Correct answer: Rb11...Rc4/Rc3/Rc2/R:c6 2.Qf8# 1...Rc1+ 2.Q:c1# 1...Rb5/Ra5 2.Qc1#/Qf8# 1.c7?? zz 1...Rc4/Rc3/Rc2/Rc6 2.Qf8#
