Correct answer: Rg3+1...Kh4+ 2.N7f5#[A] 1...Kh6+ 2.N3f5#[Б] 1.Qg2+?? 1...Kh4+ 2.N7f5#[A] but 1...Kh6+! 1.N3f5+[Б]?? 1...Kg4 2.Rg3#/Qg2#/Q