MysteryTwister C3
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Level II Challenges (158)

Page 19 of the challenges in Level II, ordered by date posted (the most recent appear first).

Extended Handycipher — Part 1

[kallick-04] - 3 users already solved this challenge, 1 is working on it.
 
 
 

Extended Handycipher is an enhancement of the newly designed cipher Handycipher, which permits pen-and-paper encrypting and decrypting, while providing a significantly high level of security. From the 815-character plaintext the first 229 characters are known.
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2015-03-27 15:26
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#3) Achieved points (Global score) y-m-d - h:m:s

Michael Möller (michaelm) 1192 (253196) 2015-09-27 11:51:38
George Lasry (george4096) 1126 (399565) 2017-05-31 10:23:02
D3d4lu5 (D3d4lu5) 1109 (363488) 2018-11-10 17:59:52
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Handycipher — Part 2

[kallick-02] - 7 users already solved this challenge.
 
 
 

Handycipher is a newly designed cipher to permit pen-and-paper encrypting and decrypting, while providing a significantly high level of security. From the 1142-character plaintext 229 characters somewhere in it are known.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2015-03-03 23:34
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#7) Achieved points (Global score) y-m-d - h:m:s

Alain (Integral) 1232 (207924) 2015-06-09 23:28:30
Michael Möller (michaelm) 1187 (253196) 2015-09-20 13:16:49
Em Doulgerakis (Greko) 1140 (193799) 2016-09-06 10:35:51
George Lasry (george4096) 1125 (399565) 2017-05-27 01:48:16
#5 Nicolas (nicosPavlov) 1116 (257791) 2018-01-30 02:15:53
#6 D3d4lu5 (D3d4lu5) 1109 (363488) 2018-11-01 19:59:30
#7 Random Dude (rnd) 1104 (103645) 2019-07-21 17:29:33
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Handycipher — Part 1

[kallick-01] - 5 users already solved this challenge, 4 are working on it.
 
 
 

Handycipher is a newly designed cipher to permit pen-and-paper encrypting and decrypting, while providing a significantly high level of security. From the 858-character plaintext the first 229 characters are known.
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2015-03-03 23:33
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#5) Achieved points (Global score) y-m-d - h:m:s

Alain (Integral) 1233 (207924) 2015-06-08 17:49:57
Michael Möller (michaelm) 1188 (253196) 2015-09-19 21:09:57
George Lasry (george4096) 1125 (399565) 2017-05-27 01:43:42
Nicolas (nicosPavlov) 1116 (257791) 2018-01-30 05:42:58
#5 D3d4lu5 (D3d4lu5) 1109 (363488) 2018-11-01 17:41:29
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M-138 — Part 4

[schmeh-12] - 25 users already solved this challenge, 1 is working on it.
 
 
 

This is part 4 in a series about the M-138. Part 4 is a ciphertext-only challenge (75 letters).
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Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2014-12-24 00:34
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#25) Achieved points (Global score) y-m-d - h:m:s

