Correct answer: Ke41...Kf8 2.Ng6# 1...Kd8 2.f8Q#/f8R# 1.Rg7?? zz 1...Kd8 2.f8Q#/f8R# but 1...Kf8! 1.c6?? zz 1...Kf8 2.Ng6# 1...Kd8
