[Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.1"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "0-1"] [ECO "D02"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "Shahid"] [PlyCount "78"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 15,78,12,12,15,29,41,33,0,0,0,29,-27,-27,-17,-18,-25,0,-68,-62,-79,-68, -51,-2,-36,6,-48,233,34,84,26,52,0,754,0,0,0,482,425,2317,257,240,252,216,122, 129,115,306,296,339,280,220,2,299,235,304,156,1062,968,951,182,162,164,164,0,0] } 1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. O-O d5 5. d4 cxd4 6. Nxd4 e5 7. Nxc6 bxc6 8. c4 Be6 9. Qa4 {cxd5 is the strong threat. D02:1 d4 d5 2 Nf3 sidelines, including 2...Nf6 3 g3 and 2...Nf6 3 Bf4.} Qd7 10. Nc3 Rc8 11. Bg5 {White is slightly better.} d4 12. Rad1 {[#]} (12. Rfd1 Bd6 13. Bxf6 gxf6 14. e3 c5 15. Qxd7+ Kxd7 16. Nd5 Bxd5 17. Bxd5 Rb8 18. b3 Ke7 {1/2-1/2 (36) Harika,D (2515) -Kosteniuk,A (2471) Chess.com INT 2020}) 12... h5 $146 {[#]} ({Predecessor:} 12... Be7 13. Bxf6 Bxf6 14. c5 O-O 15. e3 Bf5 16. exd4 exd4 17. Ne4 Bxe4 18. Bxe4 g6 {1-0 (46) Duda,J (2738)-Tregubov,P (2592) Chess.com INT 2019}) 13. e3 Nh7 $1 $11 {[%CAl Rh7g5]} 14. Bh4 g5 15. exd4 $1 exd4 16. c5 $2 (16. f4 gxh4 17. f5 Bxf5 18. Rxf5 Qxf5 19. Bxc6+ Rxc6 20. Qxc6+) 16... Bg7 17. Ne4 $1 gxh4 18. Nd6+ Ke7 {With the idea ...h3.} 19. Rfe1 (19. f4 $5 {[%CAl Rf4f5]} hxg3 20. hxg3 $15) 19... Rc7 {Threatens to win with ...hxg3.} 20. f4 (20. Rxd4 $11 Bxd4 21. Qxd4 {[%mdl 64] Double Attack}) 20... Kd8 $2 {[%mdl 8192]} (20... Kf8 $15 { keeps the upper hand.} 21. f5 Bxf5 22. Bxc6 Rxc6 23. Re8+ Qxe8 24. Nxe8 Re6 25. Nxg7 Kxg7 26. Qxd4+ {[%mdl 64] Double Attack} Nf6 27. Qxh4 Rhe8) 21. Qa5 $2 ( 21. f5 $18 hxg3 22. hxg3 (22. fxe6 fxe6 23. h4 Bf6 $18) 22... Bxf5 23. Nxf5 Qxf5 24. Rxd4+ Rd7 (24... Bxd4+ 25. Qxd4+ Rd7 26. Qxh8+) 25. Rxd7+ Qxd7 (25... Kxd7 26. Qxc6+) 26. Rd1) 21... hxg3 $1 $14 22. hxg3 h4 $1 23. b4 (23. Qb4 $1 $14) 23... Bd5 $2 {[%mdl 8192]} (23... hxg3 24. b5 $14) (23... h3 $11 24. Bf3 Nf6 25. Rxd4 h2+ 26. Kh1 Nd5) 24. Bxd5 $2 (24. b5 $1 $18 Qg4 25. Rd3 (25. Bxd5 Qxg3+ 26. Kh1 cxd5 $11)) 24... cxd5 $11 25. Nb5 $36 {[%mdl 2112] Hoping for c6. Double Attack, Pin. White is more active.} Bf6 $2 {[%mdl 8192]} (25... hxg3 $2 26. c6 $18) (25... Nf6 $11 {and Black stays safe.}) 26. c6 $1 $18 {[%CAl Rc6d7] } ({Stronger than} 26. Nxc7 Qxc7 27. Qxc7+ Kxc7 $15) 26... Qc8 (26... Qxc6 $142 27. Rc1 Qb6) 27. Nxc7 $2 (27. Nxa7 Qh3 28. Qxd5+ Rd7 29. Qxd7+ Qxd7 30. cxd7) 27... Qxc7 28. Qxd5+ Kc8 29. b5 (29. g4 $1 $18) 29... Kb8 30. Kg2 {[%mdl 1024] White has strong compensation.} h3+ $2 (30... hxg3 $16 31. Re2 Bd8) 31. Kh2 ( 31. Kxh3 Ng5+ 32. Kg2 Ne6 $14) 31... Bd8 32. Qxd4 ({Weaker is} 32. Rxd4 Nf6 $16 ) 32... Nf6 {intending ...Qb6.} 33. a4 $2 ({White should play} 33. Kh1 $18) 33... Ng4+ $2 {[%mdl 8192] [#]} (33... Qb6 $1 $11 {and Black is okay.}) 34. Kh1 $1 Bf6 {[#]} 35. Qc5 (35. Qd2 $1 $18 {[%CAl Rd2e2]} Bd8 36. Qc3 Nf2+ 37. Kg1 Nxd1 38. Qxh8) 35... Rd8 $2 (35... Qb6 $16 36. Qxb6+ axb6) 36. Rxd8+ Qxd8 37. c7+ $2 (37. a5 {aiming for b6.} Be7 38. c7+ {[%mdl 64] Decoy} (38. Qxe7 $2 Qd5+ {[%mdl 64] Double Attack} 39. Qe4 Nf2+ {[%mdl 64] Double Attack, Pin} 40. Kh2 Nxe4 $19) 38... Qxc7 39. Qxc7+ Kxc7 40. Rxe7+ {[%mdl 64] Double Attack} Kb8 41. Rxf7 Nf2+ 42. Kh2) 37... Qxc7 38. Re8+ Kb7 39. Qd5+ (39. Qxc7+ $18 Kxc7 40. Rf8 ) 39... Kb6 {[%mdl 32768] Weighted Error Value: White=1.03/Black=0.71. Sensor Board Error (Ke4/e5)?} 0-1 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.2"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1/2-1/2"] [ECO "C15"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "52"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,52,-10,-14,-25,-27,-20,5,4,35,61,63,49,56,60,97,71,70,60,77,43,62,0, 0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 dxe4 5. a3 Bxc3+ 6. Nxc3 Nc6 7. Bb5 Nge7 8. Bg5 f6 9. Be3 f5 10. Qd2 O-O 11. f3 {C15: French: 3 Nc3 Bb4: Unusual White 4th moves.} exf3 12. O-O-O a6 13. Bxc6 bxc6 14. gxf3 {[#]} Rb8 $146 ({Predecessor:} 14... Nd5 15. Rhg1 Rf7 16. Bg5 Qd6 17. Nxd5 Qxd5 18. Bf4 Qa2 19. Qe3 Rb8 20. b4 a5 {1-0 (39) Ravot,S (2259)-Roos,L (2345) France 2005}) 15. Rhg1 Rf7 16. Bg5 a5 17. Na4 (17. Rge1) (17. Rde1) 17... Qd5 18. Bxe7 Rxe7 19. Qg5 Rf7 20. Nc5 (20. b3 $14) 20... h6 $1 $11 { [%CAl Rh6g5] The position is equal.} 21. Qxh6 {Rg2 is the strong threat.} Qa2 $1 22. Qh4 Rxb2 {[%csl Ga2][%CAl Rb2c2]} 23. Qd8+ {[%mdl 64] Double Attack} Kh7 $1 {[%csl Ga2][%CAl Rb2c2]} ({Weaker is} 23... Rf8 24. Rxg7+ $3 {[%mdl 512]} Kxg7 25. Rg1+ Kf7 26. Qxc7+ Ke8 27. Qxc8+ {[%mdl 64] Double Attack} Kf7 28. Qd7+ Kf6 29. Qg7#) 24. Qh4+ Kg8 {[%csl Ga2][%CAl Rb2c2]} 25. Qd8+ {[%mdl 64] Double Attack} Kh7 $1 {[%csl Ga2][%CAl Rb2c2]} ({Inferior is} 25... Rf8 {[#]} 26. Rxg7+ $3 {[%mdl 512]} Kxg7 27. Rg1+ Kf7 28. Qxc7+ {[%mdl 64] Double Attack} Ke8 29. Qxc8+ {[%mdl 64] Double Attack} Kf7 30. Qd7+ Kf6 31. Qg7#) 26. Qh4+ Kg8 {[%csl Ga2][%CAl Rb2c2] Weighted Error Value: White=0.08/Black=0.05} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.3"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1/2-1/2"] [ECO "A03"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "106"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,106,-4,7,-26,-28,-20,-23,-31,-31,-38,-6,-39,-34,-27,12,23,33,-24,-18, -76,7,0,13,19,63,63,56,61,69,66,56,0,0,0,0,0,0,0,0,0,0,0,0,0,14,0,9,14,10,8, 122,131,114,45,43,45,112,21,36,0,0,0,0,0,0,0,0,0,0,0,84,84,99,99,98,99,225,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. f4 d5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. d3 c5 (6... Nc6 7. e3 Bf5 8. Nc3 Qc8 9. Qe2 Bh3 10. e4 Bxg2 11. Kxg2 d4 12. Nd1 e6 13. Nf2 Qd7 14. Bd2 Ne8 15. e5 f5 16. exf6 Nxf6 17. Rae1 Rae8 18. Ne4 Qd5 19. a3 e5 20. Nxf6+ Bxf6 {1/2-1/2 (42) Harika,D (2492)-Kosteniuk,A (2546) Hengshui 2019}) 7. Qe1 d4 8. c4 {A03: Bird's Opening with 1...d5.} Nc6 9. Na3 Rb8 10. Bd2 {Black has an edge.} a6 11. Rc1 Ng4 12. Nc2 b5 13. h3 { [#] Hoping for cxb5.} Nh6 $146 ({Predecessor:} 13... Nf6 14. Ng5 Qb6 15. Na3 Bb7 16. Kh2 Rfc8 17. b3 e6 18. Nb1 Ne7 19. Nf3 h5 {0-1 (63) Bezold,M (2510) -Rizouk,A (2373) Werther 2001}) 14. cxb5 axb5 15. Na3 (15. Qf2 $14) 15... Qb6 $11 16. g4 {[#]} (16. e4 $11) 16... f6 (16... f5 $1 $17) 17. b4 cxb4 18. Nc2 Be6 19. Nxb4 Nxb4 20. Bxb4 Rfc8 21. a3 f5 22. Ng5 (22. g5 $14 Nf7 23. Bxe7) 22... fxg4 23. Rxc8+ Rxc8 24. Qh4 gxh3 25. Bxh3 Bxh3 26. Qxh3 Qc6 27. Bd2 { Black must now prevent Rc1.} Qa6 (27... Qe8 {keeps more tension.} 28. Rc1 Rxc1+ 29. Bxc1 Kh8 30. Kf2 Qc6) 28. Kf2 Rc6 29. Rh1 Qc8 30. Qxc8+ Rxc8 31. Rb1 e5 ( 31... Bf6 $11) 32. Rxb5 $16 exf4 33. Ne6 (33. Bxf4 $16 Nf7 34. Ne6) 33... Ng4+ 34. Kf3 {[%mdl 64] Double Attack} Ne3 {[#]} ({Black should play} 34... Nh2+ $14 35. Kg2 Bf6) 35. Nxg7 (35. a4 $1 $16) 35... Kxg7 {[%mdl 4096] Endgame KRB-KRN} 36. Rb7+ Kf6 37. Kxf4 h5 38. Bxe3 dxe3 $11 {KR-KR} 39. Rb6+ (39. a4 {is more complex.} g5+ 40. Kxe3 Rc1 41. a5 Ra1 42. Ra7) 39... Kg7 40. Kxe3 Rf8 41. a4 h4 (41... g5 $11 {remains equal.}) 42. a5 $16 h3 43. Rb1 g5 44. a6 g4 (44... Kg6 $16) 45. a7 $2 (45. Rb4 $18) 45... h2 $11 {The position is equal.} 46. a8=Q ( 46. Rh1 {seems wilder.} g3 47. a8=R Rxa8 48. Kf3 Re8 49. Kxg3 Rxe2 50. Rxh2 Rxh2 51. Kxh2 Kf6 52. Kg2) 46... Rxa8 47. Kf4 Ra2 48. Rh1 Rxe2 {...Rg2 is the strong threat.} 49. Kxg4 Kf6 50. Kg3 Ke5 51. Rxh2 Rxh2 52. Kxh2 Kd4 53. Kg3 Kxd3 {Weighted Error Value: White=0.17/Black=0.20} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.4"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1-0"] [ECO "C15"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "85"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,85,8,24,9,36,32,58,67,121,26,26,27,69,67,64,39,48,47,70,77,111,2,16, -38,-23,-106,-53,-137,-39,-32,-45,-41,-8,-30,-27,-38,0,-2,14,0,4,0,72,63,121, 125,112,102,97,107,132,105,143,133,217,217,210,212,196,98,287,252,411,406,421, 427,623,612,595,549,769,704,670,622,989,989,966,962]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 Nf6 5. e5 Nfd7 6. a3 {C15: French: 3 Nc3 Bb4: Unusual White 4th moves.} Bf8 7. f4 {[#]} g6 $146 ({Predecessor:} 7... c5 8. Be3 Nc6 9. g3 b6 10. Bh3 Ba6 11. f5 exf5 12. Nxd5 cxd4 13. Nxd4 Ndxe5 14. Nxc6 Nxc6 {1-0 (22) Bortnyk,O (2598)-Morozov,G (2361) Chess.com INT 2020}) 8. Be3 {White is slightly better.} b6 (8... c5 $14) 9. h4 (9. f5 $16) 9... h5 $1 $11 10. Ng1 Ba6 11. Bxa6 Nxa6 12. Qe2 Qc8 13. Nf3 Qb7 14. Ng5 Be7 15. b4 (15. g4 $16) 15... c6 16. Qd3 (16. g4 $11) 16... Nc7 $15 17. Rh3 {[#]} (17. O-O $11) 17... Qa6 (17... a5 $1 $17 {[%CAl Ra5b4]} 18. Rb1 b5) 18. Bf2 (18. Qxa6 $15 Nxa6 19. Bd2) 18... Rf8 ({Better is} 18... Qxd3 $17 19. Rxd3 a5) 19. Qxa6 Nxa6 20. Na4 Rc8 21. Rb1 Nc7 22. Rhb3 f6 23. Nf3 fxe5 24. fxe5 Rf5 25. Nc3 {[%CAl Ba4c3,Bc3e2,Be2f4] [%mdl 32]} Kf8 (25... b5 $11 {keeps the balance.