Event: Round 6: Costa, Leopoldino - Mnyasta, Charlton
Site: https://lichess.org/broadcast/2025-african-junior-chess-championship-open/round-6/FFU1Hx1n/Bc6H8etY
Date: 2025-09-22
White: Costa, Leopoldino
WhiteElo: 1914
Black: Mnyasta, Charlton
BlackElo: 2172
Result: 1-0
ECO: B50
Opening: Sicilian Defense: Modern Variations
Variant: Standard

1. e4 { [%eval 0.18] [%clk 1:28:14] } 1... c5 { [%eval 0.24] [%clk 1:30:55] } 2. Nf3 { [%eval 0.2] [%clk 1:28:21] } 2... d6 { [%eval 0.31] [%clk 1:31:20] } 3. c4 { [%eval 0.0] [%clk 1:28:28] } 3... Nf6 { [%eval 0.07] [%clk 1:31:17] } 4. Nc3 { [%eval 0.07] [%clk 1:28:48] } 4... Bg4 { [%eval 0.08] [%clk 1:26:30] } 5. d4 { [%eval 0.12] [%clk 1:28:17] } 5... cxd4 { [%eval 0.04] [%clk 1:25:38] } 6. Qxd4 { [%eval 0.11] [%clk 1:28:39] } 6... Bxf3 { [%eval 0.08] [%clk 1:25:29] } 7. gxf3 { [%eval 0.26] [%clk 1:29:00] } 7... Nc6 { [%eval 0.21] [%clk 1:25:55] } 8. Qd3 { [%eval 0.29] [%clk 1:26:54] } 8... Rc8 { [%eval 0.58] [%clk 1:25:14] } 9. f4 { [%eval 0.68] [%clk 1:17:57] } 9... Nd7 { [%eval 1.09] [%clk 1:24:37] } 10. Be3 { [%eval 1.12] [%clk 1:17:23] } 10... Nc5 { [%eval 1.18] [%clk 1:21:05] } 11. Qd2 { [%eval 1.29] [%clk 1:08:34] } 11... g6 { [%eval 1.13] [%clk 1:17:09] } 12. O-O-O?! { [%eval 0.42] } { Inaccuracy. Bh3 was best. } { [%clk 1:08:18] } 12... Bg7 { [%eval 0.56] [%clk 1:16:18] } 13. e5 { [%eval 0.46] [%clk 1:01:44] } 13... Nb4?! { [%eval 1.05] } { Inaccuracy. O-O was best. } { [%clk 0:59:08] } 14. Kb1?! { [%eval 0.0] } { Inaccuracy. Qe2 was best. } { [%clk 0:49:25] } 14... Qd7 { [%eval 0.0] [%clk 0:59:20] } 15. Bxc5 { [%eval 0.0] [%clk 0:47:43] } 15... Rxc5?? { [%eval 2.81] } { Blunder. Qf5+ was best. } { [%clk 0:56:59] } 16. Ne4 { [%eval 2.7] [%clk 0:41:37] } 16... Qf5 { [%eval 3.2] [%clk 0:53:39] } 17. f3 { [%eval 3.11] [%clk 0:41:16] } 17... a5?! { [%eval 4.69] } { Inaccuracy. Nc6 was best. } { [%clk 0:51:13] } 18. a3?! { [%eval 3.39] } { Inaccuracy. exd6 was best. } { [%clk 0:41:00] } 18... Na6?! { [%eval 4.45] } { Inaccuracy. Nc6 was best. } { [%clk 0:51:38] } 19. Bd3 { [%eval 3.68] [%clk 0:41:21] } 19... Qd7 { [%eval 4.08] [%clk 0:51:49] } 20. Nxc5 { [%eval 4.05] [%clk 0:41:13] } 20... Nxc5 { [%eval 3.89] [%clk 0:52:13] } 21. Qxa5 { [%eval 