
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. "

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