Event: Round 8: Pereyra, Juan - Barbosa, Oliver
Date: 2025-07-20
White: Pereyra, Juan
WhiteTitle: FM
WhiteElo: 2304
Black: Barbosa, Oliver
BlackTitle: GM
BlackElo: 2433
Result: 1/2-1/2
ECO: D17
Opening: Slav Defense: Czech Variation, Krause Attack
Variant: Standard
TimeControl: 90+30

1. d4 { [%eval 0.17] [%clk 1:30:30] } 1... d5 { [%eval 0.2] [%clk 1:26:54] } 2. c4 { [%eval 0.18] [%clk 1:30:48] } 2... c6 { [%eval 0.21] [%clk 1:26:36] } 3. Nf3 { [%eval 0.2] [%clk 1:28:59] } 3... Nf6 { [%eval 0.24] [%clk 1:26:57] } 4. Nc3 { [%eval 0.16] [%clk 1:29:08] } 4... dxc4 { [%eval 0.29] [%clk 1:27:12] } 5. a4 { [%eval 0.28] [%clk 1:29:12] } 5... Bf5 { [%eval 0.28] [%clk 1:27:17] } 6. Ne5 { [%eval 0.25] [%clk 1:29:12] } 6... Nbd7 { [%eval 0.3] [%clk 1:27:18] } 7. Nxc4 { [%eval 0.22] [%clk 1:29:11] } 7... Nb6 { [%eval 0.26] [%clk 1:27:42] } 8. Ne5 { [%eval 0.37] [%clk 1:29:36] } 8... a5 { [%eval 0.31] [%clk 1:28:08] } 9. f3 { [%eval 0.33] [%clk 1:29:47] } 9... Nfd7 { [%eval 0.37] [%clk 1:28:29] } 10. Nxd7 { [%eval 0.37] [%clk 1:29:59] } 10... Nxd7 { [%eval 0.33] [%clk 1:28:51] } 11. e4 { [%eval 0.35] [%clk 1:30:24] } 11... Bg6 { [%eval 0.34] [%clk 1:29:16] } 12. Be3 { [%eval 0.23] [%clk 1:30:38] } 12... Qb6 { [%eval 0.32] [%clk 1:29:28] } 13. Qd2 { [%eval 0.3] [%clk 1:30:13] } 13... e5 { [%eval 0.37] [%clk 1:29:33] } 14. dxe5 { [%eval 0.09] [%clk 1:30:14] } 14... Bc5 { [%eval 0.11] [%clk 1:29:54] } 15. Bxc5 { [%eval 0.12] [%clk 1:30:22] } 15... Nxc5 { [%eval 0.54] [%clk 1:25:46] } 16. Qd6 { [%eval 0.53] [%clk 1:29:27] } 16... Qb4? { [%eval 2.16] } { Mistake. Qxb2 was best. } { [%clk 1:01:34] } 17. O-O-O { [%eval 1.95] [%clk 1:18:58] } 17... Ne6?! { [%eval 2.95] } { Inaccuracy. Nb3+ was best. } { [%clk 0:57:27] } 18. Qd7+? { [%eval 1.6] } { Mistake. Nb5 was best. } { [%clk 1:08:40] } 18... Kf8 { [%eval 1.45] [%clk 0:57:51] } 19. Qd6+ { [%eval 1.47] [%clk 1:09:01] } 19... Ke8? { [%eval 3.03] } { Mistake. Kg8 was best. } { [%clk 0:57:13] } 20. Qd7+? { [%eval 1.69] } { Mistake. Nb5 was best. } { [%clk 0:39:31] } 20... Kf8 { [%eval 1.7] [%clk 0:57:34] } 21. g3 { [%eval 1.32] [%clk 0:39:44] } 21... Re8? { [%eval 2.76] } { Mistake. h5 was best. } { [%clk 0:51:05] } 22. Bh3 { [%eval 2.69] [%clk 0:33:19] } 22... Nc5 { [%eval 