Correct answer: c4+1.Nf4+? 1...Ke5/[б]/ 2.Re1#[C] 1...Kc4[c] 2.c:d3#[F] 1...Ke4[e] 2.Re8#[Б] but 1...Kc6[d]! 1.Nf6+? 1...Ke6[a] 2.Re1#[C] 1...K