Correct answer: Nf31...K:c1 2.Qd1# 1.Qd4?? zz 1...K:c1 2.Ra1# but 1...g4! 1.Qh5?? zz 1...K:c1 2.Qd1# but 1...g4! 1.Qf3?? zz 1...K:c1 2.Qd1#
