Correct answer: Qa41...b6 2.Qe7#/Qf7#/Qd7# 1.Kc7?? (2.Qb8#) but 1...a5! 1.Qe7?? (2.Q:b7#) but 1...Kb6! 1.Qf7?? (2.Q:b7#) but 1...Kb6! 1.Qg6?