Correct answer: Bc81...Be7 2.Qg6# 1.Bd7?? (2.Qe6#) but 1...Ke7! 1.Qg7+?? 1...Ke8 2.Qd7#/Qf8# but 1...B:g7! 1.Qg8+?? 1...Ke7 2.Qf8#
