Event: Round 1: Johannes Bertram - Niels Ondersteijn
Date: 2021-08-14
White: Johannes Bertram
Black: Niels Ondersteijn
Result: 1-0
ECO: B07
Opening: Pirc Defense: Byrne Variation
Variant: Standard

1. e4 { [%eval 0.24] [%clk 1:30:57] } 1... d6 { [%eval 0.52] [%clk 1:30:34] } 2. d4 { [%eval 0.4] [%clk 1:31:03] } 2... Nf6 { [%eval 0.6] [%clk 1:30:47] } 3. Nc3 { [%eval 0.52] [%clk 1:31:24] } 3... g6 { [%eval 0.71] [%clk 1:31:10] } 4. Bg5?! { [%eval 0.17] } { Inaccuracy. Be3 was best. } { [%clk 1:31:04] } 4... Bg7 { [%eval 0.55] [%clk 1:30:16] } 5. Qd2 { [%eval 0.6] [%clk 1:31:05] } 5... h6 { [%eval 0.56] [%clk 1:29:49] } 6. Bf4 { [%eval 0.44] [%clk 1:31:07] } 6... a6 { [%eval 0.6] [%clk 1:28:10] } 7. O-O-O?! { [%eval -0.01] } { Inaccuracy. Nf3 was best. } { [%clk 1:30:15] } 7... b5 { [%eval 0.29] [%clk 1:27:45] } 8. f3 { [%eval -0.13] [%clk 1:28:06] } 8... Nbd7 { [%eval -0.16] [%clk 1:26:50] } 9. g4 { [%eval -0.48] [%clk 1:19:41] } 9... Bb7 { [%eval -0.35] [%clk 1:26:20] } 10. h3? { [%eval -1.57] } { Mistake. Be3 was best. } { [%clk 1:15:58] } 10... c5 { [%eval -1.41] [%clk 1:23:29] } 11. dxc5 { [%eval -1.41] [%clk 1:10:55] } 11... Nxc5 { [%eval -1.03] [%clk 1:22:16] } 12. e5?? { [%eval -3.37] } { Blunder. Be3 was best. } { [%clk 1:07:05] } 12... b4 { [%eval -3.05] [%clk 1:21:17] } 13. Nb1? { [%eval -5.42] } { Mistake. exf6 was best. } { [%clk 0:48:03] } 13... Nd5 { [%eval -5.53] [%clk 1:16:58] } 14. Bc4 { [%eval -5.16] [%clk 0:44:46] } 14... Nxf4 { [%eval -5.25] [%clk 1:09:57] } 15. Qxf4 { [%eval -5.15] [%clk 0:43:28] } 15... O-O { [%eval -5.22] [%clk 1:09:30] } 16. exd6 { [%eval -5.19] [%clk 0:34:02] } 16... Na4 { [%eval -4.73] [%clk 1:08:28] } 17. c3 { [%eval -5.39] [%clk 0:32:18] } 17... bxc3 { [%eval -5.79] [%clk 1:03:04] } 18. Nxc3 { [%eval -6.66] [%clk 0:28:55] } 18... Nxc3 { [%eval -6.53] [%clk 1:02:46] } 19. bxc3 { [%eval -6.92] [%clk 0:29:07] } 19... Qa5?! { [%eval -4.37] } { Inaccuracy. Rc8 was best. } { [%clk 1:01:40] } 20. Ne2 { [%eval -4.57] [%clk 0:26:45] } 20... exd6 { [%eval -4.7] [%clk 0:59:10] } 21. Rxd6 { [%eval -5.75] [%clk 0:21:43] } 21... Be5?? { [%eval 11.05] } { Blunder. g5 was best. } { [%clk 0:59:26] } 22. Rxg6+ { [%eval 12.03] [%clk 0:21:49] } 22... Bg7 { [%eval 8.13] [%clk 0:59:08] } 23. Qd4 { [%eval 7.11] [%clk 0:21:38] } 23... Qa3+? { [%eval #10] } { Checkmate is now unavoidable. Qg5+ was best. } { [%clk 0:57:13] } 24. Kc2 { [%eval #9] [%clk 0:16:12] } 24... Be4+ { [%eval #9] [%clk 0:54:24] } 25. fxe4 { [%eval #8] [%clk 0:15:54] } 25... Qa4+ { [%eval #8] [%clk 0:54:41] } 26. Kb2 { [%eval #7] [%clk 0:14:27] } 1-0