(current prize is 200 points)
Cryptography Challenge #23: "Concentric Circle Cipher"
Decode the secret message below:
Hint 1
Hint 2
Hint 3
Scoreboard
# User Points Time
1 Huy 200 2007-10-12 10:00:21
2 200 2007-10-12 16:18:20
3 200 2007-10-13 02:21:48
4 200 2007-10-15 09:07:22
5 sai 200 2007-10-15 09:09:26
6 sh666666 200 2010-09-11 14:51:13
7 200 2010-09-12 05:21:35
8 extinctionz 200 2010-09-13 23:55:47
9 Angela 200 2010-09-14 12:43:55
10 Evangelion 200 2010-09-14 23:32:29
11 dragonflare88 200 2010-09-16 16:33:02
12 dhkim84 200 2010-09-16 16:36:21
13 avio777 200 2010-09-16 17:27:56
14 Genjiff 200 2010-09-16 20:45:47
15 KennyK 200 2010-09-16 20:49:49
16 tumalu 200 2010-09-17 18:37:44
17 inuyasha 200 2010-09-20 04:59:53
18 colmaning 200 2010-09-21 13:49:09
19 dood. 200 2010-09-25 21:53:38
20 Trypsonite 200 2010-10-04 13:30:22
21 coolwolf 200 2010-10-08 19:24:35
22 SomeFatMan 200 2010-10-17 05:53:33
23 addison_52 200 2010-10-17 20:40:11
24 enlil 200 2010-10-19 15:28:43
25 Hazai 200 2010-10-20 03:33:02
26 matherror 200 2010-10-21 01:29:45
27 SuicidopoliS 200 2010-10-27 08:32:03
28 m&ms 200 2010-11-07 00:24:49
29 200 2010-11-08 17:17:18
30 GFM 200 2010-11-12 07:46:00
31 Masterclavat 200 2010-11-15 09:00:56
32 Brutu 200 2010-11-18 09:15:45
33 leanny 200 2010-11-22 13:40:54
34 the_unknown 200 2010-11-27 08:10:00
35 SEREFKI 200 2010-12-03 19:10:58
36 nneonneo 200 2010-12-09 19:22:51
37 200 2010-12-11 22:43:10
38 Its.eko-sniper 200 2010-12-13 12:14:43
39 Tsukamoto 200 2010-12-29 03:47:40
40 200 2010-12-31 06:10:04
41 gurumao 200 2011-01-01 11:16:10
42 kyuzuryu 200 2011-01-17 06:33:59
43 Zamro 200 2011-01-26 12:23:43
44 cute_curly 200 2011-01-26 12:44:08
45 Aoi 200 2011-01-30 18:25:23
46 200 2011-02-17 13:43:01
47 starninja 200 2011-02-17 17:00:40
48 200 2011-02-17 19:29:54
49 pokkoro 200 2011-02-21 03:14:34
50 Jay~ 200 2011-02-22 17:49:33
51 OyofMidworld 200 2011-03-12 17:08:38
52 masamunemaniac 200 2011-03-14 05:09:14
53 Shido 200 2011-03-19 09:52:14
54 myrrid 200 2011-03-19 20:10:02
55 chatsalot7777 200 2011-03-25 02:24:28
56 Hikaru Maruyama 200 2011-04-07 17:49:01
57 Jay-Jay 200 2011-04-14 00:30:25
58 calvinmm 200 2011-04-14 09:10:43
59 200 2011-04-16 13:46:25
60 izomiac 200 2011-04-16 18:19:55
61 zen 200 2011-04-20 11:03:48
62 200 2011-04-22 23:27:21
63 Le Luffy 200 2011-05-01 17:19:25
64 lynx 200 2011-05-21 03:53:48
65 bloodmyrrh 200 2011-06-07 20:16:10
66 crimson_schwein 200 2011-06-26 18:04:10
67 jesielt 200 2011-07-03 02:57:34
68 Prismatic 200 2011-07-04 22:31:57
69 spherecircle 200 2011-07-13 22:53:23
70 Charm 200 2011-07-20 15:22:14
71 hawnken 200 2011-07-30 00:05:31
72 ocean 200 2011-08-01 12:23:28
73 Snight 200 2011-08-14 00:21:59
74 K-1 200 2011-08-19 22:52:30
75 Arke 200 2011-08-22 08:28:15
76 hizbullah666 200 2011-09-13 00:45:38
77 yachiru 200 2011-09-26 03:03:48
78 xerox3500 200 2011-09-29 04:54:51
79 200 2011-10-04 21:57:43
80 Kshatriya 200 2011-10-16 20:52:55
81 200 2011-10-26 02:40:11
82 netcher 200 2011-11-04 23:04:23
83 D364000 200 2011-11-10 09:03:48
84 Edmond 200 2011-11-11 11:13:40
85 stephen-- 200 2011-11-20 14:55:07
86 Cauchy 200 2011-12-03 18:47:30
87 The Zandman 200 2011-12-13 11:31:18
88 pierapist 200 2011-12-16 22:08:43
89 edogawaconan 200 2011-12-19 21:55:48
90 dementhia 200 2012-02-15 10:12:44
91 xaeder 200 2012-02-15 13:26:34
92 nomo 200 2012-04-28 22:41:38
93 shadowpaw666 200 2012-05-11 12:23:40
94 Licht 200 2012-05-30 21:05:24
95 chobster 200 2012-06-04 23:12:54
