Correct answer: Rb41...Ra4 2.R:a4#[A] 1...Ra3 2.R:a3#[Б] 1...Ra7 2.Nb6# 1.Rb3? (2.Rb8#) 1...Rb5[a] 2.Ra4#[A] 1...Qh4+/[б]/ 2.Re7#[C] 1...Q<