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 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 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 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 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 Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 898th Heathcorp 🇦🇺 877 61 17 Jul 2022 898th C0de5mith 🇺🇸 877 61 3 Aug 2022 898th sebipopa 🇷🇴 877 61 18 Aug 2022 898th moikaturns 🇬🇧 877 61 25 Sep 2022 898th FlorianCassayre 🇫🇷 877 61 27 Sep 2022 898th Mazn3k 877 61 1 Feb 2023 898th tvcv901 877 61 22 Mar 2023 898th unfinishedprogram 877 61 19 Jul 2023 898th snoozingnewt 🇺🇸 877 61 23 Sep 2023 898th funnyboy-roks 877 61 9 May 2024 898th bac0id 877 61 29 Jun 2024 898th madex 🇩🇪 877 61 9 Jul 2024 898th FortuiteMan 🇫🇷 877 61 10 Oct 2024 898th RobertHoeh 877 61 5 Apr 2025 898th LvLError 877 61 29 May 2025 898th Lv0Sys 🇵🇱 877 61 30 May 2025 898th miles-evan 877 61 5 Aug 2025 918th Shanethegamer 🇺🇸 877 66 4 May 2022 918th scpchicken 🇵🇼 877 66 5 May 2022 918th sisyphus-ppcg 🇦🇺 877 66 6 May 2022 918th Natanaelel 🇸🇪 877 66 15 Jun 2022 918th Z-snails 877 66 27 Feb 2023 918th Jeremy-Stafford 877 66 27 Feb 2023 918th alomiF 877 66 1 Sep 2023 918th btnlq 877 66 17 Oct 2023 926th guilhem-roy 🇫🇷 877 76 5 May 2022 926th NewDefectus 🇮🇱 877 76 6 May 2022 926th CuboidRaptor 🇨🇦 877 76 25 May 2022 926th TheSmilingTurtle 877 76 5 Jun 2022 926th Romain-1 🇫🇷 877 76 8 Jun 2022 926th jhpaques 🇫🇷 877 76 30 Jul 2022 926th chriscianfarani 877 76 10 Aug 2022 926th eshilo-draper 877 76 13 Sep 2022 926th suwat513 877 76 22 Sep 2022 926th Jaydosu 877 76 14 Nov 2022 926th tails618 877 76 2 Dec 2022 926th KevinLyvers 877 76 17 Dec 2022 926th nayakrujul 877 76 3 Jan 2023 926th CheeseCake628 🇳🇴 877 76 8 Jan 2023 926th CatsAreFluffy 877 76 18 Feb 2023 926th adamnielson42 🇺🇸 877 76 1 Mar 2023 926th Schreipfelerer 877 76 9 Apr 2023 926th hm5822 877 76 22 Apr 2023 926th celiendonze 🇨🇭 877 76 5 Jul 2023 926th brochmann 🇸🇪 877 76 13 Aug 2023 926th Command-Master 877 76 2 Oct 2023 926th chartung17 877 76 17 Dec 2023 926th smokestacklightnin 🇺🇸 877 76 10 Jan 2024 926th NickTheEASDude 🇺🇸 877 76 26 Jan 2024 926th yuchuehw 877 76 2 Feb 2024 926th Azearia 877 76 26 Feb 2024 926th tpasfieldERAU 877 76 18 May 2024 926th khavik 877 76 29 May 2024 926th Ythaenagor 877 76 5 Aug 2024 926th martion2007 877 76 9 Aug 2024 926th sjrct 877 76 10 Aug 2024 926th Mathrew2012 877 76 9 Nov 2024 926th kawrei 877 76 4 May 2025 926th RaBa21 🇭🇺 877 76 19 Jul 2025 960th nwellnhof 🇩🇪 875 53 4 May 2022 960th GrayJoKing 🇦🇺 875 53 6 May 2022 962nd c0d3-4-F00d 🇩🇪 875 89 5 May 2022 962nd fkantelberg 875 89 15 Jul 2023 962nd TRexOnGit 875 89 16 Feb 2024 962nd arcpolaris 875 89 18 Nov 2024 966th Grrisly 875 114 25 Mar 2024 967th AlephSquirrel 874 80 20 Apr 2023 967th ashtraypettingzoo 🇺🇸 874 80 1 Apr 2024 969th inventshah 874 97 6 May 2022 969th roupiq 🇵🇱 874 97 22 Nov 2023 971st MeWhenI 🇻🇦 873 71 13 Dec 2022 972nd Irratix 🇳🇱 873 72 4 May 2022 972nd m-tkach 🇺🇦 873 72 4 May 2022 972nd jared-hughes 873 72 6 Jul 2022 972nd michael-pruglo 🇺🇦 873 72 13 Jul 2022 Prev 901–975 of 3,340 Next
