[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.1"]
[White "Zontakh, Andrey"]
[Black "Kovalenko, Igor"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "2485"]
[BlackElo "2674"]
[Annotator "TA"]
[PlyCount "62"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 17,89,66,91,81,83,76,101,81,76,71,71,80,71,63,61,27,37,-21,-6,-26,0,-45,-44,-138,-102,-115,-111,-252,-258,-237,-246,-241,-235,-235,-217,-207,-222,-182,-139,-140,-145,-133,-82,-219,-197,-275,-277,-297,-315,-266,-294,-293,-306,-294,-278,-410,-387,-424,-413,-550,-527,-771,-750,-698,-759,-728,-720,-708,-713,-1017,-953,-1311,-1284,-2479]} 1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 d6 6. h3 O-O 7. Nf3 e6 8. Bd3 Na6 9. O-O e5 10. a3 {E90: King's Indian: Classical: Early deviations and 6 h3} Ne8 (10... Kh8 11. Bg5 h6 12. Be3 Ng8 13. Nh2 h5 14. f4 Bh6 15. Qd2 Kg7 16. fxe5 dxe5 17. Nf3 Qe7 {0-1 (63) Tregubov,P (2588)-Morozevich,A (2659) Skolkovo 2019}) 11. Bg5 Qc7 $146 ({Predecessor:} 11... f6 12. Bh4 Bh6 13. Be2 Bf4 14. Ne1 Ng7 15. Bg4 Bxg4 16. Qxg4 Bd2 17. Nd3 Bxc3 18. bxc3 {1-0 (72) Lizak,P (2420)-Rajlich,I (2392) Budapest 2015}) 12. Re1 {White is better.} f5 13. exf5 gxf5 14. Nh4 Qf7 15. Bc2 Bf6 16. Nf3 Kh8 17. Ba4 (17. Qd2 $14) 17... Nac7 $11 18. Qd2 Rg8 19. Bxf6+ Nxf6 20. Ng5 (20. Kh1 $15) 20... Qg6 21. f4 e4 22. Nb5 (22. h4 $17) 22... Nxb5 $19 23. Bxb5 a6 24. Ba4 {[#]} b5 $1 {[%mdl 512]} 25. Bb3 (25. cxb5 h6) 25... h6 26. Ne6 Bxe6 27. dxe6 bxc4 28. Bxc4 {[#]} d5 $1 $36 {[%mdl 2560] Black is really pushing.} 29. Bf1 (29. Bxd5 Nxd5) 29... Rae8 (29... Rab8 $142 30. b4 c4) 30. Qc3 (30. Rac1 $17 {was necessary.}) 30... Rxe6 31. Qxc5 (31. Rad1 {might work better.} Kh7 32. Qxc5) 31... Nh5 {Played: Qg6-g3} 0-1

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.2"]
[White "Khismatullin, Denis"]
[Black "Nesterov, Arseniy"]
[Result "1/2-1/2"]
[ECO "A21"]
[WhiteElo "2611"]
[BlackElo "2484"]
[Annotator "TA"]
[PlyCount "80"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,80,17,17,22,43,31,36,33,44,39,54,14,22,20,21,24,33,22,21,23,22,8,9,-2,0,-16,29,24,10,0,0,0,0,-62,-64,-48,-60,-73,-51,-31,-32,-43,-49,-71,-77,-56,0,0,8,8,8,8,8,8,8,0,0,0,40,0,0,0,0,-111,0,0,0,0,0,0,0,0,0]} 1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. Nf3 c6 5. Nc3 d6 6. e3 {A21: English Opening: 1...e5 2 Nc3} Nf6 7. d4 exd4 8. exd4 {White is slightly better.} Bb4 9. Bd3 Qe7+ $146 ({Predecessor:} 9... O-O 10. O-O Bg4 11. h3 Bh5 12. g4 Bg6 {½-½ (76) Grischuk,A (2792)-Moiseenko,A (2707) Dubai 2014}) 10. Be3 (10. Be2 {seems wilder.