GCHQ Christmas Card 2021
Added 2021-12-15 13:59:29 +0000 UTCHi Patreons,
Every year GCHQ release a challenge for the public. This year it's aimed at 11-18-year-olds in the UK. You can look up the original challenge here: https://www.gchq.gov.uk/news/christmas-card-2021 or watch Mark take us through the solutions!
Here is the video:
