Level II Challenges (137)
Page 1 of the challenges in
Level II, ordered by date posted (the most recent appear first).
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The challenges for the weakened Handycipher serve as an exercise and use an intentionally weakened version of Handycipher. Part 3 is a ciphertext-only challenge.
Handycipher is a newly designed cipher to permit pen-and-paper encrypting and decrypting, while providing a significantly high level of security. Read more...
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Click here to download the additional file of the challenge.
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Author:
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Published on: 2015-05-13 11:49 |
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Maximum number of attempts for this challenge: 15 |
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All successful users of this challenge
| Rank |
User (#14) |
Achieved points (Global score) |
y-m-d - h:m:s |
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Kurt Gebauer (Yokozuna)
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2000 (184116) |
2015-05-13 21:52:11 |
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Armin Krauss (argh)
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1576 (190214) |
2015-05-18 14:55:24 |
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Julia Bernotat (El Greco )
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1485 (81129) |
2015-05-23 00:58:36 |
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S Combes (jerva)
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1444 (99132) |
2015-05-26 08:31:39 |
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#5 |
Alain (Integral)
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1357 (207924) |
2015-06-07 10:32:44 |
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#6 |
zahir mohsen moradi (ariobarzan)
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1216 (99757) |
2015-09-14 18:27:06 |
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#7 |
Michael Möller (michaelm)
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1216 (179934) |
2015-09-14 18:54:08 |
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#8 |
Em Doulgerakis (Greko)
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1152 (131437) |
2016-06-24 14:59:34 |
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#9 |
George Lasry (george4096)
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1128 (307439) |
2017-05-27 03:40:02 |
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#10 |
Nicolas (nicosPavlov)
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1119 (151166) |
2018-01-23 02:27:58 |
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#11 |
D3d4lu5 (D3d4lu5)
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1111 (302572) |
2018-10-27 06:27:48 |
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#12 |
Viktor (Veselovský)
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1108 (157163) |
2019-02-22 23:32:41 |
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#13 |
Danny Higgins (hamster147)
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1106 (39638) |
2019-05-08 16:05:36 |
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#14 |
Random Dude (rnd)
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1106 (98550) |
2019-06-15 03:11:22 |
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