Event: Round 3: Samuel Mesa Baez - Santiago Ospina Castro
Date: 2023-06-17
White: Samuel Mesa Baez
Black: Santiago Ospina Castro
Result: 1/2-1/2
ECO: B53
Opening: Sicilian Defense: Chekhover Variation
Variant: Standard

1. e4 { [%eval 0.36] [%clk 1:28:11] } 1... c5 { [%eval 0.32] [%clk 1:29:30] } 2. Nf3 { [%eval 0.0] [%clk 1:28:32] } 2... d6 { [%eval 0.0] [%clk 1:29:57] } 3. d4 { [%eval 0.25] [%clk 1:28:57] } 3... cxd4 { [%eval 0.13] [%clk 1:30:22] } 4. Qxd4 { [%eval 0.0] [%clk 1:29:23] } 4... Nc6 { [%eval 0.26] [%clk 1:29:11] } 5. Bb5 { [%eval 0.17] [%clk 1:29:43] } 5... Bd7 { [%eval 0.2] [%clk 1:29:15] } 6. Bxc6 { [%eval 0.0] [%clk 1:30:05] } 6... Bxc6 { [%eval 0.18] [%clk 1:29:42] } 7. Nc3 { [%eval 0.0] [%clk 1:28:49] } 7... Nf6 { [%eval -0.13] [%clk 1:28:19] } 8. Bg5 { [%eval 0.05] [%clk 1:29:05] } 8... e6 { [%eval 0.0] [%clk 1:28:26] } 9. O-O-O { [%eval 0.01] [%clk 1:29:13] } 9... Be7 { [%eval -0.01] [%clk 1:28:51] } 10. Rhe1 { [%eval 0.11] [%clk 1:29:05] } 10... O-O { [%eval 0.27] [%clk 1:27:35] } 11. Kb1?! { [%eval -0.37] } { Inaccuracy. e5 was best. } { [%clk 1:28:18] } 11... Qc7 { [%eval -0.26] [%clk 1:21:18] } 12. h4 { [%eval -0.7] [%clk 1:20:44] } 12... Rfd8?! { [%eval 0.0] } { Inaccuracy. b5 was best. } { [%clk 1:12:02] } 13. h5? { [%eval -1.42] } { Mistake. Qd3 was best. } { [%clk 1:08:51] } 13... h6 { [%eval -1.41] [%clk 0:56:56] } 14. Bh4 { [%eval -1.42] [%clk 1:08:00] } 14... Ng4?? { [%eval 0.63] } { Blunder. b5 was best. } { [%clk 0:56:17] } 15. Nd5 { [%eval 0.6] [%clk 0:53:38] } 15... exd5 { [%eval 0.54] [%clk 0:49:51] } 16. Bxe7 { [%eval 0.61] [%clk 0:53:49] } 16... Qxe7 { [%eval 0.67] [%clk 0:49:19] } 17. exd5 { [%eval 0.69] [%clk 0:54:15] } 17... Qd7 { [%eval 0.65] [%clk 0:48:15] } 18. dxc6 { [%eval 0.54] [%clk 0:54:35] } 18... bxc6 { [%eval 0.67] [%clk 0:48:40] } 19. Ne5 { [%eval 0.61] [%clk 0:46:55] } 19... Nxe5 { [%eval 0.72] [%clk 0:49:01] } 20. Rxe5 { [%eval 0.68] [%clk 0:47:20] } 20... Re8 { [%eval 0.71] [%clk 0:42:11] } 21. b3 { [%eval 0.74] [%clk 0:46:26] } 21... Rxe5 { [%eval 0.83] [%clk 0:37:46] } 22. Qxe5 { [%eval 0.53] [%clk 0:46:33] } 22... Rd8 { [%eval 0.73] [%clk 0:38:02] } 23. Qd4 { [%eval 0.44] [%clk 0:43:59] } 23... d5?! { [%eval 1.08] } { Inaccuracy. c5 was best. } { [%clk 0:38:11] } 24. Rd3 { [%eval 1.03] [%clk 0:42:45] } 24... Kh8 { [%eval 1.35] [%clk 0:30:27] } 25. Rg3 { [%eval 1.36] [%clk 0:27:41] } 25... f6 { [%eval 1.09] [%clk 0:30:51] } 26. Kb2 { [%eval 1.13] [%clk 0:27:43] } 26... Re8 { [%eval 1.13] [%clk 0:27:04] } 27. Re3 { [%eval 1.0] [%clk 0:23:34] } 27... Rxe3 { [%eval 0.89] [%clk 0:25:42] } 1/2-1/2