Fans of codebreaking, maths and brainteasers can now try their hand at the latest cryptic Christmas challenge set by GCHQ, ...
If you fancy yourself as a budding sleuth, hacker or code-breaker, GCHQ has released its annual Christmas challenge and is ...
The UK's intelligence, security and cyber agency creates a Christmas Challenge puzzle every year and this year marks a decade ...
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The GCHQ Christmas Puzzle has been revealed for 2025 – here are some hints to help you solve it
GCHQ has released their annual Christmas puzzle for 2025, even providing prospective codebreakers with some hints.
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