Correct answer: Qb11...Rb5 2.Q:b5# 1...Rd7 2.Q:d7#/B:e6# 1...Rd8 2.B:e6# 1.Qb6?? (2.Q:c5#/R:c5#/R:d6#) 1...Rc:c6 2.Qd4# 1...Rb5 2.