Another Practical Endgame You Must Know!
I actually got this position while studying on chesstempo, and was rather surprised to find I didn't remember what to do!
Black has established what appears to be an ideal "long side" defense. However, white actually wins this position.
I'll give you all a few hours to find the solution.
"The ability to work hard for days on end without losing focus is a talent. The ability to keep absorbing new information after many hours of study is a talent." - Garry Kasparov