Below is the most interesting example especially when you noticed that the defending player Grand Master Anatoly Karpov-former World Champion and endgame maestro lost this fascinating endgame to future World Champion-Veselin Topalov!
Topalov,Veselin (2702) - Karpov analisa,Anatoly (2696)
[D37]Amber-rapid 9th Monte Carlo 24.03.2000
After looking of this game, i search for information about this type of endgame and i found that there is a theory for it. The Russian theoretician Troitsky discovered the following rule:
The Troitsky Line
"if the pawn is securely blockaded by a knight no further then the line, then the side with pawn loses, no matter where the kings are"
Ooh...i gave up already with all this kind of theory ...but for you guys, especially who are planning to be National Master, Fide Master, International Master, Grandmaster whatsoever- you better know this!
you can learn more about this at http://en.wikipedia.org/wiki/Two_knights_endgame