Kurt Gebauer (Yokozuna) 2000 (282608) 2014-12-24 12:41:00
Michael Möller (michaelm) 1367 (253196) 2015-01-15 21:25:39
Claude Vaillancourt (Cl3v3r) 1264 (44129) 2015-02-26 17:40:02
E.T (Ertheb) 1228 (81809) 2015-04-06 09:11:56
#5 Alain (Integral) 1178 (207924) 2015-08-17 13:42:22
#6 Julia Bernotat (El Greco ) 1149 (81129) 2016-03-10 21:26:18
#7 Norbert Biermann (Norbert) 1135 (47790) 2016-08-30 20:44:31
#8 Bart den Hartog (Bart13) 1127 (148936) 2017-01-31 14:56:08
#9 George Lasry (george4096) 1122 (399565) 2017-05-24 09:45:52
#10 Armin Krauss (argh) 1122 (206965) 2017-06-06 21:20:09
#11 Mir Dim (mir0soft) 1122 (79760) 2017-06-11 20:24:18
#12 D3d4lu5 (D3d4lu5) 1112 (363488) 2018-04-23 12:52:12
#13 Dominik M. (Sgt. Pepper) 1110 (128575) 2018-07-17 21:55:20
#14 Random Dude (rnd) 1108 (103645) 2018-10-08 19:11:39
#15 Luigi Tomelli (archstanton) 1106 (127538) 2018-12-24 09:17:25
#16 Benjamin (200611736) 1105 (10186) 2019-03-24 19:00:30
#17 Snake (snk) 1097 (187783) 2020-08-05 15:49:38
#18 lakis (lakis) 1095 (3366) 2021-01-27 23:12:13
#19 sarah b (silva) 1095 (49171) 2021-02-17 14:02:59
#20 Martin (martinbucher) 1094 (38365) 2021-03-15 15:31:27
#21 Somebody (Achidutzu) 1094 (16167) 2021-03-19 22:22:09
#22 George (Theofanidis) 1094 (130187) 2021-03-21 23:21:58
#23 Lane Williams (planetlane) 1094 (34637) 2021-04-10 21:42:29
#24 Michael (FoM) 1094 (57794) 2021-04-26 15:51:38
#25 Eric (ExAstris) 1094 (56037) 2021-05-05 05:08:15
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M-138 — Part 3

[schmeh-11] - 57 users already solved this challenge, 4 are working on it.
 
 
 

This is part 3 in a series about the M-138. Part 3 is a ciphertext-only challenge (125 letters).
Read more...

Click here to get to the corresponding forum topic to share your opinion.
Click here to download the challenge.
Click here to download the additional file of the challenge.

Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2014-12-24 00:33
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#57) Achieved points (Global score) y-m-d - h:m:s

