Event: Biel Chess Festival 2025 WT 1
Site: Biel, Switzerland
Date: 2025-07-22
White: Niederberger, Lenny
WhiteElo: 1714
Black: Cloete, Willem Francois
BlackElo: 1567
Result: 0-1
ECO: A05
Opening: King's Indian Attack: Symmetrical Defense
Variant: Standard
TimeControl: 60' + 30'' / move

1. Nf3 { [%eval 0.1] [%clk 1:00:57] } 1... Nf6 { [%eval 0.18] [%clk 1:00:52] } 2. g3 { [%eval 0.11] [%clk 1:01:23] } 2... g6 { [%eval 0.21] [%clk 1:01:13] } 3. Bg2 { [%eval 0.13] [%clk 1:01:49] } 3... Bg7 { [%eval 0.23] [%clk 1:01:38] } 4. O-O { [%eval 0.16] [%clk 1:02:13] } 4... O-O { [%eval 0.21] [%clk 1:02:03] } 5. d4 { [%eval 0.12] [%clk 1:02:39] } 5... d6 { [%eval 0.31] [%clk 1:02:18] } 6. Nc3 { [%eval 0.19] [%clk 1:02:13] } 6... Nbd7 { [%eval 0.35] [%clk 1:00:29] } 7. e4 { [%eval 0.21] [%clk 1:02:16] } 7... c6 { [%eval 0.56] [%clk 0:57:05] } 8. Be3 { [%eval 0.1] [%clk 1:02:14] } 8... Ng4 { [%eval 0.4] [%clk 0:54:32] } 9. Bd2?! { [%eval -0.25] } { Inaccuracy. Bc1 was best. } { [%clk 1:02:18] } 9... c5?! { [%eval 0.34] } { Inaccuracy. e5 was best. } { [%clk 0:50:07] } 10. dxc5 { [%eval 0.13] [%clk 1:02:06] } 10... Nxc5 { [%eval 0.19] [%clk 0:48:53] } 11. Re1 { [%eval 0.19] [%clk 0:57:36] } 11... Bd7 { [%eval 0.24] [%clk 0:43:36] } 12. h3 { [%eval 0.13] [%clk 0:56:27] } 12... Ne5 { [%eval 0.1] [%clk 0:42:49] } 13. Nxe5 { [%eval 0.13] [%clk 0:55:33] } 13... Bxe5 { [%eval 0.18] [%clk 0:42:41] } 14. Bh6 { [%eval -0.19] [%clk 0:54:44] } 14... Re8 { [%eval -0.14] [%clk 0:42:25] } 15. f4 { [%eval -0.47] [%clk 0:46:49] } 15... Bh8 { [%eval -0.33] [%clk 0:41:04] } 16. e5 { [%eval -0.82] [%clk 0:41:30] } 16... dxe5 { [%eval -0.36] [%clk 0:37:20] } 17. fxe5 { [%eval -0.24] [%clk 0:39:37] } 17... Qc8 { [%eval -0.31] [%clk 0:31:26] } 18. Kh2 { [%eval -0.3] [%clk 0:34:37] } 18... Bc6 { [%eval -0.36] [%clk 0:26:28] } 19. Bxc6 { [%eval -0.39] [%clk 0:29:43] } 19... bxc6 { [%eval -0.36] [%clk 0:24:47] } 20. Qf3 { [%eval -0.33] [%clk 0:29:28] } 20... Bg7 { [%eval -0.34] [%clk 0:17:36] } 21. Bxg7 { [%eval -0.38] [%clk 0:28:47] } 21... Kxg7 { [%eval -0.35] [%clk 0:17:45] } 22. Ne4 { [%eval -0.33] [%clk 0:26:48] } 22... Nxe4 { [%eval -0.17] [%clk 0:17:14] } 23. Qxe4 { [%eval -0.27] [%clk 0:26:56] } 23... Rb8 { [%eval -0.26] [%clk 0:15:22] } 24. b3 { [%eval -0.23] [%clk 0:24:20] } 24... Rd8 { [%eval -0.24] [%clk 0:13:39] } 25. Rad1 { [%eval -0.59] [%clk 0:22:27] } 