1017 Build a working game of Tetris in Conway's Game of Life 2013-06-18T03:08:22.103
478 Build a digital clock in Conway's Game of Life 2016-08-04T19:05:38.507
374 Build a Compiler Bomb 2016-01-11T23:50:07.503
311 Upgoat or Downgoat? 2016-02-09T23:30:34.670
301 Write Moby Dick, approximately 2018-01-09T09:25:31.847
280 I need a program where the user inputs an array of doubles and the program outputs the array sorted 2013-12-27T09:17:45.597
243 Paint Starry Night, objectively, in 1kB of code 2016-01-23T15:16:57.587
229 Without using numbers, get the highest salary you can. But don't exaggerate! 2018-08-25T14:34:56.960
183 What is the smallest positive base 10 integer that can be printed by a program shorter (in characters) than itself? 2015-12-28T14:14:40.930
158 How high can you count? 2017-06-03T12:59:09.773
115 Largest Number Printable 2014-01-08T23:13:21.950
114 Implement the Game of Life on Anything but a Regular Grid 2014-08-06T13:50:15.243
113 Lab Rat Race: an exercise in genetic algorithms 2015-01-19T22:55:41.057
113 Fewest (distinct) characters for Turing Completeness 2017-02-20T15:18:10.637
105 What are the five most powerful characters in your language? 2016-12-09T08:14:50.057
103 Generate the longest error message in C++ 2011-04-04T16:13:33.787
102 Source code ecological footprint 2015-09-25T11:08:49.607
95 One OEIS after another 2017-07-21T15:00:01.030
94 Unique is Cheap 2017-06-19T16:51:53.083
93 The Versatile Integer Printer 2015-12-03T13:20:41.150
92 When was this language released? 2016-09-29T03:04:36.210
92 Build a Markdown bomb 2018-09-19T19:15:36.600
87 Eww, those bytes are gross 2019-02-25T10:20:28.873
85 Find an Illegal String 2017-07-20T04:35:53.570
84 Can you outgolf me? (Cops section) 2016-08-06T10:27:50.090
82 Counting Grains of Rice 2014-11-02T02:42:46.303
78 -ENDED- Do something that looks like something else 2013-04-23T07:08:03.090
77 Largest number in ten bytes of code 2014-06-13T13:33:58.633
73 Tweetable hash function challenge 2016-04-01T11:03:04.587
72 Hello World in Multiple Languages 2017-10-28T13:39:15.760
71 The alphabet in programming languages 2011-04-18T20:41:31.673
71 2016 Time Capsule String: How Versatile Is Your Language? 2017-01-03T05:18:33.337
69 Rube Goldberg Hello World 2016-06-22T14:17:08.300
68 Fault-Tolerant Hello World (a.k.a. the Interview) 2013-04-17T20:10:26.347
66 Write a polyglot that prints the language's name 2012-09-10T06:23:51.743
65 9 Hole Challenge 2013-12-29T19:52:05.340
59 Encode Images into Tweets (Extreme Image Compression Edition) 2013-04-06T21:18:42.600
56 Evolution of OEIS 2015-04-26T14:28:48.753
55 Exit Code Golfing 2017-01-18T00:26:37.930
54 Add a feature to a programming language 2011-02-20T06:49:07.463
54 ASCII Art Calendar 2014-08-12T02:08:56.720
54 Build a fewest-moves freecell solver 2015-01-03T18:47:25.657
53 Goodbye Cruel World! 2017-06-08T13:09:24.210
52 Determine your language's version 2017-08-16T04:26:47.137
51 yes is 91 lines long 2014-12-17T13:32:06.243
51 1 character typo generating most error messages from C++ compilation 2015-06-12T22:27:38.260
50 Build a random number generator that passes the Diehard tests 2013-01-25T15:04:06.820
