Here's who came closest to solving GCHQ's 'fiendishly difficult' Christmas puzzle | The Independent | The Independent
GCHQ publishes book of spies' brainteasers for children | GCHQ | The Guardian
How to Crack GCHQ Crypto Puzzle? — Here's the Solution
Can you solve this Christmas brainteaser by UK spy chiefs? | UK News | Metro News
GCHQ's Fiendish Christmas Puzzle Book for 2016 – A licence to puzzle | Intervirals
Tackling the GCHQ 2021 Christmas Card! | PuzzleNation.com Blog
GCHQ sets its 2020 Christmas card challenge : r/puzzles
GCHQ: Nobody got crypto Christmas puzzle correct | WIRED UK
GCHQ Puzzle Book II Solutions — alaricstephen.com
gchq: GCHQ Christmas puzzle 2022: What is this year's GCHQ Christmas Card Challenge, and how to play? - The Economic Times
GCHQ Christmas quiz: Here are the answers to the puzzle no one could solve | Metro News
How to crack British intelligence service's devilish Christmas puzzle
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
Puzzles for Spies: The brand-new puzzle book from GCHQ (Paperback) | Third Place Books
GCHQ and the IET present a new puzzle designed for STEM... - GCHQ.GOV.UK
School pupils aim to crack GCHQ Christmas card code - BBC News
The GCHQ Puzzle Book II: GCHQ: 9780241365434: Amazon.com: Books
Can You Solve These Puzzles Set By GCHQ Experts?
The GCHQ Puzzle Book - SPYSCAPE
I spy ... another fiendishly difficult GCHQ puzzle book | GCHQ | The Guardian
Think you're a code-breaker? Try these GCHQ puzzles | ITV News
A GCHQ puzzle - GCHQ.GOV.UK
GCHQ on Twitter: "Here's the first of three festive puzzles we'll be setting you between now and Christmas Day! We'll have the answers after #Christmas. Check back later this week for the
Think you're a code-breaker? Try these GCHQ puzzles | ITV News
