Who says puzzles are useless?

Aye, even if black had gone h3 or h2 on his 78th move you could have eventually zugzwanged (is that the correct terminology) him away from the pawn :)
Aye, even if black had gone h3 or h2 on his 78th move you could have eventually zugzwanged (is that the correct terminology) him away from the pawn :)