Kent Junior Chess Association (KJCA) Coaching

This is from the game John Nunn v Craig Pritchett in 1985. Nunn is one of Britain’s finest ever players, reaching the top ten in the world at his height. How did he force a win in just two moves?

Answer to the previous puzzle (No 16).

White wins with the spectacular 1 Qh8 +

After 1… K x h8, 2 Be5 Kg8, 3 Rh8 ++