Event: Biel Chess Festival 2025 MTO
Site: Biel, Switzerland
Date: 2025-07-21
White: Marcenaro, Alessandro
WhiteElo: 2160
Black: Federer, Colin
BlackTitle: FM
BlackElo: 2303
Result: 0-1
ECO: B90
Opening: Sicilian Defense: Najdorf Variation
Variant: Standard
TimeControl: 100 min 40 moves + 30 min Rest + 30 sec per move

1. e4 { [%eval 0.18] [%clk 1:40:50] } 1... c5 { [%eval 0.25] [%clk 1:40:46] } 2. Nf3 { [%eval 0.2] [%clk 1:41:02] } 2... d6 { [%eval 0.31] [%clk 1:41:07] } 3. d4 { [%eval 0.22] [%clk 1:41:15] } 3... cxd4 { [%eval 0.19] [%clk 1:41:26] } 4. Nxd4 { [%eval 0.18] [%clk 1:41:27] } 4... Nf6 { [%eval 0.31] [%clk 1:41:47] } 5. Nc3 { [%eval 0.32] [%clk 1:41:46] } 5... a6 { [%eval 0.28] [%clk 1:42:09] } 6. f3 { [%eval 0.13] [%clk 1:41:40] } 6... e5 { [%eval 0.4] [%clk 1:42:20] } 7. Nb3 { [%eval 0.24] [%clk 1:41:58] } 7... Be6 { [%eval 0.19] [%clk 1:42:32] } 8. Be3 { [%eval 0.39] [%clk 1:42:13] } 8... h5 { [%eval 0.44] [%clk 1:42:40] } 9. Nd5 { [%eval 0.44] [%clk 1:41:36] } 9... Bxd5 { [%eval 0.5] [%clk 1:42:57] } 10. exd5 { [%eval 0.51] [%clk 1:41:59] } 10... Nbd7 { [%eval 0.37] [%clk 1:43:12] } 11. Qd2 { [%eval 0.47] [%clk 1:42:14] } 11... g6 { [%eval 0.49] [%clk 1:43:18] } 12. O-O-O { [%eval 0.5] [%clk 1:40:54] } 12... Bg7 { [%eval 0.51] [%clk 1:43:08] } 13. Kb1 { [%eval 0.4] [%clk 1:40:34] } 13... Qc7 { [%eval 0.34] [%clk 1:42:51] } 14. Be2 { [%eval 0.41] [%clk 1:36:26] } 14... O-O { [%eval 0.2] [%clk 1:42:20] } 15. g4 { [%eval 0.28] [%clk 1:22:46] } 15... Rfc8 { [%eval 0.31] [%clk 1:35:02] } 16. g5?? { [%eval -2.02] } { Blunder. Rc1 was best. } { [%clk 1:10:32] } 16... Ne8?? { [%eval 0.96] } { Blunder. Nxd5 was best. } { [%clk 1:31:07] } 17. c4?! { [%eval 0.18] } { Inaccuracy. Rhe1 was best. } { [%clk 1:03:38] } 17... a5 { [%eval 0.31] [%clk 1:34:02] } 18. Rc1?! { [%eval -0.68] } { Inaccuracy. a3 was best. } { [%clk 1:02:34] } 18... b6? { [%eval 0.54] } { Mistake. a4 was best. } { [%clk 1:20:51] } 19. Na1?! { [%eval -0.48] } { Inaccuracy. Qc2 was best. } { [%clk 0:41:24] } 19... Nc5 { [%eval -0.37] [%clk 1:14:40] } 20. Nc2 { [%eval -0.41] [%clk 0:46:28] } 20... Qd7 { [%eval -0.31] [%clk 1:11:38] } 21. Na3 { [%eval -0.46] [%clk 0:40:45] } 21... Nc7 { [%eval -0.47] [%clk 1:06:19] } 22. Rhf1?! { [%eval -1.11] } { Inaccuracy. Bd3 was best. } { [%clk 0:35:49] } 22... Re8 { [%eval -1.06] [%clk 1:02:10] } 23. Rce1 { [%eval -0.87] [%clk 0:29:14] } 23... e4 { [%eval -1.07] [%clk 0:54:52] } 24. f4 { [%eval -1.14] [%clk 0:21:43] } 24... Na4? { [%eval 0.03] } { Mistake. Qf5 was best. } { [%clk 0:45:19] } 25. Bd4 { [%eval 0.0] [%clk 0:25:06] } 25... e3 { [%eval 0.0] [%clk 0:43:28] } 26. Qd1 { [%eval 0.07] [%clk 0:23:50] } 26... Nc5 { [%eval 0.32] [%clk 0:33:19] } 27. Bxg7 { [%eval 0.36] [%clk 0:16:28] } 27... Kxg7 { [%eval 0.34] [%clk 0:35:00] } 28. f5 { [%eval 0.57] [%clk 0:13:40] } 28... Re5 { [%eval 0.56] [%clk 0:32:41] } 29. Qd4 { [%eval 0.44] [%clk 0:09:16] } 29... gxf5? { [%eval 2.08] } { Mistake. Re8 was best. } { [%clk 0:23:43] } 30. Nc2 { [%eval 2.3] [%clk 0:08:11] } 30... Kg8 { [%eval 2.01] [%clk 0:20:02] } 31. Nxe3?! { [%eval 0.94] } { Inaccuracy. Bxh5 was best. } { [%clk 0:03:52] } 31... Rae8 { [%eval 1.16] [%clk 0:18:41] } 32. Bd3?? { [%eval -1.59] } { Blunder. Bxh5 was best. } { [%clk 0:03:19] } 32... f4? { [%eval -0.28] } { Mistake. Nxd3 was best. } { [%clk 0:16:02] } 33. Nc2? { [%eval -1.63] } { Mistake. Rxf4 was best. } { [%clk 0:03:02] } 33... Rxe1+? { [%eval 0.0] } { Mistake. Nxd3 was best. } { [%clk 0:07:43] } 34. Rxe1?? { [%eval -2.23] } { Blunder. Nxe1 was best. } { [%clk 0:02:44] } 34... Qh3 { [%eval -2.13] [%clk 0:05:45] } 35. Rd1 { [%eval -1.74] [%clk 0:01:54] } 35... Qxh2? { [%eval -0.15] } { Mistake. Qf3 was best. } { [%clk 0:03:48] } 36. g6 { [%eval -0.07] [%clk 0:01:21] } 36... Re5 { [%eval -0.17] [%clk 0:02:31] } 37. gxf7+ { [%eval -0.12] [%clk 0:01:07] } 37... Kxf7 { [%eval -0.19] [%clk 0:02:47] } 38. Rf1 { [%eval -0.19] [%clk 0:00:43] } 38... Ke7 { [%eval -0.11] [%clk 0:01:41] } 39. Ne1?? { [%eval -3.23] } { Blunder. b4 was best. } { [%clk 0:00:43] } 39... Qd2 { [%eval -2.86] [%clk 0:01:25] } 40. Qxf4? { [%eval -5.13] } { Mistake. Qc3 was best. } { [%clk 0:00:31] } 40... Qxf4 { [%eval -5.1] [%clk 0:01:47] } 41. Rxf4 { [%eval -5.05] [%clk 0:00:34] } 41... Rxe1+ { [%eval -5.03] [%clk 0:02:08] } 42. Kc2 { [%eval -5.27] [%clk 0:00:08] } 42... Nxd3 { [%eval -5.31] [%clk 0:02:04] } 43. Kxd3 { [%eval -5.12] [%clk 0:01:14] } 43... Na6 { [%eval -5.2] [%clk 0:01:54] } 44. Rh4 { [%eval -4.91] [%clk 0:01:12] } 44... Nc5+ { [%eval -5.35] [%clk 0:02:10] } 45. Kd2 { [%eval -5.12] [%clk 0:01:03] } 45... Re5 { [%eval -5.29] [%clk 0:02:29] } 46. a3 { [%eval -5.26] [%clk 0:01:23] } 46... a4 { [%eval -5.15] [%clk 0:01:13] } 0-1