Correct answer: Qf51...Qg7/Qg5/Qg4/Qg3/Qg2/Qh8/Qh7 2.Nc1#/Nc5#/Nd2#/Nd4#/Na1#/Na5# 1...Q:b3+ 2.R:b3#/Q:b3# 1...Ne6 2.Nd4