You're a true detective if you can solve UK spy agency's tricky Christmas brain teaser
If you always dreamt of being a spy, now is your chance to show off your detective skills. UK’s national security agency has ...
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GCHQ releases a brain-teasing Christmas challenge — can you solve the spy-grade puzzle?
“Puzzles have always been at the heart of GCHQ, and the skills needed to solve them are just as relevant in 2024 as they were ...