Event: Round 9: Dai, Changren - Vaz, Ethan
Date: 2024-08-24
White: Dai, Changren
WhiteTitle: GM
WhiteElo: 2532
Black: Vaz, Ethan
BlackTitle: IM
BlackElo: 2392
Result: 0-1
ECO: E73
Opening: King's Indian Defense: Semi-Averbakh System
Variant: Standard

1. d4 { [%eval 0.16] [%clk 1:30:53] } 1... Nf6 { [%eval 0.17] [%clk 1:30:50] } 2. c4 { [%eval 0.17] [%clk 1:31:18] } 2... g6 { [%eval 0.25] [%clk 1:31:14] } 3. Nc3 { [%eval 0.21] [%clk 1:31:44] } 3... Bg7 { [%eval 0.51] [%clk 1:31:38] } 4. e4 { [%eval 0.56] [%clk 1:32:07] } 4... d6 { [%eval 0.51] [%clk 1:32:06] } 5. Be2 { [%eval 0.43] [%clk 1:31:59] } 5... O-O { [%eval 0.58] [%clk 1:32:15] } 6. Be3 { [%eval 0.5] [%clk 1:32:26] } 6... e5 { [%eval 0.59] [%clk 1:31:53] } 7. d5 { [%eval 0.6] [%clk 1:32:21] } 7... Na6 { [%eval 0.62] [%clk 1:31:53] } 8. h4 { [%eval 0.72] [%clk 1:29:58] } 8... Nc5 { [%eval 0.75] [%clk 1:28:38] } 9. Qc2 { [%eval 0.67] [%clk 1:30:24] } 9... c6 { [%eval 0.69] [%clk 1:28:16] } 10. Bxc5 { [%eval 0.7] [%clk 1:26:34] } 10... dxc5 { [%eval 0.57] [%clk 1:28:22] } 11. Nf3 { [%eval 0.47] [%clk 1:25:53] } 11... Bg4 { [%eval 0.48] [%clk 1:13:41] } 12. O-O-O?! { [%eval -0.46] } { Inaccuracy. Nd2 was best. } { [%clk 1:24:31] } 12... cxd5 { [%eval -0.51] [%clk 1:08:48] } 13. cxd5 { [%eval -0.37] [%clk 1:24:07] } 13... Qd6 { [%eval -0.43] [%clk 1:06:05] } 14. Kb1 { [%eval -0.51] [%clk 1:20:27] } 14... a6 { [%eval -0.48] [%clk 1:02:03] } 15. Nd2 { [%eval -0.83] [%clk 1:20:40] } 15... b5 { [%eval -0.51] [%clk 0:53:11] } 16. Nb3?! { [%eval -1.3] } { Inaccuracy. Bxg4 was best. } { [%clk 1:14:40] } 16... Bd7 { [%eval -1.29] [%clk 0:41:43] } 17. Na5 { [%eval -1.43] [%clk 1:14:57] } 17... c4 { [%eval -1.25] [%clk 0:35:02] } 18. h5 { [%eval -1.2] [%clk 1:09:23] } 18... Rfc8 { [%eval -1.28] [%clk 0:33:48] } 19. Nc6 { [%eval -1.3] [%clk 1:05:37] } 19... b4? { [%eval -0.04] } { Mistake. Bxc6 was best. } { [%clk 0:31:11] } 20. Na4 { [%eval 0.0] [%clk 0:59:30] } 20... Nxe4 { [%eval 0.02] [%clk 0:22:47] } 21. Bxc4 { [%eval 0.06] [%clk 0:59:33] } 21... Nc5 { [%eval 0.06] [%clk 0:22:28] } 22. Nxc5 { [%eval 0.06] [%clk 0:53:55] } 22... Qxc5 { [%eval 0.0] [%clk 0:22:56] } 23. hxg6 { [%eval 0.0] [%clk 0:53:59] } 23... hxg6 { [%eval 0.0] [%clk 0:22:50] } 24. Bd3 { [%eval 0.02] [%clk 0:49:27] } 24... Qd6 { [%eval 0.1] [%clk 0:22:14] } 25. Rc1?! { [%eval -0.96] } { Inaccuracy. f3 was best. } { [%clk 0:49:17] } 25... e4? { [%eval 0.19] } { Mistake. a5 was best. } { [%clk 0:18:06] } 26. Bxe4 { [%eval 0.21] [%clk 0:48:46] } 26... Re8 { [%eval 0.26] [%clk 