[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.10"]
[Round "1.1"]
[White "Khachiyan, Melikset"]
[Black "Erenburg, Sergey"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "2493"]
[BlackElo "2581"]
[Annotator "TA"]
[PlyCount "141"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 31,141,7,6,16,17,15,22,24,37,25,25,23,33,27,20,16,22,11,43,33,69,79,72,66,72,72,106,108,101,114,123,122,122,122,122,119,114,122,123,112,109,105,123,114,102,102,102,102,120,114,173,173,173,173,173,173,164,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,1337,12714,29956,29957,29960,29951,29965,29966,29962,29967,29967,29968,29977,29966,29959,29961,29977,29978,29978,29979,29978,29979,29982,29980,29980,29981]} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. O-O-O Be7 13. Ne4 Nxe4 14. Qxe4 Nf6 15. Qe2 Qd5 16. c4 Qe4 17. Qxe4 {B19: Classical Caro-Kann: 4...Bf5 main line} Nxe4 18. Be3 O-O 19. Ne5 {The position is equal.} Rfd8 20. g4 a5 21. f3 Nd6 {[#]} 22. Rd3 $146 ({Predecessor:} 22. c5 Nb5 23. f4 Bf6 24. g5 hxg5 25. fxg5 Bxe5 26. dxe5 {1-0 (66) Sandipan,C (2560)-Shanava,K (2477) Pardubice 2005}) 22... f6 23. Ng6 $36 {[%mdl 2048] White is more active.} Kf7 24. Rc3 b5 25. c5 Ne8 26. Re1 Nc7 27. Rc2 $1 Nd5 28. Rce2 $1 Re8 29. Bd2 Bd8 30. f4 Bc7 31. f5 exf5 32. Rxe8 Rxe8 33. Rxe8 Kxe8 34. gxf5 $16 {[%mdl 4096] Endgame KBN-KBN} a4 35. Kc2 Bg3 36. Kd3 Kf7 37. Ke4 Ke8 38. Kf3 Bc7 39. Nh4 Bh2 40. Ng2 Bc7 {[#]} (40... Kd7 $16) 41. Ne1 $1 $18 Bh2 42. Nd3 Bc7 43. Ke4 Kd7 {[#]} 44. a3 ({White should play} 44. Nb4 $1 $18 {[%cal Rb4d5]} Ne7 45. d5) 44... Bh2 45. Nb4 Nxb4 46. Bxb4 $14 {KB-KB} Bg3 47. Bd2 Bh4 48. Kd3 Bg5 49. Be1 Bf4 50. Kc2 Be3 51. Bc3 Bf4 52. b3 axb3+ 53. Kxb3 Be3 54. a4 bxa4+ 55. Kxa4 Kc8 56. Kb3 Kd7 57. Kc4 {And now Kd3 would win.} Bf4 58. Kd3 {Threatens to win with Bd2.} Bg5 $2 {[%mdl 8192]} (58... Bg3 $14) 59. Ke4 $18 Bh4 60. Bd2 {White mates.} Bg5 61. Bf4 Ke8 62. Bd6 Bd2 63. d5 Kd7 64. Bf8 Bb4 65. Kd4 Bd2 66. Bxg7 cxd5 67. Kxd5 Ke7 68. c6 Bf4 69. Ke4 Bc1 {[#]} 70. Bf8+ $1 {[%mdl 512]} Ke8 (70... Kxf8 71. c7) 71. Bd6 {Accuracy: White = 90%, Black = 50%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.10"]
[Round "1.2"]
[White "Azarov, Sergei"]
[Black "Harutyunian, Tigran K."]
[Result "1/2-1/2"]
[ECO "C67"]
[WhiteElo "2586"]
[BlackElo "2542"]
[Annotator "TA"]
[PlyCount "143"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,143,20,22,37,39,31,31,33,34,33,30,41,36,37,27,27,32,43,39,35,21,29,22,23,29,39,29,45,33,47,36,47,39,40,50,43,47,38,41,44,40,54,36,40,45,46,12,26,19,12,18,27,27,68,43,74,72,66,65,95,91,201,202,179,93,82,0,0,0,117,104,150,149,141,23,29,0,0,-635,-621,-847,-612,-500,-163,-158,-174,-159,-172,-151,-154,-187,-187,-187,-187,-187,-187,-180,-187,-393,-183,-29978,-29979,-29974,-29974,-5727,-215,-215,-215,-215,-191,-215,-215,-215,-121,-29967,-191,-191,-14,-14,-14,-14,-14,-14,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Bf1 Nf5 {C67: Ruy Lopez: Berlin Defence: 4 0-0 Nxe4} 8. Nf3 O-O 9. d4 d5 {White is slightly better.} 10. c3 Re8 11. Bd3 Bd6 12. Rxe8+ Qxe8 13. Qc2 g6 14. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1e3][%mdl 32] [#]} Ng7 $146 ({Predecessor:} 14... Bd7 15. Nf1 {½-½ (30) Adams,M (2748)-Nakamura,H (2779) London 2016}) 15. Qb3 Ne7 16. Nf1 f6 17. c4 {Strongly threatening c5.} c6 18. Bd2 Qf7 19. Ne3 Ngf5 20. Re1 b6 21. cxd5 cxd5 22. Bb4 Bxb4 23. Qxb4 Be6 24. Nxf5 Nxf5 25. Bxf5 Bxf5 26. Qd6 Be4 $1 27. Nd2 Re8 28. Nf1 Re6 29. Qb4 Qd7 30. Ne3 Kg7 31. Rc1 g5 32. Qc3 Kf7 33. h3 Bg6 34. Qc7 Re7 35. Qb8 Kg7 36. Rc8 Bf7 (36... Qb7 $16 {keeps fighting.}) 37. Rd8 $18 (37. Rh8 $2 Be8 $19) 37... Qe6 38. Rxd5 (38. Rh8 Be8 $17) (38. Rd6 $18 Qe4 39. Qd8) 38... Kg6 $16 39. Qf8 (39. b3 $16) 39... Re8 $11 40. Qa3 Qe4 (40... Qc6 $1 $11 {keeps the balance.} 41. Rd6 Qc1+ 42. Kh2 Qd2) 41. Rd7 $16 Rc8 42. b3 h5 43. d5 ({Don't play} 43. Rxa7 $6 Qxd4 44. Qe7 Rc1+ 45. Nf1 Qd5 $16) (43. Qb2 $1 $16) 43... Qe5 $11 44. g3 Rc5 $1 45. Rxa7 $2 {[%mdl 8192]} (45. Qb4 $11 Bxd5 46. Nxd5 Rxd5 47. Rxd5 Qxd5 48. Qe7) 45... Bxd5 $19 46. Rd7 Qa1+ 47. Nf1 Be6 $2 (47... Bc6 48. Rd2 Qe1) 48. Qa7 {And now Rg7+ would win.} Bxd7 49. Qxd7 $17 {[%mdl 4096] Endgame KQR-KQN} Qe5 $1 ({Not} 49... Qxa2 50. Qe8+ Kh6 51. Qh8+ Kg6 52. Qe8+ Kh6 53. Qh8+ Kg6 54. Qe8+ $11) 50. Qd3+ Qf5 51. Qd8 Rc8 $36 {[%mdl 2048] Black is on the roll.} ({Worse is} 51... Qxh3 52. Qe8+ Kh6 53. Qf7 $11) 52. Qxb6 Qxh3 53. Qe3 h4 54. a4 Qf5 55. b4 $2 (55. Kh2 {was called for.}) 55... Qd5 (55... h3 $142 56. Qe2 Qd5) 56. b5 $2 (56. gxh4 $19 gxh4 57. Kh2) 56... h3 $1 {[%csl Gh3][%cal Rd5g2]} 57. f3 Qa2 {[%csl Gh3][%cal Ra2g2]} 58. Nd2 Qxa4 $2 (58... Rd8 59. Qe1 Qxd2 60. Qxd2 Rxd2) 59. Qd3+ $19 Kh6 $1 60. Kh2 Qc2 61. Qd6 Kg6 {Hoping for ...Re8.} 62. b6 {[#] intending b7.} Re8 (62... Qd1 $1 $19 {( -> ...Qe2+)} 63. Qd3+ Kh6) 63. Kxh3 $2 {[%mdl 8192] [#]} (63. b7 $17) 63... Qc8+ $2 (63... Qd1 $1 {mates} 64. Kg4 Qh1 65. Qd3+ Kh6 66. Kf5 Qh5 67. Kxf6 g4 68. f4 Rf8+ 69. Ke6 Qf7+ 70. Ke5 Qf6+ {[%mdl 64] Double Attack} 71. Ke4 Re8+ 72. Kd5 Rd8+ {[%mdl 64] Skewer} 73. Kc5 Rxd3 74. Nc4 Qd4+ 75. Kb5 Qd5+ 76. Kb4 Rd4 $1 {[%mdl 512]} 77. Kb3 Qxc4+ 78. Kb2 Rd2+ 79. Kb1 Qf1#) 64. g4 {[#]} Qb8 $2 (64... Rd8 $1 $19 65. Qc7 Qxc7 66. bxc7 Rc8) 65. Qd3+ $1 $11 {The position is equal.} Kh6 66. Ne4 Qxb6 {...Rd8 is the strong threat.} 67. Nd6 Rh8 {Threatens to win with ...Kg7+.} (67... Rb8 {is interesting.} 68. Nf5+ Kg6 69. Ng3+ Kg7 70. Qd7+ Kh8) 68. Nf7+ {[%mdl 64] Double Attack} Kg7+ 69. Nxh8 Kxh8 70. Qg6 Qd4 71. Qe8+ Kg7 72. Qe7+ {Accuracy: White = 54%, Black = 46%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.10"]
[Round "1.3"]
[White "Moradiabadi, Elshan"]
[Black "Perez Ponsa, Federico"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2552"]
[BlackElo "2560"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,60,35,40,31,40,35,50,53,85,21,85,80,74,75,76,76,72,91,88,29,66,14,39,39,49,20,44,41,46,36,34,35,26,25,33,43,57,40,43,25,55,29,82,61,78,69,68,68,77]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. h3 e5 7. d5 Nh5 8. g3 {E90: King's Indian: Classical: Early deviations and 6 h3} Na6 9. Nd2 Nc5 10. Nb3 $146 ({Predecessor:} 10. Be2 f5 11. exf5 Bxf5 12. Nb3 Ne4 13. Nxe4 Bxe4 14. Rh2 c6 15. Nd2 Qa5 {0-1 (30) Khairullin,I (2630)-Yuffa,D (2534) Sochi 2016}) 10... Nf6 11. Bg2 (11. Nxc5 $16 {Strongly threatening Nd3.} dxc5 12. Bg5) 11... Bd7 (11... Nfd7 $11) 12. Nxc5 $16 dxc5 13. Bg5 h6 14. Be3 b6 15. Qd2 Kh7 16. a3 (16. O-O-O $16) 16... a5 17. d6 (17. h4 $14) 17... Be6 18. dxc7 Qxc7 19. Nd5 (19. Qe2 {keeps more tension.} Ne8 20. O-O-O Nd6 21. Nd5 Qc6 22. f4) 19... Bxd5 20. cxd5 Ne8 21. Rc1 Nd6 22. h4 a4 23. h5 g5 24. Bh3 Qe7 25. Qc2 $36 {[%mdl 2048] White is more active.} Kh8 26. O-O Ra5 27. Rfd1 Bf6 (27... Nb5 $11 {remains equal.}) 28. Rb1 Rfa8 29. Bd2 R5a7 30. Qd3 Kg7 {Accuracy: White = 50%, Black = 31%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.10"]
[Round "1.4"]
[White "Wang, Justin"]
[Black "Yoo, Christopher Woojin"]
[Result "1-0"]
[ECO "B04"]
[WhiteElo "2459"]
[BlackElo "2449"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,115,45,34,41,47,50,37,42,37,52,38,36,36,41,43,41,29,33,29,35,18,19,23,53,40,49,45,40,36,92,90,90,79,83,86,90,90,100,100,142,108,229,108,145,139,212,212,240,235,240,232,238,235,233,230,239,231,226,231,234,233,216,128,143,135,214,206,232,231,230,212,256,239,239,235,482,492,973,941,1382,1233,1344,1344,1291,937,1274,1238,12834,12077,12842,12842,12845,12845,12845,12846,12846,12847,12847,12847,12847,12847]} 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. Ng5 e6 8. Qf3 Qe7 9. Ne4 $1 {Threatens to win with Bg5.} h6 {B04: Alekhine's Defence: 4 Nf3} 10. exd6 (10. Bf4 Nc6 11. exd6 Nxd4 12. dxe7 Nxf3+ 13. gxf3 Bxb2 14. Nbc3 Bxa1 15. Be5 f5 16. Bxh8 fxe4 17. Rg1 {0-1 (51) Pourramezanali,A (2528)-Firouzja,A (2618) Bushehr 2019}) 10... cxd6 11. Bf4 d5 {White is slightly better.} 12. Nd6+ Kf8 $146 ({Predecessor:} 12... Kd8 13. O-O g5 14. Be5 f6 15. Nxc8 Kxc8 16. Bxb8 Kxb8 17. Re1 {1-0 (27) Torre,E-Xu,H Hangzhou 1975}) 13. Nxc8 Nxc8 14. c3 Bf6 15. O-O Kg7 16. Re1 Qd8 17. h3 Nc6 18. Na3 Nd6 19. Nc2 a5 {next ...a4 is good for Black.} 20. a4 Bg5 21. Bh2 Ne4 {aiming for ...Nd2.} 22. Qe2 Ra6 (22... Bh4 $14 23. g3 Be7) 23. Na3 $16 Bh4 24. Rf1 Nd6 25. Nb5 Be7 26. Rfe1 Ne4 27. Bc2 Nf6 28. Qd3 Na7 {[#]} (28... Ne8 $16 {keeps fighting.} 29. Re2 h5) 29. Be5 (29. Nc7 $1 $18) 29... Nc6 30. Bf4 g5 (30... Ne4 $16 31. f3 Nf6) 31. Bh2 $18 Na7 32. Be5 Nc6 33. f4 Nxe5 34. fxe5 (34. dxe5 Bc5+ 35. Kh2 Nd7 $16) 34... Ne4 35. Qf3 Rc6 36. Bxe4 dxe4 37. Rxe4 Qd5 38. Rf1 $40 {[%csl Gf1][%cal Rf3f7][%mdl 128] White has strong attack.} Rf8 39. h4 (39. Qd3 $18) 39... f5 $16 40. Re2 Qxf3 (40... Qa2 $16) 41. gxf3 $18 ({Don't play} 41. Rxf3 $6 gxh4 42. b3 Rd8 $16) 41... gxh4 42. Kh2 Kh7 43. Rg2 Rcc8 44. Rfg1 {And now Rg7+ would win.} Bg5 45. Kh3 Rg8 $2 (45... Kh8 46. Rf1 f4) 46. Nd6 {White is clearly winning.} Rb8 {[#]} (46... f4 $142 47. Nxc8 Rxc8) 47. f4 $1 {[%mdl 512]} Bxf4 48. Rxg8 {[%mdl 64] Overworked Piece} Rxg8 49. Rxg8 Kxg8 50. Nxb7 {[%mdl 4096] Endgame KB-KN} Bc1 51. Nxa5 Bxb2 52. Nc6 Bxc3 53. a5 Bxa5 54. Nxa5 Kf7 55. Kxh4 Ke7 56. Nc6+ Kd7 57. Nb4 Kc7 58. Nd3 {Accuracy: White = 78%, Black = 35%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.10"]
[Round "1.5"]
[White "Cordova, Emilio"]
[Black "Sorokin, Aleksey"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2570"]
[BlackElo "2513"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,65,16,21,20,16,-2,0,0,2,6,17,2,27,0,29,0,26,18,27,27,25,0,0,0,27,21,30,9,8,0,26,8,80,80,94,94,93,93,98,95,122,95,98,77,108,65,77,52,58,48,75,72,64,20,22,31,38,39]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 d5 4. cxd5 Nxd5 5. e3 e6 6. Qc2 {A17: English Opening: 1...Nf6 with ...Bb4} (6. d4 cxd4 7. exd4 Nxc3 8. bxc3 Qc7 9. Bd2 Bd6 10. Bd3 Nd7 11. O-O O-O 12. a4 b6 13. Re1 Bb7 14. h3 Bf4 15. Bxf4 Qxf4 16. Qd2 Qc7 17. Ne5 Nxe5 18. Rxe5 Rac8 19. Re3 g6 20. Bf1 Rfd8 21. Qb2 Rd5 22. c4 {½-½ (38) Karjakin,S (2748)-Dubov,D (2700) Moscow 2019}) 6... Be7 7. b3 Nxc3 8. dxc3 {The position is equal.} Nc6 $146 ({Predecessor:} 8... Qc7 9. Bb2 Nd7 10. Bd3 h6 11. O-O-O b6 12. Bc4 O-O 13. h4 Bb7 {1-0 (30) Ganguly,S (2622)-Wagner,D (2572) Douglas 2018}) 9. Bb2 Bd7 10. Bd3 h6 11. a3 Qc7 12. O-O Bf6 13. Nd2 Ne5 14. Be2 Bc6 15. f4 Nd7 16. b4 $36 {[%cal Bb3b4,Bb4b5][%mdl 2080] [#] Threatens to win with b5. White has some pressure.} b6 17. b5 Bb7 18. a4 O-O 19. Nc4 Rad8 20. Rad1 Bd5 (20... Be7 $11 {remains equal.}) 21. e4 $16 Bxc4 22. Bxc4 e5 {[#]} 23. g3 $1 Be7 24. Bc1 Nf6 25. Rde1 Bd6 26. Qg2 Kh8 27. f5 Be7 28. g4 Nh7 $1 29. Qg3 Bf6 30. Bd5 Qe7 {Threatening ...Bh4.} 31. Rd1 Bh4 32. Qh3 Bg5 33. c4 {Accuracy: White = 58%, Black = 43%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.11"]
[Round "2.1"]
[White "Erenburg, Sergey"]
[Black "Sorokin, Aleksey"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2581"]
[BlackElo "2513"]
[Annotator "TA"]
[PlyCount "64"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,120,43,28,25,25,18,22,5,13,20,12,25,14,12,23,16,10,20,0,-15,0,-20,-94,-109,-130,-123,-118,-140,-147,-116,-125,-87,-92,-85,-100,-96,-116,-116,-122,-125,-117,-117,-120,-118,-130,-141,-131,-131,-139,-102,-111,-113,-141,-132,-130,0,-124,-129,-152,-134,-164,-147,-154,-148,-138,-158,-157,-149,-134,0,-143,-154,-149,-151,-155,-61,-68,-57,-55,-46,-46,-48,-52,-51,-97,-77,-84,-23,-25,-26,-122,-123,-124,-34,-186,-186,-268,-248,-188,-76,-137,-8,-8,-8,-1659,-804,-4440,-4132,-29970,-29938]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. c3 b5 7. Bc2 d5 {C78: Ruy Lopez: Archangelsk and Möller Defences} 8. exd5 (8. d4 dxe4 9. Nxe5 Nxe5 10. dxc5 Qe7 11. Bxe4 Nxe4 12. Qd5 Nxc5 13. Qxa8 O-O 14. Be3 Ncd3 15. Nd2 {0-1 (28) Swiercz,D (2656)-Hammer,J (2662) Saint Louis 2018}) 8... Qxd5 {[#]} 9. d4 $1 {[%mdl 512]} exd4 {The position is equal.} 10. Bb3 Qd6 11. Re1+ Kf8 12. Bg5 Bb7 13. Nbd2 {Hoping for Bxf6.} dxc3 14. bxc3 Na5 $146 ({Predecessor:} 14... Rd8 15. Qc2 {0-1 (54) Zibaei,A (2067)-Lane,G (2371) Canberra 2009}) 15. Bc2 h6 16. Bh4 g6 $36 {[%mdl 2048] Black has the initiative.} 17. Ne5 (17. Nc4 $11 {remains equal.} Bxf2+ 18. Kxf2 Ng4+ {[%mdl 64] Double Attack} 19. Kg1 Qxd1 20. Raxd1 Nxc4 21. Bb3) 17... Kg7 $1 $17 18. Nb3 Nxb3 19. Bxb3 Rhe8 20. Bg3 Qxd1 21. Raxd1 Re7 22. Nd3 Rxe1+ 23. Rxe1 Bd6 24. Bxd6 cxd6 25. c4 bxc4 26. Bxc4 Rc8 27. Bb3 Bd5 28. Rd1 Bxb3 29. axb3 {[%mdl 4096] Endgame KRN-KRN} Rc3 30. b4 Kf8 31. Kf1 Ke7 32. Nf4 Ra3 {Played: Rc3-c4} 0-1

