Event: Round 5: De Boer, Albert - Dobierzin, Olaf
Date: 2025-07-11
White: De Boer, Albert
WhiteElo: 1865
Black: Dobierzin, Olaf
BlackElo: 1932
Result: 1/2-1/2
ECO: B20
Opening: Sicilian Defense: Mengarini Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:55] } 1... c5 { [%eval 0.25] [%clk 1:30:50] } 2. a3 { [%eval -0.09] [%clk 1:29:03] } 2... g6 { [%eval -0.08] [%clk 1:29:03] } 3. Nc3 { [%eval -0.21] [%clk 1:29:27] } 3... Bg7 { [%eval -0.12] [%clk 1:29:17] } 4. Rb1 { [%eval -0.31] [%clk 1:29:44] } 4... Nc6 { [%eval -0.17] [%clk 1:26:39] } 5. b4 { [%eval -0.19] [%clk 1:26:51] } 5... cxb4 { [%eval 0.19] [%clk 1:26:18] } 6. axb4 { [%eval 0.03] [%clk 1:27:14] } 6... d6 { [%eval 0.07] [%clk 1:24:38] } 7. b5 { [%eval 0.13] [%clk 1:25:52] } 7... Nd4 { [%eval 0.21] [%clk 1:24:08] } 8. Nce2 { [%eval -0.01] [%clk 1:22:05] } 8... Nxe2 { [%eval -0.02] [%clk 1:13:52] } 9. Bxe2 { [%eval -0.13] [%clk 1:18:12] } 9... Nf6 { [%eval -0.05] [%clk 1:08:46] } 10. d3 { [%eval -0.03] [%clk 1:15:34] } 10... O-O { [%eval 0.0] [%clk 1:08:19] } 11. Nf3 { [%eval -0.15] [%clk 1:15:44] } 11... d5 { [%eval 0.25] [%clk 0:54:33] } 12. e5 { [%eval 0.33] [%clk 1:13:44] } 12... Ng4?! { [%eval 1.01] } { Inaccuracy. Nd7 was best. } { [%clk 0:53:05] } 13. d4 { [%eval 1.03] [%clk 1:09:48] } 13... f6 { [%eval 0.99] [%clk 0:51:57] } 14. h3 { [%eval 1.12] [%clk 1:08:27] } 14... Nh6 { [%eval 1.05] [%clk 0:52:18] } 15. exf6 { [%eval 0.98] [%clk 1:07:27] } 15... exf6 { [%eval 1.17] [%clk 0:52:33] } 16. O-O?! { [%eval 0.38] } { Inaccuracy. c4 was best. } { [%clk 1:07:36] } 16... Be6 { [%eval 0.29] [%clk 0:47:36] } 17. Ba3 { [%eval 0.29] [%clk 1:01:41] } 17... Re8 { [%eval 0.26] [%clk 0:47:54] } 18. Bb4 { [%eval 0.18] [%clk 1:01:30] } 18... Nf7 { [%eval 0.21] [%clk 0:45:59] } 19. Re1 { [%eval 0.19] [%clk 0:56:04] } 19... Bf8 { [%eval 0.23] [%clk 0:43:56] } 20. Qd2 { [%eval 0.18] [%clk 0:51:20] } 20... Bxb4 { [%eval 0.16] [%clk 0:41:35] } 21. Qxb4 { [%eval 0.21] [%clk 0:51:27] } 21... Nd6 { [%eval 0.24] [%clk 0:41:40] } 22. Bd3 { [%eval 0.29] [%clk 0:51:25] } 22... Qd7 { [%eval 0.19] [%clk 0:39:05] } 23. Re3 { [%eval 0.16] [%clk 0:45:49] } 23... Kg7 { [%eval 0.16] [%clk 0:39:05] } 24. Re2 { [%eval -0.01] [%clk 0:36:05] } 24... Kg8 { [%eval 0.24] } 25. Rbe1 { [%eval 0.26] [%clk 0:36:03] } 25... Bf5 { [%eval 0.61] [%clk 0:39:05] } 26. Re3? { [%eval -0.56] } { Mistake. Rxe8+ was best. } { [%clk 0:45:49] } 1/2-1/2