Event: Campeonato Nacional Senior 2025
Site: Comité Olímpico Nacional, Coronado, Costa Rica
White: Mena Vilchez, Ulises
WhiteElo: 1718
Black: Bolanos Barth, Francisco
BlackElo: 1781
Result: 1-0
ECO: B07
Opening: Pirc Defense: 150 Attack, Sveshnikov-Jansa Attack
Variant: Standard
TimeControl: 90+30

1. e4 { [%eval 0.18] [%clk 1:16:41] } 1... d6 { [%eval 0.43] [%clk 1:30:50] } 2. d4 { [%eval 0.43] [%clk 1:16:22] } 2... Nf6 { [%eval 0.43] [%clk 1:31:09] } 3. Nc3 { [%eval 0.38] [%clk 1:15:50] } 3... g6 { [%eval 0.63] [%clk 1:31:26] } 4. h3 { [%eval 0.45] [%clk 1:13:58] } 4... c6 { [%eval 0.55] [%clk 1:31:23] } 5. Be3 { [%eval 0.59] [%clk 1:12:19] } 5... b5 { [%eval 0.68] [%clk 1:31:29] } 6. a3 { [%eval 0.65] [%clk 1:11:10] } 6... Nbd7 { [%eval 0.64] [%clk 1:31:23] } 7. Nf3 { [%eval 0.57] [%clk 1:10:54] } 7... Nb6?! { [%eval 1.39] } { Inaccuracy. e5 was best. } { [%clk 1:28:01] } 8. d5 { [%eval 1.71] [%clk 1:05:33] } 8... a6?! { [%eval 2.9] } { Inaccuracy. cxd5 was best. } { [%clk 1:24:48] } 9. dxc6 { [%eval 2.98] [%clk 1:03:59] } 9... Qc7 { [%eval 2.9] [%clk 1:24:25] } 10. Qd4 { [%eval 2.82] [%clk 1:00:50] } 10... Rb8 { [%eval 2.98] [%clk 1:23:35] } 11. Nd5?! { [%eval 2.16] } { Inaccuracy. e5 was best. } { [%clk 0:54:33] } 11... Nbxd5 { [%eval 1.89] [%clk 1:23:40] } 12. exd5 { [%eval 2.15] [%clk 0:54:25] } 12... Bg7 { [%eval 2.02] [%clk 1:23:19] } 13. O-O-O { [%eval 2.01] [%clk 0:51:21] } 13... O-O { [%eval 2.1] [%clk 1:22:19] } 14. Qa7 { [%eval 2.11] [%clk 0:51:45] } 14... Qxa7 { [%eval 2.2] [%clk 1:18:59] } 15. Bxa7 { [%eval 2.17] [%clk 0:52:11] } 15... Ra8 { [%eval 2.19] [%clk 1:19:28] } 16. Be3 { [%eval 2.23] [%clk 0:48:52] } 16... Bf5 { [%eval 2.39] [%clk 1:18:23] } 17. Ng5 { [%eval 2.4] [%clk 0:39:17] } 17... Ne8?! { [%eval 3.13] } { Inaccuracy. h6 was best. } { [%clk 1:06:42] } 18. g4 { [%eval 3.19] [%clk 0:39:03] } 18... Bc8 { [%eval 3.14] [%clk 1:06:56] } 19. Nf3 { [%eval 3.07] [%clk 0:36:03] } 19... e6 { [%eval 3.17] [%clk 1:01:33] } 20. Bg2 { [%eval 3.08] [%clk 0:27:14] } 20... e5 { [%eval 3.29] [%clk 0:52:54] } 21. Nd2 { [%eval 3.32] [%clk 0:23:37] } 21... f5 { [%eval 3.28] [%clk 0:50:07] } 22. gxf5 { [%eval 3.2] [%clk 0:23:06] } 22... Bxf5 { [%eval 3.23] [%clk 0:49:38] } 23. Ne4 { [%eval 3.26] [%clk 0:22:07] } 23... Bxe4 { [%eval 3.61] [%clk 0:41:45] } 24. Bxe4 { [%eval 3.72] [%clk 0:21:35] } 24... Rf7 { [%eval 4.04] [%clk 0:37:03] } 25. Rd3 { [%eval 3.79] [%clk 0:20:09] } 25... Rb8 { [%eval 4.01] [%clk 0:36:46] } 26. Rc3 { [%eval 3.69] [%clk 0:18:41] } 26... b4?! { [%eval 5.05] } { Inaccuracy. Bf6 was best. } { [%clk 0:33:06] } 27. axb4 { [%eval 5.04] [%clk 0:19:05] } 27... Rxb4 { [%eval 5.05] [%clk 0:33:24] } 28. f3 { [%eval 4.95] [%clk 0:19:33] } 28... Nc7 { [%eval 5.13] [%clk 0:30:46] } 29. Rb3 { [%eval 4.15] [%clk 0:19:15] } 29... Rxb3 { [%eval 4.42] [%clk 0:29:21] } 30. cxb3 { [%eval 4.21] [%clk 0:19:41] } 30... Bf6 { [%eval 4.96] [%clk 0:24:57] } 31. Kc2 { [%eval 4.57] [%clk 0:18:51] } 31... Bd8 { [%eval 5.46] [%clk 0:21:17] } 32. Ra1 { [%eval 5.44] [%clk 0:18:59] } 32... Kg7 { [%eval 5.79] [%clk 0:16:54] } 33. Bb6 { [%eval 5.71] [%clk 0:15:58] } 33... Kf6 { [%eval 6.03] [%clk 0:15:14] } 34. Bxc7 { [%eval 5.9] [%clk 0:15:53] } 34... Rxc7 { [%eval 5.87] [%clk 0:14:59] } 35. Rxa6 { [%eval 5.89] [%clk 0:16:02] } 35... Kg5?! { [%eval 7.91] } { Inaccuracy. Rc8 was best. } { [%clk 0:14:46] } 36. Ra8 { [%eval 8.33] [%clk 0:16:22] } 36... Bf6 { [%eval 8.69] [%clk 0:11:29] } 37. b4 { [%eval 8.79] [%clk 0:16:15] } 37... Kh4 { [%eval 8.88] [%clk 0:11:23] } 38. b5 { [%eval 9.17] [%clk 0:16:32] } 38... Kxh3 { [%eval 9.76] [%clk 0:11:13] } 39. b6 { [%eval 9.56] [%clk 0:16:48] } 1-0