Bart den Hartog (Bart13) 2000 (148936) 2014-12-24 09:59:48
Kurt Gebauer (Yokozuna) 1725 (282608) 2014-12-26 03:32:17
Armin Krauss (argh) 1725 (206965) 2014-12-26 21:24:22
Michael Möller (michaelm) 1660 (253196) 2014-12-27 08:15:48
#5 Francisco Moraes (fmoraes) 1613 (90044) 2014-12-28 13:29:32
#6 George (Theofanidis) 1613 (130187) 2014-12-28 22:36:24
#7 Robert (rm) 1444 (56475) 2015-01-05 03:01:18
#8 E.T (Ertheb) 1406 (81809) 2015-01-09 16:57:01
#9 Alain (Integral) 1341 (207924) 2015-01-21 19:13:46
#10 Hans Joachim Girulat (joregi) 1286 (36278) 2015-02-11 09:29:25
#11 Claude Vaillancourt (Cl3v3r) 1283 (44129) 2015-02-13 03:09:20
#12 Nils (NiKo) 1273 (5155) 2015-02-19 16:31:30
#13 George Lasry (george4096) 1240 (399565) 2015-03-21 14:09:09
#14 Nils (NoelzzeN) 1217 (2546) 2015-04-25 13:12:41
#15 zahir mohsen moradi (ariobarzan) 1172 (99757) 2015-09-18 04:25:22
#16 Snake (snk) 1172 (187783) 2015-09-18 13:31:55
#17 Forrest Gump (Polyphem) 1159 (38763) 2015-12-07 18:00:24
#18 Szabó Zoltán (szabo.z87) 1153 (55604) 2016-02-02 21:18:14
#19 Julia Bernotat (El Greco ) 1150 (81129) 2016-02-27 01:33:49
#20 The Killer (Killer) 1150 (42393) 2016-02-29 01:41:53
#21 Martin (martinbucher) 1146 (38365) 2016-04-12 23:43:43
#22 Rainer Zufall (kiekuk) 1138 (56786) 2016-07-18 11:04:16
#23 Norbert Biermann (Norbert) 1137 (47790) 2016-07-31 15:53:39
#24 chris_3stones (3stones) 1133 (38845) 2016-10-10 20:35:59
#25 Alain Collignon (vexilla72) 1133 (123666) 2016-10-16 07:29:56
#26 J-L Morel (Rossignol) 1128 (42130) 2017-01-20 09:22:01
#27 Nicolas (nicosPavlov) 1127 (257791) 2017-02-07 02:37:23
#28 chris (c2) 1125 (51973) 2017-03-13 21:23:43
#29 Mir Dim (mir0soft) 1125 (79760) 2017-03-17 07:37:36
#30 Nils Rehwald (NoelzeN) 1125 (3465) 2017-03-22 12:32:32
#31 D3d4lu5 (D3d4lu5) 1119 (363488) 2017-08-12 05:24:12
#32 Lane Williams (planetlane) 1115 (34637) 2018-01-08 18:38:16
#33 Danny Higgins (hamster147) 1113 (39638) 2018-03-22 19:37:56
#34 Ignacio (Moebiusar) 1113 (7390) 2018-03-23 15:14:50
#35 Eric (ExAstris) 1111 (56037) 2018-06-19 01:35:01
#36 Random Dude (rnd) 1108 (103645) 2018-09-24 23:45:16
#37 João Vaz Martins (Awakening Star) 1107 (4561) 2018-11-01 06:20:16
#38 Luigi Tomelli (archstanton) 1106 (127538) 2018-12-21 18:37:03
#39 Bertolo (Bertolo) 1106 (7167) 2019-01-04 13:07:01
#40 zuben c3 (zuben-c3) 1106 (42163) 2019-01-06 12:06:10
#41 Kevin Weber (ThunderArmy) 1105 (7783) 2019-02-07 23:54:04
#42 Mike (RogueRamblers) 1104 (81614) 2019-05-14 02:23:33
#43 Stephan (Stephje1978) 1103 (27064) 2019-07-10 19:27:05
#44 Jeff (Fountain) 1103 (9289) 2019-07-14 00:49:50
#45 Eugene (lim0n) 1103 (193160) 2019-07-14 14:56:46
#46 Gerd Wilts (gerdw) 1102 (50634) 2019-07-27 12:45:38
#47 Erik (Erox) 1102 (26141) 2019-07-28 19:22:34
#48 KlausG (lösbär) 1099 (11811) 2020-03-28 22:56:08
#49 Roger Crews (rogerbrandon) 1098 (4686) 2020-04-13 09:52:08
#50 Viktor (Veselovský) 1097 (169444) 2020-08-29 13:15:27
#51 sarah b (silva) 1096 (49171) 2020-09-12 13:52:20
#52 Flo (sealth) 1096 (25734) 2020-11-14 21:34:31
#53 DS (DS8279) 1096 (29732) 2020-11-18 13:01:47
#54 Em Doulgerakis (Greko) 1095 (193799) 2021-01-23 13:47:23
#55 Somebody (Achidutzu) 1094 (16167) 2021-03-19 20:06:38
#56 gordon (sir5) 1094 (16181) 2021-04-14 05:26:44
#57 Michael (FoM) 1094 (57794) 2021-04-17 14:26:20
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   +++    [21:13 - 29.07.2021] thatbusybeaver solved the Level II challenge 'RSA Factoring Challenge: RSA-704'    +++    [20:41 - 29.07.2021] thatbusybeaver solved the Level II challenge 'Summer Job'    +++    [07:46 - 29.07.2021] thatbusybeaver solved the Level II challenge 'Enigma Part 1'    +++    [07:42 - 29.07.2021] thatbusybeaver solved the Level II challenge 'Letter to the Templars — Part 3'    +++    [07:33 - 29.07.2021] thatbusybeaver solved the Level I challenge 'Letter to the Templars — Part 2'    +++