Correct answer: Qf51...Rd8[a] 2.Qe2#[A] 1.Q:b5? (2.Q:d7#) 1...Rd8[a] 2.Qe2#[A] 1...O-O-O 2.Qa6#[Б] but 1...Qa4! 1.Q:f6?? (2.Qe7#) but 1...Qe1! 1
