books by subject
Mathematical Games
Crazy Creature Picture Puzzles
Doctor Ecco's Cyberpuzzles: 36 Puzzles for Hackers and Other Mathematical Detectives
From Penrose Tiles to Trapdoor Ciphers
Mathematics and Plausible Reasoning, Volume II: Patterns of Plausible Inference
The Puzzling Adventures of Dr.Ecco
Mathematical Snacks: A Collection of Interesting Ideas to Fill Those Spare Moments (Collection of Interesting Topics and Ideas to Fill Spare Mom)
Fermat's Last Theorem: The Story of a Riddle That Confounded the World's Greatest Minds for 358 Years
The Times Fiendish Su Doku Book 1: 200 challenging Su Doku puzzles (The Times Fiendish Su Doku Puzzle Books)
Life's Other Secret: The New Mathematics of the Living World (Allen Lane Science S.)
Fantastic Book of Math Puzzles
The Man Who Counted: A Collection of Mathematical Adventures
The Maths Gene: Why Everyone has it, but most people can't use it
Lewis Carroll's Games and Puzzles (Dover Recreational Math)
The Times Killer Su Doku Book 7: 150 lethal Su Doku puzzles (The Times Su Doku)
The Golden Ratio: The Story of Phi, the Extraordinary Number of Nature, Art and Beauty
KAKURO PUZZLE BOOK: 120 Original Cross Sum Puzzles
Mathematical Byways in Ayling, Beeling and Ceiling (Recreations in Mathematics S.)
Secret Service Brainteasers: Do you have what it takes to be a spy?
Migloo's Day
The Times Super Fiendish Su Doku Book 4: 200 challenging puzzles from The Times (The Times Su Doku)
The Number Mysteries: A Mathematical Odyssey through Everyday Life
Guesstimation Solving the Worlds Problems on the Back of a Cocktail Napkin: Solving the World's Problems on the Back of a Cocktail Napkin
Amusements in Mathematics (Dover Recreational Math)
Numbers & Proofs (Modular Mathematics Series)
How to Take a Penalty: The hidden mathematics of sport
Carol Vorderman's Massive Book of Sudoku
Mathematical Bafflers (Dover Recreational Math)
Origami, Eleusis, and the Soma Cube: Martin Gardner's Mathematical Diversions: 2 (The New Martin Gardner Mathematical Library, Series Number 2)
The Universe in a Handkerchief: Lewis Carroll’s Mathematical Recreations, Games, Puzzles, and Word Plays