25... Qe6 { [%eval -0.55] [%clk 0:10:19] } 26. Rd3 { [%eval -0.53] [%clk 0:20:47] } 26... Rd7?! { [%eval 0.27] } { Inaccuracy. Rxd3 was best. } { [%clk 0:09:18] } 27. Rxd7 { [%eval 0.25] [%clk 0:19:07] } 27... Qxd7 { [%eval 0.35] [%clk 0:09:34] } 28. e6 { [%eval 0.42] [%clk 0:19:00] } 28... Qd5?! { [%eval 1.02] } { Inaccuracy. Qd6 was best. } { [%clk 0:06:10] } 29. exf7 { [%eval 0.81] [%clk 0:10:36] } 29... Qxe4 { [%eval 0.94] [%clk 0:05:59] } 30. Rxe4 { [%eval 0.87] [%clk 0:10:53] } 30... Kxf7 { [%eval 0.89] [%clk 0:06:20] } 31. Kg2 { [%eval 0.95] [%clk 0:09:18] } 31... Rd8 { [%eval 0.98] [%clk 0:05:26] } 32. Kf3?! { [%eval 0.41] } { Inaccuracy. Rc4 was best. } { [%clk 0:09:21] } 32... Kf6?! { [%eval 1.32] } { Inaccuracy. Rd5 was best. } { [%clk 0:04:44] } 33. Rc4 { [%eval 1.33] [%clk 0:07:39] } 33... Rd6 { [%eval 1.43] [%clk 0:04:10] } 34. Ke3 { [%eval 1.27] [%clk 0:07:15] } 34... Ke6 { [%eval 1.42] [%clk 0:03:42] } 35. Rh4 { [%eval 1.16] [%clk 0:06:19] } 35... h5 { [%eval 0.95] [%clk 0:03:32] } 36. Rd4?! { [%eval 0.12] } { Inaccuracy. Re4+ was best. } { [%clk 0:03:55] } 36... Rd5 { [%eval 0.1] [%clk 0:03:22] } 37. c4 { [%eval 0.0] [%clk 0:03:08] } 37... Re5+ { [%eval 0.0] [%clk 0:02:31] } 38. Re4 { [%eval 0.0] [%clk 0:03:17] } 38... Kd6?? { [%eval 4.21] } { Blunder. c5 was best. } { [%clk 0:02:24] } 39. Rxe5 { [%eval 4.12] [%clk 0:03:03] } 39... Kxe5 { [%eval 3.61] [%clk 0:02:52] } 40. a4?? { [%eval -4.99] } { Blunder. b4 was best. } { [%clk 0:02:55] } 40... a5 { [%eval -5.04] [%clk 0:02:36] } 41. Kd3 { [%eval -4.88] [%clk 0:02:21] } 41... g5 { [%eval -4.82] [%clk 0:02:47] } 42. h4?! { [%eval -7.09] } { Inaccuracy. b4 was best. } { [%clk 0:01:26] } 42... g4?? { [%eval 0.0] } { Blunder. gxh4 was best. } { [%clk 0:02:55] } 43. Ke3 { [%eval 0.0] [%clk 0:00:53] } 43... c5 { [%eval 0.0] [%clk 0:03:01] } 44. Kd3 { [%eval 0.0] [%clk 0:01:11] } 44... Kf5 { [%eval 0.0] [%clk 0:03:07] } 45. b4?? { [%eval #-22] } { Checkmate is now unavoidable. Ke3 was best. } { [%clk 0:00:38] } 45... cxb4 { [%eval #-23] [%clk 0:03:29] } 46. c5 { [%eval #-20] [%clk 0:00:37] } 46... Ke5 { [%eval #-21] [%clk 0:03:51] } 47. Kc4 { [%eval #-38] [%clk 0:00:54] } 47... Ke6 { [%eval #-18] [%clk 0:04:09] } 48. Kd4 { [%eval #-18] [%clk 0:01:12] } 48... Kd7 { [%eval #-19] [%clk 0:04:24] } 49. Kc4 { [%eval #-17] [%clk 0:01:08] } 49... Kc7 { [%eval #-16] [%clk 0:04:50] } 0-1