[Event "Round 6: Montes Orozco, Miguel Angel -"] [Site "lichess.org"] [Date "2025.11.23"] [Round "6.1"] [White "Montes Orozco, Miguel Angel"] [Black "Colville, Julian"] [Result "0-1"] [WhiteElo "2281"] [WhiteTeam "MEX"] [BlackElo "2301"] [BlackTeam "USA"] [Annotator "jjlang"] [Variant "Standard"] [ECO "?"] [Opening "?"] [StudyName "Tactics Tuesday 12/16/2025: North American Junior Champs, Pt. 1"] [ChapterName "Montes Orozco, Miguel Angel - Colville, Julian"] [ChapterURL "https://lichess.org/study/Tclz1WoW/OnnAbySo"] [FEN "2k5/1p6/p7/2P1B3/1P6/2KR3p/6b1/7r w - - 0 65"] [SetUp "1"] [Orientation "white"] { Today's puzzles come from the North American Junior Championships, where Americans Julian Colville and Laurie Qiu earned gold medals in Mexico. In our example, White played } 65. Rd4?? { allowing } 65... h2! { and White had to part with a piece with } 66. Bxh2 Rxh2 { , winning eight moves later in Montes – Colville. Why was 65. Rd4?? such a mistake? Because, now, 66. Rd2 allows ... Rh1-c1+ and the h-pawn promotes. Instead, a move like 65. Kd4!? would meet 65. ... h2 with 66. Rd2 and a draw, as Black has no checks. Every move matters in an endgame! } 0-1