189 The Programming Language Quiz 2015-08-17T06:42:46.630
142 Unscramble the Source Code 2014-11-04T19:30:25.473
94 Will it halt? (Cops) 2017-07-24T15:46:45.840
86 Create a programming language that only appears to be unusable 2015-10-26T12:22:58.400
84 Can you outgolf me? (Cops section) 2016-08-06T10:27:50.090
76 Cops and Robbers: Reverse Regex Golf 2014-10-14T08:41:45.363
62 Make your language *mostly* unusable! (Cops' thread) 2017-07-18T23:57:26.807
61 The Programming Language Quiz, Mark II - Cops 2018-02-06T18:55:24.897
60 Two Makes All The Difference - Cops 2015-08-11T08:11:19.767
60 The Mystery String Printer (Cops) 2015-10-11T02:37:44.543
51 Significant Whitespace: Cops 2016-12-14T19:30:15.213
46 Will it halt? (Robbers) 2017-07-24T15:48:37.750
45 Polyglot Anagrams Cops' Thread 2016-11-09T14:36:05.490
45 PPCG Jeopardy: Cops 2016-11-18T19:10:15.417
44 Unscramble the Source Code [robber thread for cracking attempts] 2014-11-04T19:45:25.013
44 Can you outgolf me? (Robbers section) 2016-08-06T10:29:09.393
40 Cops: Make a regex - Make a snake 2017-03-08T13:57:25.487
39 Find the program that prints this integer sequence (Cops' thread) 2016-04-09T00:54:10.967
38 Hide the Needle in the Haystack (Cops) 2017-10-07T14:13:19.783
37 Cops - square times square root 2017-04-03T12:47:02.247
37 Overlapping Polyglots 2018-09-09T05:22:46.200
37 Cops: The Hidden OEIS Substring 2019-07-10T13:58:33.450
36 Code ladder, Cops 2016-11-12T12:43:55.173
35 Hidden Inversions (Cops' Thread) 2017-01-16T14:17:21.913
34 Jumblers vs Rebuilders: Coding with Tetris Bricks 2014-10-22T03:54:02.557
34 Cryptographic hash golf 2015-05-31T14:44:50.913
33 Restricted mini challenges Cop's Thread 2017-07-27T16:42:10.187
32 I'm thinking of a number (Cop's Thread) 2017-08-28T17:14:25.093
31 Lockers vs. Crackers: The Five-Element Sequence 2014-08-25T07:14:05.593
31 Make your language *mostly* unusable (Robber's thread) 2017-07-19T00:00:32.123
29 Two Makes All The Difference - Robbers 2015-08-11T08:13:45.793
29 The Programming Language Quiz, Mark II - Robbers 2018-02-06T18:56:56.410
28 Hardcoding the Cops and Robbers (Cops) 2018-06-29T15:07:41.120
27 Recover the mutated source code 2014-12-29T02:35:20.863
27 Create a programming language that only appears to be unusable (Robbers' thread) 2015-10-26T12:25:36.943
27 Change the Code, Change the Sequence: Cops 2017-02-13T17:22:14.660
27 Anagram Quines (Cops' Thread) 2017-02-24T17:41:43.810
27 Abstract Rewriting Challenge (Cops) 2018-03-02T23:59:14.600
26 The Mystery String Printer (Robbers) 2015-10-11T02:38:50.903
26 Printing ascending ASCII, Cops 2015-12-26T11:52:40.000
25 The Bowlers-Golfers Fraction War 2014-09-14T13:12:29.277
24 Code ladder, Robbers 2016-11-12T12:45:00.623
23 Polyglot Anagrams Robbers' Thread 2016-11-09T14:38:20.293
23 Reversed Engineered from Uniqueness (Cop's Thread) 2017-11-10T02:45:44.077
23 Robbers: The Hidden OEIS Substring 2019-07-10T13:59:34.743
22 Code Crosswords 2014-10-25T03:38:29.543
22 Quine Anagrams! (Cops' Thread) 2016-11-11T17:45:04.773
20 Find the program that prints this integer sequence (Robbers' thread) 2016-04-09T00:57:38.500
20 Robbers: Crack the regex - Make a snake 2017-03-08T13:58:26.740
