Correct answer: f51...Kd5[a] 2.Ndb4#[A] 1...Kd7/[б]/ 2.Ndc5#[Б] 1...R:a6/Ra8 2.Qd8# 1...Qc1 2.N:c1# 1...Qb1/Qf1/Qh1 2.Ne1#/Nf2#/Nc1#/N