Correct answer: Qb11.Ne3+?? 1...Kb3 2.Qb1# 1...K:b5 2.Qg5#/Nd4#/Nc3# but 1...Kd3! 1.Nd6+?? 1...Kd5 2.Qg5# but 1...K:b4! 1.Qd1?? zz
