MPS-Sudoku Description:

Play Sudoku puzzles on your PC - why use pen-and-paper, when you can point-and-click! MPS-Sudoku has unlimited puzzles for you to play, or you can copy puzzles from newspapers and magazines. MPS-Sudoku can offer clues to the solution as you play, or you can wait until you've finished the puzzle. You can have as much or as little assistance as you'd like. Full undo history. The trial version is a fully functional application.