Correct answer: Qh71...Kb8 2.Qb7# 1.e6?? zz 1...Kd6 2.d8Q# 1...Kb8 2.Qb7# but 1...Kd8! 1.Kc3?? zz 1...Kb8 2.Qb7# but 1...Kd8! 1.Kb4?
