I built a fully functional chess computer in vanilla minecraft! Download link below. I noticed after rendering that it cut off the bottom part of the screen with the commands, sorry about that. The commands I used are /function and /datapack enable. You should be able to hit tab and see the options after that. https://www.mediafire.com/file/bl286nmo1j4avex/2024-12-12_09-33-30_Chess.zip/file