Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. Nc3/3...dxe4/4. Nxe4/4...Nd7/5. Ng5/5...h6/6. Ne6

6. Ne6!
This is a sharp and surprising move, but it takes advantage of the weaknesses created by h6. This is one of the points of Ng5, to open of the h5-e8 diagonal.