Completed example
Left over from building the game's physics — not needed for regular play.
Completed example
Challenge
Sign in to save your progress or share your attempt — one email, no password.
Write up the board you've built here and post it to the Challenges page — anyone can then try to reproduce it themselves, starting from a blank ring.
Sign in first to create a challenge — this saves it to Your Stuff, and nothing typed below survives a page reload until you're signed in.
Make sure your circle looks the way you want before you save — the picture people see on the Challenges page is a snapshot of exactly what’s there right now.
Use your example only