg6 16. Nf3 Qf6 17. Nh2 Qg6 18. Nf3 Qf6 {Weighted Error Value: White=0.16/ Black=0.09} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "3.6"] [White "Nakamura, Hikaru"] [Black "Nepomniachtchi, Ian"] [Result "1/2-1/2"] [ECO "B51"] [WhiteElo "2736"] [BlackElo "2784"] [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 9,79,16,57,65,80,77,75,48,41,33,37,36,43,37,48,0,0,-30,0,0,0,-2,25,33, 39,25,55,0,0,0,26,20,5,13,52,0,62,0,12,0,0,0,0,0,9,0,69,72,95,11,31,12,11,12, 12,33,81,86,85,87,62,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. c4 (4. Ba4 Ngf6 5. d3 g6 6. O-O Bg7 7. c3 O-O 8. Re1 a6 9. d4 b5 10. Bc2 Bb7 11. Nbd2 Rc8 12. Nf1 cxd4 13. cxd4 Qc7 14. Bd3 e5 15. d5 Nc5 16. Bc2 Nh5 17. Be3 {1/2-1/2 (72) Nakamura,H (2736)-Nepomniachtchi,I (2784) chess.com INT 2020} ) 4... e5 5. O-O g6 {[#]} 6. b4 $146 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7.} ({Predecessor:} 6. d3 Bg7 7. Nc3 Ne7 8. Bg5 f6 9. Bxd7+ Bxd7 10. Be3 O-O 11. Ne1 Nc6 12. Qd2 {0-1 (46) Voigt,G (2174)-Reddmann,H (2275) Hamburg 2018}) 6... b6 7. bxc5 bxc5 8. d3 {White is better.} Bg7 9. Nc3 Ne7 10. Nd5 O-O 11. Rb1 Nb6 12. Nxe7+ (12. Bg5 {keeps more tension.} f6 13. Bd2 Rb8 14. Rb3 Bd7 15. Qc2) 12... Qxe7 13. a4 {[%CAl Ba2a4,Ba4a5][%mdl 32]} Rb8 (13... a6 $5 {[%CAl Ra6b5]} 14. Bc6 Rb8 $11) 14. a5 Na8 15. Bg5 f6 16. Bd2 Nc7 17. Bc6 Bd7 18. Bxd7 (18. Qa4 $14 Rxb1 19. Rxb1) 18... Qxd7 $11 19. Qc2 Qc6 20. Rxb8 Rxb8 21. Rb1 Rb7 22. Bc3 (22. Rxb7 $14 Qxb7 23. Qa4) 22... Bh6 (22... Ne6 $11) 23. Qa2 (23. Rxb7 $14 Qxb7 24. Qa4) 23... Kf8 24. Rb3 Na6 25. Qb1 Rxb3 26. Qxb3 Nb4 27. Ne1 f5 (27... Na6 $11) 28. exf5 $1 $14 gxf5 {[#]} 29. d4 (29. g3 $1 $16 ) 29... exd4 $11 30. Bxb4 {And now Ba3 would win.} Qe4 {[#]} 31. Kf1 $1 cxb4 32. Qxb4 Bf4 {White must now prevent ...d3.} 33. Qb8+ {[%mdl 64] Double Attack} Kg7 {aiming for ...d3.} 34. Qxa7+ Kg6 {...d3 is the strong threat.} 35. Qb8 ( 35. f3 $14 Qe3 36. g3) 35... d3 {The position is equal.