Correct answer: Qa51...Kd3 2.Qd2# 1.Kf3?? zz 1...Kd3 2.Qc3#/Qd2# but 1...Ke5! 1.Kf5?? zz 1...Kd3 2.Qd2# but 1...Ke3! 1.Qb2+?? 1...
