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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript 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 ><> 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 ALGOL 68 APL ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 480th kg583 🇺🇸 892 78 11ms 25 Sep 2025 482nd MichalMarsalek 🇨🇿 892 87 436ms 5 May 2022 482nd Kloppermand 🇩🇰 892 87 414ms 7 Oct 2022 482nd bwat2 892 87 397ms 6 Apr 2023 485th Ripick 891 73 133ms 8 May 2023 486th NickTheEASDude 🇺🇸 891 76 6ms 7 May 2024 486th edsrzf 🇳🇿 891 76 6ms 23 Dec 2025 486th Shanethegamer 🇺🇸 891 76 5ms 23 Dec 2025 486th jared-hughes 891 76 5ms 24 Dec 2025 486th Waffle3z 891 76 5ms 26 Dec 2025 486th Blendi-Goose 891 76 5ms 45 mins ago 492nd oeb25 891 93 121ms 16 May 2022 492nd snobee 🇨🇦 891 93 126ms 8 Dec 2022 492nd logvp 891 93 121ms 2 Jan 2024 492nd elgan65536 891 93 115ms 5 Mar 2024 492nd smartiel 891 93 127ms 12 Aug 2024 492nd trist224 🇫🇷 891 93 121ms 12 Aug 2024 492nd nullie 891 93 125ms 19 Dec 2024 492nd lolgeny 891 93 121ms 22 Feb 2025 500th GolfingSuccess 🇬🇷 891 95 57ms 5 May 2022 500th Alex-x90 🇺🇸 891 95 57ms 4 Dec 2022 500th Mandrzejy 🇵🇱 891 95 53ms 22 Mar 2024 503rd m-tkach 🇺🇦 891 117 25ms 7 May 2022 503rd Lydxn 🇨🇦 891 117 26ms 7 May 2022 505th p-zubieta 890 48 279ms 6 Mar 2024 506th Steffan153 🇫🇮 890 80 25ms 11 Dec 2023 507th KatieLG 🇬🇧 889 60 10ms 4 May 2022 507th ScottHamper 889 60 10ms 5 May 2022 507th Re-Adventures 🇮🇳 889 60 10ms 5 May 2022 507th 0x24a537r9 889 60 11ms 29 Jul 2022 507th stefangabos 🇷🇴 889 60 11ms 19 Aug 2022 507th eranws 889 60 10ms 10 Sep 2022 507th GeorgeStechman 🇬🇧 889 60 11ms 26 Sep 2022 507th BloodStormKnight 889 60 12ms 15 Oct 2022 507th dzshn 889 60 11ms 3 Dec 2022 507th biocommando 🇫🇮 889 60 10ms 20 Dec 2022 507th Betuaredead 889 60 10ms 5 Jan 2023 507th piano-miles 889 60 11ms 16 Jan 2023 507th Yewzir 🇧🇪 889 60 11ms 12 Feb 2023 507th shellbertt 🇨🇦 889 60 11ms 26 Feb 2023 507th zakariamouhid 889 60 11ms 20 May 2023 507th raphaelimahorn 889 60 11ms 23 Aug 2023 507th jbt 889 60 11ms 25 Dec 2023 507th olleicua 🇺🇸 889 60 10ms 15 Feb 2024 507th HumanoidCPU 889 60 11ms 3 May 2024 507th dokutan 889 60 10ms 13 Aug 2024 507th LostSyntax21 🇬🇧 889 60 11ms 10 Sep 2024 507th xyangst 889 60 9ms 28 Sep 2024 507th a6166231 🇨🇳 889 60 11ms 15 May 2025 507th Protothor 889 60 10ms 8 Jul 2025 507th SebassNoob 889 60 11ms 5 Aug 2025 507th levinwinter 889 60 14ms 22 Oct 2025 507th Cube14yt 889 60 10ms 16 Nov 2025 507th gigaprofisi 🇺🇸 889 60 9ms 17 Nov 2025 507th amazingalek 🇳🇴 889 60 11ms 20 Dec 2025 507th shandriy 889 60 11ms 14 days ago 537th Steffan153 🇫🇮 889 80 26ms 15 Nov 2022 537th error256 889 80 115ms 8 Apr 2025 539th Lydxn 🇨🇦 888 107 305ms 6 May 2022 539th CaedenHarper 🇨🇦 888 107 291ms 5 Oct 2025 541st canissimia 🇦🇶 888 204 16ms 25 Nov 2023 542nd Shanethegamer 🇺🇸 887 61 5ms 31 Oct 2022 542nd MeWhenI 🇻🇦 887 61 5ms 4 Nov 2022 544th P-Quentin 🇫🇷 887 63 20ms 3 Aug 2022 544th kaptsanovb 887 63 28ms 20 Apr 2023 544th fkantelberg 887 63 19ms 14 Jul 2023 544th VictorStenvers 🇳🇱 887 63 22ms 13 Nov 2023 544th 1231234md5 🇨🇳 887 63 20ms 14 Dec 2023 544th f-tucker 887 63 23ms 6 Feb 2024 544th JunkIce 887 63 24ms 24 Nov 2024 544th Kowalskiexe 🇵🇱 887 63 19ms 19 Apr 2025 544th 123mjb 887 63 24ms 2 Jun 2025 544th DrakeSeteraO 887 63 52ms 24 Oct 2025 544th enigma 887 63 34ms 21 Dec 2025 555th JayXon 🇺🇸 887 74 2,178ms 14 Nov 2024 556th jared-hughes 887 130 23ms 15 Dec 2024 557th lynn 886 65 283ms 5 May 2022 557th GrayJoKing 🇦🇺 886 65 250ms 5 May 2022 557th Sakisan 🇧🇪 886 65 178ms 6 May 2022 557th JayXon 🇺🇸 886 65 311ms 17 Oct 2022 First Prev 481–560 of 3,541 Next Last