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New languages are released in a fairly ad-hoc manner. New holes target a monthly release schedule with new holes appearing on the first of the month. Exceptions can occur, for example the simpler Day of Week hole was released mid-month.

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• Added “Tower of Hanoi” Hole

  24 days ago

  Added the “Tower of Hanoi” hole via 0c4288c.

• Added “Erlang” Language

  27 days ago

  Added the “Erlang” language via 7468e46.

• Added “Minesweeper” Hole

  1 Nov 2025

  Added the “Minesweeper” hole via 32dbdb1.

• Added “Trinomial Triangle” Hole

  1 Oct 2025

  Added the “Trinomial Triangle” hole via be593ba.

• Added “Hilbert Curve” Hole

  1 Sep 2025

  Added the “Hilbert Curve” hole via 0d7dc56.

• Added “Groovy” Language

  29 Aug 2025

  Added the “Groovy” language via a258251.

• Added “Topological Sort” Hole

  1 Aug 2025

  Added the “Topological Sort” hole via 3c72c36.

• Added “Mandelbrot” Hole

  1 Jul 2025

  Added the “Mandelbrot” hole via 4caf324.

• Added “Scrambled Sort” Hole

  1 Jun 2025

  Added the “Scrambled Sort” hole via 5920cfd.

• Added “Star Wars GPT” Hole

  1 May 2025

  Added the “Star Wars GPT” hole via 273405d.

• Added “Set” Hole

  31 Mar 2025

  Added the “Set” hole via ef914b6.

• Added “Partition Numbers” Hole

  1 Mar 2025

  Added the “Partition Numbers” hole via 689be06.

• Added “Tic-tac-toe” Hole

  31 Jan 2025

  Added the “Tic-tac-toe” hole via fcf2c4a.

• Added “Gleam” Language

  12 Jan 2025

  Added the “Gleam” language via dddcae6.

• Added “ROT13” Hole

  5 Jan 2025

  Added the “ROT13” hole via 326b5cd.

• Added “Billiards” Hole

  1 Dec 2024

  Added the “Billiards” hole via 9a1fcec.

• Added “Kaprekar Numbers” Hole

  1 Nov 2024

  Added the “Kaprekar Numbers” hole via 05d85ed.

• Added “Kotlin” Language

  23 Oct 2024

  Added the “Kotlin” language via e2f6993.

• Added “Card Number Validation” Hole

  1 Oct 2024

  Added the “Card Number Validation” hole via 1fd2acf.

• Added “PalindromemordnilaP” Hole

  1 Sep 2024

  Added the “PalindromemordnilaP” hole via db53e05.

• Added “Scheme” Language

  22 Aug 2024

  Added the “Scheme” language via a3cd66a.

• Added “jq” Language

  11 Aug 2024

  Added the “jq” language via 7bca306.

• Added “Civet” Language

  3 Aug 2024

  Added the “Civet” language via ab98914.

• Added “Polyominoes” Hole

  1 Aug 2024

  Added the “Polyominoes” hole via 9c742ac.

• Added “Transpose Sentence” Hole

  24 Jul 2024

  Added the “Transpose Sentence” hole via 9802b2d.

• Added “Zeckendorf Representation” Hole

  1 Jul 2024

  Added the “Zeckendorf Representation” hole via 5df895f.

• Added “Reversi” Hole

  1 Jun 2024

  Added the “Reversi” hole via 0ff0d0e.

• Added “N Queens” Hole

  1 May 2024

  Added the “N Queens” hole via 8d348ce.

• Added “Factorial Factorisation” Hole

  13 Apr 2024

  Added the “Factorial Factorisation” hole via 03472e3.

• Added “Rockstar” Language

  12 Mar 2024

  Added the “Rockstar” language via 3e6f170.

• Added “24 Game” Hole

  29 Feb 2024

  Added the “24 Game” hole via 74e8b74.

• Added “Coconut” Language

  15 Jan 2024

  Added the “Coconut” language via b66e4a0.

• Added “Ascending Primes” Hole

  1 Jan 2024

  Added the “Ascending Primes” hole via f5599de.

• Added “Clojure” Language

  10 Dec 2023

  Added the “Clojure” language via 79dcb1e.

• Added “Farey Sequence” Hole

  1 Dec 2023

  Added the “Farey Sequence” hole via 6bd24c1.

