Correct answer: Rd11...g2 2.Bf2# 1...Nc3 2.Nc2#/Q:a7# 1...Na3 2.Q:a7#/Q:d6# 1...Ne8/Nf5/Nf7/Nc8 2.Rc4#/Qc5#/Qb4# 1...Nc4 2.R:c4#