The problem with this is chatgpt is shit at facts. You ask it a question and it might just give you bullshit, and you tell it to provide a citation and it will happily invent one. There's no easy way to verify whatever it says to you, other than going to the source, which kind of defeats the whole purpose of this exercise.

The author of the article used the premium subscription of ChatGPT to feed it the rulebook as a pdf. One rulebook at a time. Seems a bit tiresome