Event: Round 4: Alton Banda - Jan Karsten
Date: 2023-10-01
White: Alton Banda
WhiteElo: 1839
Black: Jan Karsten
BlackTitle: IM
BlackElo: 2249
Result: 0-1
ECO: B94
Opening: Sicilian Defense: Najdorf Variation
Variant: Standard

1. e4 { [%eval 0.36] [%clk 1:35:56] } 1... c5 { [%eval 0.32] [%clk 1:35:56] } 2. Nf3 { [%eval 0.0] [%clk 1:36:14] } 2... d6 { [%eval 0.0] [%clk 1:36:11] } 3. d4 { [%eval 0.25] [%clk 1:36:38] } 3... cxd4 { [%eval 0.13] [%clk 1:35:58] } 4. Nxd4 { [%eval 0.27] [%clk 1:37:03] } 4... Nf6 { [%eval 0.3] [%clk 1:36:25] } 5. Nc3 { [%eval 0.21] [%clk 1:37:23] } 5... a6 { [%eval 0.39] [%clk 1:36:52] } 6. Bg5 { [%eval 0.0] [%clk 1:37:36] } 6... Nbd7 { [%eval 0.18] [%clk 1:37:09] } 7. f4 { [%eval 0.0] [%clk 1:37:49] } 7... Qc7 { [%eval 0.09] [%clk 1:37:27] } 8. Qf3 { [%eval 0.38] [%clk 1:36:16] } 8... h6 { [%eval 0.29] [%clk 1:31:42] } 9. Bxf6 { [%eval 0.24] [%clk 1:31:22] } 9... Nxf6 { [%eval 0.27] [%clk 1:31:46] } 10. h3 { [%eval -0.02] [%clk 1:31:37] } 10... e5 { [%eval -0.03] [%clk 1:32:09] } 11. Nb3 { [%eval -0.02] [%clk 1:28:19] } 11... Be7 { [%eval 0.02] [%clk 1:31:10] } 12. Bd3 { [%eval -0.21] [%clk 1:27:35] } 12... O-O { [%eval -0.05] [%clk 1:28:31] } 13. f5?! { [%eval -0.71] } { Inaccuracy. O-O-O was best. } { [%clk 1:24:04] } 13... b5 { [%eval -0.73] [%clk 1:25:31] } 14. g4? { [%eval -1.91] } { Mistake. Nd5 was best. } { [%clk 1:18:42] } 14... Bb7?! { [%eval -1.1] } { Inaccuracy. b4 was best. } { [%clk 1:22:05] } 15. h4? { [%eval -2.42] } { Mistake. O-O-O was best. } { [%clk 1:15:15] } 15... b4 { [%eval -2.36] [%clk 1:18:50] } 16. Nd5 { [%eval -2.34] [%clk 1:14:52] } 16... Bxd5 { [%eval -2.48] [%clk 1:17:31] } 17. exd5 { [%eval -3.05] [%clk 1:14:57] } 17... e4 { [%eval -2.88] [%clk 1:17:52] } 18. Bxe4 { [%eval -3.14] [%clk 1:13:40] } 18... Nxe4 { [%eval -2.95] [%clk 1:10:32] } 19. Qxe4?! { [%eval -3.78] } { Inaccuracy. O-O-O was best. } { [%clk 1:14:04] } 19... Bxh4+ { [%eval -3.71] [%clk 1:09:20] } 20. Kd1 { [%eval -4.28] [%clk 1:13:48] } 20... Bf6 { [%eval -4.17] [%clk 1:06:49] } 21. Kc1?! { [%eval -5.7] } { Inaccuracy. Nd2 was best. } { [%clk 0:59:55] } 21... a5 { [%eval -4.96] [%clk 0:59:22] } 22. a3 { [%eval -5.49] [%clk 0:52:25] } 22... Rfe8 { [%eval -5.67] [%clk 0:56:13] } 23. Qd3 { [%eval -5.65] [%clk 0:50:47] } 23... Rac8 { [%eval -5.71] [%clk 0:46:24] } 24. Qd1 { [%eval -6.17] [%clk 0:30:00] } 24... a4 { [%eval -6.15] [%clk 0:43:21] } 25. Nd2?! { [%eval -9.2] } { Inaccuracy. Kb1 was best. } { [%clk 0:30:04] } 25... b3 { [%eval -9.47] [%clk 0:43:03] } 26. c3 { [%eval -9.79] [%clk 0:14:24] } 26... Bxc3 { [%eval -12.28] [%clk 0:43:00] } 27. Kb1 { [%eval #-7] [%clk 0:12:49] } 27... Bxd2 { [%eval -12.3] [%clk 0:43:04] } 28. Qxd2?! { [%eval #-5] } { Checkmate is now unavoidable. Ra2 was best. } { [%clk 0:13:12] } 28... Qc4 { [%eval #-4] [%clk 0:43:30] } 0-1