Correct answer: Nd31...Ke6[a] 2.Bf7#[A] 1.Qa1? zz 1...Ke6[a] 2.Bf7#[A] 1...Ke4/[б]/ 2.Qd4#[Б] but 1...d6! 1.Qb3? zz 1...Ke6[a] 2.Bf7#[A] 1...K