Event: Round 4: Sierra Castillo, Eyber - Otero Portillo, Daniel Alejandro
Site: https://lichess.org/broadcast/final-nacional-colombia-intercolegiados-blitz-2025--juvenil-masculino/round-4/dRUOPKrL/rCZiUCjI
Date: 2025-10-28
White: Sierra Castillo, Eyber
WhiteElo: 1702
Black: Otero Portillo, Daniel Alejandro
BlackElo: 1672
Result: 1-0
ECO: B13
Opening: Caro-Kann Defense: Exchange Variation
Variant: Standard
TimeControl: 4+2

1. e4 { [%eval 0.18] [%clk 0:04:03] } 1... c6 { [%eval 0.23] [%clk 0:04:03] } 2. d4 { [%eval 0.24] [%clk 0:04:03] } 2... d5 { [%eval 0.24] [%clk 0:04:04] } 3. exd5 { [%eval 0.08] [%clk 0:04:03] } 3... cxd5 { [%eval 0.18] [%clk 0:04:05] } 4. Be3 { [%eval 0.0] [%clk 0:04:03] } 4... Nf6 { [%eval 0.0] [%clk 0:04:05] } 5. Bd3 { [%eval 0.0] [%clk 0:04:04] } 5... Bg4 { [%eval 0.0] [%clk 0:04:06] } 6. f3 { [%eval -0.17] [%clk 0:04:02] } 6... Bh5 { [%eval -0.08] [%clk 0:04:07] } 7. Ne2 { [%eval 0.0] [%clk 0:04:01] } 7... e6 { [%eval 0.01] [%clk 0:04:06] } 8. Nbc3 { [%eval -0.15] [%clk 0:04:00] } 8... a6 { [%eval -0.15] [%clk 0:04:06] } 9. a3 { [%eval -0.31] [%clk 0:04:01] } 9... Bd6 { [%eval -0.29] [%clk 0:04:05] } 10. Nf4 { [%eval -0.3] [%clk 0:03:56] } 10... Nc6 { [%eval 0.0] [%clk 0:03:49] } 11. Nxh5 { [%eval -0.06] [%clk 0:03:54] } 11... Nxh5 { [%eval -0.13] [%clk 0:03:50] } 12. Qd2 { [%eval -0.08] [%clk 0:03:51] } 12... Rc8 { [%eval -0.07] [%clk 0:03:43] } 13. g4 { [%eval -0.21] [%clk 0:03:48] } 13... Nf6 { [%eval -0.3] [%clk 0:03:42] } 14. h4 { [%eval -0.54] [%clk 0:03:48] } 14... h6?! { [%eval 0.15] } { Inaccuracy. O-O was best. } { [%clk 0:03:40] } 15. O-O-O { [%eval 0.16] [%clk 0:03:44] } 15... Na5 { [%eval 0.44] [%clk 0:03:28] } 16. g5 { [%eval 0.36] [%clk 0:03:45] } 16... hxg5?! { [%eval 1.05] } { Inaccuracy. Nh5 was best. } { [%clk 0:03:07] } 17. hxg5 { [%eval 1.13] [%clk 0:03:42] } 17... Rxh1 { [%eval 1.69] [%clk 0:03:07] } 18. Rxh1 { [%eval 1.54] [%clk 0:03:42] } 18... Nd7 { [%eval 1.61] [%clk 0:03:04] } 19. f4?! { [%eval 1.01] } { Inaccuracy. g6 was best. } { [%clk 0:03:34] } 19... Nc4?! { [%eval 2.03] } { Inaccuracy. g6 was best. } { [%clk 0:03:00] } 20. Bxc4 { [%eval 1.96] [%clk 0:03:34] } 20... Rxc4 { [%eval 2.16] [%clk 0:03:00] } 21. f5 { [%eval 2.13] [%clk 0:03:35] } 21... b5 { [%eval 2.63] [%clk 0:02:38] } 22. fxe6 { [%eval 2.55] [%clk 0:03:30] } 22... fxe6 { [%eval 2.46] [%clk 0:02:38] } 23. Bf4 { [%eval 2.35] [%clk 0:03:31] } 23... Bxf4?! { [%eval 3.05] } { Inaccuracy. Nf8 was best. } { [%clk 0:02:27] } 24. Qxf4 { [%eval 2.96] [%clk 0:03:31] } 24... Ke7?? { [%eval 7.74] } { Blunder. Qb6 was best. } { [%clk 0:02:03] } 25. Re1?? { [%eval 3.22] } { Blunder. Nxd5+ was best. } { [%clk 0:02:49] } 25... Qf8 { [%eval 3.26] [%clk 0:01:57] } 26. Nxd5+ { [%eval 3.18] [%clk 0:02:27] } 26... Kd8 { [%eval 3.03] [%clk 0:01:48] } 27. Qxf8+ { [%eval 3.14] [%clk 0:02:21] } 27... Nxf8 { [%eval 3.03] [%clk 0:01:49] } 28. Nf4 { [%eval 3.14] [%clk 0:02:19] } 28... Kd7 { [%eval 3.14] [%clk 0:01:38] } 29. c3 { [%eval 2.8] [%clk 0:02:16] } 29... Rc8?! { [%eval 3.78] } { Inaccuracy. Kd6 was best. } { [%clk 0:01:29] } 30. Nh5 { [%eval 3.5] [%clk 0:02:07] } 30... Nh7 { [%eval 3.48] [%clk 0:01:10] } 31. g6 { [%eval 3.32] [%clk 0:02:06] } 31... Nf8?! { [%eval 4.4] } { Inaccuracy. Ng5 was best. } { [%clk 0:01:08] } 32. Nxg7 { [%eval 3.84] [%clk 0:02:04] } 32... Rc6?! { [%eval 5.02] } { Inaccuracy. e5 was best. } { [%clk 0:00:51] } 33. Rg1 { [%eval 3.25] [%clk 0:01:52] } 33... e5 { [%eval 3.55] [%clk 0:00:51] } 34. dxe5 { [%eval 3.2] [%clk 0:01:38] } 34... Nxg6? { [%eval 6.38] } { Mistake. Rxg6 was best. } { [%clk 0:00:48] } 35. e6+ { [%eval 6.32] [%clk 0:01:38] } 35... Rxe6 { [%eval 6.38] [%clk 0:00:44] } 36. Nxe6 { [%eval 6.17] [%clk 0:01:38] } 36... Kxe6?? { [%eval #17] } { Checkmate is now unavoidable. Ne5 was best. } { [%clk 0:00:45] } 37. Rxg6+ { [%eval #16] [%clk 0:01:39] } 37... Kd5 { [%eval #15] [%clk 0:00:46] } 38. Rxa6 { [%eval #13] [%clk 0:01:39] } 38... Kc5 { [%eval #13] [%clk 0:00:47] } 39. Kc2 { [%eval #13] [%clk 0:01:38] } 39... Kc4 { [%eval #13] [%clk 0:00:47] } 40. b3+ { [%eval #12] [%clk 0:01:37] } 40... Kc5 { [%eval #14] [%clk 0:00:48] } 41. b4+ { [%eval #13] [%clk 0:01:35] } 41... Kd5 { [%eval #13] [%clk 0:00:47] } 42. a4 { [%eval #12] [%clk 0:01:33] } 42... bxa4 { [%eval #12] [%clk 0:00:47] } 43. Rxa4 { [%eval #10] [%clk 0:01:34] } 43... Kc4 { [%eval #10] [%clk 0:00:47] } 44. Ra8 { [%eval #10] [%clk 0:01:28] } 44... Kb5 { [%eval #11] [%clk 0:00:48] } 45. Kb3 { [%eval #10] [%clk 0:01:28] } 45... Kb6 { [%eval #10] [%clk 0:00:48] } 46. Rh8 { [%eval #10] [%clk 0:01:26] } 46... Kb5 { [%eval #9] [%clk 0:00:49] } 47. c4+ { [%eval #8] [%clk 0:01:27] } 47... Kb6 { [%eval #8] [%clk 0:00:50] } 48. Rh6+ { [%eval #7] [%clk 0:01:28] } 48... Kc7 { [%eval #7] [%clk 0:00:51] } 49. c5 { [%eval #7] [%clk 0:01:28] } 49... Kb7 { [%eval #6] [%clk 0:00:52] } 50. b5 { [%eval #5] [%clk 0:01:29] } 50... Kc7 { [%eval #5] [%clk 0:00:54] } 51. Rh7+ { [%eval #4] [%clk 0:01:29] } 51... Kc8 { [%eval #3] [%clk 0:00:55] } 52. c6 { [%eval #3] [%clk 0:01:30] } 52... Kd8 { [%eval #3] [%clk 0:00:56] } 53. b6 { [%eval #2] [%clk 0:01:30] } 53... Ke8 { [%eval #2] [%clk 0:00:57] } 54. b7 { [%eval #1] [%clk 0:01:30] } 54... Kf8 { [%eval #1] [%clk 0:00:58] } 55. b8=Q# { [%clk 0:01:30] } 1-0