The pawn wil advance twice and promote to a queen, after which the win is trivial (both squares the pawn moves to are protected, by the rook and the Knight). I

The pawn wil advance twice and promote to a queen, after which the win is trivial (both squares the pawn moves to are protected, by the rook and the Knight). In reply black can only try to give endless checks with his queen, but the white king can hide behind the Knight and they will end.