Correct answer: Ne61...Kf5 2.Qf4# 1.Nf7?? zz 1...Kf5 2.Qf4# but 1...K:f7! 1.Nc6?? zz 1...Kf5 2.Qf4# but 1...Kf7! 1.Nb7?? zz 1...Kf5
