MysteryTwister C3
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Level X Challenges (18)

Page 4 of the challenges in Level X, ordered by date posted (the most recent appear first).

Ku Klux Klan

[schmeh-06] - 36 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

All successful users of this challenge

Rank User (#36) Achieved points (Global score) y-m-d - h:m:s

Seth Kintigh (DarkFibre) 2000 (79471) 2011-06-14 08:39:00
Viktor (Veselovský) 1000 (155163) 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 (144081) 2012-02-10 18:45:00
#6 Dusan (xxdradus) 1000 (40236) 2012-06-22 17:38:00
#7 j.h. (haegarq) 1000 (15252) 2012-06-30 17:29:00
#8 Armin Krauss (argh) 1000 (188214) 2012-08-28 00:35:00
#9 Hans Peter (hanspeter) 1000 (52256) 2013-01-11 12:45:00
#10 Snake (snk) 1000 (83889) 2013-02-02 20:57:00
#11 swarmspider (swarmspider) 1000 (4528) 2013-04-23 14:37:00
#12 Almut (problelmo) 1000 (45992) 2013-06-16 13:44:00
#13 George Lasry (george4096) 1000 (302230) 2013-08-30 16:53:00
#14 George (Theofanidis) 1050 (112184) 2014-01-21 03:05:00
#15 E.T (Ertheb) 1000 (81809) 2014-03-10 08:57:33
#16 Bertold (bk) 1000 (9673) 2014-05-10 22:58:00
#17 Hughes (hughes) 1000 (7925) 2014-07-24 20:23:31
#18 julius gaius (julius) 1000 (25581) 2014-08-06 14:45:17
#19 Bernhard Gruber (bgr) 1000 (22889) 2014-09-29 19:10:43
#20 Julia Bernotat (El Greco ) 1000 (81129) 2015-02-06 18:50:51
#21 Kurt Gebauer (Yokozuna) 1000 (177433) 2015-02-09 19:15:39
#22 Joerg G. (SnifferMaster) 1000 (18154) 2015-10-06 19:10:00
#23 Szabó Zoltán (szabo.z87) 1000 (55604) 2015-12-13 13:27:00
#24 Dominik M. (Sgt. Pepper) 1000 (97919) 2016-01-12 21:24:00
#25 S (Zyphe) 1000 (10461) 2016-01-12 21:24:00
#26 Em Doulgerakis (Greko) 1000 (124033) 2016-05-03 17:05:00
#27 Martin (martinbucher) 1000 (27363) 2016-05-15 15:40:02
#28 zahir mohsen moradi (ariobarzan) 1000 (99757) 2016-05-26 23:53:00
#29 Rainer Zufall (kiekuk) 1000 (56786) 2016-09-09 13:40:00
#30 Norbert Biermann (Norbert) 1000 (45031) 2016-09-10 23:08:41
#31 Andreas Frerichs (Ossili) 1000 (33266) 2016-09-20 20:00:00
#32 D3d4lu5 (D3d4lu5) 1000 (297709) 2017-09-04 13:09:24
#33 Alain Collignon (vexilla72) 1000 (90800) 2018-08-13 14:59:39
#34 Random Dude (rnd) 1000 (90929) 2018-12-11 15:48:04
#35 zuben c3 (zuben-c3) 1000 (24853) 2019-02-04 12:42:31
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Unknown Author

[schroedel-02] - 2 users already solved this challenge.
 
 
 

The author of the German book "The Art of Deciphering", written 1808 remains unknown. However, the editor signs the preface with a cipher (Semicolon Plus One Triangle Plus Circle Period). Is this the encrypted name of the author?
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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 (#2) Achieved points (Global score) y-m-d - h:m:s

Kai (freiburger) 600 (700) 2013-06-04 11:26:00
Julia Bernotat (El Greco ) 900 (81129) 2015-11-05 19:36:00
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D'Agapeyeff

[schmeh-02] - 0 users already solved this challenge.
 
 
 

In 1939, the Russian-born Briton Alexander D'Agapeyeff published a book named "Codes and Ciphers". This book contains a ciphertext that was meant as an exercise. So far, nobody has been able to decrypt this ciphertext. In later editions of his book, this exercise was omitted – possibly because he had forgotten the solution himself. D'Agapeyeff may have made a mistake during the encryption procedure, which makes it now difficult to find the cleartext.
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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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