Any ideas how to work out this puzzle? It's for a scavenger hunt so the solution should bring up coordinates...
Full description is:
"It often occurs to me that I must have somewhat of an obsessive personality.
With frequency, I find myself thinking about puzzles even when I am at work.
I subtracted an hour or two from my timesheet just yesterday as I found myself thinking up this puzzle when I should have been working.
Hopefully you will enjoy it. All the information you need is on this page.
HOOEEMAIOMOEOOSDHNAIEOCOSIOIEMILONSIILRE
LADHIESINNIEESNNOHFNNAIERHLARSCOIIRIAAON
IOONOHDSOHDIANMNNAHAESSSSENPAAHNOEEOOHSH
HHIDEOSOREFEORIHEILISAEROIANAMPEENSASAPE
REMAOONILSRHASIEMHENIRISSOEEGNNNENEIH"
Logic Puzzle  Scavenger Hunt
Moderators: jestingrabbit, Moderators General, Prelates
Re: Logic Puzzle  Scavenger Hunt
I think the obvious first step is to calculate the frequency distribution; that is, figure out how many times each letter occurs. Once you have those numbers (in order from greatest to fewest), something about subtraction? I'm too lazy to actually tabulate.
(∫p^{2})(∫q^{2}) ≥ (∫pq)^{2}
Thanks, skeptical scientist, for knowing symbols and giving them to me.
Thanks, skeptical scientist, for knowing symbols and giving them to me.
 Mauthe Dhoo
 Posts: 42
 Joined: Fri Oct 22, 2010 4:53 am UTC
Re: Logic Puzzle  Scavenger Hunt
Google helps us take the first step by supplying to us this tool.
Which gives us:
A 19
B 0
C 2
D 5
E 29
F 2
G 1
H 17
I 26
J 0
K 0
L 6
M 7
N 23
O 27
P 3
Q 0
R 10
S 20
T 0
U 0
V 0
W 0
X 0
Y 0
Z 0
Which gives us:
A 19
B 0
C 2
D 5
E 29
F 2
G 1
H 17
I 26
J 0
K 0
L 6
M 7
N 23
O 27
P 3
Q 0
R 10
S 20
T 0
U 0
V 0
W 0
X 0
Y 0
Z 0
Re: Logic Puzzle  Scavenger Hunt
The letters that are present appear to be fairly close to the normal frequencies for English. But there aren't enough different letters. The notable omissions, in decreasing order of their usual frequencies, are the letters "T", "U", "W", "Y", "B", "V", "K". Also absent are "J", "X", "Q" & "Z", but those are infrequent enough in English for that to not be surprising.
I've tried adding the missing letters back in, but I can't make it work. I think the digraph frequencies are also about right, but the top three trigraphs that don't have a "T" ("AND", "ING", and "ION") are all not present. I would have expected at least one of them.
So maybe a transposition cipher, with some letters omitted?
EDIT: The top 4 missing letters are all at the end of the alphabet. It's possible that all of "T" through to "Z" have been removed, and the missing "B" and "K" is just happenstance  an artifact of the chosen plaintext.
I've tried adding the missing letters back in, but I can't make it work. I think the digraph frequencies are also about right, but the top three trigraphs that don't have a "T" ("AND", "ING", and "ION") are all not present. I would have expected at least one of them.
So maybe a transposition cipher, with some letters omitted?
EDIT: The top 4 missing letters are all at the end of the alphabet. It's possible that all of "T" through to "Z" have been removed, and the missing "B" and "K" is just happenstance  an artifact of the chosen plaintext.

 Posts: 4
 Joined: Thu Jun 23, 2016 7:24 am UTC
Re: Logic Puzzle  Scavenger Hunt
Hadn't tried a transposition cypher  but no luck there...
I also noted the frequency distribution and thought it odd  Still no progress here so any additional ideas would be appreciated!
I also noted the frequency distribution and thought it odd  Still no progress here so any additional ideas would be appreciated!
Re: Logic Puzzle  Scavenger Hunt
I just want to say that you haven't yet subtracted anything.

 Posts: 4
 Joined: Thu Jun 23, 2016 7:24 am UTC
Re: Logic Puzzle  Scavenger Hunt
Markus  I've been reading your post over and over and subtracting all sorts of things but getting no where... Could you give me a bigger push in the right direction?

 Posts: 4
 Joined: Thu Jun 23, 2016 7:24 am UTC
Re: Logic Puzzle  Scavenger Hunt
There has been an extra hint given for the puzzle:
"Everything you need is in the description. But, equally, you need everything in the description"
Hopefully this helps one of you, because it's no help to me!!
"Everything you need is in the description. But, equally, you need everything in the description"
Hopefully this helps one of you, because it's no help to me!!

 Posts: 6
 Joined: Sun Jul 12, 2015 5:54 pm UTC
Re: Logic Puzzle  Scavenger Hunt
Well, that hint restates what Markus said. You have looked the frequency with which each letter occurs  two of the clues used. But the hint makes it clear that you need all three  you need to subtract. What you need to subtract, however, I have no idea.
Re: Logic Puzzle  Scavenger Hunt
Sorry, but I don't have any more insight  I just noticed that you had stopped at using only two of the clues.
Some more questions that may help your guessing:
* What do you expect as a result?
e.g. 5 places/coordinates, one per line, all in the same vicinity
** and how many digits per coordinate?
* Just to be sure: Have you stated the riddle correctly?
You have 4 lines of 40 chars, but only 38 chars in the last line (and the odd " at the end)
My first guess would have been pairwise subtraction (HO, OE, EM...) to get digits, but that produces negative "digits".
Some more questions that may help your guessing:
* What do you expect as a result?
e.g. 5 places/coordinates, one per line, all in the same vicinity
** and how many digits per coordinate?
* Just to be sure: Have you stated the riddle correctly?
You have 4 lines of 40 chars, but only 38 chars in the last line (and the odd " at the end)
My first guess would have been pairwise subtraction (HO, OE, EM...) to get digits, but that produces negative "digits".
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