Correct answer: Bf61...K:c4 2.Be6# 1...c:d6 2.Nb6# 1.K:c7?? (2.Nb6#) 1...K:c4 2.Be6# but 1...e:d4! 1.Be3?? (2.Qg8#) but 1...e:d4! 1.Be6+?? 1...K