Correct answer: O-O1...Bg5[a] 2.R:g5#[A] 1...B:f6/[б]/ 2.Nd:f6#[Б] 1...R:b2/Rb4/Rb5/Rb6/Rb7/Rb8/R:a3/Rc3/Rd3/Re3/Rf3/R:g3 2.Qf7