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 "Unknown245"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "r1b4r/ppk4p/3Np1p1/2pp1pB1/7Q/2PB1n2/PP3Pq1/2KR3R w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Bd8+ Rxd8 2. Nb5+ Kd7 ( { Black can try: } 2... Kc6 3. Qxd8 Qg5+ 4. Qxg5 Nxg5 { White wins with a large material advantage. } ) 3. Qxh7+ Ke8 4. Qg8+ Ke7 5. Qg7+ Ke8 6. Nc7# 1-0