White plays and wins in 4 moves https://lichess.org/BWQBxv8l
- Qb6 Ka1 2. Kd3 Ka2 3. Kc2 Ka1 4. Qb1#
The analysis board also does checkmate in 4 moves
- Qc3 Kb1 2. Qb3+ Ka1 3. Qc2 a2 4. Qc1#
Source:
https://www.amazon.com/Chess-Puzzles-Advanced-Expert-Level/dp/B0917YQZP1