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 Forum index » Diversions » Perplex City Puzzle Cards » PXC: Silver Puzzle Cards
[PUZZLE] #251 - Silver - The Thirteenth Labour - READ POST#1
Moderators: AnthraX101, bagsbee, BrianEnigma, cassandra, Giskard, lhall, Mikeyj, myf, poozle, RobMagus, xnbomb
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chimera245
Decorated

Joined: 09 Mar 2006
Posts: 209

Expanded keyspace

We had to expand the keyspace, which has been done for some time now - but RL has prevented me from getting the updated Stats web services running.

All is tracking nicely, we are (as we speak) coming up on 7% of our way through the Phase 2 keyspace (1375170/20151121) and tracking at approximately 0.5% per day. That leaves (if we have to go all the way through the key space with only the number of users we have now) about 185 days to go - but we in actual fact increasing our users at the moment (albeit slowly) and we would be unlucky if we go to the last of this keyspace to find the answer.

PostPosted: Tue Nov 14, 2006 10:38 pm
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elPaulio
Greenhorn

Joined: 08 Aug 2006
Posts: 5

Hey all,

I'm looking for a bit of advice running the client at my work.

We have a proxy server that is invisible(well, at least that my IT depts excuse for not telling me what it's called) That is open on port 80.

Is there anyway I can set the client up to run using port 80 without knowing the proxies name?

Cheers

Paul

PostPosted: Thu Nov 16, 2006 8:44 am
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AtionSong
Unfettered


Joined: 29 Aug 2006
Posts: 352

Sorry, but I'm really lazy, and have not read through 65 pages of a post. I apologize for having a life.

But I'm not sure if anybody has considered this yet, but the first twelve labors have first words that only happen from a certain set: Slay (3), Capture(4), Clean (1), Steal (2), Obtain (2). In order:

Code:

1. Slay
2. Slay
3. Capture
4. Capture
5. Clean
6. Slay
7. Capture
8. Steal
9. Obtain
10. Obtain
11. Steal
12. Capture


Just some thoughts if this is meant to be a pattern:
(The following code is used in the analysis:
Slay=S
Capture=C
Clean=L
Steal=T
Obtain=O)

This may be meant to be interpreted to be symetrical.
SSCCLSCTOOTC
If this were to be symetrical, it would look something like this:
SSCCLSCTO|OTCSLCCSS
Thus, the thirteenth labor would be to "slay" something

PostPosted: Thu Nov 16, 2006 10:02 pm
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marky1124
Boot

Joined: 23 Dec 2005
Posts: 31

Hi AtionSong,

I like your thinking. As you say this thread is massive and it would take an enormous effort to read it entirely. That said over the months I have read every single post. (I've probably forgotten more than I remember by now Wink) however I can remember that there used to be a website that you could use to enter in guesses for the key, it would respond by telling you whether the decrypted text resolved into text or anything else interesting.

I've lost the link for that website. Does anyone else have it handy? Unfortunately my attempts to search the forum for it haven't worked.

Also you'll notice on the frontpage of http://www.13thlabour.tk that there are two threads mentioned there. They split based on discussion around this brute force approach to solving the card versus other ideas/approaches.

All the best,
Mark

PostPosted: Sun Nov 19, 2006 7:55 am
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bobonacus
Greenhorn

Joined: 22 Apr 2006
Posts: 4
Location: berkshire

down to 54 seconds a WU with the new client Very Happy Cool

PostPosted: Thu Nov 23, 2006 8:45 pm
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wonkothesane
Boot


Joined: 05 Nov 2006
Posts: 27
Location: Newcastle

translation

i translated the hex from english to greek and back a few times till i came up with this :

69 A9 AGGELJ'A C5 43 e'na FD 8F 0F 1D 35 8C 5C 44 A6 90 to 48.53.56 1B 76.46 C7 65.53 C8?? 67.51?? 73 A8 E9 36 0A 93.85.55 9A C9 84 AE V g VL. 18 F8 AV 4D B5 6D 45.07 K 17.23 A5 7C F1 E8?? FC DA 2B 6B 71.76.88 1F C0 D1 95.61 8D ANNOUNCEMENT AV I 52 I "! 9A 9B BA 37?????.80 FV 53.95 AE 72.85 B 43 1F 7C BF I "! 79 15.03 8D F2 5B 6D A0 A1 YOU POSSESS DB BB CC 43.98.90 E4 B0 2B B7 81.59 E0 D2 39.35 A3 27 3B C3 2F 3B 3B 0B 01 D8 17 D7 1D D5 F7 A5 C8 C9 1D A2 22 e CURRENT g g AF 40.41.85 BD BD AV g E2 A9 g 52 D1 CB 2B 83 BF FROM "20.11.70.71 AA 22 I"! D8

make of it what you will.

PostPosted: Thu Nov 30, 2006 6:04 pm
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Mindez
Decorated

Joined: 26 Feb 2006
Posts: 165

Quote:
I know it is a stupid question, but I have not yet understood: what are we looking for?
Or better, what is the client looking for?
I looked on the page of distributed.net, and if I have understood right, the already knew the beginning of the answer.
As for 13thlabour, how is the software able to understand when someone finds the right key?
Please, use plain words! Very Happy
Thank you


gvnn


It's looking for *readable* characters. If it gets back something like "Ôq®)56{z↓üÛ♫" or something silly then it's not right.