2.67] [%clk 0:38:15] } 23. Qd6+ { [%eval 2.81] [%clk 0:32:00] } 23... Kg8 { [%eval 2.68] [%clk 0:38:37] } 24. Kb1 { [%eval 2.71] [%clk 0:27:55] } 24... h5 { [%eval 3.42] [%clk 0:36:12] } 25. Rd4 { [%eval 2.94] [%clk 0:18:38] } 25... Qb6 { [%eval 3.48] [%clk 0:36:36] } 26. Nd5 { [%eval 3.49] [%clk 0:17:55] } 26... Qa7 { [%eval 3.53] [%clk 0:35:25] } 27. Nc7 { [%eval 3.03] [%clk 0:16:46] } 27... Rf8?! { [%eval 4.38] } { Inaccuracy. Rb8 was best. } { [%clk 0:32:22] } 28. Rc4?! { [%eval 3.15] } { Inaccuracy. e6 was best. } { [%clk 0:12:42] } 28... b6 { [%eval 3.49] [%clk 0:29:45] } 29. e6 { [%eval 3.51] [%clk 0:11:25] } 29... fxe6 { [%eval 3.19] [%clk 0:30:03] } 30. Nxe6 { [%eval 2.99] [%clk 0:10:53] } 30... Nxe6 { [%eval 3.33] [%clk 0:30:08] } 31. Bxe6+ { [%eval 3.16] [%clk 0:11:19] } 31... Kh7 { [%eval 3.4] [%clk 0:30:18] } 32. Rxc6 { [%eval 3.26] [%clk 0:10:46] } 32... Rf6 { [%eval 3.85] [%clk 0:30:38] } 33. Qd5 { [%eval 3.13] [%clk 0:10:05] } 33... Qa8 { [%eval 3.68] [%clk 0:21:15] } 34. Rd1 { [%eval 3.25] [%clk 0:08:11] } 34... Re8?! { [%eval 4.18] } { Inaccuracy. Rb8 was best. } { [%clk 0:18:23] } 35. Bd7 { [%eval 4.06] [%clk 0:08:15] } 35... Bf7 { [%eval 4.56] [%clk 0:18:33] } 36. Qb5 { [%eval 4.02] [%clk 0:07:18] } 36... Rxf3 { [%eval 3.6] [%clk 0:17:11] } 37. Bf5+ { [%eval 3.52] [%clk 0:05:54] } 37... Kh8?! { [%eval 5.01] } { Inaccuracy. Kg8 was best. } { [%clk 0:12:51] } 38. Rdc1 { [%eval 5.45] [%clk 0:05:25] } 38... Rb3 { [%eval 5.38] [%clk 0:07:38] } 39. Qe2 { [%eval 4.89] [%clk 0:05:40] } 39... g6?! { [%eval 6.3] } { Inaccuracy. b5 was best. } { [%clk 0:07:47] } 40. Bd7?! { [%eval 4.9] } { Inaccuracy. Rxg6 was best. } { [%clk 0:05:41] } 40... Kg7 { [%eval 6.16] [%clk 0:07:15] } 41. Bxe8 { [%eval 6.16] [%clk 0:04:53] } 41... Qxe8 { [%eval 5.9] [%clk 0:07:44] } 42. e5 { [%eval 5.84] [%clk 0:05:05] } 42... Be6 { [%eval 5.82] [%clk 0:07:59] } 43. Rxe6? { [%eval 3.52] } { Mistake. Rc7+ was best. } { [%clk 0:02:30] } 43... Qxe6 { [%eval 3.3] [%clk 0:08:23] } 44. Rc7+ { [%eval 3.32] [%clk 0:02:58] } 44... Kg8 { [%eval 3.5] [%clk 0:07:53] } 45. Qg2 { [%eval 3.21] [%clk 0:01:36] } 45... Qf5+ { [%eval 3.92] [%clk 0:08:13] } 46. Ka2 { [%eval 3.46] [%clk 0:01:54] } 46... Rf3 { [%eval 3.78] [%clk 0:08:42] } 