Correct answer: Bg21...Ke4 2.Nf6# 1...Ke6 2.g8Q#/g8B# 1.b8N?? zz 1...Ke4 2.Nf6# 1...Ke6 2.g8Q#/g8B# but 1...Kc4! 1.g8Q+?? 1...K