Event: Round 4: Aitchison, A Keith - Lynch, Chris
Site: https://lichess.org/broadcast/2025-british-chess-championships--over-50/round-4/WP8bsEFt/wz2VNuLw
White: Aitchison, A Keith
WhiteElo: 1757
Black: Lynch, Chris
BlackElo: 1615
Result: 1/2-1/2
ECO: B20
Opening: Sicilian Defense: Mengarini Variation
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:30:56] } 1... c5 { [%eval 0.24] [%clk 1:30:48] } 2. a3 { [%eval -0.09] [%clk 1:31:21] } 2... d6 { [%eval 0.0] [%clk 1:30:53] } 3. b4 { [%eval -0.24] [%clk 1:31:38] } 3... b6 { [%eval 0.0] [%clk 1:30:45] } 4. bxc5 { [%eval -0.28] [%clk 1:30:57] } 4... bxc5 { [%eval -0.13] [%clk 1:30:45] } 5. Nc3 { [%eval -0.22] [%clk 1:30:57] } 5... Nc6 { [%eval -0.3] [%clk 1:30:43] } 6. Rb1 { [%eval -0.28] [%clk 1:30:30] } 6... Nf6 { [%eval -0.27] [%clk 1:30:40] } 7. Nf3 { [%eval -0.22] [%clk 1:29:29] } 7... e5?! { [%eval 0.33] } { Inaccuracy. Bd7 was best. } { [%clk 1:25:20] } 8. Bb5 { [%eval 0.3] [%clk 1:26:55] } 8... Bd7 { [%eval 0.34] [%clk 1:25:25] } 9. O-O { [%eval 0.23] [%clk 1:23:48] } 9... Be7 { [%eval 0.26] [%clk 1:25:14] } 10. d3 { [%eval 0.26] [%clk 1:22:08] } 10... O-O { [%eval 0.27] [%clk 1:24:10] } 11. Ne2 { [%eval -0.15] [%clk 1:17:09] } 11... Rb8 { [%eval -0.11] [%clk 1:23:19] } 12. Bg5 { [%eval -0.04] [%clk 1:15:08] } 12... Qa5 { [%eval 0.11] [%clk 1:15:37] } 13. Bd2 { [%eval -0.07] [%clk 1:07:33] } 13... Qc7 { [%eval -0.15] [%clk 1:08:43] } 14. c3 { [%eval -0.32] [%clk 1:02:21] } 14... Rb6 { [%eval -0.19] [%clk 1:05:39] } 15. Qc2 { [%eval -0.25] [%clk 1:00:00] } 15... Rfb8 { [%eval -0.15] [%clk 1:05:36] } 16. Bxc6 { [%eval -0.64] [%clk 0:54:34] } 16... Bxc6 { [%eval -0.95] [%clk 1:03:40] } 17. c4 { [%eval -0.93] [%clk 0:50:53] } 17... Qb7?! { [%eval -0.25] } { Inaccuracy. Ba4 was best. } { [%clk 1:02:20] } 18. Nc3 { [%eval -0.25] [%clk 0:49:23] } 18... Rb2 { [%eval -0.15] [%clk 0:48:54] } 19. Rxb2 { [%eval -0.17] [%clk 0:49:17] } 19... Qxb2 { [%eval -0.24] [%clk 0:49:15] } 20. Qxb2 { [%eval -0.21] [%clk 0:49:39] } 20... Rxb2 { [%eval -0.2] [%clk 0:49:38] } 21. Rb1 { [%eval -0.11] [%clk 0:49:45] } 21... Rxb1+ { [%eval -0.11] [%clk 0:49:17] } 22. Nxb1 { [%eval -0.22] [%clk 0:49:44] } 22... Ba4 { [%eval -0.08] [%clk 0:47:44] } 23. Nc3 { [%eval 0.0] [%clk 0:49:48] } 1/2-1/2