Correct answer: Rf71...Bc7[a] 2.Bb4#[A] 1...Nf5/Ng6/Ng8/Nd5/[б]//Nc6[c]/Nc8 2.N:f5#[Б] 1...Ng4/Nh1/Nh3/Ne4/Nd1/Nd3 2.Ne4#[C] 1.