Know the ins and outs of how knights fight against passed pawns. Knights can either blockade a passed pawn, or attack it, but not both! If you're trying to promote a pawn, see if you can deflect the enemy knight using your own knight as bait. Knights are also notoriously bad at dealing with passed rook pawns, as they have less room to maneuver.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Scholz"]
[Black "Lorens"]
[Result "0-1"]
[BlackElo "0"]
[FEN "8/2n5/3p4/2kPp3/4Pp2/N1K2Pp1/6P1/8 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ A classic breakthrough tactic. } 1... Nxd5+ 2. exd5 e4 3. fxe4 f3 4. gxf3 g2 5. Nb1 g1=Q { White wins with a large material advantage. } 0-1