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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 526th m-tkach 🇺🇦 908 90 7 Dec 2023 527th Betuaredead 907 60 5 Jan 2023 527th Yewzir 🇧🇪 907 60 12 Feb 2023 527th Steffan153 🇫🇮 907 60 23 Feb 2023 527th DialFrost 🇸🇬 907 60 30 Jul 2024 527th GolfingSuccess 🇬🇷 907 60 16 Oct 2024 527th sean-niemann 🇺🇸 907 60 7 Mar 2025 533rd MeWhenI 🇻🇦 907 110 9 Feb 2023 533rd edsrzf 🇳🇿 907 110 28 Nov 2024 533rd targrik 907 110 30 Jun 2025 536th nipzu 906 48 8 Sep 2024 537th KrausRaus 🇺🇸 906 59 4 May 2022 537th voytxt 🇨🇿 906 59 4 May 2022 537th KingSkyrock 🇺🇸 906 59 18 May 2022 537th ZakkkkAttackkkk 🇵🇭 906 59 14 Jul 2022 537th aksyristos 906 59 28 Oct 2022 537th nstearns96 🇬🇧 906 59 28 Nov 2022 537th janbehrens 🇩🇪 906 59 17 May 2023 537th Shanethegamer 🇺🇸 906 59 25 May 2023 537th Maznek 906 59 26 Jun 2023 537th SpiritAxolotl 🇺🇸 906 59 20 Mar 2024 537th Andrey-Plotnikov 906 59 19 May 2024 537th emgordon154 906 59 5 Aug 2024 537th duckyluuk 🇳🇱 906 59 3 Oct 2024 537th lifthrasiir 🇰🇷 906 59 23 Nov 2024 537th fuzzylojik-golf 🇺🇸 906 59 1 Jun 2025 537th acollett89 906 59 17 Jun 2025 537th CaedenHarper 🇨🇦 906 59 23 Aug 2025 537th iczelia 🇩🇪 906 59 4 days ago 555th shinh 905 52 29 Jun 2022 556th albanian-laundromat 905 55 5 days ago 557th Lydxn 🇨🇦 905 64 1 Apr 2023 558th Lydxn 🇨🇦 905 70 7 May 2022 559th MeWhenI 🇻🇦 905 71 20 Aug 2024 560th Steffan153 🇫🇮 905 80 15 Nov 2022 560th error256 905 80 8 Apr 2025 562nd krcs 🇵🇱 905 86 10 May 2022 562nd billings7 🇬🇧 905 86 15 May 2022 562nd revlayle 🇺🇸 905 86 7 Dec 2022 562nd Widgitty 905 86 1 Sep 2023 566th Shanethegamer 🇺🇸 904 72 4 May 2022 566th jared-hughes 904 72 4 May 2022 566th Waffle3z 904 72 5 May 2022 566th m-tkach 🇺🇦 904 72 16 Oct 2022 566th GrayJoKing 🇦🇺 904 72 22 Oct 2022 566th emplv 🇱🇻 904 72 27 Oct 2022 566th sean-niemann 🇺🇸 904 72 7 Mar 2025 566th Blendi-Goose 904 72 16 Mar 2025 566th edsrzf 🇳🇿 904 72 12 Apr 2025 575th Shanethegamer 🇺🇸 904 82 19 Dec 2023 575th edsrzf 🇳🇿 904 82 6 Jan 2025 577th edsrzf 🇳🇿 904 83 14 Jan 2025 577th kg583 🇺🇸 904 83 14 Feb 2025 579th stefangimmillaro 903 92 24 Oct 2023 579th inverseLorentz 🇦🇺 903 92 27 May 2024 579th sean-niemann 🇺🇸 903 92 8 Jun 2025 582nd Lydxn 🇨🇦 902 69 12 Sep 2022 582nd GrayJoKing 🇦🇺 902 69 12 Sep 2022 582nd btnlq 902 69 24 Sep 2022 585th Steffan153 🇫🇮 902 82 1 Apr 2023 585th sean-niemann 🇺🇸 902 82 12 Jul 2024 587th michael-pruglo 🇺🇦 902 94 5 Jul 2022 587th zygoloid 902 94 5 Aug 2024 589th TobyBoyne 🇬🇧 901 74 4 May 2022 589th RDShah 901 74 6 May 2022 589th Indivicivet 901 74 9 May 2022 589th CedricGebistorf 901 74 9 May 2022 589th ophact 901 74 11 May 2022 589th ImpressedByRocks 901 74 17 May 2022 589th LHuitre 901 74 2 Jun 2022 589th neihousaigaai 901 74 8 Jun 2022 589th rowboat1 901 74 10 Jun 2022 589th inverseLorentz 🇦🇺 901 74 13 Jun 2022 589th yzhs 🇩🇪 901 74 16 Jun 2022 589th clementblaudeau 901 74 29 Jun 2022 Prev 526–600 of 3,355 Next