} O-O 11. O-O d5 12. Re1 Be6 13. Bd2) 10... Ng4 11. Qd2 Nxe3 12. fxe3 Bg4 13. O-O Nd7 14. Rae1 O-O 15. Qc2 Nf6 16. e4 Bxf3 17. Rxf3 c5 18. Re2 {Black must now prevent e5.} g6 19. e5 Bxc3 20. Qxc3 Nd7 21. dxc5 ({Better is} 21. exd6 $11 Qxd6 22. d5) 21... dxe5 $15 22. Be4 Qxc5+ 23. Kh1 Rab8 24. b4 Qe7 25. c5 {[#]} a5 $1 {[%mdl 512] aiming for ...axb4.} 26. a3 (26. bxa5 Nxc5) 26... axb4 27. axb4 Nf6 (27... f5 $15 28. Bd5+ Kh8) 28. Bc2 Nd5 29. Qe1 $36 {[%mdl 2048] White is pushing.} ({But not} 29. Qxe5 Qxe5 30. Rxe5 Rbe8 $17) 29... Rfe8 $1 30. Bb3 Rbd8 31. Ba4 e4 32. Bxe8 Rxe8 33. Rf1 Qe5 34. Qd2 e3 35. Qb2 $1 Qe4 36. Ree1 {[#]} (36. Rfe1 $11) 36... Nxb4 ({Don't play} 36... Qxb4 $6 37. Qxb4 Nxb4 38. Re2 $11) (36... Nf4 $1 $17 {Threatens to win with ...Re6.} 37. h3 Re6) 37. Qf6 $11 {The position is equal.} Qe6 38. Rxe3 Qxe3 39. Qxf7+ {[%mdl 64] Double Attack} Kh8 {...Qe7 is the strong threat.} 40. Qf6+ Kg8 {Accuracy: White = 54%, Black = 59%.} 1/2-1/2

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.3"]
[White "Smirin, Ilia"]
[Black "Gusain, Himal"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2599"]
[BlackElo "2420"]
[Annotator "TA"]
[PlyCount "129"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,129,28,27,29,10,12,0,29,0,11,0,-4,-28,-28,-29,-28,-28,-22,-38,-17,-50,0,0,0,0,31,22,22,30,23,19,61,37,91,55,65,62,88,58,105,91,153,154,126,96,146,141,141,141,200,196,197,195,200,209,190,191,177,159,160,164,162,165,183,183,183,183,199,126,127,97,183,183,183,183,183,176,176,176,284,282,357,361,341,342,336,335,310,304,421,399,397,401,395,339,342,337,528,528,514,435,2422,2307,29949,29945,5436,7124,29972,29962,29979,29979,29980,29981,29986,29987,29988,29989,29992,-5422]} 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. h3 Nf6 7. O-O Nd7 {B31: Sicilian: 2...Nc6 3 Bb5 g6} 8. Nbd2 (8. Nc3 b6 9. a3 a5 10. Nd2 e5 11. Nc4 O-O 12. f4 exf4 13. Bxf4 Ba6 14. Bd6 Re8 15. Qf3 Bxc4 16. dxc4 {0-1 (34) Jumabayev,R (2602)-Le,Q (2714) St Petersburg 2018}) 8... b6 9. Re1 Nf8 $146 {The position is equal.} ({Predecessor:} 9... Qc7 10. Qe2 e5 11. Nc4 Ba6 12. Ne3 Nf8 13. a4 Ne6 14. a5 O-O 15. b3 {½-½ (45) Jaskolka,T (2011)-Silich,Y (1897) Krakow 2017}) 10. a3 a5 11. Rb1 a4 12. b4 axb3 13. Rxb3 Ne6 14. c4 O-O 15. Qc2 Bd7 16. Bb2 Nd4 17. Bxd4 $1 cxd4 18. Qb2 b5 19. e5 bxc4 20. Nxc4 Be6 21. Qxd4 Bd5 22. Nfd2 f6 (22... Bh6 $14) 23. Qe3 fxe5 24. Ne4 Rf4 {next ...Rxe4! is good for Black.