[Event "U.S. National Elementary School Championship 2024 K3"] [Site "Columbus, Ohio"] [Date "2024.04.27"] [Round "05"] [White "Schaefer, Sasha Milo"] [Black "Samanta, Aayansh"] [Result "1-0"] [WhiteElo "1843"] [BlackElo "1722"] [TimeControl "5400+10"] [Variant "Standard"] [ECO "B28"] [Opening "Sicilian Defense: O'Kelly Variation, Venice System"] [Annotator "https://lichess.org/@/ChessLifeOnline"] [Source "https://lichess.org/study/RWJ340a8/ysss4oXg"] [Orientation "white"] 1. e4 { [%clk 1:30:00] } 1... c5 { [%clk 1:30:00] } 2. Nf3 { [%clk 1:30:00] } 2... a6 { [%clk 1:30:00] } 3. c3 { [%clk 1:30:00] } 3... d5 { [%clk 1:30:00] } 4. exd5 { [%clk 1:30:00] } 4... Qxd5 { [%clk 1:30:00] } 5. d4 { [%clk 1:30:00] } 5... e6 { [%clk 1:30:00] } 6. Be3 { [%clk 1:30:00] } 6... Nd7 { [%clk 1:30:00] } 7. Be2 { [%clk 1:29:35] } 7... Be7 { [%clk 1:30:00] } 8. O-O { [%clk 1:29:35] } 8... Ngf6 { [%clk 1:30:00] } 9. h3 { [%clk 1:28:58] } 9... O-O { [%clk 1:28:40] } 10. Nbd2 { [%clk 1:28:58] } 10... Qc6 { [%clk 1:28:19] } 11. Nc4 { [%clk 1:28:33] } 11... b5 { [%clk 1:27:52] } 12. Nce5 { [%clk 1:28:27] } 12... Qc7 { [%clk 1:27:32] } 13. Nxd7 { [%clk 1:27:04] } 13... Nxd7 { [%clk 1:27:22] } 14. dxc5 { [%clk 1:25:49] } 14... Nxc5 { [%clk 1:27:17] } 15. Bxc5 { [%clk 1:23:49] } 15... Bxc5 { [%clk 1:27:16] } 16. Ng5 { [%clk 1:22:31] } 16... h6 { [%clk 1:26:34] } 17. Bf3 { [%clk 1:20:38] } 17... Bb7 { [%clk 1:25:53] } 18. Bxb7 { [%clk 1:20:17] } 18... Qxb7 { [%clk 1:25:53] } 19. Qf3 { [%clk 1:19:06] } 19... Qxf3 { [%clk 1:25:39] } 20. Nxf3 { [%clk 1:19:06] } 20... f6 { [%clk 1:25:31] } 21. Rad1 { [%clk 1:18:56] } 21... Rad8 { [%clk 1:25:31] } 22. Rfe1 { [%clk 1:18:56] } 22... e5 { [%clk 1:25:27] } 23. Kf1 { [%clk 1:15:49] } 23... Kf7 { [%clk 1:25:12] } 24. Nd2 { [%clk 1:14:46] } 24... Ke7 { [%clk 1:24:40] } 25. Nb3 { [%clk 1:13:44] } 25... Bb6 { [%clk 1:24:36] } 26. Nd4 { [%clk 1:13:21] } 26... Bxd4 { [%clk 1:23:25] } 27. cxd4 { [%clk 1:06:35] } 27... Ke6 { [%clk 1:19:59] } 28. dxe5 { [%clk 1:04:25] } 28... fxe5 { [%clk 1:18:52] } 29. Rc1 { [%clk 1:00:10] } 29... Rd2 { [%clk 1:17:34] } 30. Re2 { [%clk 1:00:02] } 30... Rfd8 { [%clk 1:16:25] } 31. Rc6+ { [%clk 0:55:01] } 31... R8d6 { [%clk 1:14:59] } 32. Rxd6+ { [%clk 0:54:39] } 32... Rxd6 { [%clk 1:14:59] } 33. Rc2 { [%clk 0:54:13] } 33... g5 { [%clk 1:14:38] } 34. Ke2 { [%clk 0:54:09] } 34... Kf5 { [%clk 1:14:27] } 35. Ke3 { [%clk 0:53:07] } 35... h5 { [%clk 1:12:55] } 36. f3 { [%clk 0:51:36] } 36... Ke6 { [%clk 1:10:50] } 37. g4 { [%clk 0:48:33] } 37... hxg4 { [%clk 1:10:00] } 38. hxg4 { [%clk 0:48:28] } 38... Rb6 { [%clk 1:09:03] } 39. Rh2 { [%clk 0:44:32] } 39... Kd5 { [%clk 1:08:37] } 40. Rh5 { [%clk 0:43:31] } 40... Rg6 { [%clk 1:07:32] } 41. Kd3 { [%clk 0:42:54] } 41... Rf6 { [%clk 1:06:31] } 42. Ke3 { [%clk 0:40:13] } 42... Rg6 { [%clk 1:06:29] } 43. Rh8 { [%clk 0:38:58] } 