Correct answer: Ng51...Bd4[a] 2.Nf4#[A] 1...Rd4/[б]/ 2.Nf2#[Б] 1...Bd6 2.Qd5# 1.Nf2+[Б]?? 1...Kd4 2.Qe4# but 1...B:f2! 1.Qd5+?? 1...Bd4[a] 2