![NCSC UK on Twitter: "Our challenge to you on #WBD19 - how fast can you complete puzzle 221 on page 134 of the @GCHQ Puzzle Book II? Our best time will obviously NCSC UK on Twitter: "Our challenge to you on #WBD19 - how fast can you complete puzzle 221 on page 134 of the @GCHQ Puzzle Book II? Our best time will obviously](https://pbs.twimg.com/media/D1C_vLBWwAIAMlp.jpg:large)
NCSC UK on Twitter: "Our challenge to you on #WBD19 - how fast can you complete puzzle 221 on page 134 of the @GCHQ Puzzle Book II? Our best time will obviously
![Puzzles for Spies: The brand-new puzzle book from GCHQ: GCHQ, HRH Prince William of Wales, Princess of Wales: 9780241579909: Amazon.com: Books Puzzles for Spies: The brand-new puzzle book from GCHQ: GCHQ, HRH Prince William of Wales, Princess of Wales: 9780241579909: Amazon.com: Books](https://m.media-amazon.com/images/I/71D0CXK0XvL._AC_UF1000,1000_QL80_.jpg)
Puzzles for Spies: The brand-new puzzle book from GCHQ: GCHQ, HRH Prince William of Wales, Princess of Wales: 9780241579909: Amazon.com: Books
![Fancy yourself as the next James Bond? UK spy agency GCHQ launches new codebreaker competition - Mirror Online Fancy yourself as the next James Bond? UK spy agency GCHQ launches new codebreaker competition - Mirror Online](https://i2-prod.mirror.co.uk/incoming/article9075700.ece/ALTERNATES/s615b/19-April-17-GCHQ-Puzzle-Book.jpg)
Fancy yourself as the next James Bond? UK spy agency GCHQ launches new codebreaker competition - Mirror Online
![Puzzles for Spies: The brand-new puzzle book from GCHQ: GCHQ, HRH Prince William of Wales, Princess of Wales: 9780241579909: Amazon.com: Books Puzzles for Spies: The brand-new puzzle book from GCHQ: GCHQ, HRH Prince William of Wales, Princess of Wales: 9780241579909: Amazon.com: Books](https://m.media-amazon.com/images/I/81Wpf1wfU6L._AC_UF1000,1000_QL80_.jpg)
Puzzles for Spies: The brand-new puzzle book from GCHQ: GCHQ, HRH Prince William of Wales, Princess of Wales: 9780241579909: Amazon.com: Books
![The GCHQ Puzzle Book II by GCHQ: Very Good Soft cover (2018) First Edition, First Printing. | Washburn Books The GCHQ Puzzle Book II by GCHQ: Very Good Soft cover (2018) First Edition, First Printing. | Washburn Books](https://pictures.abebooks.com/inventory/30590719244.jpg)
The GCHQ Puzzle Book II by GCHQ: Very Good Soft cover (2018) First Edition, First Printing. | Washburn Books
![The GCHQ Puzzle Book: Perfect for anyone who likes a good headscratcher by GCHQ (Paperback, 2016) for sale online | eBay The GCHQ Puzzle Book: Perfect for anyone who likes a good headscratcher by GCHQ (Paperback, 2016) for sale online | eBay](https://i.ebayimg.com/images/g/QLcAAOSwKPth8-wT/s-l400.jpg)