Basic game play

To play the game, start filling numbers 1-9 in the squares such that no row, column, or 3x3 box has any number more than one time.

You can fill a number in a square with the keyboard or the mouse.

Tangentbord

Use the arrow keys or the mouse to select the square you would like to fill. Then type the number you want to put in the square. Typing Backspace will remove the number.

Mus

Click on a square to select it, then click in the center of the square to bring up buttons with the numbers 1-9. Click on a number to select it, or click on clear to clear the square. You can also double-click in the center of a square to bring up the number buttons.

If you enter a number that is in conflict with other numbers on the grid, the conflicting numbers will be highlighted in red.

Figur 2Error highlighting