Chess Puzzle of the Week (130)

Leonid Kubbel 1HM La Patrie Suisse 1935
White to play and win

A few weeks ago I offered you an endgame study Leonid Kubbel, one of the great masters of the art, taken from an article in the March 2021 edition of The Problemist Supplement by David Shire.

If you think you’ve found the solution, do let me know.