3.97] [%clk 0:40:51] } 21... O-O { [%eval 3.89] [%clk 0:52:29] } 22. Bc2 { [%eval 3.76] [%clk 0:40:22] } 22... Qe6 { [%eval 4.43] [%clk 0:50:39] } 23. Rd5 { [%eval 4.33] [%clk 0:37:37] } 23... Qh3 { [%eval 4.18] [%clk 0:50:59] } 24. exd6 { [%eval 4.27] [%clk 0:32:30] } 24... exd6 { [%eval 4.35] [%clk 0:51:06] } 25. Rxd6 { [%eval 4.33] [%clk 0:31:45] } 25... Qxf3 { [%eval 4.22] [%clk 0:50:26] } 26. Rhd1 { [%eval 4.21] [%clk 0:31:26] } 26... Ne4 { [%eval 4.15] [%clk 0:48:24] } 27. Qd5 { [%eval 4.18] [%clk 0:31:39] } 27... Nc3+ { [%eval 3.93] [%clk 0:47:14] } 28. bxc3 { [%eval 4.01] [%clk 0:31:27] } 28... Qxc3 { [%eval 3.6] [%clk 0:47:38] } 29. Kc1?? { [%eval 0.0] } { Blunder. Rd4 was best. } { [%clk 0:31:05] } 29... Qxa3+ { [%eval 0.0] [%clk 0:47:20] } 30. Kd2 { [%eval 0.0] [%clk 0:31:07] } 30... Qc3+ { [%eval 0.0] [%clk 0:44:26] } 31. Ke2 { [%eval -0.01] [%clk 0:28:25] } 31... Qxc2+ { [%eval -0.03] [%clk 0:44:42] } 32. Rd2 { [%eval -0.11] [%clk 0:28:35] } 32... Re8+ { [%eval 0.0] [%clk 0:43:56] } 33. Kf2 { [%eval 0.0] [%clk 0:28:35] } 33... Qe4?? { [%eval 3.08] } { Blunder. Qc1 was best. } { [%clk 0:39:11] } 34. Qxe4 { [%eval 3.14] [%clk 0:28:34] } 34... Rxe4 { [%eval 2.84] [%clk 0:39:33] } 35. Rd8+ { [%eval 3.13] [%clk 0:28:37] } 35... Bf8 { [%eval 3.1] [%clk 0:39:57] } 36. Re2 { [%eval 2.95] [%clk 0:28:50] } 36... Rxe2+?! { [%eval 4.12] } { Inaccuracy. Rxf4+ was best. } { [%clk 0:38:49] } 37. Kxe2 { [%eval 4.55] [%clk 0:29:12] } 37... Kg7 { [%eval 4.48] [%clk 0:39:11] } 38. Rb8 { [%eval 4.36] [%clk 0:27:39] } 38... Bd6 { [%eval 4.06] [%clk 0:39:34] } 39. Rxb7 { [%eval 4.12] [%clk 0:28:08] } 39... Bxf4 { [%eval 4.4] [%clk 0:39:54] } 40. h3 { [%eval 4.18] [%clk 0:26:33] } 40... Kf6 { [%eval 4.34] [%clk 0:40:16] } 41. c5 { [%eval 3.83] [%clk 0:26:37] } 41... Ke6 { [%eval 4.32] [%clk 0:40:37] } 42. c6 { [%eval 3.99] [%clk 0:26:30] } 42... h5 { [%eval 4.36] [%clk 0:40:35] } 43. Kf3 { [%eval 3.55] [%clk 0:26:19] } 43... g5? { [%eval 5.71] } { Mistake. Be5 was best. } { [%clk 0:40:30] } 44. h4 { [%eval 6.48] [%clk 0:23:17] } 44... Bd2 { [%eval 8.62] [%clk 0:36:04] } 45. Rxf7 { [%eval 9.49] [%clk 0:22:48] } 45... Kxf7 { [%eval 7.38] [%clk 0:36:22] } 46. c7 { [%eval 6.26] [%clk 0:23:14] } 1-0