Event: Black Sea Grand Prix | Small Earth
Site: chess24.com
Date: 2021-07-13
White: Onischenko, Leonid
WhiteElo: 1927
Black: Potapova, Margarita
BlackTitle: WIM
BlackElo: 2260
Result: 0-1
ECO: B50
Opening: Sicilian Defense: Modern Variations
Variant: Standard

1. e4 { [%eval 0.24] [%clk 1:30:51] } 1... c5 { [%eval 0.32] [%clk 1:30:26] } 2. Nf3 { [%eval 0.0] [%clk 1:31:10] } 2... d6 { [%eval 0.0] [%clk 1:30:51] } 3. c4 { [%eval 0.0] [%clk 1:31:20] } 3... Nc6?! { [%eval 0.71] } { Inaccuracy. e5 was best. } { [%clk 1:25:18] } 4. d4 { [%eval 0.17] [%clk 1:31:23] } 4... cxd4 { [%eval 0.41] [%clk 1:25:02] } 5. Nxd4 { [%eval 0.38] [%clk 1:31:47] } 5... Nf6 { [%eval 0.7] [%clk 1:24:19] } 6. Nc3 { [%eval 0.59] [%clk 1:31:44] } 6... g6 { [%eval 0.71] [%clk 1:24:44] } 7. Be2 { [%eval 0.58] [%clk 1:32:09] } 7... Bg7 { [%eval 0.83] [%clk 1:25:09] } 8. Be3 { [%eval 0.77] [%clk 1:32:37] } 8... O-O { [%eval 0.85] [%clk 1:25:08] } 9. O-O { [%eval 0.97] [%clk 1:32:38] } 9... Nxd4 { [%eval 0.94] [%clk 1:21:25] } 10. Bxd4 { [%eval 0.79] [%clk 1:32:53] } 10... Bd7 { [%eval 0.95] [%clk 1:21:50] } 11. Qd2 { [%eval 0.75] [%clk 1:33:14] } 11... Bc6 { [%eval 0.93] [%clk 1:22:17] } 12. f3 { [%eval 0.93] [%clk 1:33:35] } 12... Nd7 { [%eval 0.9] [%clk 1:22:42] } 13. Be3 { [%eval 0.95] [%clk 1:34:01] } 13... a5 { [%eval 0.91] [%clk 1:22:11] } 14. b3 { [%eval 1.06] [%clk 1:34:02] } 14... Nc5 { [%eval 0.85] [%clk 1:15:43] } 15. Rab1 { [%eval 1.06] [%clk 1:34:01] } 15... e6 { [%eval 0.74] [%clk 0:58:04] } 16. Rfc1 { [%eval 0.3] [%clk 1:29:26] } 16... Qe7 { [%eval 0.73] [%clk 0:56:29] } 17. Rc2 { [%eval 0.48] [%clk 1:28:48] } 17... f5 { [%eval 0.62] [%clk 0:49:52] } 18. exf5 { [%eval 0.51] [%clk 1:25:28] } 18... gxf5 { [%eval 0.47] [%clk 0:49:11] } 19. Rd1 { [%eval 0.42] [%clk 1:25:35] } 19... Rad8 { [%eval 0.39] [%clk 0:48:34] } 20. Bf4 { [%eval 0.0] [%clk 1:23:45] } 20... Be5 { [%eval 0.0] [%clk 0:47:09] } 21. Bxe5 { [%eval -0.23] [%clk 1:22:44] } 21... dxe5 { [%eval -0.12] [%clk 0:47:36] } 22. Qe3 { [%eval -0.09] [%clk 1:22:50] } 22... e4?! { [%eval 0.56] } { Inaccuracy. f4 was best. } { [%clk 0:44:08] } 23. fxe4?! { [%eval -0.15] } { Inaccuracy. Nd5 was best. } { [%clk 1:19:25] } 23... Nxe4?! { [%eval 0.42] } { Inaccuracy. f4 was best. } { [%clk 0:42:25] } 24. Nxe4 { [%eval 0.43] [%clk 1:19:45] } 24... Bxe4 { [%eval 0.59] [%clk 0:39:12] } 25. Rcd2 { [%eval 0.56] [%clk 1:19:11] } 25... Qg7 { [%eval 0.75] [%clk 0:28:14] } 26. Bf1?! { [%eval 