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Level II Challenges (160)

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

Weakened Handycipher — Part 5
[kallick-19] - 5 users already solved this challenge.
 
 
 
The Weakened Handycipher challenges serve as an exercise and use an intentionally weakened version of Handycipher. Part 5 is the same as Part 2, but uses an improved version of the cipher. It is ciphertext-only, but you are given some partial information about the key.
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Published on: 2016-06-28 20:10
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#5) Achieved points (Global score) y-m-d - h:m:s
Michael Möller (michaelm) 1337 (253196) 2016-07-28 16:36:55
Alain (Integral) 1310 (207924) 2016-08-06 16:25:46
George Lasry (george4096) 1161 (399565) 2017-05-29 21:15:02
Nicolas (nicosPavlov) 1136 (257791) 2018-02-18 11:18:20
#5 D3d4lu5 (D3d4lu5) 1123 (363488) 2018-10-31 22:03:45
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   +++    [01:47 - 02.08.2021] jerva solved the Level II challenge 'SIGABA CSP-2900 — Part 1'    +++    [00:40 - 02.08.2021] mochiorochi solved the Level I challenge 'Beaver Code'    +++    [22:51 - 01.08.2021] mochiorochi solved the Level I challenge 'A hidden word'    +++    [22:46 - 01.08.2021] mochiorochi solved the Level II challenge 'Letter to the Templars — Part 3'    +++    [22:05 - 01.08.2021] mochiorochi solved the Level I challenge 'Letter to the Templars — Part 2'    +++