Event: Round 2: Potter, John M - Siva Mahadevan
Date: 2025-04-19
White: Potter, John M
WhiteElo: 2033
Black: Siva Mahadevan
BlackTitle: IM
BlackElo: 2369
Result: 0-1
ECO: B30
Opening: Sicilian Defense: Old Sicilian
Variant: Standard
TimeControl: 90+30

1. e4 { [%eval 0.18] [%clk 1:30:59] } 1... c5 { [%eval 0.25] [%clk 1:30:49] } 2. Nf3 { [%eval 0.2] [%clk 1:31:24] } 2... Nc6 { [%eval 0.25] [%clk 1:30:56] } 3. g3 { [%eval -0.08] [%clk 1:29:21] } 3... g6 { [%eval -0.14] [%clk 1:29:53] } 4. Bg2 { [%eval -0.1] [%clk 1:28:31] } 4... Bg7 { [%eval 0.0] [%clk 1:30:12] } 5. O-O { [%eval -0.09] [%clk 1:28:51] } 5... d6 { [%eval 0.0] [%clk 1:29:43] } 6. h3 { [%eval -0.14] [%clk 1:26:44] } 6... e5 { [%eval -0.11] [%clk 1:28:50] } 7. d3 { [%eval -0.19] [%clk 1:26:23] } 7... Nge7 { [%eval -0.09] [%clk 1:29:02] } 8. Nc3 { [%eval -0.43] [%clk 1:26:27] } 8... h6 { [%eval -0.31] [%clk 1:28:21] } 9. Be3 { [%eval -0.37] [%clk 1:24:51] } 9... Be6 { [%eval -0.19] [%clk 1:28:23] } 10. Kh2 { [%eval -0.47] [%clk 1:20:20] } 10... Qd7 { [%eval -0.41] [%clk 1:27:22] } 11. a4 { [%eval -0.64] [%clk 1:18:18] } 11... f5 { [%eval -0.71] [%clk 1:25:22] } 12. Nd2 { [%eval -0.73] [%clk 1:12:15] } 12... g5?! { [%eval 0.24] } { Inaccuracy. O-O-O was best. } { [%clk 1:23:33] } 13. exf5 { [%eval 0.22] [%clk 1:09:10] } 13... Nxf5 { [%eval 0.27] [%clk 1:23:38] } 14. Nd5 { [%eval 0.34] [%clk 1:02:13] } 14... O-O { [%eval 0.27] [%clk 1:16:34] } 15. Qh5 { [%eval -0.07] [%clk 0:56:30] } 15... Nb4 { [%eval -0.11] [%clk 1:12:33] } 16. Nxb4 { [%eval -0.16] [%clk 0:56:08] } 16... cxb4 { [%eval -0.23] [%clk 1:08:02] } 17. Ne4 { [%eval -0.68] [%clk 0:53:19] } 17... Rac8?! { [%eval 0.16] } { Inaccuracy. Bf7 was best. } { [%clk 1:02:04] } 18. c4 { [%eval 0.14] [%clk 0:50:11] } 18... bxc3 { [%eval 0.15] [%clk 0:58:34] } 19. Nxc3 { [%eval 0.0] [%clk 0:49:56] } 19... b6 { [%eval -0.05] [%clk 0:51:22] } 20. a5 { [%eval -0.2] [%clk 0:43:12] } 20... b5 { [%eval -0.09] [%clk 0:48:29] } 21. Nd5 { [%eval -0.42] [%clk 0:39:54] } 21... Rc2 { [%eval -0.32] [%clk 0:47:39] } 22. Rac1 { [%eval -0.29] [%clk 0:38:59] } 22... Nxe3 { [%eval -0.44] [%clk 0:47:34] } 23. Nxe3 { [%eval -0.34] [%clk 0:31:35] } 23... Rxc1 { [%eval -0.06] [%clk 0:46:20] } 24. Rxc1 { [%eval -0.12] [%clk 0:31:53] } 24... Rxf2 { [%eval 0.0] [%clk 0:46:42] } 25. b4?! { [%eval -0.82] } { Inaccuracy. Kg1 was best. } { [%clk 0:28:31] } 25... Bf7 { [%eval -0.5] [%clk 0:38:37] } 26. Qg4 { [%eval -0.75] [%clk 0:25:08] } 26... Be6 { [%eval -0.76] [%clk 0:35:20] } 27. Qh5 { [%eval -0.65] [%clk 0:24:59] } 27... Rd2 { [%eval -0.34] [%clk 0:26:46] } 28. Qg6? { [%eval -1.86] } { Mistake. Kg1 was best. } { [%clk 0:21:23] } 28... Bxh3?! { [%eval -0.97] } { Inaccuracy. Bf7 was best. } { [%clk 0:17:45] } 29. Nd5?? { [%eval -5.68] } { Blunder. Kg1 was best. } { [%clk 0:17:17] } 29... Rxg2+ { [%eval -5.88] [%clk 0:17:07] } 30. Kh1 { [%eval -5.81] [%clk 0:17:46] } 30... Qf7 { [%eval -5.68] [%clk 0:17:14] } 31. Qe4 { [%eval -6.6] [%clk 0:15:52] } 31... Rxg3 { [%eval -6.29] [%clk 0:16:53] } 0-1