There's no chess spec, it's not "solved" like it's just a matter of implementation. Chess bot programming wouldn't be a thing otherwise. I think it's really quite funny that you think this super complicated game is just some trivial programming problem. Try it.
replyIt's easy to make a chessbot that only makes valid moves. Making a chessbot that plays optimally is hard.
replyBut OP wasn't talking about solving optimalization problems, but understanding the rules of a business domain.