Correct answer: Ka61...Kd8/Rb7 2.Qg8# 1...Ra8 2.Q:a8# 1.f5?? zz 1...Kd8/Rb7 2.Qg8# 1...Ra8 2.Q:a8# but 1...f2! 1.Ka6! (2.Qg8#) 1...R