Correct answer: Bc11...Kd2 2.Qd4# 1.Bc3?? (2.Q:e1#) but 1...b:c3! 1.Bd4?? zz 1...Kc1 2.Q:e1# but 1...Kd2! 1.Be5?? zz 1...Kc1 2.Q:e1# but 1...<