Event: Round 1: William Perez - Juan Pablo Sierra Mejia
Date: 2023-08-04
White: William Perez
Black: Juan Pablo Sierra Mejia
Result: 0-1
ECO: A15
Opening: English Opening: Anglo-Indian Defense, Queen's Indian Formation
Variant: Standard

1. c4 { [%eval 0.23] [%clk 1:18:40] } 1... Nf6 { [%eval 0.29] [%clk 1:30:00] } 2. g3 { [%eval 0.13] [%clk 1:18:38] } 2... e6 { [%eval 0.35] [%clk 1:30:14] } 3. Nf3 { [%eval 0.13] [%clk 1:18:13] } 3... b6 { [%eval 0.4] [%clk 1:29:10] } 4. Bg2 { [%eval 0.46] [%clk 1:17:52] } 4... Bb7 { [%eval 0.46] [%clk 1:29:32] } 5. b3 { [%eval 0.1] [%clk 1:16:07] } 5... Be7 { [%eval 0.29] [%clk 1:28:47] } 6. Bb2 { [%eval 0.2] [%clk 1:16:18] } 6... O-O { [%eval 0.22] [%clk 1:28:45] } 7. O-O { [%eval 0.21] [%clk 1:16:14] } 7... c5 { [%eval 0.26] [%clk 1:26:49] } 8. Nc3 { [%eval 0.04] [%clk 1:13:43] } 8... h6 { [%eval 0.39] [%clk 1:24:34] } 9. d4 { [%eval 0.34] [%clk 1:11:35] } 9... cxd4 { [%eval 0.29] [%clk 1:23:38] } 10. Nb5 { [%eval -0.03] [%clk 1:08:00] } 10... a6 { [%eval -0.04] [%clk 1:22:14] } 11. Nbxd4 { [%eval -0.06] [%clk 1:07:00] } 11... d5 { [%eval 0.41] [%clk 1:21:53] } 12. cxd5 { [%eval 0.39] [%clk 1:05:25] } 12... Bxd5 { [%eval 0.48] [%clk 1:21:35] } 13. Ne5 { [%eval 0.05] [%clk 1:00:59] } 13... Bxg2 { [%eval 0.04] [%clk 1:20:56] } 14. Kxg2 { [%eval 0.0] [%clk 1:01:16] } 14... Qc7 { [%eval 0.09] [%clk 1:15:16] } 15. Ndf3 { [%eval 0.07] [%clk 0:52:27] } 15... Rd8 { [%eval 0.45] [%clk 1:06:24] } 16. Rc1 { [%eval 0.4] [%clk 0:52:29] } 16... Qb7 { [%eval 0.44] [%clk 1:05:01] } 17. Qc2 { [%eval 0.46] [%clk 0:51:55] } 17... Nd5 { [%eval 0.81] [%clk 0:58:44] } 18. Rfd1 { [%eval 0.92] [%clk 0:45:29] } 18... Bg5 { [%eval 1.09] [%clk 0:57:14] } 19. e3 { [%eval 0.94] [%clk 0:43:05] } 19... Nd7 { [%eval 1.18] [%clk 0:52:09] } 20. Qc6 { [%eval 1.4] [%clk 0:40:30] } 20... Qxc6 { [%eval 1.48] [%clk 0:50:04] } 21. Nxc6 { [%eval 1.27] [%clk 0:40:24] } 21... Re8 { [%eval 1.22] [%clk 0:50:18] } 22. Nxg5 { [%eval 1.29] [%clk 0:31:37] } 22... hxg5 { [%eval 1.35] [%clk 0:50:39] } 23. e4 { [%eval 1.31] [%clk 0:31:58] } 23... N5f6 { [%eval 1.31] [%clk 0:50:49] } 24. h3 { [%eval 1.05] [%clk 0:30:12] } 24... a5 { [%eval 1.34] [%clk 0:45:32] } 25. f3 { [%eval 1.22] [%clk 0:26:37] } 25... a4?! { [%eval 2.19] } { Inaccuracy. Nf8 was best. } { [%clk 0:44:02] } 26. b4 { [%eval 2.09] [%clk 0:25:56] } 26... a3 { [%eval 2.04] [%clk 0:44:25] } 27. Bd4 { [%eval 1.98] [%clk 0:22:28] } 27... Kh7?! { [%eval 2.86] } { Inaccuracy. b5 was best. } { [%clk 0:43:11] } 28. Bxf6? { [%eval 1.37] } { Mistake. b5 was best. } { [%clk 0:18:47] } 28... Nxf6 { [%eval 1.48] [%clk 0:43:35] } 29. Rd3 { [%eval 1.15] [%clk 0:18:47] } 29... Rec8 { [%eval 1.26] [%clk 0:41:16] } 30. Rcc3 { [%eval 1.35] [%clk 0:16:39] } 30... Rc7 { [%eval 1.25] [%clk 0:32:26] } 31. Kf2 { [%eval 0.72] [%clk 0:12:03] } 31... Nd7 { [%eval 0.9] [%clk 0:29:17] } 32. Ke3 { [%eval 0.73] [%clk 0:10:54] } 32... Rac8 { [%eval 0.91] [%clk 0:27:55] } 33. Ne7?! { [%eval 0.0] } { Inaccuracy. b5 was best. } { [%clk 0:09:07] } 33... Rxc3 { [%eval 0.0] [%clk 0:27:08] } 34. Nxc8 { [%eval 0.0] [%clk 0:09:25] } 34... Rxc8 { [%eval 0.0] [%clk 0:26:50] } 35. Rxd7 { [%eval 0.0] [%clk 0:09:48] } 35... Rc2 { [%eval 0.0] [%clk 0:25:55] } 36. Rd2 { [%eval -0.17] [%clk 0:09:50] } 36... Rb2 { [%eval -0.14] [%clk 0:26:14] } 37. Kd3 { [%eval -0.11] [%clk 0:05:40] } 37... Rxb4 { [%eval -0.14] [%clk 0:26:19] } 38. Kc3?? { [%eval -2.07] } { Blunder. Rc2 was best. } { [%clk 0:06:00] } 38... Rb1 { [%eval -2.28] [%clk 0:26:36] } 39. Rd3 { [%eval -2.42] [%clk 0:04:20] } 39... b5 { [%eval -2.63] [%clk 0:26:27] } 40. f4? { [%eval -4.73] } { Mistake. Kd4 was best. } { [%clk 0:01:48] } 40... gxf4 { [%eval -4.83] [%clk 0:26:49] } 41. gxf4 { [%eval -4.84] [%clk 0:02:17] } 41... Rb2 { [%eval -4.85] [%clk 0:25:03] } 42. Rd2?! { [%eval -6.46] } { Inaccuracy. Rd7 was best. } { [%clk 0:01:45] } 42... b4+ { [%eval -6.27] [%clk 0:25:20] } 43. Kd3 { [%eval -6.09] [%clk 0:01:59] } 43... Rxd2+ { [%eval -6.2] [%clk 0:25:40] } 0-1