Correct answer: Bd71...Q:d6 2.N:f6# 1.Bb7+?? 1...K:d6 2.Qd4# but 1...R:b7! 1.Bd7! (2.Qd3#) 1...K:d6 2.Qd4# 1...Ke4/B:d6 2.Bc6#