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Crossword Puzzle: IQ up puzzle.

Hiko Minami

The Complete Book of Fun Maths: 250 Confidence-boosting Tricks, Tests and Puzzles (The IQ Workout Series)

Philip J. Carter

Iq Puzzles

Joe Cameron

Giant Book of IQ Puzzles

David J. Bodycombe

The Turing Tests Expert IQ Puzzles (The Turing Tests puzzles)

Eric Saunders

Mensa Boost Your IQ: Hundreds of Challenging Puzzles

Carolyn Skitt

Riddles for Kids Age 9-12: Boost Your IQ with 200 Jokes, Riddles, Puzzles and Brain Teaser Questions for Kids

Ciel Publishing

The Mammoth Book of IQ Puzzles: Stretch Your Puzzle-Solving Abilities to the Limit with 500 New Math, Logic and Word Brainteasers

Nathan Haselbauer

Bletchley Park IQ Puzzles

Eric Saunders

How to Solve IQ Puzzles

Philip J. Carter

The Mammoth Book of New IQ Puzzles

Nathan Haselbauer

The Mammoth Book of IQ Puzzles (Mammoth Books)

carter-philip-j-russell-ken

IQ Puzzles: Aerobics for the Brain!

Heather Dickson

400 IQ Puzzles (Boost Your Brainpower)

Philip J. Carter

The Great IQ Puzzle Book: Over 600 New Brain-Teasing Puzzles

Kenneth A. Russell

Bletchley Park IQ Puzzles

Eric Saunders

IQ Puzzles

Chartwell Books

The Mammoth Book of New IQ Puzzles

Nathan Haselbauer

IQ Puzzles

David J. Bodycombe

Increase Your Puzzle IQ: Tips and Tricks for Building Your Logic Power

Marcel Danesi