Event: Round 9: Costa, Leonardo - Dau Khuong Duy
Date: 2025-03-05
White: Costa, Leonardo
WhiteTitle: IM
WhiteElo: 2500
Black: Dau Khuong Duy
BlackTitle: IM
BlackElo: 2411
Result: 1/2-1/2
ECO: B28
Opening: Sicilian Defense: O'Kelly Variation, Venice System
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:58] } 1... c5 { [%eval 0.25] [%clk 1:30:50] } 2. Nf3 { [%eval 0.2] [%clk 1:31:24] } 2... a6 { [%eval 0.5] [%clk 1:30:57] } 3. c3 { [%eval 0.28] [%clk 1:26:29] } 3... d5 { [%eval 0.36] [%clk 1:31:13] } 4. e5 { [%eval -0.07] [%clk 1:25:39] } 4... Nc6 { [%eval -0.07] [%clk 1:31:04] } 5. d4 { [%eval -0.12] [%clk 1:25:38] } 5... cxd4 { [%eval 0.0] [%clk 1:30:14] } 6. cxd4 { [%eval 0.0] [%clk 1:26:04] } 6... Bg4 { [%eval 0.0] [%clk 1:30:28] } 7. Be2 { [%eval -0.2] [%clk 1:17:14] } 7... e6 { [%eval 0.0] [%clk 1:30:12] } 8. Nbd2 { [%eval -0.21] [%clk 1:16:48] } 8... Nge7 { [%eval -0.05] [%clk 1:28:06] } 9. a3 { [%eval -0.48] [%clk 1:07:38] } 9... Nf5 { [%eval -0.15] [%clk 1:25:36] } 10. b4 { [%eval -0.12] [%clk 1:08:04] } 10... Be7 { [%eval 0.27] [%clk 1:11:56] } 11. O-O { [%eval -0.12] [%clk 1:06:18] } 11... O-O { [%eval 0.4] [%clk 1:11:21] } 12. Bb2 { [%eval 0.0] [%clk 1:05:52] } 12... f6 { [%eval 0.46] [%clk 1:05:26] } 13. h3 { [%eval 0.45] [%clk 1:02:36] } 13... Bxf3 { [%eval 0.45] [%clk 1:05:14] } 14. Nxf3 { [%eval 0.52] [%clk 1:03:01] } 14... Qb6 { [%eval 0.72] [%clk 1:02:03] } 15. Kh1?! { [%eval 0.06] } { Inaccuracy. g4 was best. } { [%clk 0:41:28] } 15... fxe5 { [%eval 0.07] [%clk 1:00:44] } 16. dxe5 { [%eval 0.07] [%clk 0:41:55] } 16... Bc5 { [%eval 0.11] [%clk 0:46:16] } 17. Qe1 { [%eval -0.07] [%clk 0:32:42] } 17... Nfd4 { [%eval 0.0] [%clk 0:32:59] } 18. Rb1 { [%eval 0.0] [%clk 0:31:23] } 18... Nxe2 { [%eval 0.0] [%clk 0:32:07] } 19. bxc5 { [%eval 0.0] [%clk 0:28:24] } 19... Qb5 { [%eval 0.0] [%clk 0:32:31] } 20. Ba1 { [%eval 0.0] [%clk 0:26:31] } 20... Qd3 { [%eval 0.0] [%clk 0:31:50] } 21. Qd1?? { [%eval -3.68] } { Blunder. Rd1 was best. } { [%clk 0:26:58] } 21... Rxf3 { [%eval -3.5] [%clk 0:26:00] } 22. gxf3 { [%eval -3.81] [%clk 0:27:25] } 22... Qxf3+ { [%eval -3.78] [%clk 0:26:23] } 23. Kh2 { [%eval -3.59] [%clk 0:27:53] } 23... Qf4+ { [%eval -3.27] [%clk 0:24:37] } 24. Kg2 { [%eval -3.14] [%clk 0:26:42] } 24... Qe4+ { [%eval -3.21] [%clk 0:23:30] } 25. Kh2 { [%eval -3.71] [%clk 0:26:37] } 25... Rf8 { [%eval -3.57] [%clk 0:18:54] } 26. f4 { [%eval -3.68] [%clk 0:20:26] } 26... Rxf4 { [%eval -3.51] [%clk 0:15:14] } 27. Qb3?! { [%eval -4.61] } { Inaccuracy. Rxb7 was best. } { [%clk 0:19:38] } 27... Ncd4 { [%eval -4.63] [%clk 0:12:17] } 28. Bxd4 { [%eval -3.83] [%clk 0:15:06] } 28... Nxd4 { [%eval -4.68] [%clk 0:12:31] } 29. Qxb7?! { [%eval -6.52] } { Inaccuracy. Rxf4 was best. } { [%clk 0:15:32] } 29... Nf3+ { [%eval -3.95] [%clk 0:08:44] } 30. Rxf3 { [%eval -3.6] [%clk 0:14:13] } 30... Rxf3 { [%eval -3.37] [%clk 0:08:54] } 31. Qc8+ { [%eval -3.3] [%clk 0:11:21] } 31... Rf8 { [%eval -3.19] [%clk 0:09:18] } 32. Qxe6+ { [%eval -3.46] [%clk 0:11:47] } 32... Kh8 { [%eval -3.55] [%clk 0:09:44] } 33. Rb2 { [%eval -3.55] [%clk 0:11:42] } 33... Qf4+ { [%eval -3.52] [%clk 0:07:19] } 34. Kg2 { [%eval -3.43] [%clk 0:12:10] } 34... Qf3+ { [%eval -3.75] [%clk 0:05:30] } 35. Kh2 { [%eval -3.98] [%clk 0:12:20] } 35... Qf4+ { [%eval -3.77] [%clk 0:05:36] } 36. Kg2 { [%eval -3.3] [%clk 0:12:47] } 36... d4?? { [%eval -0.03] } { Blunder. Qe4+ was best. } { [%clk 0:05:16] } 37. c6 { [%eval -0.02] [%clk 0:06:24] } 37... Qf3+ { [%eval 0.0] [%clk 0:04:46] } 38. Kh2 { [%eval 0.0] [%clk 0:06:51] } 38... Qf4+ { [%eval 0.0] [%clk 0:05:11] } 39. Kg2 { [%eval -0.03] [%clk 0:07:19] } 39... d3 { [%eval 0.0] [%clk 0:02:24] } 40. Qd6 { [%eval 0.0] [%clk 0:02:27] } 40... Qf1+ { [%eval 0.0] [%clk 0:02:24] } 41. Kh2 { [%eval 0.0] [%clk 0:02:04] } 41... Qf4+ { [%eval 0.0] [%clk 0:24:36] } 42. Kg2 { [%eval 0.0] [%clk 0:32:29] } 42... Qf3+ { [%eval 0.0] [%clk 0:23:19] } 43. Kh2 { [%eval 0.0] [%clk 0:31:33] } 43... Qf4+ { [%eval 0.0] [%clk 0:23:05] } 44. Kg2 { [%eval 0.0] [%clk 0:31:55] } 1/2-1/2