Correct answer: f8N1...Kf3 2.Bc6# 1.Bd7?? zz 1...Kf3 2.Bc6# 1...Kd3 2.Bf5# but 1...Kd5! 1.f8Q?? zz 1...Kd3 2.Qf5#/Bg6# but 1...Kd5
