Correct answer: Nc31.Nb4? zz 1...K:c4[a] 2.Rc2#[C] 1...Kd6/[б]/ 2.Nb3#[A] but 1...K:b6! 1.Q:g5? zz 1...K:c4[a] 2.Rc1#[D] 1...Kd6/[б]/ 2.Qe7#[E]