-- Puzzle books full of thought provoking problems and brain teasers-- Clues at the end of each book help with the more difficult problems
- ISBN10 0860204375
- ISBN13 9780860204374
- Publish Date August 1980 (first published 1 August 1980)
- Publish Status Out of Print
- Out of Print 7 April 1998
- Publish Country GB
- Imprint Usborne Publishing Ltd
- Format Paperback
- Pages 32
- Language English