Correct answer: Nbd31.Nc2?? (2.Bf7#/N:a3#) 1...Nc6/Nd7/N:a6 2.N:a3# but 1...a:b3! 1.Nbd5?? (2.R3b4#/Rc3#) 1...a:b3 2.a:b3# 1...Nd7 2.R3b4#
