Correct answer: Qb11...K:d5[a] 2.Qf5#[A] 1.d6[Б]? (2.Qf5#[A]) but 1...K:b5! 1.Qf2+? 1...K:d5[a] 2.Qf5#[A] but 1...K:b5! 1.Qf5[A]? (2.d6#[Б]) but 1...K:b5!