![The GCHQ Puzzle Book II, Bletchley Park Brainteasers, The Scotland Yard Puzzle Book, The Bumper Book of Would You Rather 4 Books Collection Set | The Book Bundle The GCHQ Puzzle Book II, Bletchley Park Brainteasers, The Scotland Yard Puzzle Book, The Bumper Book of Would You Rather 4 Books Collection Set | The Book Bundle](https://www.thebookbundle.com/cdn/shop/products/51ZAe7Q_zeL_500x.jpg?v=1646230131)
The GCHQ Puzzle Book II, Bletchley Park Brainteasers, The Scotland Yard Puzzle Book, The Bumper Book of Would You Rather 4 Books Collection Set | The Book Bundle
NCSC UK on Twitter: "Our challenge to you this #WorldBookDay... How fast can you complete puzzle 221 on page 134 of the @GCHQ Puzzle Book II? Our best time will obviously be
![Waterstones on Twitter: "If your brain is ready for further challenges after 2016's enjoyably tricky GCHQ Puzzle Book, you'll love this second volume. Along with mind-bending puzzles, this new book will also Waterstones on Twitter: "If your brain is ready for further challenges after 2016's enjoyably tricky GCHQ Puzzle Book, you'll love this second volume. Along with mind-bending puzzles, this new book will also](https://pbs.twimg.com/media/DraGm0hWwAEcjI2.jpg:large)