151 Hyperprogramming: N+N, N×N, N^N all in one 2016-09-11T14:30:05.850

130 Hello, World! (Every other character) 2017-06-26T20:07:15.810

130 I double the source, you double the output! 2017-07-15T15:14:05.327

117 Write a program that always outputs "2012" - even if it's modified! 2012-01-02T15:54:09.203

105 What are the five most powerful characters in your language? 2016-12-09T08:14:50.057

100 Print a Negative of your Code 2014-11-29T18:51:58.813

77 From Programming Puzzles to Code Golf 2017-04-28T13:14:24.797

74 Error 404: Character Not Found 2016-12-13T21:14:48.550

68 Fault-Tolerant Hello World (a.k.a. the Interview) 2013-04-17T20:10:26.347

66 Powerprogramming: O(1^N), O(N^1), O(2^N), O(N^2) all in one 2017-05-04T04:14:41.493

64 Write a Rectangular Program that Outputs the Number of Times it was Rotated 2014-07-08T21:50:11.567

55 Significant Whitespace 2014-12-09T15:58:24.670

49 Third time the charm 2018-03-12T13:24:54.130

47 Make a code square with your favorite word 2014-07-30T07:42:30.767

47 Sierpinskified Code 2015-02-25T11:21:39.280

47 Coding Around The Clock 2016-04-26T02:55:34.547

45 Create a square of increasing size by replicating the initial code 2018-02-02T12:14:49.237

45 A Chiral Puzzle 2018-09-11T16:19:46.423

43 Code that runs the Game of Life on itself 2014-08-09T15:42:35.327

43 I reverse the source code, you negate the output! 2019-09-17T13:38:31.320

41 Program template for printing *any* string 2016-11-24T00:45:52.910

41 Shifting-Oriented Programming 2018-03-15T13:23:13.490

40 40 Numbers in 9 Bytes 2015-07-08T19:11:44.270

40 A well linked challenge 2019-02-03T00:18:11.387

40 I reverse the source code, you negate the input! 2019-09-17T19:32:25.203

38 Hide the Needle in the Haystack (Cops) 2017-10-07T14:13:19.783

37 Prime Up your code 2017-08-23T22:49:49.163

37 Is the matrix centrosymmetric... and so is the code? 2018-07-16T20:24:37.490

36 Letter, Number, Symbol, Space, Repeat 2017-02-26T11:42:08.820

36 Double-time is not double time 2017-07-17T08:22:47.847

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

33 Programming Tetris Blocks (Literally) 2015-04-11T06:45:16.480

33 Multiplication by Self-Modification 2015-05-25T16:22:32.333

33 I transpose the source code, you transpose the input! 2019-09-22T12:08:53.417

32 One hundred passwords 2015-02-10T22:12:40.880

32 Figure and Ground 2016-11-27T18:25:18.050

32 Double it your way 2019-09-10T12:14:55.383

31 Write A Program That Outputs Its Mirror Level 2015-05-28T15:49:30.797

31 Build a twisted "Hello world!" 2016-02-02T17:50:59.333

31 Inverse function 2016-02-06T11:26:25.383

31 2 Cats in a Quine 2018-06-01T16:21:14.317

31 What did we forget? 2018-09-05T22:06:29.217

31 Make The Finest Magic Code Square 2020-01-22T21:34:27.353

30 Join N copies of a snippet to produce N^2 characters 2015-02-05T06:05:22.070

30 Beatles Songs and Hexagons 2015-09-18T01:28:42.913

29 Source Code Metamorphosis 2015-10-07T19:51:52.613

29 Concatenative counting 2017-10-31T18:20:26.190

29 Make a Geiger Counter 2018-08-04T03:01:40.920

28 Program your favorite phrase 2014-08-03T05:04:51.040

28 Take a stand against long quine lines 2018-02-19T12:16:28.810

27 Radioactive Quines 2014-09-13T05:42:32.393

27 Hyper about quines 2016-10-04T22:11:14.077

26 Create a rotating quine 2012-03-08T15:53:03.423

25 Shape Identifying Program 2018-03-23T08:30:20.410

25 Detect Perfect Pairings 2018-06-25T16:57:43.097

25 Internal Truth Machine 2020-01-21T13:59:50.567

24 XOR encrypt your programs with the source of other programs 2015-05-30T05:29:37.007

24 Running Merge Conflict 2017-02-23T07:19:04.090

24 Cardinal Code Challenge 2017-08-04T16:38:46.027

24 Pass on your radiation 2019-12-14T15:43:51.687

23 Reuse your code! 2017-04-02T15:53:41.200

23 Take a stand against long lines 2017-06-02T21:17:56.603

22 Write a square program that outputs the number of times it has been "unrolled" 2014-10-18T06:46:50.593

22 Code Crosswords 2014-10-25T03:38:29.543

22 Onion Programming 2014-10-30T07:38:10.407

22 Mutual Negative Quines 2014-12-02T04:16:02.107

22 Caesar-Cypher-Mania 2014-12-17T11:40:18.947

22 I shift the source code, you shift the input! 2019-12-10T20:27:44.723

21 Reading Code in 8 Ways to Output 8 Numbers 2015-02-21T10:46:53.680

21 Pure Sourcery - Shaping programs that output the digits 0 through 9 2015-03-03T08:35:50.497

21 Compile Regexes (By Substitution) 2015-11-17T14:42:10.640

21 Transposes and Diagonals 2017-07-01T09:06:40.867

20 The Fatal Error Challenge 2014-11-09T15:22:52.803

20 Anagramming Stack Exchange question titles into programs 2015-02-04T10:27:09.703

20 90° Self-Rotating Program 2015-11-11T04:21:24.727

19 The reversible reverser 2013-07-27T20:02:27.313

19 Run the Nth characters to get N 2014-08-19T02:53:32.363

19 Chuck Norris vs Travelling Salesman 2016-09-05T03:20:35.143

19 Swap program halves to test divisors 2018-03-17T14:03:02.250

19 The repetitive byte counter 2018-03-23T19:10:05.620

19 I multiply the source, you (probably) multiply the output! 2019-09-06T13:19:41.623

18 Print a Symbolic Negative of your Code 2015-10-14T16:52:25.023

18 "Hello, World!" (Every other character, Part 2) 2017-07-02T03:15:55.033

18 Find the Needle in the Haystack (Robbers) 2017-10-07T14:14:40.300

18 Russian Nesting Quine 2018-02-02T09:11:28.583

18 Build a half cardinal cyclic quine 2018-02-28T20:14:30.967

18 I reverse the source code, you reverse the input! 2019-09-22T07:31:07.447

17 Choose-Your-Own-Language Code 2014-10-27T22:54:50.290

17 The Jigsaw Code Puzzle 2015-01-26T11:22:08.260

17 Normal and visual string reversion 2016-05-19T04:20:30.097

17 Write a program that outputs the number of times it has been run 2016-08-30T01:05:10.243

17 Make an interweaving quine 2016-12-28T05:18:22.397

16 Princely Prefix by a Program in Pattern 2015-04-28T12:18:49.137

16 Self-Mutilating Program 2015-10-07T18:32:54.120

16 Write a program that always prints N when it is shifted N times up the ASCII alphabet 2016-06-09T08:27:47.893

16 Hidden Inversions (Robbers' Thread) 2017-01-16T14:19:54.043

14 Deranged Rearrangements 2018-02-08T20:56:30.347

14 Error-detecting Self-repairing Program 2019-02-22T19:21:36.510