47. Rc6 { [%eval 3.67] [%clk 0:01:44] } 47... Qd3 { [%eval 3.38] [%clk 0:07:18] } 48. Qc2 { [%eval 3.81] [%clk 0:01:56] } 48... Qxc2 { [%eval 3.87] [%clk 0:05:36] } 49. Rxc2 { [%eval 3.47] [%clk 0:02:24] } 49... Kf7 { [%eval 4.12] [%clk 0:06:01] } 50. Rc6 { [%eval 3.3] [%clk 0:02:10] } 50... Rf2 { [%eval 3.12] [%clk 0:06:25] } 51. h4 { [%eval 2.86] [%clk 0:01:18] } 51... Rf3?! { [%eval 3.73] } { Inaccuracy. Rg2 was best. } { [%clk 0:06:01] } 52. Rxb6? { [%eval 1.68] } { Mistake. Rc3 was best. } { [%clk 0:01:10] } 52... Rxg3 { [%eval 1.23] [%clk 0:06:26] } 53. Ra6 { [%eval 1.55] [%clk 0:01:04] } 53... Rg4 { [%eval 1.89] [%clk 0:06:45] } 54. Rxa5 { [%eval 1.63] [%clk 0:01:32] } 54... Rxh4 { [%eval 1.11] [%clk 0:07:11] } 55. Ka3 { [%eval 1.19] [%clk 0:01:26] } 55... Re4?! { [%eval 1.97] } { Inaccuracy. Rh3+ was best. } { [%clk 0:05:19] } 56. Rc5?? { [%eval 0.0] } { Blunder. Ra7+ was best. } { [%clk 0:00:59] } 56... h4 { [%eval 0.0] [%clk 0:05:28] } 57. a5 { [%eval 0.0] [%clk 0:01:09] } 57... h3 { [%eval 0.0] [%clk 0:05:26] } 58. Rc1 { [%eval 0.0] [%clk 0:00:36] } 58... g5 { [%eval 0.0] [%clk 0:05:07] } 59. a6 { [%eval 0.0] [%clk 0:00:49] } 59... Rxe5 { [%eval 0.0] [%clk 0:05:22] } 60. b4 { [%eval 0.0] [%clk 0:01:12] } 60... g4?? { [%eval 3.25] } { Blunder. Re3+ was best. } { [%clk 0:04:34] } 61. Rh1?? { [%eval 0.0] } { Blunder. a7 was best. } { [%clk 0:01:05] } 61... Re3+ { [%eval 0.0] [%clk 0:04:46] } 62. Kb2?? { [%eval -2.36] } { Blunder. Ka2 was best. } { [%clk 0:01:05] } 62... Re6?? { [%eval 0.0] } { Blunder. Re8 was best. } { [%clk 0:03:19] } 63. a7 { [%eval 0.0] [%clk 0:01:01] } 63... Ra6 { [%eval 0.0] [%clk 0:03:22] } 64. Ra1 { [%eval 0.0] [%clk 0:01:05] } 64... Rxa7 { [%eval 0.0] [%clk 0:04:06] } 65. Rxa7+ { [%eval 0.0] [%clk 0:01:33] } 65... Kg6 { [%eval 0.0] [%clk 0:04:07] } 66. b5 { [%eval 0.0] [%clk 0:01:18] } 66... h2 { [%eval 0.0] [%clk 0:04:25] } 67. Ra1 { [%eval 0.0] [%clk 0:01:34] } 67... g3 { [%eval 0.0] [%clk 0:04:51] } 68. b6 { [%eval 0.0] [%clk 0:01:51] } 68... g2 { [%eval 0.0] [%clk 0:05:15] } 69. b7 { [%eval 0.0] [%clk 0:02:02] } 69... g1=Q { [%eval 0.0] [%clk 0:05:02] } 70. Rxg1+ { [%eval 0.0] [%clk 0:02:26] } 70... hxg1=Q { [%clk 0:05:24] } 71. b8=Q { [%clk 0:02:50] } 1/2-1/2