Mao!

There is a Mao in f5, and Pe2 is a Royal Pawn (a King which has all the powers and properties of a Pawn, ok, but a King). Solution? :)

Cooked! My solution was 1. e1=Mao, Kxh6 2. Maog2, Maoh4#, but there is 3. Nh3! Sorry :(