Correct answer: Qb71...Qb7/Qa8 2.O-O-O# 1.Qf3?? (2.Q:g2#) but 1...Q:f3! 1.Qh7+?? 1...Qh2 2.Ke2#/Kd2#/O-O-O#/Q:h2# 1...Qh3 2.Ke2#/Kd2#/O-O