• Added “Mahjong” Hole

  1 Dec 2023

  Added the “Mahjong” hole via 6bd24c1.

• Added “DFA Simulator” Hole

  1 Nov 2023

  Added the “DFA Simulator” hole via befe8fa.

• Added “Berry” Language

  8 Oct 2023

  Added the “Berry” language via b5fc39d.

• Added “Arithmetic Numbers” Hole

  1 Oct 2023

  Added the “Arithmetic Numbers” hole via 94068d3.

• Added “Factor” Language

  12 Sep 2023

  Added the “Factor” language via 9a98efe.

• Added “Rijndael S-box” Hole

  1 Sep 2023

  Added the “Rijndael S-box” hole via 8854248.

• Added “ln 2” Hole

  1 Aug 2023

  Added the “ln 2” hole via c8fe7ef.

• Added “Forth” Language

  13 Jul 2023

  Added the “Forth” language via 00db130.

• Added “Gijswijt’s Sequence” Hole

  30 Jun 2023

  Added the “Gijswijt’s Sequence” hole via 13d2a54.

• Added “Medal Tally” Hole

  1 Jun 2023

  Added the “Medal Tally” hole via 6e66587.

• Added “Forsyth–Edwards Notation” Hole

  1 May 2023

  Added the “Forsyth–Edwards Notation” hole via 9701f03.

• Added “Janet” Language

  16 Apr 2023

  Added the “Janet” language via c29127d.

• Added “Day of Week” Hole

  16 Apr 2023

  Added the “Day of Week” hole via bb9a7b4.

• Added “SI Units” Hole

  1 Apr 2023

  Added the “SI Units” hole via 7f7664a.

• Added “TeX” Language

  12 Mar 2023

  Added the “TeX” language via 9426e29.

• Added “γ” Hole

  1 Mar 2023

  Added the “γ” hole via b1fc58d.

• Added “Repeating Decimals” Hole

  1 Feb 2023

  Added the “Repeating Decimals” hole via 9d31f36.

• Added “Maze” Hole

  4 Jan 2023

  Added the “Maze” hole via ab5e373.

• Added “OCaml” Language

  25 Dec 2022

  Added the “OCaml” language via 68bebc5.

• Added “Game of Life” Hole

  22 Dec 2022

  Added the “Game of Life” hole via 70e87ab.

• Added “R” Language

  11 Dec 2022

  Added the “R” language via 4dad4e3.

• Added “Abundant Numbers (Long)” Hole

  19 Nov 2022

  Added the “Abundant Numbers (Long)” hole via b574dc5.

• Added “Inventory Sequence” Hole

  19 Nov 2022

  Added the “Inventory Sequence” hole via b574dc5.

• Added “Pernicious Numbers (Long)” Hole

  19 Nov 2022

  Added the “Pernicious Numbers (Long)” hole via b574dc5.

• Added “AWK” Language

  29 Oct 2022

  Added the “AWK” language via dbbab51.

• Added “Emirp Numbers (Long)” Hole

  29 Oct 2022

  Added the “Emirp Numbers (Long)” hole via c6a93a7.

• Added “Dart” Language

  13 Oct 2022

  Added the “Dart” language via ce89eb5.

• Added “Tcl” Language

  24 Sep 2022

  Added the “Tcl” language via 03769f1.

• Added “Wren” Language

  9 Sep 2022

  Added the “Wren” language via f7c0d8a.

• Added “Evil Numbers (Long)” Hole

  6 Sep 2022

  Added the “Evil Numbers (Long)” hole via 005aa4e.

• Added “Odious Numbers (Long)” Hole

  6 Sep 2022

  Added the “Odious Numbers (Long)” hole via 005aa4e.

• Added “Niven Numbers (Long)” Hole

  8 Aug 2022

  Added the “Niven Numbers (Long)” hole via 2b98517.

• Added “Proximity Grid” Hole

  3 Aug 2022

  Added the “Proximity Grid” hole via ab7be37.

• Added “GolfScript” Language

  21 Jul 2022

  Added the “GolfScript” language via 7ccb56c.

• Added “BASIC” Language

  12 Jun 2022

  Added the “BASIC” language via a64721b.

• Added “Zodiac Signs” Hole

  9 Jun 2022

  Added the “Zodiac Signs” hole via 5f4cab9.

