Event: Biel Chess Festival 2025 Swiss CHampionship 960
Site: Biel, Switzerland
Date: 2025-07-12
White: Portmann, Daniel
WhiteElo: 1891
Black: Schaefer, Gion
BlackElo: 1812
Result: 1-0
Variant: Fischerandom
TimeControl: 15 min + 5 sec per move

1. d4 { [%eval 0.19] [%clk 0:14:53] } 1... d5 { [%eval 0.38] [%clk 0:14:42] } 2. g4 { [%eval 0.27] [%clk 0:14:43] } 2... Nb6 { [%eval 0.19] [%clk 0:14:37] } 3. Ne3?! { [%eval -0.66] } { Inaccuracy. Nb3 was best. } { [%clk 0:14:32] } 3... e6 { [%eval -0.69] [%clk 0:14:24] } 4. Nb3 { [%eval -0.63] [%clk 0:13:59] } 4... h5?! { [%eval 0.28] } { Inaccuracy. g5 was best. } { [%clk 0:13:39] } 5. h3?! { [%eval -0.78] } { Inaccuracy. g5 was best. } { [%clk 0:13:31] } 5... hxg4 { [%eval -0.43] [%clk 0:12:45] } 6. hxg4 { [%eval -0.5] [%clk 0:13:30] } 6... Ng6 { [%eval -0.39] [%clk 0:12:48] } 7. Qf3 { [%eval -0.66] [%clk 0:13:30] } 7... Qh4 { [%eval -0.18] [%clk 0:11:54] } 8. Ng2? { [%eval -1.6] } { Mistake. Nf1 was best. } { [%clk 0:13:23] } 8... Qg5+? { [%eval -0.03] } { Mistake. Qh2 was best. } { [%clk 0:11:55] } 9. Bd2 { [%eval 0.0] [%clk 0:13:27] } 9... Qf6 { [%eval -0.07] [%clk 0:11:54] } 10. Qg3 { [%eval -0.1] [%clk 0:12:46] } 10... Nc4 { [%eval -0.06] [%clk 0:11:55] } 11. g5 { [%eval -0.21] [%clk 0:12:38] } 11... Qe7 { [%eval -0.23] [%clk 0:11:36] } 12. f4 { [%eval -0.58] [%clk 0:12:07] } 12... Nxd2 { [%eval -0.12] [%clk 0:11:31] } 13. Nxd2 { [%eval -0.31] [%clk 0:12:10] } 13... Rh8 { [%eval 0.2] [%clk 0:11:13] } 14. e3 { [%eval -0.12] [%clk 0:12:08] } 14... Qd6 { [%eval 0.0] [%clk 0:10:57] } 15. Be2 { [%eval 0.0] [%clk 0:11:56] } 15... Bd7 { [%eval 0.49] [%clk 0:10:03] } 16. O-O-O { [%eval 0.44] [%clk 0:11:51] } 16... a5?! { [%eval 1.0] } { Inaccuracy. c5 was best. } { [%clk 0:09:38] } 17. Kb1 { [%eval 0.59] [%clk 0:11:32] } 17... a4 { [%eval 0.8] [%clk 0:09:42] } 18. e4?! { [%eval -0.26] } { Inaccuracy. a3 was best. } { [%clk 0:10:57] } 18... Qb6?? { [%eval 1.57] } { Blunder. a3 was best. } { [%clk 0:08:46] } 19. Qf2?? { [%eval -0.38] } { Blunder. exd5 was best. } { [%clk 0:10:27] } 19... a3 { [%eval -0.37] [%clk 0:08:34] } 20. Nb3 { [%eval -0.46] [%clk 0:10:30] } 20... axb2 { [%eval -0.41] [%clk 0:07:57] } 21. e5?? { [%eval -2.52] } { Blunder. exd5 was best. } { [%clk 0:09:35] } 21... Rh2?? { [%eval -0.25] } { Blunder. Ra8 was best. } { [%clk 0:08:15] } 22. Rh1? { [%eval -1.7] } { Mistake. Qg3 was best. } { [%clk 0:09:33] } 22... Rxh1 { [%eval -1.83] [%clk 0:07:33] } 23. Rxh1 { [%eval -1.75] [%clk 0:09:37] } 23... Ra8 { [%eval -1.8] [%clk 0:07:08] } 24. Kxb2 { [%eval -1.71] [%clk 0:09:10] } 24... Qa7 { [%eval -1.71] [%clk 0:07:04] } 25. Kc3?! { [%eval -2.67] } { Inaccuracy. a4 was best. } { [%clk 0:08:06] } 25... Be7?! { [%eval -1.43] } { Inaccuracy. c5 