} 36. Qg8+ Kh6 37. Qf8+ Kg6 (37... Kh5 $5 38. Qf7+ $8 Kh6 39. Qf6+ Kh5 40. Qf7+ Kh6 41. Qf6+ Kh5 42. Qf7+ $11) 38. Qg8+ Kh6 39. Qf8+ Kg6 {( -> ...Qe2+)} (39... Kh5 $5 40. Qf7+ $8 Kh6 41. Qf6+ Kh5 42. Qf7+ Kh6 43. Qf6+ Kh5 44. Qf7+ $11) 40. Qg8+ {Weighted Error Value: White=0.18/Black=0.17} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "4.1"] [White "Vachier-Lagrave, Maxime"] [Black "Nepomniachtchi, Ian"] [Result "0-1"] [ECO "B90"] [WhiteElo "2784"] [BlackElo "2784"] [Annotator "TA"] [PlyCount "138"] [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 12,138,9,6,12,0,0,2,8,11,12,16,14,0,10,10,22,14,4,9,10,0,0,0,0,15,29,27, 27,18,97,68,79,54,151,128,125,8,22,9,10,-10,0,-7,0,0,28,47,47,14,14,8,8,0,436, 459,426,421,327,225,281,297,466,179,153,134,389,108,145,97,107,91,85,91,91,91, 79,81,101,57,54,25,25,25,25,44,97,104,105,96,101,64,171,167,144,56,62,20,20,20, 20,20,20,20,20,-58,-58,-43,-43,-77,-77,-77,-8,-4423,-2573,-11017,-6087,-5513, -4421,-29965,-29966,-29981,-29982,-29982,-29982,-29984,-29985,-29988,-29989]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 e5 7. Nde2 Nc6 { B90: Sicilian Najdorf: Unusual White 6th moves, 6 Be3 Ng4 and 6 Be3 e5.} 8. Nd5 Nxd5 9. exd5 Nb4 {The position is equal.} 10. Be4 {Strongly threatening c3.} a5 11. c3 Na6 {[#]} 12. Bc2 $146 ({Predecessor:} 12. O-O f5 13. Bc2 Be7 14. f4 O-O 15. Be3 e4 16. Nd4 Nc7 17. Bb3 Bf6 18. a4 {1/2-1/2 (61) Vachier Lagrave,M (2784)-Ding,L (2791) chess24.com INT 2020}) 12... g6 13. h4 h5 14. Bg5 Be7 15. Qd2 Nc5 16. c4 Bd7 17. Nc3 Bxg5 18. hxg5 Qb6 19. O-O-O Qb4 20. Rh4 a4 (20... b5 $11 {keeps the balance.}) 21. Re1 O-O 22. a3 $1 {[%CAl Ra3b4]} Nb3+ (22... Qb6 $14) 23. Bxb3 $16 Qxb3 24. Qc2 (24. c5 $1 $16 dxc5 25. Ne4 Qc4+ 26. Qc3 Qxc3+ 27. bxc3) 24... Qxc2+ $11 25. Kxc2 Rfc8 26. Kd2 {Black must now prevent Ne4.} Kg7 27. Rc1 Bf5 28. f3 f6 29. gxf6+ Kxf6 30. g4 hxg4 31. fxg4 Kg5 32. Rh2 Bxg4 {[%mdl 8192]} (32... Kxg4 $11 33. Rg1+ Kf3) 33. Ne4+ $18 {[%mdl 64] Double Attack} Kf4 34. Kd3 Rh8 35. Rf2+ Bf3 36. Rg1 {Threatening mate with Rg3.} (36. Nxd6 g5 $16) 36... Rh2 (36... Rh3 $142 37. Rxg6 Rf8) 37. Rxh2 $2 (37. Rxg6 Rxf2 38. Rf6+ (38. Nxf2 e4+ 39. Kd4 Re8 $16) 38... Kg4 39. Nxf2+ Kg3 40. Ke3) 37... Bxe4+ {[%mdl 4096] Endgame KRR-KRB} 38. Kd2 Bf5 $2 {[%mdl 8192]} (38... g5 $16) 39. Rf1+ $2 (39. Rh4+ $18 {is the precise move to win.} Kf3 40. Rf1+ Kg3 41. Rh7) 39... Kg5 $16 40. Rh7 b5 41. c5 (41. cxb5 $6 Rb8 $11) 41... dxc5 42. Rc7 c4 43. Rb7 Rh8 44. Rxb5 Rh3 45. Rb4 Rd3+ 46. Kc1 c3 $1 47. Rxa4 {Threatens to win with bxc3.