Correct answer: Ke51...Ng5[a]/Nf6[a]/Nf8[a] 2.K:g5#[A] 1...c5/[б]/ 2.Ke3#[Б] 1...g5+ 2.Kf5# 1...d4 2.Ke4# 1.Nf8?? zz 1...Ng5[a]/Nf6[a]/N:f8[a] 2.K:g5#