Correct answer: Nc41...f4 2.Qe6# 1.Qh1+?? 1...K:e3 2.Qf3# but 1...Kf4! 1.Qe6+?? 1...Be5 2.Q:e5# but 1...Kf4! 1.Nf1?? (2.Qe3#/N:g3#/N