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Level I Challenges (75)

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

M-138 — Part 1

[schmeh-09] - 123 users already solved this challenge, 11 are working on it.
 
 
 

This is the beginner's challenge in a series about M-138, a manual cipher of the US army which has been relatively save at the beginning of world war 2nd. Part 1 of the series is a ciphertext-only challenge whose key is largely known.
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Published on: 2014-12-24 00:28
Maximum number of attempts for this challenge: 15

All successful users of this challenge

Rank User (#123) Achieved points (Global score) y-m-d - h:m:s

Bart den Hartog (Bart13) 200 (116412) 2014-12-24 01:44:19
Kurt Gebauer (Yokozuna) 200 (120839) 2014-12-24 06:16:27
Viktor (Veselovský) 200 (113116) 2014-12-24 12:52:59
Snake (snk) 200 (51689) 2014-12-24 14:45:53
#5 Armin Krauss (argh) 200 (155287) 2014-12-24 16:21:56
#6 Robert (rm) 200 (56012) 2014-12-24 16:32:14
#7 Michael Möller (michaelm) 200 (118745) 2014-12-24 20:14:28
#8 H. Lautenschlager (helmi) 200 (18162) 2014-12-24 20:32:35
#9 George (Theofanidis) 200 (88988) 2014-12-24 20:37:00
#10 Andreas Frerichs (Ossili) 150 (33026) 2014-12-25 16:30:33
#11 jgausem1 (jgausem1) 150 (3299) 2014-12-25 17:52:48
#12 Francisco Moraes (fmoraes) 133 (90044) 2014-12-26 14:09:16
#13 E.T (Ertheb) 133 (54872) 2014-12-26 18:05:26
#14 Julia Bernotat (El Greco ) 125 (81129) 2014-12-27 01:40:42
#15 Claude Vaillancourt (Cl3v3r) 125 (38251) 2014-12-27 20:22:55
#16 Luigi Tomelli (archstanton) 120 (95549) 2014-12-28 10:39:59
#17 Tim Fink (Magellan) 120 (4626) 2014-12-28 14:49:28
#18 KW (qwer*) 120 (13753) 2014-12-28 21:12:38
#19 Thomas Lambert (lambert) 108 (38594) 2015-01-04 11:46:33
#20 j.h. (haegarq) 108 (11696) 2015-01-05 10:27:53
#21 Kim H. S. (tenchijin) 108 (21586) 2015-01-05 13:40:54
#22 Hans Joachim Girulat (joregi) 106 (28462) 2015-01-08 10:59:32
#23 Dusan (xxdradus) 106 (40134) 2015-01-09 10:31:09
#24 WF (f077) 105 (6874) 2015-01-11 11:28:17
#25 Glen (Snoth) 105 (105) 2015-01-12 19:30:39
#26 Sebastian Slupina (Grandwizard) 105 (6901) 2015-01-14 21:07:10
#27 Roger Crews (rogerbrandon) 104 (3588) 2015-01-17 12:48:58
#28 DirkS (Dustman) 104 (8378) 2015-01-19 15:39:03
#29 Alain (Integral) 104 (198642) 2015-01-20 17:01:17
#30 Javantea (Javantea) 103 (38889) 2015-01-21 19:05:19
#31 Joerg Schaeffler (DrAcula) 103 (2948) 2015-01-21 23:02:47
#32 HolgerK (HolgerK) 103 (23648) 2015-01-24 20:22:31
#33 Kerstin (herzchen412) 103 (3937) 2015-01-27 16:25:20
#34 Martin (LordMartin) 102 (302) 2015-02-04 03:47:25
#35 Vlatiha Romanova (Vlatiha) 102 (10223) 2015-02-09 21:54:12
#36 Tom Tox (tox) 102 (11752) 2015-02-12 12:09:02
#37 Em Doulgerakis (Greko) 102 (109970) 2015-02-12 15:29:29
#38 Hank (hanky) 102 (22859) 2015-02-13 06:49:41
#39 piltil (piltil) 102 (1351) 2015-02-13 23:53:06
#40 Georgius Stolte (HazmatsFear) 102 (14247) 2015-02-15 20:53:01
#41 Steve (Samacian) 102 (23704) 2015-02-17 03:35:41
#42 Michael Jeffrey (empjay) 102 (2904) 2015-02-17 20:03:53
#43 theresa (ttt) 102 (102) 2015-02-18 17:37:18
#44 Elena (Lifeindeath) 102 (2798) 2015-02-19 15:16:22
#45 TURINGBOMBE (TBREAKER) 102 (10616) 2015-02-22 16:14:52
#46 Wojciech Czernous (kristoff.njute) 102 (102) 2015-02-26 11:08:48
#47 coldwaterq (coldwaterq) 102 (1705) 2015-02-27 09:44:09
#48 Lutz Sittinger (Kryptolutz) 101 (1602) 2015-03-01 13:37:28
#49 Marta (argo916) 101 (501) 2015-03-01 14:05:26
#50 Kristina (horizonte) 101 (601) 2015-03-01 19:42:54
#51 K.S.Krishna Chandran (krishnan1996) 101 (101) 2015-03-04 15:07:07
#52 Johannes Leupold (TraderJoe) 101 (403) 2015-03-04 22:16:44
#53 chris (td-sec) 101 (202) 2015-03-06 12:12:18
#54 Ignacio (Moebiusar) 101 (4774) 2015-03-11 20:24:49
#55 Karl Schutt (günter) 101 (34469) 2015-03-14 14:35:19
#56 george lasry (george4096) 101 (281491) 2015-03-21 01:09:17
#57 S Combes (jerva) 101 (77932) 2015-03-22 13:58:14
#58 Rainer Zufall (kiekuk) 101 (42198) 2015-03-28 20:25:19
#59 Guglielmo (Molinari) 101 (201) 2015-03-30 09:52:55
#60 Patrick Renz (tarantulla) 101 (2027) 2015-04-07 10:48:00
#61 Thomas Gonda (TomG) 101 (33741) 2015-04-09 21:09:54
#62 oxylius (oxylius) 101 (1404) 2015-04-11 22:22:11
#63 Stephan (stegi) 101 (801) 2015-04-14 23:32:19
#64 mirth23 (mirth23) 101 (7050) 2015-04-15 18:53:52
#65 S (Dingo_the_BB) 101 (6534) 2015-04-15 19:22:34
#66 Martin Schulz (Kristallseele) 101 (2122) 2015-04-16 12:37:14
#67 Zakk (zlefko) 101 (101) 2015-04-21 04:57:46
#68 Peter (Garnet) 101 (14133) 2015-04-21 16:32:00
#69 Lane Williams (planetlane) 101 (6348) 2015-04-25 13:56:36
#70 Nils (NoelzzeN) 101 (2546) 2015-04-25 15:58:49
#71 Hans Peter (hanspeter) 101 (48115) 2015-05-01 10:29:25
#72 Christian von Mach (cvm) 101 (726) 2015-05-05 12:23:46
#73 Andi (MTAndi) 101 (301) 2015-05-07 11:15:53
#74 partamier (yann) 101 (5435) 2015-05-14 10:42:21
#75 Forrest Gump (Polyphem) 101 (38763) 2015-05-19 22:36:45
#76 zahir mohsen moradi (ariobarzan) 101 (99757) 2015-05-27 21:09:03
#77 Niklas (Seuchenpilz) 101 (301) 2015-06-03 22:00:25
#78 Dave (compsec) 101 (3631) 2015-06-07 02:23:34
