- Published: 18 October 2018
- ISBN: 9780241365458
- Imprint: Penguin eBooks
- Format: EBook
- Pages: 386
The GCHQ Puzzle Book II
Formats & editions
- Published: 18 October 2018
- ISBN: 9780241365458
- Imprint: Penguin eBooks
- Format: EBook
- Pages: 386
The fiendishly difficult puzzle book is back. This is the perfect gift to fuel his ludicrous presumption that he could have definitely been a spy - even better if he's already dog-eared the first version
Huffington Post
This isn't your grandfather's Sudoku book. Rather, it's a puzzle compendium put together by the organisation that made the Bletchley Park breakthroughs - quizzes, bewilderments and brainteasers to challenge even the sharpest of minds
The Gentleman's Journal