} cxb2+ 48. Kxb2 Rd2+ (48... e4 $1 $14) 49. Kc1 $1 {[%CAl Rc1d2]} Rxd5 50. Rg1+ $1 Kh6 51. Rc4 Rd3 (51... e4 $14) 52. a4 $18 e4 {[#]} 53. Kb2 ({ White should try} 53. Rd1 $1 $16 {[%CAl Rd1d3] And now Rxd3 would win.} Rb3 54. Kc2) 53... e3 $1 $14 54. Re1 {With the idea a5.} Kg5 $1 55. a5 Rd2+ 56. Kc3 Ra2 $1 57. Kb4 ({Don't play} 57. Rxe3 $6 Rxa5 58. Re8 Ra2 $16) 57... e2 58. Rc3 ( 58. Kb3 $11 Rxa5 59. Rxe2) 58... Kf4 $15 {[%mdl 1024] Black has compensation.} 59. a6 Be4 {...Bf3 is the strong threat.} 60. a7 {[#]} Bf3 $1 61. Rc7 g5 (61... Ke3 $17 {aiming for ...g5.} 62. Rg7 Kf2 63. Rxe2+ Kxe2 64. Rxg6 Rxa7) 62. Kb5 $2 {[%mdl 8192]} (62. Re7 $11) 62... Kg3 $19 63. Re7 Kf2 64. Rb1 g4 65. Kb6 g3 {Black mates.} 66. Re8 g2 67. Rf8 Ra3 68. Rc1 e1=Q {[%csl Ga3][%CAl Re1a5]} 69. Rxf3+ Rxf3 {What a fight! Weighted Error Value: White=0.30/Black=0.26} ({ Weaker is} 69... Kxf3 70. Rxe1 Ra4 71. Kb7 $11) 0-1 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "4.2"] [White "Aronian, Levon"] [Black "Nakamura, Hikaru"] [Result "1/2-1/2"] [ECO "C70"] [WhiteElo "2781"] [BlackElo "2736"] [Annotator "TA"] [PlyCount "69"] [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 9,69,43,43,41,47,33,38,49,44,37,50,29,30,24,28,28,49,0,6,-16,-19,-10, -18,-6,-12,-30,-26,-35,-32,-40,-41,-45,-41,-43,-26,-25,-36,-14,-9,-9,-9,-9,-9, -9,-7,-8,-8,-10,-10,-10,-10,-10,0,-5,0,-10,0,-5,0,-10,0,-5]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 (3... Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nxe5 8. Rxe5 O-O 9. d4 Ne8 10. Re1 d5 11. Bf4 Bd6 12. Bxd6 Nxd6 13. Bd3 Bf5 14. Bxf5 Nxf5 15. c3 Re8 16. Nd2 c6 17. Rxe8+ Qxe8 18. Nf3 f6 19. Qc2 {1/2-1/2 (33) Aronian, L (2781)-Nakamura,H (2736) chess24.com INT 2020}) 4. Ba4 g6 5. c3 Bg7 6. d4 { C70: Ruy Lopez: 3...a6 4 Ba4, Norwegian and Delayed Schliemann.} b5 7. Bc2 { seems to push 7.Bb3 aside.} exd4 8. cxd4 {White is slightly better.} d5 9. exd5 Nce7 10. Nc3 Nf6 11. Bg5 O-O 12. O-O Nexd5 {[#]} 13. a4 $146 ({Predecessor:} 13. Be4 Be6 14. Ne5 Rc8 15. Qf3 c6 16. Rac1 Qd6 17. Nxd5 Nxd5 18. Bh4 Nb4 19. Qa3 Qxd4 20. Nxc6 Nxc6 {0-1 (20) Shirov,A (2662)-Nakamura,H (2736) Chess.com INT 2020}) 13... Bb7 14. axb5 Nxc3 15. bxc3 axb5 16. Rb1 Ra3 17. Rb3 Qa8 18. Re1 ({Much weaker is} 18. Rxb5 Ba6 $17) 18... Bd5 19. Rxa3 Qxa3 20. Qd2 Bxf3 21. gxf3 Nd5 22. Rb1 Qxc3 23. Be4 c6 {The position is equal.