311 Upgoat or Downgoat? 2016-02-09T23:30:34.670

50 Build a random number generator that passes the Diehard tests 2013-01-25T15:04:06.820

44 There can be only 1! 2016-09-11T21:16:06.140

41 Predict whether a message will be starred or not in 50 bytes 2016-01-17T21:53:52.930

34 Create a Flood Paint AI 2014-04-23T23:13:35.490

33 Voice recognition: "Yes" or "No"? 2014-09-01T09:54:02.270

31 Build a golfing language with me 2018-04-13T09:21:39.250

27 Where's Blackhat? 2018-07-23T16:30:32.483

25 Domain Name Appraisal 2016-07-04T23:56:01.413

23 Guess the language 2016-07-09T00:34:08.140

22 Is it a noun or not? 2017-08-12T18:57:07.803

20 Fun with flags! 2016-03-26T19:35:54.187

19 Chess Analysis with Limited Information 2017-03-21T15:37:38.423

17 What's the Language? 2016-01-23T05:28:30.280

16 Build a minimum-clue Sudoku unsolver 2015-04-07T00:51:27.053

16 Who said that? 2016 Presidential election 2016-03-02T01:58:19.510

15 Build a top-front-side puzzle solver 2015-03-28T04:55:42.570

15 Mathematical Expression Showdown! 2017-08-20T15:07:13.577

15 Strategic Vanishers 2018-01-04T16:24:00.890

14 Let's write a Minifier 2017-12-20T02:44:49.140

14 Bridge the Gaps 2019-08-05T14:36:54.993

13 Text to Brain-Flak 2018-03-07T18:48:00.800

12 Build a Nonographic Magnitude Optimizer™ 2016-01-15T19:15:46.197

12 Combinatory Conundrum! 2017-01-07T14:48:55.020

11 Reconstruct a missing RGB channel 2016-05-03T07:15:47.870

11 Print a specific value in the Wythoff matrix modulo 2 2016-10-07T17:33:50.550

11 Remove the Salutations 2017-05-30T11:06:50.340

11 The Onion, or Not The Onion? 2018-08-15T23:02:45.850

10 Find the shortest way to advance a counter to a certain number 2016-04-02T02:38:51.417

10 Captcha Capture 2018-11-03T22:25:44.970

8 The branch predictor challenge 2016-01-20T21:16:07.707

8 Sort a list of unknown values with the least amount of comparisons 2016-07-20T12:23:00.200

7 Build a program that creates a minimal one-ohm resistor diagram for a given resistance 2014-02-09T15:37:57.627

1 Is it a bird, is it a plane? 2017-05-03T10:05:37.163