A Sudoku program lets you automatically generate a new puzzle in 3 levels of difficulty
Pros & Cons:
It is easy to start Total Sudoku—run the program, point at a blank cell and key in a number between 1 to 9. It comes with an attractive user interface and lets you automatically generate a new puzzle in any of 3 levels of difficulty ('easy', 'medium' or 'hard').
The program helps by coloring a cell green when you enter a digit correctly, or red if you've got it wrong, but it doesn't include a solver for you.
You can save a game in progress, so you can adjourn and come back whenever you want. Or you print the puzzle to paper to fill in.
Total Sudoku was reviewed by Jojo Yee on