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 Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Fibonacci Fizz Buzz Foo Fizz Buzz Bar 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 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 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 Java JavaScript Julia K Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Ruby Rust sed SQL Swift Tcl 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 Java JavaScript Julia K Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Ruby Rust sed SQL Swift Tcl 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 Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Fibonacci Fizz Buzz Foo Fizz Buzz Bar 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 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 λ π τ φ √2 𝑒 # Golfer Lang Points Bytes Time 1st AlephSquirrel GolfScript 1,000 26 6 Jan 2023 2nd Bubbler-4 K 971 33 6 May 2022 2nd rak1507 🇬🇧 K 971 33 8 May 2022 2nd ngn 🇧🇬 K 971 33 11 May 2022 2nd ovs-code 🇩🇪 K 971 33 15 days ago 6th Lydxn 🇨🇦 Python 969 68 5 May 2022 6th GrayJoKing 🇦🇺 Python 969 68 15 Nov 2022 6th Bubbler-4 Python 969 68 15 Nov 2022 9th Bubbler-4 J 966 34 6 May 2022 10th sisyphus-ppcg 🇦🇺 GolfScript 963 27 22 Jul 2022 10th saito-ta 🇯🇵 GolfScript 963 27 22 Jul 2022 10th MeWhenI 🇻🇦 GolfScript 963 27 22 Jul 2022 10th Lydxn 🇨🇦 GolfScript 963 27 28 Jul 2022 10th GrayJoKing 🇦🇺 GolfScript 963 27 31 Jul 2022 10th clockworknazo GolfScript 963 27 17 Aug 2022 10th primo-ppcg 🇹🇭 GolfScript 963 27 30 Sep 2022 10th JayXon 🇺🇸 GolfScript 963 27 23 Oct 2022 10th Steffan153 🇫🇮 GolfScript 963 27 15 Nov 2022 10th betaveros GolfScript 963 27 4 Jan 2023 20th Irratix 🇳🇱 JavaScript 962 55 4 May 2022 20th nwellnhof 🇩🇪 JavaScript 962 55 4 May 2022 20th m-tkach 🇺🇦 JavaScript 962 55 5 May 2022 20th Lydxn 🇨🇦 JavaScript 962 55 5 May 2022 20th JayXon 🇺🇸 JavaScript 962 55 5 May 2022 20th emplv 🇱🇻 JavaScript 962 55 5 May 2022 20th prplz 🇦🇺 JavaScript 962 55 5 May 2022 20th vlpx 🇮🇲 JavaScript 962 55 5 May 2022 20th primo-ppcg 🇹🇭 JavaScript 962 55 5 May 2022 20th GrayJoKing 🇦🇺 JavaScript 962 55 6 May 2022 20th ovs-code 🇩🇪 JavaScript 962 55 6 May 2022 20th sisyphus-ppcg 🇦🇺 JavaScript 962 55 7 May 2022 20th pavelb JavaScript 962 55 8 Aug 2022 20th stefangimmillaro JavaScript 962 55 2 Oct 2022 20th MeWhenI 🇻🇦 JavaScript 962 55 2 Oct 2022 20th Steffan153 🇫🇮 JavaScript 962 55 12 Nov 2022 20th Bubbler-4 JavaScript 962 55 14 Nov 2022 37th nwellnhof 🇩🇪 Python 955 69 4 May 2022 37th m-tkach 🇺🇦 Python 955 69 4 May 2022 37th GolfingSuccess 🇬🇷 Python 955 69 5 May 2022 37th jared-hughes Python 955 69 5 May 2022 37th ovs-code 🇩🇪 Python 955 69 5 May 2022 37th JayXon 🇺🇸 Python 955 69 5 May 2022 37th btnlq Python 955 69 5 May 2022 37th sisyphus-ppcg 🇦🇺 Python 955 69 6 May 2022 37th lynn Python 955 69 22 Aug 2022 37th Steffan153 🇫🇮 Python 955 69 15 Nov 2022 47th GrayJoKing 🇦🇺 ><> 952 38 5 May 2022 48th Lydxn 🇨🇦 Ruby 952 49 4 May 2022 48th JayXon 🇺🇸 Ruby 952 49 17 Oct 2022 48th GrayJoKing 🇦🇺 Ruby 952 49 15 Nov 2022 1–50 of 1,309 Next