Akari
Place lamps to light every white cell.
- Tap a white cell to place a lamp. Tap again to mark it with an X ("definitely not a lamp"). Tap once more to clear.
- Lamps shine in straight lines until they hit a black cell or the edge.
- Two lamps can't see each other.
- A numbered black cell has exactly that many lamps next to it (orthogonally).
A small example you can play with.
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