Suduko is used with numbers but in fact, its not really a mathematical puzzle at all, and symbols can be used instead. The traditional game is a nine x nine grid comprised of nine cells each with three x three areas. The object of the game is to complete each cell without using any number more than once and each line of nine in the wider grid can also only use each number once. Most Suduko puzzles have some of the cells pre-populated and these numbers cannot be moved. You then have to use logic to determine where to place the other 1-9 numbers. Sounds easy? Well, if none of the cells were pre-populated there would be 6,670,903,752,021,072,936,960 possible combinations which would take you a lifetime to solve. If you struggle with this Suduko game why not start with our easy Sudoku below?