This is so full of crap, and anyway 9.Ng4 is an invalid move, I think you meant Ng3.
Yeah, 9.Ng3 is what he meant. The rest of the moves are correct. To get it into PGN shape, you'd have to clean it up a bit (e.g. change several occurences of ch to +).
This is so full of crap, and anyway 9.Ng4 is an invalid move, I think you meant Ng3.