Correct answer: Nef5+1.Nc2+?? 1...Kd5/Kc4/Ke4/Ke5/Kc3 2.Qd4# but 1...Kd3! 1.Nef5+! 1...Kd3/Kd5/Kc4/Ke4/Ke5/Kc3 2.Qd4#