} 25. f3 Qf8 26. Rb7 Rf7 (26... Qd8 $142) 27. Nb6 $16 Rd8 28. a4 {[%cal Ba3a4,Ba4a5,Ba5a6][%mdl 32]} e6 29. Rxf7 Qxf7 30. a5 Qc7 (30... Qe7 $16 {keeps fighting.}) 31. Kh1 $18 Bf8 32. Ra1 Be7 33. a6 c5 34. Nc4 Ra8 35. Qc1 Qb8 36. Qc3 Ra7 37. Qa5 ({Don't take} 37. Qxe5 $6 Qxe5 38. Nxe5 Bb7 $14) 37... Qb4 38. Qb6 Qxb6 39. Nxb6 {[#] Hoping for Nc8.} Bd8 40. Nxd5 (40. Nc8 $18 Ra8 41. Ned6) 40... exd5 {[%mdl 4096] Endgame KRB-KRN} 41. Nc3 Kf7 (41... c4 $16) 42. Nxd5 Ke6 43. Nc3 Kd7 44. Kg1 Kc6 45. Kf2 Kb6 (45... Bg5 $142 46. Ne4 Bh6) 46. Ke3 Rxa6 47. Nd5+ Kb7 48. Rxa6 Kxa6 {KB-KN} 49. Ke4 Kb5 50. Ne3 ({Don't do} 50. Kxe5 $6 c4 $18) 50... Bc7 51. Nc4 Kc6 52. g4 Bb8 53. Nxe5+ Kd6 54. f4 Bc7 (54... Ke6 $142 55. Nf3 Kf6) 55. f5 gxf5+ 56. Kxf5 Ke7 (56... Kd5 $142 57. Nf3 Ba5) 57. g5 Bd6 58. h4 Bc7 59. h5 Bd6 60. Ng4 {White mates.} Bg3 61. Nf6 h6 62. Ng8+ Kd6 63. gxh6 Be5 64. Nf6 Ke7 65. Ke4 $4 {[%mdl 40960] Accuracy: White = 73%, Black = 44%. . Sensor Board Error (Ke4/e5)?} (65. Kxe5 Kf8 66. h7 Kg7 67. Kf5 c4 {[#]} 68. h6+ $1 {[%mdl 512]} Kh8 69. Kg6 c3 70. Ne4 c2 71. Nd6 c1=Q 72. Nf7#) 1-0

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.4"]
[White "Peng, Xiongjian"]
[Black "Kokarev, Dmitry"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "2476"]
[BlackElo "2593"]
[Annotator "TA"]
[PlyCount "67"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,67,33,43,43,16,7,-19,0,0,0,0,26,0,-6,0,4,0,19,19,19,20,30,20,23,23,33,27,35,35,32,8,24,0,0,0,0,0,0,0,8,0,5,8,11,13,5,0,19,0,0,0,9,0]} 1. d4 Nf6 2. Nf3 g6 3. g3 c5 4. Bg2 Bg7 5. O-O O-O 6. c4 cxd4 7. Nxd4 Nc6 8. Nc3 Qa5 9. e3 d6 {A39: Symmetrical English vs ...g6: 4 Bg2 Bg7 5 Nf3 Nf6 6 0-0 0-0 7 d4} 10. Qd2 (10. h3 Bd7 11. Qe2 Rfc8 12. Rd1 a6 13. Bd2 Qd8 14. Rac1 Rab8 15. Nxc6 Bxc6 16. e4 Nd7 17. Bg5 h6 18. Be3 {½-½ (41) Ding,L (2778)-Bacrot,E (2718) Liaocheng 2018}) 10... Qh5 11. Nce2 Nxd4 $146 ({Predecessor:} 11... e5 12. Nb5 Bh3 13. f3 Bxg2 14. Kxg2 e4 15. f4 Rfd8 16. h3 Qc5 17. b3 {0-1 (47) Suba,M (2413)-Berkovich,M (2357) Opatija 2013}) 12. exd4 e5 13. Re1 Re8 14. d5 Bh3 15. Qg5 Bxg2 16. Kxg2 e4 {[#] aiming for ...Qf3+.} 17. Qxh5 Nxh5 18. Rb1 f5 19. Be3 Be5 20. a4 {[%cal Ba2a4,Ba4a5][%mdl 32]} a6 21. a5 Rac8 22. Rec1 Re7 23. b4 Nf6 24. b5 Rec7 {The position is equal.} 25. bxa6 bxa6 26. Rb4 Kf7 27. h4 Nd7 28. Nf4 {[#] Strongly threatening Ne6.} Bxf4 29. Bxf4 Ke7 30. Bg5+ Kf7 31. Bf4 Ke7 32. Bg5+ Kf7 33. Bf4 Ke7 34. Bg5+ {Accuracy: White = 39%, Black = 57%.} 1/2-1/2

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.5"]
