Mate in 5 Exercise 75

White plays and wins in 3 moves https://lichess.org/dHoRoiCH

1. Bc5+ Ka8 2. Kc7 d2 3. Rb8#

The analysis board does checkmate in 5 moves

1. Bc5+ Ka8 2. Kc7 Ra7+ 3. Kc8 Rc7+ 4. Kxc7 d2 5. Rb8#

Source:

This publication is in my collection "500 chess puzzles. Mate in 5. Advanced & Expert Level."