Correct answer: Re81...Rb3/Bb1/Be6/Nc4 2.Re6# 1...Qb8/Qa6/Ng2/Nd5 2.e5# 1...Qa7/Qc8 2.e5#/Nc8# 1...Qc6/Qd5 2.Nc8# 1...Q:e4+ 2.N