MysteryTwister C3
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Level X Challenges (15)

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

Catherine of Aragon's Letter to King Ferdinand, her Father (1509)

[tomokiyo-01] - 2 users already solved this challenge.
 
 
 

On November 3rd, 1509, Catherine of Aragon wrote an encrypted letter to her father. What did she tell him?
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2018-11-28 15:42
Maximum number of attempts for this challenge: 15

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Rank User (#2) Achieved points (Global score) y-m-d - h:m:s

Thomas (Thomas4897) 2000 (6596) 2018-12-11 15:50:54
Viktor (Veselovský) 2000 (142053) 2018-12-11 15:52:01
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The Vatikan Challenge — Part 2

[megyesi-02] - 3 users already solved this challenge.
 
 
 

The Secret Archives of the Vatican keep a large collection of ciphertexts from papal correspondence. The keys of these manuscripts have been destroyed, or are kept elsewhere and been forgotten. Can you find out how to decipher the letter from March 14, 1625?
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2018-02-14 20:43
Maximum number of attempts for this challenge: 15

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Rank User (#3) Achieved points (Global score) y-m-d - h:m:s

Norbert Biermann (Norbert) 2000 (44430) 2018-03-20 15:45:57
Thomas (Thomas4897) 1000 (6596) 2018-04-16 16:42:50
Tomokiyo (cryptiana) 1000 (1000) 2018-06-01 14:59:09
The solution for this challenge was made public on 2018-06-20, 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 Vatican Challenge — Part 1

[megyesi-01] - 3 users already solved this challenge.
 
 
 

The Main Library of the Vatican owns some encrypted manuscripts, waiting for decryption. Can you find the solution to the letter from 1628?
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Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2018-02-14 20:36
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#3) Achieved points (Global score) y-m-d - h:m:s

Thomas (Thomas4897) 2000 (6596) 2018-03-12 15:00:33
Norbert Biermann (Norbert) 1000 (44430) 2018-03-20 14:59:36
Tomokiyo (cryptiana) 0 (1000) 2018-08-13 15:02:13
The solution for this challenge was made public on 2018-06-20, 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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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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No one solved the challenge right now. Be the first!
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Concealed Messages — Vigenère's Night Sky

[schmeh-08] - 16 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 (#16) Achieved points (Global score) y-m-d - h:m:s

Viktor (Veselovský) 2000 (142053) 2012-05-04 03:23:00
Armin Krauss (argh) 1807 (175390) 2012-05-05 18:20:00
J. M. (jomandi) 1613 (113270) 2012-05-13 13:00:00
E.T (Ertheb) 1199 (70256) 2012-10-12 22:20:00
#5 Bart den Hartog (Bart13) 1179 (118984) 2012-12-21 01:17:00
#6 Alain (Integral) 1132 (207924) 2014-03-05 08:52:42
#7 Michael Doucha (mdou) 1131 (13757) 2014-03-26 14:22:00
#8 Kurt Gebauer (Yokozuna) 1118 (146278) 2015-02-08 23:55:15
#9 Julia Bernotat (El Greco ) 1118 (81129) 2015-02-14 11:07:00
#10 HolgerK (HolgerK) 1117 (25776) 2015-02-17 12:22:01
#11 Joerg G. (SnifferMaster) 1110 (18154) 2015-11-15 11:52:00
#12 Szabó Zoltán (szabo.z87) 1109 (55604) 2015-12-29 10:00:51
#13 KW (qwer*) 1109 (13963) 2016-01-03 20:40:00
#14 Norbert Biermann (Norbert) 1105 (44430) 2016-07-15 12:39:00
#15 j.h. (haegarq) 0 (15252) 2017-07-26 16:56:19
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.
You must be logged in to solve the challenge
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   +++    [01:18 - 23.03.2019] ykaridi solved the Level II challenge 'Partial Key Exposure with RSA — Part 1'    +++    [01:06 - 23.03.2019] ykaridi solved the Level II challenge 'Broadcasting and low exponent — RSA-Attack'    +++    [00:58 - 23.03.2019] ykaridi solved the Level II challenge 'Alice's Birthday Party (Part 2)'    +++    [23:43 - 22.03.2019] ykaridi solved the Level II challenge 'Alice's Birthday Party (Part 1)'    +++    [23:33 - 22.03.2019] ykaridi solved the Level II challenge 'RSA: Two different keys — same ciphertext'    +++