Event: FIDE World Youth U16 Chess Olympiad 2025
Site: https://lichess.org/broadcast/fide-world-youth-u16-chess-olympiad-2025--matches-19/round-6/t12a3W7l/0bYcvl4u
White: Morales Arrieta, Juan
Black: Koolman, Colin Kyle Deniel
Result: 0-1
ECO: D02
Opening: Queen's Pawn Game: London System
Variant: Standard
TimeControl: 2700+10

1. d4 { [%eval 0.17] [%clk 0:45:09] } 1... Nf6 { [%eval 0.19] [%clk 0:45:03] } 2. Bf4 { [%eval 0.0] [%clk 0:45:13] } 2... d5 { [%eval 0.05] [%clk 0:44:21] } 3. Nf3 { [%eval 0.02] [%clk 0:45:14] } 3... g6 { [%eval 0.2] [%clk 0:43:56] } 4. Qd2 { [%eval -0.21] [%clk 0:45:06] } 4... Nc6 { [%eval 0.28] [%clk 0:42:41] } 5. c3 { [%eval -0.18] [%clk 0:44:46] } 5... Bf5 { [%eval 0.0] [%clk 0:40:38] } 6. e3 { [%eval -0.03] [%clk 0:44:30] } 6... Bg7 { [%eval 0.2] [%clk 0:39:13] } 7. Bd3 { [%eval 0.18] [%clk 0:44:12] } 7... Ne4 { [%eval 0.19] [%clk 0:37:33] } 8. Qc2 { [%eval 0.3] [%clk 0:43:22] } 8... O-O { [%eval 0.35] [%clk 0:37:20] } 9. Nbd2 { [%eval 0.45] [%clk 0:43:19] } 9... Nd6 { [%eval 0.8] [%clk 0:33:38] } 10. Bxd6?! { [%eval -0.02] } { Inaccuracy. Bxf5 was best. } { [%clk 0:43:11] } 10... Bxd3 { [%eval 0.02] [%clk 0:33:39] } 11. Qxd3 { [%eval 0.04] [%clk 0:43:14] } 11... Qxd6 { [%eval -0.02] [%clk 0:33:36] } 12. O-O { [%eval -0.07] [%clk 0:42:52] } 12... e5 { [%eval -0.07] [%clk 0:33:31] } 13. Qb5 { [%eval -0.52] [%clk 0:41:42] } 13... Rab8 { [%eval -0.09] [%clk 0:31:55] } 14. dxe5 { [%eval -0.01] [%clk 0:40:34] } 14... Nxe5 { [%eval -0.08] [%clk 0:31:06] } 15. Rad1 { [%eval -0.16] [%clk 0:40:07] } 15... c6 { [%eval -0.2] [%clk 0:30:15] } 16. Qa4 { [%eval -0.15] [%clk 0:39:18] } 16... a6 { [%eval -0.15] [%clk 0:29:14] } 17. Qf4 { [%eval -0.22] [%clk 0:38:16] } 17... Kh8 { [%eval -0.07] [%clk 0:25:13] } 18. Kh1 { [%eval -0.17] [%clk 0:37:33] } 18... Rbe8 { [%eval -0.16] [%clk 0:23:37] } 19. Nc4 { [%eval -0.16] [%clk 0:33:27] } 19... Qb8 { [%eval 0.05] [%clk 0:23:03] } 20. Ncxe5 { [%eval 0.02] [%clk 0:31:38] } 20... Bxe5 { [%eval 0.02] [%clk 0:23:03] } 21. Nxe5 { [%eval 0.06] [%clk 0:31:42] } 21... Rxe5 { [%eval 0.03] [%clk 0:22:33] } 22. Qb4 { [%eval 0.04] [%clk 0:31:27] } 22... Rh5 { [%eval 0.09] [%clk 0:21:57] } 23. h3 { [%eval 0.16] [%clk 0:31:27] } 23... g5?? { [%eval 2.09] } { Blunder. Re8 was best. } { [%clk 0:21:57] } 24. Qg4 { [%eval 2.08] [%clk 0:31:16] } 24... Rh6 { [%eval 2.05] [%clk 0:21:26] } 25. Qxg5 { [%eval 1.99] [%clk 0:30:44] } 25... Qd6 { [%eval 2.01] [%clk 0:20:31] } 26. Rd4 { [%eval 2.05] [%clk 0:30:06] } 26... Rg8 { [%eval 2.08] [%clk 0:20:27] } 27. Qf4 { [%eval 2.06] [%clk 0:29:16] } 27... Qe6 { [%eval 2.14] [%clk 0:19:27] } 28. Qf3 { [%eval 2.12] [%clk 0:28:26] } 28... Rg5 { [%eval 2.08] [%clk 0:15:25] } 29. Kh2 { [%eval 1.85] [%clk 0:25:31] } 29... Rhg6 { [%eval 1.9] [%clk 0:12:24] } 30. g3 { [%eval 1.82] [%clk 0:25:10] } 30... Rh6 { [%eval 1.91] [%clk 0:11:27] } 31. h4 { [%eval 1.91] [%clk 0:25:03] } 31... Rgh5 { [%eval 2.5] [%clk 0:10:19] } 32. Re1 { [%eval 1.88] [%clk 0:23:58] } 32... Qd6? { [%eval 3.94] } { Mistake. Rf5 was best. } { [%clk 0:08:57] } 33. Kg2 { [%eval 3.19] [%clk 0:23:33] } 33... Qg6 { [%eval 3.75] [%clk 0:08:18] } 34. Qg4?! { [%eval 2.39] } { Inaccuracy. Rg4 was best. } { [%clk 0:22:40] } 34... Qc2? { [%eval 4.41] } { Mistake. Qxg4 was best. } { [%clk 0:05:52] } 35. Qc8+ { [%eval 4.33] [%clk 0:21:07] } 35... Kg7 { [%eval 3.92] [%clk 0:05:52] } 36. Qxb7 { [%eval 3.89] [%clk 0:21:09] } 36... Rf6 { [%eval 4.28] [%clk 0:03:36] } 37. Rf1? { [%eval 2.66] } { Mistake. Rg4+ was best. } { [%clk 0:20:50] } 37... c5?! { [%eval 3.5] } { Inaccuracy. Qe2 was best. } { [%clk 0:02:18] } 38. Rxd5?? { [%eval -4.21] } { Blunder. Rg4+ was best. } { [%clk 0:20:29] } 38... Qe4+ { [%eval -4.33] [%clk 0:02:09] } 39. f3 { [%eval -4.28] [%clk 0:20:11] } 39... Qxd5 { [%eval -4.29] [%clk 0:02:03] } 40. Qxa6?? { [%eval #-14] } { Checkmate is now unavoidable. Qxd5 was best. } { [%clk 0:20:07] } 40... Qd2+?? { [%eval -5.87] } { Lost forced checkmate sequence. Rxa6 was best. } { [%clk 0:02:02] } 41. Rf2 { [%eval -5.84] [%clk 0:20:10] } 41... Qxe3?! { [%eval -4.08] } { Inaccuracy. Qxf2+ was best. } { [%clk 0:01:59] } 42. Qc4 { [%eval -4.41] [%clk 0:19:44] } 42... Qe5 { [%eval -4.1] [%clk 0:01:22] } 43. Re2 { [%eval -4.5] [%clk 0:19:40] } 43... Qd6 { [%eval -4.52] [%clk 0:01:15] } 44. Qg4+?! { [%eval -5.89] } { Inaccuracy. b4 was best. } { [%clk 0:19:28] } 44... Rg6 { [%eval -5.82] [%clk 0:01:21] } 45. Qh3 { [%eval -5.63] [%clk 0:17:51] } 45... Qf6 { [%eval -4.68] [%clk 0:01:11] } 46. g4 { [%eval -4.62] [%clk 0:17:20] } 46... Re5 { [%eval -4.49] [%clk 0:01:06] } 47. Rd2?! { [%eval -5.8] } { Inaccuracy. Rxe5 was best. } { [%clk 0:17:10] } 47... Qf4 { [%eval -5.27] [%clk 0:01:13] } 48. b3?? { [%eval #-7] } { Checkmate is now unavoidable. Rf2 was best. } { [%clk 0:16:46] } 48... Qxd2+ { [%eval #-6] [%clk 0:01:19] } 0-1