Correct answer: Nd21...Ng4/Nh1/Nd3 2.Rh1# 1.Ne3? (2.Nf1#[A]) 1...Ng4 2.N:g4#/Rh1# but 1...Ne4! 1.Ne5? (2.Nf3#[Б]) 1...Ng4 2.N:g4#/