books by subject
Brain Teaser Games

The Mammoth Book of Mindbending Puzzles (Mammoth Books)

Bible Blockbusters: Bk. 2

Daily Telegraph Sudoku: Gentle

10-Minute Brain Games: Words and Language

Brain-Teasing Puzzles & Captivating Games: Over 250 Engrossing Activities & Testing Interactions to Vex & Perplex (Family Trivia)

Memory Power-up (Mind Zone Series): 101 Ways to Instant Recall

Dictionary of Doodles

The Big Book of Riddles, Conundrums and Enigmas

Dunk Your Biscuit Horizontally: 106 Strange Scientific Facts

Super Lateral Thinking Puzzles

The Number Puzzler: The Art of Cracking Number Sequences

Follow This Thread: A Maze Book to Get Lost In

Crosswords (Handy Puzzles)

Times Past (Knowledge Quest S.)

Who Wants To Be A Millionaire? The Bumper Quiz Book

Where's Stig? (Top Gear (Hardcover))

The Astronaut Selection Test Book: Do You Have What it Takes for Space?

GALILEO AND THE DOLPHINS

Game,Set And Math: Enigmas And Conundrums (Penguin mathematics)

1998 - Britannica Book of the Year (Britannica Heirloom)

52 Things to Do While You Poo: Puzzles, Activities and Trivia to Keep You Occupied

The Emoji Puzzle Challenge: More than 200 Emoji Enigmas

The Times Su Doku Book 7: 150 original puzzles

The Times Su Doku Book 3: 100 original puzzles

The Times Su Doku Book 6: 150 original puzzles

The Times Difficult Su Doku Book 1: 200 dreadfully tricky Su Doku puzzles (The Times Su Doku)

The Times Fiendish Su Doku Book 1: 200 challenging Su Doku puzzles (The Times Fiendish Su Doku Puzzle Books)

The Daily Telegraph: Sudoku 2

The Times Su Doku Book 8: 150 original puzzles
