Size: 87 KB
The object of sudoku is to fill in the entire 9x9 grid so that every row, column and 3x3 region contains the numbers 1 through 9 (leaving them without repeat numbers). Some cells are already occupied by numbers at the start of the game. The numbers in these cells can't be changed. To add a number, first select a number on the control pad located to the left of the grid. Then click on a cell to add that number.
Left click to select numbers and add them on the grid. Numbers can also be selected with the corresponding key on your keyboard.