Gchq Christmas Challenge 2024 Answering Service. Mark solves it live here for you. The spy chief's christmas card includes seven puzzles, each referencing gchq's sites across the country, including manchester, london, scarborough, bude and cheltenham.

This year’s puzzle aimed at budding young super sleuths has some fiendish extra. The spy chief’s christmas card includes seven puzzles, each referencing gchq’s sites across the country, including manchester, london, scarborough, bude and cheltenham.