Logic & Brain Teasers

Bletchley Park Codebreaking Puzzles

Whodunit Mysteries

Riddles Read

Puzzlemaster Deck: 75 Brain Twisters

The Handbook of Conundrums

Merry's Book of Puzzles

The Game of Go: The National Game of Japan

Pictured Puzzles and Word Play

Extreme Brain Workout

Food for the Mind: Or, A New Riddle-book

Classical Enigmas, Adapted to Every Month in the Year

The cross word puzzle book

Brain Boost

Emotional IQ