Event: Round 4: Otero Portillo, Daniel Alejandro - Sierra Castillo, Eyber
Site: https://lichess.org/broadcast/final-nacional-colombia-intercolegiados-activo-2025--juvenil-masculino/round-4/OAewmyNR/j1IunGlC
Date: 2025-10-28
White: Otero Portillo, Daniel Alejandro
Black: Sierra Castillo, Eyber
BlackElo: 1690
Result: 0-1
ECO: A22
Opening: English Opening: King's English Variation, Two Knights Variation
Variant: Standard
TimeControl: 15+10

1. c4 { [%eval 0.12] [%clk 0:15:17] } 1... e5 { [%eval 0.14] [%clk 0:15:15] } 2. Nc3 { [%eval 0.13] [%clk 0:15:25] } 2... Nf6 { [%eval 0.18] [%clk 0:15:09] } 3. Nf3 { [%eval 0.15] [%clk 0:15:33] } 3... d6 { [%eval 0.51] [%clk 0:15:05] } 4. g3 { [%eval 0.29] [%clk 0:15:37] } 4... Nc6 { [%eval 0.49] [%clk 0:15:08] } 5. Bg2 { [%eval 0.45] [%clk 0:15:45] } 5... Bg4 { [%eval 0.71] [%clk 0:14:47] } 6. d3 { [%eval 0.53] [%clk 0:15:38] } 6... Be7 { [%eval 0.6] [%clk 0:15:05] } 7. O-O { [%eval 0.41] [%clk 0:15:44] } 7... Qd7 { [%eval 0.53] [%clk 0:15:08] } 8. a3 { [%eval 0.1] [%clk 0:15:37] } 8... h6 { [%eval 0.19] [%clk 0:14:06] } 9. b4 { [%eval 0.2] [%clk 0:15:01] } 9... O-O { [%eval 0.2] [%clk 0:13:24] } 10. e3 { [%eval 0.2] [%clk 0:14:26] } 10... Nh7 { [%eval 0.37] [%clk 0:13:10] } 11. Qc2 { [%eval 0.38] [%clk 0:13:35] } 11... Bh3 { [%eval 0.25] [%clk 0:11:58] } 12. Nd5 { [%eval 0.13] [%clk 0:13:27] } 12... Bxg2 { [%eval 0.01] [%clk 0:11:44] } 13. Kxg2 { [%eval 0.01] [%clk 0:13:34] } 13... f5 { [%eval 0.17] [%clk 0:10:43] } 14. b5 { [%eval 0.27] [%clk 0:11:39] } 14... Nd8 { [%eval 0.26] [%clk 0:10:41] } 15. a4 { [%eval 0.16] [%clk 0:11:29] } 15... Ne6 { [%eval 0.12] [%clk 0:10:03] } 16. d4 { [%eval 0.04] [%clk 0:10:50] } 16... e4 { [%eval 0.09] [%clk 0:09:48] } 17. Ne5?? { [%eval -3.55] } { Blunder. Ng1 was best. } { [%clk 0:10:10] } 17... dxe5 { [%eval -3.51] [%clk 0:08:34] } 18. Nxe7+ { [%eval -4.38] [%clk 0:10:16] } 18... Qxe7 { [%eval -4.14] [%clk 0:08:29] } 19. Ba3 { [%eval -4.34] [%clk 0:10:24] } 19... Qg5?! { [%eval -3.12] } { Inaccuracy. Qf7 was best. } { [%clk 0:07:38] } 20. d5 { [%eval -3.12] [%clk 0:09:49] } 20... Qg4 { [%eval -2.86] [%clk 0:05:49] } 21. dxe6 { [%eval -2.93] [%clk 0:09:00] } 21... Qf3+?? { [%eval 0.0] } { Blunder. Ng5 was best. } { [%clk 0:05:55] } 22. Kg1 { [%eval 0.0] [%clk 0:08:54] } 22... Ng5? { [%eval 1.51] } { Mistake. Rfe8 was best. } { [%clk 0:06:03] } 23. h4 { [%eval 1.79] [%clk 0:08:47] } 23... Nh3+? { [%eval 3.37] } { Mistake. Nxe6 was best. } { [%clk 0:05:37] } 24. Kh2 { [%eval 3.35] [%clk 0:08:54] } 24... Qg4?! { [%eval 4.21] } { Inaccuracy. Ng5 was best. } { [%clk 0:04:27] } 