Correct answer: f41...Kf4 2.Qe4# 1.Bg4+?? 1...Kf4 2.Qd2#/Qe4# but 1...K:g6! 1.Kc2?? zz 1...Kf4 2.Qe4# but 1...c3! 1.Kd2?? zz 1...Kf4
