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 Forum index » Diversions » Perplex City Puzzle Cards » PXC: Silver Puzzle Cards
[Puzzle] #243 Silver - Shuffled Part 2 (Read 1st Post!)
Moderators: AnthraX101, bagsbee, BrianEnigma, cassandra, Giskard, lhall, Mikeyj, myf, poozle, RobMagus, xnbomb
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Juxta
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Joined: 28 Aug 2005
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Shadowcaster - I seriously doubt that (as your post title says) "You know something we don't know". I believe that the phrase is "Put up, or shut up". Last time I checked, nobody had entered a correct solve.

Joe the OOF - the source code won't reveal anything, the Mind Candy techs aren't going to expose anything to the outside world which will give us a clue to what should go into a solve box - someone decidedly more web-techy than I can tell you exactly why. Even if they *had* it would just be wrong.

J
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PostPosted: Thu Apr 13, 2006 11:53 am
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Anyone care to update for wave 3?

Living in the states, it's been rough trying to get cards delivered (Toy Tokyo is a 15 hour drive from me, and I've heard naught but horror stories of their delivery process). Anyone care to update any clues we may have now with Wave 3 and/or update the brute force cracker to v1_0_3 to include the new info we have from these?

Thanks!

PostPosted: Thu Apr 13, 2006 3:57 pm
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sackofpotatoes
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Joined: 07 Feb 2006
Posts: 86

I'm new to Shuffled so bear with me... I don't see this mentioned on the wiki, but I have not read the first 43 pages of discussion myself:

In the gray box on the top of the card (look around "#243") there are tiny playing card symbols in a regular grid, and they appear to be in a regular pattern (spades, hearts, clubs, diamonds).

If the starting deck card sequence were a regular pattern of suits, this would vastly reduce the number of possible deck configurations (though I haven't bothered to calculate just how many fewer).

I think this is consistent with the ""If entropy wins, outward looks should leave you cold" line: a highly disordered deck is not the solution.

PostPosted: Fri Apr 14, 2006 12:46 am
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Bendover
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Joined: 06 Mar 2006
Posts: 111
Location: San Jose

Could
Quote:
"If entropy wins,
outward looks should leave you cold"
be a mnemnomic for the deck order ? maybe the first letters pointing out a location where the order can be found I E W O L S L Y C

PostPosted: Fri Apr 14, 2006 12:52 am
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Boot

Joined: 05 Jan 2006
Posts: 43

Juxta wrote:
Shadowcaster - I seriously doubt that (as your post title says) "You know something we don't know". I believe that the phrase is "Put up, or shut up". Last time I checked, nobody had entered a correct solve.

Joe the OOF - the source code won't reveal anything, the Mind Candy techs aren't going to expose anything to the outside world which will give us a clue to what should go into a solve box - someone decidedly more web-techy than I can tell you exactly why. Even if they *had* it would just be wrong.

J


Take it easy Juxta! Shadowcaster is just saying that the password from the heat sensitive red card is for something to do with wave 3, and of no use to shuffled (besides, I've tried it and it is not a key phrase).

And Joe - The solve pages for PXC are all server side coded so you can't see the source code. Anyway, as Juxta says, that would just be wrong. I don't even like the idea of a brute force on this one, I just want to find the deck order via the clues.

PostPosted: Fri Apr 14, 2006 7:22 am
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Hunting4Treasure
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Joined: 06 Aug 2005
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Bendover wrote:
Could
Quote:
"If entropy wins,
outward looks should leave you cold"
be a mnemnomic for the deck order ? maybe the first letters pointing out a location where the order can be found I E W O L S L Y C

Ironically, those letters anagram to ICE SLOWLY. Laughing
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PostPosted: Fri Apr 14, 2006 7:50 am
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Asib
Boot

Joined: 26 Dec 2005
Posts: 28

sackofpotatoes wrote:
I'm new to Shuffled so bear with me... I don't see this mentioned on the wiki, but I have not read the first 43 pages of discussion myself:

In the gray box on the top of the card (look around "#243") there are tiny playing card symbols in a regular grid, and they appear to be in a regular pattern (spades, hearts, clubs, diamonds).

If the starting deck card sequence were a regular pattern of suits, this would vastly reduce the number of possible deck configurations (though I haven't bothered to calculate just how many fewer).