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.11"]
[Round "2.2"]
[White "Yoo, Christopher Woojin"]
[Black "Cordova, Emilio"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2449"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "89"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,89,25,23,24,13,138,136,140,150,146,142,144,143,141,147,165,160,163,161,183,185,172,175,172,167,179,164,167,170,163,170,169,142,172,172,171,174,173,176,204,204,197,173,178,173,173,174,164,147,166,146,235,243,225,234,257,275,293,288,346,346,401,325,579,457,520,473,629,606,598,591,779,756,875,846,924,974,961,947,820,515]} 1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Qe2 Nxe4 6. Qxe4 Qd5 {B11: Caro-Kann: Two Knights Variation} (6... Qa5 7. Qh4 Nd7 8. Bc4 Ne5 9. Be2 Nxf3+ 10. Bxf3 Bf5 11. O-O Bxc2 12. d4 e6 13. Qg3 Bg6 14. h4 {1-0 (48) Wei,Y (2721)-Vachier Lagrave,M (2774) chess.com INT 2019}) 7. Qf4 Bf5 (7... Qf5 $11 8. Qe3 Qxc2) 8. Bc4 $16 Qe4+ {White is clearly better.} 9. Qxe4 Bxe4 10. Bxf7+ $1 {[%mdl 64] [#] Decoy} Kxf7 11. Ng5+ {[%mdl 64] Double Attack} Kg6 12. Nxe4 e5 13. h4 h5 $146 ({Predecessor:} 13... Nd7 14. h5+ {1-0 (47) Perunovic,M (2435)-Jovanovic,S (2248) Banja Vrujci 2017}) 14. Rh3 Nd7 15. Rg3+ Kf7 16. Ng5+ Kg8 17. d3 Re8 18. Ne4 Kf7 19. Bg5 Nf6 20. O-O-O Be7 21. Rf1 Ke6 22. Re1 Kd7 23. Nd2 Bd6 24. Nc4 Bb8 25. Rge3 Ng4 26. R3e2 b5 27. Nd2 Rhf8 28. Ne4 Nf6 29. Ng3 Rf7 30. Bxf6 Rxf6 (30... gxf6 $16 31. Nxh5 Rg8) 31. Nxh5 $18 Rh6 {[#]} 32. g4 $1 ({Don't do} 32. Nxg7 $6 Rf8 $16) 32... Rf8 33. d4 ({Weaker is} 33. Nxg7 Rxh4 34. Nf5 Rxg4 $16) 33... Rg6 34. Re4 ({Less strong is} 34. dxe5 Rxg4 35. e6+ Ke7 $16) 34... Rxf2 35. dxe5 c5 36. g5 Bc7 $2 (36... Ke7 37. Rd1 Rf5) 37. Nf4 {White is clearly winning.} Rc6 38. e6+ Ke8 39. Nh5 Ke7 40. Nxg7 c4 41. g6 {aiming for Nf5+!} Bf4+ 42. Kb1 Bh6 43. Rd4 {White wants to mate with Rd7+.} Rc7 44. Nh5 Ke8 45. Rd7 {Accuracy: White = 80%, Black = 56%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.11"]
[Round "2.3"]
[White "Perez Ponsa, Federico"]
[Black "Wang, Justin"]
[Result "1-0"]
[ECO "E35"]
[WhiteElo "2560"]
[BlackElo "2459"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,129,16,1,22,18,41,5,6,0,24,23,23,27,26,27,27,23,31,23,39,51,38,26,20,22,39,24,15,23,37,23,33,0,14,0,0,0,36,0,18,18,18,8,18,-10,0,0,0,0,20,7,14,16,52,52,52,59,71,79,103,0,108,132,135,21,20,31,310,314,331,335,329,241,375,350,346,352,343,335,350,333,373,345,340,331,323,325,313,325,419,397,452,431,445,423,450,445,445,436,450,452,434,447,433,415,473,479,522,517,1281,893,1082,478,888,945,1419,1365,4778,2047]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 h6 7. Bh4 Be6 {E35: Nimzo-Indian: Classical: 4...d5 5 cxd5 exd5} (7... O-O 8. e3 c5 9. dxc5 Be6 10. Nf3 Nbd7 11. Be2 Rc8 12. c6 Rxc6 13. Nd4 Rc8 14. O-O Qe7 15. Qb3 Bxc3 16. bxc3 Nc5 17. Bxf6 Qxf6 18. Qb4 b6 19. a4 Qg6 20. a5 Ne4 21. Nxe6 Qxe6 {½-½ (21) Howell,D (2697)-Adams,M (2690) Torquay 2019}) 8. e3 Nbd7 {[%cal Bb8d7,Bd7c5,Bc5e4][%mdl 32]} 9. Nf3 O-O {The position is equal.} 10. Bd3 Re8 11. a3 Be7 12. h3 $146 ({Predecessor:} 12. O-O c6 13. Bg3 Nh5 14. Be5 Bg4 15. Ne1 Nxe5 16. dxe5 {½-½ (46) Ponomarjov,R (2219)-Dmitriev,V (2288) ICCF email 2010}) 12... c5 13. dxc5 Nxc5 14. O-O Rc8 15. Nd4 Nce4 16. Nxe6 fxe6 17. Bxf6 Nxf6 18. Rad1 Bd6 19. Qd2 Be5 20. Ne2 Bc7 21. Bb1 Qd6 {[%csl Gc7][%cal Rd6h2]} 22. Ng3 (22. g3 {with more complications.} Qd7 23. Bg6 Red8 24. Nd4 Bb6 25. Qd3) 22... Bb6 23. Qd3 Qe5 24. Rd2 h5 25. Rfd1 h4 26. Nf1 Ne4 27. Re2 $1 Rf8 28. Qb3 Qh5 29. Qd3 Bc7 30. Rc2 Bb8 {White should prevent ...Rxc2.} 31. Qe2 Qxe2 32. Rxe2 Nf6 33. Nd2 g5 34. Nf3 g4 35. hxg4 Nxg4 {[#]} 36. Nxh4 ({White should try} 36. e4 $1 $16) 36... Kg7 (36... Bh2+ $1 $11 {keeps the balance.} 37. Kf1 Bg3) 37. g3 $16 a5 38. Ng6 (38. Rde1 $16) 38... Rf6 $1 $11 39. Nf4 $36 {[%mdl 2048] Threatens to win with Nh5+. White fights for an advantage.} Rh6 $2 {[%mdl 8192] [#]} (39... Rh8 $14) 40. Nxe6+ $1 $18 {[%mdl 512]} Kf6 (40... Rxe6 41. Bf5) 41. Nf4 d4 42. Be4 ({Resist} 42. exd4 $6 Bxf4 43. gxf4 Rg8 $18) 42... Kg7 (42... dxe3 {was called for.} 43. Nd5+ (43. fxe3 b6 $18) (43. Bxb7 exf2+ 44. Kg2 Bxf4 $11) 43... Kf7) 43. Bf5 Rch8 {aiming for ...Rh1+.} 44. Rxd4 Rh1+ 45. Kg2 R1h2+ 46. Kf3 Ne5+ 47. Ke4 Re8 48. Rd8 {[%mdl 64] Deflection, Decoy} Rxd8 49. Ne6+ {[%mdl 64] Double Attack} Kf6 {Hoping for ...Re8.} 50. Nxd8 Rh8 51. Ne6 Re8 52. g4 Nf7 53. Kd5 Re7 54. f4 Rd7+ 55. Ke4 Nd6+ 56. Kf3 Nxf5 57. gxf5 Kxf5 {[%mdl 4096] Endgame KRB-KRN} 58. Nd4+ Kf6 59. Rh2 {White is clearly winning.} Kg6 60. Kg4 Rg7 (60... b5 $142 61. Nxb5 Re7) 61. Nf5 Rd7 62. Rh6+ Kf7 63. e4 Rd2 64. Rh7+ Kg8 65. Rxb7 {Accuracy: White = 72%, Black = 41%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.11"]
[Round "2.4"]
[White "Harutyunian, Tigran K."]
[Black "Moradiabadi, Elshan"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2542"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,71,33,27,31,22,16,14,12,13,23,18,30,29,43,42,52,43,45,46,53,42,94,96,76,85,81,86,113,111,111,111,121,106,151,151,194,205,269,266,361,359,837,809,756,709,632,635,571,641,612,620,630,626,964,925]} 1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Bf5 7. Qf3 Bg6 8. Bxf6 Qxf6 9. Qxf6 gxf6 10. Nf3 Nd7 {D35: Queen's Gambit Declined: Exchange Variation} 11. Nh4 Nb6 12. f4 h5 {The position is equal.} 13. Kf2 {[#]} Kd7 $146 ({Predecessor:} 13... Nc8 14. f5 Bh7 15. h3 Nd6 16. g4 Kd7 17. Bd3 Bh6 18. Ng2 {1-0 (37) Bluebaum,M (2632)-Naiditsch,A (2700) Minsk 2017}) 14. Be2 Ke6 15. h3 f5 16. g4 hxg4 17. hxg4 Be7 18. g5 Rag8 19. Bd3 Nc8 ({Black should play} 19... Nc4 $14) 20. Na4 $1 $16 ({Of course not} 20. Nxg6 $6 fxg6 21. Kf3 Nd6 $11) 20... Nb6 21. Nc5+ Bxc5 22. dxc5 Nc4 23. Bxc4 dxc4 24. Rac1 Rd8 25. Rxc4 Rd2+ {[#]} 26. Kg3 $1 Kd5 27. Rc3 b5 28. Rhc1 b4 {[#]} 29. Rb3 $1 a5 $2 (29... Bh5 30. Rxb4 (30. Nxf5 a5 $16) 30... Ke6) 30. Nf3 $18 {White is clearly winning.} Re2 31. Rd3+ Ke4 32. Ne5 {[%cal Rc1c4]} Rxe3+ 33. Rxe3+ Kxe3 34. Nxc6 Kd2 35. Rc4 Rh1 36. Ne5 {Accuracy: White = 94%, Black = 38%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.11"]
[Round "2.5"]
[White "Khachiyan, Melikset"]
[Black "Azarov, Sergei"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2493"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "45"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,45,12,17,11,6,7,12,0,18,0,0,-11,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-45,0,0,0,-45,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a5 7. a4 O-O 8. Nbd2 {[%cal Bb1d2,Bd2f1,Bf1g3][%mdl 32] C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} h6 (8... Ba7 9. h3 Ne7 10. Re1 Ng6 11. Nf1 Re8 12. Ng3 Be6 13. Bxe6 Rxe6 14. Qb3 Nd7 15. d4 h6 16. Qxb7 {0-1 (29) Wang,H (2735)-Andreikin,D (2722) Hengshui 2019}) 9. Re1 Be6 10. Qb3 Qd7 11. Nf1 Bxc4 12. Qxc4 Rfe8 $146 ({Predecessor:} 12... Ba7 13. Be3 Ne7 14. Ng3 Bxe3 15. fxe3 Ng6 {½-½ (48) Jones,G (2622)-Cheparinov,I (2629) Hengshui 2019}) 13. Be3 b6 14. Ng3 Bxe3 15. Rxe3 d5 16. exd5 Nxd5 17. Re4 Re6 18. Rae1 {[%cal Rf3e5]} Rae8 19. h3 Nf4 20. R4e3 Nd5 21. Re4 Nf4 22. R4e3 Nd5 23. Re4 {Accuracy: White = 60%, Black = 62%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.12"]
[Round "3.1"]
[White "Azarov, Sergei"]
[Black "Erenburg, Sergey"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2586"]
[BlackElo "2581"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,115,21,37,0,9,13,9,0,21,28,18,14,13,20,16,24,20,0,0,2,28,23,25,25,25,28,28,0,2,7,0,17,8,0,23,23,51,37,52,39,59,49,47,57,120,119,125,0,0,0,127,126,142,142,127,141,138,122,135,137,153,153,154,154,153,153,154,150,207,207,255,109,201,185,171,170,163,143,472,468,468,468,663,662,644,637,891,931,913,861,838,803,1417,1359,1269,1201,1944,1885,1593,1421,12833,12833,12831,9266,12837,12838,12839,12839]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. Nbd2 {B12: Caro-Kann: Advance Variation} c5 7. dxc5 Nec6 8. Nb3 {The position is equal.} Bxc5 {[%mdl 64] [#] Decoy} 9. Nxc5 Qa5+ 10. c3 Qxc5 11. Be3 Qe7 12. b4 b6 $146 ({Predecessor:} 12... Nd7 13. Bg5 f6 14. exf6 Nxf6 {1-0 (42) Grischuk,A (2752)-Laznicka,V (2703) Porto Carras 2011}) 13. h3 O-O 14. O-O Qc7 15. Bf4 Nd7 {[%cal Rc6e5]} 16. Nd4 Be4 17. Bb5 Ne7 18. Rc1 a6 19. Be2 b5 20. a4 bxa4 $1 21. Qxa4 Nb6 22. Qa5 Nc6 23. Qc5 Nxd4 $1 24. Qxd4 Rfc8 25. c4 {cxd5 is the strong threat.} Qb7 $1 26. c5 Nc4 ({Better is} 26... Nd7 $1 $14) 27. Rfd1 $16 Na3 28. Qb2 (28. f3 $16 Bc2 29. Rd2) 28... Nc4 $1 $11 {[%cal Rc4b2]} 29. Qd4 (29. Qb3 $11 Rxc5 30. f3) 29... Na3 $1 $16 30. f3 Bg6 {[#]} 31. Qb2 $1 $36 {[%cal Rb2a3][%mdl 2048] White is on the roll.} Nb5 32. Ra1 h6 33. Be3 Nc7 34. Rdc1 Qc6 35. Ra5 Rcb8 36. Rca1 Qb7 37. Bd2 Qc6 38. Qa3 d4 (38... Kf8 $16 39. Kf2 (39. Bxa6 Nxa6 40. Rxa6 Rxa6 $16) 39... Ke8 40. Bxa6 Nxa6) 39. Bxa6 $18 Qd5 40. Bf1 (40. b5 $18) 40... Qxe5 (40... Rxa5 $16 {was called for.} 41. bxa5 d3) 41. Rxa8 Rxa8 42. Qc1 {Threatens to win with Rxa8+.} Rxa1 43. Qxa1 Bc2 $2 {[%mdl 8192]} (43... f6 $16 {is a better chance.} 44. Qc1 Nd5) 44. f4 {White is clearly winning.} Qe4 45. b5 {[%cal Bb4b5,Bb5b6,Bb6b7][%mdl 32]} d3 (45... Nxb5 $142 46. Bxb5 Qd5) 46. b6 Nb5 47. Qe5 Qxe5 48. fxe5 {[%mdl 4096] Endgame KBB-KBN} Nd4 49. b7 Nc6 50. g4 {aiming for Bg2.} Nb8 51. Bg2 Ba4 52. Kf2 Kf8 53. c6 Bxc6 54. Bb4+ Ke8 55. Bxc6+ Nxc6 56. Bd6 f5 57. exf6 gxf6 58. Ke3 {Accuracy: White = 81%, Black = 44%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.12"]
[Round "3.2"]
[White "Moradiabadi, Elshan"]
[Black "Khachiyan, Melikset"]
[Result "1/2-1/2"]
[ECO "C75"]
[WhiteElo "2552"]
[BlackElo "2493"]
[Annotator "RC"]
[PlyCount "75"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:01:15]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:08]} 3. Bb5 {[%emt 0:00:00]} a6 {[%emt 0:00:19]} 4. Ba4 {[%emt 0:00:00]} Nge7 {[%emt 0:01:53]} 5. c3 {[%emt 0:05:47]} d6 {[%emt 0:01:48]} 6. d4 {[%emt 0:00:28]} Bd7 {[%emt 0:00:04]} 7. d5 {[%emt 0:02:06]} Nb8 {[%emt 0:00:08]} 8. c4 {[%emt 0:00:03]} Ng6 {[%emt 0:00:20]} 9. Nc3 {[%emt 0:00:47]} Be7 {[%emt 0:00:07]} 10. Be3 {[%emt 0:00:34]} h6 {[%emt 0:00:21]} 11. Bxd7+ {[%emt 0:01:12]} Nxd7 {[%emt 0:00:13]} 12. g3 {[%emt 0:00:07]} O-O {[%emt 0:05:35]} 13. h4 {[%emt 0:00:55]} f5 {[%emt 0:08:18]} 14. exf5 {[%emt 0:01:13]} Rxf5 {[%emt 0:00:07]} 15. h5 {[%emt 0:00:21]} Ngf8 {[%emt 0:01:01]} 16. Ne4 {[%emt 0:08:26]} Rf7 {[%emt 0:02:29]} 17. Nfd2 {[%emt 0:05:23]} Nh7 {[%emt 0:03:00]} 18. Qg4 {[%emt 0:00:28]} Bg5 {[%emt 0:08:02]} 19. f4 {[%emt 0:24:36]} exf4 {[%emt 0:08:29]} 20. gxf4 {[%emt 0:00:02]} Ne5 {[%emt 0:00:10]} 21. fxe5 {[%emt 0:06:30]} Bxe3 {[%emt 0:00:21]} 22. e6 {[%emt 0:00:04]} Rf4 {[%emt 0:00:04]} 23. Qg3 {[%emt 0:00:07]} Bxd2+ {[%emt 0:00:14]} 24. Nxd2 {[%emt 0:00:06]} Qg5 {[%emt 0:01:37]} 25. Qxg5 {[%emt 0:02:29]} Nxg5 {[%emt 0:00:07]} 26. Ke2 {[%emt 0:00:03]} c6 {[%emt 0:09:17]} 27. Raf1 {[%emt 0:03:35]} Rg4 {[%emt 0:00:32]} 28. Rfg1 {[%emt 0:09:05]} Rf4 {[%emt 0:05:12]} 29. Rf1 {[%emt 0:04:59]} Rg4 {[%emt 0:00:05]} 30. Rhg1 {[%emt 0:00:02]} Rh4 {[%emt 0:13:59]} 31. Nf3 {[%emt 0:00:10]} Nxf3 {[%emt 0:02:28]} 32. Rxf3 {[%emt 0:00:00]} Rxh5 {[%emt 0:03:30]} 33. Rf7 {[%emt 0:00:18]} Re5+ {[%emt 0:00:05]} 34. Kd3 {[%emt 0:09:56]} g5 {[%emt 0:00:17]} 35. Rgf1 {[%emt 0:00:07]} Re8 {[%emt 0:01:52]} 36. Kd4 {[%emt 0:00:01]} g4 {[%emt 0:12:39]} 37. R1f6 {[%emt 0:04:33]} Rg5 {[%emt 0:02:57]} 38. e7 {[%emt 0:07:27]} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.12"]
[Round "3.3"]
[White "Wang, Justin"]
[Black "Harutyunian, Tigran K."]
