How to play Akari

Place light bulbs on white cells so that every white cell is lit.
A bulb lights its whole row and column until a black cell blocks the light — but two bulbs may never shine on each other.
A number on a black cell says exactly how many bulbs touch it horizontally and vertically.
Black cells without a number are plain walls — they don't constrain anything.
Tap a cell to place a bulb, again for a dot (no bulb here), once more to clear.

Example

Akari

Light every cell with bulbs

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