Event: Biel Chess Festival 2025 Blitz
Site: Biel, Switzerland
Date: 2025-07-20
White: Clausen, Martin
WhiteElo: 1993
Black: Karthik, Venkataraman
Result: 1-0
ECO: B20
Opening: Sicilian Defense: Mengarini Variation
Variant: Standard
TimeControl: 3 min + 2 sec per move

1. e4 { [%eval 0.18] } 1... c5 { [%eval 0.25] [%clk 0:03:03] } 2. a3 { [%eval -0.09] [%clk 0:03:02] } 2... d6 { [%eval 0.0] [%clk 0:03:00] } 3. Bc4 { [%eval -0.1] [%clk 0:02:59] } 3... Nf6 { [%eval -0.07] [%clk 0:03:00] } 4. d3 { [%eval -0.17] [%clk 0:03:00] } 4... e6 { [%eval -0.14] [%clk 0:03:01] } 5. Ba2 { [%eval -0.19] [%clk 0:03:01] } 5... Be7 { [%eval -0.16] [%clk 0:03:01] } 6. Nc3 { [%eval -0.18] [%clk 0:02:54] } 6... Nc6 { [%eval -0.09] [%clk 0:03:01] } 7. f4 { [%eval -0.21] [%clk 0:02:52] } 7... Rb8 { [%eval -0.1] [%clk 0:03:01] } 8. Nf3 { [%eval -0.17] [%clk 0:02:47] } 8... b5 { [%eval -0.18] [%clk 0:03:02] } 9. O-O { [%eval -0.07] [%clk 0:02:46] } 9... b4 { [%eval 0.39] [%clk 0:03:00] } 10. axb4 { [%eval 0.4] [%clk 0:02:40] } 10... cxb4 { [%eval 0.63] [%clk 0:03:01] } 11. Ne2 { [%eval 0.62] [%clk 0:02:36] } 11... Qb6+ { [%eval 0.77] [%clk 0:03:00] } 12. Kh1 { [%eval 0.65] [%clk 0:02:33] } 12... Ng4 { [%eval 0.76] [%clk 0:03:01] } 13. d4 { [%eval 0.72] [%clk 0:02:05] } 13... O-O { [%eval 0.58] [%clk 0:02:59] } 14. h3 { [%eval 0.69] [%clk 0:02:04] } 14... Nf6 { [%eval 0.72] [%clk 0:03:00] } 15. e5 { [%eval 0.27] [%clk 0:01:52] } 15... dxe5?! { [%eval 1.36] } { Inaccuracy. Ne4 was best. } { [%clk 0:02:59] } 16. fxe5 { [%eval 1.36] [%clk 0:01:39] } 16... Nd5 { [%eval 1.25] [%clk 0:02:59] } 17. Bxd5?! { [%eval 0.55] } { Inaccuracy. Nf4 was best. } { [%clk 0:01:15] } 17... exd5 { [%eval 0.51] [%clk 0:03:00] } 18. Ng5?! { [%eval -0.45] } { Inaccuracy. c4 was best. } { [%clk 0:01:11] } 18... h6?! { [%eval 0.16] } { Inaccuracy. a5 was best. } { [%clk 0:02:59] } 19. Nf3 { [%eval 0.11] [%clk 0:01:09] } 19... Bf5 { [%eval 0.38] [%clk 0:02:51] } 20. Be3?! { [%eval -0.43] } { Inaccuracy. Nh2 was best. } { [%clk 0:01:08] } 20... Rbc8?! { [%eval 0.25] } { Inaccuracy. b3 was best. } { [%clk 0:02:48] } 21. c3 { [%eval -0.02] [%clk 0:01:07] } 21... bxc3 { [%eval 0.02] [%clk 0:02:45] } 22. bxc3 { [%eval -0.02] [%clk 0:01:07] } 22... Na5 { [%eval 0.07] [%clk 0:02:46] } 23. Qe1? { [%eval -1.05] } { Mistake. Nf4 