Event: Round 11: Harstad, Christian - Prentice, Gregory
Site: https://lichess.org/broadcast/fide-world-senior-championship-2025--open-50/round-11/fX1DoLhb/TqwrfVqS
Date: 2025-11-01
White: Harstad, Christian
WhiteElo: 1922
Black: Prentice, Gregory
Result: 1/2-1/2
ECO: A43
Opening: Benoni Defense: French Benoni
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:58] } 1... e6 { [%eval 0.37] [%clk 1:30:48] } 2. e4 { [%eval 0.29] [%clk 1:31:19] } 2... c5 { [%eval 0.58] [%clk 1:29:43] } 3. d5 { [%eval 0.52] [%clk 1:30:54] } 3... d6 { [%eval 0.83] [%clk 1:29:59] } 4. Nc3 { [%eval 0.61] [%clk 1:29:06] } 4... e5 { [%eval 1.16] [%clk 1:30:05] } 5. Bb5+ { [%eval 1.07] [%clk 1:25:27] } 5... Bd7 { [%eval 1.1] [%clk 1:30:19] } 6. Bd3 { [%eval 1.03] [%clk 1:24:54] } 6... Be7 { [%eval 1.17] [%clk 1:30:20] } 7. Nf3 { [%eval 1.54] [%clk 1:24:40] } 7... Nf6 { [%eval 1.16] [%clk 1:30:43] } 8. O-O { [%eval 1.32] [%clk 1:22:08] } 8... O-O { [%eval 1.25] [%clk 1:31:07] } 9. a4 { [%eval 1.42] [%clk 1:20:26] } 9... a5 { [%eval 1.64] [%clk 1:25:16] } 10. h3 { [%eval 1.62] [%clk 1:11:43] } 10... Na6 { [%eval 1.77] [%clk 1:25:38] } 11. Nd2 { [%eval 1.88] [%clk 1:05:47] } 11... Ne8 { [%eval 1.91] [%clk 1:14:37] } 12. Nc4 { [%eval 1.82] [%clk 1:05:07] } 12... Nb4 { [%eval 1.65] [%clk 1:13:04] } 13. f4 { [%eval 1.74] [%clk 0:52:50] } 13... Nxd3 { [%eval 1.78] [%clk 1:00:23] } 14. Qxd3 { [%eval 1.93] [%clk 0:49:59] } 14... exf4 { [%eval 2.07] [%clk 0:51:25] } 15. Bxf4 { [%eval 2.01] [%clk 0:50:15] } 15... f6 { [%eval 2.38] [%clk 0:51:43] } 16. Qg3 { [%eval 2.33] [%clk 0:41:34] } 16... Qc7 { [%eval 2.4] [%clk 0:49:54] } 17. Ra3 { [%eval 2.41] [%clk 0:38:41] } 17... Rb8 { [%eval 2.51] [%clk 0:48:18] } 18. Raa1 { [%eval 2.52] [%clk 0:38:06] } 18... b5 { [%eval 3.19] [%clk 0:48:10] } 19. axb5 { [%eval 3.24] [%clk 0:36:36] } 19... Bxb5 { [%eval 3.28] [%clk 0:48:07] } 20. Nxb5 { [%eval 3.33] [%clk 0:35:54] } 20... Rxb5 { [%eval 3.18] [%clk 0:47:39] } 21. Ra4?! { [%eval 2.4] } { Inaccuracy. b3 was best. } { [%clk 0:35:14] } 21... Rb4 { [%eval 2.24] [%clk 0:47:07] } 22. Rfa1?! { [%eval 1.1] } { Inaccuracy. b3 was best. } { [%clk 0:32:40] } 22... Qd7?! { [%eval 1.81] } { Inaccuracy. f5 was best. } { [%clk 0:42:20] } 23. b3 { [%eval 1.81] [%clk 0:24:57] } 23... f5 { [%eval 1.73] [%clk 0:42:33] } 24. Rxa5 { [%eval 1.86] [%clk 0:24:07] } 24... fxe4 { [%eval 2.3] [%clk 0:42:54] } 25. Ra7 { [%eval 1.69] [%clk 0:23:33] } 25... Rb7 { [%eval 1.73] [%clk 0:40:46] } 26. Rxb7? { [%eval 0.29] } { Mistake. Ra8 was best. } { [%clk 0:20:22] } 26... Qxb7 { [%eval 0.18] [%clk 0:41:07] } 27. Rd1 { [%eval 0.18] [%clk 0:18:06] } 27... Qd7 { [%eval 0.23] [%clk 0:41:12] } 28. Qe3 { [%eval 0.01] [%clk 0:12:27] } 28... Qf5 { [%eval 0.0] [%clk 0:39:31] } 1/2-1/2