Correct answer: Nf21...Ke5 2.R:d5# 1...e5/d:e4 2.Qc5#[A] 1.Nd6? zz 1...Ke3[a] 2.Nf5#[C] 1...Kc3/[б]/ 2.Nb5#[D] 1...Ke5 2.R:d5# but 1...e5! 1.Qc7