Add Yahoo as a preferred source to see more of our stories on Google. The card was created by both school children and spies (GCHQ) GCHQ, the UK’s intelligence agency, released its annual Christmas ...

Thousands worldwide, from San Francisco to Slovenia, are counting down to Christmas with a puzzle-a-day programming challenge called Advent of Code. By midnight on December 1, 2015, when Eric Wastl ...

You know what they say: a coding puzzle-a-day keeps the grey cells shouting ‘yay!’ Fortunately, this festive season sees the start of an advent calendar with a difference. The Advent of Code invites ...

LONDON (AP) — What does a spy agency give for Christmas? How about a riddle wrapped in an enigma inside a mystery. GCHQ, Britain’s electronic and cyber-intelligence agency, on Wednesday published its ...

If you fancy yourself as a budding sleuth, hacker or code-breaker, GCHQ has released its annual Christmas challenge and is encouraging people to try and crack the puzzle. Featuring designs from ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. LONDON (AP) — What does a spy agency give ...