The original d20s doubled as d10s. They came uninked and you were instructed to use two different colored markers to mark one set of 1-0 one color and then second set a different color.

https://nerdlypleasures.blogspot.com/2025/02/holmes-d-dice-replica-review.html?m=1

AI cracks Roman-era board game

the stone is an ancient board game and they have even guessed the rules.

Sounds like they did not crack anything.