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Regional Akari (15)
Instruction:
Place light bulbs, one per thickly outlined region, in some white cells in the grid so that every white cell is illuminated. A cell is illuminated by a light bulb if they are in the same row or column, and if there are no black cells between them. No light bulb may illuminate another light bulb.
Notes:Variants:
- Instead of "one per thickly outlined region": All the regions contain the same number of lightbulbs.