0:18:14] } 27. f3 { [%eval 0.22] [%clk 0:47:53] } 27... a5 { [%eval 0.41] [%clk 0:15:25] } 28. Qc5 { [%eval 0.0] [%clk 0:46:54] } 28... Qf6 { [%eval 0.0] [%clk 0:14:43] } 29. Rc2 { [%eval -0.24] [%clk 0:47:09] } 29... a4? { [%eval 0.98] } { Mistake. b3 was best. } { [%clk 0:10:55] } 30. Qxb4 { [%eval 1.2] [%clk 0:40:35] } 30... a3 { [%eval 0.88] [%clk 0:10:39] } 31. Qc3?! { [%eval 0.0] } { Inaccuracy. g4 was best. } { [%clk 0:29:46] } 31... Qg5 { [%eval 0.0] [%clk 0:04:07] } 32. Qc5 { [%eval -0.42] [%clk 0:26:53] } 32... axb2 { [%eval -0.35] [%clk 0:02:29] } 33. Rd1 { [%eval -0.9] [%clk 0:25:43] } 33... Bf6?! { [%eval 0.0] } { Inaccuracy. Ra4 was best. } { [%clk 0:00:54] } 34. a3?? { [%eval -2.39] } { Blunder. d6 was best. } { [%clk 0:21:26] } 34... Kg7 { [%eval -2.31] [%clk 0:01:01] } 35. Ka2 { [%eval -2.35] [%clk 0:20:10] } 35... Ra4 { [%eval -2.15] [%clk 0:00:56] } 36. Rd3?? { [%eval -5.03] } { Blunder. Rc4 was best. } { [%clk 0:18:52] } 36... Rea8?? { [%eval -1.7] } { Blunder. Bxc6 was best. } { [%clk 0:00:47] } 37. Rb3 { [%eval -1.66] [%clk 0:17:45] } 37... Qh4?! { [%eval -0.68] } { Inaccuracy. Qg3 was best. } { [%clk 0:00:36] } 38. Qg1?? { [%eval -3.38] } { Blunder. Rcxb2 was best. } { [%clk 0:17:29] } 38... Qf4 { [%eval -2.73] [%clk 0:00:37] } 39. Nb4? { [%eval -4.66] } { Mistake. Qc5 was best. } { [%clk 0:15:08] } 39... Qd6 { [%eval -4.43] [%clk 0:00:36] } 40. Qe1?! { [%eval -5.69] } { Inaccuracy. Rcxb2 was best. } { [%clk 0:15:29] } 40... Bb5 { [%eval -5.16] [%clk 0:00:46] } 41. g4 { [%eval -5.0] [%clk 0:14:32] } 41... Qb6?! { [%eval -3.88] } { Inaccuracy. b1=B+ was best. } { [%clk 0:00:51] } 42. Rcc3 { [%eval -3.97] [%clk 0:13:24] } 42... Qa5?! { [%eval -2.55] } { Inaccuracy. Qd6 was best. } { [%clk 0:00:47] } 43. Kb1? { [%eval -4.54] } { Mistake. Nc2 was best. } { [%clk 0:11:06] } 43... Rxb4 { [%eval -4.43] [%clk 0:00:55] } 44. g5?! { [%eval -6.71] } { Inaccuracy. Rxb4 was best. } { [%clk 0:10:21] } 44... Rxb3 { [%eval -6.4] [%clk 0:00:45] } 45. gxf6+ { [%eval -6.31] [%clk 0:10:44] } 45... Kg8 { [%eval -5.92] [%clk 0:01:03] } 46. Rc8+?? { [%eval #-16] } { Checkmate is now unavoidable. Bxg6 was best. } { [%clk 0:10:38] } 46... Rxc8 { [%eval #-15] [%clk 0:01:28] } 47. Qxa5 { [%eval #-15] [%clk 0:11:04] } 47... Rc1+ { [%eval #-15] [%clk 0:01:48] } 48. Ka2 { [%eval #-18] [%clk 0:11:33] } 48... b1=Q+ { [%eval #-18] [%clk 0:01:53] } 49. Bxb1 { [%eval #-19] [%clk 0:11:55] } 49... Rbxb1 { [%eval #-20] [%clk 0:01:49] } 50. Qd8+ { [%clk 0:10:20] } 50... Kh7 { [%clk 0:02:17] } 0-1