Correct answer: Ne21...Ra3/Ra2 2.c4# 1...Nf5 2.Bg2#[A] 1...Ne8 2.B:e6# 1...Nd6 2.Rc5#[Б] 1...e5 2.Nf6# 1.Nf5? (2.Nf6#) 1...Rd4[a] 2.Rc5#[Б]