}) 26. Ne2 Kg7 (26... b5 $14) 27. a4 $16 Ne8 28. Be3 Kg8 29. Nf4 Kf7 30. Rc1 b5 31. Ra1 a6 (31... Nc7 $16) 32. axb5 $18 axb5 33. Ra7 Rc7 34. Ra8 (34. Ra6 $18) 34... Nf8 $2 {This move loses the game for Black.} (34... Nb6 $16 35. Ra1 Na4) 35. c3 Ng7 $2 (35... Rb7 36. Rba3 Nc7) 36. Rba3 g5 37. hxg5 {White is clearly winning.} Bxg5 (37... Rd7 $142 38. R3a7 Rxa7 39. Rxa7 Ke8) 38. Nxg5+ Rxg5 {[#]} 39. Nxd5 $1 {[%mdl 512]} cxd5 (39... Rxe5 40. Nxc7) 40. Bxg5 Kg6 41. Bf6 Nh7 42. Bxg7 Rxg7 43. R3a7 { Weighted Error Value: White=0.24/Black=0.39} 1-0 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.5"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1/2-1/2"] [ECO "A34"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "121"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,120,0,11,14,0,18,0,0,-33,-31,-24,1,0,28,25,45,44,53,51,46,53,49,30, 54,47,47,17,20,21,33,25,34,40,83,86,97,95,97,94,97,77,98,79,73,55,48,62,68,64, 79,49,74,0,0,0,10,0,8,0,0,0,0,0,32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 c5 3. c4 Nc6 4. Bg2 d5 5. cxd5 Nxd5 6. O-O e5 7. Nc3 Nc7 {7...Be6 is the fancy move.} 8. a3 Rb8 {A34: Symmetrical English: 2 Nc3, lines with ...d5.} 9. Rb1 Be6 10. d3 Be7 11. Bd2 {[#]} O-O $146 ({Predecessor:} 11... f6 12. Ne4 Nd5 13. Rc1 Qb6 14. Qc2 Nd4 15. Nxd4 cxd4 16. Nc5 Bf7 17. Qa4+ Qc6 18. Qxa7 {1/2-1/2 (45) Dallakian, O-Hoffmann,A Bergneustadt 2000}) 12. b4 {Black should prevent b5.} cxb4 13. axb4 f6 14. b5 Nd4 15. Qa4 Bc5 16. Nxd4 Bxd4 17. Rfc1 f5 18. Qc2 Nd5 19. Nxd5 Bxd5 20. Bxd5+ (20. Ba5 {seems wilder.} Bb6 21. Bxb6 axb6 22. Qc7 Bxg2 23. Kxg2 Qd5+ 24. f3) 20... Qxd5 21. Qc4 Qxc4 22. Rxc4 Rfd8 23. Ba5 Rd7 {[#]} 24. b6 $1 axb6 25. Bxb6 Bxb6 26. Rxb6 $16 {[%mdl 4096] Endgame KRR-KRR} Re8 27. Kg2 Kf7 28. Rc5 Re6 29. Rb3 (29. Rbb5 {is interesting.} Kf6 30. Rc8 e4 31. Rf8+ Ke7 32. Rfxf5 exd3 33. exd3 Red6 34. Rb4) 29... b6 30. Rcb5 Rb7 31. h4 g6 32. e3 Kf6 33. d4 ({White should play} 33. Kf1 $16) 33... exd4 $11 34. exd4 Rd6 35. d5 Ke5 36. f4+ Kf6 37. Kf3 h6 38. Rb2 g5 39. hxg5+ hxg5 {The position is equal.} 40. Ke3 Re7+ 41. Kd3 gxf4 42. gxf4 Re4 43. Rxb6 Rxb6 44. Rxb6+ {KR-KR} Ke7 45. Re6+ (45. Ra6 {is more complex.} Rxf4 46. Ke3 Re4+ 47. Kd3 Rf4) 45... Rxe6 46. dxe6 Kxe6 {KP-KP} 47. Kc4 Ke7 48. Kd5 Kd7 49. Ke5 Ke7 50. Kxf5 {[#] Kg6 would kill now. KP-K} Kf7 51. Kg5 Kg7 52. f5 $1 Kf7 53. f6 $1 Kf8 54. Kf5 Kf7 55. Ke5 Kf8 56. Ke6 $1 {White threatens f7 and mate.} Ke8 57. Kf5 {White wants to mate with Ke6.} Kf7 58. Kg5 Kf8 59. Kg6 {Intending f7 and mate.} Kg8 60. f7+ Kf8 61. Kf6 {Weighted Error Value: White=0.07/Black=0.07} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.6"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1/2-1/2"] [ECO "C01"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "161"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nc6 5. h3 Bf5 (5... Bd6 6. c4 Bb4+ 7. Nc3 Nge7 8. Bg5 h6 9. cxd5 hxg5 10. dxc6 Nxc6 11. Bb5 O-O 12. O-O g4 13. hxg4 Bxg4 14. Bxc6 bxc6 15. a3 Bxc3 16. bxc3 Qf6 {1/2-1/2 (45) Kosteniuk,A (2557)-Harika, D (2504) Huaian 2017}) 6. Bb5 {C01: French: Exchange Variation.} Bd6 7. c4 dxc4 8. O-O Nge7 9. Nc3 O-O (9... Bd3 $5) 10. Bxc4 {[#]} Ng6 $146 ({Predecessor:} 10... Qd7 11. Re1 Ng6 12. a3 Rae8 13. Be3 Nf4 14. d5 Nxh3+ 15. gxh3 Bxh3 16. Ng5 Ne5 {1-0 (42) Terry,R (2905)-Raptis,N (2465) Chess.com INT 2020}) 11. Bg5 Qd7 12. d5 Nce5 13. Bb5 Qc8 14. Nxe5 Bxe5 15. Re1 h6 {[#]} (15... f6 $15 16. Be3 Bxh3) 16. Be3 (16. Be7 $1 $11) 16... Bxh3 $1 $17 17. gxh3 (17. Bc5 $17 { was worth a try.}) 17... Qxh3 $19 18. f4 Qg3+ ({Much less strong is} 18... Bxf4 19. Bxf4 Nxf4 20. Bf1 $15) 19. Kf1 $2 (19. Kh1 {was forced.} Nxf4 20. Bxf4 Bxf4 21. Qh5) 19... Qh3+ $2 ({Less strong is} 19... Bxf4 20. Qd2 $17) (19... Nxf4 $19 {[%csl Gf4][%CAl Rg3g2]} 20. Qd2 Qf3+ 21. Qf2 Qh1+ 22. Qg1 Qh3+ 23. Kf2 Qf5 ) 20. Ke2 $4 {[%mdl 8192]} (20. Kg1 $11 {and White has nothing to worry.}) 20... Nxf4+ $2 (20... Bxc3 $19 21. bxc3 Qg2+ 22. Kd3 Qxd5+ {[%mdl 64] Double Attack} 23. Kc2 Qxb5) 21. Bxf4 $11 Bxf4 22. Qd4 $1 {[%CAl Rd4f4]} Qg4+ 23. Kd3 a6 {[#]} (23... c6 $5 24. Rg1 Qf5+ 25. Qe4 Qxe4+ 26. Kxe4 g5 27. dxc6 Rae8+ 28. Kf3 bxc6 29. Bxc6 Re3+ 30. Kg2 Rb8 $14) 24. Rg1 $1 Qh3+ (24... Qf5+ $1 $11 { remains equal.} 25. Qe4 Qxe4+ 26. Kxe4 g5) 25. Kc2 $16 {[%csl Gg1][%CAl Rd4g7]} Bg5 26. Bd3 Rae8 ({Black should try} 26... Qh2+ 27. Kb3 Rfe8) 27. Qg4 (27. Ne4 $1 $16 {[%CAl Re4g5]}) 27... Qe3 (27... Re3 $14 28. Qxh3 Rxh3) 28. Qg2 Qc5 29. Rae1 (29. Rad1 $16) 29... Bf6 30. Kb1 Bxc3 (30... Rxe1+ $14 31. Rxe1 Bxc3) 31. bxc3 $2 (31. Rc1 $16) 31... Qxc3 $11 {[%mdl 64] Double Attack} 32. Rxe8 { [%mdl 8192]} (32. Rd1 $15) 32... Rxe8 $2 (32... Qxd3+ $19 {and Black stays clearly on top.} 33. Qc2 Qb5+ 34. Qb2 Qxb2+ 35. Kxb2 Rxe8) 33. Bc2 a5 (33... Re1+ $142 34. Rxe1 Qxe1+ 35. Kb2 Qe5+ 36. Kb1 g6) 34. Rf1 (34. Qf2 $17 { might work better.}) 34... Qb4+ 35. Kc1 Qa3+ (35... Re1+ $19 36. Rxe1 Qxe1+ 37. Bd1 Qc3+ 38. Bc2 Qe1+ 39. Bd1 Qc3+ 40. Kb1 Qb4+ 41. Kc1 g6) 36. Kb1 $17 {[#]} Qb4+ (36... Re1+ $1 $15 37. Rxe1 Qb4+ {[%mdl 64] Double Attack} 38. Bb3 Qxe1+ 39. Kc2 g5) 37. Kc1 $1 Qd4 (37... Re1+ $17 38. Rxe1 Qxe1+ 39. Bd1 Qc3+ 40. Kb1 Qb4+ 41. Kc1 Qc3+ 42. Kb1 Qb4+ 43. Kc2 Qa4+ 44. Kc1 Qa3+ 45. Kb1 g6) 38. Qf3 $15 Rf8 (38... Re7 $15) 39. Qd3 (39. a4 $11) 39... Qxd3 $1 40. Bxd3 {[%mdl 4096] Endgame KRB-KR} g6 41. Kc2 Rd8 42. Bc4 Kg7 43. Kc3 f5 ({Black should play } 43... h5 $17 44. d6 f5 45. dxc7 Rc8) 44. Kd4 (44. Rb1 $11) 44... Kf6 (44... Re8 $17 45. Rb1 b6) 45. Re1 (45. Rb1 $15) 45... Rd6 ({Better is} 45... h5 $17 46. Re6+ Kg5) 46. Re8 h5 47. Rf8+ Kg5 48. Rc8 $2 (48. Rf7 $11 {and White stays safe.}) 48... Rd7 $19 49. Bb5 (49. Ke3 $142) 49... Re7 50. Bd3 h4 51. Rb8 $2 ( 51. Rh8 $17) 51... b6 (51... Re1 $19 {has better winning chances. White must now prevent ...h3.} 52. Rxb7 h3) 52. Rh8 $17 Kg4 (52... b5 $142 53. Bxb5 Kg4) 53. Rh6 {[#]} g5 (53... Rg7 $1 $17 {aiming for ...f4.} 54. Ke5 Kg5) 54. d6 $2 { [%mdl 8192]} (54. Rf6 $15) 54... cxd6 $19 55. Rxd6 f4 56. Rxb6 h3 57. Rh6 Kg3 58. Bf5 h2 59. Rh5 g4 60. Bxg4 Kxg4 61. Rxh2 {KR-KR} Kg3 62. Rh8 f3 63. Rg8+ Kf2 64. Rg5 Ke2 65. Rxa5 f2 66. Rf5 f1=Q 67. Rxf1 Kxf1 {KR-KP} 68. Kc4 Ke2 $2 ( 68... Ra7 {mates} 69. Kb3 Ke2 70. a4 Kd3 71. Kb4 Kd4 72. Kb5 Kd5 73. a5 Rb7+ 74. Ka4 (74. Ka6 Rb2 75. Ka7 Kc6 76. a6 Ra2 $19) 74... Kc5 75. a6 Ra7 76. Ka5 Ra8) 69. a4 $11 {The position is equal.} Ke3 70. a5 $1 Ra7 (70... Re5 {keeps more tension.} 71. Kb4 Ke2 72. a6 Kf2 73. a7 Re8) 71. Kb5 Kd4 {And now . .. Rb7+ would win.} 72. Kb6 Rh7 73. a6 Kc4 74. a7 Rh6+ 75. Kb7 Rh7+ 76. Kb8 Rh8+ ( 76... Re7 {is interesting.} 77. a8=Q Re8+ 78. Kb7 Rxa8 79. Kxa8 Kc5) 77. Kb7 Kb5 {( -> ...Rh7+)} 78. a8=Q Rh7+ 79. Kc8 {Intending Qd5+ and mate.} Rh8+ 80. Kb7 Rxa8 81. Kxa8 {White happily takes the draw. Weighted Error Value: White=0. 98/Black=0.61} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.7"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1/2-1/2"] [ECO "A34"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "123"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 20,123,0,0,6,-13,8,-4,0,0,-2,-41,-30,-39,-20,-45,-47,-81,-78,-97,-37, -81,-97,-97,-88,-123,-106,-129,-131,-131,-100,-196,-127,-122,0,-79,-42,-62,-50, -42,-5,-11,-4,-11,0,-28,0,0,0,0,0,0,0,0,0,0,19,19,122,90,65,98,76,85,186,157, 156,11,13,0,87,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0]} 1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc7 7. O-O e5 8. d3 Be7 9. Be3 O-O 10. Rc1 Rb8 11. a3 Ne6 {A34: Symmetrical English: 2 Nc3, lines with ...d5.} 12. Nd2 {[#]} Ned4 $146 ({Predecessor:} 12... Ncd4 13. f4 Nf5 14. Bf2 exf4 15. gxf4 Nxf4 16. Bf3 Nh3+ 17. Kh1 Nxf2+ 18. Rxf2 Bh4 { 0-1 (35) Marsina,S (1987)-Cehelsky,C (1945) Tatranske Matliare 2012}) 13. Nd5 Bd6 14. Nc4 Be6 15. Nxd6 Qxd6 16. Nc3 f5 17. Bxd4 Nxd4 18. e3 Nb3 19. Rc2 a6 ({ Better is} 19... Rbd8 $17 20. Qb1 Qa6) 20. Qe2 Rfd8 21. Rd1 b5 22. h4 Bf7 23. Bf3 Na5 24. Rcc1 {[%CAl Bc2c1,Bc1f1,Bf1f3][%mdl 32]} Bb3 25. Rd2 (25. Re1 $17) 25... Rbc8 (25... b4 $19 26. Nb1 Ba4) 26. Nb1 $17 f4 (26... Ba4 $17 {Threatens to win with ...Nb3.} 27. Re1 b4) 27. Kg2 (27. Nc3 $11 {remains equal.}) 27... fxg3 28. fxg3 Bd5 {Hoping for ...Nb3.} 29. Rf1 Rf8 30. Nc3 Bxf3+ 31. Rxf3 Qc6 32. Rd1 c4 33. d4 exd4 34. exd4 Rce8 35. Qf2 Rxf3 (35... Nb7 {keeps more tension.