Correct answer: Qb11...Ref7/Rg7/Rh7 2.R:e5# 1...Ng4/Ng8/Nh5/Nh7/Ne8/N:d7 2.d6# 1...Rfe8/Rd8/Rc8/Rb8/Ra8/Rg8/Rh8 2.N:f6#