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 "Unknown141"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "8/1p2ppkp/q2p2p1/3Pn3/1p1NP1P1/1P2QPK1/r6P/2R5 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Qg5 f6 ( { Black can try: } 1... h6 2. Nf5+ Kg8 3. Rc8+ Kh7 4. Qxh6# ) ( { Black can also try: } 1... Qa8 2. Nf5+ Kh8 3. Nxe7 Kg7 4. Nf5+ Kf8 5. Qe7+ Kg8 6. Nxd6 h5 7. Qxe5 h4+ 8. Kh3 Qf8 9. Rc8 Qxc8 10. Nxc8 { White wins with a
large material advantage. } ) 2. Ne6+ Kf7 3. Qh6 Ke8 4. Qf8+ Kd7 5. Qd8# 1-0