The UK's intelligence, security and cyber agency creates a Christmas Challenge puzzle every year and this year marks a decade ...

You’ve no doubt seen some version of this viral math problem making the rounds on Facebook, Reddit or X (though we’ve given ...

GCHQ has released their annual Christmas puzzle for 2025, even providing prospective codebreakers with some hints.

The puzzles are geared towards testing a range of skills that the UK's intelligence agency uses every day to keep the country ...

GCHQ’s chief puzzler, known only as Colin, added: “This year’s Christmas challenge features seven puzzles designed to test ...

Fans of codebreaking, maths and brainteasers can now try their hand at the latest cryptic Christmas challenge set by GCHQ, ...

GCHQ has launched its annual Christmas challenge, featuring a new set of seven brainteasers and Christmas card designs by schoolchildren. This year's challenge marks a decade of GCHQ's festive puzzles ...

M&S shoppers have been left baffled by a Christmas decoration that they saw when out shopping, wondering whether it had been ...

The GCHQ Christmas puzzle is here! Every year, the UK's national intelligence agency releases a special Christmas card, full to the brim with puzzles. This year, three very special cards were produced ...

THERE are plenty of ways to get your mind working this festive period, but this bustling Christmas market brainteaser is a ...

GCHQ's Christmas puzzle is nearly here but when will it be unveiled? Here's what we know so far about the upcoming quiz.