[Result "1/2-1/2"]
[ECO "C89"]
[WhiteElo "2459"]
[BlackElo "2542"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 26,111,34,18,24,35,32,24,34,31,23,16,12,11,30,0,4,0,0,0,0,-8,-14,-11,-8,-7,-5,-30,-9,-6,-6,-6,8,-18,-9,-34,-33,-49,-43,-53,-47,-51,-60,-66,-62,-61,-61,-66,-59,-53,-58,-58,-32,-53,-24,-62,-4,-21,-14,-16,-17,-26,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d3 Bd6 13. Re1 Bf5 14. Qf3 Qh4 {C89: Closed Ruy Lopez: Marshall Attack} 15. g3 Qh3 16. Be3 Bxd3 {White has an edge.} ({Much weaker is} 16... Nxe3 17. Rxe3 Rac8 18. Nd2 $16) 17. Nd2 {[%cal Bb1d2,Bd2e4,Be4g5][%mdl 32]} Bf5 18. Bd4 {[#]} Rfd8 $146 ({Predecessor:} 18... Rfe8 19. a4 Bg4 20. Qg2 Qh5 21. f3 Be6 22. Ne4 {½-½ (69) Inarkiev,E (2693)-Tomashevsky,E (2718) Mali Losinj 2019}) 19. Ne4 Bf8 20. Ng5 Qg4 21. Qxg4 Bxg4 22. f3 Bh5 23. Kg2 c5 24. Bf2 h6 25. Nh3 Bg6 26. Rac1 c4 27. Bc2 Bxc2 28. Rxc2 Rd7 29. a3 Rad8 30. Ree2 g5 $36 {[%mdl 2048] Black has good play.} 31. Bd4 Bg7 32. Bxg7 Kxg7 33. Nf2 f5 34. Re5 Re7 35. Rxe7+ Nxe7 $15 {[%mdl 4096] Endgame KRN-KRN} 36. Kf1 Nd5 {[#] Hoping for ...Ne3+.} 37. Re2 Kf6 38. Ke1 h5 39. Nd1 f4 40. Rd2 Re8+ (40... Rd7 $15) 41. Kf2 Re5 42. Rd4 Kf5 43. a4 g4 44. axb5 {The position is equal.} axb5 45. Rd2 Kg5 46. Rd4 Rf5 {[#] ...fxg3+ is the strong threat.} 47. Kg2 fxg3 {Strongly threatening ...Nf4+.} 48. fxg4 Nf4+ 49. Kxg3 hxg4 {Threatens to win with ...Ne2+.} 50. Re4 Nh5+ 51. Kg2 Rf3 52. Ne3 Nf4+ 53. Kg1 Nh3+ 54. Kg2 Nf4+ 55. Kg1 Nh3+ 56. Kg2 {Accuracy: White = 62%, Black = 64%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.12"]
[Round "3.4"]
[White "Cordova, Emilio"]
[Black "Perez Ponsa, Federico"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2570"]
[BlackElo "2560"]
[Annotator "TA"]
[PlyCount "109"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,109,33,28,44,31,31,10,11,8,28,18,28,20,31,21,35,21,36,0,26,16,35,-9,-15,-16,-19,-11,-5,-62,-58,-27,-11,-24,0,-42,-8,-2,-9,-14,-10,-10,-11,-59,-59,-59,-56,-44,-37,-46,-51,-41,-49,-49,-39,-75,-74,-80,-77,-77,-80,-79,-78,-85,-49,-48,-47,-45,-47,-47,-39,-39,-42,-44,-44,-44,-37,-37,-10,-7,0,-38,-38,-38,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. d4 Nc6 7. O-O e5 8. d5 Nb8 9. e4 a5 {E62: King's Indian: Fianchetto: 6...c6 and Panno Variation (6...Nc6) without ...a6} 10. b3 (10. h3 Na6 11. Be3 Nh5 12. Ne1 Qe8 13. Kh2 f5 14. Bf3 Nf6 15. Nd3 fxe4 16. Bxe4 b5 17. cxb5 Nxe4 18. Nxe4 Qxb5 19. Nc3 {0-1 (45) Lenderman,A (2640)-Xiong,J (2691) Philadelphia 2019}) 10... Na6 11. Re1 Bd7 $146 ({Predecessor:} 11... Nc5 12. Qc2 Bd7 13. Bg5 Qe8 14. Nh4 Nh5 15. Be3 b6 16. Qd2 Qe7 17. Rab1 {1-0 (55) Yurasova,D (2182)-Lisin,E (1896) St Petersburg 2019}) 12. Rb1 Qe7 13. Bg5 h6 14. Bd2 Nc5 15. Qc2 Nh7 16. Be3 Ng5 17. Nh4 Nh3+ 18. Kh1 Nf4 19. Nf5 gxf5 20. gxf4 exf4 21. Bxf4 Rae8 22. Qd2 (22. f3 $11) 22... Qf6 $15 23. Rbc1 Re7 24. f3 (24. e5 $5 dxe5 25. Be3 $11) 24... Rfe8 25. Bg3 Qd4 26. Qxd4 Bxd4 27. Red1 Bxc3 28. Rxc3 fxe4 29. Bh4 exf3 30. Bxf3 Re3 31. Rg1+ Kh7 32. Bf6 {[#] Black must now prevent Rxe3.} Re1 33. Rxe1 Rxe1+ 34. Kg2 Re8 35. a3 Bf5 36. b4 axb4 37. axb4 Nd3 38. c5 Kg6 39. Bd4 Nxb4 40. cxd6 cxd6 41. Rb3 Nc2 42. Bf2 Ne1+ 43. Bxe1 $1 Rxe1 {[%mdl 4096] Endgame KRB-KRB} 44. Rb6 Rb1 45. Rxd6+ Kg5 {Threatens to win with ...Bg6.} 46. Kg3 {[%csl Gg3][%cal Rh2h4] [#]} Rg1+ 47. Kf2 $132 {[%mdl 2048] White is not holding back} Rb1 48. Kg3 {[%csl Gg3][%cal Rh2h4]} Rb4 49. Rd8 $1 h5 50. h4+ {The position is equal.} Rxh4 51. Rg8+ Bg6 {And now ...Rd4 would win.} 52. Bxh5 $1 Rd4 53. Bxg6 fxg6 54. Rb8 $1 Rxd5 {Strongly threatening ...Rd3+.} 55. Rxb7 {Accuracy: White = 59%, Black = 60%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.12"]
[Round "3.5"]
[White "Sorokin, Aleksey"]
[Black "Yoo, Christopher Woojin"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2513"]
[BlackElo "2449"]
[Annotator "TA"]
[PlyCount "77"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 21,77,0,9,22,28,21,30,0,0,0,17,0,0,0,0,0,0,0,0,0,25,25,99,97,175,179,185,180,162,170,264,267,271,272,270,270,304,298,295,267,263,261,251,242,406,408,463,463,462,456,523,502,610,614,609,557,538,526]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Be3 Qa5 9. Qd2 O-O 10. Rc1 Rd8 11. d5 e6 12. Bg5 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3} Rd6 13. Bf4 Rd8 14. Be2 {White has an edge.} exd5 15. exd5 b5 16. c4 Qxd2+ 17. Nxd2 bxc4 $146 ({Predecessor:} 17... Bb7 18. cxb5 Bxd5 19. O-O Bxa2 20. Nc4 Nd7 21. Bf3 a6 22. Bxa8 Bxc4 23. Rxc4 {½-½ (25) Khenkin,I (2648)-Sevdimaliyev,U (2325) Baku 2012}) 18. Nxc4 Bb7 19. Ne3 $36 {[%mdl 2048] Black is under pressure.} Bd4 20. O-O Nd7 21. Bc7 Re8 (21... Rdc8 $11 {remains equal.} 22. Bf4 Nf6) 22. Bb5 $16 Rxe3 (22... Re4 $16) 23. fxe3 $18 Bxe3+ 24. Kh1 {And now Rce1 would win.} Bxc1 25. Rxc1 Re8 (25... Nf8 $142) 26. Bxd7 Re7 27. Bb5 Bxd5 28. Bd6 Rb7 29. a4 a6 30. Be2 ({Less strong is} 30. Rxc5 axb5 31. Rxd5 bxa4 $16) ({Inferior is} 30. Bxa6 Rb6 $11) 30... Rb4 31. Bd1 Rb2 32. Bf3 Bb3 $2 {[#]} (32... Bxf3 33. gxf3 Rd2) 33. Be5 Rc2 34. Rxc2 {White is clearly winning.} Bxc2 35. a5 Bb3 36. Bf6 Kf8 37. Bc6 h6 38. Kg1 g5 39. Kf2 {Accuracy: White = 94%, Black = 38%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.13"]
[Round "4.1"]
[White "Erenburg, Sergey"]
[Black "Yoo, Christopher Woojin"]
[Result "1-0"]
[ECO "B04"]
[WhiteElo "2581"]
[BlackElo "2449"]
[Annotator "TA"]
[PlyCount "93"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,93,27,40,37,37,44,26,35,27,47,0,0,0,0,0,21,26,27,0,15,7,38,0,0,0,0,0,4,-44,0,-37,0,0,26,-32,8,1,3,-54,-82,-75,20,5,10,0,0,0,10,0,5,6,9,10,5,6,7,4,4,5,6,6,275,270,448,416,697,687,632,627,29977,29978,29978,29979,29979,29980,29979,29979]} 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. Qe2 O-O 8. h3 c5 9. dxc5 dxc5 10. O-O c4 {B04: Alekhine's Defence: 4 Nf3} (10... Nc6 11. e6 Bxe6 12. Bxe6 fxe6 13. Qxe6+ Kh8 14. c3 Qd5 15. Qxd5 Nxd5 16. Nbd2 Nf4 17. Ne4 Nd3 18. Rb1 {½-½ (96) Short,N (2678)-Adhiban,B (2655) Riadh 2017}) 11. Bxc4 Nxc4 12. Qxc4 Nc6 {White has an edge.} 13. Qe2 Bf5 14. Rd1 $146 ({Predecessor:} 14. Na3 Qb6 15. c3 Rfd8 16. Be3 Qa5 17. Bd4 Nxd4 18. Nxd4 Qxe5 19. Qxe5 Bxe5 20. Nxf5 gxf5 {½-½ (42) Oliva Castaneda,K (2452)-Avila Pavas,S (2295) Santa Clara 2019}) 14... Qa5 15. Bf4 (15. Bd2 {seems wilder.} Qc5 16. Be3 Qxc2 17. Rd2 Qc1+ 18. Rd1) 15... Rfd8 16. Na3 Rxd1+ 17. Rxd1 Rd8 18. c3 Rd5 19. Re1 Qd8 20. Kh2 h6 21. Bg3 a6 22. b3 Rd3 23. Nb1 Qd5 {[%mdl 1024] Black has compensation.} 24. c4 Qd7 25. Nbd2 g5 26. Nf1 (26. Ne4 $11 b6 27. Kh1) 26... g4 27. hxg4 Bxg4 28. Ne3 (28. e6 $11 Bxe6 29. Ne5 Bxe5 30. Bxe5) 28... Nd4 $15 29. e6 Nxf3+ ({Of course not} 29... Bxe6 30. Nxd4 Qxd4 31. Qh5 $11) (29... fxe6 $17 30. Qf1 Nxf3+ 31. gxf3 Bxf3) 30. Qxf3 Bxe6 31. Qe4 Rd4 32. Qf3 Qc6 (32... Rd3 {keeps more tension.}) 33. Nd5 Bxd5 34. cxd5 Qxd5 35. Qxd5 Rxd5 36. Rxe7 $11 {[%mdl 4096] Endgame KRB-KRB} Rd2 37. a4 b6 38. Rb7 Bd4 39. Rd7 a5 $2 {[%mdl 8192]} (39... Bc3 $11 40. Rxd2 Bxd2) 40. Kh3 $18 Rd3 $2 (40... Be3) 41. Kg4 Rd2 (41... Rxg3+ $142 42. Kxg3 Bc5) 42. Rd8+ Kh7 {[#]} 43. Be5 $1 {[%mdl 576] Pin} Rxf2 (43... Bxe5 44. Rxd2) 44. Bxd4 {White mates.} Rxg2+ 45. Kf5 {[%csl Gd4][%cal Rd8h8]} Rg5+ {[#]} 46. Kf6 $1 Rg7 47. Rf8 {Accuracy: White = 48%, Black = 39%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.13"]
[Round "4.2"]
[White "Perez Ponsa, Federico"]
[Black "Sorokin, Aleksey"]
[Result "1/2-1/2"]
[ECO "C70"]
[WhiteElo "2560"]
[BlackElo "2513"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,60,1,32,20,36,12,27,-42,-29,-32,-37,-26,-26,-33,-29,-50,-41,-45,9,-45,0,0,0,-11,-8,0,-6,-10,-19,-12,-7,-47,-16,-44,0,0,0,0,0,7,0,-22,-13,-21,28,0,0,0,0,0,27,0,14]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. Bb3 Ng6 6. d4 {C70: Ruy Lopez: 3...a6 4 Ba4, Norwegian and Delayed Schliemann} exd4 7. Nxd4 (7. O-O $5 {[%cal Rf3g5]}) 7... Na5 $146 (7... Bc5 {seems wilder.} 8. c3 O-O 9. O-O Ba7 10. Be3 Na5) ({Predecessor:} 7... Bc5 8. Nf5 O-O 9. Qh5 d6 10. Nc3 Bxf5 11. exf5 Qh4 12. Qxh4 Nxh4 {0-1 (24) Salgado Lopez,I (2622)-Durarbayli,V (2590) Dubai 2014}) 8. c4 (8. Nc3 $11 d6 9. Nf5) 8... Bc5 $15 9. Be3 O-O 10. O-O Ne5 11. Qe2 d6 12. h3 Be6 {[%cal Re6c4]} 13. Nd2 Nac6 ({Black should try} 13... Qf6 $15) 14. Nc2 (14. Nxe6 $11 fxe6 15. f4) 14... Nd7 15. Ba4 Re8 16. Rfe1 Qf6 17. Bxc6 bxc6 {[%cal Bb7c6,Bc6c5][%mdl 32]} 18. b4 Bxe3 19. Qxe3 c5 20. a3 a5 21. b5 Ne5 22. Qe2 Ng6 23. Ne3 a4 24. Ndf1 Nf4 25. Qd2 Qg5 {Threatening ...Bxc4!} 26. Kh1 Qg6 {[#] Hoping for ...Bxc4!} 27. f3 Qf6 28. Rad1 h5 29. Rc1 Qh6 30. Red1 Qf6 {Accuracy: White = 47%, Black = 57%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.13"]
[Round "4.3"]
[White "Harutyunian, Tigran K."]
