How to play sudoku:
- Fill in the missing values; each row, column, and 3x3 box contains all the numbers 1 through 9 exactly once.
- To start a new puzzle, click on the difficulty level you want in the drop-down box at the bottom right and wait a few seconds, or click on the green arrow.
- For those who need help, a short tutorial on how to solve sudoku puzzles can be found here.
