Event: Round 1: Costa, Leonardo - Liu, Casper
Date: 2025-02-25
White: Costa, Leonardo
WhiteTitle: IM
WhiteElo: 2503
Black: Liu, Casper
BlackTitle: FM
BlackElo: 2271
Result: 1/2-1/2
ECO: B33
Opening: Sicilian Defense: Lasker-Pelikan Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:58] } 1... c5 { [%eval 0.25] [%clk 1:30:51] } 2. Nf3 { [%eval 0.2] [%clk 1:31:24] } 2... Nc6 { [%eval 0.25] [%clk 1:31:15] } 3. d4 { [%eval 0.27] [%clk 1:31:20] } 3... cxd4 { [%eval 0.35] [%clk 1:31:30] } 4. Nxd4 { [%eval 0.21] [%clk 1:31:46] } 4... Nf6 { [%eval 0.19] [%clk 1:31:54] } 5. Nc3 { [%eval 0.26] [%clk 1:32:14] } 5... e5 { [%eval 0.34] [%clk 1:32:18] } 6. Ndb5 { [%eval 0.31] [%clk 1:32:39] } 6... d6 { [%eval 0.34] [%clk 1:32:42] } 7. Nd5 { [%eval 0.28] [%clk 1:31:55] } 7... Nxd5 { [%eval 0.17] [%clk 1:32:59] } 8. exd5 { [%eval 0.36] [%clk 1:32:23] } 8... Nb8 { [%eval 0.25] [%clk 1:33:20] } 9. a4 { [%eval 0.3] [%clk 1:32:48] } 9... Be7 { [%eval 0.26] [%clk 1:33:26] } 10. Be2 { [%eval 0.25] [%clk 1:33:15] } 10... O-O { [%eval 0.27] [%clk 1:33:46] } 11. Bd2 { [%eval 0.3] [%clk 1:33:44] } 11... Nd7 { [%eval 0.36] [%clk 1:33:23] } 12. a5 { [%eval 0.37] [%clk 1:34:01] } 12... a6 { [%eval 0.3] [%clk 1:33:39] } 13. Na3 { [%eval 0.32] [%clk 1:33:29] } 13... Nf6 { [%eval 0.3] [%clk 1:33:56] } 14. Bb4 { [%eval 0.32] [%clk 1:31:49] } 14... b5 { [%eval 0.21] [%clk 1:34:24] } 15. c4 { [%eval 0.29] [%clk 1:28:54] } 15... Bb7 { [%eval 0.35] [%clk 1:34:38] } 16. O-O { [%eval 0.48] [%clk 1:27:48] } 16... bxc4 { [%eval 0.4] [%clk 1:35:06] } 17. Bxc4 { [%eval 0.36] [%clk 1:27:22] } 17... Rb8 { [%eval 0.33] [%clk 1:35:35] } 18. Be1 { [%eval 0.33] [%clk 1:15:57] } 18... Rc8 { [%eval 0.19] [%clk 1:21:24] } 19. Qd3 { [%eval 0.3] [%clk 1:12:03] } 19... Rc7 { [%eval 0.39] [%clk 1:10:48] } 20. Rd1 { [%eval 0.04] [%clk 1:00:17] } 20... Qa8 { [%eval 0.17] [%clk 1:10:54] } 21. f3 { [%eval 0.09] [%clk 1:00:00] } 21... Rc5 { [%eval 0.55] [%clk 1:08:39] } 22. b4 { [%eval 0.47] [%clk 0:52:02] } 22... Rxd5 { [%eval 0.54] [%clk 1:09:07] } 23. Bxd5 { [%eval 0.5] [%clk 0:52:28] } 23... Nxd5 { [%eval 0.48] [%clk 1:09:27] } 24. Nc4 { [%eval 0.45] [%clk 0:49:50] } 24... Nc7 { [%eval 0.94] [%clk 0:45:52] } 25. Nb6 { [%eval 0.95] [%clk 0:42:45] } 25... Qe8 { [%eval 1.02] [%clk 0:39:33] } 26. Qc4 { [%eval 0.88] [%clk 0:39:51] } 26... Nb5 { [%eval 0.95] [%clk 0:38:10] } 27. Bh4?! { [%eval 