Mate in 5 Exercise 68

Black plays and wins in 3 moves https://lichess.org/avCiOrbX/black

1... Qf4+ 2. Kb5 Qb4+ 3. Ka6 Qb6#

The analysis board does checkmate in 5 moves

1... Qf4+ 2. Kb5 Qb4+ 3. Kc6 Qb6+ 4. Kd7 Qd6+ 5. Ke8 Qe7#

Same first steps ;)

Source:

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