Event: Round 9: Demchenko, Anton - Kostov, Deyan Samuil
Date: 2025-06-14
White: Demchenko, Anton
WhiteTitle: GM
WhiteElo: 2619
Black: Kostov, Deyan Samuil
BlackTitle: FM
BlackElo: 2352
Result: 1-0
ECO: D02
Opening: Queen's Pawn Game: London System
Variant: Standard
TimeControl: 90+30

1. d4 { [%eval 0.17] [%clk 1:30:47] } 1... d5 { [%eval 0.2] [%clk 1:30:48] } 2. Nf3 { [%eval 0.08] [%clk 1:31:13] } 2... Nf6 { [%eval 0.11] [%clk 1:31:13] } 3. Bf4 { [%eval 0.02] [%clk 1:31:39] } 3... e6 { [%eval 0.1] [%clk 1:31:19] } 4. e3 { [%eval 0.0] [%clk 1:32:04] } 4... Bd6 { [%eval 0.07] [%clk 1:31:29] } 5. Ne5 { [%eval 0.0] [%clk 1:32:29] } 5... O-O { [%eval 0.0] [%clk 1:30:56] } 6. c3 { [%eval -0.04] [%clk 1:32:14] } 6... c5 { [%eval 0.0] [%clk 1:30:30] } 7. Bd3 { [%eval 0.0] [%clk 1:32:35] } 7... Qc7 { [%eval 0.0] [%clk 1:29:08] } 8. Nd2 { [%eval 0.04] [%clk 1:32:45] } 8... Nbd7 { [%eval 0.27] [%clk 1:28:01] } 9. Ndf3 { [%eval 0.19] [%clk 1:32:53] } 9... c4 { [%eval 0.26] [%clk 1:25:32] } 10. Bc2 { [%eval 0.33] [%clk 1:32:36] } 10... b5 { [%eval 0.33] [%clk 1:25:48] } 11. a3 { [%eval 0.02] [%clk 1:08:50] } 11... Ne4 { [%eval 0.05] [%clk 1:20:31] } 12. Bg3 { [%eval -0.13] [%clk 0:51:08] } 12... Nb6 { [%eval -0.21] [%clk 1:15:31] } 13. Nd2 { [%eval -0.21] [%clk 0:48:22] } 13... f6 { [%eval -0.31] [%clk 1:11:42] } 14. Nef3 { [%eval -0.24] [%clk 0:48:12] } 14... Bb7 { [%eval -0.33] [%clk 1:11:11] } 15. O-O { [%eval -0.44] [%clk 0:42:24] } 15... a5 { [%eval -0.18] [%clk 1:06:41] } 16. Bxd6 { [%eval -0.17] [%clk 0:38:10] } 16... Qxd6 { [%eval -0.17] [%clk 1:05:58] } 17. Qb1 { [%eval -0.25] [%clk 0:36:11] } 17... f5 { [%eval -0.22] [%clk 1:02:17] } 18. Bxe4 { [%eval -0.34] [%clk 0:36:25] } 18... dxe4 { [%eval -0.37] [%clk 1:01:39] } 19. Ne5 { [%eval -0.27] [%clk 0:36:54] } 19... Bd5 { [%eval -0.3] [%clk 0:58:14] } 20. f3 { [%eval -0.48] [%clk 0:34:24] } 20... exf3 { [%eval -0.42] [%clk 0:56:44] } 21. Ndxf3 { [%eval -0.38] [%clk 0:34:06] } 21... b4 { [%eval -0.12] [%clk 0:55:21] } 22. Qc2 { [%eval -0.44] [%clk 0:34:22] } 22... Be4 { [%eval -0.07] [%clk 0:48:24] } 23. Qe2 { [%eval -0.06] [%clk 0:34:05] } 23... bxc3 { [%eval -0.14] [%clk 0:45:37] } 24. bxc3 { [%eval -0.16] [%clk 0:34:33] } 24... Nd5 { [%eval 0.0] [%clk 0:42:13] } 25. Rfc1 { [%eval 0.0] [%clk 0:33:52] } 25... Rab8 { [%eval 0.0] [%clk 0:36:57] } 26. Nd2 { [%eval 0.01] [%clk 