Event: Round 1: Ethan Guo - David Arenas
Date: 2024-01-14
White: Ethan Guo
WhiteTitle: CM
Black: David Arenas
BlackTitle: GM
Result: 0-1
ECO: B90
Opening: Sicilian Defense: Najdorf Variation
Variant: Standard

1. e4 { [%eval 0.2] [%clk 1:24:56] } 1... c5 { [%eval 0.33] [%clk 1:27:32] } 2. Nf3 { [%eval 0.17] [%clk 1:25:20] } 2... d6 { [%eval 0.0] [%clk 1:27:54] } 3. d4 { [%eval 0.25] [%clk 1:25:45] } 3... Nf6 { [%eval 0.3] [%clk 1:28:17] } 4. Nc3 { [%eval 0.22] } 4... cxd4 { [%eval 0.29] [%clk 1:28:43] } 5. Nxd4 { [%eval 0.21] [%clk 1:26:30] } 5... a6 { [%eval 0.24] [%clk 1:28:43] } 6. Qd3 { [%eval -0.09] [%clk 1:26:30] } 6... g6 { [%eval 0.26] [%clk 1:28:43] } 7. f3 { [%eval 0.13] [%clk 1:26:30] } 7... Bg7 { [%eval 0.42] [%clk 1:28:43] } 8. Be3 { [%eval 0.43] [%clk 1:26:30] } 8... Nbd7 { [%eval 0.56] [%clk 1:28:43] } 9. O-O-O?! { [%eval -0.04] } { Inaccuracy. Qd2 was best. } { [%clk 1:26:30] } 9... b5 { [%eval 0.22] [%clk 1:28:43] } 10. g4 { [%eval 0.34] [%clk 1:26:30] } 10... Bb7 { [%eval 0.47] [%clk 1:28:43] } 11. g5 { [%eval 0.0] [%clk 1:26:30] } 11... Nh5 { [%eval 0.02] [%clk 1:28:43] } 12. f4?? { [%eval -1.88] } { Blunder. Qd2 was best. } { [%clk 1:26:30] } 12... Nc5 { [%eval -1.96] [%clk 1:28:43] } 13. Qe2 { [%eval -1.89] [%clk 1:26:30] } 13... Nxe4?! { [%eval -1.28] } { Inaccuracy. b4 was best. } { [%clk 1:28:43] } 14. Nxe4 { [%eval -1.36] [%clk 1:26:30] } 14... Bxe4 { [%eval -1.34] [%clk 1:28:43] } 15. Bg2 { [%eval -1.46] [%clk 1:26:30] } 15... Bxg2 { [%eval -1.24] [%clk 1:28:43] } 16. Qxg2 { [%eval -1.49] [%clk 1:26:30] } 16... O-O { [%eval -1.35] [%clk 1:28:43] } 17. Kb1 { [%eval -1.42] [%clk 1:26:30] } 17... Rc8 { [%eval -1.4] [%clk 1:28:43] } 18. Ne2 { [%eval -1.69] [%clk 1:26:30] } 18... Qc7 { [%eval -1.64] [%clk 1:28:43] } 19. Ng3?! { [%eval -2.75] } { Inaccuracy. Rd2 was best. } { [%clk 1:26:30] } 19... Nxg3? { [%eval -1.47] } { Mistake. Bxb2 was best. } { [%clk 1:28:43] } 20. hxg3 { [%eval -1.53] [%clk 1:26:30] } 20... Bxb2 { [%eval -1.51] [%clk 1:28:43] } 21. Kxb2 { [%eval -1.39] [%clk 0:55:37] } 21... Qc3+ { [%eval -1.41] [%clk 1:10:12] } 22. Kb1 { [%eval -1.43] [%clk 0:55:46] } 22... Qxe3 { [%eval -1.59] [%clk 1:10:40] } 23. Rd3 { [%eval -1.55] [%clk 0:55:35] } 23... Qc5 { [%eval -1.53] [%clk 1:04:53] } 24. Qh2 { [%eval -1.74] [%clk 0:55:49] } 24... h5 { [%eval -1.69] [%clk 1:05:17] } 25. gxh6?! { [%eval -2.47] } { Inaccuracy. g4 was best. } { [%clk 0:55:49] } 25... Qb4+ { [%eval -2.33] [%clk 1:05:17] } 26. Rb3 { [%eval -2.34] [%clk 0:55:49] } 26... Qe4 { [%eval -2.48] [%clk 1:05:17] } 27. Rc1 { [%eval -2.34] [%clk 0:55:49] } 27... Rc4 { [%eval -2.56] [%clk 1:05:17] } 28. Qd2 { [%eval -2.46] [%clk 0:55:49] } 28... Qd4 { [%eval -2.41] [%clk 1:05:17] } 29. Qe2 { [%eval -2.9] [%clk 0:55:49] } 29... Rfc8?! { [%eval -2.1] } { Inaccuracy. Qf6 was best. } { [%clk 1:05:17] } 30. f5 { [%eval -2.29] [%clk 0:55:49] } 30... Qe4 { [%eval -2.27] [%clk 1:05:17] } 31. Qxe4 { [%eval -2.3] [%clk 0:55:49] } 31... Rf8?? { [%eval #6] } { Checkmate is now unavoidable. Rxe4 was best. } { [%clk 1:02:40] } 32. Qe2? { [%eval 7.63] } { Lost forced checkmate sequence. Qxe7 was best. } { [%clk 0:41:09] } 32... Rfc8 { [%eval 9.71] [%clk 0:56:36] } 33. Qe4?? { [%eval -2.29] } { Blunder. fxg6 was best. } { [%clk 0:41:12] } 33... Rxe4 { [%eval -2.18] [%clk 0:57:05] } 34. fxg6 { [%eval -2.46] [%clk 0:40:38] } 34... fxg6 { [%eval -2.39] [%clk 0:57:34] } 35. Rf3 { [%eval -2.57] [%clk 0:39:29] } 35... Rc5 { [%eval -2.72] [%clk 0:57:45] } 36. Rh1 { [%eval -2.43] [%clk 0:32:36] } 36... Rh5 { [%eval -3.03] [%clk 0:57:44] } 37. Rxh5 { [%eval -2.69] [%clk 0:32:47] } 37... gxh5 { [%eval -2.71] [%clk 0:58:12] } 38. Ra3 { [%eval -2.39] [%clk 0:32:45] } 38... Rg4 { [%eval -3.64] [%clk 0:52:16] } 39. Rxa6 { [%eval -4.01] [%clk 0:30:21] } 39... Rxg3 { [%eval -4.15] [%clk 0:52:45] } 40. Ra5 { [%eval -4.52] [%clk 0:26:59] } 40... Rg5 { [%eval -4.75] [%clk 0:52:58] } 41. Ra3 { [%eval -4.74] [%clk 0:22:16] } 41... h4 { [%eval -4.63] [%clk 0:50:51] } 42. Re3 { [%eval -4.62] [%clk 0:22:31] } 42... Kf7 { [%eval -4.99] [%clk 0:48:14] } 43. Rf3+ { [%eval -5.09] [%clk 0:22:54] } 43... Kg6 { [%eval -5.15] [%clk 0:48:28] } 44. h7 { [%eval -5.59] [%clk 0:21:57] } 44... Rh5 { [%eval -5.67] [%clk 0:48:28] } 0-1