There are altogether 34 main chess rules for grandmaster play however, most people don’t know the 34th chess rule so maybe you need to research it😉
What are the principles of chess
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"64 Commandments" of Chess by Bruce Pandolfini...
https://www.chess.com/blog/RussBell/64-commandments-of-chess-by-bruce-pandolfini
Improving Your Chess - Resources for Beginners and Beyond...
https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond
I haven't checked out the links from Russ yet sorry, but this is a really great summary a teammate just posted!
https://www.chess.com/clubs/forum/view/chess-tips-for-the-improving-beginner
What are the principles/fundamentals of chess I would like to know