43... Rc6 { [%clk 1:02:35] } 44. Kd3 { [%clk 0:38:12] } 44... Rd6 { [%clk 1:01:52] } 45. Rg8 { [%clk 0:33:13] } 45... Ke6+ { [%clk 1:00:48] } 46. Ke3 { [%clk 0:31:33] } 46... Kf6 { [%clk 1:00:37] } 47. Rf8+ { [%clk 0:31:27] } 47... Kg6 { [%clk 1:00:01] } 48. Rf5 { [%clk 0:31:27] } 48... Rc6 { [%clk 0:57:14] } 49. Rxe5 { [%clk 0:30:42] } 49... Rc2 { [%clk 0:57:14] } 50. Re6+ { [%clk 0:30:28] } 50... Kf7 { [%clk 0:57:09] } 51. Rxa6 { [%clk 0:30:28] } 51... Rxb2 { [%clk 0:57:09] } 52. Ke4 { Once again, it all comes down to endgames. Here, Black's defensive task is far from obvious. In some of the other games, we've seen the importance of activating the rook against weak pawns. Here, that's exactly what Black does. But, oh cruel fate, that is not enough! Instead, the other question the defender must often ask in the endgame is what the opponent's winning strategy is. Here, the king capturing the g5-pawn should win, regardless of whether White keeps the f3-pawn. We'll see why shortly. } { [%clk 0:30:09] } 52... Rb4+?? { [%clk 0:57:04] } (52... Rc2! { It is essential to think about White's plans. White needs Ke4-f5 to hit the g-pawn and push the king on to the back rank. But, now, } 53. Kf5 { is met by } 53... Rc5+ 54. Ke4 Rc2 $10) 53. Kf5 { White's king has been escorted to the square it wanted to reach. } { [%clk 0:30:03] } 53... Rf4+ { [%clk 0:57:04] } 54. Kxg5 { [%clk 0:29:58] } 54... Rxf3 { Typically, the defending side *wants* to trade pawns in rook-and-pawn endgames. But White's king is already ahead of the passed g-pawn, meaning we're in "proto-Lucena" territory. That's why this was the wrong strategy. } { [%clk 0:57:03] } 55. Ra7+ { [%clk 0:28:39] } 55... Kg8 { [%clk 0:55:44] } 56. Kg6 $18 { White's king works up the board without fear of checks from the rear. } { [%clk 0:28:25] } 56... Kf8 { [%clk 0:55:41] } 57. g5 { [%clk 0:27:49] } 57... Rg3 { [%clk 0:55:37] } 58. Ra8+ { [%clk 0:27:40] } 58... Ke7 { [%clk 0:55:35] } 59. Rb8 { [%clk 0:25:04] } 59... Ra3 { [%clk 0:55:33] } 60. Rxb5 { [%clk 0:25:04] } 60... Rxa2 { [%clk 0:55:33] } 61. Kg7 { [%clk 0:24:51] } 61... Ke6 { [%clk 0:52:30] } 62. g6 { [%clk 0:24:08] } 62... Ke7 { [%clk 0:51:43] } 63. Re5+ { [%clk 0:23:28] } 63... Kd6 { [%clk 0:51:31] } 64. Re1 { [%clk 0:23:28] } 64... Rg2 { [%clk 0:51:18] } 65. Kh7 { [%clk 0:23:25] } 65... Rh2+ { [%clk 0:48:44] } 66. Kg8 { [%clk 0:23:24] } 66... Rg2 { [%clk 0:48:42] } 67. g7 { [%clk 0:23:24] } 67... Kd7 { [%clk 0:48:39] } 68. Rh1 { [%clk 0:23:08] } 68... Ke7 { [%clk 0:46:01] } 69. Kh7 { [%clk 0:23:02] } 69... Kf7 { [%clk 0:45:45] } 70. Rf1+ { [%clk 0:23:02] } 70... Ke7 { [%clk 0:45:45] } 71. g8=Q { [%clk 0:22:58] } 71... Rh2+ { [%clk 0:45:45] } 72. Kg7 { [%clk 0:22:50] } 72... Rg2+ { [%clk 0:45:38] } 73. Kh8 { [%clk 0:22:49] } 73... Rxg8+ { [%clk 0:45:38] } 74. Kxg8 { 1-0 White wins. } { [%clk 0:22:49] } 1-0