Chess Puzzle of the Week (147)

A Troitzky & V Korolkov 1st Pr Chigorin MT 1938
White to play and win

The latest issue of CHESS includes an entertaining article on the endgame studies of Vladimir Korolkov. In this example he teamed up with the great great Alexey Troitzky to win a first prize.

As always in endgame studies, there’s good news and bad news. The good news is that White has a large material advantage, with two pawns about to promote. The bad news is that his king is stuck in a box and threatened with immediate mate.

So how does White force a win? Come along to the Roebuck (the one in Hampton Hill, not the one in Richmond!) on Thursday and show me your solution!