} 36. d5 Qd6 37. Rd2 Rxf3 38. Qxf3 Nc5) 36. Qxf3 Qxf3+ 37. Kxf3 $11 { [%mdl 4096] Endgame KRN-KRN} Nb3 38. Ne4 a5 (38... Rf8+ $11 39. Ke3 Re8) 39. d5 b4 40. axb4 axb4 41. d6 Rd8 (41... Ra8 $16) 42. Rd5 Kf7 {[#]} 43. Ng5+ (43. Ke3 $1 $16) 43... Ke8 $1 {White must now prevent ...c3.} 44. Ne6 (44. Nxh7 $2 c3 $19) (44. Re5+ {feels hotter.} Kd7 45. Ne4 Re8 46. Kf4 Rf8+ 47. Ke3) 44... Rd7 {[#]} (44... c3 $1 $11 45. bxc3 (45. Nxd8 $2 Kxd8 46. bxc3 bxc3 $19) (45. Nxg7+ $2 Kf7 $19) 45... bxc3) 45. Nd4 ({White should play} 45. Ke3 $1 $16) 45... Nxd4+ {The position is equal.} 46. Rxd4 {KR-KR} c3 47. bxc3 bxc3 48. Ke2 Rf7 49. Kd1 Rf3 50. g4 Kd7 51. Kc2 Rg3 52. g5 h6 53. gxh6 gxh6 54. Rf4 Kxd6 55. Rf6+ Ke5 (55... Kc5 {with more complications.} 56. Rxh6 Rh3 57. Rh8 Kd4 58. Rd8+ Ke5) 56. Rxh6 Kd4 57. Rd6+ Kc4 58. Rc6+ Kd4 59. Rd6+ Kc4 60. Rc6+ Kb4 61. Rb6+ Kc4 62. Rc6+ {White used his chance. Weighted Error Value: White=0.21/ Black=0.18} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.8"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1-0"] [ECO "C15"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "145"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 19,145,-12,-10,-37,-36,-15,21,7,98,104,233,66,45,51,66,-382,50,53,75,87, 193,43,51,42,41,43,60,62,189,64,77,71,67,23,68,58,54,40,60,33,60,37,42,23,25,4, 11,8,2,16,58,0,9,0,0,0,47,0,0,0,49,0,59,16,56,49,69,56,58,0,104,104,213,200, 509,497,538,539,497,493,472,453,1550,897,931,799,1596,607,522,495,1554,1543, 1535,1197,1494,1474,1554,1435,1455,1381,1594,1452,1301,1314,1275,0,1231,1222, 1175,1170,1129,1129,1129,1086,561,289,289,289,29974,29975,29971,8,289,289, 29987,29988,29988,29989]} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 dxe4 5. a3 Bxc3+ 6. Nxc3 Nc6 7. Bb5 Nge7 8. Bg5 f6 9. Be3 f5 10. Qd2 O-O 11. f3 {C15: French: 3 Nc3 Bb4: Unusual White 4th moves.} exf3 12. O-O-O f4 13. Bxf4 {The position is equal.} fxg2 (13... e5 $11 {keeps the balance.} 14. Bxe5 Nxe5 15. dxe5 Qxd2+ 16. Rxd2 fxg2 17. Rxg2 Be6) 14. Rhg1 $16 e5 {[#]} ({Much worse is} 14... Ng6 15. Be3 $11) (14... a6 $16 15. Bxc6 (15. Qxg2 g6 $14) 15... Nxc6) 15. Bc4+ $146 (15. Qxg2 $18 {[%csl Gg1][%CAl Rg2g7]} Nf5 16. dxe5) ({Predecessor:} 15. Qxg2 Nf5 16. dxe5 Qe8 17. Nd5 Qf7 18. Bc4 Be6 19. Qe4 Kh8 20. Bg5 Rac8 21. Be2 { 0-1 (30) Holzhaeuer,M (2355)-Duppel,M (2315) Wuerttemberg 1998}) 15... Kh8 $14 16. Qxg2 {[%csl Gg1][%CAl Rg2g7]} Ng6 17. dxe5 {[%mdl 8192]} (17. Bxe5 $14 { keeps the upper hand.} Ncxe5 18. dxe5) 17... Qe8 $2 {[#]} (17... Qh4 $19 18. Bd3 Rxf4 19. Bxg6 Rg4) 18. Nd5 $36 {[%mdl 2048] Black is under pressure.} Qf7 ( 18... Rf7 19. Bg3) 19. Rgf1 {Black must now prevent Bg5.} Be6 {[#]} (19... Bf5 $16) 20. Bg3 (20. Bh6 $1 $18 {[%mdl 512]} Qg8 21. Nf6 Bxc4 22. Nxg8 Rxf1 23. Rxf1) 20... Qg8 21. Rxf8 Rxf8 22. Qe4 a6 23. h4 b5 (23... Bf5 $14 24. Qe1 Be6) 24. Be2 (24. Nxc7 $18 Bxc4 25. Qxc6) 24... Nge7 {[%CAl Re6d5]} 25. Nxe7 ({ Reject} 25. Nxc7 Bf5 $11) 25... Nxe7 {[%CAl Bc6e7,Be7f5,Bf5d4][%mdl 32]} 26. Kb1 Nf5 27. Be1 Rd8 28. h5 Rxd1+ 29. Bxd1 Qd8 {[%CAl Rd8d1]} 30. Be2 (30. Bf3 { keeps more tension.} Nd4 31. Qa8 Qxa8 32. Bxa8 Bd7 33. Bb7) 30... Nd4 {And now ...Bf5 would win.} 31. Bd3 {[%csl Gd3][%CAl Re4h7]} Bf5 32. Qe3 {Threatens to win with e6!} Bxd3 $1 33. Qxd3 Ne6 34. Qf3 Kg8 35. Ba5 ({White should try} 35. b3 $14) 35... Qd7 36. Qa8+ Kf7 37. Qf3+ Ke8 38. Qa8+ Kf7 39. Qf3+ Ke8 40. Qa8+ Qd8 (40... Kf7 $11) 41. Qe4 (41. Qxa6 {is interesting.} Qd1+ 42. Ka2 Qd5+ 43. b3 Qxe5 44. Qc6+) 41... Qd1+ 42. Ka2 Qd7 43. Qxh7 Qd5+ 44. Kb1 (44. b3 $14) 44... Qxe5 (44... Qd1+ $11 45. Ka2 Qd5+ 46. b3 Qxe5) 45. Qg6+ $16 Kd7 (45... Kf8 $16) 46. Bc3 $18 Qd5 (46... Qg5 {is a better chance.}) 47. Bxg7 Qd1+ 48. Ka2 Qd5+ 49. b3 a5 50. h6 a4 (50... Ng5 $142 51. Bf6 Nf7) 51. Qd3 Qxd3 52. cxd3 {[%mdl 4096] Endgame KB-KN} Ng5 53. Bf6 (53. bxa4 $142 bxa4 54. Kb2) 53... Nh7 54. Bd4 Ke6 (54... axb3+ $142 55. Kxb3 Kd6) 55. bxa4 bxa4 56. Kb2 Kd5 57. Kc3 Ng5 58. Bf6 Nh7 59. Bd8 c6 60. Be7 c5 61. Bd8 Nf8 62. Be7 Nh7 63. Kc2 Kd4 64. Kd2 c4 65. dxc4 Kxc4 66. Ke3 {White wants to mate with Kf4.} Kd5 67. Kf4 { Intending Kf5 and mate.} Ke6 68. Bb4 Kf7 $2 (68... Kf6 $18 69. Ke4 Kg6) 69. Kf5 Nf6 70. Bd2 $2 (70. Bc3 {mates} Nh7 71. Bg7 Nf8 72. Bxf8 Kxf8 73. Ke6 Kg8 74. Kd7 Kh8 75. Kc6) 70... Nd5 $2 {[%mdl 8192] [#]} (70... Ng8 $1 $11 {and Black is okay.}) 71. Bc1 $1 Nb6 $2 (71... Kg8 $18 72. Ke4 Ne7) 72. Bb2 Nc4 {[#]} 73. h7 $1 {Weighted Error Value: White=0.54/Black=0.55} 1-0 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.9"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1-0"] [ECO "A30"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "69"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,69,3,23,21,17,-6,-14,-16,0,-3,0,-3,0,-17,1,12,12,6,80,85,148,143,122, 136,139,141,142,152,141,147,546,539,514,535,521,519,609,583,779,671,768,778, 750,777,1138,563,550,550,546,507,507,507,507,507,463,438,566,441,957,944,5365, 1975]} 1. b3 c5 2. Bb2 Nc6 3. c4 Nf6 4. e3 e5 5. Nc3 d5 6. cxd5 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} Nxd5 7. Bc4 Be6 {[#]} 8. Qe2 $146 {The position is equal.} ({Predecessor:} 8. Nge2 Be7 9. O-O O-O 10. d3 a6 11. Nxd5 Bxd5 12. Nc3 Bxc4 13. dxc4 Nb4 14. Nd5 Nxd5 15. Qxd5 Qxd5 16. cxd5 {1-0 (63) Richter,N (2294)-Ptacnikova,L (2130) Chess.com INT 2021}) 8... Nc7 9. Nf3 Be7 10. O-O O-O 11. Rad1 Bg4 12. h3 Bh5 13. Ne4 Kh8 (13... Bg6 $11 14. Ng3 Bf6) 14. Ng3 $16 Bg6 (14... Bxf3 $142 15. Qxf3 g6) 15. d4 exd4 16. exd4 cxd4 17. Nxd4 Nxd4 18. Bxd4 Qe8 19. Rfe1 Bb4 $4 {[%mdl 8192] [#] A mistake that costs the game.} (19... Ne6 $16 {is more resistant.}) 20. Bxg7+ $1 $18 { [%mdl 512] White is clearly winning.} Kxg7 (20... Kg8 21. Qb2) 21. Qb2+ Kg8 22. Rxe8 Raxe8 23. h4 h5 24. a3 Bc5 25. b4 Bb6 26. Qf6 {[#] White wants to mate with Qxg6+.} Ne6 27. Nf5 (27. Rd6 $142 Kh7 28. Bxe6) 27... Bxf5 28. Qxf5 { Intending Rd7 and mate.} Ng7 29. Qg5 Re4 30. Bd3 Re6 31. g3 Rfe8 32. Kg2 Kf8 33. Rd2 Re5 (33... Rd6 $142 34. Qf4 Ree6) 34. Qh6 Kg8 35. Qh7+ {Weighted Error Value: White=0.34/Black=0.61} 1-0 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.10"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1/2-1/2"] [ECO "E62"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "81"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 17,81,35,32,11,8,-10,0,0,0,-18,-9,-18,-19,-33,-33,-64,-71,-94,-9,-20,5, 6,27,22,30,0,0,0,0,0,0,0,0,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,8,8,8,0,0,0,0,0,0, 0,0,0,0,0,0,0]} 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d6 6. c4 Nbd7 7. Nc3 e5 8. dxe5 Nxe5 9. Nxe5 dxe5 10. Qb3 {E62: King's Indian: Fianchetto: 6. ..c6 and Panno Variation (6...Nc6) without ...a6.} c6 11. h3 Qc7 12. Be3 Be6 { [#]} 13. Qa4 $146 ({Predecessor:} 13. a4 Nd7 14. Ne4 b5 15. axb5 cxb5 16. Qxb5 Bxc4 17. Rfc1 Bxb5 18. Rxc7 Rfc8 19. Rxc8+ Rxc8 {1-0 (29) Voskanyan,V (2188) -Dumont,F (1955) Montreal 2009}) 13... Rfd8 14. Rfd1 Nd7 15. b3 Bf8 16. Ne4 h6 17. c5 {[#]} Bd5 (17... f5 $1 $17 {[%CAl Rf5e4]} 18. Nd6 {[#]} Nxc5 $1 { [%mdl 64] Remove Defender} 19. Bxc5 Bxd6 20. Bxd6 Rxd6) 18. b4 Bxe4 19. Bxe4 Nf6 20. Bg2 Nd5 21. Qb3 {[%CAl Rg2d5]} Nxe3 {The position is equal.} 22. Qxe3 a5 23. a3 Kh7 24. Qb3 axb4 {Hoping for ...Rxd1+.} 25. axb4 Rxa1 26. Rxa1 Bg7 ( 26... f5 {feels hotter.} 27. Ra7 e4 28. Bf1 h5 29. e3 Qe7) 27. Rd1 Rxd1+ 28. Qxd1 f5 29. e3 e4 30. Bf1 h5 31. Bc4 Bf6 32. Ba2 h4 33. g4 {Black must now prevent gxf5.} Kh6 34. gxf5 gxf5 35. Qb3 Qg7+ 36. Kf1 Kg5 37. Qe6 Qe7 38. Qg8+ Qg7 39. Qe6 Qe7 40. Qg8+ Qg7 41. Qe6 {Weighted Error Value: White=0.06/Black=0. 08} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.11"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1-0"] [ECO "A05"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "87"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,87,6,35,30,41,24,25,24,51,36,45,-8,38,22,41,-7,0,-16,0,-14,31,22,31, 22,18,29,106,-5,-16,-12,-14,-64,77,60,72,79,66,37,47,46,44,25,55,0,33,52,45,47, 79,73,82,80,157,104,93,89,97,90,117,100,120,37,63,71,125,127,179,160,154,92,72, -35,-19,-98,104,0,139,-94,1147,1134]} 1. b3 b6 2. Bb2 Bb7 3. Nf3 Nf6 4. c4 e6 5. e3 a5 (5... Be7 6. d4 O-O 7. Bd3 d5 8. O-O c5 9. Nbd2 dxc4 10. bxc4 Nc6 11. Rc1 Rc8 12. Qe2 Rc7 13. Rfd1 Rd7 14. Nf1 Nb4 15. Bb1 Ne4 16. a3 Na6 17. d5 exd5 18. cxd5 Ng5 19. e4 Nxf3+ 20. Qxf3 {1-0 (40) Harika,D (2507)-Kosteniuk,A (2527) Khanty-Mansiysk 2014}) 6. Nc3 {[#] A05: Réti Opening: 1 Nf3 Nf6.} Ne4 $146 ({ Predecessor:} 6... Bb4 7. Be2 O-O 8. O-O Bxc3 9. Bxc3 d6 10. d4 Ne4 11. Bb2 Nd7 12. Qc2 f5 {0-1 (79) Ockay,T (2123)-Vaclavik,A (1976) Czech Republic 2006}) 7. Qc2 f5 8. Be2 {White has an edge.