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 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 Topological Sort 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 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 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 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 Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 522nd GolfingSuccess 🇬🇷 907 60 16 Oct 2024 522nd sean-niemann 🇺🇸 907 60 7 Mar 2025 528th edsrzf 🇳🇿 907 72 26 days ago 529th Shanethegamer 🇺🇸 907 77 15 May 2023 530th KrausRaus 🇺🇸 906 59 4 May 2022 530th voytxt 🇨🇿 906 59 4 May 2022 530th KingSkyrock 🇺🇸 906 59 18 May 2022 530th ZakkkkAttackkkk 🇵🇭 906 59 14 Jul 2022 530th aksyristos 906 59 28 Oct 2022 530th nstearns96 🇬🇧 906 59 28 Nov 2022 530th janbehrens 🇩🇪 906 59 17 May 2023 530th Shanethegamer 🇺🇸 906 59 25 May 2023 530th Maznek 906 59 26 Jun 2023 530th SpiritAxolotl 🇺🇸 906 59 20 Mar 2024 530th Andrey-Plotnikov 906 59 19 May 2024 530th emgordon154 906 59 5 Aug 2024 530th duckyluuk 🇳🇱 906 59 3 Oct 2024 530th lifthrasiir 🇰🇷 906 59 23 Nov 2024 530th fuzzylojik-golf 🇺🇸 906 59 1 Jun 2025 530th acollett89 906 59 17 Jun 2025 546th GolfingSuccess 🇬🇷 906 64 14 Dec 2024 546th MeWhenI 🇻🇦 906 64 24 Dec 2024 548th GrayJoKing 🇦🇺 906 71 10 Aug 2023 549th ovs-code 🇩🇪 906 84 25 Sep 2022 549th GrayJoKing 🇦🇺 906 84 11 Aug 2023 551st MeWhenI 🇻🇦 906 110 9 Feb 2023 551st edsrzf 🇳🇿 906 110 28 Nov 2024 551st targrik 906 110 30 Jun 2025 554th MeWhenI 🇻🇦 905 63 5 May 2022 555th marshallward 🇺🇸 905 83 10 May 2022 556th krcs 🇵🇱 905 86 10 May 2022 556th billings7 🇬🇧 905 86 15 May 2022 556th revlayle 🇺🇸 905 86 7 Dec 2022 556th Widgitty 905 86 1 Sep 2023 560th m-tkach 🇺🇦 905 90 7 Dec 2023 561st nipzu 904 48 8 Sep 2024 562nd shinh 904 52 29 Jun 2022 562nd pardouin 🇫🇷 904 52 12 Apr 2025 564th Lydxn 🇨🇦 904 64 1 Apr 2023 565th DialFrost 🇸🇬 904 77 27 Feb 2025 566th Steffan153 🇫🇮 904 80 15 Nov 2022 566th error256 904 80 8 Apr 2025 568th Lydxn 🇨🇦 903 70 7 May 2022 569th MeWhenI 🇻🇦 903 71 20 Aug 2024 570th Shanethegamer 🇺🇸 903 72 4 May 2022 570th jared-hughes 903 72 4 May 2022 570th Waffle3z 903 72 5 May 2022 570th m-tkach 🇺🇦 903 72 16 Oct 2022 570th GrayJoKing 🇦🇺 903 72 22 Oct 2022 570th emplv 🇱🇻 903 72 27 Oct 2022 570th sean-niemann 🇺🇸 903 72 7 Mar 2025 570th Blendi-Goose 903 72 16 Mar 2025 570th edsrzf 🇳🇿 903 72 12 Apr 2025 579th Shanethegamer 🇺🇸 902 82 19 Dec 2023 579th edsrzf 🇳🇿 902 82 6 Jan 2025 581st stefangimmillaro 902 92 24 Oct 2023 581st inverseLorentz 🇦🇺 902 92 27 May 2024 581st sean-niemann 🇺🇸 902 92 8 Jun 2025 584th bwat2 902 130 5 May 2022 584th FlorianCassayre 🇫🇷 902 130 20 Sep 2022 584th Widgitty 902 130 29 May 2023 587th Steffan153 🇫🇮 901 82 1 Apr 2023 587th sean-niemann 🇺🇸 901 82 12 Jul 2024 589th michael-pruglo 🇺🇦 901 94 5 Jul 2022 589th zygoloid 901 94 5 Aug 2024 591st Lydxn 🇨🇦 900 69 12 Sep 2022 591st GrayJoKing 🇦🇺 900 69 12 Sep 2022 591st btnlq 900 69 24 Sep 2022 594th TobyBoyne 🇬🇧 900 74 4 May 2022 594th RDShah 900 74 6 May 2022 594th Indivicivet 900 74 9 May 2022 594th CedricGebistorf 900 74 9 May 2022 594th ophact 900 74 11 May 2022 594th ImpressedByRocks 900 74 17 May 2022 594th LHuitre 900 74 2 Jun 2022 Prev 526–600 of 3,214 Next