Event: 2025 O2C Doeberl Cup Premier
Site: Canberra, Australia
Date: 2025-04-17
White: Shen, Zhiyuan
WhiteTitle: WFM
WhiteElo: 2057
Black: Ikeda, Junta
BlackTitle: IM
BlackElo: 2371
Result: 1/2-1/2
ECO: B42
Opening: Sicilian Defense: Kan Variation, Polugaevsky Variation
Variant: Standard
TimeControl: 90 minutes + 30 seconds per move from move 1

1. e4 { [%eval 0.18] [%clk 1:30:57] } 1... c5 { [%eval 0.25] [%clk 1:30:52] } 2. Nf3 { [%eval 0.2] [%clk 1:31:18] } 2... e6 { [%eval 0.28] [%clk 1:31:12] } 3. d4 { [%eval 0.4] [%clk 1:31:38] } 3... cxd4 { [%eval 0.29] [%clk 1:31:32] } 4. Nxd4 { [%eval 0.23] [%clk 1:32:03] } 4... a6 { [%eval 0.42] [%clk 1:31:57] } 5. Bd3 { [%eval 0.45] [%clk 1:32:23] } 5... Bc5 { [%eval 0.42] [%clk 1:32:12] } 6. Nb3 { [%eval 0.34] [%clk 1:32:46] } 6... Be7 { [%eval 0.58] [%clk 1:32:27] } 7. Qg4 { [%eval 0.49] [%clk 1:32:00] } 7... g6 { [%eval 0.58] [%clk 1:32:48] } 8. Nc3 { [%eval 0.54] [%clk 1:32:05] } 8... d6 { [%eval 0.71] [%clk 1:28:36] } 9. Qe2 { [%eval 0.69] [%clk 1:31:35] } 9... Nc6 { [%eval 0.94] [%clk 1:27:35] } 10. Bd2 { [%eval 0.58] [%clk 1:30:09] } 10... Nf6 { [%eval 0.56] [%clk 1:25:06] } 11. Bh6 { [%eval 0.7] [%clk 1:26:45] } 11... b5 { [%eval 0.62] [%clk 1:17:19] } 12. a3 { [%eval 0.55] [%clk 1:21:45] } 12... Ne5 { [%eval 0.69] [%clk 1:06:49] } 13. O-O-O { [%eval 0.55] [%clk 1:13:00] } 13... Nfg4 { [%eval 1.01] [%clk 0:59:57] } 14. Bf4?! { [%eval -0.05] } { Inaccuracy. Bg7 was best. } { [%clk 1:05:54] } 14... Qc7 { [%eval 0.24] [%clk 0:54:44] } 15. Kb1 { [%eval 0.22] [%clk 0:55:58] } 15... Nxd3 { [%eval 0.18] [%clk 0:50:20] } 16. cxd3 { [%eval 0.14] [%clk 0:54:37] } 16... Ne5 { [%eval 0.49] [%clk 0:46:03] } 17. Bh6 { [%eval 0.6] [%clk 0:49:04] } 17... Qb8 { [%eval 0.7] [%clk 0:43:27] } 18. f4 { [%eval 0.59] [%clk 0:47:46] } 18... Nd7 { [%eval 0.48] [%clk 0:37:30] } 19. Nd4 { [%eval 0.68] [%clk 0:36:54] } 19... Qb6 { [%eval 0.56] [%clk 0:35:38] } 20. Nc2 { [%eval 0.39] [%clk 0:32:40] } 20... a5 { [%eval 0.53] [%clk 0:18:24] } 21. Rhe1 { [%eval 0.59] [%clk 0:26:19] } 21... Bf6? { [%eval 2.01] } { Mistake. Bb7 was best. } { [%clk 0:12:30] } 22. e5 { [%eval 1.93] [%clk 0:25:13] } 22... Be7?! { [%eval 2.93] } { Inaccuracy. dxe5 was best. } { [%clk 0:07:01] } 23. exd6?! { [%eval 2.21] } { Inaccuracy. Nd5 was best. } { [%clk 0:21:22] } 23... Bxd6 { [%eval 2.39] [%clk 0:06:38] } 24. d4 { [%eval 2.42] [%clk 0:19:29] } 24... Ba6 { [%eval 2.86] [%clk 0:05:08] } 25. Qe4?! { [%eval 2.01] } { Inaccuracy. Qf3 was best. } { [%clk 0:15:11] } 25... O-O-O { [%eval 1.85] [%clk 0:03:22] } 26. Qf3? { [%eval 0.61] } { Mistake. d5 was best. } { [%clk 0:11:46] } 26... Kb8?! { [%eval 1.2] } { Inaccuracy. b4 was best. } { [%clk 0:01:30] } 27. d5 { [%eval 1.32] [%clk 0:11:08] } 27... Bb7 { [%eval 1.31] [%clk 0:00:58] } 28. Qe2 { [%eval 1.12] [%clk 0:10:33] } 28... exd5 { [%eval 1.19] [%clk 0:00:38] } 29. Qxb5 { [%eval 0.72] [%clk 0:07:14] } 29... Qxb5 { [%eval 0.86] [%clk 0:00:41] } 30. Nxb5 { [%eval 1.09] [%clk 0:07:42] } 30... Bc5 { [%eval 0.84] [%clk 0:00:40] } 31. b4 { [%eval 0.56] [%clk 0:07:30] } 31... axb4 { [%eval 0.66] [%clk 0:00:47] } 32. axb4 { [%eval 0.67] [%clk 0:07:58] } 32... Bf8 { [%eval 0.87] [%clk 0:00:38] } 33. Bg5 { [%eval 0.91] [%clk 0:06:26] } 33... f6?! { [%eval 1.84] } { Inaccuracy. Rc8 was best. } { [%clk 0:00:54] } 34. Bh4 { [%eval 1.78] [%clk 0:06:49] } 34... Bc6 { [%eval 1.78] [%clk 0:00:36] } 35. Nbd4? { [%eval 0.57] } { Mistake. Nc3 was best. } { [%clk 0:05:53] } 35... Bb7? { [%eval 2.32] } { Mistake. Ba4 was best. } { [%clk 0:00:40] } 36. Nb5 { [%eval 1.88] [%clk 0:05:10] } 36... Bc6 { [%eval 1.82] [%clk 0:00:42] } 37. Nbd4?! { [%eval 0.69] } { Inaccuracy. Nc3 was best. } { [%clk 0:05:36] } 37... Ba8?? { [%eval 2.78] } { Blunder. Ba4 was best. } { [%clk 0:00:36] } 38. Re6 { [%eval 2.71] [%clk 0:05:38] } 38... Rg8 { [%eval 2.51] [%clk 0:00:34] } 39. Kb2 { [%eval 2.43] [%clk 0:03:51] } 39... Bg7 { [%eval 2.96] [%clk 0:00:38] } 40. Rde1 { [%eval 2.99] [%clk 0:03:21] } 40... Bb7 { [%eval 3.18] [%clk 0:00:36] } 41. Kb3 { [%eval 3.32] [%clk 0:03:12] } 41... Rc8 { [%eval 3.63] [%clk 0:00:33] } 42. Re7 { [%eval 3.57] [%clk 0:02:42] } 42... Nb6 { [%eval 3.48] [%clk 0:00:33] } 43. f5 { [%eval 3.51] [%clk 0:02:55] } 43... Nc4 { [%eval 3.22] [%clk 0:00:36] } 44. Ne6 { [%eval 2.97] [%clk 0:01:35] } 44... Nd2+ { [%eval 3.0] [%clk 0:00:41] } 45. Kb2 { [%eval 2.89] [%clk 0:01:50] } 45... Nc4+ { [%eval 2.8] [%clk 0:01:07] } 46. Kb3 { [%eval 2.52] [%clk 0:02:11] } 46... Nd2+ { [%eval 2.8] [%clk 0:01:03] } 47. Kb2 { [%eval 2.43] [%clk 0:02:33] } 47... Nc4+ { [%eval 2.48] [%clk 0:01:22] } 48. Kb3?? { [%eval 0.0] } { Blunder. Ka2 was best. } { [%clk 0:02:58] } 48... Nd2+ { [%eval 0.53] [%clk 0:00:42] } 1/2-1/2