} Nf6 9. d3 Be7 10. e4 (10. O-O $14) 10... O-O 11. e5 Nh5 12. Qd2 g5 {Black wants to play ...g4.} 13. h3 Nf4 14. O-O-O a4 ({ Weaker is} 14... Nxg2 15. Rhg1 $16) 15. Nxa4 b5 16. cxb5 c6 $1 17. b6 {d4 is the strong threat.} Na6 (17... Rxa4 $11 {keeps the balance.} 18. bxa4 Qxb6) 18. g3 (18. Kb1 $16) 18... Nxe2+ $11 19. Qxe2 Nb4 20. Kb1 Nd5 {[#]} (20... c5 $15 { stays ahead.} 21. a3 Nd5) 21. Nd2 $1 $16 Nxb6 22. Nxb6 Qxb6 23. Nc4 Qa6 24. a4 c5 25. Rhe1 $36 {[%mdl 2048] White is more active.} Bc6 26. Qc2 (26. Rc1 $14) 26... Bf3 27. Rc1 Rab8 28. Ka2 Rb7 29. Ba3 Rfb8 {[#]} 30. Rb1 Bc6 ({Black should play} 30... h6) 31. Rb2 (31. f4 $142) 31... Bd5 32. f4 h6 33. Reb1 Kg7 34. Qd2 Rg8 35. Qc3 (35. g4 $16) 35... Kh7 36. fxg5 Rxg5 (36... hxg5 $142 37. Qd2 Qa7) 37. g4 fxg4 (37... Rb8 $16) 38. hxg4 $18 Rxg4 39. Qc2 (39. Rf1 $142) 39... Rb8 40. d4+ (40. Rf1 $16) 40... Be4 $15 41. Qe2 (41. Qd1 $11 Rg3 42. Rc1) 41... Rbg8 $2 (41... Bxb1+ $17 {and life is bright.} 42. Rxb1 Rg3) 42. Re1 ({ Better is} 42. Rf1 $16 Bf5 43. Bxc5) 42... Bf5 (42... Bd5 $11) 43. Nd6 $2 (43. dxc5 $16 {keeps the pressure on. Threatens to win with Ne3.} Qc6 44. Ne3) 43... Bxd6 $4 {[%mdl 8192]} (43... Qxe2 $17 44. Rbxe2 Bxd6 45. exd6 cxd4) 44. Qxa6 { Weighted Error Value: White=0.40/Black=0.36} 1-0 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.12"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "0-1"] [ECO "E94"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "126"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,126,39,39,18,33,22,18,18,23,25,28,0,-3,-7,-18,-17,-3,-17,0,-10,52,47, 57,35,45,52,57,72,57,22,60,8,10,-62,4,-87,-85,-94,-87,-185,-192,-273,-192,-191, -183,-177,-172,-238,-158,-191,-164,-231,-219,-238,-224,-258,-263,-259,-246, -302,-180,-176,-193,-225,-164,-262,-254,-208,-28,-28,0,-50,0,-73,-73,-73,0,-8, -8,-8,-7,-53,0,0,4,4,4,4,4,4,5,0,20,0,29978,39,39,-577,-552,-1073,-393,-552, -425,-507,-359,-29977,-29978,-29978,-29979,-29987,-29988,-29988,-29989,-29989, -29990]} 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 e5 7. O-O Bg4 8. dxe5 {E94: King's Indian: Classical: 6 Be2 e5 7 0-0: Various Black 7th moves.} Bxf3 9. exf6 Bxe2 10. Qxe2 {The position is equal.} Qxf6 {[#]} 11. Nd5 $146 ({Predecessor:} 11. Be3 Qe6 12. Nd5 Na6 13. f3 c6 14. Nf4 Qe7 15. Rfd1 Rfe8 16. Rab1 f5 17. Bd4 fxe4 18. Bxg7 Qxg7 19. Rxd6 {1/2-1/2 (74) Sumets,A (2546)-Supi,L (2572) Chess.com INT 2021}) 11... Qd8 12. Qg4 c6 13. Nc3 Nd7 { [%CAl Bb8d7,Bd7e5,Be5g6,Bg6f4][%mdl 32]} 14. Rd1 Qe7 15. Qg3 Ne5 16. b3 h5 ( 16... f5 $11) 17. Ba3 $14 Rfd8 18. h3 h4 19. Qe3 g5 20. Ne2 Ng6 21. Rab1 Rd7 22. Rd3 (22. Re1 $14) 22... Re8 $11 23. Qc1 (23. Kf1 $11) 23... Be5 ({Don't go for} 23... Qxe4 $2 24. Re3 $18) (23... Qd8 $15) 24. c5 (24. Qf1 $11) 24... Nf4 $17 25. Nxf4 Bxf4 {[%mdl 64] Discovered Attack} 26. Qc4 (26. Qf1 $17) 26... d5 $1 $19 {[%CAl Rd5c4]} 27. Qa4 (27. Qd4 {is a better defense.}) 27... Qxe4 28. Qxe4 Rxe4 $40 {[%mdl 128] Black has strong attack.} 29. Kf1 Kh7 30. g3 (30. Re1 $142 Rxe1+ 31. Kxe1) 30... Bc7 31. Bc1 f6 32. Bd2 (32. f3 $142 Re8 33. gxh4) 32... Rde7 33. b4 a6 34. a4 hxg3 35. fxg3 Be5 36. Kg2 Rd4 (36... Re2+ $142 37. Kf1 Rh2) 37. Rxd4 Bxd4 {[%mdl 4096] Endgame KRB-KRB} 38. Kf3 Kg6 39. h4 (39. Re1 {was necessary.} Rh7 40. Kg2) 39... gxh4 40. gxh4 Kf5 $2 ({Black should play} 40... Re4 $19 41. Rh1 Kh5) 41. h5 $11 Be5 42. h6 Rh7 43. b5 {[#]} (43. Rg1 $11 {remains equal.}) 43... axb5 $1 $17 44. axb5 Kg6 (44... Bd4 $17 45. bxc6 bxc6) 45. bxc6 bxc6 46. Rb6 Rc7 47. Ra6 f5 (47... Bd4 $15 48. Ra5 Be5) 48. Ra8 $11 f4 49. Re8 Bd4 50. Bxf4 Rf7 51. Kg4 Bxc5 52. Rc8 (52. Re6+ {feels hotter.} Kh7 53. Rxc6 Bf8 54. Rb6 Bc5 55. Rb1) 52... Rf6 53. Rg8+ (53. Be5 { is interesting.} Re6 54. h7 Kxh7 55. Kf5 Rxe5+ 56. Kxe5 Bf2 57. Rxc6 d4 58. Kf6 ) 53... Kf7 $2 {[%mdl 8192]} (53... Kh7 $11 54. Rg7+ Kh8) 54. Rg7+ $2 (54. h7 { mates} Bd4 55. h8=Q Rxf4+ 56. Kxf4 Bxh8 57. Rxh8 c5 58. Ke5 d4 59. Rc8) 54... Kf8 $1 $14 55. Rc7 $2 {[%mdl 8192] [#]} (55. Rb7 $14 {stays ahead.} Bd4 56. h7) 55... Rxf4+ $1 $19 {[%mdl 512] KRB-KR} 56. Kg5 (56. Kh5 Kg8) 56... Rf2 $2 ( 56... Be7+ 57. Kg6 Rg4+ 58. Kh5 Rg5+ 59. Kh4 Rg2+ 60. Kh3 {[#]} Rh2+ $3 { [%mdl 512]} 61. Kg4 Rxh6) 57. Rxc6 (57. h7 $142 Be3+ 58. Kg6 Rg2+ 59. Kf6 Bd4+ 60. Ke6 Rg6+ 61. Kf5) 57... Be3+ 58. Kg6 Rg2+ 59. Kh7 $2 (59. Kf5 $19 Rg5+ 60. Kf6) 59... Rh2 {Black mates.} 60. Rf6+ Ke7 61. Ra6 {[#]} Rxh6+ $1 62. Rxh6 Bxh6 63. Kxh6 d4 {Black used his chance. Weighted Error Value: White=0.70/Black=0.49 } 0-1 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.13"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "0-1"] [ECO "A14"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "60"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 21,60,5,7,0,17,3,4,12,18,0,0,-63,-58,-52,-32,-72,-64,-74,-70,-117,-40, -122,-139,-179,-159,-144,-76,-76,-72,-182,-184,-385,-250,-242,-215,-524,-518, -1062,-1048,-29989,-29990]} 1. b3 b6 2. Bb2 Bb7 3. Nf3 Nf6 4. g3 e6 5. Bg2 Be7 6. O-O O-O 7. c4 c5 8. Nc3 d5 9. e3 dxc4 10. bxc4 Nc6 11. Qe2 Qc7 12. Rfd1 { A14: English Opening: 1...e6 with b3 by White.} (12. Ne1 Rad8 13. f4 Nb4 14. Bxb7 Qxb7 15. a3 Nc6 16. g4 Na5 17. d3 Nd7 18. g5 f5 19. Rd1 Rfe8 20. Nf3 { 1/2-1/2 (53) Harika,D (2518)-Kosteniuk,A (2483) Moscow 2019}) 12... Rad8 13. Rac1 {has lost popularity (13.d3).} a6 {[#]} 14. Ne1 $146 {The position is equal.} ({Predecessor:} 14. d4 cxd4 15. exd4 Na5 16. Nb1 Rc8 17. Nbd2 Rfd8 18. Re1 Bb4 19. d5 Qe7 20. a3 Bxd2 21. Nxd2 {1-0 (32) Mieszke,M (2525)-Berardino,D (2632) Chess.com INT 2020}) 14... Ne8 15. f4 Nd6 16. g4 ({Better is} 16. d3 $11 ) 16... Na5 $1 $15 17. d3 Bxg2 18. Nxg2 b5 19. cxb5 axb5 20. g5 c4 (20... Qb7 $17 21. Rd2 c4) 21. Nb1 ({White should try} 21. Ba3 $15) 21... Nf5 22. dxc4 Nxc4 23. Nd2 Qa7 (23... Qb7 $142 24. Nxc4 Rxd1+ 25. Rxd1 bxc4) 24. Nxc4 $17 bxc4 25. Bc3 (25. Rxc4 $17 {is a better defense.} Nxe3 26. Nxe3 Rxd1+ 27. Qxd1 Qxe3+ 28. Kg2) 25... Bc5 $19 {[%CAl Rf5e3]} 26. Kh1 $2 {[#]} (26. Rxd8 { was worth a try.} Rxd8 27. Bd2) 26... Bxe3 27. Rxd8 Rxd8 28. Rf1 (28. Nxe3 Nxe3 29. a4) 28... Rd3 29. Be5 (29. Rd1 $142 Rxd1+ 30. Qxd1) 29... Qb7 30. Rd1 Nh4 { Weighted Error Value: White=1.10/Black=0.22} 0-1 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.14"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "0-1"] [ECO "B00"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "166"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,166,46,63,0,5,0,4,3,-1,1,-1,-28,-24,-28,-5,-39,-26,-40,-26,-51,-48, -209,-81,-45,0,-1,62,0,0,-6,88,0,9,0,0,14,17,0,13,-12,-13,-195,0,-278,-266, -270,-163,-175,-174,-170,-164,-164,-163,-152,-159,-202,-162,-285,-275,-284, -283,-337,-309,-319,-310,-735,-735,-942,-716,-5219,-587,-1300,-585,-563,-556, -544,-474,-460,-454,-429,-413,-732,-414,-462,-416,-560,-547,-539,-495,-526, -512,-478,-318,-311,-311,-282,-241,-310,-310,-301,-305,-291,-279,-272,-270, -261,-210,-210,0,-291,-287,-277,-239,-316,-261,-262,-217,-327,-316,-325,-300, -387,-372,-318,-315,-312,-310,-450,-419,-369,-369,-669,-600,-564,0,-551,-549, -682,-514,-777,-497,-929,-861,-12849,-12849,-27999,-27999,-27999,-27999,-27999, -27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999,-27999]} 1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Nc3 g6 5. d5 Ne5 {[#]} 6. Nd2 $146 {B00: Queen's Fianchetto Defence, Nimzowitsch Defence.} (6. Nxe5 $14 dxe5 7. Bb5+ Bd7 8. Qe2) ({Predecessor:} 6. Nxe5 dxe5 7. Bb5+ Bd7 8. Bxd7+ Nxd7 9. h4 Nf6 10. Qe2 Qd7 11. Bg5 Bg7 12. O-O-O h6 13. Bxf6 Bxf6 {1-0 (55) Rooze,J (2272)-Sciupokas,A (2016) Bucharest 2019}) 6... Bg7 $11 7. f4 Ned7 8. Nb3 {The position is equal.} O-O 9. Be2 c6 10. dxc6 bxc6 11. Be3 Bb7 12. g4 c5 13. Bf3 a5 14. a4 Nb6 15. e5 $2 {[#]} (15. Qe2 $15) 15... Bxf3 (15... Nxg4 $1 $19 {[%mdl 512]} 16. Bd2 e6 $1 ) 16. Qxf3 $17 Nfd7 17. O-O-O Nc4 (17... Qe8 $11) 18. Bf2 ({White should try} 18. h4 $1 $14) 18... Ndb6 $11 19. Bxc5 Qc7 {[#]} (19... Qd7 $1 $11 {keeps the balance.} 20. Rd4 Qc7) 20. Nb5 $1 Qc8 (20... Qd7 21. Qe4) 21. Bxb6 Nxb6 22. exd6 exd6 23. Nxd6 Qc7 24. Nb5 Qc4 $40 {[%mdl 128] Black is up to no good.