Oak Systems Sudoku The ultimate Sudoku program, this does it all. Create and play an endless supply Sudoku puzzles on your PC, with our unique and intuitive mouse interface. Play against the clock and compete to ... Cost: $12 Buy full version       Trial version       Publisher: Oak Systems     Descriptions Oak Systems Sudoku: The ultimate Sudoku program, this does it all. Create and play an endless supply Sudoku puzzles on your PC, with our unique and intuitive mouse interface. Play against the clock and compete to get in the roll of honour. Play 9x9 or 16x16 puzzles, at 5 levels of difficulty. Pencil in your working as you go with right mouse button, confirm your choice with the left button. Unique coaching modes to help you learn or solve the trickier puzzles. Enter the puzzles from the newspaper and play them as a normal game, or have the program solve it for you and show you the answer. You can also print out puzzles to play on paper, and save a game to return to later or to mail to a friend. Full undo/redo history so you can backtrack through your game.