Sudoku
How to play
A classic Sudoku has a 9×9 grid divided into nine 3×3 boxes. Every row, column and box must contain the numbers 1 to 9 exactly once. The numbers given at the start stay in place.
Look for a cell with only one possible number, or a number with only one possible position in a row, column or box. Each placement can reveal the next step.
If you would like a reminder of the basics and a simple example, open the rules guide beside the game.