Betcha Can’t Solve This #Chess Puzzle! 12

Here there is only one move that leads to victory (provided of course that white plays all the correct moves afterward).

White to move and win! (P. Cathignol, 1981)

Tags: brilliant endgame, chess, chess puzzle, difficult king and pawn endgame, endgame study, king and pawn chess puzzles, king and pawn endgame study