[Black "Cordova, Emilio"]
[Result "0-1"]
[ECO "A20"]
[WhiteElo "2542"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "54"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,120,23,20,20,33,46,75,68,68,74,65,64,58,58,62,45,45,41,33,33,72,62,56,58,65,23,29,18,11,0,0,0,0,0,0,-8,-16,-46,-37,-122,-119,-122,-128,-123,-118,-115,-76,-97,-79,-83,-63,-144,-140,-132,-139,-151,-150,-182,-176,-163,-187,-185,-181,-174,-170,-139,-134,-164,-97,-91,-69,-273,-276,-258,-267,-246,-243,-367,-346,-358,-360,-337,-349,-344,-342,-332,-325,-373,-322,-579,-576,-958,-964,-916,-931,-828,-844,-12839,-2118,-1845,-1692,-2965,-1244,-1122,-996,-12818,-8084,-2806,-2234,-12843,-12839,-12844,-12845]} 1. c4 e5 2. g3 Nc6 3. Bg2 Bc5 4. Nc3 d6 5. Nf3 Nge7 6. e3 {A27: English Opening: Three Knights Variation} a6 7. d4 Ba7 8. dxe5 {White is better.} dxe5 (8... Nxe5 9. Nxe5 dxe5 10. Qxd8+ Kxd8 11. b3 Nc6 12. Ba3 {1-0 (62) Bachmann,A (2649)-Kunin,V (2592) Biel 2016}) 9. Qxd8+ Kxd8 10. O-O $146 ({Predecessor:} 10. b3 f6 11. Ba3 Bd7 12. Nd2 {1-0 (44) Rasmussen,A (2543)-Ochsner,B (2449) Denmark 2018}) 10... f6 11. b3 Ke8 12. Nd5 Nxd5 13. cxd5 Nb4 14. Rd1 Nc2 15. Rb1 e4 16. Nh4 Bg4 17. Rf1 Nb4 $1 18. Bxe4 Rd8 $1 19. Bf5 Bxf5 20. Nxf5 g6 21. Nh6 Rxd5 22. Bb2 Rf8 23. e4 Rd6 24. e5 (24. Ba3 $15 a5 25. Rfd1) 24... fxe5 $17 25. Bxe5 Rd2 {[%cal Rf8f2]} 26. Bf4 Rxa2 {Threatens to win with ...Nd3.} 27. Rbd1 {[#] Rfe1+ would kill now.} Re2 {Played: Ra2xf2} 0-1

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.13"]
[Round "4.4"]
[White "Khachiyan, Melikset"]
[Black "Wang, Justin"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "2493"]
[BlackElo "2459"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,101,-16,-10,-14,-18,-16,-12,-10,0,-7,-5,-4,-14,-1,-6,-22,-6,-18,-18,-18,-16,-26,-20,-22,-16,-15,-5,-33,-25,-31,-11,-25,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,83,71,57,64,119,54,171,171,171,171,171,171,171,118,2039,1993,1816,1861,1614,1448,2393,2224,1809,1620,3910,2881,3089,3367,29981,2677,29986,29986,29982,29982]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 f6 6. d4 exd4 7. Qxd4 Qxd4 8. Nxd4 Bd7 9. Bf4 O-O-O 10. O-O-O Ne7 11. h4 {C68: Ruy Lopez: Exchange Variation, sidelines} Ng6 12. Bg3 h5 13. f3 {The position is equal.} (13. Rd2 Bb4 14. Nde2 Rde8 15. Rhd1 Be6 16. a3 Bc5 17. Nd4 Ne5 18. Nxe6 Rxe6 {½-½ (55) Stanojoski,Z (2493)-Georgiev,V (2574) Skopje 2011}) 13... Bb4 $146 ({Predecessor:} 13... Ne5 14. Nce2 c5 15. Nf5 g6 16. Ne3 Bh6 17. Bf4 Bg7 18. Rd5 b6 {0-1 (50) Bruned,B (2211)-Maleki,N (2116) Cannes 2007}) 14. Nce2 Rhe8 15. Nf4 Nxf4 16. Bxf4 Bf8 17. a3 g6 18. Rd2 c5 19. Ne2 Be6 20. Rhd1 Rxd2 21. Rxd2 b5 22. Nc3 c6 23. Rd1 Bf7 24. Kd2 c4 25. Ke2 a5 26. Bd6 Bg7 27. f4 Be6 {And now ...Bg4+ would win.} 28. Ke3 Bg4 29. Rd2 Kb7 30. Bc5 Kc7 31. g3 Bf8 32. Bxf8 Rxf8 $11 {[%mdl 4096] Endgame KRB-KRN} 33. Rd4 Kb6 34. Rd6 Kc7 (34... b4 $1 $11 {keeps the balance.} 35. axb4 axb4 36. Nd5+ {[%mdl 64] Double Attack} Kc5 37. Rxf6 Rd8 38. Nxb4 Kxb4) 35. e5 $16 fxe5 36. fxe5 Bf5 {[#]} (36... b4 $14 37. axb4 axb4) 37. Kd4 (37. Ne2 $1 $16) 37... Rd8 ({Black should play} 37... b4 $1 $14 38. axb4 axb4) 38. Rxd8 $18 Kxd8 {KB-KN} 39. Ne4 Ke7 40. c3 a4 41. Ng5 (41. Nc5 $18) 41... Bd7 $2 {[%mdl 8192]} (41... Kd7 $16 42. Kc5 Bg4) 42. Kc5 Bf5 43. Kxc6 Bd7+ 44. Kc5 Be8 45. e6 Kf6 46. Kd6 Kf5 47. Nh7 g5 48. hxg5 Bg6 49. e7 (49. Nf8 $142 Be8 50. Ke7 h4 51. gxh4 Bh5 {[#]} 52. g6 $1 {[%mdl 576] Promotion} Bxg6 53. Nxg6 Kxg6 54. Kd8) 49... Kg4 50. Nf8 Be8 51. g6 {Accuracy: White = 62%, Black = 34%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.13"]
[Round "4.5"]
[White "Azarov, Sergei"]
[Black "Moradiabadi, Elshan"]
[Result "1-0"]
[ECO "C95"]
[WhiteElo "2586"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "147"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 32,147,23,17,18,12,14,25,18,19,26,23,16,16,28,21,10,26,19,13,0,3,27,25,37,27,29,19,16,14,26,11,17,15,9,10,21,9,21,14,25,29,30,24,25,30,29,27,30,8,8,8,8,8,9,8,8,8,8,8,8,8,633,633,633,633,678,678,678,678,678,678,678,678,678,678,678,678,678,678,678,678,678,678,678,678,678,678,29956,29964,29965,29960,713,706,706,705,690,690,690,690,690,633,29988,29989,29989,633,29990,29991,29991,633,29992,29993,29993,29994,29994,29995,29995,29996]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. Bc2 Bb7 12. Nbd2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. a4 Bg7 16. Bg5 h6 17. Bd2 Nb6 {[%cal Bd7b6,Bb6c4,Bc4d2][%mdl 32] C95: Closed Ruy Lopez: Breyer Variation with 10 d4} 18. Qc1 (18. axb5 axb5 19. Bd3 Rxa1 20. Qxa1 c6 21. b3 Qc7 22. Qc1 Kh7 23. Be3 Bc8 24. Qc2 Bd7 25. Ra1 {0-1 (63) Hou,Y (2658)-Vitiugov,N (2734) Belokurikha 2018}) 18... Kh7 19. b3 bxa4 {White has an edge.} 20. bxa4 Nc4 21. Rb1 $146 ({Predecessor:} 21. Bd3 Nxd2 22. Qxd2 Kg8 23. Rab1 Bc8 24. Qa2 c6 25. a5 {0-1 (65) Ramiro Ovejero,J (2382)-Santos Latasa,J (2582) Linares 2018}) 21... Bc6 22. Bb3 Nxd2 23. Qxd2 Re7 24. dxe5 dxe5 25. Qxd8 (25. Qa2 {seems wilder.} Qe8 26. h4 h5 27. Ng5+ Kg8 28. a5) 25... Rxd8 {[#]} 26. Bxf7 $1 {[%mdl 512]} Rd3 (26... Rxf7 27. Nxe5) 27. Bc4 Rxc3 28. Bxa6 Bxa4 29. Bb5 Bxb5 30. Rxb5 Ne8 31. Rbb1 Nd6 32. Rec1 Rxc1+ 33. Rxc1 Bf6 34. Rc6 h5 35. Nd2 Bg5 36. Ngf1 Kg7 37. g3 h4 38. gxh4 Bxh4 39. Ne3 Bg5 40. Nd5 {Hoping for Nf3.} Rf7 41. Nc4 Nxe4 42. Nxe5 Rxf2 43. Rxg6+ Kh7 {...Rd2 is the strong threat.} 44. Rxg5 Nxg5 45. Kxf2 {aiming for h4.} Nxh3+ 46. Kg3 c6 $2 {[%mdl 8192] [#]} (46... Ng5 $11) 47. Nf6+ $1 $18 Kg7 {[#]} 48. Ne4 $1 c5 49. Nc4 ({Weaker is} 49. Kxh3 c4 $14) 49... Kg6 50. Kxh3 Kf5 51. Nc3 Kf4 52. Kh4 Kf5 53. Kg3 Kg5 54. Kf3 Kf5 55. Nd5 Kg5 56. Nde3 Kg6 57. Kg4 Kf6 58. Kf4 Kg6 59. Ng4 Kh5 60. Nge5 Kh4 61. Nf3+ Kh5 62. Kf5 Kh6 63. Nfe5 Kh5 64. Ng6 Kh6 65. Nf4 Kg7 66. Ke6 Kh7 67. Kf7 Kh6 68. Kf6 Kh7 {If Black can now play ...Kh6 this consolidates a bit.} 69. Ne6 Kh6 70. Ng7 Kh7 {If only Black now had time for ...Kh6....} 71. Nf5 {White mates.} Kg8 72. Ke7 Kh8 73. Kf7 Kh7 74. Ne5 {Accuracy: White = 75%, Black = 54%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.14"]
[Round "5.1"]
[White "Moradiabadi, Elshan"]
[Black "Erenburg, Sergey"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2552"]
[BlackElo "2581"]
[Annotator "TA"]
[PlyCount "116"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,116,0,6,0,6,0,0,0,0,-14,0,0,0,0,0,0,0,0,0,0,21,0,0,0,0,29,19,40,46,14,76,75,75,75,60,68,56,-29,0,0,22,0,0,0,0,0,0,0,0,0,0,0,0,-28,-30,-91,-79,-83,-82,-105,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. c4 e6 6. Nc3 Ne7 7. Nge2 {B12: Caro-Kann: Advance Variation} Nd7 8. Ng3 Bg6 9. Bg5 Qb6 $146 ({Predecessor:} 9... f6 10. exf6 gxf6 11. Be3 Qb6 {1-0 (53) Sutovsky,E (2633)-Houska,J (2402) Douglas 2018}) 10. Rc1 f6 11. exf6 $1 gxf6 12. Be3 $1 Qxb2 13. cxd5 Nxd5 14. Nxd5 exd5 15. Bd3 $36 {[%mdl 2048] White is pushing.} Qb4+ 16. Kf1 Bxd3+ 17. Qxd3 O-O-O 18. Bf4 Re8 19. Kg1 Rg8 20. Qd1 Bd6 (20... Rg4 $11 {remains equal.} 21. Nxh5 f5) 21. Rb1 $16 Qa3 {[#]} 22. Bxd6 $1 Qxd6 23. Qxh5 Qf4 24. Qd1 (24. Nf5 $14) 24... Rg4 25. h5 Rh8 ({Don't blunder} 25... Qxd4 $2 26. Qxd4 Rxd4 27. Nf5 $18) 26. Qb3 Nb6 27. a4 Rg7 ({Much weaker is} 27... Qxd4 $6 28. a5 $16) 28. Qd3 Nc4 29. h6 Rgh7 ({Don't play} 29... Rxh6 $6 30. Nh5 $16) 30. Qf5+ Qxf5 31. Nxf5 Kc7 32. Re1 Kd7 33. Rb1 (33. f4 $11) 33... Nd6 $17 34. Nxd6 Kxd6 {[%mdl 4096] Endgame KRR-KRR} 35. Rb3 b6 (35... Rxh6 $17 36. Rxh6 Rxh6 37. Rxb7 Rh4 38. Rxa7 Rxd4) 36. Rbh3 $11 {The position is equal.} c5 37. f4 f5 38. Kf2 cxd4 39. Rh5 Rf8 40. Kf3 Rf6 41. g4 fxg4+ 42. Kxg4 d3 43. Kg5 Rhf7 44. Rf1 d2 {White must now prevent ...Rf5+.} 45. Rhh1 {Threatens to win with h7.} Rf5+ 46. Kg4 {[#] And now h7 would win.} d1=Q+ $1 {[%mdl 512]} 47. Rxd1 Rxf4+ {[%mdl 64] Double Attack} 48. Kg5 R4f5+ 49. Kg4 {h7 is the strong threat.} Rf4+ 50. Kg5 R7f5+ 51. Kg6 Rf6+ 52. Kg5 R4f5+ 53. Kg4 {Hoping for h7.} Rf4+ 54. Kg5 R6f5+ 55. Kg6 Rf6+ 56. Kg5 R4f5+ 57. Kg4 {Strongly threatening h7.} Rf4+ 58. Kg5 R6f5+ {Accuracy: White = 66%, Black = 69%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.14"]
[Round "5.2"]
[White "Wang, Justin"]
[Black "Azarov, Sergei"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2459"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "51"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,51,0,1,6,18,0,0,0,0,0,0,0,31,31,25,23,41,25,14,13,13,0,0,0,21,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 O-O 10. Be3 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} f5 11. exf6 Nxc3 12. bxc3 {Threatens to win with fxg7.} Qxf6 13. O-O Bg4 {[%cal Rg4f3]} 14. Be2 $1 {[#]} Nd8 $146 ({Predecessor:} 14... Ne7 15. h3 Bh5 16. Ne5 Bxe2 17. Qxe2 {½-½ (48) Amonatov,F (2636)-Leko,P (2691) Riadh 2017}) 15. Ne5 Bxe2 16. Qxe2 {Strongly threatening Nd7.} Qf5 17. g4 Qe6 18. f4 {The position is equal.} Nf7 19. h3 Nxe5 20. fxe5 c5 21. dxc5 Qxe5 22. cxb6 Qg3+ {[%mdl 64] [#] Double Attack} 23. Kh1 Qxh3+ 24. Kg1 {Black must now prevent Bd4.} Qg3+ 25. Kh1 {Hoping for Rxf8+.} Qh3+ 26. Kg1 {Accuracy: White = 44%, Black = 54%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.14"]
[Round "5.3"]
[White "Cordova, Emilio"]
[Black "Khachiyan, Melikset"]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "2570"]
[BlackElo "2493"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 22,71,55,56,76,58,89,71,129,120,131,68,65,38,33,18,153,162,195,174,173,52,66,70,60,68,59,63,93,93,91,89,91,88,383,348,348,348,348,348,348,339,405,395,441,432,447,447,542,527,958,479]} 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 c5 5. cxd5 exd5 6. Bg2 Nc6 7. O-O Be7 8. Nc3 O-O 9. dxc5 d4 10. Na4 Bf5 11. Bf4 Be4 12. Rc1 Qd5 {D34: Tarrasch Defence: 6 g3 Nf6 7 Bg2 Be7} 13. a3 Rfd8 $146 ({Predecessor:} 13... Rad8 14. b4 Qa2 15. Ra1 Qd5 16. Nb2 a5 17. b5 Na7 18. a4 Bxc5 19. Bc7 Rd7 20. Bxa5 {1-0 (30) Vazquez Igarza,R (2479)-Roa Alonso,S (2360) Madrid 2005}) 14. b4 Rac8 ({Better is} 14... h6) 15. Re1 h6 16. b5 (16. Bh3 $16) 16... Na5 $14 17. b6 (17. Bh3 $5 {[%cal Rh3c8]} g5 18. Be5 $14 (18. Bxc8 gxf4 19. Bh3 Nb3 $14)) 17... a6 $1 18. Bc7 Rd7 (18... Re8 $11) 19. Bh3 $16 Bf5 20. Bxf5 Qxf5 21. Qd3 (21. Nxd4 $18 Qh3 22. e3 (22. f3 Nd5 $16)) 21... Qh3 22. Ne5 $36 {[%mdl 2048] White fights for an advantage.} Ng4 23. Nxg4 Qxg4 24. Nb2 Rd5 25. c6 Nxc6 {[#]} 26. Rxc6 $1 {[%mdl 512]} bxc6 27. b7 {aiming for Qe4!} Rb5 $2 {[%mdl 8192] [#]} (27... Re8 $16 {is a better defense.}) 28. Qxd4 {Played: Qd3-e4} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.14"]
[Round "5.4"]
[White "Sorokin, Aleksey"]
[Black "Harutyunian, Tigran K."]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2513"]
[BlackElo "2542"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,81,16,16,14,38,37,48,48,50,48,48,31,29,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6,8,24,7,20,0,0,0,22,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Be3 Qa5 9. Qd2 O-O 10. Rc1 Nd7 {[%cal Bb8d7,Bd7f6,Bf6g4][%mdl 32]} 11. Bd3 {D85: Exchange Grünfeld: Unusual White 7th moves and lines with 7 Nf3} e5 12. d5 Nf6 13. c4 {White is slightly better.} Qc7 {[#]} 14. O-O $146 ({Predecessor:} 14. h3 Ne8 15. O-O Nd6 16. Qe2 f5 17. Bd2 fxe4 18. Bxe4 Nxe4 19. Qxe4 {½-½ (30) Esipenko,A (2624)-Svidler,P (2729) Khanty-Mansiysk 2019}) 14... Ng4 15. Bg5 f6 16. h3 (16. Be3 $5) 16... fxg5 17. hxg4 Bxg4 18. Nh2 Bd7 19. Qxg5 Rf4 20. g3 Bf6 21. Qh6 Bg7 22. Qg5 Rf7 (22... Bf6 $5 23. Qh6 $8 Bg7 24. Qg5 $11) 23. Be2 Bf6 24. Qe3 h5 25. Qh6 Rg7 26. Bxh5 {[%mdl 64] [#] Pin} Qd8 $1 {Strongly threatening ...Bg5.} 27. Bxg6 Bg5 28. Qh5 {Black must now prevent f4.} Bxc1 29. Rxc1 Qf6 $1 30. Bf5 Bxf5 31. exf5 Rg5 $1 {[%cal Rg5h5]} 32. Ng4 Qg7 (32... Qxf5 $5 33. Nh6+ $8 {[%mdl 64] Double Attack} Kf8 34. Nxf5 Rxh5 $11) 33. f6 Rxh5 34. fxg7 Kxg7 $11 {[%mdl 4096] Endgame KRR-KRN} 35. Re1 Rg5 $132 {[%mdl 2048] Black has counterplay} 36. Re4 Re8 37. Kg2 Kf7 {The position is equal.} 38. Nh2 Kf6 39. Ng4+ Kf7 40. Nh2 Kf6 41. Ng4+ {Accuracy: White = 75%, Black = 77%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.14"]
[Round "5.5"]
[White "Yoo, Christopher Woojin"]
[Black "Perez Ponsa, Federico"]
[Result "1/2-1/2"]
[ECO "B21"]
[WhiteElo "2449"]
[BlackElo "2560"]
[Annotator "TA"]
[PlyCount "60"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,60,-39,-16,-20,-18,-31,0,0,0,0,0,-10,0,0,0,-13,0,0,0,0,2,-27,-12,-12,-10,-31,-3,-8,0,-19,-17,-15,0,-39,0,-39,31,25,25,18,20,0,29,25,35,0,0,0,0,0,-4]} 1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Nge7 7. O-O {B21: Sicilian: 2 f4 and Morra Gambit} (7. Bg5 f6 8. Be3 Ng6 9. a3 Be7 10. Ba2 Qc7 11. Rc1 Qb8 12. O-O O-O 13. Qe2 Kh8 14. Bb1 b6 {½-½ (75) Kislinsky,A (2513)-Schippers,M (2302) Groningen 2017}) 7... Ng6 8. Nb5 d6 9. Bg5 Qd7 10. Nbd4 $146 ({Predecessor:} 10. Nfd4 a6 11. Nc3 h6 12. Be3 Be7 13. f4 Nxd4 14. Bxd4 b5 15. Bxe6 fxe6 {0-1 (56) Khaskelman,E (2152)-Karnaukh,A (2240) Kiev 2000}) 10... h6 11. Be3 a6 12. Nxc6 bxc6 13. h4 h5 14. Bg5 Be7 15. Bxe7 Qxe7 16. Bb3 Bd7 17. g3 c5 18. Re1 Rd8 19. Re3 Bb5 20. a4 Bc6 21. Qe2 a5 22. Bc4 Qc7 23. b3 Ne5 (23... Bb7 $15) 24. Nxe5 $14 dxe5 25. Rc1 Qb6 26. Bb5 Rd4 27. Bxc6+ Qxc6 28. Qb5 (28. Rec3 $5 {[%cal Rc3c5]} Rxe4 29. Re3 Rxe3 30. Qxe3 $14 {[%mdl 64] Double Attack}) 28... Qxb5 {The position is equal.} 29. axb5 O-O 30. Rxc5 f6 {Accuracy: White = 51%, Black = 32%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.15"]
[Round "6.1"]
[White "Erenburg, Sergey"]
[Black "Perez Ponsa, Federico"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2581"]
[BlackElo "2560"]
[Annotator "TA"]
[PlyCount "71"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,71,18,18,27,30,30,37,33,41,27,32,32,37,22,47,8,37,0,9,0,38,33,69,75,90,76,87,79,77,66,66,50,50,50,66,66,66,66,66,66,66,66,70,39,65,39,39,33,34,7,8,10,13,0,0,0,8,0,0,0,8,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 {[%cal Bb8d7,Bd7e5,Be5f3][%mdl 32]} 4. c3 Ngf6 5. Bd3 Ne5 6. Be2 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} Nxf3+ 7. Bxf3 e5 8. d4 {White is slightly better.} Be7 9. dxe5 dxe5 10. Qxd8+ Bxd8 11. Be3 $146 ({Predecessor:} 11. Nd2 Be6 12. Be2 Bc7 {1-0 (38) Aronian,L (2765)-Vachier Lagrave,M (2781) London 2018}) 11... b6 12. a4 Rb8 13. c4 Be6 14. b3 a5 15. Nc3 Bc7 16. O-O-O Rd8 17. Bg5 Ke7 18. h3 h6 19. Bxf6+ (19. Bd2 {is more complex.} Bd6 20. g4 Kd7 21. Nd5 Bxd5 22. exd5 e4 23. Bg2) 19... Kxf6 20. Bg4 Rxd1+ 21. Kxd1 Ke7 22. Ke2 g6 23. Bxe6 Kxe6 $14 {[%mdl 4096] Endgame KRB-KRN} 24. h4 h5 $1 25. Rh3 Bd8 26. Nd5 Rg8 27. Rh1 f5 28. Nc3 Rg7 29. g3 Rd7 {The position is equal.} 30. Rf1 Rd4 31. f3 Be7 32. Rg1 Bf6 33. Nb5 Rd7 34. Nc3 Rd4 35. Ke3 Bg7 36. Ke2 {Accuracy: White = 54%, Black = 75%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.15"]
[Round "6.2"]
[White "Harutyunian, Tigran K."]
