books by subject
Brain Teaser Games
The Times Fiendish Su Doku Book 11: 200 challenging Su Doku puzzles (The Times Fiendish Su Doku Puzzle Books)
The Times Quick Crossword Book 22: 100 General Knowledge Puzzles from The Times 2 (The Times Crosswords)
Mensa Mighty Mind Benders Mega Mazes
The Family Quiz Book: 1st
The Puzzle Mountain
Utterly Trivial Knowledge: The Music Game
Things to Make and Do in the Fourth Dimension
Oxford Book of English Verse, 1250-1918
Oxford Anagram Finder (Market House Books)
Life Lessons from a Brain Surgeon: The New Science and Stories of the Brain
The GCHQ Puzzle Book II
Brain Stretchers (Readers Digest)
Will Shortz Presents the Monster Book of Sudoku for Kids: 150 Fun Puzzles
Sudoku
Games of Strategy
Su Doku (Murderous Maths Series)
Kids' Sudoku for Dummies (For Dummies Series)
The Puzzling Adventures of Dr.Ecco (Dover Recreational Math)
Paradox: The Nine Greatest Enigmas in Physics
Paradox The Nine Greatest Enigmas in Physics by Al-Khalili, Jim ( Author ) ON Apr-12-2012, Hardback
The Telegraph All New Quick Crosswords 6 (The Telegraph Puzzle Books)
Daily Mail Big Book of Quick Crosswords Volume 8 (The Daily Mail Puzzle Books)
Daily Mail Big Book of Quick Crosswords 9 (The Daily Mail Puzzle Books)
The GCHQ Puzzle Book
The Canterbury Puzzles (Puzzle Books)
The Penguin Book of Puzzles (Puzzle Books)
Pocket Posh Brain Games: 100 Puzzles
Mensa Logic Puzzles
Test Your IQ: 400 Questions to Boost Your Brainpower