Correct answer: Rb31...e:f5[a] 2.Rd5#[A] 1...Nb4/[б]/ 2.Q:a7#[Б] 1...Bb6[c] 2.Q:e7#[C] 1.Qb3?? (2.Nb7#) but 1...Nb4/[б]/! 1.Qb2?? (2.Qd4#) but 1...Nc3!
