Event: Round 4: Allen Leydenz, Christian Gabriel - Couchman, Kyle
Site: https://lichess.org/broadcast/fide-world-youth-u16-chess-olympiad-2025--matches-1-18/round-4/xNPOsGJh/eWa9shyy
White: Allen Leydenz, Christian Gabriel
WhiteElo: 2036
Black: Couchman, Kyle
BlackElo: 1857
Result: 1-0
ECO: B20
Opening: Sicilian Defense: Snyder Variation
Variant: Standard
TimeControl: 45+10

1. e4 { [%eval 0.18] [%clk 0:45:17] } 1... c5 { [%eval 0.24] [%clk 0:45:17] } 2. b3 { [%eval -0.15] [%clk 0:45:24] } 2... e6 { [%eval 0.1] [%clk 0:45:24] } 3. Bb2 { [%eval 0.08] [%clk 0:45:31] } 3... d5 { [%eval 0.17] [%clk 0:45:31] } 4. exd5 { [%eval 0.1] [%clk 0:45:28] } 4... exd5 { [%eval 0.14] [%clk 0:45:39] } 5. Nf3 { [%eval 0.1] [%clk 0:45:36] } 5... a6 { [%eval 0.15] [%clk 0:45:16] } 6. Be2 { [%eval -0.02] [%clk 0:45:43] } 6... Nf6 { [%eval 0.03] [%clk 0:45:18] } 7. O-O { [%eval -0.1] [%clk 0:45:43] } 7... d4 { [%eval 0.0] [%clk 0:45:18] } 8. Re1 { [%eval 0.19] [%clk 0:45:43] } 8... Be7 { [%eval 0.2] [%clk 0:45:18] } 9. a4 { [%eval -0.17] [%clk 0:45:43] } 9... O-O { [%eval -0.2] [%clk 0:45:18] } 10. Na3 { [%eval -0.21] [%clk 0:45:43] } 10... Nc6 { [%eval -0.26] [%clk 0:45:18] } 11. Nc4 { [%eval -0.31] [%clk 0:45:43] } 11... Bg4? { [%eval 1.03] } { Mistake. Re8 was best. } { [%clk 0:45:18] } 12. Nxd4 { [%eval 1.1] [%clk 0:41:39] } 12... Nxd4?! { [%eval 1.91] } { Inaccuracy. cxd4 was best. } { [%clk 0:41:52] } 13. Bxg4 { [%eval 1.7] [%clk 0:44:37] } 13... Nxg4 { [%eval 1.83] [%clk 0:39:21] } 14. Qxg4 { [%eval 1.91] [%clk 0:44:41] } 14... Bf6 { [%eval 2.06] [%clk 0:39:29] } 15. Bxd4 { [%eval 2.05] [%clk 0:42:37] } 15... Bxd4 { [%eval 2.08] [%clk 0:39:03] } 16. c3 { [%eval 2.26] [%clk 0:42:45] } 16... Bf6 { [%eval 2.11] [%clk 0:39:09] } 17. a5 { [%eval 1.97] [%clk 0:42:54] } 17... Qd3?! { [%eval 2.88] } { Inaccuracy. Qc7 was best. } { [%clk 0:37:25] } 18. Qe4 { [%eval 2.67] [%clk 0:40:19] } 18... Qxe4 { [%eval 2.78] [%clk 0:37:34] } 19. Rxe4 { [%eval 2.75] [%clk 0:40:28] } 19... Rad8 { [%eval 2.73] [%clk 0:37:42] } 20. Rae1 { [%eval 2.7] [%clk 0:40:27] } 20... g6 { [%eval 2.63] [%clk 0:37:42] } 21. Kf1 { [%eval 2.78] [%clk 0:38:47] } 21... Kg7 { [%eval 2.83] [%clk 0:36:57] } 22. R1e3 { [%eval 2.68] [%clk 0:38:54] } 22... Bg5 { [%eval 2.76] [%clk 0:36:41] } 23. Re2 { [%eval 2.76] [%clk 