} 25. f5 $2 (25. N3d4 $1 $11) 25... Rac8 $2 (25... Nxa4 $19 26. N5d4 Rfc8) 26. Nc3 $4 {[%mdl 8192]} (26. Na3 $1 $11 Qxa4 27. f6 Bxf6 28. Qxf6 Qxb3 29. Kb1) 26... Nxa4 {[%CAl Rg7c3]} 27. f6 Bh6+ 28. Kb1 Nxc3+ 29. Qxc3 Qxc3 30. bxc3 a4 ({ Resist} 30... Rxc3 31. Nxa5 Bg5 32. Rd6 $17) 31. Nd4 Rxc3 32. h4 Bf4 33. Rhe1 ( 33. Rd3 $142 Rxd3 34. cxd3) 33... Bg3 $19 34. Re4 Bxh4 35. Rf1 Rb8+ 36. Ka2 Bg5 37. Nb5 $2 (37. Re5 h6 38. Rd5) 37... Rxc2+ 38. Ka3 h6 39. Kxa4 Rc6 (39... Rb2 $142 {( -> ...Ra8+)} 40. Re7 Rb6) 40. Kb4 Rcb6 (40... Bd2+ $142 41. Ka4 Ra6+ 42. Kb3 Rxb5+ 43. Kc2 Ra2+ 44. Kd3 Rb3+ 45. Kc4 Rb4+ 46. Kd3 Ra3+ 47. Kxd2 Rxe4 ) 41. Re5 Bxf6 42. Rd5 Kg7 43. Kc4 Rc8+ 44. Kd3 Rbc6 45. Nd6 (45. Ke2 $142) 45... Ra8 46. Ne4 Be7 47. Nd2 Ra3+ 48. Ke2 Ra2 49. Rd7 Re6+ 50. Kd3 Rd6+ 51. Rxd6 Bxd6 {[%mdl 4096] Endgame KRB-KRN} 52. Nc4 Be7 53. Ne5 Bf6 54. Nd7 Ra6 { Strongly threatening ...Rd6+.} 55. Ke4 Rd6 56. Nc5 Rc6 57. Kd5 Rb6 58. Nd7 Ra6 ({Black should play} 58... Re6 $19 {And now ...Be7 would win.} 59. Rf4 Be7) 59. Nc5 $2 {[%mdl 8192]} (59. Ke4 $1 $11 Ra4+ 60. Kf3) 59... Ra5 {White must now prevent ...Be7.} 60. Kc4 Ra8 61. Nd7 Ra6 62. Kd5 Re6 63. Nc5 (63. Rf4 {was necessary.}) 63... Re5+ 64. Kc6 Re2 65. Nd7 Rc2+ 66. Kd6 Rd2+ 67. Kc6 Bd4 68. Re1 (68. Kd5 $142) 68... h5 69. gxh5 gxh5 70. Re4 $2 (70. Rf1) 70... Kg6 71. Nf8+ Kg7 72. Nd7 Kh6 73. Re7 f6 74. Re6 (74. Nf8 $142 Kg5 75. Rg7+ Kf5 76. Ng6) 74... Kg5 75. Rd6 (75. Re8 $142) 75... h4 76. Nc5 Bxc5 77. Rxd2 {[#] KR-KB} Be3 $1 {Black mates.} 78. Rd5+ f5 79. Rd3 f4 80. Kd5 h3 81. Ke4 h2 82. Rd1 Kg4 83. Rh1 Kg3 {Weighted Error Value: White=0.88/Black=0.67} 0-1 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.15"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1-0"] [ECO "A30"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "101"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,101,-9,14,-1,-7,-14,-10,-21,-5,-10,-2,-26,0,-54,-18,-24,-25,-27,-24, -67,-57,-54,-18,-54,-16,-56,-35,-32,0,-24,0,-49,0,-43,0,-67,-2,-36,0,0,21,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,-8,0,0,0,0,0,0, 29971,29972,29982,29983,29983,29976,29977,29978,29978,29979,29979,29980,29979, 29975]} 1. b3 c5 2. Bb2 Nc6 3. c4 Nf6 4. e3 e5 5. Nc3 d6 6. a3 {A30: Symmetrical English: Double Fianchetto and Hedgehog.} g6 {[#]} 7. Nge2 $146 ({ Predecessor:} 7. Be2 Bg7 8. Qc2 O-O 9. Nf3 Re8 10. d3 Bf5 11. O-O Qd7 12. e4 Bg4 13. h3 Bxf3 14. Bxf3 {1-0 (39) Vacas Arno,G (1501)-Lara Cabrera,T (1671) Llinars del Valles 2018}) 7... Bg7 8. g3 {The position is equal.} h5 9. Bg2 h4 10. Qc2 Bf5 11. Ne4 (11. d3 $11) 11... Qd7 (11... Nxe4 {is more complex.} 12. Bxe4 hxg3 13. Nxg3 Bh3 14. O-O-O Qd7) 12. Nxf6+ Bxf6 13. Be4 hxg3 14. Nxg3 Bxe4 15. Nxe4 Bg7 16. O-O-O O-O-O 17. Kb1 f5 18. Nc3 e4 19. Rdg1 Rh6 20. Nd5 Rdh8 21. Rg2 Be5 22. Ka2 ({White should play} 22. d3 $11) 22... Qg7 (22... Bxb2 $15 23. Qxb2 Ne5) 23. Rhg1 Bxb2 24. Qxb2 Qxb2+ 25. Kxb2 Ne5 26. Ne7+ Kd7 27. Nxg6 Nxg6 28. Rxg6 Rxg6 29. Rxg6 Rxh2 $11 {[%mdl 4096] Endgame KR-KR} 30. Rg7+ Kc6 31. Rf7 Rxf2 32. Kc3 Rf3 33. Kc2 a6 34. a4 b6 35. Re7 Rf2 (35... f4 {looks sharper.} 36. Rxe4 fxe3 37. Rxe3 Rxe3 38. dxe3 Kc7) 36. Rf7 Rf1 37. Kc3 b5 38. axb5+ axb5 39. Kc2 b4 40. Kb2 Rf3 41. Kc1 Rf2 42. Kc2 f4 43. Rxf4 Rxf4 44. exf4 {White wants to play d3. KP-KP} Kd7 $4 {[%mdl 8192] [#]} (44... d5 $11 45. d3 exd3+ 46. Kxd3 d4) 45. d3 $1 {[%CAl Rd3e4] White mates.} d5 46. cxd5 e3 47. Kd1 Kd6 48. Ke2 Kxd5 49. Kxe3 Kd6 50. Ke4 Ke6 51. d4 {Weighted Error Value: White=0.14/Black=0.32} 1-0 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.16"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1/2-1/2"] [ECO "C03"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "RC"] [PlyCount "68"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] [TimeControl "60+1"] 1. e4 {[%emt 0:00:01]} b6 {[%emt 0:00:01]} 2. d4 {[%emt 0:00:02]} Bb7 {[%emt 0: 00:01]} 3. Bd3 {[%emt 0:00:00]} e6 {[%emt 0:00:01]} 4. Nd2 {[%emt 0:00:02]} Nf6 {[%emt 0:00:05]} 5. Ngf3 {[%emt 0:00:02]} d5 {[%emt 0:00:03]} 6. Qe2 {[%emt 0: 00:02]} dxe4 {[%emt 0:00:14]} 7. Nxe4 {[%emt 0:00:01]} Nxe4 {[%emt 0:00:00]} 8. Bxe4 {[%emt 0:00:00]} Bxe4 {[%emt 0:00:01]} 9. Qxe4 {[%emt 0:00:01]} Qd5 { [%emt 0:00:01]} 10. Qxd5 {[%emt 0:00:01]} exd5 {[%emt 0:00:01]} 11. Bf4 { [%emt 0:00:01]} Nd7 {[%emt 0:00:13]} 12. O-O-O {[%emt 0:00:02]} O-O-O {[%emt 0: 00:01]} 13. Ng5 {[%emt 0:00:01]} Be7 {[%emt 0:00:13]} 14. Rhe1 {[%emt 0:00:12]} Bxg5 {[%emt 0:00:01]} 15. Bxg5 {[%emt 0:00:01]} f6 {[%emt 0:00:00]} 16. Bf4 { [%emt 0:00:01]} Rhe8 {[%emt 0:00:00]} 17. h4 {[%emt 0:00:00]} c6 {[%emt 0:00: 02]} 18. h5 {[%emt 0:00:01]} Nf8 {[%emt 0:00:01]} 19. Kd2 {[%emt 0:00:05]} Kd7 {[%emt 0:00:01]} 20. Be3 {[%emt 0:00:03]} Ne6 {[%emt 0:00:02]} 21. g4 {[%emt 0: 00:02]} h6 {[%emt 0:00:02]} 22. c3 {[%emt 0:00:02]} Ng5 {[%emt 0:00:01]} 23. Bxg5 {[%emt 0:00:04]} fxg5 {[%emt 0:00:01]} 24. Rf1 {[%emt 0:00:08]} Rf8 { [%emt 0:00:01]} 25. Rde1 {[%emt 0:00:00]} Rf4 {[%emt 0:00:01]} 26. f3 {[%emt 0: 00:02]} Rdf8 {[%emt 0:00:01]} 27. Ke3 {[%emt 0:00:00]} R8f7 {[%emt 0:00:01]} 28. Rf2 {[%emt 0:00:04]} a5 {[%emt 0:00:00]} 29. b3 {[%emt 0:00:02]} b5 { [%emt 0:00:02]} 30. Ree2 {[%emt 0:00:03]} Kd6 {[%emt 0:00:01]} 31. Re1 { [%emt 0:00:03]} Rf8 {[%emt 0:00:00]} 32. Ree2 {[%emt 0:00:01]} R8f7 {[%emt 0: 00:01]} 33. Re1 {[%emt 0:00:00]} Rf8 {[%emt 0:00:00]} 34. Ree2 {[%emt 0:00:01]} R8f7 {[%emt 0:00:01]} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.17"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1/2-1/2"] [ECO "A08"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "95"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,95,-13,-5,-10,-23,-19,-27,0,7,14,0,4,-9,14,-7,95,99,91,0,10,-20,5,0, 7,0,10,3,8,0,0,0,35,0,47,43,50,0,0,5,3,-9,129,0,0,0,3,-3,-5,-6,-9,-38,-39,-128, -16,-151,-151,-323,-337,-304,-285,-283,-214,-316,-278,-308,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,-28000,-28000,-28000,-28000]} 1. Nc3 c5 2. d3 d5 3. Nf3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O Nf6 {A08: King's Indian Attack.} 7. e4 d4 8. Ne2 {[#]} Nd7 $146 {Black has an edge.} ({Predecessor:} 8... O-O 9. c3 dxc3 10. Nxc3 h6 11. Be3 Nd4 12. Qd2 Bg4 13. Bxd4 cxd4 14. Nb5 Ne8 {1-0 (52) Jimenez Garcia,E (2355)-Fernandez Sibaja,F (2088) San Jose 2019}) 9. Nd2 e5 10. a4 O-O 11. Nc4 Qe7 12. f4 f5 (12... Nb6 $11) 13. exf5 $16 Rxf5 14. fxe5 (14. a5 $16) 14... Ndxe5 15. Nxe5 Rxe5 16. Nf4 Bf5 $1 17. Bd2 Re8 18. Qf3 Qd7 19. Rae1 Bg4 20. Qf2 Bf5 21. Qf3 h5 22. Rxe5 Rxe5 23. Re1 Rxe1+ 24. Bxe1 Kh7 25. Bd2 Qe7 (25... Ne5 $11 {keeps the balance.} 26. Qf1 (26. Qxb7 $2 Qxa4 27. Nxh5 gxh5 $19) 26... c4 27. dxc4 Bxc2) 26. Qe2 ({Better is} 26. Nxh5 $1 $16 Bh6 27. Nf4) 26... Qxe2 $11 27. Nxe2 Be5 28. Bf4 Bxf4 29. Nxf4 {[%mdl 4096] Endgame KBN-KBN} Nb4 30. Bxb7 Nxc2 31. Kf2 (31. Be4 $15) 31... Nb4 ({Black should play} 31... g5 $17 32. Nxh5 Nb4) 32. Ke2 (32. Be4 $11) 32... g5 $17 33. Nxh5 {[#]} (33. Nd5 $17 {was the only chance.}) 33... Bg4+ $1 $19 ({Weaker is} 33... Nxd3 34. Be4 $17) (33... Bxd3+ 34. Kf3 $17) 34. Bf3 Bxf3+ 35. Kxf3 Nxd3 {KN-KN} 36. Nf6+ (36. b3 { keeps fighting.} Ne5+ 37. Ke2) 36... Kg6 37. Nd7 c4 $2 ({Not} 37... Nxb2 38. Nxc5 Kf5 39. h4 $11) (37... Kf5 $19 {Hoping for ...c4.} 38. a5 c4) 38. Ke4 $11 Nxb2 {[#] aiming for ...d3.} 39. Kxd4 {Black must now prevent a5.} Nxa4 40. Kxc4 Kf5 41. Kb5 Nc3+ 42. Ka6 Ne4 43. h4 g4 44. h5 $1 Nxg3 45. h6 {Threatens to win with h7.} Kg6 46. Ne5+ Kxh6 $2 {[%mdl 8192]} (46... Kh7 $11) 47. Nxg4+ Kg5 48. Kxa7 {[%mdl 32768] Weighted Error Value: White=0.29/Black=0.24. An unexpected result.} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.18"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1/2-1/2"] [ECO "B00"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "103"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,103,22,25,19,19,19,34,19,22,27,35,17,34,-1,25,0,10,-6,19,20,11,-13,33, 21,25,16,38,27,32,20,23,0,0,0,11,10,32,-14,42,37,37,37,44,40,39,33,31,23,76,0, 0,-22,0,-61,0,0,0,0,118,123,126,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,13,8,8,8, 8,0,8,0,0,0,0,0,0,0,8,0]} 1. e4 b6 2. d4 Bb7 3. Bd3 e6 4. Nd2 Nf6 5. Qe2 d5 6. Ngf3 {B00: Queen's Fianchetto Defence, Nimzowitsch Defence.} dxe4 7. Nxe4 Nxe4 8. Bxe4 {White is slightly better.} Bxe4 9. Qxe4 Qd5 10. Qe2 {[#]} Be7 $146 ({ Predecessor:} 10... Bd6 11. O-O O-O 12. c4 Qh5 13. h3 Nd7 14. Be3 e5 15. Qc2 Rfe8 16. dxe5 {1/2-1/2 (16) Gunnarsson,J (2404)-Vidarsson,J (2359) Strandgotu 2001}) 11. Bf4 Bd6 12. Bd2 O-O 13. O-O Nd7 14. c4 Qh5 {Threatening ...Bxh2+!} 15. h3 Nf6 16. Rfe1 Rfe8 17. Bc3 Rad8 18. Rad1 {[%CAl Ba1d1,Bd1d3,Bd3e3][%mdl 32]} h6 19. Rd3 c6 20. Re3 Bf4 21. Rd3 Bc7 22. b3 Qg6 23. Red1 Qf5 (23... Nh5 $1 $11 24. Bd2 e5) 24. Ne5 Bxe5 25. dxe5 Rxd3 26. Rxd3 Ne4 27. Bb2 Nc5 ({ Of course not} 27... Nxf2 28. Rf3 $16) 28. Rd1 Qg5 (28... Nb7 $11) 29. Qc2 (29. Bc1 $16 Qf5 30. g4) 29... Rd8 $11 30. Rxd8+ Qxd8 31. b4 {[#]} (31. Bc3 $11) 31... Qd3 $1 32. Qxd3 $1 Nxd3 {[%mdl 4096] Endgame KB-KN} 33. Bc3 b5 (33... Kh7 $11) 34. cxb5 $16 cxb5 {[#]} 35. Kf1 ({White must play} 35. g3 $1 $16) 35... Nf4 $1 $11 {The position is equal.