Sudoku (includes pencil)

Brain-training fanatics, it is now time to tackle the ultimate number-crunching challenge! With Sudoku, use your powers of logic and deduction to fill every row, column and grid with the number 1 to 9. It might sound simple, but these puzzles will put your logic and sequence skills to the absolute test. With a pencil included, there's no time like the present to get started!