Fwd: GCHQ Christmas Puzzle solution : How to solve the brainteaser
Martin Postranecky <m.postranecky-pJrKddK8Xz/[email protected]> Fri, 29 Jan 2016 23:02:08 +0000
| Newsgroups | gmane.science.cryptography.bletchley-park |
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| Message-ID | <[email protected]> |
Friday 11 Dec 2015 GCHQ Christmas Puzzle solution : How to solve the brainteaser ------------------------------------------------------------- - and the four further parts of the puzzle it unlocks WARNING: CONTAINS SPOILERS. A puzzle sent out by the director of GCHQ with his official Christmas card has got quizzers hooked. If you're struggling, let us help =09 - GCHQ puzzle The GCHQ Christmas puzzle has become an obsession for some By Gordon Rayner, Chief Reporter For some quiz lovers, the GCHQ Christmas puzzle is the best present they could have had. For others, it has taken them to a new level of frustrati= on. Released on Wednesday by the intelligence agency's director Robert Hannigan, the brain-teaser is the first of five stages, each of which must be solved in order to unlock the next. Ominously, each level is harder than the one before. Part 1 The first puzzle, included in Mr Hannigan's official Christmas cards, consists of a grid of 25 x 25 squares, each of which must be either black or white. A series of numbers beside each row and column indicate how many black squares there are in that line, and how many occur together. So "3 2 7" would mean that line has blocks of three, two and seven black squares, in that order, but without indicating where in the line they occur. Each block of black squares must have at least one white space between them. It's a little like sudoku without the numbers. The result, if you shade in the black squares carefully with a black felt tip pen, is a QR code that you can scan with your mobile phone to take you to the next part of the puzzle. The solution If you're stuck, however, or too impatient, we've filled it in for you. If you don't have a QR reader on your phone you can get to the second level by clicking this link. Part 2 The second stage is a series of multiple choice questions. You must answer them all correctly to progress to the third stage, though you can have as many tries as you like. If you get stuck on Part 2, you can get to part three by clicking on this link. Part 3 That will take you to a series of four questions. The answer to each is a single word that can be used to create a URL taking you to Part 4. Can't manage Part 3? Then you can go straight to Part 4 by clicking this link. Part 4 Part 4 consists of three questions, the answers to which can be combined to make an IP address. Part 5 Part 5 is devilishly difficult. It includes pictorial questions, a crossword, a wordsearch, graph theory, algebra and a cipher. You can get to it by clicking this link but after that you are on your own. GCHQ says it will award a small prize to the first name it pulls out of a hat when entries close on January 31. The agency said it does not expect entrants "to answer everything" in Part 5 but will draw the winner from the top-scoring entries. Participants are asked to make a donation to the NSPCC as a goodwill gesture for taking part. http://www.telegraph.co.uk/news/uknews/12045768/Stuck-on-the-GCHQ-puzzle-= Let-us-help.html http://www.telegraph.co.uk/news/uknews/12041894/GCHQ-Christmas-card-quest= ion-Do-you-know-the-puzzle-answer.html http://i.telegraph.co.uk/multimedia/archive/03522/Capture_3522149b.jpg http://s.telegraph.co.uk/graphics/MobileSwitcher/v2/images/2532-144983571= 31464454944.svg http://s3-eu-west-1.amazonaws.com/puzzleinabucket/bb1f263f70e45b3d.html http://www.cub-zone-often.org.uk/layered/ http://www.gchq.gov.uk/58aa7ef96f3051b0/Pages/index.aspx http://www.gchq.gov.uk/puzz/Pages/index.aspx ----------- Thursday 28 Jan 2016 GCHQ Christmas quiz : 30,000 entries, not one perfect answer ------------------------------------------------------------ As deadline approaches for amateur code-breakers to submit their answers to the GCHQ Christmas quiz, can you solve the puzzles that have stumped the world ? By Gordon Rayner, Chief Reporter It cannot be solved using the internet. Specially-written algorithms have failed to crack it. Even geeks pooling their considerable resources in online chat rooms have fallen short. More than a month after the director of GCHQ set a fiendishly difficult =93fun=94 Christmas quiz, not one person out of the 600,000 who began the quiz has so far managed to get all the answers right..... http://www.telegraph.co.uk/news/uknews/12125576/GCHQ-Christmas-quiz-30000= -entries-not-one-perfect-answer.html http://i.telegraph.co.uk/multimedia/archive/03560/gchq_3560709b.jpg http://i.telegraph.co.uk/multimedia/archive/03560/Robert_Hannigan_3560632= b.jpg http://www.telegraph.co.uk/news/uknews/12041894/GCHQ-Christmas-card-quest= ion-Do-you-know-the-puzzle-answer.html http://www.telegraph.co.uk/news/uknews/12045768/Stuck-on-the-GCHQ-puzzle-= Let-us-help.html ---------- Thursday 28 Jan 2016 This is the kind of brain we look for at GCHQ --------------------------------------------- Could you be a spy ? Only if you have strong morals as well as a big brai= n http://www.telegraph.co.uk/news/uknews/defence/12128235/This-is-the-kind-= of-brain-we-look-for-at-GCHQ.html http://www.dailymail.co.uk/sciencetech/article-3421294/Is-hardest-puzzle-= world-30-000-people-submitted-entries-GCHQ-s-Christmas-teaser-no-correct-= answers-three-days-solve-it.html