Event: Round 4: Conor O'Sullivan - Chen, Aleksandr
Site: https://lichess.org/broadcast/lichess-meetup-toronto-2025/round-4/3t0UtYpG/dZAMLQRH
Date: 2025-10-19
White: Conor O'Sullivan
Black: Chen, Aleksandr
Result: 0-1
ECO: B10
Opening: Caro-Kann Defense: Breyer Variation
Variant: Standard
TimeControl: 3+2

1. e4 { [%eval 0.18] [%clk 0:03:03] } 1... c6 { [%eval 0.23] [%clk 0:03:03] } 2. d3 { [%eval 0.03] [%clk 0:03:03] } 2... d5 { [%eval 0.18] [%clk 0:03:03] } 3. Nd2 { [%eval 0.0] [%clk 0:03:04] } 3... e5 { [%eval 0.0] [%clk 0:03:04] } 4. Ngf3 { [%eval -0.01] [%clk 0:03:04] } 4... Bd6 { [%eval 0.0] [%clk 0:03:02] } 5. g3 { [%eval -0.19] [%clk 0:03:05] } 5... Nf6 { [%eval -0.11] [%clk 0:03:02] } 6. Bg2 { [%eval -0.21] [%clk 0:03:05] } 6... O-O { [%eval -0.19] [%clk 0:03:00] } 7. O-O { [%eval -0.14] [%clk 0:03:05] } 7... Re8 { [%eval -0.02] [%clk 0:03:01] } 8. Re1 { [%eval -0.31] [%clk 0:03:02] } 8... Nbd7 { [%eval -0.42] [%clk 0:02:54] } 9. b3 { [%eval -0.36] [%clk 0:02:58] } 9... a5 { [%eval -0.22] [%clk 0:02:54] } 10. a3 { [%eval -0.35] [%clk 0:02:55] } 10... b6?! { [%eval 0.2] } { Inaccuracy. d4 was best. } { [%clk 0:02:35] } 11. Bb2 { [%eval 0.12] [%clk 0:02:54] } 11... Qc7 { [%eval 0.09] [%clk 0:02:35] } 12. c3 { [%eval -0.32] [%clk 0:02:45] } 12... Nc5 { [%eval -0.29] [%clk 0:02:22] } 13. d4?? { [%eval -2.5] } { Blunder. Qc2 was best. } { [%clk 0:02:38] } 13... Nd3 { [%eval -2.55] [%clk 0:02:21] } 14. dxe5 { [%eval -2.22] [%clk 0:02:30] } 14... Bxe5 { [%eval -2.27] [%clk 0:01:46] } 15. Nxe5 { [%eval -2.89] [%clk 0:02:14] } 15... Qxe5?? { [%eval -0.4] } { Blunder. Nxe1 was best. } { [%clk 0:01:33] } 16. f4?? { [%eval -3.88] } { Blunder. Nf3 was best. } { [%clk 0:02:13] } 16... Qd6?! { [%eval -2.99] } { Inaccuracy. Qe7 was best. } { [%clk 0:01:29] } 17. e5?? { [%eval #-8] } { Checkmate is now unavoidable. b4 was best. } { [%clk 0:02:11] } 17... Qc5+ { [%eval #-7] [%clk 0:01:30] } 18. Kh1 { [%eval #-4] [%clk 0:02:11] } 18... Nf2+ { [%eval #-3] [%clk 0:01:28] } 19. Kg1 { [%eval #-3] [%clk 0:02:10] } 19... Nh3+ { [%eval #-2] [%clk 0:01:24] } 20. Kh1 { [%eval #-2] [%clk 0:02:09] } 20... Qg1+ { [%eval #-1] [%clk 0:01:22] } 0-1