Correct answer: Rg41...Q:e4+ 2.B:e4# 1...Qc5 2.N:c5# 1...Qg5 2.N:g5# 1...Q:f6 2.Nf2#/N:f6#/Ng3#/Ng5#/Nd2#/Nc3#/Nc5# 1...Qc3 2.N:c3