Event: Open
Site: Warsaw, Poland
Date: 2021-12-29
White: Costachi, Mihnea
WhiteElo: 2482
Black: Karjakin, Sergey
BlackElo: 2657
Result: 0-1
ECO: E15
Opening: Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation
Variant: Standard

1. d4 { [%eval 0.3] [%clk 0:03:03] } 1... Nf6 { [%eval 0.22] [%clk 0:03:03] } 2. c4 { [%eval 0.28] [%clk 0:03:04] } 2... e6 { [%eval 0.28] [%clk 0:03:04] } 3. Nf3 { [%eval 0.0] [%clk 0:03:04] } 3... b6 { [%eval 0.29] [%clk 0:03:06] } 4. g3 { [%eval 0.18] [%clk 0:03:05] } 4... Ba6 { [%eval 0.19] [%clk 0:03:07] } 5. Qc2 { [%eval 0.0] [%clk 0:03:05] } 5... Bb4+?! { [%eval 0.85] } { Inaccuracy. c5 was best. } { [%clk 0:02:59] } 6. Bd2 { [%eval 0.46] [%clk 0:03:06] } 6... Be7?! { [%eval 1.08] } { Inaccuracy. c5 was best. } { [%clk 0:03:00] } 7. Bg2 { [%eval 0.67] [%clk 0:03:06] } 7... d5 { [%eval 0.69] [%clk 0:02:45] } 8. cxd5 { [%eval 1.21] [%clk 0:02:52] } 8... exd5 { [%eval 1.12] [%clk 0:02:46] } 9. Nc3 { [%eval 1.16] [%clk 0:02:53] } 9... O-O { [%eval 1.07] [%clk 0:02:45] } 10. O-O { [%eval 1.05] [%clk 0:02:52] } 10... Nbd7 { [%eval 1.12] [%clk 0:02:45] } 11. Rfe1 { [%eval 0.92] [%clk 0:02:43] } 11... Bb7 { [%eval 0.88] [%clk 0:02:44] } 12. Rac1 { [%eval 0.43] [%clk 0:02:41] } 12... Re8 { [%eval 0.53] [%clk 0:02:41] } 13. Bf4 { [%eval 0.43] [%clk 0:02:37] } 13... c6 { [%eval 0.6] [%clk 0:02:27] } 14. Ne5 { [%eval 0.42] [%clk 0:02:31] } 14... Nf8?! { [%eval 1.17] } { Inaccuracy. Nxe5 was best. } { [%clk 0:02:24] } 15. e4 { [%eval 1.04] [%clk 0:02:15] } 15... Ne6 { [%eval 1.07] [%clk 0:02:22] } 16. Be3 { [%eval 0.97] [%clk 0:02:10] } 16... Rc8 { [%eval 0.91] [%clk 0:02:10] } 17. exd5 { [%eval 1.01] [%clk 0:02:06] } 17... cxd5 { [%eval 0.93] [%clk 0:02:10] } 18. Bh3 { [%eval 0.47] [%clk 0:01:53] } 18... Bd6 { [%eval 0.32] [%clk 0:02:03] } 19. Qa4 { [%eval 0.27] [%clk 0:01:53] } 19... a6 { [%eval 0.13] [%clk 0:01:56] } 20. a3 { [%eval -0.1] [%clk 0:01:30] } 20... b5 { [%eval 0.15] [%clk 0:01:46] } 21. Qd1 { [%eval 0.29] [%clk 0:01:29] } 21... Rc7 { [%eval 0.17] [%clk 0:01:35] } 22. Bg2 { [%eval -0.23] [%clk 0:01:28] } 22... Qa8?! { [%eval 0.52] } { Inaccuracy. Ne4 was best. } { [%clk 0:01:19] } 23. f4 { [%eval 0.08] [%clk 0:01:28] } 23... b4?! { [%eval 0.67] } { Inaccuracy. Nf8 was best. } { [%clk 0:01:02] } 24. axb4 { [%eval 0.83] [%clk 0:01:23] } 24... Bxb4 { [%eval 0.68] [%clk 0:01:03] } 25. Bd2?? { [%eval -1.48] } { Blunder. g4 was best. } { [%clk 0:01:10] } 25... Nxd4 { [%eval -1.6] [%clk 0:00:59] } 26. Na4?? { [%eval -5.76] } { Blunder. Ne4 was best. } { [%clk 0:00:43] } 26... Rxc1 { [%eval -5.95] [%clk 0:00:57] } 27. Qxc1 { [%eval -6.82] [%clk 0:00:35] } 27... Nb3 { [%eval -6.54] [%clk 0:00:57] } 28. Qc7 { [%eval -6.69] [%clk 0:00:36] } 28... Re7 { [%eval -6.15] [%clk 0:00:58] } 29. Qb6 { [%eval -6.4] [%clk 0:00:26] } 29... Bxd2 { [%eval -6.46] [%clk 0:00:56] } 30. Re2 { [%eval -6.63] [%clk 0:00:20] } 30... d4 { [%eval -6.44] [%clk 0:00:40] } 31. Qxb3 { [%eval -6.32] [%clk 0:00:16] } 31... Be3+ { [%eval -6.29] [%clk 0:00:41] } 32. Kh1 { [%eval -6.76] [%clk 0:00:06] } 32... Bxg2+ { [%eval -7.36] [%clk 0:00:41] } 33. Rxg2 { [%eval -6.76] [%clk 0:00:08] } 33... Rc7 { [%eval -5.9] [%clk 0:00:33] } 34. h3 { [%eval -6.54] [%clk 0:00:05] } 34... h5 { [%eval -6.93] [%clk 0:00:31] } 35. Nc5 { [%eval -6.93] [%clk 0:00:03] } 35... h4 { [%eval -7.0] [%clk 0:00:16] } 36. Ncd3 { [%eval -7.15] [%clk 0:00:03] } 36... hxg3 { [%eval -7.69] [%clk 0:00:16] } 37. h4 { [%eval -9.85] [%clk 0:00:03] } 37... Ne4 { [%eval -9.85] [%clk 0:00:14] } 38. h5? { [%eval #-10] } { Checkmate is now unavoidable. Ng4 was best. } { [%clk 0:00:03] } 38... Nf2+ { [%eval #-9] [%clk 0:00:12] } 39. Nxf2 { [%eval #-9] [%clk 0:00:03] } 39... Bxf2?! { [%eval -12.71] } { Lost forced checkmate sequence. gxf2 was best. } { [%clk 0:00:08] } 40. Qd1 { [%eval -15.83] [%clk 0:00:04] } 40... Qe4 { [%eval -13.4] [%clk 0:00:08] } 41. h6 { [%eval -14.26] [%clk 0:00:05] } 41... Qxf4 { [%eval -14.39] [%clk 0:00:08] } 42. hxg7?! { [%eval #-2] } { Checkmate is now unavoidable. Rxg3 was best. } { [%clk 0:00:05] } 42... Qh6+ { [%eval #-2] [%clk 0:00:08] } 0-1