0:33:50] } 26... Rfc8 { [%eval 0.17] [%clk 0:36:39] } 27. a4 { [%eval -0.06] [%clk 0:31:16] } 27... Qa6?! { [%eval 0.73] } { Inaccuracy. Nf6 was best. } { [%clk 0:33:17] } 28. Nxe4 { [%eval 0.81] [%clk 0:28:37] } 28... fxe4 { [%eval 0.81] [%clk 0:33:41] } 29. Nd7 { [%eval 0.72] [%clk 0:29:04] } 29... Rb3 { [%eval 0.73] [%clk 0:29:19] } 30. Nc5 { [%eval 0.96] [%clk 0:29:30] } 30... Rxc5?? { [%eval 3.68] } { Blunder. Qc6 was best. } { [%clk 0:29:46] } 31. dxc5 { [%eval 3.68] [%clk 0:29:57] } 31... Nxc3 { [%eval 4.52] [%clk 0:30:01] } 32. Qf1 { [%eval 4.61] [%clk 0:26:41] } 32... h6 { [%eval 4.9] [%clk 0:23:03] } 33. Rc2 { [%eval 4.98] [%clk 0:25:19] } 33... Nd5 { [%eval 4.81] [%clk 0:14:23] } 34. Qxc4 { [%eval 4.89] [%clk 0:25:16] } 34... Qxc4 { [%eval 4.9] [%clk 0:14:36] } 35. Rxc4 { [%eval 4.86] [%clk 0:25:45] } 35... Nxe3 { [%eval 4.74] [%clk 0:14:37] } 36. Rxe4 { [%eval 4.66] [%clk 0:25:42] } 36... Rc3 { [%eval 4.93] [%clk 0:14:02] } 37. Rxe6 { [%eval 4.92] [%clk 0:24:37] } 37... Nf5 { [%eval 4.9] [%clk 0:13:52] } 38. Rc6 { [%eval 4.76] [%clk 0:21:29] } 38... Rc2 { [%eval 4.58] [%clk 0:13:54] } 39. Rc8+ { [%eval 4.87] [%clk 0:19:43] } 39... Kh7 { [%eval 4.82] [%clk 0:14:17] } 40. Ra3 { [%eval 4.36] [%clk 0:16:59] } 40... Nd6 { [%eval 4.59] [%clk 0:13:40] } 41. Rc7 { [%eval 4.45] [%clk 0:16:03] } 41... Ne4 { [%eval 4.78] [%clk 0:13:19] } 42. h4 { [%eval 4.71] [%clk 0:15:59] } 42... Kg6 { [%eval 5.17] [%clk 0:12:11] } 43. h5+ { [%eval 5.18] [%clk 0:10:36] } 43... Kxh5 { [%eval 5.13] [%clk 0:11:41] } 44. Rxg7 { [%eval 5.01] [%clk 0:11:05] } 44... Ng5 { [%eval 4.87] [%clk 0:11:05] } 45. Rc7 { [%eval 4.81] [%clk 0:11:29] } 45... Ne6 { [%eval 5.12] [%clk 0:10:03] } 46. Rh3+ { [%eval 4.66] [%clk 0:08:25] } 46... Kg4 { [%eval 5.11] [%clk 0:09:30] } 47. Rc8 { [%eval 5.07] [%clk 0:08:44] } 47... h5 { [%eval 4.97] [%clk 0:07:25] } 48. c6 { [%eval 5.07] [%clk 0:05:19] } 48... h4 { [%eval 5.06] [%clk 0:07:17] } 49. Rh8 { [%eval 4.9] [%clk 0:04:49] } 49... Rxc6 { [%eval 5.06] [%clk 0:07:20] } 50. R8xh4+ { [%eval 5.13] [%clk 0:05:08] } 50... Kf5 { [%eval 4.99] [%clk 0:07:33] } 51. Rh5+ { [%eval 5.03] [%clk 0:05:18] } 51... Ke4 { [%eval 5.0] [%clk 0:07:56] } 52. R3h4+ { [%eval 5.07] [%clk 0:05:05] } 52... Nf4 { [%eval 5.98] [%clk 0:07:01] } 53. Rh8 { [%eval 5.7] [%clk 0:04:31] } 53... Kd5 { [%eval 6.44] [%clk 0:05:41] } 1-0