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.
• 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.