Event: Biel Chess Festival 2025 MTO
Site: Biel, Switzerland
Date: 2025-07-16
White: Dau Khuong Duy
WhiteTitle: IM
WhiteElo: 2456
Black: Sowray, Peter J
BlackTitle: FM
BlackElo: 2211
Result: 1-0
ECO: B06
Opening: Modern Defense: Standard Defense
Variant: Standard
TimeControl: 100 min 40 moves + 30 min Rest + 30 sec per move

1. e4 { [%eval 0.18] [%clk 1:40:53] } 1... g6 { [%eval 0.5] [%clk 1:40:52] } 2. d4 { [%eval 0.48] [%clk 1:40:54] } 2... Bg7 { [%eval 0.48] [%clk 1:41:14] } 3. Nc3 { [%eval 0.51] [%clk 1:40:18] } 3... d6 { [%eval 0.52] [%clk 1:41:37] } 4. Be3 { [%eval 0.46] [%clk 1:40:00] } 4... a6 { [%eval 0.5] [%clk 1:41:27] } 5. f4 { [%eval 0.39] [%clk 1:38:19] } 5... b5 { [%eval 0.39] [%clk 1:40:44] } 6. Nf3 { [%eval 0.25] [%clk 1:37:55] } 6... Bb7 { [%eval 0.43] [%clk 1:38:44] } 7. Bd3 { [%eval 0.34] [%clk 1:36:21] } 7... Nd7 { [%eval 0.31] [%clk 1:37:27] } 8. e5 { [%eval 0.5] [%clk 1:32:06] } 8... c5 { [%eval 0.6] [%clk 1:35:55] } 9. e6? { [%eval -0.61] } { Mistake. Be4 was best. } { [%clk 1:19:10] } 9... fxe6 { [%eval -0.44] [%clk 1:36:11] } 10. Ng5 { [%eval -0.34] [%clk 1:19:27] } 10... Nf8 { [%eval 0.1] [%clk 1:33:14] } 11. dxc5 { [%eval 0.15] [%clk 1:19:25] } 11... Nf6?! { [%eval 1.17] } { Inaccuracy. dxc5 was best. } { [%clk 1:25:15] } 12. O-O?! { [%eval 0.26] } { Inaccuracy. cxd6 was best. } { [%clk 1:17:43] } 12... b4?! { [%eval 1.28] } { Inaccuracy. dxc5 was best. } { [%clk 1:15:03] } 13. Nce4 { [%eval 1.28] [%clk 1:14:04] } 13... Nd5 { [%eval 1.47] [%clk 1:13:05] } 14. Bf2 { [%eval 1.7] [%clk 1:09:05] } 14... h6 { [%eval 1.55] [%clk 0:53:09] } 15. Nh3?! { [%eval 0.7] } { Inaccuracy. Nf3 was best. } { [%clk 1:05:25] } 15... Bxb2 { [%eval 0.69] [%clk 0:52:02] } 16. cxd6 { [%eval 0.77] [%clk 0:59:02] } 16... exd6 { [%eval 0.73] [%clk 0:54:21] } 17. Rb1 { [%eval 0.85] [%clk 0:58:36] } 17... Nc3 { [%eval 0.7] [%clk 0:52:09] } 18. Nxc3 { [%eval 0.7] [%clk 0:52:02] } 18... Bxc3 { [%eval 0.78] [%clk 0:52:24] } 19. Qg4 { [%eval 0.58] [%clk 0:52:16] } 19... Kd7?! { [%eval 1.22] } { Inaccuracy. Qc7 was best. } { [%clk 0:42:19] } 20. Be1 { [%eval 0.97] [%clk 0:47:48] } 20... Qb6+?! { [%eval 1.63] } { Inaccuracy. Qc7 was best. } { [%clk 0:35:32] } 21. Nf2 { [%eval 1.33] [%clk 0:47:42] } 21... Rc8? { [%eval 3.12] } { Mistake. Qc5 was best. } { [%clk 0:31:47] } 22. Bxc3 { [%eval 3.06] [%clk 0:45:36] } 22... Rxc3 { [%eval 3.01] [%clk 0:32:14] } 23. f5 { [%eval 3.07] [%clk 0:45:28] } 23... exf5 { [%eval 2.95] [%clk 0:31:31] } 24. Bxf5+ { [%eval 3.18] [%clk 0:44:55] } 24... Kc7 { [%eval 2.99] [%clk 0:30:29] } 25. Rxb4 { [%eval 2.91] [%clk 0:42:15] } 25... Qc5?! { [%eval 3.97] } { Inaccuracy. h5 was best. } { [%clk 0:27:39] } 26. Rfb1 { [%eval 3.99] [%clk 0:42:42] } 26... Bc6 { [%eval 4.64] [%clk 0:24:40] } 27. Be4 { [%eval 4.33] [%clk 0:41:32] } 27... h5 { [%eval 4.81] [%clk 0:19:59] } 28. Qf4 { [%eval 4.79] [%clk 0:39:36] } 28... Nd7 { [%eval 4.87] [%clk 0:20:03] } 29. Bxc6 { [%eval 4.92] [%clk 0:38:12] } 29... Qxc6 { [%eval 4.87] [%clk 0:14:33] } 30. Rb7+ { [%eval 4.91] [%clk 0:38:06] } 30... Kc8?! { [%eval 8.18] } { Inaccuracy. Kd8 was best. } { [%clk 0:12:55] } 31. Ne4 { [%eval 7.83] [%clk 0:37:28] } 31... Rf8 { [%eval 10.37] [%clk 0:11:42] } 32. Rb8+ { [%eval 9.47] [%clk 0:37:24] } 32... Kc7? { [%eval #2] } { Checkmate is now unavoidable. Nxb8 was best. } { [%clk 0:10:21] } 33. R1b7+ { [%eval #1] [%clk 0:37:38] } 33... Qxb7 { [%eval #1] [%clk 0:10:41] } 34. Qxd6# { [%clk 0:38:00] } 1-0