Correct answer: c51.Nd7? (2.Nc5#[Б]) but 1...a2! 1.Na6? (2.Nc5#[Б]) but 1...a2! 1.Nf3? (2.N:d4#[A]) but 1...a2! 1.Ne4? (2.Nc5#[Б]) but 1...a2! 1.Ne6? (2.N