Lock 2 of 5
Find out which rows open the door
Build a row and try it. Some rows open the door and some don't. When you know why, sort eight new rows.
Tap a tile to change it.
Your progress saves on this device.
Stuck?
A nudge asks you a question instead of giving the rule. Three per lock, never counted against you.
New to this kind of lock? Try the warm-up.