Puzzles

Discover Your IQ Potential: Over 500 Tests of Your Mental Agility

Ball of Confusion

The Great Sherlock Holmes Puzzle Book

Conundrum

Brain Teaser Cryptogram Puzzles

Solve it Like Sherlock

World’s Great Scientific Puzzles Book to Challenge & Solutions: “150 Mixed, Illustrated, All Color”

Word Rebus Puzzles

Cryptogram Puzzle Book New Zealand

Puzzlemaster Deck: 75 Verbal Challenges

Big Book of 150 Unique Puzzles & Solutions

Inspector Danger's Crime Quiz

Matchstick Puzzles

The World of Visual Illusions

Maths Tricks to Blow Your Mind

Twentieth Century Standard Puzzle Book

Slicing Pizzas, Racing Turtles, and Further Adventures in Applied Mathematics (Princeton Paperbacks)

Joy of Jigsaws

Extreme Brain Workout

Tangrams