Correct answer: O-O-O1...Kb3 2.Qc3# 1...Ng3/Nh2/Ne3/Nd2 2.Nd2# 1.Ra2?? zz 1...Ng3/Nh2/Ne3/Nd2 2.Nd2# but 1...Kb3! 1.Rb1?? zz
