GCHQ’s Christmas puzzle contains hidden clues as an extra challenge for sleuths for the first time. The intelligence security ...

GCHQ has run its Christmas puzzle challenge for nearly a decade, but the latest card from the agency - which has multiple ...

The annual puzzle challenges the public to decode the names of UK landmarks using everything from lateral thinking to ...

GCHQ has released it's 2024 Christmas challenge which features a series of seven puzzles - see where to download it and what to expect.