Correct answer: Nd71.Qg7+? 1...Kc8[a] 2.Qc7#[C] 1...Ka8/[б]/ 2.Qa7#[D] but 1...K:b8! 1.Bf4?? zz 1...Ka8/[б]/ 2.Qg2#[A] but 1...Kc8[a]! 1.Nd6+[Б]
