Level III Challenges (61)
Page 1 of the challenges in
Level III, ordered by date posted (the most recent appear first).
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Handycipher is a newly created cipher designed to permit pen-and-paper encrypting and decrypting, while providing a significantly high level of security. Part 8 is the same as Part 5, but uses an improved version of the cipher. You are given the ciphertext and 229 letters occuring at an unknown location in the plaintext. Read more...
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Author:
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Published on: 2017-01-21 22:14 |
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Maximum number of attempts for this challenge: 20 |
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All successful users of this challenge
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User (#3) |
Achieved points (Global score) |
y-m-d - h:m:s |
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George Lasry (george4096)
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14917 (302230) |
2017-05-28 23:32:02 |
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Michael Möller (michaelm)
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14117 (175129) |
2018-04-04 18:16:20 |
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D3d4lu5 (D3d4lu5)
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13830 (297709) |
2019-01-26 09:32:09 |
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