} (23... Qxd2 { seems wilder.} 24. Bxd2 Ne7 25. Rxb5 Bxd4 26. Bf4 c6) 24. Bxd5 Qxd2 25. Bxd2 cxd5 26. Rxb5 Bxd4 27. Rxd5 $11 {[%mdl 4096] Endgame KRB-KRB} Bf6 28. Bg5 Bxg5 29. Rxg5 {KR-KR} Ra8 30. Rd5 Rf8 31. Kg2 Ra8 32. Rd4 Rf8 33. Rd5 Ra8 34. Rd4 Rf8 35. Rd5 {Weighted Error Value: White=0.06/Black=0.04} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "4.3"] [White "So, Wesley"] [Black "Grischuk, Alexander"] [Result "1/2-1/2"] [ECO "C42"] [WhiteElo "2770"] [BlackElo "2777"] [Annotator "TA"] [PlyCount "75"] [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 21,75,18,21,18,22,19,19,19,15,15,16,25,18,16,26,16,11,14,18,10,14,8,7, 13,21,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-4,-4,-4,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6 9. Nc3 Nxc3 10. bxc3 dxc4 11. Bxc4 Bf5 12. Bg5 {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves.} Qa5 13. Nh4 Be6 14. Bxe6 {[#] Bf5 is the strong threat.} Qxg5 15. Nf3 Qa5 16. Bb3 Nd7 17. Qd3 Nf6 18. Rfe1 Rae8 {The position is equal.} 19. g3 g6 {[#]} 20. h4 $146 ({Predecessor:} 20. Kg2 Kg7 21. h4 h6 22. Nd2 Qd8 23. Qf3 Bc7 24. Rxe8 Qxe8 25. Rb1 Qe7 26. Bd1 {1/2-1/2 (41) Ochsner,B (2491)-Papp,G (2589) Denmark 2020}) 20... Kg7 21. Ng5 Qd8 22. Kg2 h6 23. Ne4 Nxe4 24. Rxe4 Rxe4 25. Qxe4 Re8 26. Qf3 Qf6 27. Qxf6+ Kxf6 $11 { [%mdl 4096] Endgame KRB-KRB} 28. Kf1 h5 29. Re1 Rxe1+ 30. Kxe1 {KB-KB} c5 31. dxc5 Bxc5 32. a4 a5 33. Ke2 b6 34. Bc4 Bd6 35. Bb5 Bc5 36. Bc4 Bd6 37. Bb5 Bc5 38. Bc4 {An uneventful encounter. Weighted Error Value: White=0.02/Black=0.01} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "4.4"] [White "Radjabov, Teimour"] [Black "Giri, Anish"] [Result "1/2-1/2"] [ECO "D38"] [WhiteElo "2765"] [BlackElo "2764"] [Annotator "TA"] [PlyCount "72"] [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 14,72,10,10,10,10,10,3,10,13,26,6,13,7,21,0,0,0,0,0,0,0,0,-8,0,-17,0,0, 0,-4,0,0,0,7,6,0,5,0,0,0,0,0,0,0,1,0,24,16,31,26,26,28,25,6,26,22,21,12,23,0, 16]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. Qa4+ (7. e3 O-O 8. Rc1 dxc4 9. Bxc4 c5 10. O-O cxd4 11. Nxd4 Bd7 12. Ne4 Qe7 13. a3 Ba5 14. Nf3 Bc6 15. Qc2 Nd7 16. Nd4 Bxe4 17. Qxe4 Nf6 18. Qb1 Rfd8 19. Rfd1 Bb6 20. Nf3 Rxd1+ 21. Rxd1 Rd8 22. g3 Rxd1+ 23. Qxd1 {1/2-1/2 (40) Radjabov,T (2765) -Giri,A (2764) chess24.com INT 2020}) 7... Nc6 8. e3 O-O {D38: Queen's Gambit Declined: Ragozin Defence (4 Nf3 Bb4).