Mitrofanov's Deflection

White to play and win

The diagrammed position is one my favourite endgame studies of all time. It was first shown to me by FM Manuel Weeks way back when, and is rightly considered one of the best endgame studies of all times.
Now, I'm not going to torture you by requesting a solution, but I'm not going to hand one out either. The study itself has an interesting history (in part because the initial version was cooked), but this version stands the test of time (and the brutality of computer analysis). So if you want to find out more about the study, and the author, follow this link. But be warned, the answer is given, in all its brilliance.