96 Dexmaster 200 2012-06-20 02:49:11
97 Erk 200 2012-06-24 16:48:05
98 Set 200 2012-07-12 06:41:31
99 Aeroace -_-" 200 2012-07-20 17:17:53
100 chocachuba 200 2012-08-07 08:38:19
101 reyz 200 2012-08-15 08:30:41
102 HolySwordRavelt 200 2012-08-25 17:40:33
103 ryo 200 2012-08-26 06:34:51
104 Bart13 200 2013-02-05 12:02:44
105 ytr 200 2013-02-20 13:46:25
106 analogman 200 2013-02-24 03:01:31
107 Aeika 200 2013-02-25 21:10:35
108 YAPXi 200 2013-03-04 03:10:25
109 Pioneer Plus 200 2013-03-15 21:46:25
110 hillarryous 200 2013-04-02 19:21:09
111 "Naru" 200 2013-04-03 06:21:36
112 carinae 200 2013-04-09 06:14:07
113 jaakaru 200 2013-04-21 14:21:23
114 yumichiaiyuri 200 2013-05-04 19:57:45
115 rudo664 200 2013-05-05 15:27:27
116 Play2X 200 2013-05-10 08:14:09
117 lando 200 2013-05-19 11:21:13
118 LanceR 200 2013-06-28 09:00:57
119 suminoe_ako 200 2013-07-13 10:11:44
120 alchemist_f 200 2013-08-01 07:29:35
121 Svetonio 200 2013-08-02 08:14:05
122 NBsible 200 2013-08-30 08:41:54
123 Hendry 200 2013-09-10 04:29:34
124 skritsch 200 2013-09-10 04:53:20
125 rezso11 rezso'11 200 2013-09-14 03:01:09
126 draconian196 200 2013-10-12 13:41:12
127 200 2013-11-15 20:22:52
128 Hydroxide 200 2013-11-19 15:51:49
129 youj 200 2013-11-20 01:29:38
130 Rangzz 200 2013-11-23 09:45:51
131 KADO 200 2013-11-27 06:37:28
132 mcsa 200 2013-11-27 07:26:23
133 UgN 200 2013-12-06 00:27:09
134 jasonbay13 200 2013-12-09 19:19:30
135 Kyung Jin 200 2013-12-26 03:43:48
136 easy 200 2014-01-01 19:53:10
137 Didit 200 2014-01-18 02:43:53
138 mike93 200 2014-02-09 00:51:31
139 HelloMello 200 2014-02-26 12:15:15
140 nexolute 200 2014-03-04 17:14:29
141 canif 200 2014-03-28 22:38:11
142 CarlosJGM 200 2014-04-10 05:29:11
143 Kuposan 200 2014-04-10 06:02:45
144 ishida639 200 2014-05-19 05:36:26
145 anisalsabila 200 2014-05-29 22:24:47
146 fadhlannm 200 2014-06-01 00:00:23
147 kuuderesshadow 200 2014-06-01 03:36:01
148 fazadina 200 2014-06-03 04:18:44
149 yansa 200 2014-06-04 02:16:25
150 Mahogra 200 2014-06-05 00:47:53
151 BlackFlashAslan 200 2014-06-05 00:48:35
152 merpatihitam 200 2014-06-05 02:45:42
153 dyanahaad_ 200 2014-06-05 20:55:54
154 Bob 200 2014-06-08 22:31:08
155 Fann Agustian 200 2014-06-11 03:40:32
156 eXtremeShippuuden 200 2014-06-14 12:47:51
157 The Sleeping Dead 200 2014-07-09 04:48:47
158 Arcueid 200 2014-08-26 20:10:19
159 silversoul 200 2014-09-17 05:40:22
160 effervescentstripes 200 2014-09-17 14:30:48
161 tom 200 2014-10-24 11:36:06
162 yumiko1122 200 2015-01-21 06:07:19
163 Alban 200 2015-02-03 08:18:38
164 Rei 200 2015-03-14 12:47:50
165 Lepidopterist 200 2015-07-17 21:13:30
166 harunakaze 200 2015-11-01 19:41:57
167 y@e 200 2015-12-18 11:40:13
168 PopularHellboy2 200 2016-01-13 09:40:58
169 Kuro 200 2016-01-16 11:14:17
170 Melancholy 200 2016-01-29 05:09:56
171 beebop :D 200 2016-10-19 23:51:17
172 paths 200 2017-01-18 22:28:43
173 Hadits 200 2017-01-19 18:32:56
174 LixLix 200 2017-02-03 13:36:00
175 gelyan 200 2017-08-12 18:25:39
176 Kitsune 200 2017-08-30 14:16:57
177 mew 200 2018-04-21 15:58:13
178 crtor4 200 2018-08-17 06:02:49
179 vermilion gore 200 2019-05-20 23:21:47
180 Bogdan 200 2020-04-24 06:43:25
181 MSquare 200 2020-11-08 10:11:20
Your answer (Capitalization, white space, and punctuation don't matter!)


Your code (if you wrote code) and feedback, please leave feedback!


Need help? Discuss this challenge here!
Copyright 2000-2025 Gendou | Terms of Use | Page loaded in 0.0050 seconds at 2025-11-09 09:07:17