Event: Norwegian Championship 2023
Site: Oslo, Norway
Date: 2023-07-06
White: Ostenstad, Berge
WhiteTitle: GM
WhiteElo: 2442
Black: Ingebretsen, Jens E
BlackTitle: FM
BlackElo: 2342
Result: 0-1
ECO: A37
Opening: English Opening: Symmetrical Variation, Botvinnik System Reversed, with Nf3
Variant: Standard
TimeControl: 40/5400+30:1800+30

1. c4 { [%eval 0.23] [%clk 1:30:56] } 1... c5 { [%eval 0.32] [%clk 1:29:10] } 2. Nf3 { [%eval 0.25] [%clk 1:30:14] } 2... Nc6 { [%eval 0.43] [%clk 1:29:28] } 3. Nc3 { [%eval 0.25] [%clk 1:30:30] } 3... e5 { [%eval 0.46] [%clk 1:29:43] } 4. g3 { [%eval 0.49] [%clk 1:28:18] } 4... g6 { [%eval 0.0] [%clk 1:28:52] } 5. Bg2 { [%eval 0.15] [%clk 1:28:44] } 5... Bg7 { [%eval 0.26] [%clk 1:29:17] } 6. a3 { [%eval 0.16] [%clk 1:27:10] } 6... Nge7 { [%eval 0.4] [%clk 1:28:18] } 7. Rb1 { [%eval 0.26] [%clk 1:26:52] } 7... O-O { [%eval 0.48] [%clk 1:23:25] } 8. O-O { [%eval 0.13] [%clk 1:21:40] } 8... d5 { [%eval 0.19] [%clk 1:23:37] } 9. cxd5 { [%eval 0.12] [%clk 1:21:50] } 9... Nxd5 { [%eval 0.21] [%clk 1:24:00] } 10. Nxd5 { [%eval 0.14] [%clk 1:16:28] } 10... Qxd5 { [%eval 0.12] [%clk 1:24:03] } 11. d3 { [%eval 0.23] [%clk 1:16:52] } 11... e4 { [%eval 0.16] [%clk 1:24:29] } 12. Nd2 { [%eval 0.0] [%clk 1:13:34] } 12... Qa2 { [%eval 0.02] [%clk 1:24:30] } 13. Bxe4 { [%eval 0.0] [%clk 1:11:53] } 13... Re8 { [%eval 0.0] [%clk 1:24:33] } 14. Qb3 { [%eval 0.0] [%clk 1:04:37] } 14... Qxb3 { [%eval 0.05] [%clk 1:24:57] } 15. Nxb3 { [%eval -0.01] [%clk 1:04:59] } 15... c4 { [%eval 0.01] [%clk 1:25:24] } 16. Nd2 { [%eval 0.01] [%clk 1:01:57] } 16... cxd3 { [%eval 0.07] [%clk 1:08:11] } 17. exd3 { [%eval -0.08] [%clk 0:42:13] } 17... Bh3 { [%eval -0.06] [%clk 1:05:44] } 18. Bg2 { [%eval -0.04] [%clk 0:41:17] } 18... Bxg2 { [%eval -0.09] [%clk 1:05:49] } 19. Kxg2 { [%eval -0.08] [%clk 0:41:44] } 19... Rad8 { [%eval -0.05] [%clk 1:05:03] } 20. b4 { [%eval -0.12] [%clk 0:24:38] } 20... Rxd3 { [%eval -0.08] [%clk 0:59:47] } 21. Rb3 { [%eval -0.09] [%clk 0:24:54] } 21... Ne5 { [%eval -0.04] [%clk 0:56:13] } 22. Rxd3 { [%eval -0.14] [%clk 0:22:01] } 22... Nxd3 { [%eval -0.06] [%clk 0:56:38] } 23. Nb3 { [%eval -0.22] [%clk 0:22:17] } 23... Ne1+ { [%eval -0.27] [%clk 0:45:41] } 24. Kh1 { [%eval -0.24] [%clk 0:21:41] } 24... b6 { [%eval -0.28] [%clk 0:43:44] } 25. Bd2 { [%eval -0.26] [%clk 0:19:29] } 25... Nc2 { [%eval -0.25] [%clk 0:41:06] } 26. a4 { [%eval -0.24] [%clk 0:18:45] } 26... Rd8 { [%eval -0.11] [%clk 0:37:15] } 27. Rc1? { [%eval -1.62] } { Mistake. Kg2 was best. } { [%clk 0:18:10] } 27... Na1 { [%eval -1.49] [%clk 0:36:43] } 