I think this is consistent with the ""If entropy wins, outward looks should leave you cold" line: a highly disordered deck is not the solution.


Wel done we have been all over this card and missed that must buy a magnifying glass Smile

PostPosted: Fri Apr 14, 2006 4:10 pm
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Bendover
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Joined: 06 Mar 2006
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Location: San Jose

I have been going over this card over and again and I keep coming back to the fact that every thing needed to solve it is on the card,or so we're told. On the solitaire site http://www.schneier.com/solitaire.html it is stated that (as I understand it) for every letter in the message there has to be a key stream letter generated. with the 108 charactors on the card (Discounting the fading letters) that leaves 54 keystream and 54 message letters. Has any one run the first 54 letters through a fresh non shuffled deck of Motor cards? and tried to decode as per the Solitaire site? I'm going to try it this week end if I can get my mind around the Solitaire manipulations.

PostPosted: Sat Apr 15, 2006 2:29 am
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UKver2.0
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Joined: 09 Feb 2006
Posts: 270

Asib wrote:
sackofpotatoes wrote:
I'm new to Shuffled so bear with me... I don't see this mentioned on the wiki, but I have not read the first 43 pages of discussion myself:

In the gray box on the top of the card (look around "#243") there are tiny playing card symbols in a regular grid, and they appear to be in a regular pattern (spades, hearts, clubs, diamonds).

If the starting deck card sequence were a regular pattern of suits, this would vastly reduce the number of possible deck configurations (though I haven't bothered to calculate just how many fewer).

I think this is consistent with the ""If entropy wins, outward looks should leave you cold" line: a highly disordered deck is not the solution.


Wel done we have been all over this card and missed that must buy a magnifying glass Smile


Oliver was the first to mention this I believe


But he was ignored... then he mentioned it again...


And people started looking at it closer.

As far as how helpful it is... the program that was posted here has the option for swapping suits and giving all outputs for the 24 resulting combinations.



Edit: Embedded long URLs. -SpaceBass

PostPosted: Sun Apr 16, 2006 2:04 pm
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sackofpotatoes
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Joined: 07 Feb 2006
Posts: 86

I didn't think I could be the first to notice those suits, UKver2.0. Thanks for finding and linking to the original posts.

Does anyone know of a Solitair program like the one linked to above for OS X (unix/linux would probably work -- or how to run that program in OS X)? My google fu is failing me, and I'd like to able to run multiple suit swaps at once.

PostPosted: Mon Apr 17, 2006 8:59 pm
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Sh1ft
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Joined: 12 Nov 2003
Posts: 110
Location: Salt Lake City, Utah

The perl version is well documented:

http://www.schneier.com/code/sol.pl

PostPosted: Mon Apr 17, 2006 9:57 pm
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thelayfields
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Joined: 30 Mar 2006
Posts: 20

over-arching puzzle

We have all agreed that there is a solitaire deck order coming in the prime numbered cards, but have no idea what it decodes. I've noticed some discrepencies in the titling of cards. If you look through the cards, almost all first letters are capitolized, but the rule isn't always followed.

119 Mind The Gap
114 Taking the Biscuit
074 WordSpy

What possibility is there that this is a code that will be cracked with the solitaire cipher on the prine number cards?

PostPosted: Wed Apr 19, 2006 11:28 am
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beglee
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Joined: 21 Oct 2005
Posts: 164

thelayfields wrote:
We have all agreed that there is a solitaire deck order coming in the prime numbered cards, but have no idea what it decodes.


No, we havent all agreed that. We have no idea what the card symbols on the prime numbered cards are for.
Yes, many have SPEC'd that it could be the order for the Shuffled deck, but its just that, speculation
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PostPosted: Wed Apr 19, 2006 11:53 am
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doublecross
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Joined: 25 Jul 2005
Posts: 588
Location: London, UK

For those of us that do think that the 54 prime numbered cards with playing card symbols on them correspond to a possible starting deck for Shuffled, by my calculations there are only eight prime numbered cards left unissued. There are also two that have been issued that don't have any card symbols - they could be the jokers or just have the symbols missing. If they are the jokers (in some order) then there are only 2*8!=80,640 combinations to test. If they aren't and there are effectively ten cards missing, then there are 10!=3,628,800 combinations to test.

I have long lost the ability to write programs quickly, so here is my data for someone else to use.

I am assuming that the ciphertext is
WBBMCHGFIBLXCQYWEZFLITHPJ
LFHWYETKWYLJOTYYNGYJBIOGI
FUVMRXIHGURAGXHNQHRSXAWJU
FJTAMSMMOSMVBAAKPGVVWXOVM
YKZPLLUL

The card pack (with * to denote missing cards) is currently:
47,7,33,6,13,21,40,11,51,*,*,
19,22,50,9,25,52,*,32,45,34,
10,14,8,18,44,4,24,35,12,*,17,
26,48,39,27,*,30,43,38,36,23,
*,3,29,2,1,*,15,*,*,*,49,37

And the missing cards are:
5,16,20,28,31,41,42,46,53,54

If you think that The Earth's Destiny and Ball Night are in fact the jokers, then these are the third-last and second-last *s in the second sequence, which will be 53 and 54 (or the other way round).

If you solve the card from this, please let me know!


Edit: Broke up long, forum-stretchy lines of ciphertext and card packs. -SpaceBass
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PostPosted: Wed Apr 19, 2006 1:59 pm
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BrianEnigmaModerator
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Joined: 05 Oct 2003
Posts: 1199
Location: Pacific Northwest

Brute Force Program

With the current Wave 3 playing card markings, it looks like we have ten "missing" cards. I updated my brute-force tool yesterday with the new deck information. Unlike the one in September that took a week or two to run, the current card orderings can be run through in under 2 hours on a 1.6 GHz PPC chip (and that's actually going through the card orderings twice--once with a keyphrase and once without.)

Because this is a text-based cipher and not a pure binary cipher (like RC5-64), it means that *everything* you get as output is text. 99.9999% of it is garbage and unreadable. In order to help filter the junk from the real possibilities, this cracker program will look for certain phrases and give them a score:

DJINN = 10 points
CREATE = 10 points
PERPLEX = 10 points
VIRUS = 1 point
WORM = 1 point

The more likely and more unique words have a higher weighting than the shorter words. You'd be surprised about how often the four letters WORM appear in sequence in random data (if my statistical math is correct, 4 specific 1:26 changes, giving 1:104?)

Instead of printing every possible result, it only prints the ones that have a score of 1 or higher, so at least one of the above terms needs to be mentioned.

Now, as far as keywords: you can start with an initial deck ordering, but with the Solitaire cipher, an optional keyword or key phrase can alter that initial order. To play it safe, the cracker attempts both no keyword and the key phrase IFENTROPYWINSOUTWARDLOOKSSHOULDLEAVEYOUCOLD.

Attached is a zip file. In it is solitaire.c, the source code, and output.txt, the output of a run. Each piece of output consists of three lines. The first is a bunch of asterisks, indicating relevance points. The second is the initial deck ordering for that result. The third is the actual "decoded" text. As you can see, it is all pretty much garbage. This could mean one or more things:

1) incorrect keyword/keyphrase
2) incorrect relevance serarch terms. I kind of doubt this, as any message of that output length is bound to have at least one of those words.
3) incorrect deck ordering. Perhaps it really should be an "untouched" deck, but in that case, is there a standard way new decks of cards are ordered?
4) incorrect input data. Going by the phrase "if entropy wins..." it would seem that entropy (which, in laymans terms, is equal to "cold") is bad, so heat is good, and heating the card causes letters to disappear. I based the ciphertext on the immutable letters in the center, but the other possibilities include the ciphertext being the whole thing or the ciphertext being just the disappearing ink letters.
5) bug in the program. I actually found one this morning related to decoding without a keyword (it wasn't resetting the deck, but using the leftover deck order from the previous computation), so I had to re-run the app with the appropriate bugfix. I'm pretty certain it is quite solid now, but I'm not so egotistical as to say my code is never buggy.

So that's where it stands now. I am pretty certain that we are correct on assuming the input ciphertext is the immutable text. Technically, the keyword/keyphrase could be anything, but I have a hunch that either there is no keyword or that it's entropy-related. I'd be curious to try some "untouched deck" orderings. I would assume the possibilities for this include: four suits in some order from A..K or 2..A or K..A or A..2, with the jokers either at the beginning, end, or sandwiching the deck.

Thoughts?
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PostPosted: Wed Apr 19, 2006 2:36 pm
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