A collection of over 100 logic, word and number puzzles to excite, entertain and exercise your brain!

Shadowbox is a new breed of crossword puzzle, the progeny of Fill-In crosswords and Skeleton crosswords. Faced with a seemingly random arrangement of grey and w

Never met a puzzle you couldn't solve? With this comprehensive compendium of mind-boggling brain busters, you may have finally met your match. Choose from among

Want to keep your brain active and in trim? Challenge your mind with The Penguin Book of Puzzles . . . From the riddles of the ancients to puzzles that perplex

This book discusses how to design "good" geometric puzzles: two-dimensional dissection puzzles, polyhedral dissections, and burrs. It outlines major categories