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 "White player"]
[Black "Black player"]
[Result "*"]
[BlackElo "0"]
[FEN "K7/P4k2/8/8/8/8/1r6/4R3 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ Rook Pawn Rooks. } 1. Rc1 { The white rook is moving to b8 where it will drive
the black rook from the b-file. The white king can then excape from its jail
on a8. } 1... Ke7 2. Rc8 Kd6 ( { It is a mistake to move Kd7. } 2... Kd7 3. Rb8 Ra2 4. Kb7 Rb2+ 5. Ka6 Ra2+ 6. Kb5 Rb2+ 7. Kc4 Ra2 8. a8=Q Rxa8 9. Rxa8 { White
wins with a large material advantage. } ) 3. Rb8 Ra2 4. Kb7 Rb2+ 5. Kc8 { The
only winning move. } ( { White can try: } 5. Ka6 Ra2+ 6. Kb6 Rb2+ 7. Ka6 { Leads
nowhere. } ) 5... Rc2+ 6. Kd8 Rh2 7. Rb6+ { The start of a maneuver to push the
black king from its strong position. } 7... Kc5 8. Rc6+ { Inviting the king to
capture the rook on c6. Then the pawn will promote with check. } 8... Kxc6 ( { Black
can try: } 8... Kb5 9. Rc8 Rd2+ 10. Kc7 Rc2+ 11. Kb8 Ra2 12. a8=Q Rxa8+ 13. Kxa8 { White wins with a large material advantage. } ) 9. a8=Q+ { White wins
with a large material advantage.|White can force mate on move 23.|Hey, if you
made it this far, then the mate in 12 more moves is trivial.|I'll show you
the moves...
Whi } 9... Kc5 { White will check the king until the queen can win the
rook. } 10. Qc8+ Kd4 11. Qg4+ Kd5 12. Qf5+ Kc6 13. Qe6+ Kb5 14. Qe5+ Kb4 15. Qxh2 Kc3 16. Qe2 Kd4 17. Kd7 Kc3 18. Kc6 Kd4 19. Kd6 Kc3 20. Kc5 Kb3 21. Qd2 Ka3 22. Kc4 Ka4 23. Qb4# *