MysteryTwister C3
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Level X Challenges (12)

Page 1 of the challenges in Level X, ordered by date posted (the most recent appear first).

Spanish Strip Cipher — Part 3

[sanguino-03] - 0 users already solved this challenge.
 
 
 

Many telegrams that date from the Spanish Civil War (1936 - 1939) still remain undisclosed. It is assumed that these telegrams were encrypted using the Spanish Strip Cipher. Try to find the plaintext of this original telegram.
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2014-03-27 14:45
Maximum number of attempts for this challenge: 15

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Concealed Messages — Vigenère's Night Sky

[schmeh-08] - 15 users already solved this challenge.
 
 
 

In 1586 the famous French mathematician Blaise de Vigenère published a picture of the night sky and claimed that a message was concealed in it. Can you find out how to decipher this message?
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2012-05-01 10:31
Maximum number of attempts for this challenge: 0

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Rank User (#15) Achieved points (Global score) y-m-d - h:m:s

Viktor (Veselovský) 2000 (113516) 2012-05-04 03:23:00
Armin Krauss (argh) 1807 (155637) 2012-05-05 18:20:00
J. M. (jomandi) 1613 (113270) 2012-05-13 13:00:00
E.T (Ertheb) 1199 (55106) 2012-10-12 22:20:00
#5 Bart den Hartog (Bart13) 1179 (118984) 2012-12-21 01:17:00
#6 Alain (Integral) 1132 (198642) 2014-03-05 08:52:42
#7 Michael Doucha (mdou) 1131 (13757) 2014-03-26 14:22:00
#8 Kurt Gebauer (Yokozuna) 1118 (121239) 2015-02-08 23:55:15
#9 Julia Bernotat (El Greco ) 1118 (81129) 2015-02-14 11:07:00
#10 HolgerK (HolgerK) 1117 (23952) 2015-02-17 12:22:01
#11 Joerg G. (SnifferMaster) 1110 (17225) 2015-11-15 11:52:00
#12 Szabó Zoltán (szabo.z87) 1109 (47990) 2015-12-29 10:00:51
#13 KW (qwer*) 1109 (13753) 2016-01-03 20:40:00
#14 Norbert Biermann (Norbert) 1105 (40024) 2016-07-15 12:39:00
The solution for this challenge was made public on 2016-07-15, and thus it is not possible to get points for this challenge any more. However, you can still solve and enter a solution for this challenge. If you believe you have the solution, you can still write us an email.
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The third ENIGMA M4 message

[hoerenberg-01] - 0 users already solved this challenge.
 
 
 

In 2006 the distributed "M4 Message Breaking Project" under the lead of Stefan Krah aimed at decrypting three ENIGMA M4 messages from the time of World War II. Two of the three messages where decrypted within the first weeks. However, the third message withstood despite all efforts and remained unbroken.

Today, the M4 project has been discontinued with the last message still unbroken. The task of this challenge is to break this very last message - after all, a few years have past since the project was discontinued and cryptanalysis and computational power also advanced during this time.

Note: The solution was published here: http://www.enigma.hoerenberg.com/. You can't get points for solving it any more, but you can still use it as a good training experience.
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2011-09-21 18:45
Maximum number of attempts for this challenge: 0

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Twelve-Year-Old Murder Case

[grunert-01] - 0 users already solved this challenge.
 
 
 

An unsolved FBI case: In 1999, an encrypted message was found in the pockets of a murder victim. No one was able to decrypt it so far.
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2011-04-07 00:00
Maximum number of attempts for this challenge: 0

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Ku Klux Klan

[schmeh-06] - 34 users already solved this challenge.
 
 
 

In 1923, a member of the Ku Klux Klan sent an encrypted telegram to one of his colleagues. This telegram could be preserved.

More than 60 years later, the US mathematician Cipher Deavours examined the telegram and was able to decipher it. In 1989, he published some of the details about the solution in the magazine Cryptologia („A Ku Klux Klan Cipher“, edition 3/1989). However, he didn‘t tell the complete solution – the last part was left to the reader as an exercise.
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-10-14 13:30
Maximum number of attempts for this challenge: 0

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Rank User (#34) Achieved points (Global score) y-m-d - h:m:s

Seth Kintigh (DarkFibre) 2000 (79471) 2011-06-14 08:39:00
Viktor (Veselovský) 1000 (113516) 2011-11-08 13:52:00
The Killer (Killer) 1000 (42393) 2011-11-13 15:30:00
J. M. (jomandi) 1000 (113270) 2011-11-13 19:02:00
#5 Bart den Hartog (Bart13) 1000 (118984) 2012-02-10 18:45:00
#6 Dusan (xxdradus) 1000 (40134) 2012-06-22 17:38:00
#7 j.h. (haegarq) 1000 (11696) 2012-06-30 17:29:00
#8 Armin Krauss (argh) 1000 (155637) 2012-08-28 00:35:00
#9 Hans Peter (hanspeter) 1000 (48115) 2013-01-11 12:45:00
#10 Snake (snk) 1000 (51939) 2013-02-02 20:57:00
#11 swarmspider (swarmspider) 1000 (4425) 2013-04-23 14:37:00
#12 Almut (problelmo) 1000 (45992) 2013-06-16 13:44:00
#13 george lasry (george4096) 1000 (281491) 2013-08-30 16:53:00
#14 Alain (Integral) 1000 (198642) 2013-12-29 14:50:00
#15 George (Theofanidis) 1050 (88988) 2014-01-21 03:05:00
#16 E.T (Ertheb) 1000 (55106) 2014-03-10 08:57:33
#17 Bertold (bk) 1000 (8972) 2014-05-10 22:58:00
#18 Hughes (hughes) 1000 (4534) 2014-07-24 20:23:31
#19 julius gaius (julius) 1000 (25581) 2014-08-06 14:45:17
#20 Bernhard Gruber (bgr) 1000 (22889) 2014-09-29 19:10:43
#21 Julia Bernotat (El Greco ) 1000 (81129) 2015-02-06 18:50:51
#22 Kurt Gebauer (Yokozuna) 1000 (121239) 2015-02-09 19:15:39
#23 Joerg G. (SnifferMaster) 1000 (17225) 2015-10-06 19:10:00
#24 Szabó Zoltán (szabo.z87) 1000 (47990) 2015-12-13 13:27:00
#25 S (Zyphe) 1000 (8457) 2016-01-12 21:24:00
#26 Dominik M. (Sgt. Pepper) 1000 (46526) 2016-01-12 21:24:00
#27 Em Doulgerakis (Greko) 1000 (110211) 2016-05-03 17:05:00
#28 Martin (martinbucher) 1000 (24117) 2016-05-15 15:40:02
#29 zahir mohsen moradi (ariobarzan) 1000 (99757) 2016-05-26 23:53:00
#30 Rainer Zufall (kiekuk) 1000 (42438) 2016-09-09 13:40:00
#31 Norbert Biermann (Norbert) 1000 (40024) 2016-09-10 23:08:41
#32 Andreas Frerichs (Ossili) 1000 (33266) 2016-09-20 20:00:00
#33 D3d4lu5 (D3d4lu5) 1000 (65954) 2017-09-04 13:09:24
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