In a live game? FRAK NO!
NO NOTES!
NO TABBED UP OPENING DATABASE!
NO TABBED UP ENGINE!
Unless its a Correspondence game ... None of the above is allowed.
Don't be that person... Play honestly and sincerely ..... Way to many ???? players on line out as it is....
I’m talking about regular games, not those one move a day games (I’ve seen chess.com rules say it’s ok to have entire books at your side to play those games).