How to play Suduko

Suduko is a simple game to play and requires only logic and patience to succeed. However some puzzles are very difficult and can take a long time to solve if you are new to the game.

However, what ever the difficulty of a Suduko grid, they all have the same simple rule. To complete a puzzle you must fill the empty cells with a number from 1 to 9, so that each row (9 cells across), each column (9 cells down) and each 3 x 3 sub-grid contains the number 1 to 9.