Correct answer: Nc:e51...f5[a] 2.Ndb6#[A] 1...d:c5/[б]/ 2.N:f6#[Б] 1...N:c5/Nd8/Na5 2.R:d6# 1.Na5? zz 1...f5[a] 2.Nb6#[D] 1...d:c5/[б]/ 2.N:f6#[Б]/Qe4#[C] 1