Correct answer: Qa51...K:c1 2.Qe1# 1.Qc4?? zz 1...Ke1 2.Qe2# but 1...Kd2! 1.Qe4?? zz 1...K:c1 2.Qe1#/Qc2# but 1...Kd2! 1.Qh4?? zz 1.
