Akari GlowLight Up puzzle rules

How to play Akari.

Place bulbs so every white cell is lit, while making sure no bulb shines directly onto another.

Light travels in straight lines until it reaches a black wall or the edge of the board.

The goal

Every open cell must be illuminated by a bulb in its row or column. A bulb lights its own cell too. Black cells block light, and bulbs cannot be placed on them.

Numbered walls

A number on a black wall tells you exactly how many bulbs sit in its orthogonally adjacent cells. Diagonals do not count. An unnumbered wall has no adjacent-bulb requirement.

Good first moves

Mark every cell around a 0 as impossible. If a numbered wall has exactly as many available neighbours as bulbs still needed, all those neighbours must contain bulbs. After placing a bulb, mark every visible cell in its row and column as unable to contain another bulb.