Zen of Sudoku (2006)

From the creators of Natural Selection comes Zen of Sudoku, a relaxing, easy to play version of Sudoku for your PC. Relax with hand-painted Japanese-styled backgrounds, no timer and lush natural soundscapes. Teaches you the basics of Sudoku through advanced strategies like "naked pairs", "x-wing" and "locked candidates". Play unlimited puzzles, print them to finish offline and enter custom puzzles from other sources. Unlock trophies, backgrounds and more.