Correct answer: Rf61.Ra6?? (2.Kc2#/Kc4#/Kb3#/Kd3#/Kb4#/Ng6#/Nd7#/Q:g7#/d4#) 1...B:e4 2.Kc4# 1...Ne6 2.Ng6#/Nd7#/R:e6# but 1...N