What is that you refer to as "live chess"?
Basically everything except daily chess.
I don't belive this to be the case in practice.
If you took lots of notes on many games of a particular opening variation and a few good lines and then studied the resulting endgames and had a strong understanding of each sides plans...you could easily get banned for assistance in daily without any proof of an acknowledged federation's rating. Let's say you played a themed opening tournament and did very well...you will now be in the spotlight.
They say you can use opening books. I'm not sure, but I doubt they have every opening book programmed with all the lines/games included. So, use those books at your risk as well after a certain point in the game.
https://www.chess.com/legal/fair-play
- You may use Opening Explorer or other books without engine evaluations in Daily chess only (not in Online / Live play)
"Yeah but if I don't give myself the time to find the patterns I'll never leatn to see them."
Ok, try to remember the number 67 for next week. If I ask you tomorrow, you are more likely to remember it.
My birth year so I think I'll manage!
Ok, how about 23942093423049872304723482.28347298347293847239847239847239847239847293847298347923874
I will ask you this number in the year 2025.