Correct answer: Rc51...Nd5[a] 2.R:c6#[D] 1...Qf1/Qe1/Qd1/Qc1/Qb1/Qa1/Qh1/Qh2 2.N:d4#[A] 1...Be7+ 2.R:e7#[Б] 1...Bf6 2.R:f6#[C] 1...B