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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.

Yin Yang

Author: Andrey Bogdanov

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Do you want to restart the puzzle? All progress will be lost!

Do you want to revert solving progress to the savepoint?

Congratulations! The puzzle has been solved correctly!!

Fill every cell with either a black circle or a white circle. No 2x2 square of cells can be entirely filled with circles of the same colour. All cells filled with the circles of one colour must form a single edge-connected region.

Example puzzle

Grid control: Click the mouse button at the selected cell to change the color of the cell. You can also drag the content of one cell to another with the mouse. More details about grid control are at the help page.