Knight endgames can be very tricky, especially when there are passed pawns involved.
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[Event "rated untimed match"]
[Site "?"]
[Date "1927.??.??"]
[Round "?"]
[White "Cheron"]
[Black "Polikier"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "r1bqk2r/pppnppbp/6p1/4P2n/2B5/2N2N2/PPP2PPP/R1BQK2R w KQkq - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Bxf7+ Kxf7 ( { Black dare not try: } 1... Kf8 2. e6 { White's position is
crushing. } ) 2. Ng5+ Kg8 ( 2... Ke8 3. Ne6 ) 3. Qd5+ e6 4. Qxe6+ Kf8 5. Qf7# 1-0