[Event "USA-ch (Women)"] [Site "Saint Louis"] [Date "2021.10.09"] [Round "4"] [White "Yip, Carissa"] [Black "Krush, Irina"] [Result "1-0"] [WhiteElo "2402"] [BlackElo "2429"] [Annotator "Lang,JJ"] [Variant "From Position"] [ECO "?"] [Opening "?"] [FEN "r1r3k1/pp1R1pp1/4p2p/4P3/1n2bP2/2R1B3/PP4PP/5BK1 w - - 0 22"] [SetUp "1"] [Source "https://lichess.org/study/4a8VsKMF/Q3zM7LR5"] [Orientation "white"] [ChapterMode "gamebook"] { What was wrong with Black's last move 21. ...Nc6-b4? } { [#] } 22. Rxc8+ (22. Rd4 { also works. }) 22... Rxc8 23. Rd4 { and Black resigned. } 1-0