-- Puzzle books full of thought provoking problems and brain teasers-- Clues at the end of each book help with the more difficult problems
- ISBN10 0860204367
- ISBN13 9780860204367
- Publish Date August 1980
- Publish Status Out of Print
- Out of Print 19 October 2003
- Publish Country GB
- Imprint HarperCollins Distribution Services
- Format Hardcover
- Pages 32
- Language English