books by subject
Brain Teaser Games
Animalisticus Fantasticus: 600 Amazing and True Facts About Animals
Puzzle-Tastic Wordsearch
Learn How to Solve Cryptic Crosswords: A Course for Beginners
The Ultimate Crossword Collection: 400 Cryptic Crosswords in 4 volumes!
"Puzzler" 1001 Amazing Puzzles
A Question of Sport Quiz Book
The QI Annual 2009
The Natural History Puzzle Book: Discover the natural world with these perplexing family puzzles!
The Hamlyn Word Game Dictionary
The Classical Music Quiz Book
Only Connect: The Difficult Second Quiz Book
Paper Pong
Optical Illusions and Puzzles
Puzzles for Medical Students: Differential Diagnosis
Collins Pub Quiz: 10,000 easy, medium and difficult questions (Quiz Books)
The Times Cryptic Crossword Book 22: 100 world-famous crossword puzzles (The Times Crosswords)
The Pilot Who Wore a Dress: And Other Dastardly Lateral Thinking Mysteries
The Bible Book: A User's Guide
The Big Book of Celebrity Inventions
The Ultimate Boston Bruins Trivia Book: A Collection of Amazing Trivia Quizzes and Fun Facts for Die-Hard Bruins Fans!
Optical Illusions
MENSA CHALLENGE YOUR BRAIN MATH LOG
Learn on the Loo: Making Your Me Time More Productive
The Scottish Quiz Book
Dictionary of Cryptic Crossword Clues
The Language Lover's Puzzle Book: Lexical perplexities and cracking conundrums from across the globe
Chambers Words for Crosswords and Wordgames
Spotlight on Words Book 2: Phonic Wordsearch Puzzles and Activities to Help the Development of Spelling Skills: Bk. 2
The Complete Crossword Companion