Correct answer: Q:d51...Re7/R:f7 2.N:d5# 1...d2 2.Ndc2#[A] 1...Nf2 2.Q:f2# 1...Bf4 2.Nf5#[Б] 1.Qf1? (2.Nf5#[Б]) 1...Nf2 2.Q:f2# but 1...Rf3!