How to play the Color Sort Challenge
The rings start mixed up across the poles. Move them until every pole holds a single color, top to bottom. You can only put rings on an empty pole or on top of the same color, and every pole holds 10 (on Hard, one short pole holds only 3).
It is the color stack challenge from TikTok, where two people race to sort a rack of colored rings and the first one done wins. Here the rack is on your phone, so you don't need the toy to play.
The daily puzzle
Everyone gets the same puzzle each day, in Easy, Medium and Hard. Because the layout is the same, times are a fair race: finish, then send your time to a friend and see who sorts it faster.
Common questions
Can you play the color stack challenge without the toy?
Yes. This version runs free in your browser on a phone, tablet or computer. Tap a pole to pick up its top rings and tap another to drop them.
How do you race a friend?
Finish a puzzle and tap Challenge a friend. The link opens the same puzzle for them, with your time to beat.
Is every puzzle solvable?
Yes. Every layout is checked before you see it.