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Level I Challenges (77)

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

Playfair Encryption

[schoettle-01] - 81 users already solved this challenge, 8 are working on it.
 
 
 

In this challenge you shall break the Playfair encryption which was used by the British forces in the Crimean War and in World War I, among others.
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Author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published on: 2010-12-22 00:00
Maximum number of attempts for this challenge: 25

All successful users of this challenge

Rank User (#81) Achieved points (Global score) y-m-d - h:m:s

Vincent (Bwian) 133 (552) 2010-12-24 04:03:59
Armin Krauss (argh) 113 (164447) 2010-12-29 19:12:56
Lukas (Kahla) 104 (4719) 2011-01-17 00:12:12
David (aki321) 103 (27482) 2011-01-23 15:31:00
#5 Flip (Flip) 103 (31107) 2011-01-25 17:32:25
#6 Alan Dixon (NickBourbaki) 102 (7761) 2011-02-05 15:10:10
#7 Thomas Gonda (TomG) 101 (33741) 2011-03-11 15:32:09
#8 Wombat (Wombat) 101 (5822) 2011-04-25 17:32:51
#9 mischa (mmisc) 101 (22426) 2011-05-01 01:47:17
#10 The Killer (Killer) 101 (42393) 2011-06-15 03:41:22
#11 Seth Kintigh (DarkFibre) 100 (79471) 2011-07-12 05:10:05
#12 Daniel Fretwell (fretty) 100 (30107) 2011-07-31 11:19:15
#13 Viktor (Veselovský) 100 (123039) 2011-08-13 01:21:56
#14 J. M. (jomandi) 100 (113270) 2011-09-20 23:12:09
#15 Nathan (Witten) 100 (25326) 2011-12-13 01:34:23
#16 Bart den Hartog (Bart13) 100 (118984) 2012-01-31 00:55:43
#17 John (Tiger) 100 (1505) 2012-02-20 21:51:02
#18 bubba gump (surrenderyourworld) 100 (925) 2012-04-08 23:31:45
#19 Kurt Gebauer (Yokozuna) 100 (133741) 2012-06-01 01:34:30
#20 Michel Van Caneghem (vancan) 100 (49719) 2012-06-14 16:48:33
#21 Luigi Tomelli (archstanton) 100 (95549) 2012-06-16 17:48:12
#22 Dusan (xxdradus) 100 (40236) 2012-07-12 14:26:20
#23 E.T (Ertheb) 100 (62144) 2012-09-27 19:44:24
#24 Michael Möller (michaelm) 100 (120945) 2012-11-14 17:33:28
#25 Snake (snk) 100 (61265) 2013-01-28 18:13:10
#26 Ramon Rojas (superme) 100 (3409) 2013-04-05 03:01:38
#27 swarmspider (swarmspider) 100 (4528) 2013-04-22 14:50:11
#28 RPH (derichard) 100 (27044) 2013-05-13 21:32:26
#29 george lasry (george4096) 100 (281594) 2013-08-18 00:47:53
#30 zahir mohsen moradi (ariobarzan) 100 (99757) 2013-08-27 16:00:21
#31 Em Doulgerakis (Greko) 100 (113859) 2013-10-04 18:02:20
#32 chris_3stones (3stones) 100 (37759) 2013-10-05 21:46:00
#33 George (Theofanidis) 100 (93479) 2013-10-06 21:02:37
#34 H. Lautenschlager (helmi) 100 (28409) 2013-10-15 19:04:19
#35 Norbert Paefgen (egebamyasi) 100 (2728) 2013-12-01 17:16:49
