Collatz in all languages in bytes. 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 Hilbert Curve 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 Mandelbrot 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 Scrambled Sort 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 Topological Sort Transpose Sentence Trinomial Triangle 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala 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 Groovy 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 Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala 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 Hilbert Curve 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 Mandelbrot 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 Scrambled Sort 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 Topological Sort Transpose Sentence Trinomial Triangle 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time 795th 123mjb 889 75 25 Jan 2024 795th jbjd 889 75 25 Feb 2024 795th gabe-gallegos 889 75 2 May 2024 795th kejcao 🇨🇦 889 75 11 May 2024 795th f-tucker 889 75 24 May 2024 795th Florian-Mt 889 75 22 Jul 2024 795th codingisgreatbutiamnot 889 75 9 Aug 2024 795th Terobero 889 75 23 Aug 2024 795th abhishekg999 889 75 17 Sep 2024 795th RedzGoose 🇦🇺 889 75 7 Oct 2024 795th Clay-Goodling 889 75 8 Oct 2024 795th JunkIce 889 75 5 Mar 2025 795th jiji7879 889 75 20 Jun 2025 795th faragocsaba 889 75 22 Jun 2025 795th bknower 889 75 30 Jun 2025 795th clayboll99 889 75 14 Jul 2025 842nd GrayJoKing 🇦🇺 889 77 13 Sep 2024 843rd mousetail 🇳🇱 888 41 29 Aug 2025 844th primo-ppcg 🇹🇭 888 85 14 Jan 2025 844th MeWhenI 🇻🇦 888 85 21 Apr 2025 846th jared-hughes 888 130 15 Dec 2024 847th canissimia 🇦🇶 888 204 25 Nov 2023 848th MeWhenI 🇻🇦 887 53 1 Jun 2022 848th stefangimmillaro 887 53 2 Oct 2022 848th Haksell 🇦🇶 887 53 22 Feb 2023 851st Shanethegamer 🇺🇸 886 70 12 Dec 2022 851st Alessandro-Balconi 🇮🇹 886 70 26 Dec 2022 853rd ovs-code 🇩🇪 886 73 22 Jul 2023 854th albanian-laundromat 886 94 10 days ago 855th m-tkach 🇺🇦 886 112 22 Jun 2025 856th GolfingSuccess 🇬🇷 885 71 5 May 2022 856th emplv 🇱🇻 885 71 5 May 2022 856th JayXon 🇺🇸 885 71 7 May 2022 856th nwellnhof 🇩🇪 885 71 5 Jun 2022 856th stefangimmillaro 885 71 2 Jun 2023 856th 09cf 885 71 4 Oct 2023 856th kkoenig 885 71 21 Dec 2023 856th sean-niemann 🇺🇸 885 71 10 Jul 2024 856th masinag 🇮🇹 885 71 6 Oct 2024 865th SiestaGuru 885 88 9 Jan 2023 865th rifatx 885 88 5 Jul 2024 865th kmathis22 885 88 9 days ago 868th janbehrens 🇩🇪 885 90 21 Apr 2023 868th Yewzir 🇧🇪 885 90 22 Apr 2023 868th DialFrost 🇸🇬 885 90 6 Nov 2023 868th Ripick 885 90 27 Nov 2024 872nd nipzu 884 94 17 May 2022 872nd Natanaelel 🇸🇪 884 94 17 Jun 2022 872nd nkoppel 884 94 19 Oct 2022 872nd ovs-code 🇩🇪 884 94 21 Jun 2023 872nd mousetail 🇳🇱 884 94 12 Jan 2024 877th MeWhenI 🇻🇦 884 110 9 Feb 2023 877th edsrzf 🇳🇿 884 110 28 Nov 2024 877th targrik 884 110 30 Jun 2025 880th m-tkach 🇺🇦 883 59 21 Jan 2024 880th GolfingSuccess 🇬🇷 883 59 20 Jan 2025 882nd steffan-polygolf 883 74 14 Feb 2024 883rd Irratix 🇳🇱 883 96 4 May 2022 883rd MeWhenI 🇻🇦 883 96 1 Jun 2022 883rd janbehrens 🇩🇪 883 96 21 Apr 2023 883rd Shanethegamer 🇺🇸 883 96 15 May 2023 883rd Yewzir 🇧🇪 883 96 11 Nov 2023 883rd MateuszPietrzak 🇵🇱 883 96 18 Nov 2023 883rd kkoenig 883 96 21 Dec 2023 883rd BlankSpruce 883 96 20 Aug 2024 883rd fuzzylojik-golf 🇺🇸 883 96 14 Jun 2025 892nd Shanethegamer 🇺🇸 882 51 15 May 2023 893rd GrayJoKing 🇦🇺 882 60 24 Oct 2024 894th kg583 🇺🇸 882 84 30 Jul 2025 895th Shanethegamer 🇺🇸 881 73 8 May 2025 895th DialFrost 🇸🇬 881 73 3 Jun 2025 895th edsrzf 🇳🇿 881 73 4 Jul 2025 898th johnnythedoggie 880 72 13 May 2022 898th kaascevich 880 72 8 Jul 2025 900th GrayJoKing 🇦🇺 880 84 19 Jun 2022 First Prev 826–900 of 3,375 Next Last