Event: Biel Chess Festival 2025
Date: 2025-07-21
White: Perego, Jonas Gion
WhiteElo: 1792
Black: Zimmermann, Stefan SUI
BlackElo: 1714
Result: 1-0
ECO: B01
Opening: Scandinavian Defense: Bronstein Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:55] } 1... d5 { [%eval 0.54] [%clk 1:30:47] } 2. exd5 { [%eval 0.51] [%clk 1:31:19] } 2... Qxd5 { [%eval 0.52] [%clk 1:31:05] } 3. Nc3 { [%eval 0.47] [%clk 1:31:42] } 3... Qd6 { [%eval 0.53] [%clk 1:31:19] } 4. Nf3 { [%eval 0.47] [%clk 1:32:01] } 4... Nf6 { [%eval 0.57] [%clk 1:31:39] } 5. d4 { [%eval 0.6] [%clk 1:32:17] } 5... a6 { [%eval 1.07] [%clk 1:32:02] } 6. Be2?! { [%eval 0.35] } { Inaccuracy. g3 was best. } { [%clk 1:32:06] } 6... Nc6 { [%eval 0.35] [%clk 1:32:18] } 7. O-O { [%eval 0.41] [%clk 1:31:11] } 7... Bf5 { [%eval 0.39] [%clk 1:32:22] } 8. Be3 { [%eval 0.32] [%clk 1:24:13] } 8... e6 { [%eval 0.3] [%clk 1:30:58] } 9. Qd2 { [%eval 0.3] [%clk 1:19:59] } 9... O-O-O { [%eval 0.38] [%clk 1:28:38] } 10. Rfd1 { [%eval 0.31] [%clk 1:17:45] } 10... h6 { [%eval 0.68] [%clk 1:28:08] } 11. a3 { [%eval 0.83] [%clk 1:10:36] } 11... g5 { [%eval 0.84] [%clk 1:24:10] } 12. b4 { [%eval 0.82] [%clk 1:03:52] } 12... Ng4? { [%eval 2.38] } { Mistake. Ne4 was best. } { [%clk 1:17:19] } 13. b5 { [%eval 2.25] [%clk 1:00:53] } 13... Nb8 { [%eval 2.67] [%clk 1:15:12] } 14. bxa6 { [%eval 2.79] [%clk 0:55:51] } 14... Nxa6 { [%eval 2.94] [%clk 1:15:24] } 15. Nb5 { [%eval 2.86] [%clk 0:56:00] } 15... Qb6 { [%eval 2.8] [%clk 1:07:22] } 16. Rdb1 { [%eval 2.66] [%clk 0:43:03] } 16... Nxe3 { [%eval 2.98] [%clk 0:54:47] } 17. fxe3 { [%eval 2.93] [%clk 0:42:53] } 17... Nc5?! { [%eval 4.26] } { Inaccuracy. Bg7 was best. } { [%clk 0:42:26] } 18. Ne5 { [%eval 4.0] [%clk 0:38:38] } 18... Ne4 { [%eval 3.86] [%clk 0:38:11] } 19. Qe1 { [%eval 4.03] [%clk 0:38:14] } 19... Rh7 { [%eval 4.46] [%clk 0:36:57] } 20. Nd6+ { [%eval 3.72] [%clk 0:29:29] } 20... Qxd6? { [%eval 6.77] } { Mistake. Nxd6 was best. } { [%clk 0:24:23] } 21. Qa5 { [%eval 6.75] [%clk 0:29:55] } 21... Kb8?? { [%eval #4] } { Checkmate is now unavoidable. Qxe5 was best. } { [%clk 0:20:30] } 22. Rxb7+ { [%eval #3] [%clk 0:30:09] } 22... Kxb7 { [%eval #3] [%clk 0:20:42] } 23. Rb1+ { [%eval #2] [%clk 0:30:33] } 23... Qb6 { [%eval #2] [%clk 0:20:45] } 24. Rxb6+? { [%eval 7.79] } { Lost forced checkmate sequence. Qa6+ was best. } { [%clk 0:30:58] } 24... cxb6 { [%eval 7.81] [%clk 0:21:02] } 25. Qa6+ { [%eval 6.58] [%clk 0:31:12] } 25... Kb8?? { [%eval #4] } { Checkmate is now unavoidable. Kc7 was best. } { [%clk 0:18:33] } 26. Qxb6+ { [%eval #3] [%clk 0:31:26] } 26... Ka8 { [%eval #3] [%clk 0:18:47] } 27. Nc6 { [%eval #2] [%clk 0:30:22] } 1-0