60-Second Brain Teasers Pencil-Free Puzzles contains 201 no-pencil-required brain twisters that take one minute or less. These completely original puzzles range from easy to near-impossible!At your ho
Here's the biggest and most exciting book of sudoku puzzles ever compiled. Over 400 new puzzles designed to satisfy all levels from beginner to expert are featured, with all kinds of challenges, all l
This brilliant new puzzle collection from the creators of the hugely successful The Mammoth Book of Puzzles and The Mammoth Book of Astounding Puzzles features a cumulative IQ scoring system based on
The variety of math, logic, and word puzzles range from reasonably straightforward to fiendishly difficult in this comprehensive collection. Fully endorsed by the International High IQ Society, this
Everyone is waking up to a whole new world of puzzles from Japan. Hot on the heels of Sudoku, here is the biggest ever collection of Kakuro and other exciting new games. Like Sudoku but with a mathem