[Black "Yoo, Christopher Woojin"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2542"]
[BlackElo "2449"]
[Annotator "TA"]
[PlyCount "111"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,111,19,2,18,26,17,23,38,37,44,41,64,78,95,69,85,78,83,83,83,83,91,93,95,83,93,88,93,95,103,91,96,93,98,75,83,81,114,106,95,94,108,69,87,93,96,53,97,60,87,80,81,45,60,60,59,31,19,27,20,0,11,0,0,-102,-101,-102,-100,-103,-102,-129,-55,-67,-40,-40,-40,-40,-41,-52,-44,-54,-54,-52,-45,-54,-28,-24,-25,-43,-43,-43,-43,-50,-45,-44,4578,4570]} 1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. e4 c5 6. Nge2 Nc6 7. d3 d6 8. O-O a6 9. h3 Ne8 {A36: Symmetrical English vs ...g6: 4 Bg2 Bg7} (9... Rb8 10. a4 Ne8 11. Be3 b5 12. axb5 axb5 13. Nxb5 Nc7 14. Nec3 {½-½ (14) Alekseev,E (2649)-Demchenko,A (2661) Fagernes 2019}) 10. Be3 Bd7 11. d4 cxd4 {White has an edge.} 12. Nxd4 Rc8 13. Nde2 Nf6 $146 ({Predecessor:} 13... Na5 14. b3 b5 15. Rc1 bxc4 16. Nd5 Rb8 17. bxc4 e6 18. Ndf4 {0-1 (48) Sega,C (2252)-Blit,J (2301) Santos 2012}) 14. b3 Rb8 15. a4 Qa5 16. Nd5 Nxd5 17. exd5 ({But not} 17. cxd5 Nb4 $11) 17... Nb4 18. Nd4 e5 {[#]} 19. dxe6 $1 fxe6 20. Qd2 Nc6 {Hoping for ...Qxd2.} 21. Rad1 Qxd2 22. Rxd2 Ne5 23. Rfd1 Nf7 24. h4 Rfe8 25. a5 Bf6 26. Nf3 Bd8 27. Ng5 Bxg5 28. hxg5 Bc6 29. f4 Bxg2 30. Kxg2 e5 31. Kf3 Re6 32. Bb6 exf4 33. gxf4 Rbe8 34. Rh1 Rf8 {next ...Nxg5+ is good for Black.} 35. Kg3 Rfe8 36. Rdh2 h6 37. gxh6 {[#] Black must now prevent h7+.} Kh7 38. Kf3 g5 39. Rg1 Rf6 40. f5 (40. Be3 $1 $11 {keeps the balance.}) 40... Rxf5+ $17 41. Kg3 Re4 42. Rf2 Nxh6 43. Rd1 Rxf2 (43... Rfe5 $17 44. Rh2 Kg7) 44. Kxf2 {[%mdl 4096] Endgame KRB-KRN} Nf5 45. c5 $1 Re6 46. Bd8 dxc5 47. Bxg5 Kg6 48. Bd8 Nd4 49. b4 Re2+ 50. Kg3 Re8 (50... Re5 $5 {[%cal Re5d5]} 51. Bb6 Ne2+ 52. Kf3 cxb4 $17) 51. Bb6 Nf5+ 52. Kf4 cxb4 53. Rb1 Ne7 {Threatens to win with ...Nd5+.} 54. Bc5 $1 Nd5+ 55. Kf3 Rf8+ $2 {[%mdl 8192]} (55... Kf5 $15 56. Bxb4 Re3+ 57. Kf2 Re4) 56. Bxf8 {Accuracy: White = 65%, Black = 54%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.15"]
[Round "6.3"]
[White "Khachiyan, Melikset"]
[Black "Sorokin, Aleksey"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "2493"]
[BlackElo "2513"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,80,20,22,30,12,32,35,36,14,28,16,16,-37,-31,-28,-22,-20,45,38,77,65,64,13,10,17,18,37,31,-19,-19,-18,-11,-48,-25,-22,-31,-25,-24,-47,-20,-39,-16,-23,-13,-44,-11,-25,-14,-18,-15,-32,-31,-32,-44,-68,-69,-72,-36,-66,-17,-20,-20,-26,-28,-27,-37,-34,-10]} 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Bd3 O-O 8. Qc2 Re8+ {B15: Caro-Kann: 3 Nc3: 3...g6 and 3...dxe4 4 Nxe4 Nf6 5 Nxf6+ exf6} 9. Ne2 h5 10. Be3 Nd7 {[%cal Bb8d7,Bd7f8,Bf8g6,Bg6e7,Be7d5,Bd5b4][%mdl 32] White is slightly better.} 11. O-O-O (11. Ng3 Bf4 12. O-O-O Bxe3+ 13. fxe3 Rxe3 14. Rde1 Rxe1+ 15. Rxe1 Nf8 16. Nxh5 {½-½ (36) Mamedov,R (2650)-Cheparinov,I (2667) Hengshui 2019}) 11... Nf8 12. Kb1 Be6 13. Nf4 (13. c4 $11) 13... Bxf4 $15 14. Bxf4 Ng6 15. Bc1 $146 ({Predecessor:} 15. Be3 Qd5 16. c4 {0-1 (68) Urban,K (2325)-Parkhov,Y (2364) Bad Blankenburg 2018}) 15... b5 (15... Qd6 $11) 16. f4 $1 $14 {[%cal Rf4f5] Strongly threatening f5.} (16. Bxg6 $2 fxg6 17. Ka1 (17. Qxg6 $2 Qd5 $19) 17... Qd5 $1 $17 {[%mdl 512]}) 16... Ne7 {[#]} 17. f5 $1 {[%cal Rf5e6]} Bc4 18. Be4 (18. Rhg1 $14) 18... Nd5 19. Bd2 b4 20. cxb4 Qb6 21. Bd3 (21. b3 $5 {[%cal Rb3c4]}) 21... Bxd3 22. Qxd3 Nxb4 23. Qb3 Nd5 24. Qxb6 axb6 25. Rhe1 Kf8 26. Rc1 Rxe1 27. Bxe1 $15 {[%mdl 4096] Endgame KRB-KRN} Rc8 28. Bd2 Ke8 29. Rf1 Kd7 30. Kc2 c5 31. dxc5 Rxc5+ 32. Kd3 Ne7 33. Rf4 Nxf5 34. Ra4 Rd5+ 35. Ke2 Kc6 36. Ra8 Nh4 37. Ra7 Rd7 38. Rxd7 Kxd7 39. g3 Nf5 40. Kd3 Kc6 {Accuracy: White = 51%, Black = 51%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.15"]
[Round "6.4"]
[White "Azarov, Sergei"]
[Black "Cordova, Emilio"]
[Result "1/2-1/2"]
[ECO "C03"]
[WhiteElo "2586"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "76"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 18,76,31,0,15,0,0,0,0,0,0,-38,-31,-37,-37,-27,-33,-55,-65,-70,-70,-70,-70,-70,-70,-72,-68,-148,-116,-336,-360,-462,-103,-112,-96,-84,6,8,13,-78,-80,-104,0,0,0,0,0,-9,-9,-9,-8,-15,-10,-16,0,0,0,-12,0,0,27]} 1. e4 e6 2. d4 d5 3. Nd2 a6 4. Bd3 c5 5. dxc5 Bxc5 6. Ngf3 Nc6 7. O-O Nge7 8. a3 O-O 9. b4 Ba7 10. Bb2 Ng6 {C07: French Tarrasch: 3...c5, 4 Ngf3 and 4 exd5 Qxd5} 11. e5 (11. g3 d4 12. h4 Qf6 13. Nh2 e5 14. h5 Nge7 15. f4 exf4 16. gxf4 {1-0 (47) Ali Marandi,C (2515)-Damljanovic,B (2544) Paracin 2017}) 11... Nf4 12. Nb3 f6 13. exf6 gxf6 14. Re1 $146 ({Predecessor:} 14. c4 e5 15. cxd5 Qxd5 16. Bc2 Qf7 17. Nh4 Qg7 18. Nc5 {½-½ (62) Hojjatova,A (2336)-Mammadova,G (2357) Baku 2018}) 14... e5 15. Bf1 Bg4 16. Bc1 {[#]} Nxg2 $1 {[%mdl 512]} 17. Bxg2 e4 18. Bh6 Ne5 {[%mdl 64] Pin} 19. Nbd2 $1 {[%cal Rd2e4]} ({Not} 19. Bxf8 $2 Nxf3+ 20. Bxf3 Bxf3 $19) 19... exf3 20. Nxf3 Re8 {Hoping for ...Nxf3+.} 21. Kh1 $1 Kh8 22. Rg1 ({White should play} 22. Rb1 $15) 22... Re7 23. h3 $2 (23. Bf4 $17 {might work better.}) 23... Qe8 $19 24. Qxd5 {And now Nxe5 would win.} Rd8 $2 (24... Qh5 $1 $19 {[%cal Rg4f3] and Black stays clearly on top.} 25. Nxe5 fxe5) 25. Qb3 $17 {Black must now prevent Nxe5.} Be6 26. Qc3 {[#]} Qh5 {[#]} (26... Rc8 $1 $17 {[%cal Rc8c3]} 27. Qd2 Qh5) 27. Bg5 $1 $11 {[%cal Rg5f6][%mdl 512]} Rf8 (27... fxg5 28. Qxe5+) 28. Nxe5 (28. Bxf6+ $11 {remains equal.} Rxf6 29. Nxe5 Bxh3 30. Bxh3 (30. Ng6+ Qxg6 31. Bxh3 Qe4+ 32. Rg2 Bd4 $11) 30... Qxe5 31. Qxe5 Rxe5 32. Rae1 Rxe1 33. Rxe1) 28... Qxg5 $17 29. Nd3 {[#]} Rc8 (29... Bd5 $1 $17 {aiming for ...Rg7.} 30. Raf1 Rg8) 30. Nc5 $1 $11 {The position is equal.} Bxc5 31. bxc5 Rxc5 32. Qd4 Rd7 33. Qe4 $132 {[%mdl 2048] White has counterplay} Re5 34. Qb4 Qh6 35. Qc3 $1 {[%cal Rc3c8] Threatens to win with Qc8+.} Rg7 36. Rae1 Qf4 37. Qb4 Qxb4 38. axb4 Bf5 {Accuracy: White = 51%, Black = 55%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.15"]
[Round "6.5"]
[White "Moradiabadi, Elshan"]
[Black "Wang, Justin"]
[Result "1-0"]
[ECO "A17"]
[WhiteElo "2552"]
[BlackElo "2459"]
[Annotator "TA"]
[PlyCount "115"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,115,10,11,27,10,10,18,14,4,15,0,0,5,8,0,11,0,28,0,11,15,16,15,83,72,66,49,67,26,81,66,75,74,110,110,104,82,85,68,93,0,91,86,85,89,84,83,70,82,86,98,96,97,96,92,98,68,125,81,89,92,99,96,124,125,135,135,209,202,249,251,275,265,602,602,710,681,992,993,910,758,983,588,1188,1134,1253,1217,1912,1833,1811,1710,5077,3706,6133,5940,4408,4008,3703,2576,29974,29974,29976,29977,29954,5122]} 1. c4 Nf6 2. Nf3 e6 3. Nc3 Bb4 4. g3 O-O 5. Bg2 d5 6. a3 Be7 7. d4 Nc6 {A17: English Opening: 1...Nf6 with ...Bb4} 8. Ne5 dxc4 9. Bxc6 bxc6 {The position is equal.} 10. Nxc6 Qe8 11. Nxe7+ Qxe7 12. Qa4 c5 13. dxc5 Qxc5 14. Be3 {[#]} Qh5 $146 ({Predecessor:} 14... Qc7 15. Rd1 Nd5 16. Bd4 {1-0 (88) Carlsen,M (2842)-Karjakin,S (2773) Saint Louis 2018}) 15. Qxc4 Bb7 16. O-O Ng4 {[%csl Gg4][%cal Rh5h2]} 17. h4 Qg6 (17... Nxe3 $11 {keeps the balance.} 18. fxe3 Rac8) 18. Bc5 Rfc8 {White should prevent ...Ne3!} 19. Qb4 $36 {[%mdl 2048] White is pushing.} Bc6 20. Qf4 h6 (20... e5 $11 {remains equal.} 21. Qd2 h6) 21. f3 Nf6 $1 22. Bf2 Qc2 23. Bd4 Nd7 24. Rac1 Qb3 25. Nb1 Bb5 26. Nc3 Bc6 $1 27. Rfd1 e5 28. Bxe5 Nxe5 29. Qxe5 Qxb2 30. Qa5 $1 Be8 {And now ...Rc4 would win.} 31. Qb4 $1 {[%cal Rb4b2]} Rab8 {[#]} 32. Qxb2 $1 Rxb2 33. Kf2 Kh7 34. Ne4 Ba4 (34... Rxc1 $14 35. Rxc1 Bb5) 35. Rb1 ({Don't play} 35. Rxc8 $6 Bxd1 36. Nc3 Rc2 $14) 35... Ra2 36. Ra1 Rxa1 37. Rxa1 $16 {[%mdl 4096] Endgame KRB-KRN} Rc2 38. Rb1 Bc6 39. Nd6 Bd5 {[#]} (39... f6 $16 40. Rb8 Rd2) 40. Rb5 $1 $18 {[%cal Rb5d5]} Ba2 41. Rb7 Rc6 42. Nxf7 Bxf7 $2 (42... Ra6 43. e4 Bxf7) 43. Rxf7 {KR-KR} Ra6 44. h5 Rxa3 45. e4 Kg8 46. Rb7 a5 47. Ra7 Ra1 48. Ke3 a4 49. Kf4 a3 50. Kf5 Kh7 51. e5 a2 52. f4 Kg8 53. Kg6 {[%cal Ra7a8]} Kf8 54. Ra8+ Ke7 55. Kxg7 Rg1 56. Rxa2 {White mates.} Rxg3+ 57. Kxh6 Ke6 58. Ra6+ {Accuracy: White = 74%, Black = 29%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.16"]
[Round "7.1"]
[White "Wang, Justin"]
[Black "Erenburg, Sergey"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2459"]
[BlackElo "2581"]
[Annotator "TA"]
[PlyCount "92"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,92,6,6,6,5,5,8,5,11,5,6,6,7,0,0,-11,0,0,0,-8,-8,-6,-14,-27,-30,-30,-29,-21,-14,-17,-3,-15,0,-6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 Qc7 5. Nc3 h5 6. Bd3 {B12: Caro-Kann: Advance Variation} Bxd3 7. Qxd3 {Hoping for e6.} e6 8. Nf3 a6 9. Ne2 c5 10. c3 Nc6 11. a3 $146 ({Predecessor:} 11. O-O Nh6 12. Bxh6 Rxh6 {0-1 (62) Samant,A (2342)-Turov,M (2579) Taleigao 2019}) 11... Nge7 12. Bd2 Qb6 13. O-O cxd4 14. cxd4 Nf5 15. Bg5 Be7 16. g3 Bxg5 17. hxg5 g6 18. Kg2 Kf8 {The position is equal.} 19. Rfc1 Kg7 20. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Rac8 21. Rc5 a5 22. b5 Na7 23. Rac1 Rxc5 24. Rxc5 Rc8 25. Rxc8 Nxc8 26. a4 Qc7 27. Qc3 Qxc3 28. Nxc3 $11 {[%mdl 4096] Endgame KNN-KNN} Nb6 29. Kf1 Nc4 30. Ke2 Kf8 31. Kd3 Ke8 32. Kc2 Kd7 33. Kb3 Ne7 34. Ne2 Nc8 35. Nf4 Ne7 36. Nd3 Kc7 37. Nc5 Nf5 38. Kc3 Nb6 39. Kb3 Nc8 40. Kc3 Nfe7 41. Kb3 Nb6 42. Kc3 Nf5 43. Kb3 Nc4 44. Nd3 Kb6 45. Nb2 Nxb2 46. Kxb2 Kc7 {Accuracy: White = 73%, Black = 82%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.16"]
[Round "7.2"]
[White "Cordova, Emilio"]
