[Event "2025 National K-12 Grade Championship"] [Site "lichess.org"] [Date "2025.12.13"] [Round "2.3"] [White "Chakrabartiroy, Arko"] [Black "Tripathi, Amogh"] [Result "1-0"] [WhiteElo "1862"] [BlackElo "2221"] [Annotator "Foisor,Sabina"] [Variant "Standard"] [ECO "?"] [Opening "?"] [StudyName "2025 National K-12 Grade Championships"] [ChapterName "(12th) Chakrabartiroy, Arko - Tripathi, Amogh"] [ChapterURL "https://lichess.org/study/eJCWlgC8/bHKonf6F"] [FEN "2r3k1/R4p2/1p4pp/3P4/1KP3P1/1Q3P2/P3q3/8 w - - 0 49"] [SetUp "1"] [Orientation "white"] { After having arrived late and winning the first game, Amogh struggles to find perpetual in this game and unfortunately for him, ends up losing. Time has also been a factor in the amount of mistakes both players made in this endgame. Black had to try to find perpetual, while White had to find a shelter for his king. Both players failed to find critical moves on a number of occasions, but it is a very instructive position for the readers to analyze. } 49. Ra3?? { With hopes of trading the queens, White gives away the advantage. } 49... b5?? { Black misses the opportunity to take control of the game with } (49... Qe7+! 50. Kc3 b5! $19 { the key move that wins c4, after which Black can finally coordinate their rook and queen for a mating attack or attempt to win further material. }) 50. c5 Qd2+ 51. Kxb5 Qe2+ (51... Rb8+ { winning the queen was necessary, in my opinion, though when low on time it is difficult to judge if there will be a way to draw when seeing two connected and menacing passed c- and d-pawns. } 52. Kc6 Rxb3 53. axb3 Qb4 54. Ra8+ Kg7 55. d6 Qxb3 56. Kc7 Qxf3 57. c6 Qf4 { and Black should hold either by checking or pinning the d-pawn. }) 52. Qd3 { The next part of the game was played well by both sides until... } 52... Rb8+ 53. Kc4 Qb2 54. Qc3 Qe2+ 55. Kd4 Qf2+ 56. Kc4 Qe2+ 57. Qd3 Qb2?? (57... Qh2 { was important to keep checks available. }) 58. d6 Qb5+ 59. Kd5 Qd7 60. Rb3 Rc8 61. Qc4 Qc6+ 62. Ke5 Re8+ 63. Kf4 g5+ 64. Kg3 Qd7 65. Rd3 Re1 66. c6 Qe8 67. Qc5 Qe2 68. Qf2?? (68. c7 { wins on the sport and Black has no threat! } 68... Qxd3 69. c8=Q+ Kh7 70. Qc2 $18) 68... Qe5+! 69. Kg2 Re2 70. d7 Rxf2+ 71. Kxf2 { [#] } 71... Qc5+?? (71... Qh2+ 72. Ke3 Qf4+ 73. Ke2 Qh2+ 74. Kf1 Qh1+ $10) 72. Ke2 Qc2+ 73. Ke3 Qc5+ 74. Ke4?? (74. Ke2! Qc2+ 75. Rd2 Qc4+ 76. Kf2 Qc5+ 77. Kg2 $18) 74... Qe7+ 75. Kd5 Qe6+ 76. Kd4?? (76. Kc5 Qe5+ 77. Kc4 Qf4+ 78. Rd4 Qc1+ 79. Kd5 $18) 76... Qd6+ 77. Ke3 Qe5+ (77... Qf4+ 78. Kf2 Qh2+ 79. Kf1 Qh1+ 80. Ke2 Qh2+) 78. Kd2 Qa5+?? 79. Rc3 (79. Kd1 Qa4+ 80. Ke1 Qb4+ 81. Rd2 Qb1+ 82. Kf2 Qb6+ 83. Kg2 $18) 79... Qxa2+ 80. Ke3 Qe6+ 81. Kf2 Qa2+ 82. Kg3 Qd5?? { The final mistake after which it was all over. } (82... Qd2 { was the last attempt to perpetual } 83. c7 Qe1+! 84. Kg2 Qe2+ 85. Kh3 Qf1+ 86. Kh2 Qf2+ $10) 83. c7 Qd6+ 84. Kh3 { And now Black is out of checks. } 84... Qd1 85. d8=Q+ Kh7 86. Qxd1 { 1-0 White wins. } 1-0