The client's looking, I believe, for some message that is made up entirely of alphanumeric (a-z, A-Z, 0-9) characters.

To do this, it has to try "keys" (Strings of 8 letters) to decode it. There are, though, a LOT of different combinations of 8 letters. The client is going through them all, to try and get out a readable message.

Distributed.net knew the first part of their message, we don't (Which makes our job much harder.)

(I'm not sure, but that's my understanding.)
_________________
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PostPosted: Tue Dec 05, 2006 6:30 pm
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marky1124
Boot

Joined: 23 Dec 2005
Posts: 31

I think you are basically right Mindez except I think the client is looking to see that all the characters are printable, something like from Ascii 32 = space through to Ascii 126/127 = ~/DEL.

Cheers,
Mark

PostPosted: Wed Dec 06, 2006 1:02 pm
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gvnn
Guest


marky1124 wrote:
something like from Ascii 32 = space through to Ascii 126/127 = ~/DEL.


Oh yeah, NOW is all sooo much more clear!

Just kidding, thank you for every single answer! Very Happy

gvnn


PS: The client keeps running... who knows?

PostPosted: Wed Dec 06, 2006 7:29 pm
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JoePaycheck
Guest


kerberos
newbie guesses

Hey all, brand new to perplexcity.....I was just looking over the thirteenth labour and while someone has probably suggested this already (I haven't read all the posts yet) has anyone talked to anyone at MIT about there Kerberos coding? I know that Kerberos(cerebus) was the 12th labour.....but who knows? I know that the MIT Kerberos program is for network security, but it might have some application? I don't know that much about coding, I always look for a more abstract solution to puzzles. Thanks everyone!

PostPosted: Sat Dec 09, 2006 2:44 pm
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JoePaycheck
Guest


One more item
"Cube" related thirteenth labout of Hercules

Could be nothing, could be something.....

http://ce.et.tudelft.nl/~knop/puzzlegallery/Hercules/index.html

PostPosted: Sat Dec 09, 2006 2:48 pm
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volvox
Veteran


Joined: 24 Aug 2006
Posts: 86
Location: Candy Mountain

Whoo hoo!

Hit 300,000 units over the weekend Very Happy Do I get a cookie?

I know I have four computers running pretty much 24 hours a day, but it doesn't seem like I should have completed that many units. The stats did get reset when the second keyspace started, didn't it?

PostPosted: Mon Jan 08, 2007 7:33 pm
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Furry Mark
Boot


Joined: 06 Jul 2006
Posts: 30
Location: Cambridge, UK

Re: Whoo hoo!

volvox wrote:
Hit 300,000 units over the weekend Very Happy Do I get a cookie?

I know I have four computers running pretty much 24 hours a day, but it doesn't seem like I should have completed that many units. The stats did get reset when the second keyspace started, didn't it?


Although the total Processed units got reset to zero and are now counting through Phase 2, the individual stats didn't - they show your contributions to both Phases e.g. I'm currently showing a total just over 2.1 million for my email address, but around 900k of that is from Phase 1.

It has taken about 2 months to get through 1/3rd of Phase 2, so I'm hoping we will have a solution before my birthday in May Cool

(that is unless we still aren't searching a big enough keyspace... Rolling Eyes )

PostPosted: Mon Jan 08, 2007 9:32 pm
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Manveru
Guest


Hi,
I just found this project some days ago and decided to spend some CPU time here.
I'm used to other distributed computing projects (mostly through BOINC (Rosetta (finding proteins), Seti, etc): http://boinc.berkeley.edu/).
In comparison to the other projects I missed 2 things:

1: Labour13 runs with normal priority
2: Labour13 uses only 1 CPU core.

Many people own a dual core system today and they like it when they don't have to bother the always-running-process in the background (on low priority you can just let it on every time).

My solution:
1)
I wrote the following batch file; Labout13.bat:
Code:
start /min /low Labour13.exe


Now the program is started minimized and with low priority.

2)
I couldn't figure out another way than to run a second copy from a SECOND FOLDER and create a second account for me (in order not to disrupt or interfere with the other instance).
In the second folder I created the same batch file.

Current situation: Folder 1 called 13labour containing one copy of the program and the batch file. Folder 2 called 13labour2 containing a FRESH COPY of the program and the batch file.

OK, in the folder ABOVE these 2 I create another batch file containing:
Code:
start /D 13labour Labour13.bat
start /D 13labour2 Labour13.bat


Now you can create a shortcut (Ctrl+Shift & drag this file) to this batch or send it to your desktop and "enjoy" full CPU load without affecting your work.

Perhaps I just didn't see these features, but if they aren't implemented I guess this is a comfortable way to go.

PS: Why didn't he just call the executables directly in the second batch you may ask. Well, I planned this first and it looked like this:
Code:
start /min /low /D 13labour Labour13.exe
start /min /low /D 13labour2 Labour13.exe


But the command line just ignores the /low parameter in this constellation. If you know why, please post it.

Greets
Manveru

PostPosted: Tue Jan 09, 2007 5:40 pm
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Manveru
Guest


And yes, there is a typo.
"I wrote the following batch file; Labour13.bat:"

PostPosted: Tue Jan 09, 2007 6:56 pm
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