Example puzzle

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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.

Belarusian Snake

Author: Vladimir Portugalov

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Shade some cells black to create a snake - a chain of blackened squares which doesn't touch itself even in a point. Each outlined area should contain exactly three cells occupied by the snake. Areas containing the begin and the end of the snake are marked.

Example puzzle

Grid control: Click the mouse button at the selected cell to change the color of the cell. More details about grid control are at the help page.