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GCHQ Puzzle Challenge

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Viewing 15 posts - 1 through 15 (of 194 total)
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  • 7th April 2020 at 2:00 pm #47129
    Harry
    Keymaster

    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

    7th April 2020 at 4:24 pm #47159
    10degrees-admin
    Keymaster

    16:23, 7 minutes.

    7th April 2020 at 4:58 pm #47166
    10degrees-admin
    Keymaster

    I don’t know where to find the challenge.

    7th April 2020 at 5:00 pm #47168
    Harry
    Keymaster

    It would have helped if I had added the link to the post! Fixed now.

    Harry

    7th April 2020 at 5:04 pm #47169
    10degrees-admin
    Keymaster

    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!]

    7th April 2020 at 5:12 pm #47172
    10degrees-admin
    Keymaster

    5 minutes 30 seconds, ms paint is very useful for doing it on along with a piece of paper

    7th April 2020 at 5:36 pm #47175
    10degrees-admin
    Keymaster

    22 shameful minutes and 24 seconds

    7th April 2020 at 5:37 pm #47177
    Harry
    Keymaster

    No puzzle-shaming allowed on these forums!

    Harry

    7th April 2020 at 6:50 pm #47183
    10degrees-admin
    Keymaster

    Although using brute force i solved it under 10 minutes

    7th April 2020 at 6:51 pm #47186
    Harry
    Keymaster

    Admirable honesty. Might be worth thinking about how it can be done without BF.

    7th April 2020 at 10:25 pm #47191
    10degrees-admin
    Keymaster

    12:28

    7th April 2020 at 10:29 pm #47192
    Inactive

    15 minutes – would have been 12 but that last leftmost C cost me 3 minutes! Any one else find that?

    8th April 2020 at 2:43 pm #47240
    10degrees-admin
    Keymaster

    There is a way to do it without brute force – use logic! (It would help if you were good at Minesweeper…)

    8th April 2020 at 4:24 pm #47239
    10degrees-admin
    Keymaster

    9 minutes, 29.83 seconds

    8th April 2020 at 4:24 pm #47267
    10degrees-admin
    Keymaster

    8 minutes 18 seconds, minesweeper experience definitely came in handy.

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