Correct answer: R:a51...R:f3 2.Q:e4# 1...Rf5/Rg4 2.Bh2# 1...Qg1/Qf1/Qe1/Qc1/Qg2 2.Bd6#/Be5#/B:f4# 1...Qd1+/Q:b1 2.Bd6# 1...Q