Collatz in C in chars. 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 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 Star Wars GPT 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 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 Star Wars GPT Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 1st Lydxn 🇨🇦 1,000 64 21 Dec 2023 1st rhdqor213 1,000 64 10 Aug 2024 3rd nai62 941 68 27 Aug 2022 4th GrayJoKing 🇦🇺 914 70 6 May 2022 4th ovs-code 🇩🇪 914 70 8 Oct 2023 4th catfish000 914 70 8 Oct 2023 4th saito-ta 🇯🇵 914 70 21 Dec 2023 4th sean-niemann 🇺🇸 914 70 10 Jul 2024 9th GolfingSuccess 🇬🇷 901 71 5 May 2022 9th emplv 🇱🇻 901 71 5 May 2022 9th JayXon 🇺🇸 901 71 7 May 2022 9th m-tkach 🇺🇦 901 71 15 May 2022 9th nwellnhof 🇩🇪 901 71 5 Jun 2022 9th Irratix 🇳🇱 901 71 13 Jun 2022 9th michael-pruglo 🇺🇦 901 71 13 Jul 2022 9th stefangimmillaro 901 71 2 Jun 2023 9th kkoenig 901 71 21 Dec 2023 9th JohandeRuiter 🇳🇱 901 71 14 Sep 2024 9th masinag 🇮🇹 901 71 6 Oct 2024 9th KasperKivimaeki 🇫🇮 901 71 27 days ago 21st jared-hughes 889 72 6 Jul 2022 21st Steffan153 🇫🇮 889 72 3 Jan 2023 21st MeWhenI 🇻🇦 889 72 7 May 2023 21st ListeriaM 889 72 22 Aug 2023 21st larcherMTT 889 72 5 Oct 2024 21st snyderek 🇺🇸 889 72 19 Feb 2025 27th NewDefectus 🇮🇱 877 73 6 May 2022 27th inventshah 877 73 12 Jun 2022 27th Natanaelel 🇸🇪 877 73 15 Jun 2022 27th 5quiwyrm 877 73 19 Oct 2022 27th Herbert00709 🇵🇱 877 73 22 Dec 2023 27th LorenzoDeGaspari 877 73 27 May 2024 33rd Alex-x90 🇺🇸 865 74 4 Dec 2022 33rd undersquire 865 74 24 Jun 2023 33rd rdmsr 865 74 24 Jun 2023 33rd Bmrl7 865 74 9 Jul 2023 33rd Vinterion 865 74 6 Nov 2023 33rd namelessiw 865 74 28 Dec 2023 33rd Jonatan6 🇩🇰 865 74 15 Mar 2024 33rd Mandrzejy 🇵🇱 865 74 12 Apr 2024 33rd kaurakeksi 🇫🇮 865 74 29 Dec 2024 42nd AlephSquirrel 853 75 12 Jan 2023 42nd Yewzir 🇧🇪 853 75 22 Apr 2023 42nd Shanethegamer 🇺🇸 853 75 15 May 2023 42nd imma-Spring 853 75 15 Nov 2023 42nd noahgitsham 853 75 20 Jun 2024 42nd not-a-pokemon 853 75 10 days ago 48th ZakkkkAttackkkk 🇵🇭 842 76 23 Jul 2022 48th janbehrens 🇩🇪 842 76 21 Apr 2023 48th abc7-12 842 76 6 May 2024 48th heanyang1 842 76 20 May 2024 52nd madex 🇩🇪 831 77 12 Nov 2022 52nd aksyristos 831 77 12 Dec 2022 52nd elgan65536 831 77 4 Nov 2023 52nd dokutan 831 77 17 Mar 2024 52nd Flying-Toast 831 77 17 Apr 2024 57th shellbertt 🇨🇦 821 78 4 May 2022 57th Heathcorp 🇦🇺 821 78 7 May 2022 57th Attero 🇸🇪 821 78 3 Aug 2022 57th ibexq 821 78 29 Sep 2022 57th Re-Adventures 🇮🇳 821 78 7 Nov 2022 57th Betuaredead 821 78 5 Jan 2023 57th User2654 821 78 8 Feb 2023 57th KenanHanke 821 78 20 Feb 2023 57th mnbvczx 🇰🇷 821 78 12 Mar 2023 57th annaproxy 821 78 4 Jun 2023 57th snoozingnewt 🇺🇸 821 78 23 Sep 2023 57th weliveinhell 🇭🇹 821 78 2 Oct 2023 57th DialFrost 🇸🇬 821 78 1 Nov 2023 57th ehulinsky 🇺🇸 821 78 16 Feb 2024 57th Luca2812 821 78 4 Mar 2024 57th 0xV0RT3X 821 78 4 Mar 2024 57th emgordon154 821 78 25 Jul 2024 57th BlankSpruce 821 78 20 Aug 2024 57th madeforlosers 821 78 5 Sep 2024 1–75 of 213 Next