Correct answer: Bb71...Rd4 2.R:b5# 1...Bg1/Bc7+/Ng3/e5 2.Qc7# 1...Bd6 2.Q:b5# 1...a6 2.Qb6# 1...Qd6 2.Q:b5#/Qc7#/Q:a7# 1...Nf2/Ng5/N