Knight endgames can be very tricky, especially when there are passed pawns involved.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown380"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "8/2Bk1np1/1P2p3/3pP2K/3P4/8/8/8 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Kg6 Nh6 2. Bd6 Kc6 3. Bc5 Nf5 4. Kf7 g5 5. Kxe6 g4 6. Kxf5 g3 7. e6 g2 8. e7 g1=Q 9. e8=Q+ { White wins with a large material advantage. } 1-0