28. Nxa1 { [%eval -1.61] [%clk 0:15:51] } 28... Rxd2 { [%eval -1.59] [%clk 0:36:43] } 29. Rc8+ { [%eval -1.62] [%clk 0:16:09] } 29... Bf8 { [%eval -1.52] [%clk 0:37:11] } 30. Nc2?! { [%eval -2.31] } { Inaccuracy. Kg2 was best. } { [%clk 0:11:44] } 30... Rxf2 { [%eval -2.26] [%clk 0:36:34] } 31. b5 { [%eval -2.29] [%clk 0:11:13] } 31... Rf1+ { [%eval -2.35] [%clk 0:34:16] } 32. Kg2 { [%eval -2.3] [%clk 0:11:36] } 32... Rc1 { [%eval -2.51] [%clk 0:34:41] } 33. Kf3 { [%eval -2.56] [%clk 0:11:34] } 33... Kg7 { [%eval -2.7] [%clk 0:34:43] } 34. Rc4 { [%eval -2.7] [%clk 0:11:12] } 34... Bc5 { [%eval -2.66] [%clk 0:35:05] } 35. Ke4 { [%eval -3.09] [%clk 0:11:04] } 35... Rh1 { [%eval -2.9] [%clk 0:34:08] } 36. Nd4 { [%eval -3.2] [%clk 0:06:25] } 36... f5+?! { [%eval -2.49] } { Inaccuracy. Rxh2 was best. } { [%clk 0:25:09] } 37. Kf3 { [%eval -2.75] [%clk 0:06:12] } 37... Bxd4? { [%eval -1.09] } { Mistake. Kf6 was best. } { [%clk 0:20:08] } 38. Rxd4 { [%eval -1.74] [%clk 0:06:38] } 38... Rxh2 { [%eval -1.82] [%clk 0:20:34] } 39. Rd7+ { [%eval -1.22] [%clk 0:07:02] } 39... Kf6?! { [%eval -0.13] } { Inaccuracy. Kh6 was best. } { [%clk 0:21:01] } 40. Rxa7 { [%eval -0.35] [%clk 0:07:26] } 40... g5 { [%eval -0.56] [%clk 0:21:18] } 41. Rb7 { [%eval -0.59] [%clk 0:04:36] } 41... g4+ { [%eval -0.28] [%clk 0:20:11] } 42. Ke3 { [%eval -0.49] [%clk 0:04:57] } 42... Rg2 { [%eval -0.53] [%clk 0:19:50] } 43. Rxb6+ { [%eval -0.69] [%clk 0:04:56] } 43... Ke5 { [%eval -0.71] [%clk 0:18:28] } 44. Rb8 { [%eval -0.64] [%clk 0:03:47] } 44... Rxg3+ { [%eval 0.0] [%clk 0:18:40] } 45. Kf2?? { [%eval -4.11] } { Blunder. Kd2 was best. } { [%clk 0:04:14] } 45... Rb3 { [%eval -4.59] [%clk 0:13:30] } 46. b6?! { [%eval -5.91] } { Inaccuracy. Rc8 was best. } { [%clk 0:01:42] } 46... Kf4?! { [%eval -3.77] } { Inaccuracy. g3+ was best. } { [%clk 0:11:59] } 47. a5 { [%eval -3.88] [%clk 0:30:01] } 47... g3+ { [%eval -3.7] [%clk 0:40:23] } 48. Ke2 { [%eval -3.16] [%clk 0:29:54] } 48... Rb2+ { [%eval -3.62] [%clk 0:35:30] } 49. Kd3 { [%eval -3.11] [%clk 0:28:18] } 49... Kf3?? { [%eval 0.0] } { Blunder. h5 was best. } { [%clk 0:12:48] } 50. a6?? { [%eval -6.51] } { Blunder. Kc3 was best. } { [%clk 0:26:14] } 50... g2 { [%eval -6.49] [%clk 0:13:13] } 51. a7?! { [%eval -35.81] } { Inaccuracy. Kc3 was best. } { [%clk 0:26:05] } 51... g1=Q { [%eval -36.61] [%clk 0:13:35] } 52. a8=Q+ { [%eval -36.3] [%clk 0:26:28] } 52... Kf2 { [%eval -36.27] [%clk 0:14:01] } 53. Kd4?! { [%eval #-8] } { Checkmate is now unavoidable. Qa4 was best. } { [%clk 0:20:59] } 53... Qg7+ { [%eval #-7] [%clk 0:12:40] } 0-1