Correct answer: Bc41...c:b2/B:b2 2.Nc3# 1.Nc6?? (2.Qb4#) but 1...Nc2! 1.Nd5?? (2.Qb4#) but 1...Nc2! 1.N:a2?? (2.Nb4#/N:c1#/N2:c3#/Qb4#)
