books by subject
Brain Teaser Games
Lateral Thinking Puzzles
Braintraining Puzzles
Who am I? A Book of Riddles
Kakuro Challenge (Mini Index Boards)
Are You Smart Enough to Work at Google?: Fiendish Puzzles and Impossible Interview Questions from the World's Top Companies
Are You Smart Enough to Work at Google?: Fiendish Puzzles And Impossible Interview Questions From The World'S Top Companies: Fiendish Interview Questions and Puzzles from the World’s Top Companies
What's Your Friend's IQ?
The Chicken from Minsk: And 99 Other Infuriating Brainteasers
Mensa Number Puzzles
Rubik's Puzzles (Puzzle Books)
Super Sudoku
Mindbenders and Brainteasers: 100 Maddening Mindbenders and Curious Conundrums: Where Maths Meets Creative Thinking
Mind-Bending Conundrums and Puzzles (Mind Bending Puzzle Books)
Mind-Bending Lateral Thinking Puzzles
More Mind-bending Lateral Thinking Puzzles: v. 2
Mind-Bending Lateral Thinking Puzzles
Five-minute Crime Lateral Thinking Puzzles (Puzzles Books)
Bumber Compendium of Mind-bending Puzzles (Mystery puzzle books)
IQ Puzzles
Brain Boosting Visual Logic Puzzles (Puzzle Books)
Brain Boosting Cryptic Puzzles (Puzzle Books)
Brain Boosting Lateral Thinking Puzzles (Puzzle Books)
Tremendously Tricky IQ Puzzles
How Many Socks Make a Pair?: Surprisingly Interesting Maths
Great Britons: 100 Pocket Puzzles: Crosswords, wordsearches and verbal brainteasers of all kinds
Sudoku X: The Only Puzzles with the 'x' Factor: 1st
Big Book of Rebus Puzzles
Impossible Worlds: Adventures With Impossible Objects / Optical Illusions (Evergreen Series)
The Floor is Lava: and 99 more screen-free games for all the family to play
