Event: Round 4: Niebuhr, Gerd - De Boer, Albert
Date: 2025-07-10
White: Niebuhr, Gerd
WhiteElo: 1940
Black: De Boer, Albert
BlackElo: 1865
Result: 1/2-1/2
ECO: A43
Opening: Benoni Defense: Benoni-Indian Defense
Variant: Standard

1. d4 { [%eval 0.17] [%clk 1:30:52] } 1... c5 { [%eval 0.61] [%clk 1:30:50] } 2. d5 { [%eval 0.6] [%clk 1:31:07] } 2... Nf6 { [%eval 0.6] [%clk 1:31:14] } 3. Nc3 { [%eval 0.54] [%clk 1:29:15] } 3... e5 { [%eval 0.97] [%clk 1:30:12] } 4. f4?! { [%eval 0.26] } { Inaccuracy. e4 was best. } { [%clk 1:28:08] } 4... e4 { [%eval 0.4] [%clk 1:18:19] } 5. Nh3 { [%eval 0.66] [%clk 1:24:49] } 5... d6 { [%eval 0.76] [%clk 1:17:15] } 6. Nf2 { [%eval 0.76] [%clk 1:22:06] } 6... Bf5 { [%eval 1.16] [%clk 1:17:13] } 7. e3 { [%eval 1.16] [%clk 1:22:21] } 7... h5 { [%eval 1.04] [%clk 1:17:25] } 8. g3 { [%eval 1.11] [%clk 1:19:37] } 8... g6 { [%eval 1.48] [%clk 1:15:58] } 9. a4?! { [%eval 0.61] } { Inaccuracy. h3 was best. } { [%clk 1:16:16] } 9... Bg7 { [%eval 0.53] [%clk 1:13:27] } 10. Bb5+?! { [%eval -0.06] } { Inaccuracy. h3 was best. } { [%clk 1:13:00] } 10... Nbd7 { [%eval 0.05] [%clk 1:13:24] } 11. a5 { [%eval 0.07] [%clk 1:12:33] } 11... Qe7 { [%eval 0.43] [%clk 1:08:36] } 12. h3 { [%eval 0.11] [%clk 1:10:22] } 12... a6 { [%eval 0.17] [%clk 1:00:10] } 13. Be2 { [%eval -0.11] [%clk 1:10:21] } 13... Nf8?! { [%eval 0.95] } { Inaccuracy. O-O-O was best. } { [%clk 0:55:16] } 14. g4?! { [%eval 0.03] } { Inaccuracy. Na4 was best. } { [%clk 0:59:47] } 14... hxg4 { [%eval 0.0] [%clk 0:54:59] } 15. hxg4 { [%eval 0.04] [%clk 0:59:50] } 15... Rxh1+ { [%eval 0.22] [%clk 0:55:15] } 16. Nxh1 { [%eval 0.17] [%clk 1:00:03] } 16... Bd7 { [%eval 0.03] [%clk 0:55:15] } 17. Nf2 { [%eval 0.0] [%clk 0:56:26] } 17... N6h7?! { [%eval 0.66] } { Inaccuracy. g5 was best. } { [%clk 0:53:30] } 18. Na4?! { [%eval -0.41] } { Inaccuracy. Ncxe4 was best. } { [%clk 0:50:59] } 18... Qh4 { [%eval -0.53] [%clk 0:41:45] } 19. Nb6 { [%eval -0.66] [%clk 0:50:44] } 19... Rb8?! { [%eval 0.0] } { Inaccuracy. Rd8 was best. } { [%clk 0:41:37] } 20. g5? { [%eval -1.56] } { Mistake. Rb1 was best. } { [%clk 0:50:19] } 20... Qg3? { [%eval 0.0] } { Mistake. Nxg5 was best. } { [%clk 0:41:35] } 21. Nxd7 { [%eval -0.43] [%clk 0:50:11] } 21... Nxd7 { [%eval -0.51] [%clk 0:53:30] } 22. Ra4?? { [%eval -3.09] } { Blunder. Bf1 was best. } { [%clk 0:50:07] } 22... f5 { [%eval -2.77] [%clk 0:53:30] } 1/2-1/2