A special National Cipher Challenge for extraordinary times › Forums › Bureau of Security and Signals Intelligence Forum › GCHQ Puzzle Challenge
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Once you have solved the latest GCHQ puzzle challenge post your time here. (No cheating – honour code!) Once the next puzzle is published you can also discuss your solutions to previous ones, but not before! Have fun,
Harry and GCHQ_Puzzle_Master
16:23, 7 minutes.
I don’t know where to find the challenge.
It would have helped if I had added the link to the post! Fixed now.
Harry
Shall I email my full solution too, including the location of the mines?
[Edited by Harry: No need, we are applying the honour code here. If someone in BOSS says they solved it, we believe them! We won’t post solutions on the forum as we want to keep the puzzles interesting for everyone else!]
5 minutes 30 seconds, ms paint is very useful for doing it on along with a piece of paper
22 shameful minutes and 24 seconds
No puzzle-shaming allowed on these forums!
Harry
Although using brute force i solved it under 10 minutes
Admirable honesty. Might be worth thinking about how it can be done without BF.
12:28
15 minutes – would have been 12 but that last leftmost C cost me 3 minutes! Any one else find that?
There is a way to do it without brute force – use logic! (It would help if you were good at Minesweeper…)
9 minutes, 29.83 seconds
8 minutes 18 seconds, minesweeper experience definitely came in handy.
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