Correct answer: Rg21...e5 2.Nb6# 1.Kh7?? zz 1...e5 2.Nb6# but 1...g6! 1.Kf7?? zz 1...e5 2.Nb6# but 1...g6! 1.h6?? zz 1...e5 2.Nb6# but 1...g:h6! 1.Qa6?? (2.Q