Correct answer: Ra41...Nd5 2.N6d7#/Na4# 1...Nec6 2.N8d7# 1...Bc3/Rc4/Rb1/Rd1/R:e1 2.Rc4# 1...Ne6/Nf3/Ndf5/Nb3/Nb5 2.Rb5# 1.