The Mandelbrot hole will go live in approximately 25 hours. Why not try and solve it ahead of time?
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 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 Mandelbrot 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 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 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 Mandelbrot 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 288th KrausRaus 🇺🇸 930 126 9 Sep 2022 288th Betuaredead 930 126 5 Jan 2023 288th annaproxy 930 126 7 Jan 2023 288th Yewzir 🇧🇪 930 126 12 Feb 2023 288th Jacob385 930 126 4 Mar 2024 288th dokutan 930 126 17 Mar 2024 288th eMGeeneer 930 126 15 Jun 2024 288th mrondon8 930 126 2 Dec 2024 309th Natanaelel 🇸🇪 929 28 22 Jul 2022 309th SirBogman 🇺🇸 929 28 17 Sep 2022 311th ovs-code 🇩🇪 928 60 9 Oct 2023 311th GrayJoKing 🇦🇺 928 60 11 Oct 2023 311th Lydxn 🇨🇦 928 60 11 Oct 2023 311th GolfingSuccess 🇬🇷 928 60 16 Nov 2023 311th Steffan153 🇫🇮 928 60 28 Jan 2024 311th JayXon 🇺🇸 928 60 29 Jan 2024 311th rucin93 🇵🇱 928 60 10 Jul 2024 311th sean-niemann 🇺🇸 928 60 10 Jul 2024 319th MeWhenI 🇻🇦 928 68 23 Feb 2023 319th JayXon 🇺🇸 928 68 4 Mar 2025 321st Lydxn 🇨🇦 928 70 17 Oct 2022 321st JayXon 🇺🇸 928 70 17 Oct 2022 321st GrayJoKing 🇦🇺 928 70 13 Jul 2024 321st FlyingPenguin223 928 70 4 Oct 2024 321st jipsong 🇩🇪 928 70 5 Apr 2025 326th sisyphus-ppcg 🇦🇺 927 50 31 Jan 2023 326th saito-ta 🇯🇵 927 50 12 Dec 2024 328th JayXon 🇺🇸 927 57 19 Aug 2024 329th Steffan153 🇫🇮 927 67 19 Aug 2024 329th JayXon 🇺🇸 927 67 19 Aug 2024 331st roavin 926 84 23 Jun 2022 331st tkr-sh 🇫🇷 926 84 20 Aug 2022 331st Nickmiste 926 84 9 Nov 2022 331st Matgc04 926 84 19 May 2023 331st postie77 926 84 19 May 2023 331st ertz1ertz 926 84 13 Sep 2024 331st Grabnukebomb 926 84 13 Sep 2024 331st Shanethegamer 🇺🇸 926 84 9 Apr 2025 331st HumanoidCPU 926 84 10 Apr 2025 331st annaproxy 926 84 11 Apr 2025 331st Re-Adventures 🇮🇳 926 84 15 Apr 2025 331st janbehrens 🇩🇪 926 84 17 Apr 2025 331st fuzzylojik-golf 🇺🇸 926 84 28 May 2025 344th scpchicken 🇵🇼 925 72 4 May 2022 344th sultan 925 72 6 Jun 2022 344th annaproxy 925 72 22 Aug 2022 344th BlankSpruce 925 72 9 Sep 2022 344th ValentinCassayre 925 72 8 Oct 2022 344th commandblockguy 🇺🇸 925 72 3 Nov 2022 344th mathb0y512 925 72 1 Dec 2022 344th NoahBolohan 🇨🇦 925 72 28 Feb 2023 344th neel11235813 925 72 8 Mar 2023 344th Kacarott 🇦🇺 925 72 24 Mar 2023 344th Fracture17 925 72 8 Apr 2023 344th ayushdewan 925 72 7 May 2023 344th PeterTillema 🇳🇱 925 72 17 Oct 2023 344th Glinte 925 72 11 Dec 2023 344th nanatsu8 925 72 11 May 2024 344th thej10n 925 72 12 Jun 2024 344th duckyluuk 🇳🇱 925 72 13 Jun 2024 344th tobeannouncd 925 72 25 Apr 2025 362nd ovs-code 🇩🇪 924 67 13 Dec 2022 362nd Steffan153 🇫🇮 924 67 18 Dec 2022 362nd Lydxn 🇨🇦 924 67 4 Feb 2023 362nd sean-niemann 🇺🇸 924 67 7 Mar 2025 366th Bubbler-4 923 33 6 May 2022 366th rak1507 🇬🇧 923 33 8 May 2022 366th ngn 🇧🇬 923 33 11 May 2022 366th zacjl 923 33 26 days ago 366th GrayJoKing 🇦🇺 923 33 25 days ago 371st Luca2812 923 127 12 Dec 2022 371st plastic-bottle 923 127 13 Sep 2023 371st h3ra993huskp 🇯🇵 923 127 17 Sep 2023 371st tigerdan2 🇩🇪 923 127 19 Dec 2023 375th btnlq 922 59 6 Nov 2022 Prev 301–375 of 3,156 Next