Thank you. I did not know we could do that. Now I understand how Kevin Flynn (TRON) felt.

The Google Earth of computers. I'm amazed my computer can even run this. (Ten year old ThinkPad with integrated GPU.) In the browser no less!

Bravo indeed!

(Also, based on the CSS, the author appears to be GPT.)

EDIT: Can no longer edit my own comment. Lots of folks, on closer inspection, are finding errors in the board behavior. Shame on me for not validating the output before praising the author.