22 Is it a noun or not? 2017-08-12T18:57:07.803
22 Determine if a Graph is Toroidal 2017-08-25T18:36:42.490
22 Is it a pleasing number? 2017-12-17T20:31:20.083
22 Verifying a horizontal ASCII pet snake 2018-02-22T01:37:43.257
22 Is this a consecutive-prime/constant-exponent number? 2018-05-16T15:36:56.327
21 Determine if a polygon is convex 2011-04-19T04:31:38.573
21 Find whether a number is happy or not? 2011-04-25T17:54:11.833
21 Create a sudoku solution CHECKER 2014-02-28T20:05:06.660
21 2D Collision Detection 2014-10-08T11:48:32.067
21 Are these trees isomorphic? 2015-11-10T16:20:33.567
21 Is this a submatrix? 2016-03-09T18:56:37.573
21 Is my number a de Polignac number? 2017-06-30T15:18:16.183
21 Do the circles overlap? 2017-07-26T20:42:07.293
21 Is this a valid Takuzu board? 2017-09-01T10:20:50.410
21 Is the matrix rank-one? 2017-09-23T00:56:02.890
21 Is the group cyclic? 2017-09-24T18:40:44.693
21 Is it a substring of itself? 2017-11-14T15:55:41.097
21 Visible Dice Faces 2017-12-04T20:29:37.827
21 Determine Superabundance 2017-12-19T13:51:34.913
21 VEVO User Account Checker 2017-12-21T10:28:34.413
21 Is my number Unique 2017-12-23T17:50:19.137
21 Compare two numbers given as strings 2018-01-09T10:23:22.390
21 Is this a straight flush? 2018-07-26T18:51:39.300
21 Is this a BST pre-order traversal? 2018-10-19T08:03:33.070
21 School moving out (Day 1) 2019-02-06T13:46:51.303
21 Congruent Numbers 2019-04-26T18:42:53.933
21 Check the validity of a 10-digit telephone number 2019-11-04T21:38:30.347
21 Can I join the music box? 2020-02-08T08:21:30.513
20 Can maze be solved? 2014-12-23T13:21:39.620
20 One goes up, the other comes down 2015-10-13T18:26:11.243
20 Bracket balancing 2015-12-02T10:50:34.890
20 Numpad Word Search 2016-12-04T11:23:40.920
20 Is it within the Cantor set? 2017-02-01T06:35:59.987
20 Connect Four Validator 2017-04-21T00:49:29.760
20 Determine if an Array contains something other than 2 2017-05-13T07:40:01.063
20 Does it repeat? 2017-06-10T10:10:23.787
20 Am I an Automorphic Number? 2017-06-24T18:54:09.697
20 Are there N consecutive occurrences of a number in a row/column in a matrix? 2017-06-27T17:59:20.163
20 Are these identifiers equivalent? 2017-07-28T01:53:11.083
20 Predict a Collision: Will the robber get away? 2017-08-11T20:06:23.787
20 Are the lists divisible? 2017-08-27T18:39:22.900
20 Check if all non-zero elements in a matrix are connected 2018-01-30T10:40:56.090
20 Is this a truncated triangular number? 2018-03-05T19:05:43.213
20 Can You Spell This Word With These Dice? 2018-05-03T05:09:15.170
20 Upper or Lower Wythoff? 2018-06-15T13:18:13.073
20 One line Keyboard 2018-10-10T08:39:03.370
20 Am I being run backwards? 2019-11-08T23:18:36.973
20 Check if simple regex matches string 2019-12-14T20:09:09.947
20 Are They Similar Polygons? 2020-02-13T17:03:27.903
19 Refined Partitions 2015-06-15T12:09:37.433
19 Determine the winner of a game of War 2016-06-06T09:18:40.423
19 Are these lists equal? 2017-04-20T18:18:42.183
19 Does this line pass through that square? 2017-06-23T10:11:35.847
19 Is this a losing square? 2017-08-17T16:56:20.837
19 Does it oscillate periodically? 2017-10-26T13:35:20.863
19 Uh, is it a haiku? 2017-12-31T21:53:28.043
19 Is it a shuffle? 2018-01-02T15:48:33.933
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 Detect Rectangular Text with Rectangular Code 2018-05-02T13:25:31.040
19 Modified Boggle Checker, with Modified Boggle-able Code 2018-05-20T23:03:43.623
19 Determining Yes or No? 2018-05-22T15:06:16.940
19 Socket - Plug compatibility 2018-07-15T16:54:21.273
19 Is the Matrix Positive-Definite? 2018-09-23T11:47:44.397
19 How fast am I vrooooming? 2018-11-02T18:29:09.540
19 Is this quadrilateral cyclic? 2018-11-17T19:52:53.533
19 Match Roman Numerals 2019-04-11T12:43:14.013
19 Do you make me up? 2019-10-25T21:20:35.743
18 Finding the Deadlock 2015-05-23T19:39:45.770
18 Alignment on Triangular Grids 2016-01-09T13:57:23.783
18 Is this number random? 2016-03-05T07:07:06.997
18 Lossy or Lossless? 2017-04-15T08:47:31.420
18 Is magic possible? 2017-05-06T11:15:24.717
18 Am I a golfy array? 2017-10-18T18:29:21.707
18 The Shield Wall 2017-11-21T15:54:20.670
18 Is it a Pascal Prime? 2018-01-01T13:23:03.143
18 Hermitian matrix? 2018-02-26T13:01:52.547
18 Is this a Weyr matrix? 2018-05-30T15:11:49.620
18 In for a bumpy ride 2018-07-04T15:24:46.970
18 Check my tunneling arrays 2018-09-04T14:02:37.560
18 Is the word coprime? 2018-09-27T00:27:45.467
18 Is this number a hill number? 2018-11-19T10:56:53.303
18 Can Alice win the game? 2019-11-29T17:44:30.977
17 Finding Not-Quite-Prime Numbers 2012-01-13T21:35:10.757
17 Verify Brainfuck program 2014-01-03T17:16:40.690
17 Is it an emoji? 2016-12-07T00:08:18.920
17 Is this a number? 2016-12-17T08:20:11.280
17 Is this Sequence Graphic? 2017-01-31T18:23:52.913
17 Conjugate permutations 2018-02-15T22:41:54.673
17 We do tower hopping 2018-02-22T18:32:50.587
17 Ordinal string check 2018-04-14T15:46:05.553
17 Dead Frog Walking 2018-06-18T15:11:25.387
17 Sum \$\text{Square}^2\$ 2018-09-10T18:18:55.173
17 Reciprocal copycats 2018-11-13T10:36:56.357
17 Do I have a twin with permutated remainders? 2019-04-04T15:36:52.707
17 I'm in your subnets, golfing your code 2019-05-01T13:23:56.207
16 Undulant numbers 2011-07-11T16:49:16.420
16 Alternating sign matrix verification 2016-06-21T08:43:04.140
16 Non-palindromic numbers 2016-08-25T20:47:42.363