Correct answer: Qd51...Kf1 2.Qf3# 1...Nf3/Ng2/Nd3/Nc2 2.Qd3# 1.K:a3?? zz 1...Kf1 2.Qf3# 1...Nf3/Ng2/Nd3 2.Qd3# but 1...Nc2+!