#36 Jim Gillogly (Scryer) 100 (21260) 2013-12-02 08:18:08
#37 Francisco Moraes (fmoraes) 100 (90044) 2013-12-11 15:34:26
#38 Alain (Integral) 100 (198642) 2013-12-15 18:07:05
#39 cworstell (ace2) 100 (4870) 2013-12-20 15:17:44
#40 Marcel (bene1512) 100 (20896) 2014-02-02 01:08:47
#41 Sascha (The Hoddich) 100 (4350) 2014-03-06 15:15:53
#42 mark (FivePrime) 100 (3345) 2014-03-21 17:21:25
#43 Stefan Vahlsten Öhlin (goomba) 100 (200) 2014-05-10 13:27:16
#44 julius gaius (julius) 100 (25581) 2014-07-29 16:35:57
#45 Robert (rm) 100 (56362) 2014-07-31 22:48:20
#46 jej (stationz) 100 (4939) 2014-11-08 21:24:19
#47 Tim Fink (Magellan) 100 (4876) 2014-11-16 12:32:09
#48 Pavel (haw) 100 (22728) 2014-12-07 22:44:33
#49 Julia Bernotat (El Greco ) 100 (81129) 2014-12-21 21:45:26
#50 Claude Vaillancourt (Cl3v3r) 100 (38251) 2014-12-26 18:50:37
#51 Danny Higgins (hamster147) 100 (17821) 2014-12-27 10:33:19
#52 Bertold (bk) 100 (8972) 2014-12-29 18:25:59
#53 S Combes (jerva) 100 (81932) 2015-01-19 22:47:34
#54 HolgerK (HolgerK) 100 (25776) 2015-01-27 20:40:39
#55 partamier (yann) 100 (5435) 2015-03-21 14:33:02
#56 Karl Schutt (günter) 100 (34469) 2015-04-17 20:24:18
#57 Andreas Frerichs (Ossili) 100 (33266) 2015-06-26 09:47:48
#58 Thomas Lambert (lambert) 100 (38594) 2015-07-09 14:32:02
#59 Hans Joachim Girulat (joregi) 100 (28462) 2015-07-16 15:05:16
#60 J-L Morel (Rossignol) 100 (29125) 2015-07-28 08:41:44
#61 Tradecraft (Tradecraft) 100 (5540) 2015-08-04 14:11:08
#62 Rainer Zufall (kiekuk) 100 (47286) 2015-10-04 17:41:36
#63 Szabó Zoltán (szabo.z87) 100 (47990) 2015-11-10 13:19:19
#64 Alain Collignon (vexilla72) 100 (59581) 2015-11-13 07:37:47
#65 Lane Williams (planetlane) 100 (11448) 2015-12-28 01:17:09
#66 Marc (rcll0891) 100 (20477) 2016-01-12 22:06:41
#67 Norbert Biermann (Norbert) 100 (40024) 2016-07-12 10:45:43
#68 Bernhard Gruber (bgr) 100 (22889) 2016-07-28 15:56:57
#69 Nicolas (nicosPavlov) 100 (102215) 2016-10-07 16:44:16
#70 Michael (FoM) 100 (13778) 2016-12-31 00:17:03
#71 zuben c3 (zuben-c3) 100 (15014) 2017-01-09 14:52:32
#72 Dominik M. (Sgt. Pepper) 100 (55873) 2017-03-31 22:04:05
#73 chris (c2) 100 (51973) 2017-04-24 15:19:50
#74 Mir Dim (mir0soft) 100 (72404) 2017-05-20 08:58:06
#75 D3d4lu5 (D3d4lu5) 100 (73077) 2017-06-22 10:31:32
#76 Handreo (handreoc) 100 (100) 2017-06-24 02:28:33
#77 Peter (Garnet) 100 (14133) 2017-07-01 15:43:36
#78 Kim H. S. (tenchijin) 100 (25265) 2017-08-27 15:20:58
#79 andy (drandika) 100 (500) 2018-01-18 11:17:00
#80 Nofre Tete (noffi) 100 (11627) 2018-01-25 19:53:42
#81 Sebastian Slupina (Grandwizard) 100 (10264) 2018-02-15 18:26:39
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