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 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 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 Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 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 Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 296th Re-Adventures 🇮🇳 928 84 15 days ago 296th janbehrens 🇩🇪 928 84 14 days ago 303rd sisyphus-ppcg 🇦🇺 927 50 31 Jan 2023 303rd saito-ta 🇯🇵 927 50 12 Dec 2024 305th JayXon 🇺🇸 927 57 19 Aug 2024 306th Lydxn 🇨🇦 927 70 17 Oct 2022 306th JayXon 🇺🇸 927 70 17 Oct 2022 308th Steffan153 🇫🇮 926 67 19 Aug 2024 308th JayXon 🇺🇸 926 67 19 Aug 2024 310th scpchicken 🇵🇼 925 72 4 May 2022 310th sultan 925 72 6 Jun 2022 310th annaproxy 925 72 22 Aug 2022 310th BlankSpruce 925 72 9 Sep 2022 310th ValentinCassayre 925 72 8 Oct 2022 310th commandblockguy 🇺🇸 925 72 3 Nov 2022 310th mathb0y512 925 72 1 Dec 2022 310th NoahBolohan 🇨🇦 925 72 28 Feb 2023 310th neel11235813 925 72 8 Mar 2023 310th Kacarott 🇦🇺 925 72 24 Mar 2023 310th Fracture17 925 72 8 Apr 2023 310th ayushdewan 925 72 7 May 2023 310th PeterTillema 🇳🇱 925 72 17 Oct 2023 310th Glinte 925 72 11 Dec 2023 310th nanatsu8 925 72 11 May 2024 310th thej10n 925 72 12 Jun 2024 310th duckyluuk 🇳🇱 925 72 13 Jun 2024 310th fuzzylojik-golf 🇺🇸 925 72 14 Feb 2025 310th tobeannouncd 925 72 5 days ago 329th Bubbler-4 923 33 6 May 2022 329th rak1507 🇬🇧 923 33 8 May 2022 329th ngn 🇧🇬 923 33 11 May 2022 332nd btnlq 922 59 6 Nov 2022 333rd ovs-code 🇩🇪 922 67 13 Dec 2022 333rd Steffan153 🇫🇮 922 67 18 Dec 2022 333rd Lydxn 🇨🇦 922 67 4 Feb 2023 333rd sean-niemann 🇺🇸 922 67 7 Mar 2025 337th Luca2812 922 127 12 Dec 2022 337th plastic-bottle 922 127 13 Sep 2023 337th h3ra993huskp 🇯🇵 922 127 17 Sep 2023 337th tigerdan2 🇩🇪 922 127 19 Dec 2023 341st nwellnhof 🇩🇪 921 51 4 May 2022 341st primo-ppcg 🇹🇭 921 51 6 May 2022 341st radarek 🇵🇱 921 51 8 May 2022 341st janlelis 921 51 10 May 2022 341st Natanaelel 🇸🇪 921 51 2 Jun 2022 341st sean-niemann 🇺🇸 921 51 7 Mar 2025 347th uiamn 921 58 6 Sep 2022 347th 5quiwyrm 921 58 29 Sep 2022 347th alasdair-greenland 921 58 13 Jan 2023 350th Lydxn 🇨🇦 921 90 6 May 2022 351st Lydxn 🇨🇦 921 108 6 May 2022 351st JayXon 🇺🇸 921 108 9 May 2022 353rd xnor-gate 919 63 20 Jan 2025 354th MichalMarsalek 🇨🇿 919 71 5 May 2022 354th Lydxn 🇨🇦 919 71 7 May 2022 354th GrayJoKing 🇦🇺 919 71 8 May 2022 354th JayXon 🇺🇸 919 71 8 May 2022 354th Steffan153 🇫🇮 919 71 9 Mar 2023 354th Shanethegamer 🇺🇸 919 71 15 May 2023 354th MeWhenI 🇻🇦 919 71 8 Aug 2023 354th sean-niemann 🇺🇸 919 71 9 Jan 2025 362nd Steffan153 🇫🇮 919 76 15 May 2023 362nd primo-ppcg 🇹🇭 919 76 15 May 2023 362nd Lydxn 🇨🇦 919 76 22 May 2023 362nd GrayJoKing 🇦🇺 919 76 24 Aug 2023 366th Herbert00709 🇵🇱 919 92 17 Nov 2023 366th 4QT0R 919 92 23 Nov 2023 366th ovs-code 🇩🇪 919 92 3 Jun 2024 369th primo-ppcg 🇹🇭 917 61 6 May 2022 369th sisyphus-ppcg 🇦🇺 917 61 14 Jul 2022 371st tomtheisen 🇺🇸 917 85 20 days ago 372nd Steffan153 🇫🇮 915 71 10 Dec 2022 373rd Steffan153 🇫🇮 914 71 14 Oct 2022 373rd Shanethegamer 🇺🇸 914 71 15 Oct 2022 373rd stefangimmillaro 914 71 16 Oct 2022 Prev 301–375 of 3,000 Next