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 Minesweeper 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 Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Minesweeper 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 Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 63rd Argeento 🇵🇱 955 56 10ms 25 Aug 2023 63rd weliveinhell 🇭🇹 955 56 11ms 2 Oct 2023 63rd coreynash 955 56 9ms 6 Oct 2023 63rd dylanarmstrong 955 56 15ms 10 Dec 2023 63rd two-bad 🇬🇧 955 56 11ms 23 Feb 2024 63rd mehbark 955 56 14ms 27 Jul 2024 63rd madeforlosers 955 56 11ms 4 Nov 2024 63rd XenThe 🇬🇧 955 56 11ms 6 Jun 2025 63rd albanian-laundromat 955 56 10ms 5 Oct 2025 63rd Tristanchaang 955 56 10ms 47 mins ago 86th Lydxn 🇨🇦 953 89 55ms 6 May 2022 86th JayXon 🇺🇸 953 89 55ms 7 May 2022 86th nwellnhof 🇩🇪 953 89 61ms 5 Jun 2022 86th snyderek 🇺🇸 953 89 56ms 19 Feb 2025 90th 2bular 952 32 27ms 17 Oct 2024 91st Lydxn 🇨🇦 952 68 416ms 5 May 2022 91st GrayJoKing 🇦🇺 952 68 15ms 15 Nov 2022 91st Bubbler-4 952 68 14ms 15 Nov 2022 91st JayXon 🇺🇸 952 68 16ms 7 Mar 2023 91st Rubiksmath 952 68 14ms 14 Aug 2023 96th ovs-code 🇩🇪 950 61 265ms 5 Aug 2024 97th Lydxn 🇨🇦 950 82 366ms 6 May 2022 97th JayXon 🇺🇸 950 82 406ms 9 May 2022 99th Lydxn 🇨🇦 949 59 9ms 6 May 2022 100th Lydxn 🇨🇦 948 55 801ms 16 Jan 2024 100th ovs-code 🇩🇪 948 55 712ms 16 Jan 2024 100th Steffan153 🇫🇮 948 55 425ms 16 Jan 2024 100th kg583 🇺🇸 948 55 489ms 16 Feb 2024 100th Shanethegamer 🇺🇸 948 55 467ms 24 Mar 2024 100th pardouin 🇫🇷 948 55 538ms 30 Jun 2024 100th JayXon 🇺🇸 948 55 421ms 17 Aug 2024 100th sean-niemann 🇺🇸 948 55 474ms 24 Jan 2025 108th primo-ppcg 🇹🇭 947 49 7ms 5 May 2022 108th Lydxn 🇨🇦 947 49 7ms 8 May 2022 110th JayXon 🇺🇸 947 88 331ms 24 Sep 2025 111th lyphyser 946 46 52ms 13 Jan 2024 111th AdrienHache 🇫🇷 946 46 51ms 9 Apr 2024 113th JayXon 🇺🇸 945 88 154ms 17 Oct 2022 113th acotis 945 88 130ms 9 Jun 2025 113th kumavale 945 88 125ms 7 Oct 2025 116th saito-ta 🇯🇵 944 49 61ms 13 May 2022 116th Lydxn 🇨🇦 944 49 65ms 28 May 2022 118th JayXon 🇺🇸 943 69 5ms 17 Oct 2022 118th Lydxn 🇨🇦 943 69 5ms 4 Feb 2023 120th canissimia 🇦🇶 941 50 41ms 5 May 2022 120th ovs-code 🇩🇪 941 50 279ms 7 May 2022 120th sisyphus-ppcg 🇦🇺 941 50 37ms 20 Feb 2023 120th Steffan153 🇫🇮 941 50 42ms 20 Jul 2024 120th sean-niemann 🇺🇸 941 50 41ms 9 Jun 2025 120th pardouin 🇫🇷 941 50 50ms 22 Aug 2025 126th canissimia 🇦🇶 940 51 927ms 6 May 2022 126th Lydxn 🇨🇦 940 51 1,001ms 6 May 2022 126th primo-ppcg 🇹🇭 940 51 930ms 6 May 2022 126th pardouin 🇫🇷 940 51 953ms 12 Apr 2025 130th inventshah 939 57 10ms 4 May 2022 130th itsh01 939 57 11ms 17 May 2022 130th Natanaelel 🇸🇪 939 57 11ms 16 Jun 2022 130th Attero 🇸🇪 939 57 10ms 3 Aug 2022 130th SirFireball3521 939 57 10ms 26 Jan 2023 130th Kacarott 🇦🇺 939 57 13ms 24 Mar 2023 130th nathanadams 🇳🇿 939 57 10ms 24 Apr 2023 130th hacker112 🇸🇪 939 57 13ms 20 Jun 2024 130th thisishowmymindworks 🇳🇴 939 57 11ms 28 Jun 2024 130th Salutations45 939 57 13ms 18 Nov 2024 130th daniel-cardone 939 57 10ms 3 Jul 2025 130th CaedenHarper 🇨🇦 939 57 11ms 28 Sep 2025 130th BrunoVisnadi 🇧🇷 939 57 11ms 23 days ago 130th Laellekoenig 939 57 10ms 22 days ago 130th JOrE20 939 57 11ms 8 days ago 145th primo-ppcg 🇹🇭 939 58 5ms 13 Nov 2022 145th clockworknazo 939 58 8ms 15 Nov 2022 145th Lydxn 🇨🇦 939 58 5ms 7 Feb 2023 145th xsot 🇸🇬 939 58 6ms 28 Jun 2024 145th Salutations45 939 58 8ms 18 Dec 2024 150th nwellnhof 🇩🇪 938 69 25ms 4 May 2022 First Prev 76–150 of 3,460 Next Last