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Level II Challenges (139)

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

Monoalphabetic Substitution with Nostradamus Flavor

[theofanidis-08] - 20 users already solved this challenge, 1 is working on it.
 
 
 

What would Nostradamus do to make a mono-alphabetic substitution harder to break?
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Published on: 2019-02-16 12:28
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#20) Achieved points (Global score) y-m-d - h:m:s

Armin Krauss (argh) 2000 (192214) 2019-02-16 13:26:09
D3d4lu5 (D3d4lu5) 2000 (302572) 2019-02-16 15:57:07
Dominik M. (Sgt. Pepper) 2000 (103375) 2019-02-16 19:22:15
George Lasry (george4096) 2000 (307439) 2019-02-16 21:43:46
#5 Viktor (Veselovský) 2000 (159163) 2019-02-16 23:02:15
#6 Alain Collignon (vexilla72) 2000 (114294) 2019-02-16 23:07:32
#7 Kurt Gebauer (Yokozuna) 2000 (191263) 2019-02-17 06:54:14
#8 Snake (snk) 1824 (95659) 2019-02-17 17:11:33
#9 Luigi Tomelli (archstanton) 1660 (113164) 2019-02-19 13:04:04
#10 Lane Williams (planetlane) 1660 (26272) 2019-02-19 16:02:06
#11 Random Dude (rnd) 1660 (98550) 2019-02-19 17:26:52
#12 Karl Schutt (günter) 1660 (44073) 2019-02-19 18:42:32
#13 sarah b (silva) 1613 (31135) 2019-02-20 15:14:33
#14 Pierre Robier (tripleedged) 1613 (5916) 2019-02-20 21:29:51
#15 Rainer Zufall (kiekuk) 1444 (56786) 2019-02-28 16:30:24
#16 E.T (Ertheb) 1261 (81809) 2019-04-23 17:55:37
#17 Hans Joachim Girulat (joregi) 1223 (36278) 2019-06-07 22:57:11
#18 Michael (FoM) 1217 (38953) 2019-06-18 17:17:19
#19 Bart den Hartog (Bart13) 1185 (148936) 2019-09-11 18:27:40
#20 Derek Hatton (alfred_noble) 1160 (17319) 2020-01-29 23:02:28
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   +++    [07:51 - 25.02.2020] mir0soft solved the Level II challenge 'The LoRa Cipher: Logic Randomness — Part 1'    +++    [00:03 - 25.02.2020] madness solved the Level II challenge 'A Cloaked Substitution Cipher — Part 2'    +++    [23:45 - 24.02.2020] madness solved the Level II challenge 'Typex — Part 2'    +++    [21:34 - 24.02.2020] mir0soft solved the Level II challenge 'Double Column Transposition — Part 3'    +++    [21:12 - 24.02.2020] mir0soft solved the Level II challenge 'Double Column Transposition — Part 1'    +++