#79 Michael Ammon (Ammonym) 101 (7719) 2015-06-13 19:00:18
#80 Jens Hansen (bonnaix) 101 (3410) 2015-06-26 10:40:47
#81 Bernhard Gruber (bgr) 101 (22631) 2015-06-30 09:28:52
#82 Maria (julesjulchen) 100 (2919) 2015-07-21 14:28:18
#83 sn0c (sn0c) 100 (200) 2015-08-03 01:19:20
#84 Tradecraft (Tradecraft) 100 (5540) 2015-08-03 22:57:09
#85 Jan Hoffmann (dasmensch) 100 (400) 2015-09-01 22:19:36
#86 Roeland (roelieproelie) 100 (403) 2015-09-04 12:26:51
#87 Alain Collignon (vexilla72) 100 (51007) 2015-09-30 10:13:47
#88 Manfred Wurm (Tschabobo) 100 (7619) 2015-10-15 15:01:22
#89 Martin (martinbucher) 100 (22726) 2015-10-24 16:29:41
#90 S (Zyphe) 100 (8324) 2015-10-31 19:47:43
#91 Nofre Tete (noffi) 100 (10522) 2016-01-22 23:33:37
#92 Szabó Zoltán (szabo.z87) 100 (47990) 2016-01-29 10:11:37
#93 Peter Horner (Peer) 100 (4764) 2016-02-01 15:58:12
#94 Wojciech (WojciechM) 100 (501) 2016-02-03 11:07:03
#95 Ines (bufo01) 100 (3612) 2016-02-22 20:50:44
#96 Dominik M. (Sgt. Pepper) 100 (43997) 2016-03-15 14:22:00
#97 Fabian (XP-72) 100 (3496) 2016-03-18 14:44:45
#98 Gabriel Bigpenguin (BigPenguin) 100 (500) 2016-03-20 08:28:21
#99 Ulf Nilsson (unilsson) 100 (1100) 2016-04-12 19:43:33
#100 Gugu (Willyz) 100 (1810) 2016-04-19 16:41:29
#101 Norbert Biermann (Norbert) 100 (40024) 2016-07-20 23:32:55
#102 CESH (cesh) 100 (4995) 2016-08-18 22:52:11
#103 Nicolas (nicosPavlov) 100 (71054) 2016-10-04 13:27:37
#104 Hajoe (Tintin-Muc) 100 (6723) 2016-10-19 19:43:11
#105 Daniel Walder (ibex) 100 (14372) 2016-10-24 13:30:22
#106 Yass (Yass) 100 (300) 2016-11-02 23:45:00
#107 Simon Jakob (simon.jakob) 100 (18714) 2016-11-17 15:19:45
#108 zuben c3 (zuben-c3) 100 (15014) 2016-11-21 22:42:40
#109 JoGo (JoGo) 100 (11285) 2016-12-04 13:45:04
#110 Michael (FoM) 100 (13778) 2016-12-18 01:04:59
#111 Marcel (bene1512) 100 (20896) 2016-12-25 14:26:50
#112 Robert Kosten (Robert Kosten) 100 (2724) 2017-01-02 18:13:57
#113 Julian (Lemmynator) 100 (5931) 2017-01-14 23:07:28
#114 J-L Morel (Rossignol) 100 (23146) 2017-01-17 19:43:38
#115 Rene (ion) 100 (5617) 2017-02-08 22:26:51
#116 chris (c2) 100 (51973) 2017-02-28 18:17:46
#117 Mir Dim (mir0soft) 100 (49971) 2017-03-15 10:54:53
#118 Nils Rehwald (NoelzeN) 100 (3465) 2017-03-22 11:58:44
#119 sarah b (silva) 100 (3502) 2017-04-23 10:52:10
#120 Peter Grosse-Hering (Peter) 100 (8097) 2017-04-26 14:33:17
#121 Danny Higgins (hamster147) 100 (15597) 2017-05-16 00:28:59
#122 D3d4lu5 (D3d4lu5) 100 (57702) 2017-06-16 03:11:02
#123 Akonia (Akonia12) 100 (12153) 2017-07-20 22:24:31
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