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 292nd Bonjour27891 🇻🇳 925 70 19ms 14 Jul 2022 292nd OllieBoyne 🇬🇧 925 70 19ms 19 Jul 2022 292nd bricknellj 925 70 17ms 25 Jul 2022 292nd wen1now 925 70 23ms 8 Aug 2022 292nd 051 🇸🇬 925 70 21ms 8 Aug 2022 292nd Sp3000 🇦🇺 925 70 18ms 8 Aug 2022 292nd betaveros 925 70 21ms 9 Aug 2022 292nd shelerr 925 70 18ms 9 Sep 2022 292nd stewSquared 🇺🇸 925 70 19ms 27 Sep 2022 292nd orthoplex 🇨🇽 925 70 24ms 9 Oct 2022 292nd 5quiwyrm 925 70 18ms 19 Oct 2022 292nd myfatemi04 925 70 20ms 4 Nov 2022 292nd kevinmchung 925 70 18ms 4 Nov 2022 292nd FlorianCassayre 🇫🇷 925 70 18ms 7 Nov 2022 292nd fourth-bit 925 70 17ms 29 Nov 2022 292nd QuincyNash 🇺🇸 925 70 20ms 29 Nov 2022 292nd aksyristos 925 70 19ms 25 Dec 2022 292nd thizanne 925 70 19ms 27 Dec 2022 292nd Alex-x90 🇺🇸 925 70 21ms 20 Jan 2023 292nd bob-th 925 70 19ms 24 Jan 2023 292nd SirFireball3521 925 70 15ms 25 Jan 2023 292nd stefangimmillaro 925 70 20ms 6 Feb 2023 292nd Seek64 🇩🇪 925 70 18ms 7 Feb 2023 292nd FieryIceStickie 925 70 20ms 3 Apr 2023 292nd MeWhenI 🇻🇦 925 70 19ms 30 Apr 2023 292nd fgrosshans 🇫🇷 925 70 18ms 5 May 2023 292nd Shanethegamer 🇺🇸 925 70 18ms 25 May 2023 292nd InigoK 🇺🇸 925 70 19ms 14 Jun 2023 292nd quimey 925 70 16ms 15 Jun 2023 292nd CornerMercury 🇬🇧 925 70 19ms 19 Jun 2023 292nd ndren 925 70 22ms 2 Aug 2023 292nd bizy-coder 925 70 19ms 14 Aug 2023 292nd janbehrens 🇩🇪 925 70 21ms 24 Nov 2023 292nd namelessiw 925 70 19ms 9 Jan 2024 292nd mathisfun271 925 70 19ms 13 Feb 2024 292nd Just4FunCoder 925 70 21ms 17 Feb 2024 292nd ThijsLuttikhuis 925 70 19ms 3 Mar 2024 292nd elgan65536 925 70 19ms 5 Mar 2024 292nd jtaxen 925 70 18ms 1 Apr 2024 292nd HumanoidCPU 925 70 18ms 6 May 2024 292nd abc7-12 925 70 19ms 6 May 2024 292nd ahmetdemirag 🇨🇾 925 70 18ms 9 Jun 2024 292nd FranklinJiaChen 925 70 19ms 4 Jul 2024 292nd 5cw 🇺🇸 925 70 18ms 13 Jul 2024 292nd CaedenHarper 🇨🇦 925 70 19ms 3 Aug 2024 292nd emgordon154 925 70 18ms 5 Aug 2024 292nd dokutan 925 70 20ms 9 Aug 2024 292nd jatloe 925 70 22ms 26 Aug 2024 292nd lgrandco 925 70 18ms 9 Oct 2024 292nd snydej 925 70 21ms 21 Nov 2024 292nd erikji 925 70 20ms 4 Feb 2025 292nd CutSandstone 925 70 19ms 4 Feb 2025 292nd albanian-laundromat 925 70 19ms 12 Apr 2025 292nd xsot 🇸🇬 925 70 21ms 3 May 2025 292nd fuzzylojik-golf 🇺🇸 925 70 18ms 14 Jun 2025 292nd smilesformiles3 925 70 19ms 14 Jun 2025 292nd KasperKivimaeki 🇫🇮 925 70 20ms 30 Jun 2025 292nd adaGrad1 925 70 21ms 10 Aug 2025 292nd EthanJantz 925 70 18ms 10 Aug 2025 292nd qpwoeirut 925 70 17ms 10 Aug 2025 292nd katss2 925 70 19ms 17 Aug 2025 292nd intgrah 925 70 18ms 23 Sep 2025 292nd ryyyn 🇺🇸 925 70 20ms 16 days ago 292nd luuumine 🇫🇷 925 70 19ms 12 days ago 292nd Babafaba 925 70 18ms 8 days ago 366th Lydxn 🇨🇦 924 90 126ms 6 May 2022 367th Bubbler-4 923 33 2,581ms 6 May 2022 367th rak1507 🇬🇧 923 33 113ms 8 May 2022 367th ngn 🇧🇬 923 33 26ms 11 May 2022 367th zacjl 923 33 32ms 3 Jun 2025 367th GrayJoKing 🇦🇺 923 33 14ms 4 Jun 2025 372nd btnlq 923 59 8ms 6 Nov 2022 373rd nwellnhof 🇩🇪 922 51 50ms 4 May 2022 373rd primo-ppcg 🇹🇭 922 51 43ms 6 May 2022 373rd janlelis 922 51 39ms 10 May 2022 First Prev 301–375 of 3,464 Next Last