[Event "NACCL Season 6 - Week 4 Puzzles: Easy #1"] [Site "https://lichess.org/study/I0ZoSKd2/zHI16nOH"] [Result "*"] [UTCDate "2022.12.05"] [UTCTime "20:32:54"] [Variant "Standard"] [ECO "?"] [Opening "?"] [Annotator "https://lichess.org/@/Giannatos"] [FEN "4rrk1/p2p2pp/1pp2q2/3npnN1/5PP1/2PQ1R2/P1PB3P/R2K4 b - - 0 20"] [SetUp "1"] [Source "https://lichess.org/study/I0ZoSKd2/zHI16nOH"] [Orientation "white"] [ChapterMode "gamebook"] 20... Nh4 { Puzzle Level: Easy This is from the game Max Ranis (DRW) v. Carl Pickering (Google) Black had a great position but his last move cost him the game. White to play and win. } 21. Qxh7# *