unforum

[BBuck]

Interesting stuff. Great spot, kian.

One way that Seven can be used is to create the starting pack order by the series (1 + 7n) mod 54, which creates:

1, 8, 15, 22, 29, 36, 43, 50, 3, 10, 17, 24, 31, 38, 45, 52,
5, 12, 19, 26, 33, 40, 47, 54, 7, 14, 21, 28, 35, 42, 49,
2, 9, 16, 23, 30, 37, 44, 51, 4, 11, 18, 25, 32, 39, 46, 53,
6, 13, 20, 27, 34, 41, 48

Unfortunately, the resulting keystream doesn't decipher the 108 letters to anything sensible.

[arnezami]

I'm thinking we sorta have to remove the "evens" (or keep them) and use the other letters/odds as keyphrase. Alternatively (and this would be very exciting) we have to use the evens as ciphertext and can decode the answer for this card but we can use the odds for decoding some secret message using the prime numbered cards. But in any case I believe every single letter on the card must be used (I don't believe anything has to be thrown away).

But anyway I think we just have to try all kinds of sorts of things.

I'm really starting to believe kian's find is nothing short of brilliant (except if he is working for MC of course ). I can honestly say I would never found that one. And I now believe we are on the right track.

Its just soo beautiful: 4 groups of 5, shuffled, last X must be removed and the outer letter should be lowered/made colder. The resulting text "SHUFFLED FOURTH PRIME" also makes sense (grammatically aswell as its meaning: really seems to be a hint on how to procede)

Great find!

I second the former questions: How on earth did you find it?

arnezami

[Hunting4Treasure]

[BBuck]

EODMXFXRUTHFHURGIFULP

also anagrams to

UHUFFLED FROM RIGHT UPX

or SHUFFLED FROM RIGHT UP

(using Kian's logic for U going to S, X as a null).

[Guin]

found this while figuring out how we might shuffle the deck using primes - made me laugh when it mentioned our other favouite card

http://www.maa.org/columns/colm/cardcolm200508.html

[kian]

[bertyb]

Seems like a lot has happened over the weekend.

Any ideas why

http://cif.rochester.edu/~la002k/solitaire.htm

is currently not working though?

[BBuck]

[arnezami]

This new link is from the updated Shuffled wiki:

http://www.perplexcitycardmanager.com/solitaire.html

[arnezami]

Just to be sure: has anybody tried to enter "SHUFFLED FOURTH PRIME" into the solve page yet? You never know. Or simply "7" or "seven" or "evens". Just maybe we don't need the solitaire cypher for the card solve but only need it in combination with the primary cards to decipher the message (not needed for this card solve).

[manleym]

[Sophiecat]

Can confirm that "shuffled fourth prime" and "fourth prime shuffled" aren't correct.

[brokasaphasia]

[Monkeynavigated]

I have been working on this card for about a month and following the discussion on this forum. I have tried many different approaches toward this card, some new and some old.

I have long thought that the disappearing text was the key to solving this card, and kian's brilliant observation only re-enforces that belief.

Taking kian's original anagram to be correct (although others are definitely possible) and re-arranging seven to get evens, I started focusing on ever other letter giving a cipher text of:

BMHFB XQWZL TPLHY TWLOY NYBOI UMXHU AXNHS AJFTM MOMBA PVWOM KPLL

Interesting things to note:

This leaves exactly 54 letters (as I am sure everybody else recognized)

Unlike the full 108 letters, the letter frequency of these 54 letters more closely resembles the standard distribution of English letters. So it could be a scrambled single substitution cipher.

If it is a single substitution cipher (although I will be the first to admit it is a long shot) then we would need a way to reconstruct the original order. This of course assumes that the 20 disappearing letters are not randomly scrambled but are systematically scrambled. The obvious way of systematically scrambling them would be through a series of out-shuffles and in-shuffles.

Even I am complete wrong about the single substitution cipher, it may be worth trying to find a sequence of in and out shuffles (or some other systematic scrambling) on the disappearing text that produces a meaningful anagram. This could then lead to an initial deck ordering or a way or rearranging the cipher text to produce non-gibberish results from a solitaire decryption.

[Ifurita]

I tried running a series of ROT tests on the string you posted above with no promising results. The most frequenly appearing letter is M in the above sequence:

ROT-1 to transform to O and you get 3 x Z and 3 x Y
ROT-8 to transform to U and you get a decent distribution
ROT-14 to transform to A and you get 5 x Z
ROT-18 to transform to E and you get 4 x Z
ROT-22 to transform to I and you get only 1 x E and 0 x A

ROT-7 however, yields the 2nd highest total number of vowels (16 out of 54), second only to ROT-19, which yields 17.

got me if this means anything. Just thought I'd toss out some thoughts. Here are the results of the ROT-7

ITOMI EXDGS AWSOF ADSVF UFIVP BTEOB HEUOZ HQMAT TVTIH WCDVT RWSS