Mate in 5 Exercise 13

White plays and wins in 5 moves https://lichess.org/o4r34zR9

1. Bd8 Kg8 2. Be7 Kh8 3. Nf7+ Kg8 4. Nh6+ Kh8 5. Bf6#

The analysis board does checkmate in the exact same 5 moves

1. Bd8 Kg8 2. Be7 Kh8 3. Nf7+ Kg8 4. Nh6+ Kh8 5. Bf6#

Source:

https://www.amazon.com/Chess-Puzzles-Advanced-Expert-Level/dp/B0917YQZP1