1.Kh1 ! zugzwang.

1...h2

2.Rg2 ! zugzwang.

2...Kh3

3.Bg6 ! zugzwang.

3...Kh4

4.K:h2 zugzwang.

4...h:g6

5.h7 threat:

6.h8=Q #

3...h:g6

4.h7 threat:

5.h8=Q #

Anti-critical move (Rg2), active sacrifice (Bg6) and switchback (K:h2) for unstalemating Black.