0.12] } { Inaccuracy. Bf3 was best. } { [%clk 1:19:03] } 26... Rxd2 { [%eval 0.18] [%clk 0:24:59] } 27. Rxd2 { [%eval 0.26] [%clk 1:19:30] } 27... Re8 { [%eval 0.41] [%clk 0:22:58] } 28. Rd6 { [%eval 0.38] [%clk 1:18:51] } 28... Qe5 { [%eval 0.11] [%clk 0:21:30] } 29. Rd7 { [%eval 0.18] [%clk 1:19:12] } 29... f4 { [%eval 0.16] [%clk 0:20:47] } 30. Qh3 { [%eval -0.07] [%clk 1:19:16] } 30... Qc5+ { [%eval -0.54] [%clk 0:16:45] } 31. Kh1 { [%eval -0.08] [%clk 1:19:20] } 31... Qg5 { [%eval -0.54] [%clk 0:15:13] } 32. Qc3?! { [%eval -1.11] } { Inaccuracy. c5 was best. } { [%clk 1:17:45] } 32... Bc6 { [%eval -1.42] [%clk 0:14:00] } 33. Rd1?! { [%eval -2.44] } { Inaccuracy. Rd6 was best. } { [%clk 1:14:45] } 33... Rf8 { [%eval -2.83] [%clk 0:13:42] } 34. Qd2 { [%eval -2.69] [%clk 1:15:00] } 34... e5 { [%eval -2.69] [%clk 0:13:31] } 35. c5 { [%eval -2.81] [%clk 1:13:42] } 35... Qg7? { [%eval -1.12] } { Mistake. Kg7 was best. } { [%clk 0:12:06] } 36. Qxa5 { [%eval -1.33] [%clk 1:08:31] } 36... f3 { [%eval -1.58] [%clk 0:12:07] } 37. Qd2 { [%eval -1.47] [%clk 1:08:51] } 37... f2? { [%eval -0.12] } { Mistake. Kh8 was best. } { [%clk 0:11:29] } 38. Qd3? { [%eval -1.19] } { Mistake. Qe3 was best. } { [%clk 1:07:59] } 38... Kh8?! { [%eval -0.58] } { Inaccuracy. e4 was best. } { [%clk 0:10:06] } 39. Qh3?? { [%eval -2.7] } { Blunder. Qe3 was best. } { [%clk 1:07:33] } 39... Qg5 { [%eval -2.75] [%clk 0:05:14] } 40. b4 { [%eval -2.8] [%clk 1:06:10] } 40... Be4?! { [%eval -2.05] } { Inaccuracy. Qf4 was best. } { [%clk 0:04:30] } 41. b5? { [%eval -3.5] } { Mistake. a4 was best. } { [%clk 0:58:34] } 41... Bc2?? { [%eval -1.55] } { Blunder. Rg8 was best. } { [%clk 0:04:36] } 42. Ra1 { [%eval -2.08] [%clk 0:58:13] } 42... Qd2?? { [%eval -0.07] } { Blunder. Be4 was best. } { [%clk 0:02:58] } 43. Qa3?? { [%eval -1.77] } { Blunder. Qg3 was best. } { [%clk 0:58:41] } 43... Be4 { [%eval -1.64] [%clk 0:02:46] } 44. Qg3?? { [%eval -7.84] } { Blunder. Qc1 was best. } { [%clk 0:55:57] } 44... Qd4 { [%eval -7.75] [%clk 0:01:25] } 45. Rc1 { [%eval -9.56] [%clk 0:56:05] } 45... Rg8 { [%eval -9.92] [%clk 0:01:37] } 46. Qh3? { [%eval #-8] } { Checkmate is now unavoidable. Qb3 was best. } { [%clk 0:54:42] } 46... Qd2 { [%eval #-7] [%clk 0:01:47] } 47. Qc3 { [%eval #-4] [%clk 0:48:26] } 47... Qxc3? { [%eval -9.66] } { Lost forced checkmate sequence. Rxg2 was best. } { [%clk 0:02:12] } 48. Rxc3 { [%eval -9.69] [%clk 0:48:48] } 48... Rxg2 { [%eval -9.75] [%clk 0:02:21] } 0-1