Correct answer: Qg71...Kc7 2.Qe7# 1.N8b7?? zz 1...Kc7/Kc6 2.Qc8# but 1...Ke6! 1.Qe8+?? 1...Kc7 2.Qe7# but 1...K:d6! 1.Qg7! (2.f8Q#
