Event: Biel Chess Festival 2025 WT 1
Site: Biel, Switzerland
Date: 2025-07-25
White: Sadeh, David
Black: Niederberger, Lenny
BlackElo: 1714
Result: 0-1
ECO: B07
Opening: Pirc Defense: Kholmov System
Variant: Standard
TimeControl: 60' + 30'' / move

1. e4 { [%eval 0.18] [%clk 1:00:28] } 1... d6 { [%eval 0.43] [%clk 1:00:27] } 2. d4 { [%eval 0.43] [%clk 1:01:11] } 2... Nf6 { [%eval 0.43] [%clk 1:00:49] } 3. Nc3 { [%eval 0.38] [%clk 1:01:04] } 3... g6 { [%eval 0.63] [%clk 1:01:05] } 4. Bc4 { [%eval 0.17] [%clk 1:00:52] } 4... Bg7 { [%eval 0.15] [%clk 1:01:06] } 5. Nf3 { [%eval 0.19] [%clk 1:00:50] } 5... O-O { [%eval 0.15] [%clk 1:01:17] } 6. O-O { [%eval 0.17] [%clk 1:00:41] } 6... Nc6 { [%eval 0.39] [%clk 0:59:54] } 7. Be3 { [%eval 0.2] [%clk 1:00:42] } 7... e5 { [%eval 0.68] [%clk 1:00:07] } 8. dxe5 { [%eval 0.58] [%clk 1:00:40] } 8... Nxe5 { [%eval 0.57] [%clk 0:59:58] } 9. Nxe5 { [%eval 0.61] [%clk 1:00:54] } 9... dxe5 { [%eval 0.66] [%clk 1:00:21] } 10. Qc1 { [%eval 0.2] [%clk 0:58:46] } 10... Qe7 { [%eval 0.11] [%clk 0:59:17] } 11. Bg5 { [%eval 0.08] [%clk 0:58:47] } 11... c6 { [%eval 0.11] [%clk 0:56:37] } 12. Qe3 { [%eval 0.1] [%clk 0:55:24] } 12... Be6 { [%eval 0.08] [%clk 0:52:41] } 13. Bxe6 { [%eval 0.14] [%clk 0:53:49] } 13... Qxe6 { [%eval 0.13] [%clk 0:50:15] } 14. Rad1 { [%eval 0.11] [%clk 0:52:36] } 14... h6 { [%eval 0.32] [%clk 0:51:26] } 15. Bxf6 { [%eval 0.29] [%clk 0:50:56] } 15... Qxf6 { [%eval 0.31] [%clk 0:50:24] } 16. Rd2 { [%eval 0.0] [%clk 0:49:01] } 16... Rfd8 { [%eval 0.07] [%clk 0:46:43] } 17. Rfd1 { [%eval 0.05] [%clk 0:48:20] } 17... b6 { [%eval 0.0] [%clk 0:44:33] } 18. Qf3 { [%eval 0.02] [%clk 0:45:46] } 18... Rxd2 { [%eval -0.01] [%clk 0:43:09] } 19. Rxd2 { [%eval 0.05] [%clk 0:45:49] } 19... Rd8 { [%eval -0.06] [%clk 0:40:16] } 20. Rxd8+ { [%eval -0.04] [%clk 0:45:17] } 20... Qxd8 { [%eval 0.01] [%clk 0:40:37] } 21. Qh3 { [%eval -0.19] [%clk 0:44:28] } 21... Qd2 { [%eval -0.32] [%clk 0:38:52] } 22. Qc8+?? { [%eval -3.53] } { Blunder. Qd3 was best. } { [%clk 0:43:36] } 22... Bf8 { [%eval -3.48] [%clk 0:36:00] } 23. h3 { [%eval -4.06] [%clk 0:41:50] } 23... Qxc2 { [%eval -3.73] [%clk 0:26:11] } 24. Qxc6 { [%eval -3.53] [%clk 0:41:19] } 24... Qxb2?? { [%eval -1.51] } { Blunder. Qc1+ was best. } { [%clk 0:22:23] } 25. Qc4?? { [%eval -5.35] } { Blunder. Nd5 was best. } { [%clk 0:40:26] } 25... Qc1+ { [%eval -5.57] [%clk 0:22:39] } 26. Kh2 { [%eval -5.51] [%clk 0:39:59] } 26... Bc5 { [%eval -5.35] [%clk 0:20:01] } 27. Qb3 { [%eval -5.47] [%clk 0:37:46] } 27... Bxf2 { [%eval -5.51] [%clk 0:15:22] } 28. Qd1?? { [%eval #-26] } { Checkmate is now unavoidable. Ne2 was best. } { [%clk 0:37:33] } 28... Qxc3 { [%eval #-32] [%clk 0:14:05] } 29. Qd8+ { [%eval #-30] [%clk 0:36:39] } 29... Kg7 { [%eval -24.27] [%clk 0:14:59] } 30. Qe7?! { [%eval #-2] } { Checkmate is now unavoidable. Qd1 was best. } { [%clk 0:36:05] } 30... Qa1 { [%eval #-4] [%clk 0:14:34] } 31. Qxe5+ { [%eval #-3] [%clk 0:34:44] } 31... Qxe5+ { [%eval #-2] [%clk 0:14:50] } 32. Kh1 { [%clk 0:34:52] } 32... Qa1+ { [%clk 0:14:42] } 33. Kh2 { [%clk 0:34:52] } 33... Qg1# { [%clk 0:14:57] } 0-1