Knight endgames can be very tricky, especially when there are passed pawns involved.
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[Event "rated untimed match"] [Site "?"] [Date "1933.??.??"] [Round "?"] [White "Alekhin"] [Black "Anon"] [Result "1-0"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "r1bq2kr/p1pp1ppp/1pn1p3/4P3/2Pb2Q1/BR6/P4PPP/3K1BNR w - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1. Qxg7+ Kxg7 2. Rg3+ Kh6 3. Bc1+ Kh5 4. Be2+ Kh4 5. Rh3# 1-0