Event: World Youth Cup 2021 O16-G12 - Open 16
Site: Tornelo INT
Date: 2021-08-16
White: Oosthuizen, Michal Jacobus
Black: Stephenson, John
Result: 0-1
ECO: D74
Opening: Neo-Grünfeld Defense: Delayed Exchange Variation
Variant: Standard

1. c4 { [%eval 0.2] [%clk 0:10:03] } 1... Nf6 { [%eval 0.25] [%clk 0:10:01] } 2. Nf3 { [%eval 0.15] [%clk 0:10:04] } 2... g6 { [%eval 0.37] [%clk 0:10:01] } 3. g3 { [%eval 0.09] [%clk 0:10:03] } 3... Bg7 { [%eval 0.22] [%clk 0:10:02] } 4. Bg2 { [%eval 0.22] [%clk 0:10:03] } 4... O-O { [%eval 0.21] [%clk 0:10:03] } 5. O-O { [%eval 0.16] [%clk 0:10:02] } 5... d5 { [%eval 0.35] [%clk 0:10:04] } 6. cxd5 { [%eval 0.09] [%clk 0:10:01] } 6... Nxd5 { [%eval 0.28] [%clk 0:10:03] } 7. d4 { [%eval 0.3] [%clk 0:09:50] } 7... c6?! { [%eval 0.91] } { Inaccuracy. Nc6 was best. } { [%clk 0:10:03] } 8. e4 { [%eval 1.0] [%clk 0:09:33] } 8... Nf6?! { [%eval 1.92] } { Inaccuracy. Nb6 was best. } { [%clk 0:10:03] } 9. Nc3 { [%eval 2.04] [%clk 0:09:31] } 9... Bg4 { [%eval 2.07] [%clk 0:10:01] } 10. Be3 { [%eval 1.85] [%clk 0:09:15] } 10... Nbd7 { [%eval 2.01] [%clk 0:09:56] } 11. h3 { [%eval 2.2] [%clk 0:09:09] } 11... Bxf3 { [%eval 2.06] [%clk 0:09:56] } 12. Qxf3 { [%eval 1.76] [%clk 0:08:52] } 12... Nb6?! { [%eval 2.55] } { Inaccuracy. e5 was best. } { [%clk 0:09:56] } 13. Qe2 { [%eval 2.26] [%clk 0:08:31] } 13... h6?! { [%eval 3.08] } { Inaccuracy. e6 was best. } { [%clk 0:09:54] } 14. Rfd1 { [%eval 3.1] [%clk 0:08:26] } 14... e6 { [%eval 2.35] [%clk 0:09:54] } 15. a4 { [%eval 2.99] [%clk 0:08:00] } 15... a5 { [%eval 3.11] [%clk 0:09:51] } 16. b3 { [%eval 2.69] [%clk 0:07:58] } 16... Qe7 { [%eval 2.58] [%clk 0:09:50] } 17. d5 { [%eval 2.22] [%clk 0:07:04] } 17... Nbd7 { [%eval 2.48] [%clk 0:08:44] } 18. d6 { [%eval 2.35] [%clk 0:06:25] } 18... Qd8 { [%eval 2.48] [%clk 0:08:45] } 19. f4? { [%eval 0.86] } { Mistake. Rd3 was best. } { [%clk 0:06:20] } 19... e5? { [%eval 2.29] } { Mistake. Nh5 was best. } { [%clk 0:08:46] } 20. f5 { [%eval 2.46] [%clk 0:06:17] } 20... gxf5 { [%eval 2.37] [%clk 0:08:45] } 21. exf5 { [%eval 2.33] [%clk 0:06:18] } 21... Re8 { [%eval 2.88] [%clk 0:08:40] } 22. Qd2? { [%eval 1.61] } { Mistake. Ne4 was best. } { [%clk 0:05:54] } 22... Kh7?! { [%eval 2.73] } { Inaccuracy. e4 was best. } { [%clk 0:08:15] } 23. g4?! { [%eval 1.89] } { Inaccuracy. Re1 was best. } { [%clk 0:05:03] } 23... Nb6? { [%eval 3.65] } { Mistake. e4 was best. } { [%clk 0:08:05] } 24. g5?! { [%eval 2.54] } { Inaccuracy. Qf2 was best. } { [%clk 0:04:49] } 24... hxg5 { [%eval 2.23] [%clk 0:08:05] } 25. Bxg5 { [%eval 1.92] [%clk 0:04:50] } 25... Nbd7 { [%eval 2.13] [%clk 0:08:07] } 26. Qe1 { [%eval 2.58] [%clk 0:04:39] } 26... Qb6+ { [%eval 2.55] [%clk 0:08:05] } 27. Kh2 { [%eval 2.59] [%clk 0:04:27] } 27... e4? { [%eval 4.4] } { Mistake. Qb4 was best. } { [%clk 0:07:54] } 28. Qh4+ { [%eval 3.75] [%clk 0:03:42] } 28... Kg8 { [%eval 3.52] [%clk 0:07:55] } 29. Rg1 { [%eval 3.41] [%clk 0:03:37] } 29... Qb4 { [%eval 3.6] [%clk 0:07:09] } 30. Rac1?? { [%eval 0.35] } { Blunder. Bf1 was best. } { [%clk 0:02:47] } 30... Qxd6+?? { [%eval 4.54] } { Blunder. e3 was best. } { [%clk 0:07:01] } 31. Bf4 { [%eval 3.83] [%clk 0:02:47] } 31... Ne5 { [%eval 4.96] [%clk 0:06:42] } 32. Nxe4?? { [%eval -0.7] } { Blunder. Kh1 was best. } { [%clk 0:02:44] } 32... Neg4+ { [%eval -0.66] [%clk 0:06:36] } 