Re(4): GCHQ Christmas card puzzle IP: 184.108.40.206 Posted on February 5, 2016 at 05:29:58 PM by SimonLong
I got to the final stage and solved Looter, Message, Wordsearch, Registration and Crossword. I got the first stage of Graph Theory but couldn't work out the other three, and I made a start on Algebraic.
The others were utterly baffling - I stared at Manifold Agreement for hours, assuming I had to find the two missing dice faces. Kudos to the people who got further than that; I'm not at all surprised that no-one solved it all, as some of those puzzles were perverse in the extreme... Replies: