[superfx]

> Their chess AI beating Stockfish involved some at least a bit questionable setup.

I believe their eventual Science paper addressed these concerns.

[gambler]

Which paper? How did they address it?

[superfx]

Science paper: http://science.sciencemag.org/content/362/6419/1140

NYT article summarizing some of the issues addressed: https://www.nytimes.com/2018/12/26/science/chess-artificial-...

[gamegoblin]

They played a newer version of SF (newest version at the time the paper was written), let SF use opening book, stronger CPU for SF, non-fixed time control for SF.