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 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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 64th emgordon154 963 27 13 Sep 2024 77th Lydxn 🇨🇦 959 49 4 May 2022 77th JayXon 🇺🇸 959 49 17 Oct 2022 77th GrayJoKing 🇦🇺 959 49 15 Nov 2022 80th GrayJoKing 🇦🇺 958 38 5 May 2022 80th MeWhenI 🇻🇦 958 38 4 Mar 2025 82nd antimon2 🇯🇵 957 45 17 Nov 2024 83rd DelaneyJM 957 47 7 Apr 2025 83rd KevinMarquette 🇺🇸 957 47 7 Apr 2025 83rd sean-niemann 🇺🇸 957 47 7 Apr 2025 83rd corbob 🇨🇦 957 47 8 Apr 2025 83rd jborean93 957 47 9 Apr 2025 83rd bitsandbeyond 🇳🇱 957 47 8 Jun 2025 83rd DialFrost 🇸🇬 957 47 8 Jun 2025 90th akshatj27 🇦🇶 955 56 4 May 2022 90th didion0 🇺🇸 955 56 5 May 2022 90th NewDefectus 🇮🇱 955 56 6 May 2022 90th lynn 955 56 6 May 2022 90th uttumuttu 🇫🇮 955 56 24 May 2022 90th jared-hughes 955 56 6 Jul 2022 90th 051 🇸🇬 955 56 8 Aug 2022 90th BambooleanLogic 🇸🇪 955 56 12 Oct 2022 90th makinde 955 56 21 Oct 2022 90th DialFrost 🇸🇬 955 56 14 Nov 2022 90th AlephSquirrel 955 56 15 Feb 2023 90th dmrichwa 🇺🇸 955 56 10 Jul 2023 90th tayloia 🇬🇧 955 56 10 Jul 2023 90th Argeento 🇵🇱 955 56 25 Aug 2023 90th weliveinhell 🇭🇹 955 56 2 Oct 2023 90th coreynash 955 56 6 Oct 2023 90th dylanarmstrong 955 56 10 Dec 2023 90th two-bad 🇬🇧 955 56 23 Feb 2024 90th mehbark 955 56 27 Jul 2024 90th madeforlosers 955 56 4 Nov 2024 90th XenThe 🇬🇧 955 56 6 Jun 2025 111th primo-ppcg 🇹🇭 954 41 5 May 2022 112th 2bular 952 32 17 Oct 2024 113th MichalMarsalek 🇨🇿 952 70 5 May 2022 113th primo-ppcg 🇹🇭 952 70 5 May 2022 113th SirBogman 🇺🇸 952 70 5 May 2022 113th prplz 🇦🇺 952 70 5 May 2022 113th Irratix 🇳🇱 952 70 7 May 2022 113th rak1507 🇬🇧 952 70 7 May 2022 113th inventshah 952 70 9 May 2022 113th k3w1k0d3r 952 70 22 Jun 2022 113th ZakkkkAttackkkk 🇵🇭 952 70 14 Jul 2022 113th Bonjour27891 🇻🇳 952 70 14 Jul 2022 113th OllieBoyne 🇬🇧 952 70 19 Jul 2022 113th bricknellj 952 70 25 Jul 2022 113th wen1now 952 70 8 Aug 2022 113th 051 🇸🇬 952 70 8 Aug 2022 113th Sp3000 🇦🇺 952 70 8 Aug 2022 113th betaveros 952 70 9 Aug 2022 113th shelerr 952 70 9 Sep 2022 113th stewSquared 🇺🇸 952 70 27 Sep 2022 113th orthoplex 🇨🇽 952 70 9 Oct 2022 113th 5quiwyrm 952 70 19 Oct 2022 113th myfatemi04 952 70 4 Nov 2022 113th kevinmchung 952 70 4 Nov 2022 113th FlorianCassayre 🇫🇷 952 70 7 Nov 2022 113th fourth-bit 952 70 29 Nov 2022 113th QuincyNash 🇺🇸 952 70 29 Nov 2022 113th aksyristos 952 70 25 Dec 2022 113th thizanne 952 70 27 Dec 2022 113th Alex-x90 🇺🇸 952 70 20 Jan 2023 113th bob-th 952 70 24 Jan 2023 113th SirFireball3521 952 70 25 Jan 2023 113th stefangimmillaro 952 70 6 Feb 2023 113th Seek64 🇩🇪 952 70 7 Feb 2023 113th FieryIceStickie 952 70 3 Apr 2023 113th MeWhenI 🇻🇦 952 70 30 Apr 2023 113th fgrosshans 🇫🇷 952 70 5 May 2023 113th Shanethegamer 🇺🇸 952 70 25 May 2023 113th InigoK 🇺🇸 952 70 14 Jun 2023 113th quimey 952 70 15 Jun 2023 Prev 76–150 of 3,272 Next
