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 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 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 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 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 789th codingisgreatbutiamnot 888 75 9 Aug 2024 789th Terobero 888 75 23 Aug 2024 789th abhishekg999 888 75 17 Sep 2024 789th RedzGoose 🇦🇺 888 75 7 Oct 2024 789th Clay-Goodling 888 75 8 Oct 2024 789th JunkIce 888 75 5 Mar 2025 789th jiji7879 888 75 20 Jun 2025 789th faragocsaba 888 75 22 Jun 2025 789th bknower 888 75 30 Jun 2025 789th clayboll99 888 75 15 days ago 836th c0d3-4-F00d 🇩🇪 888 132 6 May 2022 836th madeforlosers 888 132 26 Oct 2023 836th Blockyheadman 888 132 1 Nov 2023 836th SpiritAxolotl 🇺🇸 888 132 20 Mar 2024 840th ovs-code 🇩🇪 888 151 9 Sep 2023 840th Yewzir 🇧🇪 888 151 21 May 2024 842nd canissimia 🇦🇶 888 204 25 Nov 2023 843rd MeWhenI 🇻🇦 887 53 1 Jun 2022 843rd stefangimmillaro 887 53 2 Oct 2022 843rd Haksell 🇦🇶 887 53 22 Feb 2023 846th GolfingSuccess 🇬🇷 885 71 5 May 2022 846th emplv 🇱🇻 885 71 5 May 2022 846th JayXon 🇺🇸 885 71 7 May 2022 846th nwellnhof 🇩🇪 885 71 5 Jun 2022 846th stefangimmillaro 885 71 2 Jun 2023 846th 09cf 885 71 4 Oct 2023 846th kkoenig 885 71 21 Dec 2023 846th sean-niemann 🇺🇸 885 71 10 Jul 2024 846th masinag 🇮🇹 885 71 6 Oct 2024 846th KasperKivimaeki 🇫🇮 885 71 27 Mar 2025 856th m-tkach 🇺🇦 885 117 7 May 2022 856th Lydxn 🇨🇦 885 117 7 May 2022 858th Shanethegamer 🇺🇸 884 70 12 Dec 2022 858th Alessandro-Balconi 🇮🇹 884 70 26 Dec 2022 860th primo-ppcg 🇹🇭 884 85 14 Jan 2025 860th MeWhenI 🇻🇦 884 85 21 Apr 2025 862nd SiestaGuru 884 88 9 Jan 2023 862nd rifatx 884 88 5 Jul 2024 864th janbehrens 🇩🇪 884 90 21 Apr 2023 864th Yewzir 🇧🇪 884 90 22 Apr 2023 864th DialFrost 🇸🇬 884 90 6 Nov 2023 864th Ripick 884 90 27 Nov 2024 868th m-tkach 🇺🇦 884 112 22 Jun 2025 869th jared-hughes 884 130 15 Dec 2024 870th m-tkach 🇺🇦 883 59 21 Jan 2024 870th GolfingSuccess 🇬🇷 883 59 20 Jan 2025 872nd nipzu 883 94 17 May 2022 872nd Natanaelel 🇸🇪 883 94 17 Jun 2022 872nd nkoppel 883 94 19 Oct 2022 872nd ovs-code 🇩🇪 883 94 21 Jun 2023 872nd mousetail 🇳🇱 883 94 12 Jan 2024 877th Shanethegamer 🇺🇸 882 51 15 May 2023 878th steffan-polygolf 882 74 14 Feb 2024 879th Irratix 🇳🇱 882 96 4 May 2022 879th MeWhenI 🇻🇦 882 96 1 Jun 2022 879th janbehrens 🇩🇪 882 96 21 Apr 2023 879th Shanethegamer 🇺🇸 882 96 15 May 2023 879th Yewzir 🇧🇪 882 96 11 Nov 2023 879th MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 879th kkoenig 882 96 21 Dec 2023 879th BlankSpruce 882 96 20 Aug 2024 879th fuzzylojik-golf 🇺🇸 882 96 14 Jun 2025 888th ravnskjaer 🇩🇰 882 133 11 Sep 2024 889th Shanethegamer 🇺🇸 882 152 9 Sep 2023 889th emgordon154 882 152 2 Oct 2024 889th DialFrost 🇸🇬 882 152 27 Oct 2024 892nd GrayJoKing 🇦🇺 881 60 24 Oct 2024 893rd ovs-code 🇩🇪 881 73 22 Jul 2023 894th GrayJoKing 🇦🇺 879 84 19 Jun 2022 894th primo-ppcg 🇹🇭 879 84 29 Jun 2022 896th Shanethegamer 🇺🇸 879 142 27 Mar 2025 896th DialFrost 🇸🇬 879 142 28 Mar 2025 896th emgordon154 879 142 10 Apr 2025 899th dokutan 878 62 28 Apr 2025 900th johnnythedoggie 878 72 13 May 2022 Prev 826–900 of 3,215 Next