Event: Biel Chess Festival 2025 Challengers Rapid
Site: Biel, Switzerland
Date: 2025-07-13
White: Theodorou, Nikolas
WhiteTitle: GM
WhiteElo: 2559
Black: Dardha, Daniel
BlackTitle: GM
BlackElo: 2580
Result: 1-0
ECO: E12
Opening: Queen's Indian Defense: Petrosian Variation
Variant: Standard
TimeControl: 15 min + 5 sec per move

1. d4 { [%eval 0.17] [%clk 0:15:08] } 1... Nf6 { [%eval 0.19] [%clk 0:15:05] } 2. Nf3 { [%eval 0.11] [%clk 0:15:11] } 2... b6 { [%eval 0.32] [%clk 0:15:04] } 3. c4 { [%eval 0.22] [%clk 0:14:59] } 3... e6 { [%eval 0.23] [%clk 0:15:06] } 4. a3 { [%eval 0.18] [%clk 0:15:01] } 4... Ba6 { [%eval 0.41] [%clk 0:14:55] } 5. Qb3 { [%eval 0.19] [%clk 0:15:01] } 5... c6 { [%eval 0.26] [%clk 0:11:52] } 6. Nc3 { [%eval 0.25] [%clk 0:14:00] } 6... d5 { [%eval 0.38] [%clk 0:11:36] } 7. cxd5 { [%eval 0.42] [%clk 0:13:51] } 7... exd5 { [%eval 0.59] [%clk 0:11:21] } 8. Bg5 { [%eval 0.59] [%clk 0:13:10] } 8... Be7 { [%eval 0.51] [%clk 0:11:06] } 9. Bxf6 { [%eval 0.55] [%clk 0:12:43] } 9... Bxf6 { [%eval 0.4] [%clk 0:11:09] } 10. e4 { [%eval 0.44] [%clk 0:12:46] } 10... Bxf1 { [%eval 0.46] [%clk 0:09:52] } 11. Rxf1 { [%eval 0.51] [%clk 0:12:24] } 11... dxe4 { [%eval 0.5] [%clk 0:09:01] } 12. Nxe4 { [%eval 0.49] [%clk 0:12:24] } 12... O-O { [%eval 0.43] [%clk 0:09:01] } 13. O-O-O { [%eval 0.47] [%clk 0:12:23] } 13... Nd7 { [%eval 0.48] [%clk 0:09:02] } 14. Ne5 { [%eval 0.1] [%clk 0:08:40] } 14... Bxe5 { [%eval 0.15] [%clk 0:05:04] } 15. dxe5 { [%eval 0.15] [%clk 0:08:43] } 15... Qe7 { [%eval 0.59] [%clk 0:04:54] } 16. f4 { [%eval 0.77] [%clk 0:06:34] } 16... Nc5 { [%eval 0.69] [%clk 0:04:55] } 17. Qc2 { [%eval 0.43] [%clk 0:06:17] } 17... Nxe4 { [%eval 0.42] [%clk 0:04:51] } 18. Qxe4 { [%eval 0.31] [%clk 0:06:19] } 18... Rad8 { [%eval 0.76] [%clk 0:04:19] } 19. Rxd8 { [%eval 0.8] [%clk 0:06:09] } 19... Rxd8 { [%eval 0.66] [%clk 0:04:23] } 20. Qxc6 { [%eval 0.61] [%clk 0:05:33] } 20... h6 { [%eval 0.74] [%clk 0:04:17] } 21. Rd1 { [%eval 0.79] [%clk 0:05:03] } 21... Rxd1+ { [%eval 0.74] [%clk 0:04:18] } 22. Kxd1 { [%eval 0.84] [%clk 0:05:06] } 22... Qd8+ { [%eval 1.06] [%clk 0:04:06] } 23. Kc2 { [%eval 1.01] [%clk 0:04:17] } 23... Kh7? { [%eval 2.7] } { Mistake. g6 was best. } { [%clk 0:03:16] } 24. Qe4+?? { [%eval 0.54] } { Blunder. f5 was best. } { [%clk 0:03:41] } 24... Kg8?? { [%eval 2.92] } { Blunder. g6 was best. } { [%clk 0:03:15] } 25. f5 { [%eval 2.57] [%clk 0:03:37] } 25... Qc7+?! { [%eval 3.92] } { Inaccuracy. Kf8 was best. } { [%clk 0:03:10] } 26. Kb3 { [%eval 3.81] [%clk 0:02:40] } 26... Kf8 { [%eval 3.74] [%clk 0:03:02] } 27. Qd5 { [%eval 3.87] [%clk 0:02:10] } 27... Ke7 { [%eval 4.08] [%clk 0:02:53] } 28. g4 { [%eval 3.96] [%clk 0:02:05] } 28... a6 { [%eval 