Example puzzle

This is an example puzzle. You can solve it the same way as you would solve competition puzzle, but result never stored. You can reveal an answer for the puzzle by clicking "Show answer" link.

Akari

Author: Andrey Bogdanov

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Place light bulbs in selected white cells so that each white cell is illuminated. Light bulbs illuminate every white cell in all four orthogonal directions until blocked by a black cell. No light bulb can be illuminated by another light bulb. Clue numbers correspond to the number of light bulbs in the four orthogonally adjacent cells.

Example puzzle

Grid control: Click the mouse button at the selected cell to set/remove a bulb. More details about grid control are at the help page.