} 36. Bd4 Nd5 37. a3 a6 38. Ke2 Kf8 39. Kf3 Ke8 40. Ke4 Kd7 41. g4 g6 42. f4 Kc6 43. f5 gxf5+ 44. gxf5 h5 (44... Ne7 { feels hotter.} 45. fxe6 fxe6 46. Bc5 Nf5 47. Bf2 Kb7) 45. fxe6 fxe6 46. Kf3 Ne7 {And now ...Kd5 would win.} 47. Ke4 Nf5 48. Bf2 Ne7 49. Bc5 Nf5 50. Bf2 Ne7 51. Bh4 Nf5 52. Bf2 {Weighted Error Value: White=0.13/Black=0.15} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.19"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "0-1"] [ECO "A00"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "60"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,60,0,6,12,13,10,23,-2,6,-8,1,0,5,-44,46,0,0,0,0,-17,-7,-16,0,-25,0,0, 0,-68,0,0,0,0,-7,-29,0,-2,0,0,0,0,0,0,0,0,0,0,0,0,40,-66,-74,-1339,-1328]} 1. Nc3 c5 2. d3 b6 ({Predecessor:} 2... g6 3. g3 Bg7 4. Bg2 Nc6 5. h4 h5 6. Nh3 Nh6 7. Be3 d6 8. Bd2 Rb8 9. Qc1 Nf5 10. Nf4 Bd7 11. a4 a6 12. Nd1 b5 13. axb5 axb5 {1/2-1/2 (71) Migot,T (2353)-Loy,K (2268) Chess.com INT 2021}) 3. Nf3 Bb7 4. g3 Nf6 5. Bg2 Nc6 6. O-O {A00: Irregular Openings.} g6 7. e4 d6 8. Re1 { White has an edge.} Bg7 9. h3 Nd7 10. Be3 Nde5 11. Qd2 h5 (11... Nxf3+ $15 12. Bxf3 O-O) 12. Nxe5 dxe5 13. h4 Qd7 14. a3 e6 15. Ne2 Nd4 16. b4 O-O 17. bxc5 bxc5 18. Nxd4 (18. Rab1 $11) 18... exd4 ({Black should play} 18... cxd4 $15 19. Bg5 Rac8) 19. Bh6 $11 e5 20. Bxg7 Kxg7 21. Rab1 Qc7 22. f4 Bc8 23. f5 f6 24. Rf1 Rb8 25. Kh2 Rxb1 26. Rxb1 Bd7 27. Bh3 Rb8 28. Rf1 Rb2 {[#] aiming for ... c4.} 29. Qf2 (29. Qc1 $14 Ra2 30. Qb1 Rxa3 31. fxg6) 29... Ba4 $15 30. fxg6 $4 {[%mdl 8192]} (30. Kh1 $17 Rxc2 31. Qf3) 30... Rxc2 {Weighted Error Value: White=0.38/Black=0.16} 0-1 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.20"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1/2-1/2"] [ECO "B00"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "119"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,119,35,42,0,12,1,1,-14,0,-14,-10,-17,-16,-44,-20,-23,-23,-58,-45,-56, -49,-58,-32,-55,-35,-64,-57,-52,-51,-62,-70,-70,-73,-68,-71,-126,-78,-96,-99, -100,-102,-160,-158,-155,-53,-131,-77,-53,-83,-236,-112,-105,0,-127,-94,-83, -49,-454,-459,-674,-191,-279,-181,-121,0,0,0,-44,-52,-116,-116,-123,-8,-88,-59, -68,-68,-210,-206,-171,0,0,0,-8,-8,-8,-8,-8,-8,-119,-8,-8,-8,-8,-8,-8,-8,-8,-8, -8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8,-8]} 1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. d5 Ne5 5. Nxe5 dxe5 6. Bd3 {B00: Queen's Fianchetto Defence, Nimzowitsch Defence.} e6 7. dxe6 Bxe6 {[#]} 8. h3 $146 ({Predecessor:} 8. O-O Bc5 9. Nd2 h6 10. Nf3 Bg4 11. h3 Bh5 12. g4 Nxg4 13. hxg4 Bxg4 14. Kg2 {1-0 (54) Benaddi,M (2129) -Christensen,T (2114) Chess.com INT 2018}) 8... c6 9. Nc3 Bc5 10. Qe2 (10. O-O {is more complex.} a5 11. Qf3 Nd7 12. b3 Bd4 13. Bd2) 10... O-O (10... a5 { keeps more tension.} 11. a4 Nd7 12. Nd1 Bb6 13. Ne3 Nc5) 11. Be3 Bxe3 12. Qxe3 Qc7 13. g4 Rfd8 14. O-O b5 15. Ne2 a6 16. Rfd1 c5 17. c3 c4 18. Bc2 h6 19. Ng3 Nh7 20. f3 Rxd1+ 21. Rxd1 Rd8 22. Kf2 (22. Rd2 $142) 22... Nf8 23. Ke2 Rxd1 24. Kxd1 Ng6 25. Kc1 ({Better is} 25. Nh5) 25... Nf4 $17 26. h4 g6 (26... Ng2 $17 27. Qf2 Nxh4) 27. h5 (27. Ne2 $15) 27... Kg7 (27... Qd8 $142 28. hxg6 fxg6) 28. hxg6 fxg6 29. Qd2 $2 {[#]} (29. Ne2 $17 {was necessary.}) 29... Qd7 (29... Qa7 $19 {is more deadly. Strongly threatening ...Qg1+.} 30. Ne2 Nxe2+ 31. Qxe2 Qg1+ 32. Qd1 Qxd1+ 33. Bxd1 Kf6) 30. Qe3 a5 (30... Qe7 $17 {Threatens to win with .. .Qh4.} 31. Kb1 Qh4) 31. b3 (31. Qc5 $11 Kf6 32. Nf1) 31... cxb3 32. axb3 a4 33. Kb2 {[%mdl 8192]} (33. Qc5 $15 Kf6 34. Qf8+ Kg5 35. bxa4) 33... axb3 $19 34. Bxb3 (34. Bb1 $142 Bc4 35. Nh1) 34... Bc4 $2 (34... Bxb3 35. Kxb3 Qd1+ 36. Ka2 Nd3 37. Qa7+ Kf6 38. Qa6+ Kg5 39. Qxb5 Qc2+ 40. Ka1 Qc1+ 41. Ka2 Qc2+ 42. Ka1 Qxc3+ 43. Kb1 Qc1+ 44. Ka2 Qc2+ 45. Ka3 Qc3+ 46. Qb3 Qc5+ 47. Ka4 Qa7+ 48. Kb5 Qb7+ 49. Kc4 Qf7+ {[%mdl 64] Double Attack} 50. Kc3 Qxf3 {[%mdl 64] Double Attack}) 35. Bc2 (35. Bxc4 $142 bxc4 36. Qb6) 35... Qe7 36. Qb6 Bd3 (36... Ne6 $17 37. Nh1 Ng5) 37. Bb3 $11 Bc4 (37... Kh7 {seems wilder.} 38. Qc6 Qd8 39. Qb7+ Kh8 40. Bd5 Bc4) 38. Bxc4 bxc4 39. Qb5 (39. Nf1 $15) 39... Nd3+ $17 40. Kc2 Qc7 (40... Qf7 $17 {aiming for ...h5.} 41. Qd5 Ne1+ 42. Kd1 Qxf3+ 43. Kxe1 Qxg3+ 44. Kd2 Qf4+ 45. Kc2 h5 46. gxh5 gxh5 47. Qd7+ Qf7) 41. Qd5 (41. Nf1 $11) 41... Ne1+ (41... Kf6 {seems wilder.} 42. Nf1 Qb6 43. Qxc4 Qf2+ 44. Nd2 Ne1+) 42. Kd1 Nxf3 43. Ke2 (43. Nf1 $1 $15) 43... Ng5 44. Nf1 {[#]} Nf7 $2 ({Black should play} 44... Nh3 $1 $19 {[%CAl Rh3f4] Hoping for ...Nf4+.} 45. Qb5 Nf4+ 46. Kd1 Qd6+ 47. Ke1 Kf6) 45. Ne3 $11 Qc8 (45... Kf6 {looks sharper.} 46. Nxc4 Ng5 47. Kd2 Nh3 48. Qg8 Qd7+) 46. Qxc4 (46. Ke1 {is more complex.} h5 47. Nxc4 Qc7 48. gxh5 gxh5 49. Ke2) 46... Qxc4+ 47. Nxc4 {[%mdl 4096] Endgame KN-KN} Kf6 {Threatening ...Kg5.} 48. Kf3 Ke6 49. Ne3 (49. Ke3 $11 {remains equal.}) 49... Nd6 (49... Ng5+ $17 50. Ke2 Nxe4) 50. Nd5 {The position is equal.} Nb5 51. Ke3 Kd6 52. Nf6 Nxc3 53. Ng8 $1 h5 54. gxh5 gxh5 55. Nf6 h4 56. Kf3 Kc5 57. Ng4 Kd4 58. Nxe5 Kxe5 59. Kg4 Nxe4 60. Kxh4 {Weighted Error Value: White=0.43/Black=0. 42} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.21"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "0-1"] [ECO "A03"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "122"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 13,122,10,20,-27,-16,-21,-26,-18,-20,-20,-14,-36,112,111,107,100,126, 122,123,58,79,-19,101,72,139,47,20,-70,45,32,18,-106,-110,-175,-105,-202,-197, -194,-197,-314,-270,-252,-255,-254,-236,-539,-277,-387,-191,-311,-249,-497, -483,-489,-358,-890,-397,-529,-178,-154,-120,-128,-128,-128,-114,-110,-106, -112,-106,-129,-81,-76,-62,-72,-70,-84,-68,-80,0,0,0,0,26,26,26,26,57,55,79,0, 55,49,56,-173,-158,-112,-135,-793,-770,-1429,-1403,-29977,-29981,-29981,-29982, -29984,-29985,-29985,-29986,-29986,-29987]} 1. f4 d5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. d3 c5 (6... Nc6 7. e3 Bf5 8. Nc3 Qc8 9. Qe2 Bh3 10. e4 Bxg2 11. Kxg2 d4 12. Nd1 e6 13. Nf2 Qd7 14. Bd2 Ne8 15. e5 f5 16. exf6 Nxf6 { 1/2-1/2 (42) Harika,D (2492)-Kosteniuk,A (2546) Hengshui 2019}) 7. Qe1 d4 8. c4 {A03: Bird's Opening with 1...d5.} Nc6 9. Na3 Rb8 10. Bd2 {[#] Black has an edge.} Re8 $146 ({Predecessor:} 10... b6 11. b4 cxb4 12. Bxb4 Bb7 13. Nc2 Re8 14. Bd2 Qd7 15. Rb1 Rbd8 16. Rb5 Qc7 {1-0 (36) Shivananda,B (2358)-Akshayraj,K (2472) Nagpur 2012}) 11. Nc2 e5 12. fxe5 Nxe5 (12... Ng4 $15 {stays ahead.}) 13. Nxe5 $16 Rxe5 14. Bf4 Ng4 15. h3 Nh6 16. Bxe5 (16. b4 $16) 16... Bxe5 $14 17. Qf2 (17. g4 $16) 17... Qc7 (17... b5 $1 $11) 18. g4 $16 Be6 ({Black should play} 18... Kg7) 19. Qh4 (19. e3 $16) 19... Kg7 $1 $14 20. Rf3 (20. e3 $11) 20... Rf8 (20... f5 $15) 21. Raf1 f5 22. gxf5 (22. b4 $11 {remains equal.}) 22... Nxf5 $17 23. Qe4 (23. Qe1 $17) 23... Bc8 (23... Re8 $19 24. b4 Bd7 25. Rxf5 Bxf5) 24. Qd5 (24. e3 $17) 24... Rd8 $19 {[%mdl 1024] Black has strong compensation.} 25. Qe4 Re8 26. Qd5 (26. Kh1 {might work better.}) 26... Be6 27. Qe4 Bd7 28. Rxf5 Bxf5 ({Stronger than} 28... Bh2+ 29. Kh1 $11) 29. Qd5 (29. Qf3 {nothing else works.}) 29... b6 30. Na3 Qd7 (30... Bh2+ $142 31. Kh1 Rxe2) 31. Qf3 (31. Qxd7+ {was called for.} Bxd7 32. Kf2) 31... Bb8 {Hoping for ...Re3.} 32. Nb5 $2 (32. Nc2) 32... a6 33. Na3 Qd6 34. Nc2 $2 (34. Rf2) 34... Qh2+ 35. Kf2 {[#]} Qe5 $2 (35... Be4 $1 {[%mdl 512]} 36. dxe4 Rf8) 36. Ke1 Qg3+ 37. Kd1 Qxf3 38. Rxf3 Bc7 39. Rf1 Bd6 40. Ne1 a5 41. Nf3 Bg3 42. Nd2 Re7 43. Ne4 Bc7 44. Nd2 h6 (44... Bd7 {keeps more tension.} 45. a3 Re5 46. Rh1 Rh5 47. Ne4 Ba4+ ) 45. Ne4 Bxe4 (45... Rf7 $17) 46. Bxe4 $17 {[%mdl 4096] Endgame KRB-KRB} g5 47. Kc2 Bf4 48. Kb3 Kf6 49. Ka4 Re6 50. Kb5 Ke5 51. Rf3 (51. a3 $16) 51... Rf6 (51... h5 $11) 52. a3 h5 53. b4 $2 (53. Rf1 $14 {keeps the upper hand.}) 53... axb4 54. axb4 cxb4 {[#] Threatens to win with ...b3.} 55. Kxb4 {[%mdl 8192]} ( 55. Rf1 $17) 55... g4 $19 56. hxg4 hxg4 57. Rxf4 Kxf4 {KR-KB. Black mates.} 58. Kb5 Ke3 59. c5 bxc5 60. Kxc5 g3 61. Kd5 Rf2 {Weighted Error Value: White=0.85/ Black=0.52} 0-1 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.22"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1/2-1/2"] [ECO "B00"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "109"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,109,32,64,29,45,33,34,23,44,0,0,0,0,-12,0,-22,0,-9,-12,-20,-4,-10,-16, -31,0,0,0,0,0,-19,-15,-25,0,0,30,30,34,34,35,47,43,-77,-81,-120,-111,-155,-80, -89,-67,-135,-170,-159,-151,-137,-77,-262,-169,-156,-156,-210,-76,-102,-75,-84, -84,-149,-157,-235,-233,-241,-219,-233,-197,-200,-104,-190,0,-217,-86,-84,13, 13,12,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0]} 1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Bd3 g6 5. d5 Nb8 6. Nc3 {B00: Queen's Fianchetto Defence, Nimzowitsch Defence.