Correct answer: Kd31...Kh3 2.Nf4# 1.Kd2?? zz 1...Kh3 2.Nf4# 1...Kf1 2.Ne3# but 1...Kf3! 1.Kd3! zz 1...Kh3 2.Nf4# 1...Kf1 2.Ne3#