[White "Zhao, Yuanhe"]
[Black "Yuffa, Daniil"]
[Result "1/2-1/2"]
[ECO "A24"]
[WhiteElo "2473"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,81,2,-5,8,0,7,-13,-7,-33,-28,-33,-27,-22,-29,-47,-12,-28,-2,-29,0,0,0,0,0,0,22,26,26,21,16,15,18,25,50,48,48,47,52,8,18,15,8,0,0,0,0,0,0,-10,0,0,0,0,0,0,0,0,0,0,8,12,15,0,0,0,32,0,0,0]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O e5 7. d3 Re8 8. Nd2 c6 {A24: English Opening vs King's Indian: Lines without ...Nc6} 9. Nde4 Nxe4 10. Nxe4 Na6 11. Rb1 $146 ({Predecessor:} 11. a3 d5 12. cxd5 cxd5 13. Nc3 Be6 14. b4 Qd7 15. Bb2 Rad8 {0-1 (62) Maasarani,M (2052)-Zhou,J (2612) Abu Dhabi 2016}) 11... d5 12. cxd5 cxd5 13. Nc3 Be6 14. Qb3 {[%cal Rg2d5]} Nc5 15. Qa3 Qd6 16. Bd2 b6 17. b4 Nd7 18. Qa6 Nf6 19. Nb5 Qd7 20. Rfc1 $36 {[%mdl 2048] White fights for an advantage.} Rec8 21. a4 Bg4 22. Bg5 Bxe2 23. Nc3 {[#]} Ne4 $1 {[%mdl 512]} 24. Nxe4 dxe4 25. Bxe4 Rab8 26. Rxc8+ Rxc8 27. a5 h6 28. Be3 f5 {[#]} 29. Bd5+ $1 {[%mdl 512]} Kh7 {White must now prevent ...f4.} (29... Qxd5 30. Qxc8+) 30. axb6 axb6 31. Re1 Rd8 32. Rxe2 Qxd5 33. Qxb6 Qxd3 {...Qd1+ is the strong threat.} 34. Re1 Rd5 35. Qc6 g5 36. Bc5 f4 37. Qe6 Rd8 38. Qe7 Rd7 39. Qe6 Rd8 40. Qe7 Rd7 41. Qe6 {Accuracy: White = 57%, Black = 56%.} 1/2-1/2

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.5"]
[White "Zhao, Yuanhe"]
[Black "Yuffa, Daniil"]
[Result "*"]
[WhiteElo "2473"]
[BlackElo "2577"]
[Annotator "TA"]
[PlyCount "32"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 14,16,6,0,6]} 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O e5 7. d3 Re8 8. Nd2 c6 {A24: English Opening vs King's Indian: Lines without ...Nc6} {Predecessor:} 9. Nde4 $146 Nxe4 10. dxe4 Be6 11. b3 Na6 12. Be3 Qe7 13. Qd2 Red8 14. Rad1 Nc7 15. Qc1 b5 16. cxb5 cxb5 {1-0 (62) Artemiev,V (2703)-Sivuk,V (2545) Cheliabinsk 2018} *

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.6"]
[White "Yanchenko, Roman"]
[Black "Sivuk, Vitaly"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2454"]
[BlackElo "2559"]
[Annotator "TA"]
[PlyCount "114"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 12,114,30,28,35,27,20,20,17,13,24,12,20,0,30,10,18,0,-10,-7,-16,-9,-6,-16,-9,-6,-11,-22,-25,-21,-12,-27,-12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,0,0,-56,-64,-145,-136,-141,-143,-135,-125,-218,-214,-209,-158,-155,-97,-103,-105,-131,-145,-159,-160,-253,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 c5 5. Bg2 Qa5+ 6. Bd2 