Correct answer: Bh71...Kf4 2.Nd3# 1...Kf6 2.Ng4# 1...Kd6 2.Nb5# 1.Ng4+?? 1...Kd6 2.Nb5# but 1...Kf4! 1.Nd3+?? 1...Kd6 2.Nb5# but 1.
