White plays and wins in 5 moves https://lichess.org/mM4jJBrQ
- Kf3 Qf6+ 2. Qf4 Qg6 3. Qbc7+ Qf7 4. Qcxf7+ Kh8 5. Qh4#
The analysis board does checkmate in 5 moves
- Ke1 Qa1+ 2. Qxa1 Kg6 3. Qf8 Kh5 4. Qe5+ Kg6 5. Qfg7#
Source:
This publication is in my collection "500 chess puzzles. Mate in 5. Advanced & Expert Level."