Left: Puzzle generation couldn’t be easier, or create your own puzzle by selecting “empty” from the difficulty box. The gentle color scheme helps keep your eyes uncrossed while working on the more fiendish puzzles.
Middle: Macdoku makes solving puzzles a pleasure with cell highlighting, possibility management, and one button solved-cell completion.
Right: Let the solver  take care of those impossible-to-solve puzzles that you can’t wait until next Sunday’s paper to figure out.
Puzzle Generation
Possibility Management