Collatz in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 641st JayXon 🇺🇸 877 157 1,772ms 14 Sep 2025 642nd mousetail 🇳🇱 876 40 66ms 29 Aug 2025 643rd GrayJoKing 🇦🇺 876 84 35ms 19 Jun 2022 643rd primo-ppcg 🇹🇭 876 84 36ms 29 Jun 2022 643rd MeWhenI 🇻🇦 876 84 38ms 30 Dec 2025 646th Shanethegamer 🇺🇸 875 51 472ms 15 May 2023 647th c0d3-4-F00d 🇩🇪 874 61 11ms 6 May 2022 647th jackkav 874 61 10ms 26 Jun 2022 647th TechNolaByte 874 61 10ms 6 Jul 2022 647th Heathcorp 🇦🇺 874 61 11ms 17 Jul 2022 647th C0de5mith 🇺🇸 874 61 11ms 3 Aug 2022 647th sebipopa 🇷🇴 874 61 11ms 18 Aug 2022 647th moikaturns 🇬🇧 874 61 10ms 25 Sep 2022 647th FlorianCassayre 🇫🇷 874 61 12ms 27 Sep 2022 647th Mazn3k 874 61 11ms 1 Feb 2023 647th tvcv901 874 61 11ms 22 Mar 2023 647th unfinishedprogram 874 61 11ms 19 Jul 2023 647th snoozingnewt 🇨🇦 874 61 11ms 23 Sep 2023 647th funnyboy-roks 874 61 11ms 9 May 2024 647th bac0id 874 61 10ms 29 Jun 2024 647th FortuiteMan 🇫🇷 874 61 11ms 10 Oct 2024 647th RobertHoeh 874 61 10ms 5 Apr 2025 647th LvLError 874 61 11ms 29 May 2025 647th miles-evan 874 61 10ms 5 Aug 2025 647th alexsave 874 61 10ms 13 Oct 2025 666th NerdyMcNerd42 874 64 20ms 26 Oct 2022 666th tpasfieldERAU 874 64 23ms 14 Nov 2022 666th CheeseCake628 🇳🇴 874 64 23ms 6 Jan 2023 666th adamnielson42 🇺🇸 874 64 19ms 25 Apr 2023 666th nathsou 🇫🇷 874 64 21ms 2 Sep 2023 666th zwxzwxzwx21 874 64 24ms 30 Jan 2024 666th steffan-polygolf 874 64 21ms 8 Mar 2024 666th Jacob385 874 64 59ms 4 Apr 2024 666th gallium-gonzollium 874 64 28ms 26 Aug 2024 675th dokutan 873 62 5ms 28 Apr 2025 676th Shanethegamer 🇺🇸 873 66 172ms 4 May 2022 676th scpchicken 🇵🇼 873 66 254ms 5 May 2022 676th sisyphus-ppcg 🇦🇺 873 66 173ms 6 May 2022 676th Natanaelel 🇸🇪 873 66 144ms 15 Jun 2022 676th Z-snails 873 66 254ms 27 Feb 2023 676th Jeremy-Stafford 873 66 258ms 27 Feb 2023 676th alomiF 873 66 293ms 1 Sep 2023 676th btnlq 873 66 145ms 17 Oct 2023 676th Shengxuan-Zhang 873 66 278ms 20 Feb 2026 685th johnnythedoggie 873 72 96ms 13 May 2022 685th kaascevich 873 72 96ms 8 Jul 2025 685th madeforlosers 873 72 102ms 15 days ago 688th DialFrost 🇸🇬 873 73 149ms 3 Jun 2025 689th c0d3-4-F00d 🇩🇪 873 89 364ms 5 May 2022 689th fkantelberg 873 89 374ms 15 Jul 2023 689th bac0id 873 89 354ms 26 Sep 2023 689th TRexOnGit 873 89 364ms 16 Feb 2024 693rd inventshah 873 97 61ms 6 May 2022 693rd roupiq 🇵🇱 873 97 60ms 22 Nov 2023 693rd emgordon154 873 97 59ms 8 Feb 2026 696th HPWiz 🇳🇿 872 49 265ms 4 May 2022 696th JayXon 🇺🇸 872 49 250ms 5 May 2022 696th Steffan153 🇫🇮 872 49 256ms 10 Dec 2022 696th ovs-code 🇩🇪 872 49 403ms 24 Oct 2023 696th sean-niemann 🇺🇸 872 49 268ms 12 Jul 2024 701st DialFrost 🇸🇬 872 76 82ms 17 Mar 2025 702nd DialFrost 🇸🇬 872 86 40ms 24 Oct 2024 702nd stefangimmillaro 872 86 39ms 14 Jan 2025 704th janbehrens 🇩🇪 872 90 467ms 21 Apr 2023 704th Yewzir 🇧🇪 872 90 459ms 22 Apr 2023 704th Ripick 872 90 459ms 27 Nov 2024 704th emgordon154 872 90 476ms 10 Dec 2025 708th MeWhenI 🇻🇦 872 109 286ms 9 Feb 2023 709th GolfingSuccess 🇬🇷 870 71 2ms 5 May 2022 709th emplv 🇱🇻 870 71 2ms 5 May 2022 709th JayXon 🇺🇸 870 71 2ms 7 May 2022 709th m-tkach 🇺🇦 870 71 2ms 15 May 2022 709th nwellnhof 🇩🇪 870 71 2ms 5 Jun 2022 709th Irratix 🇳🇱 870 71 2ms 13 Jun 2022 709th michael-pruglo 🇺🇦 870 71 2ms 13 Jul 2022 709th stefangimmillaro 870 71 2ms 2 Jun 2023 709th kkoenig 870 71 2ms 21 Dec 2023 709th JohandeRuiter 🇳🇱 870 71 2ms 14 Sep 2024 709th masinag 🇮🇹 870 71 2ms 6 Oct 2024 720th AlephSquirrel 870 80 12ms 20 Apr 2023 First Prev 641–720 of 3,631 Next Last