} 9. Be2 dxc4 10. O-O Bd7 11. Bxc4 Bxc3 12. bxc3 Rfd8 {Black wants to play ...Nxd4.} 13. Qa3 Qe7 14. Qb2 Na5 15. Be2 c5 16. Ne5 {[#]} Be8 $146 ({Predecessor:} 16... Rac8 17. Nxd7 Rxd7 18. Rfd1 cxd4 19. cxd4 Rdc7 20. Rac1 Nc4 21. Qb3 Nd6 22. Rxc7 Qxc7 {1/2-1/2 (102) Sjugirov,S (2657)-Dominguez Perez,L (2762) Budva 2019}) 17. Rfd1 Rac8 18. h3 Rc7 19. Bf1 cxd4 (19... b6 {seems wilder.} 20. Rdc1 Kh8 21. Bd3 Nc6 22. Nf3 e5) 20. cxd4 Rdc8 21. Rac1 Rxc1 22. Rxc1 Rxc1 23. Qxc1 Nc6 24. Nd3 Qd6 25. Qc3 b6 26. Be2 Ne7 27. Ne5 f6 28. Nd3 Kf8 29. Nf4 Bd7 30. Qc2 {[#] Threatens to win with Qh7.} e5 31. dxe5 fxe5 32. Nd3 Bf5 33. Qc3 Nc6 34. a3 Bg6 35. Nb4 Ne7 36. Nd3 Nc6 { Not much happened in this game. Weighted Error Value: White=0.05/Black=0.04} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "4.5"] [White "Harikrishna, Pentala"] [Black "Carlsen, Magnus"] [Result "1/2-1/2"] [ECO "B33"] [WhiteElo "2732"] [BlackElo "2862"] [Annotator "TA"] [PlyCount "48"] [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 23,48,10,0,0,0,0,0,0,16,14,34,21,40,45,63,39,31,0,0,0,0,0,0,0,7,0,0]} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 a5 13. g3 {B33: Sicilian: Pelikan and Sveshnikov Variations.} g6 14. Nxf6+ Qxf6 15. Bg2 O-O 16. O-O Qe7 $5 {[%mdl 4] Leaves trodden paths.} (16... Bb7 17. Qd2 Nb8 18. Rfd1 Ra6 19. Qe3 Nd7 20. a3 Rb6 21. axb4 axb4 22. Ra4 b3 23. Ne1 Nc5 24. Ra3 Ra6 25. Rxa6 Bxa6 { 0-1 (85) Harikrishna,P (2719)-Carlsen,M (2863) chess24.com INT 2020}) 17. b3 Be6 18. Qd2 {[#]} f6 $146 ({Predecessor:} 18... Rfd8 19. Rad1 f6 20. h4 Kg7 21. Kh2 h6 22. Bh3 Bxh3 23. Kxh3 f5 24. exf5 gxf5 {1/2-1/2 (35) Grigoriants,S (2541)-Lenic,L (2645) chess.com INT 2019}) 19. Rfd1 Rfd8 20. Qe3 Qa7 {The position is equal.