Make sure to use your king! When all else is equal, the side with the more active king will get the upper hand. If you're unsure how to evaluate a knight endgame, try to see which king is closer to the center or queenside -- the closer king will be able to contribute to the action first.
If you are reading this instead of viewing a chess puzzle or game, then you must enable JavaScript on this website.
[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown709"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "r1b1r1k1/p4ppB/3q1n2/3pN1Q1/Pp1p3R/8/1PP2PPP/4R1K1 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Nxh7 2. Qh5 Qg6 3. Qd1 Qf6 4. Qxd4 Bf5 5. Rf4 Nf8 6. g4 Ne6 7. Rxf5 Nxd4 8. Rxf6 gxf6 9. Kf1 Rxe5 10. Rd1 Nxc2 { Black wins with a large material
advantage. } 0-1