
Is 99.6% accuracy the highest you can go?
I've had over 98%, over 96% etc. on legit games vs. my phone, but I usually lose & hit the back button & find another way. I'm rarely that good even against my phone but can beat most people in jail. Still, I've been looking for highest rated games according to engines for awhile & I think the chess establishment likes to keep that quiet.
I also think AlphaZero probably broke chess & Google is keeping that quiet. "
Long games with 100 accuracy is a scam. I'm not talking about if you are playing with a weaker player, but if you're playing a long game with a same rated player or a higher-rated player with 100 accuracy, you're probably… cheating. Short games may have 95+ accuracy because it has fewer moves.

100% is possible https://www.chess.com/article/view/5-perfect-chess-games