Correct answer: Qb51.Qb4?? zz 1...K:c2 2.Qa4# but 1...K:e2! 1.Qa3?? zz 1...K:c2 2.Qa4# but 1...K:e2! 1.Qa2?? zz 1...K:c2 2.Qa4# but 1...K