Select a difficulty and click "New Game" to start playing.
How to Play
- Fill the 9×9 grid with colors so that each column, row, and 3×3 box contains all nine colors.
- Click on an empty cell to select it, then click on a color from the palette to fill it.
- You cannot change the initial cells.
- Click on a color again or use the eraser (X) to remove it.