| Top rating improvement of the month | |
|---|---|
| Calump | 181 |
| Leaving Leaves | 144 |
| half-releaser | 129 |
| Halcyon | 121 |
| Aslan168 | 112 |
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.
Author: Efe Alan
Blacken some cells in the diagram so that in the remaining cells no number occurs more than once per row or column. All unblackened cells must be connected. Two blackened cells may not be adjacent, though may touch by a corner.
Grid control: Click the mouse button at the selected cell to change the color of the cell. Second click will put auxiliary circle, which doesn't affect correctness of the solution, but helps visually. You can also drag the content of one cell to another with the mouse. More details about grid control are at the help page.
Author: Anurag Sahay
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 and arrow cells. Cells that contain clues or shaded grey are not part of the loop. Numbered arrows in such cells indicate the number of cells shaded black in that direction in the grid.
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.