22 Print Polyglot Pieces 2016-12-07T04:59:27.303
22 Is it a noun or not? 2017-08-12T18:57:07.803
22 Compressing the Atomic Ionization Energies 2018-02-07T17:43:00.493
22 Create a uniquely solvable crossword ... without clues 2019-09-18T13:26:31.040
21 Implement lazy lists, preferably in a language you don't know well 2011-05-01T06:31:58.643
21 Make the Matrix Digital Rain using the shortest amount of code 2014-01-03T10:25:13.263
21 Tower of Hanoi Sort 2014-04-01T05:26:15.113
21 The Star-Spangled Code Challenge 2014-05-30T06:48:25.223
21 Horror Movie Search Party 2014-08-16T09:32:50.137
21 Sort a List With Swaps and Pops 2014-10-31T07:43:30.290
21 Find the largest fragile prime 2014-11-19T16:28:11.047
21 Distinguish between Masculine and Feminine Nouns in French within 100 characters 2014-12-05T22:41:23.150
21 Lossy ASCII art compression 2015-07-16T06:01:18.370
21 A game of atomic proportions 2016-10-11T09:16:20.067
21 Transposes and Diagonals 2017-07-01T09:06:40.867
21 Fruit bagging factory 2018-04-16T16:41:55.133
21 Smallest Fibonacci Multiples 2019-12-10T22:42:51.007
20 1P5: Word Changer 2011-05-05T18:21:20.110
20 Efficient error-free* encoding 2014-06-12T10:27:28.047
20 Build a pair of spies that will throw stones into a river 2014-06-12T23:26:10.767
20 Detect Duplicate Questions 2014-09-12T20:05:04.743
20 Restricted Polyglot 2014-09-27T23:28:32.337
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 Optimize the Scralphabet 2015-05-15T12:52:40.657
20 Take It or Leave It II: A Game Show for Computers 2015-08-03T07:00:04.587
20 Fun with flags! 2016-03-26T19:35:54.187
20 Diff compression 2016-08-02T16:53:54.283
20 Piet (Mondrian)'s Puzzle 2016-12-03T04:14:44.643
20 Count the Matchsticks 2018-03-23T17:49:40.573
20 Traceless Busy Beaver 2018-09-09T18:11:51.033
20 Hexagonify™ a String Block 2019-12-15T03:40:21.277
19 Print a random maze 2011-01-30T12:42:18.280
19 How to determine if a number is odd or even without mod -or- bitwise operations? 2011-04-28T03:07:32.910
19 What's the ugliest line of R code that still parses? 2011-11-29T19:18:18.087
19 Find largest prime which is still a prime after digit deletion 2013-02-21T14:27:06.763
19 Dungeon Construction Set 2013-12-15T03:32:49.797
19 Sort-a-number. Sorta 2014-03-28T23:10:11.713
19 2048 Bot Challenge 2014-04-02T15:53:33.483
19 Mastermind strategy 2014-06-17T12:10:24.477
19 Optimize paper folding to mitigate inkblots 2014-07-10T09:44:30.173
19 Brainf*** subprograms with unique outputs 2015-03-30T13:27:36.117
19 Print the QWERTY keyboard using keys that are as close together as possible 2015-12-27T02:11:06.560
19 Chuck Norris vs Travelling Salesman 2016-09-05T03:20:35.143
19 Make a regex polyglot 2016-12-03T07:38:36.137
19 Meta radiation hardener 2017-02-23T02:23:34.377
19 Chess Analysis with Limited Information 2017-03-21T15:37:38.423
19 Anaglot Polygrams 2017-05-09T18:56:29.373
19 Most efficient cubifier 2017-07-21T17:07:14.213
19 Cops and Robbers: Redacted Primality (Cops' Thread) 2018-02-03T04:29:14.897
19 Modified Boggle Checker, with Modified Boggle-able Code 2018-05-20T23:03:43.623
18 Fake error message 2011-04-26T23:21:03.147
18 Build a small and balanced mobile 2011-04-28T05:18:20.167
18 The Strange Unsorting Machine for Nefarious Purposes 2012-10-24T07:56:44.773
18 Find The Wordiest Combination Lock 2013-01-21T06:53:56.353
18 Draw A Snowflake 2014-12-18T19:58:36.523
18 Finding all-but-one matches 2015-02-27T14:54:25.110
18 Boggle Board Compression 2015-06-05T19:53:56.830
18 Minimal Word Search 2016-08-12T14:50:51.410
18 Output a program that outputs a program ... that outputs PPCG 2017-01-24T22:21:29.540
18 All your base 97 are belong to us 2017-08-15T08:50:03.243
18 Advent Challenge 1: Help Santa unlock his present vault! 2017-12-01T15:30:10.393
18 Tetris strategy 2018-02-17T16:26:59.520
18 Blind Random Sort 2018-10-17T03:50:27.807
18 Write the longest period iterating quine bounded by 500 bytes 2019-02-11T01:07:19.290
17 Write Buggy Code 2011-04-26T05:31:38.857
17 Compute the CRC32 table at compile-time 2011-07-29T15:31:41.447
17 Regex validating regex 2011-08-29T23:06:39.147
17 Write a program that is valid after circular character shift 2012-06-02T17:25:39.143
17 Write a java code to detect the JVM version 2012-12-01T21:05:46.613
17 C: replace AES FIPS-197 SubBytes table by constant-time code 2012-12-21T17:40:24.530
17 Compact a Befunge program 2013-01-01T23:39:53.280
17 Monopoly Compression 2014-05-01T16:20:48.260
17 Reverse order of words in a string inplace 2014-05-11T14:08:39.473
17 Travelling Salesman 2014-06-16T21:45:46.477
17 Maximum number of PEP8 violations in a single line 2014-07-15T17:22:05.897
17 Create a FizzBuzz compiler 2014-07-31T13:20:32.720
17 Program a 2048 AI using an existing Framework 2014-09-24T23:39:12.653
17 Choose-Your-Own-Language Code 2014-10-27T22:54:50.290
17 Smallest Bytecode Interpreter/VM 2014-11-23T04:18:02.753
17 Building a long chain of words 2015-01-25T12:14:41.013
17 The Jigsaw Code Puzzle 2015-01-26T11:22:08.260
17 Help our robots reach the teleporter 2015-03-25T04:38:41.757
17 Finding sum-free partitions 2015-11-09T18:18:12.623
17 What's the Language? 2016-01-23T05:28:30.280
17 Good Old Suffix Vector 2016-03-10T14:31:21.380
17 Thwart Lepton compression 2016-07-15T00:06:53.367
17 Fastest tweetable integer factorizer 2017-07-08T19:10:29.513
17 Removing points from a triangular array without losing triangles 2018-09-19T21:31:00.307
17 Rubik-sorting a matrix (a.k.a. the torus puzzle) 2018-09-26T08:17:46.587
17 Number of distinct tilings of an n X n square with free n-polyominoes 2019-10-07T19:29:27.657
16 Markov Chain Beatbox Generator 2011-09-25T05:20:46.010
16 Best Scoring Boggle Board 2012-04-26T19:56:06.880
16 win a virtual fencing match (against your fellow stack exchangers) 2012-09-07T21:56:48.327
16 Insanity Check Program 2014-01-22T15:28:47.000
16 Fastest player for Dots and Boxes 2014-06-06T21:25:18.660
16 Construct n-gons with a ruler and compass 2014-10-09T14:28:24.770
16 Build a minimum-clue Sudoku unsolver 2015-04-07T00:51:27.053
16 Princely Prefix by a Program in Pattern 2015-04-28T12:18:49.137