Correct answer: Bf4+1...Ke4 2.Qd5# 1...Kf5 2.Qe6# 1.Bf4+! 1...Ke4 2.Qd5# 1...Kf5 2.Qe6# 1...Kf6 2.Qf7# 1...Kd4 2.Qc4#