Correct answer: Bb51...Rb8 2.Q:b8# 1...Ra8+ 2.Q:a8# 1.Qb5?? (2.Qg5#) 1...Rb8 2.Q:b8# 1...Ng6/Nh3/Nh5 2.Qd5#/Qd3# 1...Ne6/Nd
