In this type of endings the goal of the stronger side is to reach a draw. But if you play knight vs. pawn ending and your opponent has a pawn on a-column or h-column then you can get into serious troubles sometimes.
Let’s look at some examples:
[FEN "8/P1n5/8/8/2K5/8/2k5/8 w - - 0 1"]
1.Kc5 Kc3 2.Kc6 Na8 3.Kb7 (and white wins)
But this position is a draw:
[FEN "8/8/5n1P/8/5K2/8/5k2/8 w - - 0 1"]
1.Kf5 Nh7 2.Kg6 Nf8+ 3.Kg7 Ne6+ 4.Kf7 Ng5+ 5.Kg6 Ne6 6.h7 Nf8+ (and Nxh7 in the next move)
This position is also a draw:
[FEN "8/1P1n4/8/8/3K4/8/3k4/8 w - - 0 1"]
1.Kd5 Kd3 (black’s king can stay almost whereever. It is not necessary to involve him into fight.) 2.Kd6 Nb8 3.Kc7 Na6+ (now the knight can move to a safe square – compare with the first diagram!) 4.Kb6 Nb8 (draw)
So how is it possible to win this type of ending if you are the side with a pawn? The answer lies in the situation when the opponent’s knight does not have access to the promoting square. See this example:
November 5th, 2009 
petrs 
Posted in 
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white can win
Thanks for showing us these endings.
One wrong move in the ending is normally
all you get,no time to recover.