Correct answer: Be61...c5 2.Qd7# 1.Qb5?? zz 1...c6 2.Qe5# 1...c5 2.Qd7# but 1...d3! 1.B:d4?? zz 1...c6/c5 2.Qd7# but 1...Ke7! 1.Be6! (2.Qd5#) 1...