Correct answer: b61...Ke8 2.Qe7# 1.Qc7+?? 1...Ke8 2.Qe7# but 1...K:c7! 1.Qb7?? zz 1...Ke8 2.Qe7# 1...Rd7 2.Qb8# but 1...c:b5! 1.b6! zz
