Andreas Bricelj designed a Sudoku game for his Mac computer. You can either play on your desktop or print the Puzzles to PDF. Sudoku v1.1 is published under GNU PUBLIC LICENSE Version 2, June 1991.
Simple Sudoku makes high quality puzzles that are symmetrical, have a single solution, and do not require trial & error to solve. The user can also choose between five levels of complexity – from Easy to Extreme. Each puzzle is generated randomly so there is an almost limitless selection.