} Bg7 7. h3 O-O 8. Bg5 {[#] White is slightly better.} c6 $146 ({Predecessor:} 8... Nbd7 9. Qd2 b6 10. O-O-O Nc5 11. Rhe1 a5 12. Bb5 Bb7 13. Nd4 e6 14. Nc6 Bxc6 15. Bxc6 {1-0 (24) Quiros Garcia,L (1449)-Benages Mabres,V Barcelona 2019} ) 9. dxc6 Nxc6 10. O-O Be6 11. Qd2 Rc8 12. Bh6 a6 13. Bxg7 Kxg7 14. Rfe1 Qa5 15. a3 Ne5 16. Nxe5 Qxe5 (16... dxe5 {with more complications.} 17. b4 Qb6 18. Na4 Qc6 19. Nc5 Nd7) 17. f4 Qc5+ 18. Qf2 (18. Kh2 {keeps more tension.} Qb6 19. Na4 Qd4 20. Nc3 h6 21. Rad1) 18... b5 19. Ne2 (19. Re3 {feels hotter.} Bc4 20. Bxc4 bxc4 21. Rd1 Rfd8 22. Re2) 19... Qxf2+ 20. Kxf2 Rc5 21. Nd4 Rfc8 22. a4 Bc4 23. axb5 axb5 24. b4 R5c7 25. e5 (25. g4 $14) 25... dxe5 $17 26. fxe5 Nd5 27. Rab1 Bxd3 (27... Nc3 $142 28. Ra1 Rd7) 28. cxd3 Nf4 29. Red1 (29. Re4 $15 Nxd3+ 30. Ke3) 29... Rd7 30. Nxb5 Rc2+ ({Don't take} 30... Nxd3+ 31. Ke3 $17) ( {But not} 30... Rxd3 31. Rxd3 Nxd3+ 32. Ke2 $17) 31. Kf3 Nxd3 (31... Nxg2 $142 {Strongly threatening ...Nh4+.} 32. d4 Nh4+ 33. Ke3 Rh2) 32. Ke3 $2 {[#]} (32. e6 $17 fxe6 33. Na3 Ne5+ 34. Kf4 Rxd1 35. Rxd1) 32... Nxe5 33. Rxd7 Nxd7 $19 { [%mdl 4096] Endgame KRN-KRN} 34. g4 (34. g3 $17) 34... e5 (34... Rh2 $19 35. Nd4 Rxh3+ 36. Kf2 e5) 35. Nd6 Rc6 36. Ne4 f5 37. gxf5 ({White should play} 37. b5 Rc4 38. gxf5) 37... gxf5 $17 38. Nd2 (38. Rg1+ $17 {was necessary.} Rg6 39. Rxg6+ hxg6 40. Ng5) 38... Rc3+ $19 39. Ke2 Rxh3 40. Nc4 Kf6 41. b5 Rh2+ ({ Better is} 41... Nc5 $19 {Hoping for ...Rh2+.} 42. b6 Nb7) 42. Ke3 (42. Kd3 $17 {is a better defense.}) 42... Rh3+ $2 (42... Rh4 $19 43. Kd3 h5) 43. Kf2 $2 ( 43. Ke2 $1 $11 {and White stays safe.}) 43... f4 (43... Rc3 $19 {and Black stays clearly on top.} 44. Rb4 Nc5) 44. b6 $17 Nxb6 45. Rxb6+ {KRN-KR. The position is equal.} Kf5 46. Nd6+ Kg4 {[#] aiming for ...Rh6.} 47. Ne4 Re3 48. Nf6+ Kf5 49. Nxh7 e4 50. Rf6+ Ke5 51. Rf8 Rf3+ 52. Ke2 Re3+ 53. Kf2 Rf3+ 54. Ke2 Re3+ 55. Kf2 {Black had all chances to win. Weighted Error Value: White=0. 34/Black=0.29} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.23"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1-0"] [ECO "A05"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "173"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 14,173,19,23,16,12,35,39,52,32,37,20,37,-12,117,0,7,0,0,-7,0,0,0,0,50,0, 0,-53,-39,-36,13,16,41,40,76,114,110,106,118,56,90,96,73,55,60,27,32,0,116,51, 19,51,49,34,52,0,244,74,124,131,124,114,164,174,179,160,218,201,403,173,167, 152,188,185,194,147,218,213,224,219,218,217,204,179,168,159,179,179,216,200, 259,260,234,144,153,132,128,14,14,11,11,-166,-166,-166,-161,-158,-150,-167,-22, -154,-155,-586,-569,-372,273,237,478,467,520,495,823,309,827,785,789,0,0,0,819, 816,793,769,706,710,1064,1045,29981,29982,29982,29983,29983,29984,29984,29985, 29985,29985,29985,29986,29986,29987,29987,29988,29988,29987,29987,29988,29987, 29988,29993,29990,29990,29991]} 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. d3 Be7 6. e4 d5 7. Nbd2 dxe4 (7... c5 8. e5 Nfd7 9. Re1 Nc6 10. h4 Qc7 11. Qe2 h6 12. h5 Nb4 13. Nf1 c4 14. d4 c3 15. Ne3 Ba6 16. Qd1 cxb2 17. Bxb2 Rc8 18. Qd2 b5 19. a4 Nb6 {0-1 (59) Harika,D (2511)-Kosteniuk,A (2554) Huaian 2016}) 8. dxe4 $1 {The main line 8.dxe4 scores better than 8.Ng5.} O-O {A05: Réti Opening: 1 Nf3 Nf6.} 9. Qe2 c5 10. e5 Nfd7 {White is slightly better.} 11. Ne4 Nc6 12. Bf4 Qc7 {[%CAl Rd7e5] [#]} 13. Rfd1 $146 (13. Nf6+ $5 Bxf6 14. exf6 $14 ) ({Predecessor:} 13. Nf6+ gxf6 14. exf6 Bd6 15. Bxd6 Qxd6 16. Rfd1 Qc7 17. Rxd7 Qxd7 18. Ng5 Nd4 19. Qh5 Ne2+ 20. Kf1 Bxg2+ 21. Ke1 Be4 22. Qh6 {1-0 (22) Hillarp Persson,T (2509)-Taylor,A (2265) Helsingor 2017}) 13... Rad8 {[#]} ( 13... Ncxe5 $11 14. Nc3 Nxf3+ 15. Bxf3 Qc8) 14. Nd6 (14. Nf6+ $1 $16 {[%mdl 512]} Bxf6 15. exf6) 14... Bxd6 $11 15. exd6 Qc8 16. Bg5 Rde8 17. c3 h6 18. Be3 Ba6 19. Qc2 Bb7 20. Bf4 (20. Qd2 $11) 20... e5 21. Be3 e4 22. Nh4 Nce5 23. Nf5 Nf6 24. Ne7+ Rxe7 25. dxe7 Re8 26. Rd8 ({Better is} 26. Qa4 $16) 26... Rxd8 $14 27. exd8=Q+ Qxd8 28. Rd1 Qc8 29. Qd2 {Qd8+ is the strong threat.} Qf5 30. h3 Nd5 (30... Nf3+ $11 31. Bxf3 exf3 32. Qd8+ Kh7) 31. b3 (31. Bf4 $16) 31... Nf3+ 32. Bxf3 Qxf3 33. Re1 Qf5 34. c4 (34. g4 $14 Qf3 35. Kh2) 34... Nf6 $2 ({ But not} 34... Nxe3 $2 35. Qd8+ Kh7 36. Rxe3 $18) (34... Nb4 $1 $11) 35. Kh2 $2 (35. g4 $18 {and White stays clearly on top.} Qe6 36. Qd8+ Kh7 37. Qb8) 35... Bc8 36. Qd8+ Kh7 37. g4 Qe5+ 38. Kg1 Be6 {intending ...h5.} 39. Rd1 Qb2 (39... b5 $16 {was worth a try.} 40. Qd6 (40. cxb5 Nd5 $14) 40... Qb2) 40. Qd2 $18 Qe5 (40... Qxd2 {was called for.} 41. Rxd2 (41. Bxd2 h5 $16) 41... Nd7) 41. Qd6 ( 41. Bf4 $142 e3 42. Bxe5 exd2 43. Rxd2) 41... Qb2 {[#]} 42. Rd2 $1 {[%CAl Rd2b2]} Qb1+ 43. Kh2 Qa1 44. Qf4 Qf1 (44... g5 $16 45. Qg3 Nd7) 45. Qg3 Qe1 46. Qg1 Qxg1+ 47. Kxg1 {[%mdl 4096] Endgame KRB-KBN} Nd7 48. a3 Kg6 49. Kh2 Kf6 50. Kg3 Ke7 51. Bf4 f6 52. Bd6+ Ke8 53. b4 Bxc4 54. bxc5 bxc5 55. Rc2 (55. Kf4 $16) 55... Bd3 $11 56. Rb2 {With the idea Rb7.} c4 57. Kf4 $2 (57. Rb7 $11 {and White has nothing to worry.}) 57... c3 $19 58. Ra2 c2 59. Ra1 Nb6 {aiming for . ..Nd5+.} 60. Bc5 Kd7 ({Black should play} 60... Nd5+ $19 61. Kg3 a6) 61. Be3 ( 61. Ke3 $11) 61... Kc6 {Hoping for ...Nd5+.} 62. Kf5 $2 (62. Bxb6 $17 Kxb6 63. Ke3) 62... Nd5 63. Kg6 Nc3 $4 {[%mdl 8192]} (63... Nxe3 $19 {and all is fine.} 64. fxe3 Kd5 65. Kxg7 Kc4 66. Kxf6 Kc3) 64. Kxg7 $18 Nb1 $2 (64... Kb5 { keeps fighting.} 65. h4 (65. Kxh6 Kc4 $18) (65. Kxf6 Nd5+ 66. Kg6 Kc4 $18) 65... Ka4 66. Bxh6 (66. Kxh6 Be2 $18) (66. Kxf6 Be2 $18) 66... Nd1) 65. Kxh6 Kd5 66. h4 Kc4 (66... Be2 $142 67. Kg6 Bxg4) 67. Kg7 $2 (67. h5) 67... Kb3 $2 ( 67... Be2 68. Kxf6 Bxg4) 68. h5 Kb2 69. Bd4+ Kb3 70. Be3 Kb2 {[#] Black is now going downhill.} 71. h6 $1 {[%mdl 512]} Kxa1 72. h7 Nc3 73. h8=Q Kb2 74. Qb8+ Nb5 75. a4 {[%mdl 64] Pin. White mates.} a6 76. axb5 axb5 77. Qc7 Bc4 78. Kxf6 c1=Q 79. Bxc1+ Kxc1 80. g5 Kc2 81. Qf4 Kc3 82. g6 b4 83. g7 b3 84. Qe3+ Kc2 85. Qxe4+ {[%mdl 64] Double Attack} Bd3 86. Qxd3+ {[%mdl 64] Promotion} Kxd3 87. g8=Q {Weighted Error Value: White=0.37/Black=0.36} 1-0 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.24"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1/2-1/2"] [ECO "A05"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "135"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 10,135,6,-18,-25,-16,-15,-21,-17,-20,-34,-34,0,-7,0,-33,-33,-155,-158, -168,-160,-177,144,-175,-113,-95,-70,-112,-82,-89,-87,-93,-41,-78,-17,-104,-83, -165,-172,-194,-122,-108,-27,-147,-156,-264,-255,-257,-266,-270,-269,-252,-244, -502,-97,-97,-97,-97,-97,-97,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-68,-86, -61,-71,-61,-86,-61,-61,-61,-62,-61,-61,0,-61,0,-61,-61,-62,-61,-62,-25,-61,0, 0,0,0,0,0,0,-27,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]} 1. Nc3 c5 2. g3 Nc6 3. Bg2 Nf6 4. d3 g6 5. Nf3 Bg7 6. O-O d5 {A05: Réti Opening: 1 Nf3 Nf6.} 7. e4 d4 8. Nb1 e5 9. a4 O-O 10. Na3 h6 11. Nc4 Qc7 {[#]} 12. h3 $146 ({Predecessor:} 12. Bd2 b6 13. b3 Ne8 14. Nh4 Nd6 15. Nxd6 Qxd6 16. f4 exf4 17. Bxf4 Ne5 18. Nf3 {1-0 (37) Zhukov,M (2090)-Gokerkan,C (2470) Chess. com INT 2021}) 12... Be6 13. Kh2 (13. b3 $15) 13... Bxc4 $17 14. dxc4 Nxe4 15. Nxd4 {[#] Threatens to win with Nb5.} Nxf2 $2 {[#]} 16. Rxf2 {[%mdl 8192]} (16. Nb5 $1 $16 {[%CAl Rb5c7]} Nxd1 17. Nxc7) 16... exd4 ({Don't do} 16... Nxd4 17. Bd5 $17) (16... cxd4 $19 17. a5 Nxa5) 17. Bf4 Qd7 18. Bd5 Ne7 {[%CAl Bc6e7, Be7f5,Bf5e3][%mdl 32]} 19. Bg2 Rae8 20. Qf3 b6 (20... Nf5 $17 21. Qxb7 Qxb7 22. Bxb7 Be5) 21. a5 b5 (21... Nf5 $17 22. axb6 axb6) 22. Qb3 (22. Qb7 $11 { remains equal.} Qxb7 23. Bxb7) 22... b4 23. Qf3 {[#]} (23. h4 $17) 23... Nf5 $1 $19 24. a6 Re6 (24... Be5 $19 25. Ra5 Qd6) 25. Qb7 $17 Re7 (25... Rd8 $17 { And now ...Be5 would win.} 26. Qxd7 Rxd7) 26. Raf1 (26. Qxd7 $11 Rxd7 27. Ra5) 26... Ne3 27. Re1 (27. Bxe3 $17 {keeps fighting.} dxe3 28. Qxd7 Rxd7 29. Re2) 27... Qe6 $19 28. Qf3 {[#]} Ng4+ $1 {[%mdl 576] Discovered Attack} 29. hxg4 Qxe1 30. Bd6 Re3 31. Qf4 (31. Rf1 Rxf3 32. Rxe1) 31... Re2 $2 (31... Be5 $19 32. Bxe5 Rxe5) 32. Rxe2 $17 Qxe2 {[%mdl 64] Double Attack} 33. Bxf8 Bxf8 34. Qe4 Qxe4 (34... Qf2 {keeps more tension.