This website provides free Sudoku puzzles that are easy to print. If you're unaware of what Sudoku is, it's a logic-based placement puzzle. It can also be known as 'Number Place' or 'Nanpure'. The object behind the game is to fill the grid so that each column, row and box contain a number between 1 and 9. Each puzzle is set so that it provides a grid that is partially completed, this is so that there is only one solution to the puzzle.