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The puzzle below is a current daily puzzle. This puzzle is competitive - you have to register to solve it and participate in the daily competition. To register click Login link in the top right corner.
You can use the scores page to see the results of other competitors for this puzzle.
All the puzzles from the previous days are available at our archive page. Puzzles which are older than 5 days do not affect the score table and can be attempted without registration.
Author: Vladimir Portugalov
Shade some empty cells black to create a single connected wall. No 2x2 square can be completely shaded. Cells with numbers can't be shaded. All unshaded cells form islands. Each island contains exactly one numbered cell which equals the size of the island.
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.