Correct answer: e:f41...Kd5 2.Qd4# 1...Nd5 2.N:b7# 1...Bd5 2.Q:c7# 1.Qb4+?? 1...Kd5 2.Qd4# but 1...Ke5! 1.e:f4! (2.Qe5#) 1...Bd5 2.Q:
