Correct answer: Nb61...B:f7[a] 2.Be7#[A] 1...R:f7/[б]/ 2.Ra6#[Б] 1.Rb8? zz 1...B:f7[a] 2.Be7#[A] 1...R:f7/[б]/ 2.Rb6#[C] but 1...K:f7! 1.Ra7?? zz
