Correct answer: Qb71...Kd1 2.Qd2# 1.Qb3?? (2.Q:c2#) but 1...Kd1! 1.Q:d4?? (2.Qa1#) 1...Kd1 2.Qg1# but 1...Kb1! 1.Qb7! zz 1...Kd1 2.Q