Correct answer: Qc31...Kd4 2.Qb4# 1...Kf4 2.Qh4# 1.Qb1+?? 1...Kd4 2.Qb4# but 1...Kf4! 1.Qh1+?? 1...Kf4 2.Qh4#/Qf3# but 1...Kd4!
