BrainBashers Daily Light Up - May 12 - 20 x 20 Hard

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Puzzle Copyright © Kevin Stone

• Light up every square in the grid.
• A number in a square indicates how many bulbs share an edge (but not diagonally) with that square.
• A square is lit if it's in the same row or column as a bulb, as long as there are no black blocks between them.
• No bulb may light another bulb.

[Puzzle Code = LightUp-0512-20x20-Hard-755110]

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