It is really tough. Tell me the move.
The chap who posted this #1 problem now lives in a carehome in a small village in France. Amazingly he still gets out of bed once a day for a walk around the doghouse. He remembers having played chess aeons ago but checkmates in 1 are beyond his reach. After 15 seconds of physical exercise he occasionally succeeds in moving a pawn from a2 to a3. When it completes he invariably shouts "checkmate!" as he discovered this relieves him of the chore of making another move later. When you visit him take along an instruction booklet as he appears to have forgotten most of the chess rules. If all else fails move on to his sister in the next village. He is rumoured to have passed on the secret of his chess creations to her. Happy Christmas and ditto hunting!
It is really tough. Tell me the move.