books by subject
Brain Teaser Games
Which Came First? A Book of Life Cycles
The Times On This Day: Facts and trivia for every day of the year
The Telegraph Big Book of Quick Crosswords 3 (The Telegraph Puzzle Books)
The Telegraph: General Knowledge Crosswords 4 (The Telegraph Puzzle Books)
The Classic FM Puzzle Book
Norris McWhirter's Book of Millennium Records
The Official Trivial Pursuit Quiz Book: You Can't Make This Stuff Up! (Puzzle House)
The Complete Puzzle Book
A Book of Things
The World's Greatest Book of Useless Information
The IQ Booster: How to Dramatically Improve Your Performance on IQ Tests
Do Cats Have Belly Buttons?: And Answers to 244 Other Questions on the World of Science
Perplexing Lateral Thinking Puzzlers
Mystery Puzzles
CHALLENGING LATERAL THINKING
A Pointless History of the World: Are you a Pointless champion? (Pointless Books)
The I Used to Know That Activity Book: Stuff you forgot from school
I Before E (Except After C): Old-School Ways to Remember Stuff (I Used to Know That ...)
The Classics: All You Need to Know, from Zeus's Throne to the Fall of Rome
A Christmas Cornucopia: The Hidden Stories Behind Our Yuletide Traditions
The New Book of IQ Tests
Mensa Puzzle Book Vol 1: v. 1 (The Mensa Puzzle Book)
Ken Russell Puzzle Challenge
CAN YOU BELIEVE YOUR EYES
Alex's Adventures in Numberland: Dispatches from the Wonderful World of Mathematics
Train Your Brain: 10-minute Su Doku Workout
Games for Thinking (Stories for Thinking)
Devastatingly Difficult IQ Puzzles
Loopy Logic Problems and Other Puzzles (Ivan Moscovich's Mastermind Collection) (Ivan Moscovich's Mastermind Collection S.)