3.96] [%clk 0:02:25] } 29. h4 { [%eval 3.7] [%clk 0:01:53] } 29... Qc1? { [%eval 5.91] } { Mistake. Ke8 was best. } { [%clk 0:01:49] } 30. Qd6+ { [%eval 6.26] [%clk 0:01:04] } 30... Ke8 { [%eval 5.48] [%clk 0:01:53] } 31. Qb8+ { [%eval 5.62] [%clk 0:01:04] } 31... Kd7 { [%eval 5.58] [%clk 0:01:44] } 32. Qd6+ { [%eval 5.78] [%clk 0:01:06] } 32... Ke8 { [%eval 5.57] [%clk 0:01:48] } 33. e6 { [%eval 5.5] [%clk 0:00:38] } 33... fxe6 { [%eval 5.95] [%clk 0:01:44] } 34. fxe6 { [%eval 5.71] [%clk 0:00:33] } 34... Qc8 { [%eval 6.61] [%clk 0:01:47] } 35. Qxb6 { [%eval 6.33] [%clk 0:00:21] } 35... Ke7 { [%eval 6.34] [%clk 0:01:51] } 36. a4?! { [%eval 4.09] } { Inaccuracy. Qb4+ was best. } { [%clk 0:00:06] } 36... Qa8 { [%eval 4.65] [%clk 0:01:47] } 37. Qc7+?! { [%eval 3.31] } { Inaccuracy. Kb4 was best. } { [%clk 0:00:09] } 37... Kxe6 { [%eval 3.4] [%clk 0:01:50] } 38. Qxg7 { [%eval 3.44] [%clk 0:00:11] } 38... Qd5+ { [%eval 3.27] [%clk 0:01:50] } 39. Ka3 { [%eval 3.15] [%clk 0:00:15] } 39... Qc5+ { [%eval 3.46] [%clk 0:01:46] } 40. Ka2 { [%eval 3.28] [%clk 0:00:19] } 40... Qc4+ { [%eval 3.25] [%clk 0:01:10] } 41. b3 { [%eval 3.09] [%clk 0:00:22] } 41... Qe2+ { [%eval 3.2] [%clk 0:01:13] } 42. Ka3 { [%eval 3.57] [%clk 0:00:23] } 42... Qe3 { [%eval 3.59] [%clk 0:01:16] } 43. Qg6+ { [%eval 3.56] [%clk 0:00:24] } 43... Ke7 { [%eval 3.55] [%clk 0:01:20] } 44. Qg7+ { [%eval 3.37] [%clk 0:00:19] } 44... Ke6 { [%eval 3.1] [%clk 0:01:24] } 45. g5 { [%eval 3.06] [%clk 0:00:12] } 45... Qc5+ { [%eval 2.93] [%clk 0:00:51] } 46. Ka2 { [%eval 2.98] [%clk 0:00:16] } 46... Qf2+? { [%eval 5.07] } { Mistake. hxg5 was best. } { [%clk 0:00:52] } 47. Qb2 { [%eval 5.41] [%clk 0:00:17] } 47... Qxh4 { [%eval 5.34] [%clk 0:00:55] } 48. Qf6+ { [%eval 5.18] [%clk 0:00:11] } 48... Kd5 { [%eval 5.23] [%clk 0:00:53] } 49. Qf5+ { [%eval 4.98] [%clk 0:00:13] } 49... Kd6 { [%eval 5.71] [%clk 0:00:39] } 50. Qg6+ { [%eval 4.76] [%clk 0:00:15] } 50... Ke5 { [%eval 4.91] [%clk 0:00:26] } 51. Qg7+ { [%eval 4.74] [%clk 0:00:14] } 51... Kd5 { [%eval 5.98] [%clk 0:00:23] } 52. gxh6 { [%eval 5.81] [%clk 0:00:17] } 52... Qh2+ { [%eval 5.86] [%clk 0:00:26] } 53. Ka3 { [%eval 6.02] [%clk 0:00:15] } 53... Qd6+ { [%eval 6.93] [%clk 0:00:27] } 54. b4 { [%eval 7.13] [%clk 0:00:19] } 54... Kc4? { [%eval #15] } { Checkmate is now unavoidable. Ke4 was best. } { [%clk 0:00:27] } 55. Qg4+ { [%eval #27] [%clk 0:00:15] } 55... Kc3 { [%eval 65.4] [%clk 0:00:30] } 56. Qf3+ { [%eval 9.41] [%clk 0:00:17] } 56... Kc2? { [%eval #14] } { Checkmate is now unavoidable. Kd2 was best. } { [%clk 0:00:30] } 57. Qb3+ { [%clk 0:00:15] } 57... Kd2 { [%clk 0:00:29] } 58. h7 { [%clk 0:00:13] } 58... Qh6 { [%clk 0:00:26] } 59. Qb2+ { [%clk 0:00:14] } 1-0