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Puzzle In xkcd Book Finally Cracked

An anonymous reader writes "After a little over five months of pondering, xkcd fans have cracked a puzzle hidden inside Randall Munroe's recent book xkcd: volume 0. Here is the start of the thread on the xkcd forums; and here is the post revealing the final message (a latitude and longitude plus a date and time)."

20 of 90 comments (clear)

  1. On Topic by Anonymous Coward · · Score: 3, Funny
    1. Re:On Topic by ipquickly · · Score: 2, Insightful

      That website has been known to be wrong on a regular basis.

      (or someone fount /usr/bin/yes)

  2. Uh by Threni · · Score: 4, Insightful

    The start of the thread, containing spoilers, isn't much use if you want to attempt the puzzle and haven't got the book. Do I need the book? If so, this is something of a non-story, isn't it?

    1. Re:Uh by Anonymous Coward · · Score: 2, Informative

      I think you may need to brush up on the definition of "nerd". (Hint: It doesn't mean "people who like the same stuff as me")

    2. Re:Uh by war4peace · · Score: 4, Insightful

      Wait, there is a puzzle? Where? xkcd? What's that? Who? What year is it?
      Oh, it's /. - nevermind then, all makes sense now.

      --
      ...gis sdrawkcab (usually not responding to ACs; don't bother posting as AC)
    3. Re:Uh by IorDMUX · · Score: 3, Informative

      Do I need the book? If so, this is something of a non-story, isn't it?

      No, because of the real-world relevance of the result.

      I can't wait.

      --
      >> Standing on head makes smile of frown, but rest of face also upside down.
    4. Re:Uh by kestasjk · · Score: 4, Informative

      These are comics with computer science / math / physics jokes..

      --
      // MD_Update(&m,buf,j);
    5. Re:Uh by j00r0m4nc3r · · Score: 5, Funny

      So, this is obviously an invitation to another party.

      Or a trap.

    6. Re:Uh by Zarf · · Score: 4, Funny

      So, this is obviously an invitation to another party.

      Or a trap.

      You've been listening to Admiral Ackbar too much.

      --
      [signature]
    7. Re:Uh by dotancohen · · Score: 4, Informative

      You mean this:
      http://xkcd.com/240/

      --
      It is dangerous to be right when the government is wrong.
  3. Bring in the mice! by Errol+backfiring · · Score: 4, Funny

    So we now need to build a computer to know what the actual question was...

    --
    Nae king! Nae laird! Nae yurrupiean pressedent! We willna be fooled again!
    1. Re:Bring in the mice! by RuBLed · · Score: 2, Funny

      I almost got it guys, 5 more minutes...

  4. The problem is that there's no article. by Jesus_666 · · Score: 3, Insightful

    The gripe is not that it's a story about a solved problem, the gripe is about the story being about a solved problem inside a dead-tree version of xkcd - and we can't even be certain we were told the actual problem so the informational content of this story boils down to: "Randall Munroe has apparently put some tricky puzzles into an xkcd book of his and someone solved a really hard one and got a set of coordinates. You'll have to trust us on this one, we don't have further data." As far as news go that's really weak.

    There's no link to details about how the answer was found and we can only guess at what the problem was (apparently Randall gave some cyphertext and an initialization vector, leaving the reader to figure out which algorithm was used and how to decrypt the string). There's no actual article and the matter isn't urgent/all-important enough to warrant turning a set of posts incompehensible to those without the book into a news story.

    Had someone written a nice blog post that explains the problem, how the solution was determined and what the answer means this would have been much more newsworthy. As it is now it's only of use to the subset of /. readers who own the xkcd books - and those who do and are interested in the puzzles are most likely already reading the xkcd forum, making this story mostly pointless.

    In short: This story would be a lot more interesting if it was comprehensible without the book. As it is now it might as well be a stealth ad for the book. "Buy now and you too can have the faintest clue what kdawson is so excited about."

    --
    USE HOT GRITS WITH STATUE OF NATALIE PORTMAN (NAKED AND PETRIFIED)
    1. Re:The problem is that there's no article. by Angostura · · Score: 5, Interesting

      Indeed. Having read the thread, I suspect I've just witnessed a mathematical game of Mornington Crescent.

    2. Re:The problem is that there's no article. by geekoid · · Score: 3, Insightful

      What a whiner.

      XKCD is a popular nerd site. The owner of the sight did an interesting puzzle. Here is a link to the relevant information.

      Slashdot has done that sort of thing for it's entire existence. It's like getting on an aircraft and complaining that they fly through the air.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
  5. Prediction: by Anonymous Coward · · Score: 2, Insightful

    Prediction:

    XKCD used all profits to rent out a C-130 Herc to drop a metric ton of Ball-Pit Balls on that location.

  6. Google maps link by shird · · Score: 4, Interesting

    FYI, a google maps link to the location:

    http://maps.google.com.au/maps?f=q&source=s_q&hl=en&geocode=&q=37.769573+-122.483123&ie=UTF8&t=h&z=16

    time and date: 2010-06-26 14:28:57

    --
    I.O.U One Sig.
    1. Re:Google maps link by Farmer+Tim · · Score: 4, Funny

      What are the laws surrounding drinking alcohol in the Golden Gate Park?

      BYO.

      --
      Blank until /. makes another boneheaded UI decision.
  7. LOST spoiler by Tei · · Score: 2, Funny

    I think you have spoiled me the end of LOST, thanks :-P

    --

    -Woof woof woof!

  8. Solving the XKCD puzzle... by AdamTrace · · Score: 4, Interesting

    As I suggested in the linked XKCD forum, now that the puzzle is solved, it would be really nice to have a full write-up of the entire thing, including the unsolved puzzles themselves and a little more detail and background about the whole thing. That would have made for a much more interesting story to the general public.

    Direct linking to an unorganized web-forum thread isn't really much of a story. Oh well.

    For what it's worth, the puzzles in the XKCD book were really fun. They ranged from pretty simple (ROT-13, etc) to fiendishly clever. Even though every comic is available online for free, I'm glad I spent the money on the book.

    I was lucky enough to solve the final puzzle myself, and therefore happened to be the first person to have all eight keys and decrypt the message. As lame as this might sound, it was pretty thrilling.