[Black "Moradiabadi, Elshan"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2570"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,85,16,5,6,17,14,2,7,10,0,33,15,13,22,13,-9,0,-20,15,15,13,0,0,0,7,0,3,0,22,17,35,24,19,18,42,0,14,7,7,13,4,12,22,8,8,10,10,10,10,6,6,6,6,0,8,6,42,38,53,38,44,36,81,69,104,92,95,88,85,88,85,85,85,66,106,94,722,719]} 1. Nf3 g6 2. g3 Bg7 3. d4 c5 4. c3 Na6 (4... b6 5. Bg2 Bb7 6. O-O Nf6 7. Bg5 O-O 8. Nbd2 h6 9. Bxf6 Bxf6 10. e3 h5 11. Ne1 d5 12. Nd3 Nc6 13. f4 Ba6 14. Nf3 e6 {1-0 (46) Banusz,T (2612)-Gledura,B (2621) Budapest 2018}) 5. Bg2 Nf6 6. O-O {A40: Unusual replies to 1 d4} d5 7. Bf4 O-O 8. Be5 {The position is equal.} Bf5 9. Nbd2 Qc8 $146 ({Predecessor:} 9... Qd7 10. Re1 Rfd8 11. a3 Rac8 12. e3 c4 13. Bxf6 exf6 14. e4 dxe4 15. Nxe4 Bxe4 16. Rxe4 {½-½ (54) Mueller,M (2223)-Gutman,L (2448) Muehlhausen 2007}) 10. Re1 Rd8 11. Rc1 Qd7 12. Qb3 Rac8 13. Qa3 Ne4 14. Bxg7 Kxg7 15. Ne5 Qe6 16. Nf1 {With the idea g4!} Bh3 17. Bxh3 Qxh3 18. b4 f6 19. Nd3 {[%cal Rb4c5]} cxb4 $1 20. cxb4 {[#] Threatens to win with b5.} Qd7 21. Ne3 e6 22. Nc5 Naxc5 23. bxc5 b6 24. f3 Ng5 25. cxb6 axb6 26. Qb4 b5 27. Rxc8 Rxc8 28. Rb1 Ra8 29. Qxb5 Qxb5 30. Rxb5 Rxa2 $11 {[%mdl 4096] Endgame KRN-KRN} 31. Rb7+ Nf7 32. Kf2 Ra6 33. Nc2 g5 34. Nb4 Rd6 $1 35. Nd3 Kg6 36. h4 h5 37. Rc7 Rb6 38. Nc5 gxh4 39. gxh4 e5 40. Nd3 exd4 41. Nf4+ Kf5 42. Kg3 {[%mdl 1024] White has strong compensation.} ({Not} 42. Rxf7 Kxf4 43. Rd7 Rb5 $17) 42... Ne5 $2 {[%mdl 8192] [#]} (42... Rb8 $16) 43. Rh7 $1 {Accuracy: White = 59%, Black = 47%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.16"]
[Round "7.3"]
[White "Sorokin, Aleksey"]
[Black "Azarov, Sergei"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2513"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,61,12,20,18,18,7,10,16,31,11,11,4,14,8,6,0,0,0,18,17,12,9,9,9,9,8,9,13,10,10,9,8,22,14,14,14,14,12,12,12,12,12,18,11,11,11,11,11,11,0]} 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 b6 7. Rc1 Bb7 8. cxd5 {D37: Queen's Gambit Declined: 5 Bf4} Nxd5 9. Nxd5 Qxd5 10. a3 c5 11. dxc5 (11. Bc4 Qd8 12. O-O Bf6 13. dxc5 Bxb2 14. Rb1 Qxd1 15. Rfxd1 Bxa3 {½-½ (29) Nakamura,H (2743)-So,W (2776) Saint Louis 2019}) 11... Qxd1+ {The position is equal.} 12. Rxd1 Bxc5 13. Bb5 $146 ({Predecessor:} 13. Bd3 Nc6 {1-0 (43) Sarkar,J (2437)-Wang,P (2390) Los Angeles 2013}) 13... a6 14. Bd3 Be7 15. Rc1 {[#] Hoping for Rc7.} Nd7 {[%cal Bb8d7,Bd7c5,Bc5d3][%mdl 32]} 16. Rc7 Nc5 17. Bxh7+ $1 Kxh7 18. Rxe7 Bxf3 19. gxf3 Nd3+ 20. Ke2 Nxf4+ 21. exf4 $11 {[%mdl 4096] Endgame KRR-KRR} Rac8 22. Rd1 Rc5 23. Rb7 Rb5 24. b4 a5 25. Rd4 axb4 $1 26. Rxb4 Ra5 27. a4 g6 28. R4xb6 Rxa4 29. Rxe6 Rxf4 30. Re4 Rf5 31. Rbb4 {Accuracy: White = 76%, Black = 84%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.16"]
[Round "7.4"]
[White "Yoo, Christopher Woojin"]
[Black "Khachiyan, Melikset"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2449"]
[BlackElo "2493"]
[Annotator "TA"]
[PlyCount "55"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,55,0,0,0,21,0,8,0,0,0,22,0,48,56,53,50,43,39,34,46,39,-5,-5,-5,-5,-5,-2,-7,-2,-2,0,-12,0,0,0,-5,0,0,0,0]} 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. Nc3 O-O 10. Be3 {C54: Giuoco Piano: 4 c3 Nf6, main lines with 5 d4 and 5 d3} f5 (10... Bg4 11. h3 Bh5 12. Qc2 Nxc3 13. bxc3 f6 14. exf6 Qxf6 15. Be2 Na5 16. O-O Bxf3 17. Bxf3 c6 {½-½ (39) Dominguez Perez,L (2763)-Grischuk,A (2759) Khanty-Mansiysk 2019}) 11. exf6 (11. g3 {with more complications.} Ba5 12. Rc1 g5 13. h4 f4 14. gxf4 gxf4 15. Bd2) 11... Nxc3 12. bxc3 {Hoping for fxg7.} Qxf6 13. O-O h6 $146 ({Predecessor:} 13... Bg4 14. Be2 Rae8 15. a4 h6 16. h3 Bh5 17. Re1 Kh8 {1-0 (43) Wan,Y (2531)-Garcia,J (2413) Xingtai 2019}) 14. Be2 Ne7 15. Ne5 c6 16. Bd3 Bf5 17. f4 Bxd3 18. Qxd3 Qf5 19. g4 (19. Qd2 {looks sharper.} Ng6 20. Rae1 Nxe5 21. dxe5 g6 22. h3) 19... Qxd3 {The position is equal.} 20. Nxd3 Rae8 21. Rf3 Nc8 22. f5 Nd6 23. Ne5 Ne4 24. Rc1 Ng5 25. Rg3 Ne4 26. Rf3 Ng5 27. Rg3 Ne4 28. Rf3 {Accuracy: White = 64%, Black = 54%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.16"]
[Round "7.5"]
[White "Perez Ponsa, Federico"]
[Black "Harutyunian, Tigran K."]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2560"]
[BlackElo "2542"]
[Annotator "TA"]
[PlyCount "85"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,85,49,29,34,35,34,2,10,16,15,18,133,135,107,126,139,85,83,81,102,58,66,48,50,17,28,34,26,12,13,22,0,0,0,0,0,-5,-18,-68,0,0,0,-13,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,89,98,192,190,465,458,537,532,1353,1301,1250,1055,2259,2144,29975,29976]} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Bc5 6. c3 b5 7. Bc2 d5 {C78: Ruy Lopez: Archangelsk and Möller Defences} 8. d4 dxe4 {[%cal Re5d4]} 9. Nbd2 exf3 {The position is equal.} 10. Qxf3 {[#]} Bxd4 $146 {And now ...Nd5 would win.} ({Predecessor:} 10... Be7 11. Qxc6+ Bd7 12. Qf3 exd4 13. Ne4 O-O 14. Rd1 Re8 15. Rxd4 {1-0 (60) Vachier Lagrave,M (2785)-Jones,G (2625) Caleta 2016}) 11. cxd4 Bd7 (11... Nd5 $1 $11) 12. dxe5 $1 $16 Nd4 13. Qd1 $1 Nxc2 14. Qxc2 ({Better is} 14. exf6 Nxa1 15. fxg7) 14... Nd5 15. Ne4 {Strongly threatening Bg5.} O-O 16. Bg5 (16. Ng5 {seems wilder.} g6 17. Qc5 Bf5 18. Rd1 c6 19. Qxc6 Nb4 20. Qf3) 16... Qe8 17. Nc5 Be6 18. Rfe1 Qc6 19. Rac1 Nb4 20. Qd2 Nxa2 21. Nxe6 Qxe6 22. Rxc7 h6 23. Be7 (23. Bh4 {is interesting.} g5 24. Bg3 Rad8 25. Qa5 Rd4 26. h3) 23... Rfc8 24. Rxc8+ Rxc8 25. Bd6 Qc4 (25... Qf5 $15 26. Qe3 Rc2) 26. h3 Nc1 27. b4 Nd3 28. Ra1 Qe4 29. Qe3 Qxe3 30. fxe3 $11 {[%mdl 4096] Endgame KRB-KRN} Rc6 31. Rd1 $1 {[%cal Rd1d3]} Nb2 32. Rd5 $1 Rc1+ 33. Kf2 Nc4 34. Bc5 Kh7 35. g4 Kg6 {[#]} (35... Rc2+ $11 {keeps the balance.} 36. Kg3 Nd2) 36. Bd4 $1 $16 Rc2+ {[#]} (36... Nd2 $16) 37. Kg3 $1 $18 Rd2 $2 (37... Re2 {might work better.} 38. Rd6+ f6) 38. Rd7 ({Weaker is} 38. Rd6+ Kh7 $18) 38... Rd3 {[#]} 39. e6 $1 {[%mdl 512]} f6 (39... fxe6 40. Rxg7#) 40. Kf2 Rd2+ 41. Ke1 Rd3 42. Rd8 Nxe3 43. e7 {Accuracy: White = 64%, Black = 43%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.17"]
[Round "8.1"]
[White "Erenburg, Sergey"]
[Black "Harutyunian, Tigran K."]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "2581"]
[BlackElo "2542"]
[Annotator "RC"]
[PlyCount "149"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]

1. e4 {[%emt 0:00:00]} e5 {[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} Nc6 {[%emt 0:00:05]} 3. Bb5 {[%emt 0:00:00]} Nf6 {[%emt 0:00:22]} 4. d3 {[%emt 0:00:00]} Bc5 {[%emt 0:00:42]} 5. c3 {[%emt 0:00:00]} O-O {[%emt 0:00:59]} 6. O-O {[%emt 0:00:15]} Re8 {[%emt 0:02:34]} 7. Nbd2 {[%emt 0:01:29]} a6 {[%emt 0:02:21]} 8. Bxc6 {[%emt 0:01:04]} dxc6 {[%emt 0:00:34]} 9. Nc4 {[%emt 0:00:10]} Nd7 {[%emt 0:03:09]} 10. Re1 {[%emt 0:05:45]} b5 {[%emt 0:09:49]} 11. Ncxe5 {[%emt 0:16:00]} Nxe5 {[%emt 0:06:14]} 12. Nxe5 {[%emt 0:00:19]} Bxf2+ {[%emt 0:00:26]} 13. Kxf2 {[%emt 0:00:09]} Rxe5 {[%emt 0:00:06]} 14. Bf4 {[%emt 0:00:53]} Re6 {[%emt 0:04:21]} 15. Kg1 {[%emt 0:08:00]} c5 {[%emt 0:02:05]} 16. Qh5 {[%emt 0:03:29]} Qe7 {[%emt 0:04:27]} 17. a4 {[%emt 0:01:24]} Rb8 {[%emt 0:06:36]} 18. axb5 {[%emt 0:03:29]} Rxb5 {[%emt 0:06:50]} 19. Qe2 {[%emt 0:01:29]} c4 {[%emt 0:01:58]} 20. dxc4 {[%emt 0:02:24]} Rb3 {[%emt 0:01:01]} 21. Rad1 {[%emt 0:11:32]} h6 {[%emt 0:06:15]} 22. Qc2 {[%emt 0:21:31]} Reb6 {[%emt 0:01:52]} 23. Qd3 {[%emt 0:04:24]} Be6 {[%emt 0:01:18]} 24. Qd8+ {[%emt 0:08:22]} Qxd8 {[%emt 0:00:53]} 25. Rxd8+ {[%emt 0:00:01]} Kh7 {[%emt 0:00:11]} 26. Bxc7 {[%emt 0:04:32]} Rb7 {[%emt 0:04:02]} 27. Bf4 {[%emt 0:03:16]} Rxb2 {[%emt 0:09:27]} 28. c5 {[%emt 0:00:01]} Rc2 {[%emt 0:01:32]} 29. c6 {[%emt 0:00:48]} Rb3 {[%emt 0:00:48]} 30. c7 {[%emt 0:02:06]} Rbxc3 {[%emt 0:00:39]} 31. Red1 {[%emt 0:01:22]} Re2 {[%emt 0:01:53]} 32. R8d3 {[%emt 0:01:10]} Rxd3 {[%emt 0:01:59]} 33. Rxd3 {[%emt 0:00:01]} Rxe4 {[%emt 0:00:09]} 34. Rd6 {[%emt 0:00:58]} Rxf4 {[%emt 0:05:07]} 35. Rxe6 {[%emt 0:00:03]} Rc4 {[%emt 0:00:18]} 36. Rxa6 {[%emt 0:00:06]} Rxc7 {[%emt 0:00:06]} 37. Ra4 {[%emt 0:00:25]} g5 {[%emt 0:00:21]} 38. h4 {[%emt 0:00:21]} Kg6 {[%emt 0:01:10]} 39. hxg5 {[%emt 0:00:02]} hxg5 {[%emt 0:00:09]} 40. Kf2 {[%emt 0:00:00]} Kh5 {[%emt 0:00:00]} 41. Rb4 {[%emt 0:03:08]} Rc2+ {[%emt 0:02:00]} 42. Kf3 {[%emt 0:07:02]} Ra2 {[%emt 0:04:42]} 43. Rc4 {[%emt 0:00:13]} f6 {[%emt 0:01:46]} 44. Rb4 {[%emt 0:01:09]} g4+ {[%emt 0:00:13]} 45. Kg3 {[%emt 0:00:28]} Ra3+ {[%emt 0:01:10]} 46. Kh2 {[%emt 0:08:12]} Kh4 {[%emt 0:00:50]} 47. Rf4 {[%emt 0:00:41]} Kg5 {[%emt 0:00:43]} 48. g3 {[%emt 0:02:31]} Ra2+ {[%emt 0:00:22]} 49. Kg1 {[%emt 0:00:01]} f5 {[%emt 0:00:14]} 50. Kf1 {[%emt 0:01:08]} Kf6 {[%emt 0:00:23]} 51. Kg1 {[%emt 0:01:06]} Ke5 {[%emt 0:00:08]} 52. Rf1 {[%emt 0:01:08]} Rd2 {[%emt 0:00:22]} 53. Re1+ {[%emt 0:00:43]} Kd4 {[%emt 0:00:43]} 54. Rf1 Ke4 {[%emt 0:00:33]} 55. Rf4+ {[%emt 0:00:19]} Ke5 {[%emt 0:00:05]} 56. Rf1 {[%emt 0:00:15]} Ra2 {[%emt 0:01:27]} 57. Rf4 {[%emt 0:00:15]} Ra5 {[%emt 0:00:05]} 58. Kg2 {[%emt 0:00:12]} Rb5 {[%emt 0:00:29]} 59. Kg1 {[%emt 0:00:17]} Rd5 {[%emt 0:00:10]} 60. Kg2 {[%emt 0:00:13]} Rd2+ {[%emt 0:01:13]} 61. Kg1 {[%emt 0:00:18]} Re2 {[%emt 0:00:43]} 62. Kf1 {[%emt 0:00:51]} Re3 {[%emt 0:00:09]} 63. Kg2 {[%emt 0:00:05]} Ke6 {[%emt 0:00:05]} 64. Rf2 {[%emt 0:00:18]} Re5 {[%emt 0:00:08]} 65. Kf1 {[%emt 0:00:52]} Ra5 {[%emt 0:00:39]} 66. Kg2 {[%emt 0:00:12]} Ke5 {[%emt 0:00:06]} 67. Rf4 {[%emt 0:00:08]} Ra2+ {[%emt 0:00:04]} 68. Kg1 {[%emt 0:00:18]} Rd2 {[%emt 0:00:05]} 69. Kf1 {[%emt 0:00:20]} Rd4 {[%emt 0:00:14]} 70. Rf2 {[%emt 0:00:11]} Ke4 {[%emt 0:00:07]} 71. Rf4+ {[%emt 0:00:06]} Ke3 {[%emt 0:00:11]} 72. Rxf5 {[%emt 0:00:17]} Rd1+ {[%emt 0:00:03]} 73. Kg2 {[%emt 0:00:07]} Rd2+ {[%emt 0:00:03]} 74. Kg1 {[%emt 0:00:11]} Rd1+ {[%emt 0:00:03]} 75. Kg2 {[%emt 0:00:07]} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.17"]
[Round "8.2"]
[White "Khachiyan, Melikset"]
[Black "Perez Ponsa, Federico"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2493"]
[BlackElo "2560"]
[Annotator "TA"]
[PlyCount "83"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 13,83,6,20,13,20,11,20,0,0,0,8,0,0,0,0,0,0,0,0,-10,-12,-10,-6,-12,14,16,20,0,0,0,0,0,14,8,5,-6,-4,-12,0,-2,-1,-1,0,0,-1,-5,-7,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 a6 6. Bxd7+ Bxd7 7. Nc3 e5 {The position is equal.} 8. Qd3 {B51: Sicilian: Moscow Variation (3 Bb5+) without 3...Bd7} Rc8 9. O-O Qc7 10. a4 Be6 {Threatening ...Bc4.} 11. Rd1 Nf6 12. Bg5 $146 ({Predecessor:} 12. Nd2 Be7 13. Nf1 Qc4 14. Ne3 Qxd3 15. Rxd3 Kd7 {½-½ (33) Xiong,J (2656)-Vachier Lagrave,M (2780) Douglas 2018}) 12... Nh5 13. Rac1 h6 {[#] And now ...Bc4 would win.} 14. Be3 Nf6 15. Nd2 Be7 16. Nd5 Bxd5 17. exd5 Ng4 18. c4 Nxe3 19. fxe3 O-O 20. Rf1 Qd7 21. b3 Bg5 22. Ne4 f5 23. Nxg5 hxg5 24. c5 dxc5 25. d6 Qe6 26. Rfd1 Rfd8 27. Qd5 Qxd5 28. Rxd5 $11 {[%mdl 4096] Endgame KRR-KRR} Kf7 {White should prevent ...Ke6.} 29. Rxe5 Kf6 30. Rd5 Rc6 31. g4 g6 32. d7 Ke6 33. Rcd1 b5 34. axb5 axb5 35. e4 fxe4 36. Rxg5 Kf6 37. Rgd5 c4 38. bxc4 bxc4 39. Kf2 c3 {[%cal Bc4c3,Bc3c2][%mdl 32]} 40. Ke3 c2 41. Rc1 Ke6 42. Rd2 {Accuracy: White = 65%, Black = 68%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.17"]
