Knight and Pawn endgame

Rubidium has been extremely helpful in giving computer analysis after I played internet games. I played against the Sodium Attack (A00) and failed to refute my opponent's strange opening play. I eventually drew after playing a roughly equal knight and pawn endgame with just a few inaccuracies. 

Almost all comments are from post game analysis.

Feel free to include your own knight and pawn endgames as well. 


Here are some basic positions in knight endgames:

And here is a nice puzzle for more advanced players: