Is there a live version to try?
Discussion
no live version, but if you go to the github repo, go in the public folder and download spa.html. you can just open that file in your browser to play.
You can use Google Pages to offer a live version, or use githack:
https://raw.githack.com/Letdown2491/josephs-squares/main/public/spa.html
s/Google/Github/