[Round "8.3"]
[White "Azarov, Sergei"]
[Black "Yoo, Christopher Woojin"]
[Result "1-0"]
[ECO "B04"]
[WhiteElo "2586"]
[BlackElo "2449"]
[Annotator "TA"]
[PlyCount "157"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 19,157,39,31,39,37,39,45,27,39,42,33,38,52,31,65,72,62,14,82,68,85,95,108,-15,-14,-6,-16,-10,52,48,61,57,43,55,48,45,57,47,120,139,133,119,144,144,144,137,144,137,235,235,218,220,464,473,557,541,486,198,182,141,207,99,87,87,87,69,85,39,39,39,39,6,6,6,14,0,0,0,0,0,0,0,0,0,11,21,22,0,0,0,0,0,6,0,0,0,0,0,0,0,299,0,114,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,220,644,12845,12845,12847,12847,12849,12849,12849,12850,12850,12850]} 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. c4 Nb6 6. exd6 cxd6 7. h3 Bg7 8. Nc3 O-O 9. Be2 Nc6 10. O-O Bf5 11. d5 {B04: Alekhine's Defence: 4 Nf3} (11. Be3 d5 12. c5 Nc4 13. Bc1 b6 14. cxb6 axb6 15. Qb3 e6 16. Bxc4 Na5 17. Qd1 Nxc4 18. Qe2 h5 19. Bg5 f6 20. Bf4 g5 21. Bh2 Qd7 22. b3 Na3 {0-1 (57) Liang,A (2569)-Gareyev,T (2595) Middleton 2018}) 11... Na5 12. Nd4 $1 Naxc4 13. a4 {White is slightly better.} a5 14. Nxf5 gxf5 15. Re1 Qd7 16. Bd3 {[%mdl 1024] White has compensation.} Kh8 $146 ({Predecessor:} 16... Ne5 17. Bb5 Qc7 18. Qh5 e6 {0-1 (64) Adhami,V (2335)-Urday Caceres,H (2430) Thessaloniki 1988}) 17. Qh5 e6 18. Qh4 Rac8 (18... Ne5 $11 19. Bb5 Qc7) 19. Bg5 $1 $16 Rg8 20. Kh1 Rc5 21. Ne2 (21. Bf6 $16 Ne5 22. Bb5) 21... Ne5 $1 $11 {[%cal Re5d3]} (21... Bxb2 $6 22. Rab1 $16) (21... Nxb2 $6 22. dxe6 fxe6 23. Nf4 $14) (21... exd5 $2 22. Nd4 $18) 22. Bb5 Qc7 23. dxe6 fxe6 ({Black should try} 23... Ng6 $11 24. Qh5 fxe6) 24. Nf4 $14 Qf7 25. Qh5 Qxh5 26. Nxh5 Nd5 27. Rad1 Bf8 {[#]} 28. Rxd5 $1 {[%mdl 512]} Rxg5 (28... exd5 $2 {is the wrong capture.} 29. Bf6+ Bg7 30. Nxg7 $18) (28... Rxd5 $14 29. Bf6+ Bg7 $1 {[%mdl 512]}) (28... Rxd5 29. Bf6+) 29. Rxc5 $16 dxc5 30. Nf4 $1 {[%cal Rf4e6]} Bd6 31. Nxe6 Rg8 32. Rd1 Nf7 33. f4 Rg6 (33... Bb8 $16 34. Rd5 (34. Nxc5 Nd6 $16) 34... b6 35. Rxf5 Nd6) 34. Bc4 $18 b6 35. Rd3 Bb8 $2 (35... Rg8 36. Ng5 Nxg5) 36. Rd7 Nd6 37. Bd5 Ne4 {[#] intending ...Nf6.} 38. Rb7 (38. Ng5 $142 $1 {[%mdl 512]} Nxg5 39. Rd8+ {[%mdl 64] Double Attack} (39. fxg5 Rd6 $11) 39... Kg7 40. fxg5 (40. Rxb8 Ne6 $14) 40... Rxg5 41. Rxb8) 38... Bd6 39. Kg1 c4 (39... h5 $16 40. Rf7 (40. Rxb6 Bxf4 41. Ra6 Bd2 $16) 40... c4) 40. Bxc4 (40. Nd8 $1 $18 {[%cal Rd8f7] and White stays clearly on top. Threatening mate with Nf7+.} Bc5+ 41. Kf1) 40... Nc5 $16 41. Rxb6 Bxf4 42. Rc6 Nxe6 43. Bxe6 $14 {[%mdl 4096] Endgame KRB-KRB} Kg7 44. Kf1 h5 45. Rc4 Rxe6 46. Rxf4 $11 {KR-KR} Kg6 47. Rf3 Rb6 48. b3 Rb4 49. Rc3 Kf6 50. Kf2 h4 51. Ke2 Re4+ 52. Kd2 Rb4 53. Rc6+ Kg5 54. Kc3 {aiming for Rc5.} Rb8 55. Rc5 Ra8 56. b4 axb4+ 57. Kxb4 Kf4 58. Rc3 Rb8+ 59. Ka3 {Strongly threatening a5.} Ra8 $2 {[%mdl 8192]} (59... Ke4 $11 {and Black has nothing to worry.}) 60. Rb3 $2 (60. Rf3+ $1 $18 Ke4 61. Rf2) 60... Ke5 (60... Ke4 $11 {keeps the balance.}) 61. Kb4 (61. Re3+ $1 $16 Kd6 62. Re2) 61... Rb8+ $1 62. Kc3 Rg8 63. Rb2 Kf4 64. a5 {Ra2 is the strong threat.} Kg3 65. a6 Ra8 66. Ra2 f4 $1 67. Kd4 {Black must now prevent a7.} f3 68. gxf3 Kxh3 69. Ke3 {Hoping for Kf2.} Kg3 70. Ra4 {Threatens to win with a7.} h3 71. Rg4+ Kh2 72. Rg6 {And now f4 would win.} Rb8 73. f4 Kh1 $2 {[#]} (73... Rb3+ $11 {and Black stays safe.} 74. Ke2 Ra3) 74. a7 $1 $18 {[%cal Ra7b8]} Ra8 {[#]White is clearly winning.} 75. Rg7 $1 h2 76. Kf3 {White wants to mate with Re7.} Rf8 77. Rb7 {[%cal Rb7b1]} Rg8 78. Rb1+ Rg1 79. a8=Q {Accuracy: White = 63%, Black = 66%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.17"]
[Round "8.4"]
[White "Moradiabadi, Elshan"]
[Black "Sorokin, Aleksey"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "2552"]
[BlackElo "2513"]
[Annotator "TA"]
[PlyCount "43"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,43,16,0,7,0,0,0,6,-36,-15,-11,0,0,13,0,50,47,55,62,75,64,297,299,304,314,411,266,458,467,1261,1259,1173,1153]} 1. c4 Nf6 2. Nc3 c5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc7 6. d3 e5 7. Nh3 Be7 {A34: Symmetrical English: 2 Nc3, lines with ...d5} 8. O-O (8. f4 exf4 9. Nxf4 O-O 10. O-O Nc6 11. Be3 Bd7 12. Kh1 Nd4 13. Bxb7 Rb8 14. Bg2 Rxb2 15. Rb1 {1-0 (32) Beliavsky,A (2519)-Jelen,I (2350) Slovenia 2019}) 8... Nc6 9. f4 exf4 {The position is equal.} 10. gxf4 O-O 11. f5 $146 ({Predecessor:} 11. Kh1 f5 12. Be3 Rb8 13. Rc1 Nd4 14. Bg1 Bf6 15. e4 {0-1 (29) Gromek,J-Witkowski,S Piotrkow Trybunalski 1970}) 11... Nd4 12. e4 $1 b5 {[%cal Bb7b5,Bb5b4][%mdl 32]} 13. Bf4 b4 14. Bxc7 Qxc7 15. Nd5 Qe5 {[#]} 16. Nf2 $1 $36 {[%cal Rf2g4][%mdl 2048] Black must now prevent Ng4. Black is under pressure.} Nc6 $2 {[#]} ({Black should try} 16... Bd8 $14) 17. d4 $1 $18 {[%cal Rd4e5][%mdl 512]} Qb8 (17... cxd4 18. Ng4) 18. Qh5 f6 19. Ng4 Bb7 $2 {[#]} (19... Ba6 {might work better.} 20. Rfc1 Qe8 21. Qxe8 Raxe8) 20. e5 $1 {[%mdl 512] White is clearly winning.} Kh8 (20... Qe8 $142 21. Qh4 Kh8) (20... fxe5 21. f6) 21. Nf4 Qd8 {[#]} 22. Bd5 $1 {[%mdl 512] Accuracy: White = 82%, Black = 13%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.17"]
[Round "8.5"]
[White "Wang, Justin"]
[Black "Cordova, Emilio"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2459"]
[BlackElo "2570"]
[Annotator "TA"]
[PlyCount "88"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 23,88,7,14,4,0,0,12,0,0,5,11,0,3,-4,0,-7,0,0,0,0,14,0,0,-18,-18,-8,0,-38,-38,-38,-38,-38,-57,-54,-59,-53,-22,-28,-31,-30,-30,-32,-39,-27,-22,-29,-24,-166,-182,-158,-173,-494,-442,-599,-585,-582,-584,-770,-621,-29966,-29961,-5933,-5624,-29981,-29982,-29981,-29982]} 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} (13. Qf3 Be6 14. Rd1 Bxd5 15. cxd5 Na7 16. g3 Rc8 17. Ne3 O-O 18. h4 Rc5 19. Bd3 Nc8 20. O-O Qc7 {½-½ (31) Nakamura,H (2746)-Caruana,F (2828) Saint Louis 2019}) 13... O-O 14. Bg2 g6 15. O-O {The position is equal.} Bg7 16. Qd3 Be6 17. Rad1 Qb8 18. Nce3 $146 ({Predecessor:} 18. b3 Qa7 19. Kh1 Rad8 20. Nce3 Nd4 21. f4 f5 22. Bh3 Qd7 23. Rde1 Kh8 24. Qb1 Rf7 25. Rf2 Rdf8 {½-½ (26) Agmanov,Z (2394)-Ismagambetov,A (2554) Almaty 2019}) 18... Qa7 19. Kh1 Kh8 20. b3 Nd4 21. f4 f5 22. fxe5 dxe5 23. Nc2 fxe4 24. Bxe4 Bg4 {[#] Hoping for ...Rxf1+.} (24... Bh3 {keeps more tension.} 25. Rxf8+ Rxf8 26. Nxd4 Qxd4 27. Qxd4 exd4 28. Nf4 Bg4) 25. Nxd4 Qxd4 26. Qxd4 exd4 27. Rxf8+ Rxf8 28. Rd2 Re8 29. Bd3 $1 Bf3+ 30. Kg1 Bh6 31. Nf4 g5 32. Nd5 g4 33. Nf4 Kg7 34. Kf2 Kf6 35. Bc2 (35. h3 $11 {and White is okay.}) 35... Bxf4 $1 $19 36. gxf4 {[%mdl 4096] Endgame KRB-KRB} h5 37. h3 $2 {[#]} (37. c5 {is more resistant.}) 37... Re3 $1 38. hxg4 hxg4 39. c5 Rc3 40. Bd3 Bc6 41. Be2 g3+ 42. Kg1 Rc1+ 43. Rd1 Rxd1+ 44. Bxd1 Kf5 {Accuracy: White = 31%, Black = 78%.} 0-1

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.18"]
[Round "9.1"]
[White "Cordova, Emilio"]
[Black "Erenburg, Sergey"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2570"]
[BlackElo "2581"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,107,5,10,0,0,0,0,0,0,0,0,0,13,10,11,12,2,29,27,29,20,29,20,20,70,70,81,75,62,58,71,75,81,67,88,45,43,34,59,42,56,43,129,121,173,166,226,202,495,295,298,311,322,304,319,323,323,317,315,303,307,317,321,293,311,286,233,195,323,247,419,418,444,444,395,444,419,399,506,506,498,498,316,237,6697,5358,5210,4256,2639,2509,29964,29970,29982,29982,29984,29985,29985,29986,29986,29985]} 1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. g3 dxc4 5. Bg2 b5 6. O-O {D11: Slav Defence: 3 Nf3 sidelines and 3...Nf6 4 e3 Bg4} Bb7 (6... e6 7. a4 Bb7 8. Ne5 a6 9. b3 cxb3 10. Qxb3 Be7 11. Nc3 b4 12. Rd1 a5 13. Bg5 O-O 14. Bxf6 gxf6 {1-0 (37) Mchedlishvili,M (2603)-Eljanov,P (2711) Riadh 2017}) 7. b3 cxb3 $1 8. Qxb3 {The position is equal.} e6 9. Rd1 Be7 10. Ne5 O-O 11. Nc3 $36 {[%mdl 2048] White fights for an advantage.} a6 12. Ne4 Nbd7 $146 ({Predecessor:} 12... a5 13. a4 {1-0 (13) Orsteinsson,O (2459)-Dorner,S (2213) ICCF email 2016}) 13. Nxc6 Bxc6 14. Nxf6+ Nxf6 15. Bxc6 Rc8 16. Bb7 {[%mdl 64] Double Attack} Rc4 17. Bxa6 Rb4 18. Qd3 $1 {Threatens to win with a3.} Qb6 {aiming for ...Rc4.} 19. Ba3 $1 {[%cal Ra3b4]} Qxa6 20. Bxb4 Bxb4 {[#]} 21. a4 $1 {[%mdl 512]} Nd5 (21... bxa4 22. Qxa6) 22. axb5 Qb7 $1 23. Rdc1 Rb8 24. e4 Nb6 25. Rc6 g6 ({Black should try} 25... Nd7 $14) 26. Rac1 $1 $16 Qd7 {[#]} (26... Qe7 $16 {was called for.}) 27. d5 $1 $18 {[%mdl 512]} Bf8 {[#]} (27... exd5 {was necessary.} 28. Qd4 Ba3) 28. Rc7 $1 {[%cal Rc7d7]} Qd6 $2 (28... Qd8) 29. R1c6 (29. Qf3 $142 f5 30. R1c6) 29... Qd8 {[%cal Re6d5]} 30. Qf3 Nd7 31. dxe6 Ne5 32. exf7+ Kg7 33. Qc3 Rxb5 34. Rc5 ({Worse is} 34. f4 Qd1+ 35. Kg2 (35. Kf2 Qh1 $11) 35... Qe2+ 36. Kh3 Qh5+ 37. Kg2 Qe2+ 38. Kh3 Qf1+ 39. Kh4 Qe2 $11) 34... Rxc5 35. Rxc5 Qd1+ 36. Kg2 Qf3+ 37. Qxf3 Nxf3 38. Rc7 Ng5 (38... Ne1+ {keeps fighting.} 39. Kf1 Nd3) 39. e5 h5 $2 (39... Ne6 40. Ra7 h5) 40. f4 Ne6 41. Rd7 Ba3 42. Kf3 Kf8 43. h3 Be7 44. g4 hxg4+ 45. hxg4 Ng7 46. Ra7 Bc5 $2 (46... Kxf7 47. Ke4 Ne8) 47. Ra6 Kxf7 48. Rf6+ Ke7 49. Rxg6 Kf7 50. f5 {White mates.} Bd4 51. Ke4 Bb2 52. Rb6 Bc3 53. Rb7+ Kf8 54. Kd5 {Accuracy: White = 93%, Black = 55%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.18"]
[Round "9.2"]
[White "Sorokin, Aleksey"]
[Black "Wang, Justin"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2513"]
[BlackElo "2459"]
[Annotator "TA"]
