Here is a puzzle book that will have even the masters begging for mercy--and for more. Almost Impossible Number Puzzles has more than 275 puzzles offering a variety of challenges including Sudoku and Kakuro. It's a perfect take-along for brave men and women. CAUTION: Almost Impossible Number Puzzles may strain the brain and induce pleasure.

Here is a puzzle book that will have even the masters begging for mercy--and for more. Almost Impossible Word Puzzles has more than 180 puzzles that will have puzzlers doing a one-eighty and rethinking the way they tackle puzzles. Challenges include anagrams, cryptograms, Wordoku, soundalikes, coded crosswords, and much more. CAUTION: Almost Impossible Number Puzzles may strain the brain and induce pleasure.

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!

A brand-new collection of Killer Sudoku puzzles, the Sudoku variation that has sold over 45,000 copies in the Pocket Posh® series. Our second collection of Pocket Posh Killer Sudoku presents 100 puzzles in four difficulty levels. In addition to the rules of traditional Sudoku, the sum of the digits in each inner cage must equal the number in the top left corner of the cage. This portable package is part of a best-selling series featuring highly stylized, embellished covers and boasting 5 million copies in print. A free trial subscription to The Puzzle Society™ adds extra value.

Our 6th collection of Pocket Posh® crossword puzzles featuring 75 puzzles of medium-level difficulty packaged in our signature, trademarked style. The number 6 symbolizes beauty; in math, it's the first perfect number. Pocket Posh® Crosswords 6 is both beautiful and perfect for hours of puzzling fun. This portable package is part of a best-selling series featuring highly stylized, embellished covers and boasting 5 million copies in print. A free trial subscription to The Puzzle Society™ adds extra value.

Fifth in the series, this Word Roundup collection presents 100 puzzles designed with the flair of our best-selling Pocket Posh style. More than 330,000 Pocket Posh Word Roundup books have sold across the series! We present our 5th Pocket Posh Word Roundup collection for anytime fun and all-around gift giving. Word Roundup™ puzzles are even more popular than word search. Unlike traditional word searches, Word Roundup™ gives clues to the words hidden within the puzzles. The words themselves are for solvers to figure out. This attractive package is sized for portability and is part of our best-selling series of puzzle books that feature highly stylized, embellished covers and boast 5 million copies in print. A free trial subscription to The Puzzle Society™ adds extra value.

Even the most enthusiastic of maths students probably at one time wondered when exactly it would all prove useful in ‘real life’. Well, maths reaches so far and wide through our world that, love it or hate it, we’re all doing maths almost every minute of every day. David Darling and Agnijo Banerjee go in search of the perfect labyrinth, journey back to the second century in pursuit of ‘bubble maths’, reveal the weirdest mathematicians in history and transform the bewildering into the beautiful, delighting us once again.