Correct answer: Qf21...Nh1[a]/Nh5[a]/Nf1[a]/Nf5[a] 2.Kf5#[A] 1...Nd6/[б]/ 2.K:d6#[Б] 1...Ne7[c] 2.K:e7#[C] 1...c:d4[d] 2.Qc7#[D] 1...b:a3[e] 2.Kd7#[E] 1...e3 2.d3#