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, ...

Word puzzles currently dominate the internet space with their old-world charm, and there's a good reason behind that. These simple yet addictive challenges use random letters arranged in a grid to ...