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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort 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 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 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 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 786th RedzGoose 🇦🇺 888 75 7 Oct 2024 786th Clay-Goodling 888 75 8 Oct 2024 786th JunkIce 888 75 5 Mar 2025 786th jiji7879 888 75 26 days ago 786th faragocsaba 888 75 24 days ago 786th bknower 888 75 16 days ago 786th clayboll99 888 75 2 days ago 833rd c0d3-4-F00d 🇩🇪 888 132 6 May 2022 833rd madeforlosers 888 132 26 Oct 2023 833rd Blockyheadman 888 132 1 Nov 2023 833rd SpiritAxolotl 🇺🇸 888 132 20 Mar 2024 837th canissimia 🇦🇶 888 204 25 Nov 2023 838th MeWhenI 🇻🇦 887 53 1 Jun 2022 838th stefangimmillaro 887 53 2 Oct 2022 838th Haksell 🇦🇶 887 53 22 Feb 2023 841st ovs-code 🇩🇪 887 151 9 Sep 2023 841st Yewzir 🇧🇪 887 151 21 May 2024 843rd GolfingSuccess 🇬🇷 885 71 5 May 2022 843rd emplv 🇱🇻 885 71 5 May 2022 843rd JayXon 🇺🇸 885 71 7 May 2022 843rd nwellnhof 🇩🇪 885 71 5 Jun 2022 843rd stefangimmillaro 885 71 2 Jun 2023 843rd 09cf 885 71 4 Oct 2023 843rd kkoenig 885 71 21 Dec 2023 843rd sean-niemann 🇺🇸 885 71 10 Jul 2024 843rd masinag 🇮🇹 885 71 6 Oct 2024 843rd KasperKivimaeki 🇫🇮 885 71 27 Mar 2025 853rd m-tkach 🇺🇦 885 117 7 May 2022 853rd Lydxn 🇨🇦 885 117 7 May 2022 855th Shanethegamer 🇺🇸 884 70 12 Dec 2022 855th Alessandro-Balconi 🇮🇹 884 70 26 Dec 2022 857th SiestaGuru 884 88 9 Jan 2023 857th rifatx 884 88 5 Jul 2024 859th janbehrens 🇩🇪 884 90 21 Apr 2023 859th Yewzir 🇧🇪 884 90 22 Apr 2023 859th DialFrost 🇸🇬 884 90 6 Nov 2023 859th Ripick 884 90 27 Nov 2024 863rd m-tkach 🇺🇦 884 112 24 days ago 864th jared-hughes 884 130 15 Dec 2024 865th m-tkach 🇺🇦 883 59 21 Jan 2024 865th GolfingSuccess 🇬🇷 883 59 20 Jan 2025 867th nipzu 883 94 17 May 2022 867th Natanaelel 🇸🇪 883 94 17 Jun 2022 867th nkoppel 883 94 19 Oct 2022 867th ovs-code 🇩🇪 883 94 21 Jun 2023 867th mousetail 🇳🇱 883 94 12 Jan 2024 872nd Shanethegamer 🇺🇸 882 51 15 May 2023 873rd steffan-polygolf 882 74 14 Feb 2024 874th primo-ppcg 🇹🇭 882 85 14 Jan 2025 874th MeWhenI 🇻🇦 882 85 21 Apr 2025 876th Irratix 🇳🇱 882 96 4 May 2022 876th MeWhenI 🇻🇦 882 96 1 Jun 2022 876th janbehrens 🇩🇪 882 96 21 Apr 2023 876th Shanethegamer 🇺🇸 882 96 15 May 2023 876th Yewzir 🇧🇪 882 96 11 Nov 2023 876th MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 876th kkoenig 882 96 21 Dec 2023 876th BlankSpruce 882 96 20 Aug 2024 876th fuzzylojik-golf 🇺🇸 882 96 14 Jun 2025 885th ravnskjaer 🇩🇰 882 133 11 Sep 2024 886th GrayJoKing 🇦🇺 881 60 24 Oct 2024 887th ovs-code 🇩🇪 881 73 22 Jul 2023 888th Shanethegamer 🇺🇸 881 152 9 Sep 2023 888th emgordon154 881 152 2 Oct 2024 888th DialFrost 🇸🇬 881 152 27 Oct 2024 891st GrayJoKing 🇦🇺 879 84 19 Jun 2022 891st primo-ppcg 🇹🇭 879 84 29 Jun 2022 893rd Shanethegamer 🇺🇸 879 142 27 Mar 2025 893rd DialFrost 🇸🇬 879 142 28 Mar 2025 893rd emgordon154 879 142 10 Apr 2025 896th dokutan 878 62 28 Apr 2025 897th johnnythedoggie 878 72 13 May 2022 897th kaascevich 878 72 8 days ago 899th Shanethegamer 🇺🇸 878 73 8 May 2025 899th DialFrost 🇸🇬 878 73 3 Jun 2025 Prev 826–900 of 3,193 Next