was best. } { [%clk 0:00:48] } 23... Nc4 { [%eval -0.94] [%clk 0:02:46] } 24. Bf2 { [%eval -1.24] [%clk 0:00:43] } 24... a5?! { [%eval -0.51] } { Inaccuracy. Bd3 was best. } { [%clk 0:02:44] } 25. Bh4 { [%eval -0.55] [%clk 0:00:37] } 25... Bxh4 { [%eval -0.1] [%clk 0:02:44] } 26. Nxh4 { [%eval 0.0] [%clk 0:00:26] } 26... Be6?! { [%eval 0.7] } { Inaccuracy. Bd3 was best. } { [%clk 0:02:34] } 27. Nf5?! { [%eval 0.0] } { Inaccuracy. Nf4 was best. } { [%clk 0:00:26] } 27... Bxf5 { [%eval 0.0] [%clk 0:02:33] } 28. Rxf5 { [%eval 0.0] [%clk 0:00:27] } 28... Ne3 { [%eval 0.06] [%clk 0:02:34] } 29. Qf2?? { [%eval -3.18] } { Blunder. Rb1 was best. } { [%clk 0:00:09] } 29... Nxf5 { [%eval -3.43] [%clk 0:02:32] } 30. Qxf5 { [%eval -3.33] [%clk 0:00:10] } 30... Rfd8?! { [%eval -2.56] } { Inaccuracy. Qb2 was best. } { [%clk 0:01:56] } 31. Nf4 { [%eval -2.56] [%clk 0:00:10] } 31... g6?? { [%eval -0.52] } { Blunder. Ra8 was best. } { [%clk 0:01:55] } 32. Qg4 { [%eval -0.62] [%clk 0:00:09] } 32... Rc6?! { [%eval 0.0] } { Inaccuracy. Rxc3 was best. } { [%clk 0:01:13] } 33. Re1 { [%eval -0.13] [%clk 0:00:09] } 33... Re6 { [%eval 0.0] [%clk 0:01:09] } 34. Nxe6 { [%eval 0.0] [%clk 0:00:10] } 34... Qxe6 { [%eval 0.0] [%clk 0:01:10] } 35. Qh4 { [%eval 0.0] [%clk 0:00:10] } 35... g5 { [%eval 0.2] [%clk 0:01:10] } 36. Qf2 { [%eval 0.0] [%clk 0:00:10] } 36... a4 { [%eval 0.0] [%clk 0:01:10] } 37. Rf1 { [%eval 0.0] [%clk 0:00:10] } 37... a3 { [%eval 0.0] [%clk 0:01:10] } 38. Qa2 { [%eval 0.0] [%clk 0:00:11] } 38... Qa6 { [%eval 0.03] [%clk 0:01:00] } 39. Rf6 { [%eval 0.18] [%clk 0:00:11] } 39... Qa5 { [%eval 0.3] [%clk 0:01:00] } 40. Rxh6 { [%eval 0.65] [%clk 0:00:08] } 40... Qxc3? { [%eval 2.05] } { Mistake. Kg7 was best. } { [%clk 0:01:01] } 41. Qf2?? { [%eval 0.0] } { Blunder. Qb1 was best. } { [%clk 0:00:09] } 41... Ra8 { [%eval 0.0] [%clk 0:00:56] } 42. Qf6?? { [%eval -6.97] } { Blunder. e6 was best. } { [%clk 0:00:09] } 42... Qc1+ { [%eval -6.65] [%clk 0:00:57] } 43. Kh2 { [%eval -6.77] [%clk 0:00:10] } 43... Qf4+ { [%eval -6.59] [%clk 0:00:58] } 44. Qxf4 { [%eval -6.84] [%clk 0:00:10] } 44... gxf4 { [%eval -6.46] [%clk 0:00:59] } 45. Ra6?? { [%eval #-8] } { Checkmate is now unavoidable. e6 was best. } { [%clk 0:00:11] } 45... Rxa6 { [%eval #-7] [%clk 0:01:00] } 1-0