[Event "GM Konstantin Sakaev School"] [Site "https://lichess.org/EqeDZhLq"] [Date "2020.06.27"] [White "ZhenkaZheleznii"] [Black "Chorusferam2"] [Result "0-1"] [UTCDate "2020.06.27"] [UTCTime "09:05:48"] [WhiteElo "2179"] [BlackElo "2279"] [WhiteRatingDiff "-4"] [BlackRatingDiff "+5"] [Variant "Standard"] [TimeControl "180+2"] [ECO "D77"] [Opening "Neo-Grünfeld Defense: Classical Variation, Polgar Variation"] [Termination "Normal"] [Annotator "lichess.org"] 1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. d4 d5 6. c4 Nc6 { D77 Neo-Grünfeld Defense: Classical Variation, Polgar Variation } 7. Nc3?! { (0.40 → -0.20) Inaccuracy. Na3 was best. } (7. Na3 a5 8. cxd5 Nxd5 9. Nb5 Bg4 10. h3 Bxf3 11. Bxf3 Nb6) 7... dxc4 8. e4 Bg4 9. e5 Nd7 10. h3 Bxf3 11. Bxf3 Nb6 12. Be3 e6 13. Bxc6 bxc6 14. Qf3 Nd5 15. Qe2?! { (0.00 → -0.63) Inaccuracy. Ne4 was best. } (15. Ne4 Rb8 16. Qe2 Nxe3 17. fxe3 Qd5 18. Nc3 Qa5 19. Ne4) 15... Nxc3 16. bxc3 Qd5 17. Rab1 Rab8?! { (-1.21 → -0.33) Inaccuracy. Rfb8 was best. } (17... Rfb8) 18. Qc2?! { (-0.33 → -1.37) Inaccuracy. Rb4 was best. } (18. Rb4 Rxb4 19. cxb4 Rb8 20. a3 a5 21. bxa5 Bf8 22. a4 Rb4 23. Qc2 Qxa5 24. Ra1 c3) 18... Rb5 19. a4 Rb3?! { (-1.90 → -1.22) Inaccuracy. Rb6 was best. } (19... Rb6 20. f4 f5 21. exf6 Bxf6 22. Kh2 Rfb8 23. Rxb6 Rxb6 24. Re1 Rb3 25. Bd2 c5 26. dxc5) 20. Rxb3 cxb3 21. c4 bxc2 22. cxd5 cxd5 23. Rc1 c5 24. dxc5 Bxe5 25. Rxc2 Rc8 26. f4 Bf6 27. c6 a6 28. Bb6 Be7 29. a5 Bd6 30. Kf2 Kf8 31. Ke3 Ke7 32. Kd4 f6 33. Rc1 Bc7?? { (-1.09 → 5.42) Blunder. g5 was best. } (33... g5 34. Ke3) 34. Bxc7 Rxc7 35. Kc5 Rc8? { (3.96 → 7.45) Mistake. Kd8 was best. } (35... Kd8 36. Rb1) 36. Kb6 Kd6 37. c7 e5 38. fxe5+ fxe5 39. Kb7 Kd7 40. Rc6 Rg8 41. c8=Q+ Rxc8 42. Rxc8 e4 43. Rc7+ Kd6 44. Rc6+ Ke5 45. Kxa6 e3 46. Rc1?? { (16.32 → 0.47) Blunder. Kb5 was best. } (46. Kb5) 46... d4 47. Kb7? { (1.24 → 0.00) Mistake. Re1 was best. } (47. Re1 Ke4) 47... d3 48. a6 d2 49. Rb1?? { (0.00 → -18.09) Blunder. Ra1 was best. } (49. Ra1 e2 50. a7 d1=Q 51. a8=Q Qd5+ 52. Kb6 Qb3+ 53. Ka7 Qe3+ 54. Kb7 Qb3+) 49... e2 50. a7 d1=Q 51. Rxd1? { (-8.97 → Mate in 25) Checkmate is now unavoidable. Rb5+ was best. } (51. Rb5+ Kd6) 51... exd1=Q 52. a8=Q Qd5+ 53. Kb8 Qxa8+ 54. Kxa8 Ke4 55. Kb7 Kf3 56. g4 Kg3?! { (Mate in 23 → -73.77) Lost forced checkmate sequence. g5 was best. } { White resigns. } (56... g5 57. Kc6 Kg3 58. Kc5 Kxh3 59. Kd4 Kxg4 60. Ke4 Kh3 61. Kf5 g4 62. Kg5 g3 63. Kh6) 0-1