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Level II Challenges (139)

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

Polyphonic Substitution Cipher — Part 1

[tomokiyo-02] - 9 users already solved this challenge, 3 are working on it.
 
 
 

In a polyphonic cipher, two or more plaintext letters correspond to one ciphertext symbol.
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Published on: 2019-11-21 13:18
Maximum number of attempts for this challenge: 10

All successful users of this challenge

Rank User (#9) Achieved points (Global score) y-m-d - h:m:s

sarah b (silva) 2000 (31135) 2019-11-22 10:56:16
Bart den Hartog (Bart13) 1725 (148936) 2019-11-23 15:02:52
George Lasry (george4096) 1725 (307439) 2019-11-23 17:29:00
Snake (snk) 1725 (93659) 2019-11-23 21:47:29
#5 D3d4lu5 (D3d4lu5) 1725 (302572) 2019-11-23 22:47:12
#6 Kurt Gebauer (Yokozuna) 1547 (189263) 2019-11-28 02:28:03
#7 Eugene (lim0n) 1423 (83028) 2019-12-05 17:45:31
#8 Danny Higgins (hamster147) 1349 (39638) 2019-12-18 00:49:54
#9 Random Dude (rnd) 1337 (98550) 2019-12-20 18:42:25
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   +++    [23:54 - 19.02.2020] Veselovský solved the Level II challenge 'The LoRa Cipher: Logic Randomness — Part 1'    +++    [21:20 - 19.02.2020] DariaS solved the Level I challenge 'A hidden word'    +++    [16:33 - 19.02.2020] He3 solved the Level I challenge 'Cryptanalysis Hacking Puzzles — Part 2'    +++    [10:38 - 19.02.2020] Lurkrul solved the Level II challenge 'Broadcasting and low exponent — RSA-Attack'    +++    [09:53 - 19.02.2020] Lurkrul solved the Level II challenge 'Alice's Birthday Party (Part 2)'    +++