25. Bxf8 { [%eval 4.02] [%clk 0:08:42] } 25... Rxf8 { [%eval 4.42] [%clk 0:04:23] } 26. Qd1 { [%eval 5.05] [%clk 0:08:48] } 26... Re8 { [%eval 4.86] [%clk 0:03:57] } 27. Qd5?! { [%eval 3.37] } { Inaccuracy. Qxg4 was best. } { [%clk 0:08:14] } 27... f4 { [%eval 2.87] [%clk 0:03:02] } 28. e7+ { [%eval 1.97] [%clk 0:08:04] } 28... Kh7?? { [%eval 4.45] } { Blunder. Kh8 was best. } { [%clk 0:03:11] } 29. Qf7?? { [%eval -5.07] } { Blunder. Qxe4+ was best. } { [%clk 0:08:06] } 29... Nxf2 { [%eval -4.95] [%clk 0:01:50] } 30. Rxf2 { [%eval -4.82] [%clk 0:03:52] } 30... fxg3+ { [%eval -5.18] [%clk 0:01:49] } 31. Kg2 { [%eval -5.24] [%clk 0:03:40] } 31... gxf2+ { [%eval -5.11] [%clk 0:01:52] } 32. Kxf2 { [%eval -5.1] [%clk 0:03:47] } 32... Qxh4+ { [%eval -5.07] [%clk 0:02:00] } 33. Ke2 { [%eval -5.17] [%clk 0:03:05] } 33... Rxe7 { [%eval -4.95] [%clk 0:01:55] } 34. Qf1 { [%eval -5.37] [%clk 0:02:10] } 34... Qh2+ { [%eval -5.33] [%clk 0:01:15] } 35. Qf2 { [%eval -5.48] [%clk 0:02:13] } 35... Qxf2+ { [%eval -4.73] [%clk 0:01:12] } 36. Kxf2 { [%eval -4.62] [%clk 0:02:22] } 36... g5 { [%eval -4.97] [%clk 0:01:16] } 37. Rd1 { [%eval -5.0] [%clk 0:02:10] } 37... h5 { [%eval -4.75] [%clk 0:01:23] } 38. c5 { [%eval -5.25] [%clk 0:02:07] } 38... Kg6 { [%eval -4.85] [%clk 0:01:18] } 39. a5 { [%eval -5.61] [%clk 0:02:06] } 39... Kf5 { [%eval -4.89] [%clk 0:00:58] } 40. Rd8 { [%eval -5.36] [%clk 0:01:56] } 40... Ke6?! { [%eval -4.09] } { Inaccuracy. Kg4 was best. } { [%clk 0:00:27] } 41. Rh8?! { [%eval -5.29] } { Inaccuracy. Ra8 was best. } { [%clk 0:00:58] } 41... Kd5 { [%eval -5.1] [%clk 0:00:28] } 42. b6 { [%eval -5.48] [%clk 0:01:05] } 42... axb6 { [%eval -5.63] [%clk 0:00:29] } 43. cxb6 { [%eval -5.65] [%clk 0:01:11] } 43... cxb6 { [%eval -5.41] [%clk 0:00:36] } 44. axb6 { [%eval -5.57] [%clk 0:01:18] } 44... Kc6 { [%eval -4.89] [%clk 0:00:24] } 45. Rh6+ { [%eval -4.86] [%clk 0:01:23] } 45... Kd5 { [%eval -5.23] [%clk 0:00:27] } 46. Rxh5 { [%eval -5.25] [%clk 0:01:29] } 46... Re6 { [%eval -5.23] [%clk 0:00:37] } 47. Rxg5 { [%eval -5.11] [%clk 0:01:33] } 47... Rxb6 { [%eval -4.88] [%clk 0:00:45] } 48. Ke2?! { [%eval -6.23] } { Inaccuracy. Rg1 was best. } { [%clk 0:01:15] } 48... Rb2+ { [%eval -5.98] [%clk 0:00:54] } 49. Kd1 { [%eval -5.68] [%clk 0:01:24] } 49... b5 { [%eval -5.68] [%clk 0:01:02] } 50. Kc1 { [%eval -5.52] [%clk 0:01:22] } 50... Rb3 { [%eval -6.27] [%clk 0:01:09] } 51. Rg3 { [%eval -6.28] [%clk 0:01:18] } 51... b4 { [%eval -5.98] [%clk 0:01:08] } 52. Kc2 { [%eval -6.63] [%clk 0:01:15] } 52... Rd3 { [%eval -6.75] [%clk 0:01:00] } 53. Rh3 { [%eval -7.16] [%clk 0:01:01] } 53... Kc4 { [%eval -6.83] [%clk 0:01:06] } 54. Rh8 { [%eval -7.14] [%clk 0:00:53] } 54... b3+ { [%eval -6.92] [%clk 0:01:09] } 55. Kc1 { [%eval -6.99] [%clk 0:00:36] } 55... Rxe3 { [%eval -7.76] [%clk 0:01:17] } 56. Rc8+ { [%eval -7.64] [%clk 0:00:39] } 56... Kd3 { [%eval -7.18] [%clk 0:01:25] } 57. Re8 { [%eval -6.88] [%clk 0:00:31] } 57... Re2 { [%eval -6.92] [%clk 0:00:38] } 58. Rxe5?? { [%eval #-16] } { Checkmate is now unavoidable. Rd8+ was best. } { [%clk 0:00:34] } 58... Rc2+ { [%eval #-16] [%clk 0:00:38] } 59. Kd1 { [%eval #-16] [%clk 0:00:35] } 59... Rh2? { [%eval -9.57] } { Lost forced checkmate sequence. b2 was best. } { [%clk 0:00:28] } 60. Rd5+? { [%eval #-18] } { Checkmate is now unavoidable. Kc1 was best. } { [%clk 0:00:31] } 60... Kc4 { [%eval #-21] [%clk 0:00:37] } 61. Re5 { [%eval #-4] [%clk 0:00:36] } 61... b2 { [%eval #-3] [%clk 0:00:21] } 62. Rxe4+ { [%eval #-3] [%clk 0:00:45] } 62... Kc3 { [%eval #-4] [%clk 0:00:29] } 63. Re3+ { [%eval #-4] [%clk 0:00:41] } 63... Kb4 { [%eval #-7] [%clk 0:00:34] } 64. Re4+ { [%eval #-5] [%clk 0:00:26] } 64... Kb3 { [%eval #-7] [%clk 0:00:43] } 65. Re3+ { [%eval #-4] [%clk 0:00:23] } 65... Ka2 { [%eval #-10] [%clk 0:00:52] } 66. Re2 { [%eval #-10] [%clk 0:00:13] } 66... Rxe2 { [%eval #-9] [%clk 0:00:59] } 67. Kxe2 { [%eval #-9] [%clk 0:00:21] } 67... b1=Q { [%eval #-8] [%clk 0:01:05] } 68. Kd2 { [%eval #-5] [%clk 0:00:29] } 68... Kb3 { [%eval #-6] [%clk 0:01:13] } 69. Ke3 { [%eval #-6] [%clk 0:00:38] } 69... Qd1 { [%eval #-7] [%clk 0:01:22] } 70. Ke4 { [%eval #-7] [%clk 0:00:47] } 70... Qd2 { [%eval #-7] [%clk 0:01:31] } 71. Ke5 { [%eval #-7] [%clk 0:00:56] } 71... Qd3 { [%eval #-8] [%clk 0:01:39] } 72. Ke6 { [%eval #-8] [%clk 0:01:05] } 72... Qd4 { [%eval #-7] [%clk 0:01:48] } 73. Ke7 { [%eval #-7] [%clk 0:01:14] } 73... Qd5 { [%eval #-7] [%clk 0:01:57] } 74. Kf6 { [%eval #-7] [%clk 0:01:23] } 74... Kc4 { [%eval #-6] [%clk 0:02:06] } 75. Ke7 { [%eval #-6] [%clk 0:01:32] } 75... Qc6 { [%eval #-5] [%clk 0:02:15] } 76. Kf7 { [%eval #-5] [%clk 0:01:41] } 76... Qd6 { [%eval #-6] [%clk 0:02:24] } 77. Kg7 { [%eval #-6] [%clk 0:01:50] } 77... Qe6 { [%eval #-5] [%clk 0:02:33] } 78. Kf8 { [%eval #-5] [%clk 0:01:59] } 78... Qd7 { [%eval #-4] [%clk 0:02:43] } 79. Kg8 { [%eval #-4] [%clk 0:02:08] } 79... Kd5 { [%eval #-3] [%clk 0:02:52] } 80. Kf8 { [%eval #-3] [%clk 0:02:17] } 80... Ke6 { [%eval #-2] [%clk 0:03:01] } 81. Kg8 { [%eval #-2] [%clk 0:02:26] } 81... Kf6 { [%eval #-1] [%clk 0:03:10] } 82. Kh8 { [%eval #-1] [%clk 0:02:35] } 82... Qg7# { [%clk 0:03:18] } 0-1