Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arrows ASCII Table brainfuck Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers Look and Say Lucky Numbers Lucky Tickets Maze Morse Decoder Morse Encoder Musical Chords Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers Pangram Grep Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Rock-paper-scissors-Spock-lizard Roman to Arabic Rule 110 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku v2 Ten-pin Bowling Time Distance Tongue-twisters United States Vampire Numbers Van Eck Sequence Zodiac Signs γ λ π τ φ √2 𝑒 All Languages ><> Assembly AWK Bash BASIC brainfuck C C# C++ COBOL Crystal D Dart Elixir F# Fortran Go GolfScript Haskell Hexagony J Janet Java JavaScript Julia K Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Ruby Rust sed SQL Swift Tcl TeX V VimL Wren Zig Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC brainfuck C C# C++ COBOL Crystal D Dart Elixir F# Fortran Go GolfScript Haskell Hexagony J Janet Java JavaScript Julia K Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Ruby Rust sed SQL Swift Tcl TeX V VimL Wren Zig Hole All 12 Days of Christmas 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arrows ASCII Table brainfuck Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers Look and Say Lucky Numbers Lucky Tickets Maze Morse Decoder Morse Encoder Musical Chords Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers Pangram Grep Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Rock-paper-scissors-Spock-lizard Roman to Arabic Rule 110 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku v2 Ten-pin Bowling Time Distance Tongue-twisters United States Vampire Numbers Van Eck Sequence Zodiac Signs γ λ π τ φ √2 𝑒 # Golfer Lang Points Bytes Time 1st AlephSquirrel GolfScript 1,000 26 6 Jan 2023 2nd ovs-code 🇩🇪 K 978 31 8 Mar 2023 3rd Lydxn 🇨🇦 Python 972 68 5 May 2022 3rd GrayJoKing 🇦🇺 Python 972 68 15 Nov 2022 3rd Bubbler-4 Python 972 68 15 Nov 2022 3rd JayXon 🇺🇸 Python 972 68 7 Mar 2023 7th Bubbler-4 J 967 34 6 May 2022 7th ovs-code 🇩🇪 J 967 34 7 Mar 2023 9th Irratix 🇳🇱 JavaScript 965 55 4 May 2022 9th nwellnhof 🇩🇪 JavaScript 965 55 4 May 2022 9th m-tkach 🇺🇦 JavaScript 965 55 5 May 2022 9th Lydxn 🇨🇦 JavaScript 965 55 5 May 2022 9th JayXon 🇺🇸 JavaScript 965 55 5 May 2022 9th emplv 🇱🇻 JavaScript 965 55 5 May 2022 9th prplz 🇦🇺 JavaScript 965 55 5 May 2022 9th vlpx 🇮🇲 JavaScript 965 55 5 May 2022 9th primo-ppcg 🇹🇭 JavaScript 965 55 5 May 2022 9th GrayJoKing 🇦🇺 JavaScript 965 55 6 May 2022 9th ovs-code 🇩🇪 JavaScript 965 55 6 May 2022 9th sisyphus-ppcg 🇦🇺 JavaScript 965 55 7 May 2022 9th pavelb JavaScript 965 55 8 Aug 2022 9th stefangimmillaro JavaScript 965 55 2 Oct 2022 9th MeWhenI 🇻🇦 JavaScript 965 55 2 Oct 2022 9th Steffan153 🇫🇮 JavaScript 965 55 12 Nov 2022 9th Bubbler-4 JavaScript 965 55 14 Nov 2022 26th sisyphus-ppcg 🇦🇺 GolfScript 963 27 22 Jul 2022 26th saito-ta 🇯🇵 GolfScript 963 27 22 Jul 2022 26th MeWhenI 🇻🇦 GolfScript 963 27 22 Jul 2022 26th Lydxn 🇨🇦 GolfScript 963 27 28 Jul 2022 26th GrayJoKing 🇦🇺 GolfScript 963 27 31 Jul 2022 26th clockworknazo GolfScript 963 27 17 Aug 2022 26th primo-ppcg 🇹🇭 GolfScript 963 27 30 Sep 2022 26th JayXon 🇺🇸 GolfScript 963 27 23 Oct 2022 26th Steffan153 🇫🇮 GolfScript 963 27 15 Nov 2022 26th betaveros GolfScript 963 27 4 Jan 2023 26th ovs-code 🇩🇪 GolfScript 963 27 10 Feb 2023 26th neel112358 GolfScript 963 27 16 Mar 2023 38th nwellnhof 🇩🇪 Python 958 69 4 May 2022 38th m-tkach 🇺🇦 Python 958 69 4 May 2022 38th GolfingSuccess 🇬🇷 Python 958 69 5 May 2022 38th jared-hughes Python 958 69 5 May 2022 38th ovs-code 🇩🇪 Python 958 69 5 May 2022 38th btnlq Python 958 69 5 May 2022 38th sisyphus-ppcg 🇦🇺 Python 958 69 6 May 2022 38th lynn Python 958 69 22 Aug 2022 38th Steffan153 🇫🇮 Python 958 69 15 Nov 2022 47th Lydxn 🇨🇦 C 954 69 7 May 2022 47th nai62 C 954 69 27 Aug 2022 49th Lydxn 🇨🇦 Ruby 953 49 4 May 2022 49th JayXon 🇺🇸 Ruby 953 49 17 Oct 2022 1–50 of 1,548 Next