Event: Round 8: Lobanov, Sergei - Vaz, Ethan
Date: 2025-07-28
White: Lobanov, Sergei
WhiteTitle: GM
WhiteElo: 2548
Black: Vaz, Ethan
BlackTitle: IM
BlackElo: 2429
Result: 0-1
ECO: B90
Opening: Sicilian Defense: Najdorf Variation
Variant: Standard
TimeControl: 90+30

1. e4 { [%eval 0.18] [%clk 1:28:48] } 1... c5 { [%eval 0.25] [%clk 1:30:45] } 2. Nf3 { [%eval 0.2] [%clk 1:29:08] } 2... d6 { [%eval 0.31] [%clk 1:31:08] } 3. d4 { [%eval 0.22] [%clk 1:29:34] } 3... cxd4 { [%eval 0.19] [%clk 1:31:34] } 4. Nxd4 { [%eval 0.18] [%clk 1:30:00] } 4... Nf6 { [%eval 0.31] [%clk 1:32:00] } 5. Nc3 { [%eval 0.32] [%clk 1:30:23] } 5... a6 { [%eval 0.28] [%clk 1:32:26] } 6. Nb3 { [%eval 0.0] [%clk 1:30:19] } 6... e6 { [%eval 0.06] [%clk 1:32:27] } 7. a4 { [%eval 0.05] [%clk 1:30:32] } 7... Nc6 { [%eval 0.14] [%clk 1:24:51] } 8. Bd3 { [%eval 0.13] [%clk 1:30:38] } 8... b6 { [%eval 0.17] [%clk 1:16:33] } 9. O-O { [%eval 0.18] [%clk 1:30:09] } 9... Bb7 { [%eval 0.25] [%clk 1:16:41] } 10. Be3 { [%eval 0.24] [%clk 1:30:32] } 10... Be7 { [%eval 0.29] [%clk 1:11:12] } 11. f4 { [%eval 0.3] [%clk 1:29:23] } 11... h5?! { [%eval 0.86] } { Inaccuracy. Nb4 was best. } { [%clk 0:44:29] } 12. Qf3 { [%eval 0.79] [%clk 1:13:17] } 12... d5 { [%eval 0.75] [%clk 0:35:00] } 13. e5 { [%eval 0.82] [%clk 1:10:45] } 13... Ng4 { [%eval 0.55] [%clk 0:35:25] } 14. Bd2?! { [%eval 0.0] } { Inaccuracy. Bd4 was best. } { [%clk 1:10:15] } 14... Bc5+ { [%eval 0.0] [%clk 0:31:40] } 15. Nxc5 { [%eval -0.27] [%clk 0:57:36] } 15... bxc5 { [%eval -0.24] [%clk 0:32:02] } 16. h3?! { [%eval -0.82] } { Inaccuracy. a5 was best. } { [%clk 0:57:47] } 16... c4 { [%eval -1.25] [%clk 0:25:34] } 17. hxg4 { [%eval -1.12] [%clk 0:58:12] } 17... hxg4 { [%eval -0.83] [%clk 0:23:50] } 18. Qf2 { [%eval -1.28] [%clk 0:52:24] } 18... cxd3 { [%eval -1.29] [%clk 0:24:11] } 19. cxd3? { [%eval -2.71] } { Mistake. f5 was best. } { [%clk 0:52:52] } 19... Ne7 { [%eval -2.66] [%clk 0:21:33] } 20. g3?! { [%eval -3.96] } { Inaccuracy. f5 was best. } { [%clk 0:11:49] } 20... Nf5 { [%eval -3.72] [%clk 0:15:54] } 21. Kg2 { [%eval -3.36] [%clk 0:07:13] } 21... d4+ { [%eval -3.86] [%clk 0:14:21] } 22. Ne4 { [%eval -3.92] [%clk 0:07:41] } 22... Qd5 { [%eval -3.88] [%clk 0:14:33] } 23. Qe2 { [%eval -3.9] [%clk 0:07:45] } 23... Rh3 { [%eval -3.83] [%clk 0:13:35] } 24. Qxg4 { [%eval -4.16] [%clk 0:08:09] } 24... Rxg3+ { [%eval -4.06] [%clk 0:13:53] } 25. Qxg3 { [%eval -4.08] [%clk 0:08:37] } 25... Nxg3 { [%eval -3.9] [%clk 0:14:19] } 26. Kxg3 { [%eval -3.72] [%clk 0:09:04] } 26... O-O-O { [%eval -3.86] [%clk 0:13:03] } 27. Rf2 { [%eval -4.17] [%clk 0:04:52] } 27... Kb8 { [%eval -3.92] [%clk 0:09:56] } 28. b4?! { [%eval -5.23] } { Inaccuracy. Bb4 was best. } { [%clk 0:05:15] } 28... Rh8 { [%eval -5.72] [%clk 0:08:40] } 29. Nc5 { [%eval -7.48] [%clk 0:00:41] } 29... Qd8 { [%eval -7.21] [%clk 0:07:42] } 30. Nxb7 { [%eval -7.09] [%clk 0:00:40] } 30... Qh4+ { [%eval -7.11] [%clk 0:08:03] } 31. Kf3 { [%eval -6.98] [%clk 0:01:07] } 31... Qh3+ { [%eval -7.53] [%clk 0:07:13] } 32. Ke4 { [%eval -7.29] [%clk 0:00:58] } 32... Kxb7 { [%eval -7.03] [%clk 0:07:40] } 33. Raf1? { [%eval #-22] } { Checkmate is now unavoidable. Bc1 was best. } { [%clk 0:00:32] } 33... Rd8 { [%eval -9.4] [%clk 0:06:48] } 0-1