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| by Mariia |
These are always fun!
GCHQ releases annual Christmas Challenge 2025 with puzzles designed by schoolchildren and spies.
We are the UK's intelligence, security and cyber agency. Our mission is to help keep the country safe.
GCHQ https://www.gchq.gov.uk/news/gchq-christmas-challenge-2025
Christmas Challenge 2025 https://www.gchq.gov.uk/files/gchq%20christmas%20challenge%202025.pdf
hints: https://www.gchq.gov.uk/files/hints%20sheet%202025.pdf
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