was best. } { [%clk 0:05:32] } 26. Ra1? { [%eval -3.05] } { Mistake. Bd3 was best. } { [%clk 0:07:51] } 26... Qa3 { [%eval -3.07] [%clk 0:05:28] } 27. Kd2 { [%eval -3.42] [%clk 0:07:35] } 27... Bb4+ { [%eval -3.57] [%clk 0:05:27] } 28. Ke3 { [%eval -3.36] [%clk 0:07:39] } 28... Qb2?! { [%eval -2.25] } { Inaccuracy. c5 was best. } { [%clk 0:05:17] } 29. Bd3 { [%eval -2.39] [%clk 0:06:59] } 29... Bc3 { [%eval -1.8] [%clk 0:05:03] } 30. Qf1 { [%eval -2.39] [%clk 0:06:41] } 30... Rxa2?? { [%eval -0.06] } { Blunder. Ra4 was best. } { [%clk 0:04:17] } 31. Rxa2 { [%eval -0.05] [%clk 0:06:43] } 31... Qxa2 { [%eval 0.0] [%clk 0:04:17] } 32. Kf3?? { [%eval -1.69] } { Blunder. f5 was best. } { [%clk 0:06:34] } 32... Qa7?? { [%eval 2.39] } { Blunder. b6 was best. } { [%clk 0:03:46] } 33. Bxg6 { [%eval 2.49] [%clk 0:06:33] } 33... fxg6 { [%eval 2.57] [%clk 0:03:49] } 34. Qd3 { [%eval 2.5] [%clk 0:06:36] } 34... Bb2? { [%eval 4.04] } { Mistake. Bb4 was best. } { [%clk 0:03:38] } 35. Qxg6 { [%eval 3.97] [%clk 0:06:36] } 35... Bxd4 { [%eval 3.96] [%clk 0:03:40] } 36. Qxg7 { [%eval 4.07] [%clk 0:06:40] } 36... b6?! { [%eval 5.76] } { Inaccuracy. Be8 was best. } { [%clk 0:03:34] } 37. Nxd4 { [%eval 5.51] [%clk 0:06:31] } 37... Qa4 { [%eval 5.57] [%clk 0:03:10] } 38. Nb3 { [%eval 4.5] [%clk 0:06:21] } 38... Qe4+ { [%eval 4.73] [%clk 0:03:31] } 39. Kg3 { [%eval 4.58] [%clk 0:06:25] } 39... Qxc2 { [%eval 5.41] [%clk 0:03:30] } 40. Qf8+ { [%eval 4.8] [%clk 0:06:28] } 40... Kb7 { [%eval 4.71] [%clk 0:03:32] } 41. Qb4?! { [%eval 3.08] } { Inaccuracy. Nd4 was best. } { [%clk 0:06:31] } 41... Qd3+ { [%eval 3.05] [%clk 0:03:29] } 42. Kg4 { [%eval 2.98] [%clk 0:06:28] } 42... Qe2+ { [%eval 2.89] [%clk 0:03:30] } 43. Kg3 { [%eval 2.79] [%clk 0:06:30] } 43... Bc6?? { [%eval 5.71] } { Blunder. Qd3+ was best. } { [%clk 0:03:13] } 44. Nc5+?! { [%eval 4.39] } { Inaccuracy. Na5+ was best. } { [%clk 0:06:32] } 44... Kc8 { [%eval 5.52] [%clk 0:03:14] } 45. Nxe6 { [%eval 5.5] [%clk 0:06:15] } 45... d4?! { [%eval 7.96] } { Inaccuracy. Qd3+ was best. } { [%clk 0:03:01] } 46. Qf8+ { [%eval 7.23] [%clk 0:06:15] } 46... Kb7 { [%eval 7.34] [%clk 0:03:05] } 47. Nd8+ { [%eval 7.25] [%clk 0:06:19] } 47... Ka6 { [%eval 7.14] [%clk 0:02:54] } 48. Nxc6 { [%eval 6.97] [%clk 0:06:22] } 48... Qd3+ { [%eval 7.31] [%clk 0:02:53] } 49. Kh2 { [%eval 7.28] [%clk 0:06:24] } 49... Qh7+ { [%eval 7.25] [%clk 0:02:54] } 50. Kg3 { [%eval 6.77] [%clk 0:06:18] } 50... Qd3+ { [%eval 6.9] [%clk 0:02:57] } 51. Kh4 { [%eval 6.57] [%clk 0:05:41] } 51... Qf3?? { [%eval #9] } { Checkmate is now unavoidable. Qd2 was best. } { [%clk 0:02:46] } 52. Qa8+ { [%eval #8] [%clk 0:05:41] } 52... Kb5 { [%eval #8] [%clk 0:02:50] } 53. Nxd4+ { [%eval #7] [%clk 0:05:45] } 1-0