Qb6 7. dxc5 Qxc5 {E60: King's Indian: Unusual lines and Fianchetto Variation without Nc3} 8. Qb3 Ne4 9. Be3 Qa5+ 10. Nbd2 Nc6 11. O-O Nd6 12. c5 (12. Rfd1 Nf5 13. Nf1 Nxe3 14. Nxe3 O-O 15. Rac1 {0-1 (54) Grachev,B (2672)-Inarkiev,E (2666) Vladivostok 2014}) 12... Nf5 13. Nc4 Qa6 14. Bf4 O-O 15. e4 $146 ({Predecessor:} 15. Rfc1) 15... Nfd4 16. Nxd4 Nxd4 17. Qd3 d6 18. cxd6 exd6 {With the idea ...Be6.} 19. Be3 ({Much weaker is} 19. Bxd6 Be6 $17) 19... Be6 20. Rfc1 Nc6 21. Bf1 Rad8 22. Qc2 d5 23. Nb6 Qa5 24. Nxd5 Bxd5 25. exd5 Rxd5 26. Qb3 Rd7 27. Rc5 Qd8 28. Bh3 Nd4 29. Qc4 b6 30. Bxd7 bxc5 31. Bg4 h5 $36 {[%mdl 2048] Black is pushing.} 32. Bd1 $1 Qb6 33. Rb1 a5 34. b3 Re8 35. Rc1 Re5 36. Qf1 (36. Bxd4 $11 Re1+ 37. Kg2 Bxd4 38. Bf3) 36... Qe6 $15 37. Bd2 {[#]} (37. Bc2 $15) 37... Re2 $1 $17 {[%cal Re2d2][%mdl 512]} 38. Bxa5 (38. Bxe2 Nxe2+) 38... Rxa2 39. Bc3 h4 $1 40. b4 (40. gxh4 $17 Qe4 41. Ra1 Rxa1 42. Bxa1) 40... c4 $1 $19 41. Ra1 Rxa1 42. Bxa1 Nb3 (42... h3 $142 $1 43. b5 Nxb5 {[%mdl 64] Discovered Attack}) 43. Bxg7 $17 Kxg7 44. gxh4 Nd4 45. h5 {[#]} gxh5 $1 46. Bxh5 {[#]} (46. b5 $17) 46... Qe4 $2 ({Black should play} 46... c3 $1 $19 {[%cal Rc3c2]} 47. Bd1 c2 48. Bxc2 Nxc2) 47. Qg2+ {The position is equal.} Qxg2+ 48. Kxg2 $11 {[%mdl 4096] Endgame KB-KN} c3 {...c2 is the strong threat.} 49. Bd1 Kf6 50. h4 Kf5 51. Kg3 f6 52. Ba4 c2 {[#]} 53. Bxc2+ $1 {[%mdl 512]} Nxc2 54. b5 Nd4 55. b6 Nc6 56. b7 Nb8 57. Kf3 Ke5 {Accuracy: White = 74%, Black = 77%.} 1/2-1/2

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.7"]
[White "Vorobiov, Evgeny E."]
[Black "Pourramezanali, Amirreza"]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "2555"]
[BlackElo "2478"]
[Annotator "RC"]
[PlyCount "91"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "5400+30"]

1. d4 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 2. c4 {[%emt 0:00:00]} e6 {[%emt 0:00:00]} 3. Nf3 {[%emt 0:00:28]} Nf6 {[%emt 0:00:00]} 4. g3 {[%emt 0:01:12]} Bb4+ {[%emt 0:00:00]} 5. Bd2 {[%emt 0:00:09]} Be7 {[%emt 0:00:02]} 6. Bg2 {[%emt 0:00:03]} O-O {[%emt 0:00:07]} 7. O-O {[%emt 0:00:06]} c6 {[%emt 0:00:05]} 8. Qc2 {[%emt 0:00:04]} b6 {[%emt 0:00:21]} 9. Rd1 {[%emt 0:01:23]} Nbd7 {[%emt 0:00:08]} 10. Bf4 {[%emt 0:01:41]} Bb7 {[%emt 0:00:11]} 11. Ne5 {[%emt 0:04:39]} Nh5 {[%emt 0:00:10]} 12. Bd2 {[%emt 0:02:59]} Nhf6 {[%emt 0:00:02]} 13. cxd5 cxd5 {[%emt 0:00:02]} 14. Nc6 Bxc6 {[%emt 0:00:04]} 15. Qxc6 {[%emt 0:03:23]} Rc8 {[%emt 0:00:05]} 16. Qb5 {[%emt 0:01:15]} Ne8 {[%emt 0:00:06]} 17. Qd3 {[%emt 0:03:40]} Nd6 {[%emt 0:00:13]} 18. b3 {[%emt 0:04:03]} Nf6 {[%emt 0:08:40]} 19. Nc3 {[%emt 0:02:42]} Qd7 {[%emt 0:00:06]} 20. Rac1 {[%emt 0:01:48]} Rc6 {[%emt 0:08:05]} 21. a4 {[%emt 0:05:36]} Rfc8 {[%emt 0:00:53]} 22. Na2 {[%emt 0:01:23]} Rxc1 {[%emt 0:21:27]} 23. Rxc1 {[%emt 0:00:40]} Rxc1+ {[%emt 0:00:07]} 24. Bxc1 {[%emt 0:02:57]} Qc6 {[%emt 0:00:36]} 25. Qc3 {[%emt 0:03:44]} Qxc3 {[%emt 0:00:08]} 26. Nxc3 {[%emt 0:00:05]} Nfe4 {[%emt 0:05:09]} 27. Na2 {[%emt 0:08:12]} a5 {[%emt 0:06:00]} 28. f3 {[%emt 0:03:22]} Nf6 {[%emt 0:00:02]} 29. Kf2 {[%emt 0:01:25]} Nf5 {[%emt 0:02:36]} 30. Bb2 {[%emt 0:03:49]} Nd6 {[%emt 0:05:06]} 31. Nc3 {[%emt 0:02:36]} h5 {[%emt 0:06:15]} 32. h3 {[%emt 0:02:51]} Nf5 {[%emt 0:03:21]} 33. Nb5 {[%emt 0:02:46]} Nd6 {[%emt 0:00:19]} 34. Na7 {[%emt 0:01:23]} Bd8 {[%emt 0:02:06]} 35. g4 {[%emt 0:01:15]} hxg4 {[%emt 0:00:14]} 36. hxg4 {[%emt 0:00:05]} Bc7 {[%emt 0:01:13]} 37. Ba3 {[%emt 0:01:25]} g6 {[%emt 0:02:45]} 38. e3 {[%emt 0:01:57]} Kg7 {[%emt 0:00:27]} 39. Ke2 {[%emt 0:01:49]} Nd7 {[%emt 0:12:41]} 40. Nc6 {[%emt 0:08:55]} f5 {[%emt 0:01:44]} 41. gxf5 {[%emt 0:03:21]} gxf5 {[%emt 0:00:49]} 42. Kd3 {[%emt 0:00:17]} Kf6 {[%emt 0:00:42]} 43. Ne5 {[%emt 0:01:32]} Nb8 {[%emt 0:01:31]} 44. Kc3 {[%emt 0:08:27]} Nf7 {[%emt 0:01:45]} 45. f4 {[%emt 0:03:02]} Bd6 {[%emt 0:03:13]} 46. Nxf7 {[%emt 0:10:31] Ke5} 1/2-1/2

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.8"]
[White "Bocharov, Ivan"]
[Black "Polschikov, Alexey"]
[Result "1-0"]
[ECO "B53"]
[WhiteElo "2550"]
[BlackElo "2416"]
[Annotator "TA"]
[PlyCount "101"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,101,0,3,6,12,15,21,21,34,-22,-15,-18,-20,-22,-16,-24,-27,-24,-22,-26,-17,-24,-24,-41,-41,-38,-27,-37,-27,-52,5,5,4,4,34,12,57,31,50,8,15,-3,2,0,0,0,20,20,44,54,54,50,40,53,79,79,93,39,112,103,119,122,122,135,129,101,114,127,117,114,129,138,131,131,145,159,214,204,414,408,1012,1029,977,961,981,945,974,901,903,565,790,496,1020,744]} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qe3 Nf6 6. Be2 {B53: Sicilian: 2...d6: Lines with Qxd4} g6 7. O-O Bg7 8. Rd1 {The position is equal.