Mate in 5 Exercise 105

White plays and wins in 5 moves https://lichess.org/69S6f64O

1. Qa6+ Kb2 2. Qb5+ Ka3 3. Qb4+ Ka2 4. Kc2 Nf2 5. Qb2#

The analysis board does checkmate in 5 moves

1. Qc1+ Ka4 2. Qc4+ Ka3 3. Qb4+ Ka2 4. Kc2 Rxd5 5. Qb2#

Source:

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