The GCHQ card includes a photo of the agency's wartime home Bletchley Park GCHQ has unveiled its hardest ever Christmas puzzle, which needs a “mix of minds” to solve. The intelligence and cyber agency ...

Fans of codebreaking, maths and brainteasers can now try their hand at the latest cryptic Christmas challenge set by GCHQ, the UK's intelligence agency. GCHQ released its annual Christmas card on ...

What do gift tags, candy canes and several layers of hardened code have in common? They are all elements of an annual brainteaser for UK school children set by the nation's spy agency. Ensuring sharp ...

London (CNN) — What do secret codes and kids have to do with Christmas? GCHQ, the UK’s largest intelligence agency, has sent out its annual Christmas card, complete with a set of puzzles aimed at ...

GCHQ has revealed its annual Christmas puzzle, which this year contains hidden clues for those who want an extra challenge. The secretive UK spy agency, which focuses on communications intelligence ...

GCHQ has revealed its Christmas puzzle which includes cryptic clues and a ‘hidden’ message. The annual festive brainteaser is ...

Latin dancing, Indian butter and American soldiers are some of the clues for this year's cryptic Christmas challenge set by the national spy agency. GCHQ's annual brainteaser comes in the form of a ...