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 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 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 899th targrik 884 110 248ms 30 Jun 2025 902nd steffan-polygolf 883 74 130ms 14 Feb 2024 903rd kg583 🇺🇸 883 84 17ms 30 Jul 2025 904th Irratix 🇳🇱 883 96 53ms 4 May 2022 904th MeWhenI 🇻🇦 883 96 56ms 1 Jun 2022 904th janbehrens 🇩🇪 883 96 54ms 21 Apr 2023 904th Shanethegamer 🇺🇸 883 96 56ms 15 May 2023 904th Yewzir 🇧🇪 883 96 57ms 11 Nov 2023 904th MateuszPietrzak 🇵🇱 883 96 56ms 18 Nov 2023 904th kkoenig 883 96 55ms 21 Dec 2023 904th BlankSpruce 883 96 58ms 20 Aug 2024 904th fuzzylojik-golf 🇺🇸 883 96 63ms 14 Jun 2025 913th Shanethegamer 🇺🇸 882 51 405ms 15 May 2023 914th GrayJoKing 🇦🇺 882 60 142ms 24 Oct 2024 915th Shanethegamer 🇺🇸 881 73 90ms 8 May 2025 915th DialFrost 🇸🇬 881 73 100ms 3 Jun 2025 915th edsrzf 🇳🇿 881 73 101ms 4 Jul 2025 918th GrayJoKing 🇦🇺 881 84 53ms 19 Jun 2022 918th primo-ppcg 🇹🇭 881 84 48ms 29 Jun 2022 920th johnnythedoggie 880 72 88ms 13 May 2022 920th kaascevich 880 72 81ms 8 Jul 2025 922nd Grrisly 879 74 4ms 25 Mar 2024 923rd Shanethegamer 🇺🇸 879 142 919ms 27 Mar 2025 923rd DialFrost 🇸🇬 879 142 832ms 28 Mar 2025 923rd emgordon154 879 142 887ms 10 Apr 2025 926th primo-ppcg 🇹🇭 879 193 104ms 14 Aug 2025 927th dokutan 878 62 5ms 28 Apr 2025 928th Shanethegamer 🇺🇸 878 66 189ms 4 May 2022 928th scpchicken 🇵🇼 878 66 328ms 5 May 2022 928th sisyphus-ppcg 🇦🇺 878 66 170ms 6 May 2022 928th Natanaelel 🇸🇪 878 66 159ms 15 Jun 2022 928th Z-snails 878 66 339ms 27 Feb 2023 928th Jeremy-Stafford 878 66 333ms 27 Feb 2023 928th alomiF 878 66 367ms 1 Sep 2023 928th btnlq 878 66 144ms 17 Oct 2023 936th DialFrost 🇸🇬 878 86 49ms 24 Oct 2024 936th stefangimmillaro 878 86 49ms 14 Jan 2025 938th c0d3-4-F00d 🇩🇪 877 61 11ms 6 May 2022 938th jackkav 877 61 11ms 26 Jun 2022 938th TechNolaByte 877 61 11ms 6 Jul 2022 938th Heathcorp 🇦🇺 877 61 10ms 17 Jul 2022 938th C0de5mith 🇺🇸 877 61 11ms 3 Aug 2022 938th sebipopa 🇷🇴 877 61 10ms 18 Aug 2022 938th moikaturns 🇬🇧 877 61 14ms 25 Sep 2022 938th FlorianCassayre 🇫🇷 877 61 11ms 27 Sep 2022 938th Mazn3k 877 61 10ms 1 Feb 2023 938th tvcv901 877 61 11ms 22 Mar 2023 938th unfinishedprogram 877 61 11ms 19 Jul 2023 938th snoozingnewt 🇺🇸 877 61 11ms 23 Sep 2023 938th funnyboy-roks 877 61 10ms 9 May 2024 938th bac0id 877 61 9ms 29 Jun 2024 938th madex 🇩🇪 877 61 11ms 9 Jul 2024 938th FortuiteMan 🇫🇷 877 61 10ms 10 Oct 2024 938th RobertHoeh 877 61 11ms 5 Apr 2025 938th LvLError 877 61 11ms 29 May 2025 938th Lv0Sys 🇵🇱 877 61 12ms 30 May 2025 938th miles-evan 877 61 13ms 5 Aug 2025 938th alexsave 877 61 12ms 26 days ago 959th guilhem-roy 🇫🇷 877 76 25ms 5 May 2022 959th NewDefectus 🇮🇱 877 76 22ms 6 May 2022 959th CuboidRaptor 🇨🇦 877 76 24ms 25 May 2022 959th TheSmilingTurtle 877 76 27ms 5 Jun 2022 959th Romain-1 🇫🇷 877 76 19ms 8 Jun 2022 959th jhpaques 🇫🇷 877 76 23ms 30 Jul 2022 959th chriscianfarani 877 76 22ms 10 Aug 2022 959th eshilo-draper 877 76 28ms 13 Sep 2022 959th suwat513 877 76 20ms 22 Sep 2022 959th Jaydosu 877 76 23ms 14 Nov 2022 959th tails618 877 76 28ms 2 Dec 2022 959th KevinLyvers 877 76 22ms 17 Dec 2022 959th nayakrujul 877 76 21ms 3 Jan 2023 959th CheeseCake628 🇳🇴 877 76 22ms 8 Jan 2023 959th CatsAreFluffy 877 76 25ms 18 Feb 2023 959th adamnielson42 🇺🇸 877 76 20ms 1 Mar 2023 959th Schreipfelerer 877 76 28ms 9 Apr 2023 First Prev 901–975 of 3,430 Next Last