49 Shortest universal maze exit string 2015-07-17T16:09:56.477
49 TryItOnquine Challenge 2017-07-19T16:33:50.280
48 mastermind horse battery staple 2014-08-27T16:23:37.013
48 First code golf decathlon 2015-06-24T20:19:31.000
48 "As we travel the universe..." 2018-12-05T14:05:04.670
47 Generate the Stack Overflow logo 2012-01-07T10:47:23.913
47 Let's Judge Some Books By Their Covers 2014-11-11T05:31:45.507
45 Minimal keystrokes needed to type a given text 2014-03-06T02:27:33.220
44 There can be only 1! 2016-09-11T21:16:06.140
43 Write the shortest program that generates the most compiler warnings and errors 2012-05-12T14:05:28.097
43 (Re)Implementing Tetris 2013-04-09T07:23:02.643
43 Rearranging Words 2015-06-03T16:58:35.727
43 A Programming Puzzle of Mode Golf 2017-12-28T19:47:22.297
42 What's the shortest contiguous subset of ASCII you need to output the rest? 2014-08-05T22:13:28.320
42 Surprise Party for Brain-Flak 2017-04-30T13:18:37.153
41 Write a Quine in Plain English 2015-02-26T09:37:31.793
41 Polyglot the OEIS! 2017-08-06T18:11:49.887
41 Shifting-Oriented Programming 2018-03-15T13:23:13.490
41 Reserved JavaScript 2018-04-03T23:05:36.413
40 40 Numbers in 9 Bytes 2015-07-08T19:11:44.270
40 Holy Hole In A Donut, Batman! 2015-07-22T13:54:03.980
40 Difference should make no difference 2015-09-29T17:43:38.663
40 What will you bring for Thanksgiving? 2016-11-19T16:46:14.247
40 Sharing (characters) is Caring! 2017-01-09T19:14:10.043
39 Smallest chess board compression 2014-01-25T23:06:56.263
39 Hunt the Wumpus 2014-04-21T17:47:45.403
39 To Vectory! – The Vector Racing Grand Prix 2014-06-26T13:47:41.400
39 Programming with a Sporadic Shift Key 2014-10-17T04:50:22.627
39 Adding Numbers with Regex 2015-03-09T10:47:27.170
39 Code close to the challenge: Sum of integers 2015-07-23T00:45:05.183
39 Radiation Hardened Quine 2015-09-08T02:05:09.723
38 Make a slow error quine maker! 2015-05-30T03:51:58.813
38 Wait, what language is this? 2018-01-21T18:48:15.630
37 Palindromic palindrome checker 2011-03-26T12:44:21.377
37 Executable haiku that outputs a haiku 2012-05-08T14:29:28.373
37 Overcoming cluster size 2015-09-15T03:52:20.467
37 Hast Thou Slain the Jabberwock? 2018-03-02T20:50:45.887
37 Is the matrix centrosymmetric... and so is the code? 2018-07-16T20:24:37.490
37 Cops: The Hidden OEIS Substring 2019-07-10T13:58:33.450
36 Write the longest sentence using keywords of a programming language 2013-01-09T03:20:35.197
36 Domino Circuits 2014-08-18T12:54:29.150
36 Program a Racing Car 2014-12-06T07:27:26.907
36 Remapping ASCII 2015-09-14T14:24:25.363
35 Sudoku Compression 2014-11-15T00:26:23.360
35 Let's make a word-search! 2015-09-08T19:25:26.180
35 The PPCG Handicap System 2016-02-04T20:02:24.983
35 Code-generator with unique characters 2018-05-28T10:52:26.440
34 Rubik's Revenge 2013-07-12T17:33:52.453
34 Create a Flood Paint AI 2014-04-23T23:13:35.490
34 How high can you go? (A coding+algorithms challenge) 2014-04-30T20:47:41.673
34 Build a one-word search generator 2015-06-13T05:33:06.100
34 Generate Brainfuck for the numbers 1–255 2019-08-11T02:07:09.917