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Level II Challenges (162)

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

Cipher ID — Part 1

[mistamp-01] - 15 users already solved this challenge, 6 are working on it.
 
 
 

Determine which type of classic cipher was used to generate each of 500 ciphertext messages. The ciphers used in this challenge are simple substitution, columnar transposition, Vigenère, Playfair, and Hill.
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2019-11-19 12:00
Maximum number of attempts for this challenge: 20

All successful users of this challenge

Rank User (#15) Achieved points (Global score) y-m-d - h:m:s

Bart den Hartog (Bart13) 2000 (149337) 2019-11-19 13:05:00
Viktor (Veselovský) 2000 (169444) 2019-11-19 14:41:45
D3d4lu5 (D3d4lu5) 2000 (363488) 2019-11-20 00:40:59
Armin Krauss (argh) 2000 (206965) 2019-11-20 10:40:28
#5 Eugene (lim0n) 1725 (199334) 2019-11-21 17:34:47
#6 George Lasry (george4096) 1660 (422251) 2019-11-22 23:30:33
#7 Kurt Gebauer (Yokozuna) 1613 (286256) 2019-11-23 22:20:16
#8 Snake (snk) 1444 (187783) 2019-12-02 11:48:55
#9 sakis55555 sakis (sakis55555) 1252 (2435) 2020-02-02 00:25:04
#10 George (Theofanidis) 1252 (137118) 2020-02-02 08:21:12
#11 sarah b (silva) 1248 (52424) 2020-02-06 10:29:55
#12 madness (madness) 1230 (71592) 2020-02-27 23:03:53
#13 Mike (RogueRamblers) 1195 (81614) 2020-05-12 02:33:57
#14 Em Doulgerakis (Greko) 1153 (193799) 2020-12-27 11:28:04
#15 Random Dude (rnd) 1143 (103645) 2021-04-10 22:59:57
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   +++    [22:12 - 18.10.2021] NikM solved the Level I challenge 'Wheatstone Cryptograph — Part 1'    +++    [18:43 - 18.10.2021] TaRaSS solved the Level I challenge 'Affine Codes / Modulo Arithmetic with N / Extended Euclid'    +++    [17:10 - 18.10.2021] tAnAs solved the Level I challenge 'Letter to the Templars — Part 2'    +++    [16:42 - 18.10.2021] TaRaSS solved the Level I challenge 'Beaver Code'    +++    [16:23 - 18.10.2021] TaRaSS solved the Level I challenge 'Number Sequence — Part 2'    +++