240 Puzzles to Entertain Your Brain

They're fun. They're entertaining. They're... Absolutely Addictive

Warning! Once you start solving these puzzles, you won't want to stop!

Here are 240 fabulous and sometimes wildly innovative Sudoku, all challenging enough to give your brain a good workout. And because each one is smartly constructed, you'll never get frustrated, even as you work your way up to the hardest "Big Mind Challenge" selection.