} 35. Kh3 Bd6 36. Qd3 Be5 37. Bd5 Qf6) 35. Bxe4 {[%mdl 4096] Endgame KB-KB} Kg7 36. Kg2 Kf6 37. Kf3 Ke5 38. Bd5 f5 39. gxf5 gxf5 40. b3 Be7 41. Bc6 Bg5 42. Bd7 f4 43. gxf4+ Bxf4 44. Bc8 Be3 45. Bg4 Kf6 (45... Bg5 $15) 46. Bc8 (46. Ke4 $11) 46... Ke5 47. Bg4 Bg5 48. Bc8 Be7 49. Bg4 Kf6 50. Bc8 h5 ({Better is} 50... d3 $15 51. cxd3 Ke5) 51. Ke4 $1 $11 Bd8 52. Kd5 Bb6 53. Ke4 Kg5 54. Kf3 h4 55. Bd7 {The position is equal.} Kf6 56. Kg4 Ke5 57. Kxh4 d3 58. cxd3 Kd4 59. Ba4 Kxd3 60. Kg5 Kd4 61. Kf6 Kd3 62. Ke6 Kd4 63. Kd7 Kd3 64. Kc6 Kd4 65. Kb7 Kd3 66. Kc6 Kd4 67. Kb7 Kd3 68. Kc6 {And White is the lucky defender. Weighted Error Value: White=0.34/Black=0.41} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.25"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "1/2-1/2"] [ECO "B00"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "125"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,125,25,17,19,13,0,0,-6,35,24,33,22,29,21,31,0,14,0,16,-51,-50,-35,-53, -85,-43,-47,-23,-31,-23,-31,-24,-27,0,-26,0,0,9,0,0,0,91,-15,91,-19,91,-48,-18, 0,0,-23,-23,-23,-23,-47,0,-47,0,-47,-47,-47,-47,-47,0,-47,0,-47,0,-30,0,-47,0, -47,0,-47,0,-47,0,-47,0,-40,0,-40,0,-40,0,-37,-37,-37,-14,-20,-5,-83,-76,-120, -32,-62,-32,-67,-57,-1068,-317,-324,-304,-487,-457,-469,-337,-421,0,-78,0,-391, 0,-69,-3,-110,0,-72]} 1. e4 e6 2. d4 b6 3. Bd3 Bb7 4. Nd2 Nf6 5. Qe2 d5 6. e5 { B00: Queen's Fianchetto Defence, Nimzowitsch Defence.} Nfd7 7. f4 c5 8. c3 {[#] } g6 $146 ({Predecessor:} 8... Nc6 9. Ngf3 Be7 10. O-O a6 11. g4 b5 12. f5 b4 13. g5 Bxg5 14. Nxg5 Qxg5+ {1-0 (29) Baskakov,E (1963)-Vityugova,Y (1396) Nizhnij Novgorod 2015}) 9. Ngf3 Qc8 10. h4 h5 11. Ng5 Ba6 12. Ndf3 Bxd3 13. Qxd3 Qa6 14. Ke2 ({White should try} 14. Qb1 $11 Rg8 15. Kf2) 14... Qxd3+ $15 15. Kxd3 Nc6 16. a3 Be7 17. b4 c4+ 18. Kc2 Kf8 19. Bd2 Kg7 20. a4 Nf8 21. Bc1 ( 21. Nh2 {seems wilder.} Bd8 22. Nf1 Nd7 23. Ne3 Rb8 24. g3) 21... Bxg5 22. fxg5 Ne7 23. b5 Nf5 24. a5 Nd7 (24... bxa5 $11 25. Rxa5 Nd7) 25. Bf4 (25. a6 $1 $16) 25... Rhb8 (25... a6 $11 {remains equal.}) 26. Rhb1 (26. a6 $16) 26... Rb7 ( 26... a6 $11 {keeps the balance.}) 27. axb6 ({White must play} 27. a6 $16 Rbb8 28. Rf1) 27... Rxb6 28. Ra5 Rb7 29. Rba1 Nb6 30. g3 Nc8 31. Nd2 Nce7 32. Nb1 Nc8 33. Na3 Rab8 34. Kd2 Kg8 35. Ra6 Kg7 36. Rb1 Kg8 37. Ra5 Kg7 38. Nc2 Kg8 39. Na3 Kg7 40. Ke2 Kg8 41. Kf3 Kg7 42. Rb4 Kg8 43. Rba4 Kg7 (43... Nb6 $5 44. Rb4 $8 Na8 $11) 44. Rb4 Kg8 45. Rb1 Kg7 46. Rh1 Nce7 47. g4 hxg4+ 48. Kxg4 Rh8 49. Ra6 Nc8 50. Rc6 (50. h5 $11) 50... Nb6 $17 51. Bd2 Na4 (51... Na8 $17 52. Ra6 Nc7) 52. Ra6 Nb2 53. Ra5 Nd3 {Threatens to win with ...Nf2+.} 54. Nc2 $2 { [%mdl 8192]} (54. Rh2 $15) 54... Rhb8 $2 (54... Nf2+ 55. Kf4 Nxh1) 55. Rb1 $19 Nf2+ 56. Kf3 $2 (56. Kf4 {was the only chance.}) 56... Ne4 57. Be1 Rh8 58. Kg4 {[#]} Rhb8 $2 ({Better is} 58... Nxc3 $1 $19 {[%mdl 512]} 59. Rb4 (59. Rb2 Ne2) 59... Ne2) 59. Rb2 (59. Kf3 $11) 59... Rh8 (59... a6 $17 {[%CAl Ra6b5]} 60. Rxa6 Rxb5) 60. Rba2 $2 {[%mdl 8192] [#]} (60. Rb1 $1 $11 {and White is okay.} Nxc3 61. Rb2) 60... Rhb8 $2 (60... Nxc3 $1 $19 {[%mdl 512]} 61. Rxa7 Rxa7 62. Rxa7 Nxb5 {[%mdl 64] Double Attack}) 61. Rb2 $15 Ra8 (61... Rb6 $15 62. Rxa7 Rxb5) 62. Rb4 (62. Na3 $11) 62... Rab8 {aiming for ...Rh8.} 63. Rb2 $1 { Weighted Error Value: White=0.57/Black=0.57} 1/2-1/2 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.26"] [White "Harika, Dronavalli"] [Black "Kosteniuk, Alexandra"] [Result "1-0"] [ECO "A06"] [WhiteElo "2422"] [BlackElo "2521"] [Annotator "TA"] [PlyCount "134"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 11,134,19,24,26,27,25,25,22,16,5,26,0,30,30,36,-27,34,-29,10,28,40,31, 42,0,0,0,12,-5,0,-28,-12,-29,10,-14,22,16,44,52,52,46,50,80,95,91,139,0,123,47, 53,11,36,-10,38,0,15,-64,-48,-25,20,-56,-33,-112,-3,-89,-81,-75,-54,-78,-83, -82,-79,-108,-76,-63,-39,-29,-22,-16,120,122,130,125,116,104,182,189,180,174, 252,202,187,202,200,200,189,189,197,185,195,191,204,185,185,185,204,187,204, 204,218,211,229,204,204,204,204,204,222,203,206,189,197,189,203,197,189]} 1. b3 Nf6 2. Bb2 d5 3. e3 c5 4. Nf3 Nc6 5. Bb5 Bd7 6. O-O e6 7. d4 {A06: Réti Opening: 1 Nf3 d5.} Bd6 8. dxc5 Bxc5 {[#]} 9. a3 $146 {White has an edge.} ({ Predecessor:} 9. c4 O-O 10. cxd5 Nxd5 11. Nbd2 Qe7 12. a3 a6 13. Bd3 Rac8 14. b4 Ba7 15. Rc1 {0-1 (50) Ruiz Bernal,I (2068)-Moyseenko,T ICCF email 2011}) 9... O-O 10. b4 Bb6 11. Nbd2 a6 12. Bd3 Bc7 13. Qe2 (13. c4 $14) 13... h6 ( 13... e5 $11 14. e4 d4) 14. h3 (14. c4 $14) 14... b5 (14... e5 $5 {[%CAl Re5e4] } 15. e4 d4 $11) 15. e4 Bc8 16. Rad1 Bb7 17. e5 Nd7 18. Nb3 Rc8 19. Rde1 Qe7 20. Kh1 Rfd8 21. Rd1 Bb6 22. Qd2 Nf8 23. Qf4 Ng6 24. Qg4 Nf8 25. Rde1 Rd7 26. Bc1 Kh8 27. Qh5 Nh7 {[#]} 28. Qg4 (28. Nh4 $1 $16) 28... Rcd8 (28... Nf8 $11) 29. Nh2 (29. Bxh7 $16 Kxh7 30. Be3 Bxe3 31. Rxe3) 29... Qf8 30. Qe2 Ne7 31. Ng4 Ng6 32. Nh2 d4 33. Be4 (33. Qg4 $11) 33... Bxe4 $15 34. Qxe4 d3 35. cxd3 (35. Qc6 $11 Ba7 36. cxd3) 35... Rxd3 36. Na5 (36. Qc6 $15) 36... R3d4 (36... R8d5 $17 {Hoping for ...Bxa5.} 37. Nf3 Qe7) 37. Qe2 (37. Qb7 $11 Bxa5 38. bxa5) 37... Bxa5 $17 38. bxa5 R4d5 39. Nf3 Qc5 40. Qe4 Qc4 41. h4 Qxe4 42. Rxe4 Ne7 43. Kh2 Nc6 44. Be3 Nxa5 (44... Rd1 $11 45. Rxd1 Rxd1) 45. Bb6 $1 $16 {[%csl Ba5,Bd8][%mdl 64] [#] Double Attack. Black is on the road to losing.} Nc4 46. Bxd8 Rxd8 47. Rc1 Nxa3 (47... g5 $16 {was called for.} 48. a4 Kg7) 48. Rc7 $18 Kg8 49. Rf4 $36 {[%mdl 2048] Black is under strong pressure.} f6 (49... Rf8 $142 50. Ra7 g5 51. hxg5 (51. Rxa6 gxf4 52. Rxa3 Rb8 $17) 51... Nxg5) 50. Rg4 g5 {White is clearly better.} 51. hxg5 fxg5 52. Ra7 Nc4 53. Rxa6 Kf7 54. Rd4 Rxd4 55. Nxd4 Nxe5 {[%mdl 4096] Endgame KRN-KNN} 56. Ra7+ Kg6 57. Nxe6 Nf6 58. Nd4 Neg4+ 59. Kg1 Ne5 60. Rb7 h5 61. Nxb5 Nd3 62. Nd6 Nf4 63. Rb6 Kg7 64. Nf5+ Kf7 65. Ne3 Ne6 66. Rb5 h4 67. Kh2 Kg6 {Weighted Error Value: White=0.26/ Black=0.30} 1-0 [Event "FIDE Chesscom Womens Speed 2021"] [Site "Online"] [Date "2021.06.16"] [Round "1.27"] [White "Kosteniuk, Alexandra"] [Black "Harika, Dronavalli"] [Result "0-1"] [ECO "B00"] [WhiteElo "2521"] [BlackElo "2422"] [Annotator "TA"] [PlyCount "90"] [EventDate "2021.05.25"] [EventType "k.o."] [SourceTitle "playchess.com"] [Source "ChessBase"] [SourceQuality "1"] {[%evp 9,90,-47,-31,-47,-37,-52,9,-23,15,0,26,10,55,10,64,9,23,0,14,0,7,7,12, -19,-21,-28,-20,-59,-59,-60,0,9,30,-65,-22,-47,-25,-22,0,-140,-88,-105,-83, -141,-138,-136,-54,-140,-127,-140,-128,-74,-73,-72,-81,-142,-109,-227,-228, -533,-532,-508,-312,-312,-302,-264,-256,-397,-88,-200,-183,-152,0,-129,0,-183, 0,-219,0,-29990,-29991,-29991,-29992]} 1. e4 b6 2. d4 Bb7 3. d5 g6 4. Be3 Bg7 5. Bd4 {[#]} Nf6 $146 ({Predecessor:} 5... f6 6. Nc3 c5 7. dxc6 Nxc6 8. Nf3 e6 9. e5 f5 10. Be2 Nge7 11. Nb5 O-O {0-1 (66) Mohammadi,S (959)-Hildebrand,G (1696) Hofheim 2014}) 6. Nc3 {B00: Queen's Fianchetto Defence, Nimzowitsch Defence.} O-O 7. Nf3 c5 (7... c6 $15) 8. Be3 {The position is equal.} (8. Bxf6 $5 Bxf6 9. Bc4 $11) 8... d6 9. h4 h5 10. Be2 a6 11. Ng5 Bc8 (11... b5 $11) 12. f3 ({White should play} 12. a4 $1 $14) 12... b5 $11 {[%CAl Bb6b5,Bb5b4][%mdl 32]} 13. a4 b4 14. Nb1 a5 15. Nd2 Nbd7 16. Nc4 Nb6 17. Nxb6 Qxb6 18. g4 Ba6 19. Rg1 Bxe2 (19... hxg4 $15 20. fxg4 Nd7) 20. Qxe2 Qa6 21. Qd2 (21. Qxa6 $11 Rxa6 22. gxh5 Nxh5 23. O-O-O) 21... Rac8 (21... Nd7 {with more complications.} 22. Rb1 hxg4 23. fxg4 b3 24. c3 Qc4) 22. Qe2 Qxe2+ 23. Kxe2 Rb8 24. b3 (24. Rab1 $11) 24... Rfc8 (24... hxg4 $142 25. Rab1 gxf3+ 26. Kd3 f2 27. Bxf2 Nd7) 25. Rac1 c4 26. Bd4 ({White should try} 26. gxh5 Nxh5 27. f4) 26... hxg4 $17 27. fxg4 Nd7 (27... Bh6 $17 28. Kf3 Nd7) 28. Bxg7 (28. Nf3 $1 $15) 28... Kxg7 29. Nf3 Rc7 30. Nd4 Ne5 31. h5 Rbc8 32. hxg6 (32. Rcf1 $142) 32... Kxg6 {[#] ... cxb3 is the strong threat.} 33. Nb5 (33. Rcf1 $17) 33... Rc5 $19 {Threatens to win with ...cxb3.} 34. Nd4 (34. Na7 {is more resistant.} Rh8 35. Rh1 Rxh1 36. Rxh1) 34... cxb3 35. Nxb3 Rc3 36. Nxa5 Rxc2+ 37. Rxc2 Rxc2+ {[%mdl 4096] Endgame KRN-KRN} 38. Ke3 (38. Kd1 {was the only chance.} Ra2 39. Rg3) 38... Ra2 $2 (38... b3 $19 {aiming for ...Kg5.} 39. Nc6 Nc4+ 40. Kd3 Nb2+ {[%mdl 64] Double Attack} 41. Ke3 Nxa4) 39. Nc6 (39. Rb1 $17 {only move.}) 39... Ra3+ ({ Much less strong is} 39... Rxa4 40. Nxe7+ Kg5 41. Rb1 $17) 40. Ke2 Ra2+ 41. Ke3 Ra3+ (41... b3 $17 42. Nxe5+ dxe5) 42. Kf2 $2 (42. Ke2 $11 {and White is okay.} ) 42... Ra2+ $2 ({Better is} 42... Kg5 $19 {White must now prevent ...Kf4.} 43. Rb1 Rxa4) 43. Kg3 $2 (43. Ke3 $11) 43... Ra3+ $2 (43... Rxa4 $19 {And now ... Kg5 would win.} 44. Kf4 b3) 44. Kh4 $2 {[%mdl 8192] [#]} (44. Kf2 $11) 44... Nf3+ {[%mdl 64] Double Attack} 45. Kg3 Nxg1+ {Weighted Error Value: White=0.76/ Black=0.55} 0-1