Correct answer: c61...Nb3 2.Ra4# 1...Nc6/N:d7/Na6 2.Qa6# 1.Ra4+?? 1...Kb3 2.Qb6# but 1...Q:a4! 1.Nf4+?? 1...Kd4 2.c6# but 1...Bd5!