Collatz in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 598th ovs-code 🇩🇪 871 49 24 Oct 2023 598th sean-niemann 🇺🇸 871 49 12 Jul 2024 603rd Shanethegamer 🇺🇸 871 66 4 May 2022 603rd scpchicken 🇵🇼 871 66 5 May 2022 603rd sisyphus-ppcg 🇦🇺 871 66 6 May 2022 603rd Natanaelel 🇸🇪 871 66 15 Jun 2022 603rd Z-snails 871 66 27 Feb 2023 603rd Jeremy-Stafford 871 66 27 Feb 2023 603rd alomiF 871 66 1 Sep 2023 603rd btnlq 871 66 17 Oct 2023 603rd sean-niemann 🇺🇸 871 66 9 Jan 2025 612th dokutan 870 62 28 Apr 2025 613th johnnythedoggie 870 72 13 May 2022 614th inventshah 870 97 6 May 2022 614th roupiq 🇵🇱 870 97 22 Nov 2023 616th MeWhenI 🇻🇦 870 207 21 Apr 2025 617th janbehrens 🇩🇪 869 90 21 Apr 2023 617th Yewzir 🇧🇪 869 90 22 Apr 2023 617th DialFrost 🇸🇬 869 90 6 Nov 2023 617th Ripick 869 90 27 Nov 2024 621st GolfingSuccess 🇬🇷 868 71 5 May 2022 621st emplv 🇱🇻 868 71 5 May 2022 621st JayXon 🇺🇸 868 71 7 May 2022 621st m-tkach 🇺🇦 868 71 15 May 2022 621st nwellnhof 🇩🇪 868 71 5 Jun 2022 621st Irratix 🇳🇱 868 71 13 Jun 2022 621st michael-pruglo 🇺🇦 868 71 13 Jul 2022 621st stefangimmillaro 868 71 2 Jun 2023 621st kkoenig 868 71 21 Dec 2023 621st JohandeRuiter 🇳🇱 868 71 14 Sep 2024 621st masinag 🇮🇹 868 71 6 Oct 2024 621st KasperKivimaeki 🇫🇮 868 71 27 Mar 2025 633rd AlephSquirrel 867 80 20 Apr 2023 633rd ashtraypettingzoo 🇺🇸 867 80 1 Apr 2024 635th nwellnhof 🇩🇪 866 53 4 May 2022 635th GrayJoKing 🇦🇺 866 53 6 May 2022 637th DialFrost 🇸🇬 866 86 24 Oct 2024 637th stefangimmillaro 866 86 14 Jan 2025 639th dieggsy 866 97 8 Oct 2024 639th edsrzf 🇳🇿 866 97 8 Dec 2024 641st jacobly0 🇺🇸 866 153 26 Sep 2023 642nd lukehewittvandy 865 135 18 Jul 2022 642nd OriEy 865 135 27 Apr 2023 642nd Maximizer02 865 135 8 Jun 2024 642nd 0dyse 865 135 23 Apr 2025 646th Andriamanitra 🇫🇮 863 54 21 Jul 2022 646th jared-hughes 863 54 12 Sep 2022 646th OhmNomNom 863 54 7 Oct 2022 646th olleicua 🇺🇸 863 54 21 Jan 2024 646th LostSyntax21 🇬🇧 863 54 12 Mar 2025 651st deadp4nda 🇩🇪 863 90 26 Apr 2024 652nd DialFrost 🇸🇬 862 64 10 Jul 2024 653rd MeWhenI 🇻🇦 862 71 13 Dec 2022 654th Grrisly 862 114 25 Mar 2024 655th mtirado1 861 75 13 Aug 2022 656th Steffan153 🇫🇮 861 82 23 Feb 2023 657th MeWhenI 🇻🇦 861 85 27 Jun 2022 657th Shanethegamer 🇺🇸 861 85 15 May 2023 659th shellbertt 🇨🇦 861 98 9 May 2022 659th iakolzin 861 98 26 May 2022 659th Betuaredead 861 98 5 Jan 2023 659th oceko 861 98 19 Feb 2024 659th dokutan 861 98 17 Mar 2024 659th cuzdav 861 98 24 days ago 659th fuzzylojik-golf 🇺🇸 861 98 14 hours ago 666th TylerBloom 860 96 22 Mar 2024 667th MeWhenI 🇻🇦 860 154 10 Oct 2023 668th yzhs 🇩🇪 859 65 16 Jun 2022 668th rollershutter 859 65 9 Sep 2022 668th bac0id 859 65 26 Sep 2023 671st ovs-code 🇩🇪 859 133 8 Jul 2024 672nd crizin 🇰🇷 859 136 9 Sep 2023 673rd GrayJoKing 🇦🇺 858 56 15 Jan 2024 673rd AlephSquirrel 858 56 21 Jan 2024 675th Setvizan 858 62 12 Jan 2023 Prev 601–675 of 3,035 Next