Click here to read the Sudoku rules
- Play different sizes of Sudoku grids to
play, e.g. 2x2, 2x3, 2x4, the standard 3x3, 4x4 or even 5x5!
- Record your time taken to complete a puzzle
to see how you perform compared to others
- Challenge your friends to beat your times
- Get a daily puzzle emailed to you
- To use the interactive learning mode