} 21. Qh6 Qg7 22. Qe3 Qa7 23. Qh6 Qg7 24. Qe3 Qa7 {Weighted Error Value: White=0.06/Black=0.06} 1/2-1/2 [Event "Airthings Masters Preliminary"] [Site "Online"] [Date "2020.12.23"] [Round "4.6"] [White "Dubov, Daniil"] [Black "Anton Guijarro, David"] [Result "1-0"] [ECO "E04"] [WhiteElo "2699"] [BlackElo "2675"] [Annotator "TA"] [PlyCount "87"] [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 14,87,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,19,18,219,60,56,73,55, 61,88,76,218,208,193,200,242,159,283,247,431,414,374,0,638,635,627,630,608,610, 5670,4356,29956,29963,29960,29964,29960,29961,29968,29969,29960,29952,29970, 29974,29974,29975,29974,29971,29979,29980,29988,29981,29995,29996]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 c6 6. O-O b5 7. Ne5 Bb7 8. Nc3 a6 { E04: Open Catalan: 5 Nf3.} 9. b3 {9.b3 is better than 9.a4.} cxb3 10. axb3 Be7 {The position is equal.} 11. Bb2 O-O 12. Ne4 Nxe4 13. Bxe4 a5 14. Qc2 h6 {[#]} 15. Rfc1 $146 ({Predecessor:} 15. Rfd1 Bb4 16. Rdc1 Bd6 17. Qc3 Qc7 18. Nd3 b4 19. Qd2 Nd7 20. Qe3 Be7 21. h4 {1/2-1/2 (50) Ingersol,H (2427)-Quinones Borda, J (2204) ICCF email 2015}) 15... Bf6 16. Ng4 Bg5 (16... Bxd4 $2 17. Rd1 $18) 17. f4 f5 {Hoping for ...Be7.} 18. d5 fxe4 19. dxe6 Bf6 (19... Qb6+ $6 20. e3 $16) (19... h5 $11) 20. Nxf6+ $2 (20. Bxf6 $1 $18 Rxf6 21. Qxe4 (21. Nxf6+ Qxf6 22. Qxe4 Na6 $14)) 20... gxf6 $14 21. Qxe4 Qe7 22. f5 Na6 {Black is on the road to losing.} 23. Rxa5 h5 (23... Qg7 $16 {was necessary.}) 24. Qf3 $18 { [%mdl 1024] White has strong compensation.} Qh7 25. Rd1 $1 {[%CAl Rd1d7]} Rad8 26. Raa1 {Rxd8 is the strong threat.} Qh6 (26... Rxd1+ $16 27. Rxd1 Bc8 28. Qxc6 Qc7) 27. Kf2 {Strongly threatening e7.} Rd5 $2 (27... Qg7 {was worth a try.} 28. Qxh5 Rd5) 28. Rxd5 cxd5 {[#]} 29. Ra5 $2 ({White has to play} 29. Rxa6 $1 $18 {[%mdl 512]} Bxa6 30. Qxd5) 29... d4 $2 {[%mdl 8192]} 30. Qxb7 { [%mdl 64] Double Attack} Qe3+ 31. Kf1 d3 32. Qf3 ({Not} 32. Rxa6 $2 Qxe2+ 33. Kg1 d2 $19) (32. Qxa6 {leads to mate.} dxe2+ 33. Ke1 Rd8 34. Qd6 Rxd6 35. Bd4 Rxd4 36. Ra8+ Kh7 37. Ra7+ Kh6 38. Rd7 Qd2+ 39. Kf2 e1=Q+ 40. Kf3 Qh1#) 32... Qd2 33. Rxa6 Qxb2 34. Qxd3 {[%mdl 4096] Endgame KQR-KQR. White mates.} Rc8 35. e7 Re8 36. Re6 Kf7 37. Qf3 Qc1+ 38. Kg2 Qh6 39. Qd5 Kg7 40. Qxb5 Kf7 41. Qc4 Rxe7 42. Re4+ Ke8 43. Qg8+ Kd7 44. Rd4+ {Weighted Error Value: White=0.28/ Black=0.63} 1-0
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