Correct answer: Nf51...Nf3/Nf5/Nb5 2.Nc5# 1...Ng6/Nh3/Nh5 2.Nc3#/Nc5# 1...Nfe6/Nd3 2.Nc3# 1.B:c6+?? 1...N:c6 2.Nc5# 1...N