1.Nh3 h6 2.e3 e6 3.Nf4

Black can try several lines:

3...g6 4.Nh5 (or 4.Nc3) 4...Qh4 5.g3 Qe4 6.Nxg7 Kd8 7.d3,

3...f5,

3...h5 4.Qf3 f5 5.Ng6,

3...d5 4.Nh5 Bb4 5.c3 g6 6.Ng6 Kf8 7.Na3,

3...Nf6,

3...Nc6.