33. hxg4?? { [%eval -5.92] } { Blunder. Kh1 was best. } { [%clk 0:02:27] } 33... Qxf4+ { [%eval -6.53] [%clk 0:06:35] } 34. Ng3 { [%eval -9.25] [%clk 0:02:15] } 34... Nxg4+ { [%eval -9.69] [%clk 0:06:35] } 35. Qxg4 { [%eval -9.29] [%clk 0:02:07] } 35... Qxg4 { [%eval -9.43] [%clk 0:06:35] } 36. Bh3 { [%eval -9.1] [%clk 0:02:08] } 36... Qf4 { [%eval -9.64] [%clk 0:06:27] } 37. Rcf1 { [%eval -9.46] [%clk 0:02:08] } 37... Qd6 { [%eval -8.45] [%clk 0:06:11] } 38. f6 { [%eval -8.59] [%clk 0:01:39] } 38... Bxf6 { [%eval -7.9] [%clk 0:05:31] } 39. Kh1 { [%eval -9.24] [%clk 0:01:40] } 39... Kf8 { [%eval -9.35] [%clk 0:05:23] } 40. Nf5 { [%eval -9.96] [%clk 0:01:36] } 40... Qc7 { [%eval -8.5] [%clk 0:04:38] } 41. Nh6 { [%eval -9.19] [%clk 0:01:12] } 41... Bg7 { [%eval -6.31] [%clk 0:04:38] } 42. Nf5?! { [%eval -9.32] } { Inaccuracy. Rxf7+ was best. } { [%clk 0:01:11] } 42... Re2 { [%eval -9.23] [%clk 0:04:37] } 43. Rg3 { [%eval -9.59] [%clk 0:01:04] } 43... Rae8 { [%eval -9.09] [%clk 0:04:17] } 44. Rfg1 { [%eval -10.82] [%clk 0:00:50] } 44... Re1 { [%eval -7.61] [%clk 0:03:11] } 45. Nxg7? { [%eval #-5] } { Checkmate is now unavoidable. Rxg7 was best. } { [%clk 0:00:42] } 45... Rxg1+?! { [%eval -64.47] } { Lost forced checkmate sequence. Qxg3 was best. } { [%clk 0:03:09] } 46. Rxg1 { [%eval -12.87] [%clk 0:00:43] } 46... Re2 { [%eval -23.31] [%clk 0:03:05] } 47. Bg2?! { [%eval #-7] } { Checkmate is now unavoidable. Rg2 was best. } { [%clk 0:00:43] } 47... Qg3 { [%eval #-6] [%clk 0:02:48] } 48. Nf5 { [%eval #-6] [%clk 0:00:35] } 48... Qg5?! { [%eval -10.03] } { Lost forced checkmate sequence. Qg4 was best. } { [%clk 0:02:34] } 49. Bh3 { [%eval -10.35] [%clk 0:00:28] } 49... Qf4 { [%eval -8.9] [%clk 0:02:17] } 50. Rg3 { [%eval -17.23] [%clk 0:00:11] } 50... Qf2 { [%eval -9.3] [%clk 0:02:06] } 51. Rg2 { [%eval -9.63] [%clk 0:00:13] } 51... Qf1+ { [%eval -9.82] [%clk 0:02:00] } 52. Kh2 { [%eval -9.82] [%clk 0:00:15] } 52... Rxg2+ { [%eval -8.76] [%clk 0:02:00] } 53. Bxg2 { [%eval -10.14] [%clk 0:00:17] } 53... Qxf5 { [%eval -9.46] [%clk 0:02:01] } 54. b4 { [%eval -60.46] [%clk 0:00:18] } 54... axb4 { [%eval -74.17] [%clk 0:02:02] } 55. a5?! { [%eval #-8] } { Checkmate is now unavoidable. Bh3 was best. } { [%clk 0:00:20] } 55... b3 { [%eval #-7] [%clk 0:02:04] } 56. a6 { [%eval #-8] [%clk 0:00:21] } 56... bxa6 { [%eval #-6] [%clk 0:02:04] } 57. Bxc6 { [%eval #-5] [%clk 0:00:20] } 57... Qc2+ { [%eval #-6] [%clk 0:02:05] } 58. Bg2 { [%eval #-6] [%clk 0:00:22] } 58... b2 { [%eval #-5] [%clk 0:02:06] } 59. Kg3 { [%eval #-4] [%clk 0:00:22] } 59... b1=Q { [%eval #-3] [%clk 0:02:06] } 60. Kh2 { [%eval #-3] [%clk 0:00:23] } 60... Qh7+ { [%eval #-3] [%clk 0:02:01] } 61. Kg3 { [%eval #-3] [%clk 0:00:22] } 61... Qb3+ { [%eval #-3] [%clk 0:02:02] } 62. Bf3 { [%eval #-3] [%clk 0:00:23] } 62... Qg6+ { [%eval #-3] [%clk 0:02:03] } 63. Kf2 { [%eval #-3] [%clk 0:00:23] } 63... Qxf3+ { [%eval #-9] [%clk 0:02:04] } 64. Kxf3 { [%eval #-9] [%clk 0:00:23] } 64... Qf5+ { [%eval #-8] [%clk 0:02:05] } 65. Ke3 { [%eval #-9] [%clk 0:00:25] } 65... a5 { [%eval #-7] [%clk 0:02:07] } 66. Kd4 { [%eval #-8] [%clk 0:00:26] } 66... a4 { [%eval #-6] [%clk 0:02:08] } 67. Kc3 { [%eval #-6] [%clk 0:00:27] } 67... Qb5 { [%eval #-6] [%clk 0:02:07] } 68. Kc2 { [%eval #-6] [%clk 0:00:28] } 68... a3 { [%eval #-5] [%clk 0:02:08] } 0-1