Correct answer: Ng71.Nc7?? zz 1...Kf8 2.Qa3# 1...Kd6 2.Qe6# 1...Kd8 2.Nc6# but 1...Kf6! 1.Ng7! zz 1...Kf6 2.Qh4# 1...Kf8 2.Qa3#
