87 books • 13 series
Mensa Challenge Your IQ
Classic IQ Tests
Beat the Timer IQ Puzzles
Newton Abbot
Boost Your Business IQ
How to Solve IQ Puzzles
The Times Book of IQ Tests: Book Four (Testing)
IQ and Psychometric Tests (Testing)
How to Solve Word Puzzles
The Amazing 1000 Puzzle Challenge
400 IQ Puzzles
200 Word Puzzles
The Times Book of IQ Tests: Book Three (Testing)
What's Your IQ? (Essential)
The Purple Book of Brain Teasers (Brain Teasers)
The Yellow Book of Brain Teasers (Brain Teasers)
The Red Book of Brain Teasers (Brain Teasers)
The Blue Book of Brain Teasers (Brain Teasers)
The Times Book of IQ Tests: Book Two
Discover Your IQ Potential
Mensa Crosswords
The Times Book of IQ Tests: Book One
The New Book of IQ Tests
Victorian Conundrums