Hitori Productivity
Hitori is Windows puzzle-generator software for a logic puzzle most self-publishers have never generated, with exactly one guess-free solution and an answer key on every board. Productivity adds Time Saver, so a hundred-puzzle book graded from a 5 x 5 warm-up to a 12 x 12 marathon is a single setup, and Puzzle Book Studio lays the interior out for you. Try the free demo first.
$97.00