Event: Round 8: Mattias Bosveld - Leon Niemeijer
Date: 2023-10-27
White: Mattias Bosveld
WhiteElo: 1442
Black: Leon Niemeijer
BlackElo: 1824
Result: 0-1
ECO: E62
Opening: King's Indian Defense: Fianchetto Variation, Uhlmann-Szabo System
Variant: Standard

1. d4 { [%eval 0.0] [%clk 1:30:58] } 1... Nf6 { [%eval 0.28] [%clk 1:30:41] } 2. c4 { [%eval 0.16] [%clk 1:31:24] } 2... g6 { [%eval 0.3] [%clk 1:31:06] } 3. Nc3 { [%eval 0.31] [%clk 1:31:46] } 3... Bg7 { [%eval 0.7] [%clk 1:31:23] } 4. Nf3 { [%eval 0.29] [%clk 1:32:03] } 4... O-O { [%eval 0.63] [%clk 1:31:24] } 5. g3 { [%eval 0.27] [%clk 1:32:28] } 5... d6 { [%eval 0.25] [%clk 1:31:04] } 6. Bg2 { [%eval 0.27] [%clk 1:32:53] } 6... Nc6 { [%eval 0.58] [%clk 1:31:20] } 7. O-O { [%eval 0.32] [%clk 1:31:55] } 7... e5 { [%eval 0.37] [%clk 1:31:35] } 8. d5 { [%eval 0.45] [%clk 1:30:12] } 8... Nb8 { [%eval 0.4] [%clk 1:30:27] } 9. e4 { [%eval 0.4] [%clk 1:30:19] } 9... a5 { [%eval 0.4] [%clk 1:30:36] } 10. a4?! { [%eval -0.47] } { Inaccuracy. c5 was best. } { [%clk 1:26:55] } 10... Na6 { [%eval -0.51] [%clk 1:30:27] } 11. Bd2 { [%eval -0.61] [%clk 1:20:53] } 11... Nc5 { [%eval -0.47] [%clk 1:22:05] } 12. Qc2 { [%eval -0.4] [%clk 1:16:30] } 12... Nh5 { [%eval -0.07] [%clk 1:06:33] } 13. Ne1 { [%eval -0.25] [%clk 1:11:54] } 13... f5 { [%eval -0.3] [%clk 1:04:20] } 14. Nd3 { [%eval -0.2] [%clk 1:02:08] } 14... Nxd3 { [%eval 0.0] [%clk 0:48:45] } 15. Qxd3 { [%eval -0.11] [%clk 1:02:33] } 15... f4 { [%eval -0.23] [%clk 0:49:14] } 16. Bf3?! { [%eval -1.2] } { Inaccuracy. Nb5 was best. } { [%clk 0:51:07] } 16... Bh3 { [%eval -1.2] [%clk 0:42:14] } 17. Rfe1?! { [%eval -2.19] } { Inaccuracy. Bg2 was best. } { [%clk 0:51:31] } 17... fxg3 { [%eval -2.12] [%clk 0:41:55] } 18. hxg3 { [%eval -2.75] [%clk 0:47:53] } 18... Qf6 { [%eval -2.82] [%clk 0:41:47] } 19. Kh2 { [%eval -2.76] [%clk 0:43:23] } 19... Qxf3 { [%eval -3.29] [%clk 0:29:38] } 20. Qxf3 { [%eval -3.12] [%clk 0:43:47] } 20... Rxf3 { [%eval -3.13] [%clk 0:30:06] } 21. Kxh3 { [%eval -3.38] [%clk 0:44:06] } 21... Rxf2 { [%eval -3.28] [%clk 0:30:28] } 22. Ne2 { [%eval -2.78] [%clk 0:42:18] } 22... Raf8 { [%eval -2.68] [%clk 0:12:15] } 23. Bxa5?! { [%eval -3.86] } { Inaccuracy. Be3 was best. } { [%clk 0:42:40] } 23... g5 { [%eval -4.07] [%clk 0:09:53] } 24. Bxc7?! { [%eval -5.62] } { Inaccuracy. Ng1 was best. } { [%clk 0:33:28] } 24... Nf6 { [%eval -5.91] [%clk 0:08:50] } 25. g4 { [%eval -5.62] [%clk 0:19:27] } 25... h5 { [%eval -6.02] [%clk 0:01:14] } 26. Kg3?? { [%eval #-3] } { Checkmate is now unavoidable. gxh5 was best. } { [%clk 0:19:14] } 26... Nxe4+ { [%eval #-2] [%clk 0:01:30] } 0-1