The clue-and-grid logic puzzles you love in a fun new format! Just read through the clues and click on the grid to mark your squares - red for false and green for true. If you make a mistake, clearing a cell or the entire grid is a snap, much easier than paper and pencil. Hints are available to help you along, and should you need it, the solution to each puzzle is explained in detail. Win/Mac system requirements: Windows Vista/XP/2000/ME/NT/98, 64 MB RAM; Macintosh: OS X (10.3+), 128 MB RAM. ~ Anh