Correct answer: Nb61...Bb6/Ra4/Ra3/Ra2/Ra1 2.Bh6#/Bd6# 1...B:f2+ 2.R:f2# 1...Bb8/Rb6 2.Ng4#/Nh1#/Nh3# 1...Ra5/Rh6 2.Bh6# 1.