0.34] } { Inaccuracy. f4 was best. } { [%clk 0:37:40] } 27... g5?! { [%eval 1.25] } { Inaccuracy. Bxh4 was best. } { [%clk 0:34:15] } 28. Bf2 { [%eval 1.27] [%clk 0:36:14] } 28... Kh8?! { [%eval 1.93] } { Inaccuracy. Bd8 was best. } { [%clk 0:34:43] } 29. Nd5 { [%eval 1.8] [%clk 0:33:11] } 29... Bd8 { [%eval 2.19] [%clk 0:31:11] } 30. Bb6? { [%eval 0.88] } { Mistake. Nc3 was best. } { [%clk 0:27:09] } 30... Bxb6+ { [%eval 0.83] [%clk 0:26:40] } 31. Nxb6 { [%eval 0.99] [%clk 0:22:59] } 31... f5 { [%eval 0.88] [%clk 0:27:04] } 32. Rc1?! { [%eval 0.17] } { Inaccuracy. Qd3 was best. } { [%clk 0:21:03] } 32... Qg6?! { [%eval 0.83] } { Inaccuracy. f4 was best. } { [%clk 0:22:39] } 33. Nd5?! { [%eval 0.12] } { Inaccuracy. Qd3 was best. } { [%clk 0:16:56] } 33... Nd4 { [%eval 0.52] [%clk 0:21:04] } 34. Rfe1? { [%eval -0.62] } { Mistake. Rf2 was best. } { [%clk 0:12:46] } 34... g4 { [%eval -0.63] [%clk 0:15:35] } 35. f4 { [%eval -0.77] [%clk 0:13:08] } 35... Nf3+ { [%eval -0.67] [%clk 0:16:01] } 36. gxf3?? { [%eval -3.72] } { Blunder. Kf2 was best. } { [%clk 0:08:51] } 36... gxf3+ { [%eval -3.69] [%clk 0:16:30] } 37. Kf2 { [%eval -3.57] [%clk 0:09:16] } 37... Qg2+ { [%eval -3.49] [%clk 0:16:55] } 38. Ke3 { [%eval -3.28] [%clk 0:09:44] } 38... f2 { [%eval -3.57] [%clk 0:13:12] } 39. Red1 { [%eval -3.09] [%clk 0:08:17] } 39... Bxd5?! { [%eval -2.25] } { Inaccuracy. Re8 was best. } { [%clk 0:03:28] } 40. Rxd5 { [%eval -2.19] [%clk 0:08:43] } 40... exf4+ { [%eval -2.09] [%clk 0:03:35] } 41. Kd4 { [%eval -2.18] [%clk 0:30:29] } 41... Re8 { [%eval -2.09] [%clk 0:13:48] } 42. Kc3 { [%eval -1.62] [%clk 0:26:53] } 42... Re3+? { [%eval -0.39] } { Mistake. Re1 was best. } { [%clk 0:07:57] } 43. Rd3 { [%eval -0.46] [%clk 0:27:18] } 43... f1=Q { [%eval 0.0] [%clk 0:05:27] } 44. Rd1?? { [%eval #-8] } { Checkmate is now unavoidable. Rxf1 was best. } { [%clk 0:27:16] } 44... Qxd3+?? { [%eval -0.22] } { Lost forced checkmate sequence. Qxd1 was best. } { [%clk 0:05:26] } 45. Rxd3 { [%eval -0.23] [%clk 0:27:45] } 45... Qf1 { [%eval 0.0] [%clk 0:05:43] } 46. Rxe3 { [%eval -0.03] [%clk 0:12:18] } 46... Qc1+ { [%eval -0.14] [%clk 0:04:44] } 47. Kb3 { [%eval -0.18] [%clk 0:12:46] } 47... Qd1+ { [%eval 0.0] [%clk 0:03:19] } 48. Qc2 { [%eval 0.0] [%clk 0:12:18] } 48... Qd5+ { [%clk 0:03:37] } 49. Qc4 { [%clk 0:12:45] } 49... Qd1+ { [%clk 0:05:27] } 50. Qc2 { [%clk 0:27:46] } 1/2-1/2