} (8. h3 O-O 9. c4 b6 10. Rd1 Nd7 11. Nc3 Bb7 12. b3 Nb4 {0-1 (37) Anand,V (2764)-Vachier Lagrave,M (2775) Paris 2019}) 8... O-O 9. c4 (9. Nc3 $14) 9... Ng4 $11 10. Qb3 Be6 $146 ({Predecessor:} 10... Qa5 11. Rd5 Qc7 12. Nc3 Be6 {½-½ (47) Fedorchuk,S (2607)-Bellahcene,B (2502) Cap d'Agde 2018}) 11. Nc3 Na5 12. Qb4 Qb6 $1 {[%cal Rb6b4]} 13. Qxb6 axb6 14. Ng5 Bxc3 $1 15. bxc3 (15. Nxe6 Nxf2 16. Kxf2 fxe6+ 17. Kg1 Bf6 $17) 15... Bd7 16. Rb1 Ne5 17. Rxb6 Rfc8 18. f4 Nexc4 19. Rb4 $1 Be8 ({Better is} 19... b5 $15) 20. a4 Rc7 21. Nf3 e5 22. g4 Rac8 23. Kf2 Rc5 24. g5 Bc6 25. Bd3 Re8 26. Nd4 Bd7 ({But not} 26... exd4 $6 27. cxd4 Bxa4 28. Rxa4 $16) 27. Nb5 exf4 28. Bxf4 Bg4 29. Rc1 Rd8 30. h4 Ne5 31. Bf1 Nac6 32. Rbb1 $1 Be6 33. Rd1 (33. Kg1 $16) 33... Bc4 (33... d5 $14) 34. Rxd6 $16 {Bxe5 is the strong threat.} Rxd6 35. Nxd6 {[%mdl 64] Discovered Attack} Bxf1 36. Kxf1 ({Don't do} 36. Rxf1 $6 Rxc3 37. Bxe5 (37. Nxb7 Rb3 $11) 37... Nxe5) 36... Rxc3 {Hoping for ...Rf3+.} 37. Bxe5 $1 Nxe5 38. Rxb7 {[%mdl 4096] Endgame And now Rb8+ would win. KRN-KRN} Kf8 39. a5 {Black must now prevent a6.} Ra3 40. Ra7 Rd3 41. Nb5 {Threatens to win with a6.} Rd2 {[#]} 42. Ra6 $1 Ke7 (42... Rb2 $16 {was called for.}) 43. Rb6 $18 Nf3 $2 {[#]} (43... Nd7) 44. Rf6 $1 {[%cal Rf6f3]} Rb2 (44... Nh2+ $142 45. Ke1 Rb2) 45. Rxf3 {White is clearly winning.} Rxb5 {KR-KR} 46. Ra3 Rb7 47. a6 Ra7 48. Ke2 Kd6 49. Ke3 Kc7 50. Kd4 Kb8 (50... Kb6 $142 51. Rb3+ Kc6) 51. Rb3+ {Accuracy: White = 71%, Black = 48%.} 1-0

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.9"]
[White "Vokhidov, Shamsiddin"]
[Black "Poznyak, Nazar"]
[Result "1-0"]
[ECO "B29"]
[WhiteElo "2519"]
[BlackElo "2124"]
[Annotator "TA"]
[PlyCount "65"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 9,65,17,25,27,51,31,68,56,114,100,80,68,76,83,83,104,133,134,329,152,147,134,169,178,164,161,158,180,195,200,201,199,149,162,751,751,725,715,633,476,485,447,477,478,477,472,476,456,559,569,1833,1864,944,1201,587,556,743,700]} 1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. g3 Nc6 5. Bg2 e6 6. O-O {B29: Sicilian: 2 Nf3 Nf6 (Nimzowitsch Variation)} Qc7 (6... d6 7. exd6 Bxd6 8. d4 O-O 9. c4 Nb6 10. dxc5 Bxc5 11. Qe2 e5 12. Nc3 Bg4 13. Be3 Bxe3 14. fxe3 Qe7 15. h3 {1-0 (56) Gharamian,T (2626)-Vocaturo,D (2600) Bastia 2016}) 7. Re1 a6 $146 ({Predecessor:} 7... h6 8. c3 b6 9. d4 cxd4 10. cxd4 Bb7 11. a3 Be7 12. Nbd2 Rc8 13. Ne4 {0-1 (49) Rajic,I (2021)-Yaran,S (2271) Manavgat 2018}) 8. b3 {White is slightly better.} f5 ({Black should try} 8... b5 $14) 9. Bb2 b5 10. d3 Bb7 11. c4 bxc4 12. dxc4 Nde7 13. Nc3 Nc8 $2 (13... Rb8 $16) 14. Qd2 (14. Nd5 $18 exd5 15. cxd5) 14... Nb6 $16 15. Rad1 Be7 {[#]} 16. Nd5 $1 {[%cal Rd5c7]} exd5 17. cxd5 Nxd5 18. Qxd5 {Threatens to win with e6.} Nd4 {[#]} 19. Qxb7 $1 ({Inferior is} 19. Qd6 Qa5 $17) 19... Ne2+ 20. Rxe2 Qxb7 21. Nd4 Qc8 $2 (21... Qb4) 22. Nxf5 $18 {White is clearly winning.} Kf8 23. e6 dxe6 24. Bxg7+ {[%mdl 64] Double Attack} Kf7 25. Nxe7 Kxe7 26. Bxh8 Qxh8 27. Bxa8 Qxa8 {[%mdl 4096] Endgame KQ-KRR} 28. Rde1 h5 29. Rxe6+ Kf7 30. Re7+ Kf6 31. R1e6+ Kf5 32. Re5+ Kf6 33. Re8 {Accuracy: White = 76%, Black = 35%.} 1-0

