Correct answer: Rb81...Kb3 2.Qb2# 1.Qe7+?? 1...Kb3 2.Qa3# but 1...K:b5! 1.Qc5+?? 1...Kb3 2.Qa3# but 1...K:c5! 1.Qd6+?? 1...Kb3 2.