• Added “Elixir” Language

  15 May 2022

  Added the “Elixir” language via 52f641e.

• Added “sed” Language

  12 May 2022

  Added the “sed” language via effe372.

• Added “Jacobi Symbol” Hole

  8 May 2022

  Added the “Jacobi Symbol” hole via 1c7c5fa.

• Added “Collatz” Hole

  4 May 2022

  Added the “Collatz” hole via a42a472.

• Added “Hexdump” Hole

  1 May 2022

  Added the “Hexdump” hole via c3bda58.

• Added “Time Distance” Hole

  10 Apr 2022

  Added the “Time Distance” hole via 8d5c78d.

• Added “ASCII Table” Hole

  26 Mar 2022

  Added the “ASCII Table” hole via 69fd94c.

• Added “Lucky Numbers” Hole

  28 Feb 2022

  Added the “Lucky Numbers” hole via 8fb09fc.

• Added “D” Language

  27 Feb 2022

  Added the “D” language via fc3c0ef.

• Added “Reverse Polish Notation” Hole

  12 Feb 2022

  Added the “Reverse Polish Notation” hole via 71cad37.

• Added “Catalan Numbers” Hole

  29 Jan 2022

  Added the “Catalan Numbers” hole via 0c8ef68.

• Added “Number Spiral” Hole

  25 Jan 2022

  Added the “Number Spiral” hole via f92bc83.

• Added “ISBN” Hole

  10 Jan 2022

  Added the “ISBN” hole via 1e59551.

• Added “K” Language

  9 Jan 2022

  Added the “K” language via ab1f804.

• Added “Catalan’s Constant” Hole

  2 Jan 2022

  Added the “Catalan’s Constant” hole via 1628145.

• Added “C++” Language

  1 Jan 2022

  Added the “C++” language via e431f15.

• Added “Prime Numbers (Long)” Hole

  5 Dec 2021

  Added the “Prime Numbers (Long)” hole via 56ae94b.

• Added “Foo Fizz Buzz Bar” Hole

  21 Nov 2021

  Added the “Foo Fizz Buzz Bar” hole via fbf52e2.

• Added “Prolog” Language

  14 Nov 2021

  Added the “Prolog” language via 52d818c.

• Added “Musical Chords” Hole

  2 Nov 2021

  Added the “Musical Chords” hole via 229fb25.

• Added “Smith Numbers” Hole

  5 Oct 2021

  Added the “Smith Numbers” hole via 3df5e00.

• Added “Happy Numbers (Long)” Hole

  19 Sep 2021

  Added the “Happy Numbers (Long)” hole via 428a369.

• Added “QR Decoder” Hole

  17 Sep 2021

  Added the “QR Decoder” hole via 1978cdf.

• Added “Fractions” Hole

  3 Sep 2021

  Added the “Fractions” hole via 6d99d16.

• Added “Arrows” Hole

  22 Aug 2021

  Added the “Arrows” hole via e7c9e6a.

• Added “VimL” Language

  22 Jul 2021

  Added the “VimL” language via 75cd798.

• Added “Pascal” Language

  7 Jul 2021

  Added the “Pascal” language via dfb678d.

• Added “Assembly” Language

  29 May 2021

  Added the “Assembly” language via babc6cb.

• Added “Star Wars Opening Crawl” Hole

  3 May 2021

  Added the “Star Wars Opening Crawl” hole via e3ade9f.

• Added “Van Eck Sequence” Hole

  1 May 2021

  Added the “Van Eck Sequence” hole via 7b70234.

• Added “Sudoku (Fill-in)” Hole

  25 Apr 2021

  Added the “Sudoku (Fill-in)” hole via db4bfba.

• Added “Crystal” Language

  23 Mar 2021

  Added the “Crystal” language via a3cbf07.

• Added “Hexagony” Language

  24 Jan 2021

  Added the “Hexagony” language via 78f7023.

• Added “Kolakoski Constant” Hole

  16 Jan 2021

  Added the “Kolakoski Constant” hole via 1d9ce0d.

• Added “Kolakoski Sequence” Hole

  16 Jan 2021

  Added the “Kolakoski Sequence” hole via 1d9ce0d.

• Added “Recamán” Hole

  26 Dec 2020

  Added the “Recamán” hole via 1ef979e.