19 Seeking Secret Swapping Sequences 2017-08-03T14:42:00.200
19 Cops and Robbers: Redacted Primality (Cops' Thread) 2018-02-03T04:29:14.897
18 Cops and Robbers bowling (Cops) 2015-01-15T18:30:10.433
18 Find the Interwoven Source Codes (Cops) 2015-11-22T22:48:22.677
18 PPCG Jeopardy: Robbers 2016-11-18T19:11:16.863
18 Significant Whitespace: Robbers 2016-12-14T19:32:48.610
18 Robbers - square times square root 2017-04-03T12:45:28.363
18 Codebreakers and Codewriters 2017-07-19T18:12:43.117
18 Find the Needle in the Haystack (Robbers) 2017-10-07T14:14:40.300
17 Two-Many Outputs 2014-08-31T08:50:44.447
16 Hidden Inversions (Robbers' Thread) 2017-01-16T14:19:54.043
16 "Hello, World!" (Cops' thread) 2017-08-05T17:21:06.367
16 Levenshtein distance & OEIS (Cops) 2017-11-02T14:03:23.480
15 Change the Code, Change the Sequence: Robbers 2017-02-13T17:26:39.243
15 Lost in translation 2017-02-15T18:28:39.160
15 Cheapo Enigma machine (Cops) 2017-04-22T10:13:12.660
15 Restricted mini challenges Robbers Thread 2017-07-27T16:43:10.317
15 This challenge is about recursion (Cops' thread) 2018-03-06T10:19:50.820
13 Find the Interwoven Source Codes (Robbers) 2015-11-22T22:59:32.593
13 Printing ascending ASCII, Robbers 2015-12-26T11:53:41.933
13 Golfing Chain (Cops' Thread) 2018-06-06T15:19:43.447
12 Cryptographic hash golf (robbers) 2015-05-31T14:45:51.143
12 Solving Secret Swapping Sequences 2017-08-03T14:47:02.100
12 Hardcoding the Cops and Robbers (Robbers) 2018-06-29T15:10:07.893
11 Code Crosswords - Solutions 2014-10-25T03:40:16.437
11 Cyclic Polyglot Challenge (Cops) 2017-07-04T21:17:40.953
11 "Hello, World!" (Robbers' thread) 2017-08-05T17:22:10.613
11 Levenshtein distance & OEIS (Robbers) 2017-11-02T14:04:31.547
11 Reversed Engineered from Uniqueness (Robber's Thread) 2017-11-10T02:50:46.487
10 Jumblers vs Rebuilders: Coding with Tetris Bricks - Area for Rebuilder Answers 2014-10-22T19:16:47.593
10 Cops and Robbers bowling (Robbers) 2015-01-15T18:33:33.970
10 Anagram Quines (Robbers' Thread) 2017-02-24T17:42:44.330
10 Stealing sequences: Cops 2017-06-23T16:54:18.243
10 Transformers in Disguise (Cops' Thread) 2018-11-06T05:58:46.670
9 Cops and Robbers: Redacted Primality (Robbers' Thread) 2018-02-03T04:30:15.933
9 Abstract Rewriting Challenge (Robbers) 2018-03-03T00:03:46.263
9 Escape from the tarpit (Cops) 2018-04-15T01:04:41.730
8 Recover the mutated source code (for robbers) 2014-12-29T02:37:38.453
8 Quine Anagrams! (Robbers' Thread) 2016-11-11T17:46:17.303
8 Cheapo Enigma machine (Robbers) 2017-04-22T10:14:21.237
8 Riffle shuffle a string - Cops 2018-01-01T02:45:53.440
8 Golfing Chain (Robbers' Thread) 2018-06-06T15:22:11.587
8 Modified Boggle-able Code and Output: CnR Edition (Cops) 2018-10-04T23:30:41.597
7 Cyclic Polyglot Challenge (Robbers) 2017-07-04T21:16:37.487
7 I'm thinking of a number (Robber's thread) 2017-08-28T17:20:57.823
7 Riffle shuffle a string - Robbers 2018-01-01T02:46:55.363
6 The greedy regex (cops) 2017-08-29T01:09:31.210
6 Escape from the tarpit (Robbers) 2018-04-15T01:06:46.603
5 Stealing sequences: Robbers 2017-06-23T16:55:19.090
4 Enterprise Quality Code Prime Sieve 2016-08-21T22:02:52.733