If you love testing your mind, then it’s the perfect time of year - the annual GCHQ Christmas quiz and the answers have been ...

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

The spy agency's "Chief Puzzler" said the notoriously tricky puzzles are designed to test "the same blend of skills our teams ...

If you fancy yourself as a budding sleuth, hacker or code-breaker, GCHQ has released its annual Christmas challenge and is ...

Who doesn't love a good visual puzzle? For years we've been publishing Spot the Difference puzzles in our print magazine. To play, you simply study the photo on the left, then compare it to the same ...

Did you know solving puzzles can lead to long-term brain health benefits? These puzzles are potent at targeting the areas of your brain that are activated when you are scanning for colours, shapes, ...

Seven brainteasers feature in intelligence agency’s 2025 Christmas card, with covers designed by UK school pupils A warning from the spies at GCHQ: a robber is on the loose, intent on stealing ...