Hint 1:

Solving this requires external resources.

Hint 2:

The fact that both the problem and the answer are expressed as numbers is largely a red herring.

  • $\begingroup$ This took the xkcd boards four days to solve; I wonder how this community will do? $\endgroup$ – histocrat Mar 26 '15 at 22:09
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    $\begingroup$ With our combined support, it'll be one day. Two days, tops! $\endgroup$ – Conor O'Brien Mar 26 '15 at 22:14
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    $\begingroup$ @histocrat Suggest to change the question a bit (thou I have no better idea), cuz I know the answer already without thinking.. $\endgroup$ – Alex Mar 26 '15 at 22:25
  • $\begingroup$ @JoeZ. I was trying to hint to histocrat what you're saying, without saying it =D $\endgroup$ – Alex Mar 26 '15 at 22:28
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    $\begingroup$ It's against the spirit of the rules, perhaps, but you can't actually tell if somebody did it or not. $\endgroup$ – Joe Z. Mar 26 '15 at 22:31

Thanks to reading a lot of books and hint #2, the answer is:


The clue is made up of

4 ISBN-10 numbers
0870678884 - How to Win
0689834098 - You Have to Write
1582403988 - Six
0670002291 - Times Three

Great puzzle!

| improve this answer | |
  • $\begingroup$ Oh wow ... yes, great puzzle! $\endgroup$ – Rand al'Thor Mar 27 '15 at 0:58
  • $\begingroup$ Make an oath that you did not google the answer, or your ding ding will shrink @JasonLepack $\endgroup$ – Alex Mar 27 '15 at 16:40
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    $\begingroup$ Ok... I did not Google the answer. Please do not shrink my ding ding. $\endgroup$ – LeppyR64 Mar 27 '15 at 17:00

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