• Added “V” Language

  24 Dec 2020

  Added the “V” language via 74bbb70.

• Added “Look and Say” Hole

  1 Dec 2020

  Added the “Look and Say” hole via fe9bf4c.

• Added “Emojify” Hole

  25 Nov 2020

  Added the “Emojify” hole via c38e23e.

• Added “Levenshtein Distance” Hole

  11 Nov 2020

  Added the “Levenshtein Distance” hole via 89fe682.

• Added “><>” Language

  31 Oct 2020

  Added the “><>” language via 4405e02.

• Added “Vampire Numbers” Hole

  30 Oct 2020

  Added the “Vampire Numbers” hole via 96034b1.

• Added “Zig” Language

  24 Oct 2020

  Added the “Zig” language via e3e56fe.

• Added “Intersection” Hole

  4 Oct 2020

  Added the “Intersection” hole via 3858950.

• Added “Tongue-twisters” Hole

  29 Sep 2020

  Added the “Tongue-twisters” hole via 5a831a7.

• Added “SQL” Language

  29 Sep 2020

  Added the “SQL” language via 9f96619.

• Added “Leyland Numbers” Hole

  26 Jul 2020

  Added the “Leyland Numbers” hole via 90b0cc8.

• Added “COBOL” Language

  24 Jul 2020

  Added the “COBOL” language via 681846d.

• Added “CSS Colors” Hole

  21 Jun 2020

  Added the “CSS Colors” hole via 3e971cc.

• Added “PowerShell” Language

  1 Jun 2020

  Added the “PowerShell” language via 5a2068c.

• Added “C#” Language

  9 May 2020

  Added the “C#” language via b71f2ee.

• Added “F#” Language

  9 May 2020

  Added the “F#” language via b71f2ee.

• Added “Java” Language

  21 Apr 2020

  Added the “Java” language via 6b791f5.

• Added “Fortran” Language

  17 Apr 2020

  Added the “Fortran” language via 4849dde.

• Added “Go” Language

  15 Apr 2020

  Added the “Go” language via 5feb18b.

• Added “Lucky Tickets” Hole

  14 Apr 2020

  Added the “Lucky Tickets” hole via d386360.

• Added “United States” Hole

  28 Jan 2020

  Added the “United States” hole via 08e4756.

• Added “Swift” Language

  12 Jan 2020

  Added the “Swift” language via 93d765b.

• Added “Rust” Language

  3 Jan 2020

  Added the “Rust” language via a9bbba9.

• Added “Abundant Numbers” Hole

  17 Nov 2019

  Added the “Abundant Numbers” hole via fb227ed.

• Added “Ordinal Numbers” Hole

  11 Jul 2019

  Added the “Ordinal Numbers” hole via 4e38900.

• Added “Rock-paper-scissors-Spock-lizard” Hole

  17 Jun 2019

  Added the “Rock-paper-scissors-Spock-lizard” hole via de9369a.

• Added “Ten-pin Bowling” Hole

  12 Jun 2019

  Added the “Ten-pin Bowling” hole via 5348743.

• Added “√2” Hole

  25 May 2019

  Added the “√2” hole via 14290db.

• Added “Nim” Language

  19 May 2019

  Added the “Nim” language via 269ff68.

• Added “brainfuck” Language

  7 Apr 2019

  Added the “brainfuck” language via 3cbc7cf.

• Added “C” Language

  28 Feb 2019

  Added the “C” language via c960e70.

• Added “Cubes” Hole

  13 Jan 2019

  Added the “Cubes” hole via c689b8a.

• Added “Leap Years” Hole

  3 Dec 2018

  Added the “Leap Years” hole via 2f87dea.

• Added “Sudoku” Hole

  15 Nov 2018

  Added the “Sudoku” hole via 1178818.

• Added “Julia” Language

  2 Sep 2018

  Added the “Julia” language via 447121b.

• Added “J” Language

  8 Aug 2018

  Added the “J” language via 00660df.

• Added “Poker” Hole

  25 Jul 2018

  Added the “Poker” hole via edd2828.

• Added “Rule 110” Hole

  6 Jul 2018

  Added the “Rule 110” hole via 646df41.

• Added “λ” Hole

  7 Jun 2018

  Added the “λ” hole via 2080b94.

