9
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What's the answer to this puzzle?


          3121725189161013227144198245112151202662321

          Key:(21271521191722) (..,.,.,..,..,..,..,..)
      
          Answer: _ _ _ _ _ _ _ _
                                      
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6
  • $\begingroup$ Are the dots in ..,.,.,..,..,..,..,.. supposed to be rot13(qvtvgf)? $\endgroup$
    – Someone
    Jun 17, 2023 at 22:20
  • $\begingroup$ @Someone They're more like directives. $\endgroup$ Jun 18, 2023 at 6:44
  • $\begingroup$ What do you mean by "directives"? $\endgroup$
    – Someone
    Jun 18, 2023 at 13:59
  • $\begingroup$ @Someone I just meant it tells you what to do $\endgroup$ Jun 18, 2023 at 14:49
  • 1
    $\begingroup$ @Someone That's up to you guys to figure out. $\endgroup$ Jun 18, 2023 at 15:41

1 Answer 1

9
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The answer is

ALPHABET

First thing we can do is to

map the Key to the dots: (21, 2, 7, 15, 21, 19, 17, 22)

At this point, we would consider that

each number is the position of a letter, but not in normal alphabet

Then looking at the first string, we find that

Each number between 1 and 26 are there, but not in correct order. The fun part is to separate digits

To do this, we use a bit of logic

For example there is ..144... in the string. 44 is not in 1..26, so we can isolate the second 4. Same for 266. We can isolate the second 6, then the 26 just before since 6 alone should appear one only

And finally we get the following table:

3 12 17 25 18 9 16 10 13 22 7 14 4 19 8 24 5 11 2 15 1 20 26 6 23 21

We can use this table for each number of the key, to get the number: 21th number is 1, which remaps to A in A1-Z26 coding

and so all until making the word ALPHABET

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2
  • $\begingroup$ Outstanding. I couldn't get past figuring out the key-to-dots bit. $\endgroup$ Jun 27, 2023 at 12:19
  • $\begingroup$ Correct, well done! $\endgroup$ Jun 27, 2023 at 20:14

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