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.

Lighthouses

Author: Andrey Bogdanov

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Place boats into some cells. Cells with boats can not share a point with each other and with numbered cells. Numbers are lighthouses which show how many boats are illuminated by the lighthouse. Each lighthouse illuminates all boats in the same row or the same column.

Example puzzle

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