Correct answer: Kc71...Ra5 2.Qb7# 1.Nd3? (2.Nc5#[Б]) 1...Ra5 2.Qb7# but 1...Rc2! 1.Na4? (2.Nc5#[Б]/Qb6#[A]) 1...Rb2 2.Nc5#[Б] 1...Rc