Event: Round 2: Mejia Herrera, Ruben Alexander - Castellanos, Johan Sebastian
Date: 2025-02-23
White: Mejia Herrera, Ruben Alexander
WhiteElo: 1739
Black: Castellanos, Johan Sebastian
BlackElo: 1981
Result: 1/2-1/2
ECO: A40
Opening: Mikenas Defense
Variant: Standard
TimeControl: 15+10

1. d4 { [%eval 0.17] [%clk 0:15:10] } 1... Nc6 { [%eval 0.55] [%clk 0:14:53] } 2. Bf4 { [%eval 0.3] [%clk 0:15:03] } 2... d6 { [%eval 0.35] [%clk 0:14:04] } 3. Nf3 { [%eval 0.3] [%clk 0:14:58] } 3... Bg4 { [%eval 0.58] [%clk 0:13:45] } 4. Nc3 { [%eval 0.26] [%clk 0:14:44] } 4... a6?! { [%eval 1.07] } { Inaccuracy. Bxf3 was best. } { [%clk 0:12:35] } 5. e3?! { [%eval 0.23] } { Inaccuracy. d5 was best. } { [%clk 0:14:40] } 5... e5 { [%eval 0.69] [%clk 0:11:51] } 6. dxe5 { [%eval 0.61] [%clk 0:14:25] } 6... Bxf3 { [%eval 0.68] [%clk 0:11:57] } 7. gxf3 { [%eval 0.27] [%clk 0:12:31] } 7... dxe5 { [%eval 0.26] [%clk 0:11:47] } 8. Qxd8+ { [%eval 0.05] [%clk 0:12:25] } 8... Rxd8 { [%eval 0.02] [%clk 0:11:55] } 9. Bg3 { [%eval 0.09] [%clk 0:12:25] } 9... Nf6 { [%eval 0.28] [%clk 0:11:05] } 10. a3 { [%eval 0.27] [%clk 0:12:12] } 10... Nh5 { [%eval 0.26] [%clk 0:10:37] } 11. Bd3 { [%eval 0.19] [%clk 0:11:51] } 11... Nxg3 { [%eval 0.45] [%clk 0:08:31] } 12. hxg3 { [%eval 0.47] [%clk 0:11:50] } 12... Be7 { [%eval 0.52] [%clk 0:07:39] } 13. O-O-O { [%eval 0.31] [%clk 0:10:58] } 13... h6 { [%eval 0.46] [%clk 0:05:13] } 14. Be4 { [%eval 0.32] [%clk 0:10:53] } 14... Rd6 { [%eval 0.65] [%clk 0:02:27] } 15. Nd5 { [%eval 0.69] [%clk 0:08:53] } 15... Bd8 { [%eval 0.78] [%clk 0:02:28] } 16. Rd2 { [%eval 0.82] [%clk 0:08:43] } 16... O-O { [%eval 1.04] [%clk 0:01:19] } 17. Rhd1 { [%eval 0.64] [%clk 0:08:49] } 17... g6?! { [%eval 1.67] } { Inaccuracy. f5 was best. } { [%clk 0:01:14] } 18. c4?? { [%eval -0.19] } { Blunder. Nc3 was best. } { [%clk 0:08:24] } 18... Kg7? { [%eval 1.41] } { Mistake. Na5 was best. } { [%clk 0:01:18] } 19. c5 { [%eval 1.3] [%clk 0:08:02] } 19... Re6? { [%eval 3.14] } { Mistake. Rd7 was best. } { [%clk 0:00:55] } 20. Nc3? { [%eval 1.53] } { Mistake. Nb4 was best. } { [%clk 0:07:17] } 20... Be7? { [%eval 3.3] } { Mistake. Bg5 was best. } { [%clk 0:00:46] } 21. b4? { [%eval 1.89] } { Mistake. Bd5 was best. } { [%clk 0:07:04] } 21... f5? { [%eval 3.91] } { Mistake. Bg5 was best. } { [%clk 0:00:40] } 22. Bd5 { [%eval 3.92] [%clk 0:07:04] } 22... Ref6 { [%eval 4.14] [%clk 0:00:48] } 23. Bb3 { [%eval 4.0] [%clk 0:06:38] } 23... Rd8 { [%eval 4.63] [%clk 0:00:39] } 24. Nd5?! { [%eval 3.57] } { Inaccuracy. Rd7 was best. } { [%clk 0:06:37] } 24... Rff8 { [%eval 4.36] [%clk 0:00:39] } 25. Nxc7 { [%eval 4.31] [%clk 0:06:17] } 25... Rxd2 { [%eval 4.3] [%clk 0:00:46] } 26. Rxd2 { [%eval 4.22] [%clk 0:06:16] } 26... Rc8 { [%eval 4.41] [%clk 0:00:51] } 27. Nd5 { [%eval 3.54] [%clk 0:06:08] } 27... Bd8 { [%eval 3.56] [%clk 0:00:56] } 28. Kb2 { [%eval 3.49] [%clk 0:05:42] } 28... h5 { [%eval 3.46] [%clk 0:01:03] } 29. Nb6 { [%eval 3.32] [%clk 0:05:02] } 29... Bxb6?! { [%eval 4.2] } { Inaccuracy. Rc7 was best. } { [%clk 0:01:09] } 30. cxb6 { [%eval 3.85] [%clk 0:05:10] } 30... Rd8 { [%eval 4.71] [%clk 0:01:00] } 31. Rxd8 { [%eval 4.69] [%clk 0:05:12] } 31... Nxd8 { [%eval 4.48] [%clk 0:01:10] } 32. Bd5 { [%eval 3.75] [%clk 0:05:01] } 32... g5 { [%eval 3.85] [%clk 0:01:17] } 33. g4?? { [%eval 0.0] } { Blunder. f4 was best. } { [%clk 0:04:16] } 33... h4 { [%eval 0.0] [%clk 0:00:54] } 34. gxf5 { [%eval 0.02] [%clk 0:04:22] } 34... Kf6?! { [%eval 0.58] } { Inaccuracy. h3 was best. } { [%clk 0:01:04] } 35. Be4?! { [%eval 0.0] } { Inaccuracy. Bc4 was best. } { [%clk 0:03:52] } 35... h3 { [%eval 0.0] [%clk 0:00:56] } 36. Kc3 { [%eval 0.0] [%clk 0:03:30] } 36... h2 { [%eval 0.0] [%clk 0:00:58] } 37. f4 { [%eval 0.0] [%clk 0:03:38] } 37... exf4 { [%eval 0.0] [%clk 0:01:06] } 38. exf4 { [%eval 0.0] [%clk 0:03:43] } 38... gxf4 { [%eval 0.0] [%clk 0:00:44] } 39. Kd3 { [%eval 0.0] [%clk 0:02:58] } 39... Ke5 { [%eval 0.0] [%clk 0:00:44] } 40. f6 { [%eval 0.0] [%clk 0:02:12] } 40... Kxf6 { [%eval 0.0] [%clk 0:00:46] } 41. Kd4 { [%eval 0.0] [%clk 0:02:04] } 41... Nc6+ { [%eval -0.05] [%clk 0:00:31] } 42. Kd5 { [%eval -0.02] [%clk 0:02:08] } 42... Ne7+?? { [%eval 4.71] } { Blunder. Ne5 was best. } { [%clk 0:00:31] } 43. Kd6 { [%eval 5.47] [%clk 0:01:59] } 43... Nf5+ { [%eval 5.97] [%clk 0:00:20] } 44. Kc7 { [%eval 5.85] [%clk 0:02:01] } 44... Ke5 { [%eval 6.67] [%clk 0:00:27] } 45. Bh1?? { [%eval 0.0] } { Blunder. Bxb7 was best. } { [%clk 0:01:47] } 45... Nd6 { [%eval 0.0] [%clk 0:00:33] } 46. Kd7 { [%eval 0.0] [%clk 0:01:09] } 46... Ne4 { [%eval 0.0] [%clk 0:00:33] } 47. Kc7 { [%eval 0.0] [%clk 0:00:30] } 47... Nxf2 { [%eval 0.0] [%clk 0:00:43] } 48. Bxb7?? { [%eval -4.03] } { Blunder. Bg2 was best. } { [%clk 0:00:33] } 48... Ne4 { [%eval -3.91] [%clk 0:00:51] } 49. Bxe4 { [%eval -3.8] [%clk 0:00:38] } 49... Kxe4 { [%eval -3.49] [%clk 0:01:00] } 50. b7 { [%eval -3.39] [%clk 0:00:46] } 50... h1=Q { [%eval -3.59] [%clk 0:01:08] } 51. b8=Q { [%eval -3.25] [%clk 0:00:52] } 51... Qh2?? { [%eval -0.03] } { Blunder. Qh7+ was best. } { [%clk 0:00:30] } 52. Qb7+ { [%eval -0.17] [%clk 0:00:52] } 52... Ke3 { [%eval 0.0] [%clk 0:00:32] } 53. Qb6+ { [%eval 0.0] [%clk 0:00:41] } 53... Kd2 { [%eval 0.0] [%clk 0:00:36] } 54. Qd4+ { [%eval 0.0] [%clk 0:00:38] } 54... Kc1?? { [%eval #21] } { Checkmate is now unavoidable. Kc2 was best. } { [%clk 0:00:40] } 55. Kb6?? { [%eval 0.0] } { Lost forced checkmate sequence. Qa1+ was best. } { [%clk 0:00:22] } 55... Qd2 { [%eval 0.0] [%clk 0:00:34] } 56. Qc4+ { [%eval 0.0] [%clk 0:00:26] } 56... Kb2 { [%eval -0.05] [%clk 0:00:35] } 57. Kxa6 { [%eval -0.02] [%clk 0:00:23] } 57... f3 { [%eval -0.02] [%clk 0:00:13] } 58. a4?? { [%eval #-19] } { Checkmate is now unavoidable. b5 was best. } { [%clk 0:00:15] } 58... Qe2 { [%eval #-20] [%clk 0:00:21] } 59. Qxe2+ { [%eval #-16] [%clk 0:00:16] } 59... fxe2 { [%eval #-15] [%clk 0:00:25] } 60. b5 { [%eval #-16] [%clk 0:00:22] } 60... e1=Q { [%eval #-15] [%clk 0:00:42] } 61. b6 { [%eval #-15] [%clk 0:00:29] } 61... Ka3 { [%eval #-14] [%clk 0:00:25] } 62. b7 { [%eval #-14] [%clk 0:00:24] } 62... Qe5 { [%eval #-13] [%clk 0:00:31] } 63. a5 { [%eval #-14] [%clk 0:00:14] } 63... Ka4?? { [%eval 0.0] } { Lost forced checkmate sequence. Qb8 was best. } { [%clk 0:00:38] } 64. b8=Q { [%eval 0.0] [%clk 0:00:19] } 64... Qxa5+ { [%eval 0.0] [%clk 0:00:20] } 65. Kb7 { [%eval 0.0] [%clk 0:00:26] } 65... Qc5 { [%clk 0:00:24] } 66. Qa7+ { [%clk 0:00:33] } 66... Qxa7+ { [%clk 0:00:33] } 67. Kxa7 { [%clk 0:00:42] } 1/2-1/2