Win by connecting every tile to the power source in the center.
- Tap a tile to turn it clockwise.
- Tap and hold a tile to lock it. Hold again to unlock.
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Locking is optional. It keeps a stray tap from turning the tiles you're sure about.
- The power source turns too.
Every solution earns a checkmark. Solve in the fewest possible moves for a gold star.
A new puzzle arrives every day.