• Added “Diamonds” Hole

  6 Jun 2018

  Added the “Diamonds” hole via 834750b.

• Added “Haskell” Language

  20 May 2018

  Added the “Haskell” language via bd8e789.

• Added “Niven Numbers” Hole

  3 May 2018

  Added the “Niven Numbers” hole via 7b72ebc.

• Added “Common Lisp” Language

  22 Mar 2018

  Added the “Common Lisp” language via 827599e.

• Added “Morse Decoder” Hole

  18 Feb 2018

  Added the “Morse Decoder” hole via 5790715.

• Added “Morse Encoder” Hole

  18 Feb 2018

  Added the “Morse Encoder” hole via 5790715.

• Added “brainfuck” Hole

  27 Jan 2018

  Added the “brainfuck” hole via 05e21ff.

• Added “Divisors” Hole

  10 Jan 2018

  Added the “Divisors” hole via 922fb91.

• Added “Lua” Language

  7 Jan 2018

  Added the “Lua” language via d83fcf9.

• Added “12 Days of Christmas” Hole

  8 Dec 2017

  Added the “12 Days of Christmas” hole via 079513e.

• Added “Christmas Trees” Hole

  5 Dec 2017

  Added the “Christmas Trees” hole via 30fc7c2.

• Added “Pangram Grep” Hole

  30 Nov 2017

  Added the “Pangram Grep” hole via 2dfbcfe.

• Added “τ” Hole

  28 Nov 2017

  Added the “τ” hole via 31d18c8.

• Added “Bash” Language

  12 Nov 2017

  Added the “Bash” language via a3ef71c.

• Added “φ” Hole

  11 Nov 2017

  Added the “φ” hole via 0219147.

• Added “Roman to Arabic” Hole

  10 Nov 2017

  Added the “Roman to Arabic” hole via 63510fc.

• Added “Quine” Hole

  7 Nov 2017

  Added the “Quine” hole via ee1742f.

• Added “Happy Numbers” Hole

  31 Oct 2017

  Added the “Happy Numbers” hole via ce2d6b9.

• Added “Pernicious Numbers” Hole

  18 Oct 2017

  Added the “Pernicious Numbers” hole via 63bad53.

• Added “Evil Numbers” Hole

  18 Oct 2017

  Added the “Evil Numbers” hole via e71743f.

• Added “Odious Numbers” Hole

  18 Oct 2017

  Added the “Odious Numbers” hole via e71743f.

• Added “Sierpiński Triangle” Hole

  8 Oct 2017

  Added the “Sierpiński Triangle” hole via 35da66a.

• Added “Emirp Numbers” Hole

  8 Oct 2017

  Added the “Emirp Numbers” hole via aa9e81e.

• Added “Prime Numbers” Hole

  4 Oct 2017

  Added the “Prime Numbers” hole via ac9b179.

• Added “Spelling Numbers” Hole

  29 Sep 2017

  Added the “Spelling Numbers” hole via 39ce198.

• Added “𝑒” Hole

  20 Sep 2017

  Added the “𝑒” hole via bb1a117.

• Added “Fibonacci” Hole

  16 Sep 2017

  Added the “Fibonacci” hole via 7475f08.

• Added “Seven Segment” Hole

  27 Aug 2017

  Added the “Seven Segment” hole via 7d34727.

• Added “Arabic to Roman” Hole

  22 Jul 2017

  Added the “Arabic to Roman” hole via b1d91b8.

• Added “JavaScript” Language

  16 Jul 2017

  Added the “JavaScript” language via 07aa3ed.

• Added “Python” Language

  15 Jul 2017

  Added the “Python” language via b1d083d.

• Added “Pascal’s Triangle” Hole

  15 Jul 2017

  Added the “Pascal’s Triangle” hole via 26cf869.

• Added “99 Bottles of Beer” Hole

  6 Jul 2017

  Added the “99 Bottles of Beer” hole via 15bc065.

• Added “π” Hole

  2 Jul 2017

  Added the “π” hole via 9cc775e.

• Added “PHP” Language

  14 Jun 2017

  Added the “PHP” language via dc1b9a8.

• Added “Raku” Language

  12 Jun 2017

  Added the “Raku” language via c5468f0.

• Added “Ruby” Language

  8 May 2017

  Added the “Ruby” language via 8029a96.