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.10"]
[White "Korchmar, Vasiliy"]
[Black "Burmakin, Vladimir"]
[Result "1/2-1/2"]
[ECO "D15"]
[WhiteElo "2432"]
[BlackElo "2507"]
[Annotator "TA"]
[PlyCount "81"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,81,17,0,34,27,31,31,28,34,43,36,44,31,33,30,24,22,32,23,35,0,0,-10,14,12,16,5,3,6,16,8,10,-38,-44,-49,0,-2,-5,-3,26,25,100,13,17,18,20,0,0,0,0,0,0,0,2,-38,2,2,2,2,2,2,2,2,2,0,0,0]} 1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. Nc3 a6 5. c5 Nbd7 6. Bf4 Nh5 7. Bd2 Nhf6 8. Bf4 Nh5 9. Bd2 Nhf6 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} 10. Rc1 g6 11. g3 Bg7 {White is slightly better.} 12. Bg2 O-O 13. O-O Ne8 {[#]} 14. e4 $146 ({Predecessor:} 14. Na4 a5 15. Qc2 Nc7 16. e4 dxe4 17. Qxe4 {1-0 (51) Tomashevsky,E (2713)-Volkov,S (2645) St Petersburg 2017}) 14... dxe4 15. Nxe4 Ndf6 16. Nc3 Nc7 17. Re1 Bg4 18. h3 Bxf3 19. Bxf3 Qd7 20. Bg2 Rfe8 21. Qb3 Nfd5 22. Qc4 Rad8 23. Rcd1 Nb5 24. Bc1 Ndc7 $1 25. Ne2 Nxd4 26. Nxd4 Bxd4 27. Qb4 e5 28. Qxb7 Re6 (28... Qe7 $11) 29. Bg5 ({White should play} 29. Be3 $16) 29... Nd5 $1 $11 30. Qb3 Rde8 31. Be3 Bxe3 32. Rxe3 {[%cal Rg2d5]} e4 33. Re2 Qe7 34. Qc4 a5 35. Rde1 {[%cal Re2e4]} Nf6 36. a3 {The position is equal.} h5 37. Re3 Re5 38. b4 axb4 39. axb4 Re6 40. Kh1 Kh7 41. Kg1 {Accuracy: White = 53%, Black = 65%.} 1/2-1/2

[Event "Chigorin Memorial 2019"]
[Site "Saint Petersburg"]
[Date "2019.10.08"]
[Round "4.10"]
[White "Korchmar, Vasiliy"]
[Black "Burmakin, Vladimir"]
[Result "*"]
[ECO "D15"]
[WhiteElo "2432"]
[BlackElo "2507"]
[Annotator "TA"]
[PlyCount "33"]
[EventDate "2019.10.05"]
[EventType "swiss"]
[EventCountry "RUS"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]

{[%evp 16,26,18,0,39,27,27,33,32,30,27,16,43]} 1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. Nc3 a6 5. c5 Nbd7 6. Bf4 Nh5 7. Bd2 Nhf6 8. Bf4 Nh5 9. Bd2 Nhf6 {D15: Slav Defence: 4 Nc3 a6 and gambit lines after 4 Nc3 dxc4} 10. Rc1 g6 11. g3 Bg7 12. Bg2 O-O 13. O-O Ne8 {[#]} {Predecessor:} 14. Na4 $146 a5 15. Qc2 Nc7 16. e4 dxe4 17. Qxe4 {1-0 (51) Tomashevsky,E (2713)-Volkov,S (2645) St Petersburg 2017} *

