The puzzles below are current daily and contest puzzles. These puzzles are competitive and you have to register to solve them and participate in the 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 the daily 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.

Masyu

Author: Efe Alan

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Draw a single closed loop which runs horizontally or vertically between the centers of the cells. The loop cannot intersect or touch itself. The loop must visit all cells with circles. In a cell with a black circle the loop must turn by 90° and must travel straight through the previous and next cell. In a cell with a white circle the loop must travel straight through and must turn by 90° on the previous or the next cell.

Example puzzle

More about this puzzle

Grid control: To draw a line press the mouse button at a start cell and move mouse to another cell holding the button. More details about grid control are at the help page.

Summed Yajilin

Author: Andrey Bogdanov

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Shade some cells black and then draw a single non-intersecting loop through all white cells. Black cells cannot share an edge with each other, but can touch grey cells. Cells that contain clues or shaded grey are not part of the loop. Numbers in such cells indicate the total number of all black cells in the corresponding row and column.

Example puzzle

More about this puzzle

Grid control: To draw a line press the mouse button at a start cell and move mouse to another cell holding the button. Mouse click at a cell paint the cell black. More details about grid control are at the help page.