How do you solve a Sudoku? Fill in the grid so that every row, every column, and every 3x3 box contains the numbers 1 through to 9.
There is only one solution to the puzzle. Sudoku History Reading Comprehension (grades 5-7)
edHelper.com offers hints - you can customize how you'd like your Sudoku!
(for easy or medium difficulty levels)
(for difficult levels)
A great alternative to sudoku puzzles, also try: Runaway Math Puzzles