[PlyCount "121"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,121,12,14,12,22,12,38,46,33,37,75,69,81,42,46,31,78,45,101,69,139,147,140,130,213,97,105,70,101,118,190,192,212,201,200,190,278,218,225,186,240,205,227,217,197,210,180,197,228,231,233,223,226,241,250,219,198,139,141,137,248,225,219,138,240,147,216,191,321,332,577,578,570,567,576,569,661,317,420,313,486,292,310,248,305,441,413,399,427,424,663,27,40,0,1192,1195,29968,29970,5057,-8,-8,-617,-8,-8,-8,-8,0,0,0,-8,0,0]} 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} (7. Be2 dxc4 8. O-O c5 9. dxc5 Nxc5 10. Bxc4 Qxd1 11. Rfxd1 b6 12. Bd6 Bxd6 13. Rxd6 Bb7 14. Rad1 Bxf3 15. gxf3 Rfc8 16. Be2 g5 17. R6d4 Kf8 18. f4 gxf4 19. Rxf4 {1-0 (67) Ding,L (2811)-Firouzja,A (2702) Khanty-Mansiysk 2019}) 7... c5 8. cxd5 exd5 9. Be2 {White is slightly better.} c4 10. Ne5 $146 ({Predecessor:} 10. O-O Nb6 11. a4 Be6 12. a5 Nc8 13. b3 Ne4 14. Nxe4 dxe4 15. Nd2 cxb3 16. Nxe4 {Mashin,A (2216)-Agrawal,R (1913) ICCF email 2016}) 10... Qa5 11. O-O Rd8 12. b4 {[%cal Bb2b4,Bb4b5][%mdl 32]} Qb6 13. Bg5 Nf8 14. f4 Ne6 (14... h6 $14) 15. Kh1 a5 (15... h6 $14 16. Bh4 Nc7) 16. b5 $1 $16 Nc7 17. f5 a4 {[#]} (17... Nxb5 $2 18. Qb1 $18) (17... h6 $16 18. Bh4 Rf8) 18. Bh5 (18. Bxc4 $1 $18 {[%mdl 512]} h6 (18... dxc4 19. Nxc4) 19. Bh4 (19. Bxf6 Bxf6 20. Ba2 Bxe5 $16)) 18... Rf8 19. Bf3 Rd8 (19... Nxb5 $2 20. Qb1 $18) 20. Qc2 (20. Nxa4 Qxb5 21. Nc3 Qb2 $15) 20... Qa5 (20... Ra5 $16 {was worth a try.}) 21. Ng4 $18 Qb6 22. Nxf6+ (22. Nxa4 Qxb5 23. Nxf6+ Bxf6 $11) 22... gxf6 23. Bh4 Qa5 (23... Ra5 {was necessary.} 24. Rfb1 Bf8) 24. Be1 Qb6 25. Bg3 Bd6 26. Bh4 Bf8 27. Rab1 (27. Nxa4 $6 Qxb5 28. Bxf6 Re8 $16) 27... Bxa3 28. Nxa4 Rxa4 29. Qxa4 Bf8 30. Qc2 Bh6 31. Rfe1 Ne8 32. Bf2 Qa5 33. Red1 Nd6 34. Be1 (34. Bxd5 $18 {Hoping for e4.} Bxf5 35. e4) 34... Qb6 $16 35. g4 $1 ({Don't do} 35. Bxd5 $6 Nxf5 36. Qxc4 Nxe3 $14) 35... Bxe3 (35... Nxb5 $16 36. Qa2 (36. Qa4 Bd7 $14) 36... Bd7) 36. Bxd5 $18 Bd7 37. Bg2 Bxb5 (37... Rc8 $16 38. Bb4 Nxb5) 38. Bc3 Qc7 (38... Rc8 $16 39. Qb2 Qc7) 39. d5 Rc8 (39... Bg5 $142 40. Ra1 Bh4) 40. Re1 ({Less strong is} 40. Bxf6 c3 $16) 40... Bf4 $2 (40... Qb6 41. Qb2 Bg5 42. Bxf6 Bxf6 43. Qxf6 Qd8) 41. Qf2 Be5 42. Bxe5 fxe5 43. f6 Kh8 {[#]} 44. Qh4 (44. Rxb5 $142 $1 {[%mdl 512]} Nxb5 45. Be4) 44... Ba4 45. Rbc1 Qb6 (45... Qc5 {was called for.} 46. Rxe5 Qd4) 46. Rxe5 {Threatens to win with Qh6!} Qd4 47. Rce1 Bc2 48. Qg5 {[%csl Gf6][%cal Rg5g7]} Bg6 49. h4 {Black must now prevent h5.} Rg8 {intending ...c3.} 50. Kh2 Qc3 (50... c3 $142 51. h5 h6) 51. Qh6 $2 (51. Qf4 $18) 51... Qd4 $1 $11 52. h5 Bd3 $2 {[%mdl 8192] [#]} (52... Bf5 $11 53. Qe3 (53. gxf5 $2 Qf2 $19 {[%mdl 64] Double Attack}) 53... Qxg4 {[%mdl 64] Double Attack}) 53. Re8 $3 $18 {[%mdl 512]} Nxe8 {[#]} 54. Rxe8 $1 {[%csl Gf6][%cal Rh6g7][%mdl 512]} Qxg4 (54... Rxe8 55. Qg7#) 55. Qg7+ $2 ({White must play} 55. Rxg8+ $18 Qxg8 56. d6) 55... Qxg7 $11 56. fxg7+ Kxg7 {[#] KRB-KRB} 57. h6+ $1 {[%mdl 512] The position is equal.} Kh8 $1 (57... Kxh6 58. Rxg8) 58. Re7 $1 Rg6 59. Re8+ Rg8 60. Re7 $1 Rg6 61. Re8+ {Accuracy: White = 55%, Black = 38%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.18"]
[Round "9.3"]
[White "Yoo, Christopher Woojin"]
[Black "Moradiabadi, Elshan"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2449"]
[BlackElo "2552"]
[Annotator "TA"]
[PlyCount "107"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,107,12,38,41,33,33,19,47,51,39,61,43,51,38,51,22,22,13,21,-6,-18,-12,-24,-57,0,0,0,-69,-76,-79,-66,-154,-153,-131,-95,-91,0,0,0,-56,0,0,0,0,0,0,190,145,439,243,241,240,237,206,230,216,325,321,331,331,331,329,324,322,421,458,273,267,461,447,455,454,454,302,302,302,302,309,310,0,322,274,337,321,624,627,624,624,615,615,595,566,767,764,767,767,764,754,725,725]} 1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Rg1 (5. Bc4 Be7 6. O-O O-O 7. a4 c6 8. Re1 h6 9. h3 Re8 10. dxe5 Nxe5 11. Nxe5 dxe5 12. Qf3 Bb4 13. Rd1 Qe7 14. Ne2 Be6 15. Bxe6 Qxe6 16. Ng3 Bc5 17. Be3 Bxe3 18. Qxe3 {½-½ (68) Dominguez Perez,L (2752)-Rapport,R (2739) Hengshui 2019}) 5... g6 6. g4 {C41: Philidor Defence} Bg7 7. g5 Nh5 8. Be3 {The position is equal.} c6 9. Qd2 Qc7 10. O-O-O O-O 11. a3 $146 ({Predecessor:} 11. d5 c5 12. Nh4 Nf4 {0-1 (37) Jakubiec,A (2472)-Zochowski,K (2267) Jastrzebia Gora 2019}) 11... Re8 12. Be2 Nb6 13. h4 Be6 14. b3 Rad8 15. a4 a6 16. a5 Nc8 (16... Nd7 $15) 17. Na4 $1 $11 Nf4 18. Bxf4 ({Better is} 18. Bf1 $1 $11) 18... exf4 $15 19. h5 c5 20. hxg6 (20. Qxf4 $15 Qxa5 21. h6) 20... hxg6 $17 21. Rh1 Bd7 22. Qxf4 {Threatens to win with Rh7!} Bxa4 (22... Bc6 $1 $17 23. Nd2 cxd4) 23. bxa4 $11 cxd4 24. Rh3 (24. Bd3 $11) 24... Qe7 ({Black should play} 24... d3 $1 $15 25. Bxd3 Qxa5) 25. Rdh1 Qxe4 26. Qh2 $1 {Threatening mate with Rh8+!} (26. Qxe4 Rxe4 27. Bd3 Rf4 $17) 26... Kf8 (26... Qxe2 27. Rh8+ $1 {[%mdl 512]} Bxh8 28. Qxh8#) 27. Bc4 {Black must now prevent Nd2.} Ne7 $2 (27... d3 $11 {and Black has nothing to worry.} 28. Re1 Qxe1+ 29. Nxe1 Rxe1+ 30. Kd2 dxc2 31. Kxc2 Ne7) 28. Rh7 $1 $40 {[%cal Rh7g7][%mdl 128] Rxg7! would kill now. White goes for the king.} Nf5 $2 {[%mdl 8192] [#]} (28... Rc8 $2 29. Rxg7 $1 {[%mdl 512]} Nd5 30. Rxf7+ $3 {[%mdl 512]} Kxf7 31. Bxd5+ Qxd5 32. Qh7+ Ke6 33. Re1+ Qe5 34. Nxe5 $18) (28... Qxf3 $16 {was worth a try.} 29. Rxg7 Nd5 30. Rxf7+ (30. Rg8+ Ke7 $11) 30... Qxf7 31. Bxd5 Qg7) 29. Re1 (29. Rxg7 $142 $1 {[%mdl 512]} Nxg7 30. Re1 Qxe1+ 31. Nxe1) 29... Qxe1+ (29... Qxf3 30. Rh8+ $1 {[%mdl 512]} Bxh8 31. Qxh8#) 30. Nxe1 d5 31. Bd3 $1 {[%cal Rd3f5]} Rxe1+ 32. Kd2 $1 Re6 ({Wrong is} 32... Be5 $2 33. f4 $18) (32... Rde8 $142 33. Bxf5 (33. Rh8+ Bxh8 34. Qxh8+ Ke7 $11) 33... gxf5 34. Rh8+ Bxh8 35. Qxh8+ {[%mdl 64] Double Attack} Ke7 36. Qf6+ (36. Qxd4 Re6 $16) 36... Kd7 37. Qxf7+ {[%mdl 64] Double Attack} Kc6 38. Qxf5 R1e5 39. Qf6+ R8e6) 33. Qc7 Rde8 34. Qxb7 (34. Bxf5 gxf5 35. Qxb7 Re2+ 36. Kd3 (36. Kc1 Re1+ 37. Kd2 R1e2+ {[%mdl 64] Double Attack} 38. Kc1 Re1+ 39. Kd2 R8e2+ 40. Kd3 Re4 $18) 36... Re1 $16) 34... Kg8 35. Rh1 Nd6 36. Qxd5 Ne4+ 37. Bxe4 $1 Rxe4 {[#]} 38. Kd3 $1 R4e5 $2 {[#]} (38... Re2 39. Qc6 R2e6) 39. Qc6 $1 R5e6 40. Qb7 R8e7 41. Qc8+ Re8 42. Qc4 Rb8 43. Rh3 Rbe8 44. Rh1 Rb8 $1 45. Qd5 Bh8 46. Ra1 Rc8 $2 (46... Ree8 47. Qc4 Bg7 48. Qxa6 Rec8) 47. Rb1 {White is clearly winning.} Re5 48. Qd7 Rec5 49. Rb7 {[%csl Gb7][%cal Rd7f7]} Rf8 50. Ra7 Rxa5 51. Qc6 Rxg5 52. Rxa6 Rf5 53. Ra8 Bf6 54. Rxf8+ {Accuracy: White = 67%, Black = 54%.} 1-0

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.18"]
[Round "9.4"]
[White "Perez Ponsa, Federico"]
[Black "Azarov, Sergei"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2560"]
[BlackElo "2586"]
[Annotator "TA"]
[PlyCount "61"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 10,61,6,4,15,26,19,14,17,23,5,12,54,38,43,34,21,33,36,39,105,67,72,45,60,64,75,74,66,32,28,23,23,18,80,16,64,53,58,16,97,63,59,40,44,27,44,44,35,5,19,10,2,-26]} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 d6 6. e5 dxe5 {E32: Nimzo-Indian: Classical (4 Qc2): 4...0-0} 7. dxe5 Ng4 (7... Nfd7 8. Nf3 Nc6 9. Ng5 g6 10. f4 Nc5 11. Be3 f6 12. exf6 Qxf6 13. O-O-O Bxc3 14. Qxc3 Qxc3+ 15. bxc3 {1-0 (25) Vallejo Pons,F (2695)-Predke,A (2622) St Petersburg 2018}) 8. Nf3 Nc6 9. Bf4 Nd4 $132 {[%mdl 2048] Black is not holding back} 10. Qd2 f6 11. O-O-O {[#] h3 is the strong threat.} c5 12. h3 Nxe5 13. Nxe5 fxe5 14. Bxe5 {[#]} b5 $146 (14... Bd7 $14) 15. Bd3 {Black must now prevent Be4.} ({Of course not} 15. Bxd4 $6 cxd4 16. Qxd4 Qxd4 $11) 15... Bb7 16. Rhe1 (16. cxb5 {with more complications.} a6 17. b6 Rc8 18. h4 Rf7 19. h5) 16... bxc4 17. Bxc4 Bd5 18. Bxd5 exd5 19. Bxd4 cxd4 20. Qxd4 {[%mdl 64] [#] Double Attack} Bxc3 21. bxc3 Rc8 (21... Qg5+ $11 22. f4 Qg3) 22. Kb2 (22. f3 $16) 22... Kh8 23. f3 Qc7 24. Rc1 h6 (24... Rf4 $6 25. Qxd5 Rc4 26. Qb5 $16) (24... Qb7+ $11 {keeps the balance.} 25. Ka1 (25. Qb4 Qa6 $14) 25... Rc4) 25. Ka1 ({Much worse is} 25. Qxd5 $6 Rfd8 $11) 25... Qf7 26. Red1 Rfd8 27. Rb1 Rd7 28. Rb5 {[%cal Rb5d5]} Qg6 29. Rb2 Rdc7 30. Rc1 Rc5 31. g4 {Accuracy: White = 40%, Black = 34%.} 1/2-1/2

[Event "Winter Chess Classic-B 2019"]
[Site "Saint Louis"]
[Date "2019.11.18"]
[Round "9.5"]
[White "Harutyunian, Tigran K."]
[Black "Khachiyan, Melikset"]
[Result "1/2-1/2"]
[ECO "D78"]
[WhiteElo "2542"]
[BlackElo "2493"]
[Annotator "TA"]
[PlyCount "104"]
[EventDate "2019.11.10"]
[EventType "tourn"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 11,104,16,9,-10,0,-17,-8,-18,-22,-35,0,0,0,0,0,0,0,0,0,-12,0,-16,0,-6,-6,-6,-1,-9,0,0,0,14,33,40,39,40,73,73,73,85,81,81,81,81,81,83,90,91,93,86,77,77,85,77,124,124,135,128,130,132,132,132,132,53,53,7,14,0,0,0,25,0,0,0,39,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. c4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 g6 5. O-O Bg7 6. d4 O-O 7. a4 {D78: Fianchetto Grünfeld: 6 0-0 c6} Bf5 8. Qb3 $146 ({Predecessor:} 8. b3 Nbd7 9. Ba3 Re8 10. Nc3 Ne4 11. Rc1 Nxc3 12. Rxc3 Be4 13. e3 e5 14. cxd5 cxd5 15. dxe5 Nxe5 16. Nxe5 Bxe5 {1-0 (28) Ding,L (2811)-Shankland,S (2705) chess.com INT 2019}) 8... Qb6 9. Qxb6 axb6 10. cxd5 cxd5 11. Nc3 Nc6 12. Bf4 Rfc8 13. Rfc1 h6 14. h4 Nb4 15. Ne1 e6 16. Ra3 {[%cal Ba1a3,Ba3b3,Bb3b6][%mdl 32]} Rc4 17. Rb3 Nc6 {[%cal Bb4c6,Bc6d4,Bd4c2][%mdl 32]} 18. Rxb6 Nxd4 {Strongly threatening ...Rxc3!} 19. Bf1 Nd7 20. Rxb7 Nc5 {[%mdl 64] Double Attack} 21. Rc7 $1 Nxa4 (21... g5 {is more complex.} 22. hxg5 hxg5 23. Bxg5 Ndb3 24. e4 Nxe4 25. Bxc4 Nxc1 26. Nxe4 Bxe4 27. Bxc1 dxc4 28. Rxc4 f5) 22. Rxc4 dxc4 23. Ra1 $36 {[%mdl 2048] White has the initiative.} Nc2 24. Rxa4 Rxa4 25. Nxa4 {And now Nf3 would win.} Nxe1 26. Bd2 Nc2 {[#]} 27. Bc3 $1 Bxc3 28. Nxc3 $16 {[%mdl 4096] Endgame KBN-KBN} e5 29. e4 Be6 30. Nd5 Bxd5 31. exd5 {KB-KN} Kf8 32. Bxc4 Ke7 33. d6+ Kxd6 34. Bxf7 g5 35. hxg5 hxg5 {[#]} 36. Bg6 $1 {[%cal Rg6c2]} Nb4 37. Be4 (37. Kg2 $16) 37... Kc5 $1 $14 38. Kf1 Kd4 39. Bb1 e4 40. Ke2 Nc6 41. Bc2 Nb4 42. Bb1 (42. Kd2 {is interesting.} g4 43. Bd1 Nd3 44. Bxg4 Nxb2 45. Be2) 42... Nc6 43. f3 exf3+ {The position is equal.} 44. Kxf3 {aiming for Kg4.} Ne5+ 45. Ke2 Nc6 46. Bh7 Ne5 47. Bf5 Nc6 48. Bd7 Nb4 49. Be8 Nd3 50. Kf3 Nxb2 51. Kg4 Ke5 52. Kxg5 Nc4 {Accuracy: White = 52%, Black = 68%.} 1/2-1/2

