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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: Andrey Bogdanov

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Put numbers into some cells with numbers to form a single connected group of numbered cells; no 2×2 group of cells may be fully numbered. Each bold region must contain at least one number. Each number must be equal the total count of numbered cells in that region. When two numbers are orthogonally adjacent across a region boundary, the numbers must be different.

Example puzzle

Grid control: Click at a cell reveals the value chooser. Click at the selected value changes the state of the cell. More details about grid control are at the help page.