Correct answer: Qg31...d4 2.Qd6# 1.Qf6?? zz 1...d4 2.Qd6# but 1...Kb4! 1.Qe6?? zz 1...Kd4 2.Qe3# 1...d4 2.Qd6# but 1...Kb4! 1.Qc6+?? 1...K