0:38:36] } 23... Rd3? { [%eval 4.48] } { Mistake. Rd5 was best. } { [%clk 0:36:14] } 24. Re5 { [%eval 4.4] [%clk 0:38:05] } 24... Bf4 { [%eval 4.53] [%clk 0:35:22] } 25. Rxc5 { [%eval 4.41] [%clk 0:36:53] } 25... Rfd8 { [%eval 4.34] [%clk 0:35:29] } 26. g3 { [%eval 4.38] [%clk 0:36:17] } 26... Bxd2 { [%eval 4.64] [%clk 0:35:08] } 27. Rxd2 { [%eval 4.45] [%clk 0:36:26] } 27... Rxd2 { [%eval 4.57] [%clk 0:35:16] } 28. Nxd2 { [%eval 4.39] [%clk 0:36:35] } 28... Rxd2 { [%eval 4.2] [%clk 0:35:24] } 29. Rc7 { [%eval 4.05] [%clk 0:36:44] } 29... Rc2 { [%eval 4.99] [%clk 0:31:16] } 30. c4 { [%eval 4.85] [%clk 0:36:51] } 30... Ra2 { [%eval 5.26] [%clk 0:31:09] } 31. b4 { [%eval 5.18] [%clk 0:36:59] } 31... b6?! { [%eval 7.76] } { Inaccuracy. Kf6 was best. } { [%clk 0:29:52] } 32. axb6 { [%eval 7.53] [%clk 0:37:05] } 32... Rb2 { [%eval 7.95] [%clk 0:29:59] } 33. b5 { [%eval 7.81] [%clk 0:36:48] } 33... axb5 { [%eval 8.19] [%clk 0:29:59] } 34. c5 { [%eval 7.89] [%clk 0:36:57] } 34... Rb1+ { [%eval 8.87] [%clk 0:28:30] } 35. Kg2 { [%eval 8.38] [%clk 0:37:05] } 35... b4? { [%eval #12] } { Checkmate is now unavoidable. Kh6 was best. } { [%clk 0:28:09] } 36. b7 { [%eval 12.5] [%clk 0:37:14] } 36... b3?! { [%eval #8] } { Checkmate is now unavoidable. Re1 was best. } { [%clk 0:28:17] } 37. b8=Q { [%eval #7] [%clk 0:37:23] } 37... b2 { [%eval #7] [%clk 0:28:26] } 38. Rb7?! { [%eval 78.5] } { Lost forced checkmate sequence. Kh3 was best. } { [%clk 0:37:27] } 38... Rc1?! { [%eval #6] } { Checkmate is now unavoidable. Re1 was best. } { [%clk 0:28:29] } 39. Qe5+ { [%eval #5] [%clk 0:37:35] } 39... Kh6 { [%eval #5] [%clk 0:28:35] } 40. Rxb2 { [%eval #5] [%clk 0:37:32] } 40... Rc4 { [%eval #5] [%clk 0:28:43] } 41. Rb7 { [%eval #4] [%clk 0:37:36] } 41... f5 { [%eval #4] [%clk 0:28:14] } 42. Qg7+ { [%eval #3] [%clk 0:37:41] } 42... Kg5 { [%eval #3] [%clk 0:28:23] } 43. Qe7+ { [%eval #3] [%clk 0:37:51] } 43... Kh6 { [%eval #2] [%clk 0:28:26] } 44. Qxh7+ { [%eval #2] [%clk 0:37:58] } 44... Kg5 { [%eval #2] [%clk 0:28:33] } 45. Qe7+ { [%eval #2] [%clk 0:38:03] } 45... Kh5 { [%eval #2] [%clk 0:28:32] } 46. Qe2+ { [%eval #4] [%clk 0:38:11] } 46... Rg4 { [%eval #2] [%clk 0:28:27] } 47. Rh7+ { [%eval #1] [%clk 0:38:19] } 47... Kg5 { [%eval #1] [%clk 0:28:35] } 48. Qe7# { [%clk 0:38:28] } 1-0