Basic Checkmate for beginners and intermediate players.

This is a basic checkmating pattern. From the first position (Diagram 1).
1. Qxh7+! Kxh7
2. Rh1+ (Diagram 2) Bh6 (Diagram 3)
3. Rxh6+ Kxh6 (Diagram 4)

Can you find the final winning move?