Nineleaf Lights.
A little light, in the right place.
Preparing your akari light up puzzle…
A little light, in the right place.
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How to play Akari Light Up Puzzle
- 01
Place bulbs only in open white squares.
- 02
A bulb shines horizontally and vertically until a wall or board edge.
- 03
Every open square must be illuminated.
- 04
Bulbs must not illuminate each other; numbered walls specify adjacent bulbs.
Akari Light Up Puzzle: player questions
Does light travel diagonally?
No. Bulbs illuminate straight along their row and column.
What stops a beam?
A black wall or the outside edge of the board stops the light.
Can two bulbs see each other?
No. If an unobstructed row or column connects them, at least one bulb must move.
What does a number on a wall mean?
It gives the exact number of bulbs in horizontally or vertically adjacent open cells.
Does a wall’s number count diagonal bulbs?
No. Only cells sharing one of its four edges are counted.
What does a zero wall tell me?
None of its adjacent open cells may contain a bulb, though they still need light from elsewhere.
Must every lit cell contain a bulb?
No. Most lit cells receive light from another square. The task is coverage, not placing a bulb everywhere.
How do I mark a cell with no bulb?
Use the alternate action to place a no-bulb mark while reasoning through the field.
Can an already lit cell need another bulb?
It cannot contain a bulb if that would make the bulbs illuminate each other. Recheck the line of sight first.
Where is a useful starting clue?
Look for zero walls and numbered walls with exactly enough available neighbors. Also inspect cells that can be lit from only one remaining place.
Nineleaf edition by Good Game Daily. Puzzle engine by Simon Tatham and contributors, used under the MIT license. Original project ↗