Simple Sudoku

Simple Sudoku can solve any legal Sudoku puzzle in seconds, and it uses this ability to help users quickly identify mistakes (provided they want help). Simple Sudoku not only lets you input your own puzzles, it also generates new ones for you at runtime (the generated puzzles *always* have exactly one solution).

This program is ideal for Sudoku players of any level, and can even be used by people who want to make and publish puzzles. Everyone is welcome to publish the puzzles Simple Sudoku generates, provided credit is given where it's due.