Collatz in all languages 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 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 Chars Time 593rd Mazn3k 873 61 1 Feb 2023 593rd tvcv901 873 61 22 Mar 2023 593rd unfinishedprogram 873 61 19 Jul 2023 593rd snoozingnewt 🇺🇸 873 61 23 Sep 2023 593rd funnyboy-roks 873 61 9 May 2024 593rd bac0id 873 61 29 Jun 2024 593rd madex 🇩🇪 873 61 9 Jul 2024 593rd FortuiteMan 🇫🇷 873 61 10 Oct 2024 593rd RobertHoeh 873 61 5 Apr 2025 593rd LvLError 873 61 29 May 2025 593rd Lv0Sys 🇵🇱 873 61 30 May 2025 593rd miles-evan 873 61 5 Aug 2025 613th NerdyMcNerd42 873 64 26 Oct 2022 613th tpasfieldERAU 873 64 14 Nov 2022 613th CheeseCake628 🇳🇴 873 64 6 Jan 2023 613th adamnielson42 🇺🇸 873 64 25 Apr 2023 613th nathsou 🇫🇷 873 64 2 Sep 2023 613th zwxzwxzwx21 873 64 30 Jan 2024 613th steffan-polygolf 873 64 8 Mar 2024 613th Jacob385 873 64 4 Apr 2024 613th gallium-gonzollium 873 64 26 Aug 2024 622nd johnnythedoggie 873 72 13 May 2022 622nd kaascevich 873 72 8 Jul 2025 624th Shanethegamer 🇺🇸 872 66 4 May 2022 624th scpchicken 🇵🇼 872 66 5 May 2022 624th sisyphus-ppcg 🇦🇺 872 66 6 May 2022 624th Natanaelel 🇸🇪 872 66 15 Jun 2022 624th Z-snails 872 66 27 Feb 2023 624th Jeremy-Stafford 872 66 27 Feb 2023 624th alomiF 872 66 1 Sep 2023 624th btnlq 872 66 17 Oct 2023 632nd DialFrost 🇸🇬 872 73 3 Jun 2025 633rd DialFrost 🇸🇬 872 86 24 Oct 2024 633rd stefangimmillaro 872 86 14 Jan 2025 635th HPWiz 🇳🇿 871 49 4 May 2022 635th JayXon 🇺🇸 871 49 5 May 2022 635th Steffan153 🇫🇮 871 49 10 Dec 2022 635th ovs-code 🇩🇪 871 49 24 Oct 2023 635th sean-niemann 🇺🇸 871 49 12 Jul 2024 640th dokutan 871 62 28 Apr 2025 641st c0d3-4-F00d 🇩🇪 871 89 5 May 2022 641st fkantelberg 871 89 15 Jul 2023 641st bac0id 871 89 26 Sep 2023 641st TRexOnGit 871 89 16 Feb 2024 641st arcpolaris 871 89 18 Nov 2024 646th inventshah 871 97 6 May 2022 646th roupiq 🇵🇱 871 97 22 Nov 2023 648th GolfingSuccess 🇬🇷 869 71 5 May 2022 648th emplv 🇱🇻 869 71 5 May 2022 648th JayXon 🇺🇸 869 71 7 May 2022 648th m-tkach 🇺🇦 869 71 15 May 2022 648th nwellnhof 🇩🇪 869 71 5 Jun 2022 648th Irratix 🇳🇱 869 71 13 Jun 2022 648th michael-pruglo 🇺🇦 869 71 13 Jul 2022 648th stefangimmillaro 869 71 2 Jun 2023 648th kkoenig 869 71 21 Dec 2023 648th JohandeRuiter 🇳🇱 869 71 14 Sep 2024 648th masinag 🇮🇹 869 71 6 Oct 2024 659th AlephSquirrel 869 80 20 Apr 2023 659th ashtraypettingzoo 🇺🇸 869 80 1 Apr 2024 661st janbehrens 🇩🇪 869 90 21 Apr 2023 661st Yewzir 🇧🇪 869 90 22 Apr 2023 661st DialFrost 🇸🇬 869 90 6 Nov 2023 661st Ripick 869 90 27 Nov 2024 665th nwellnhof 🇩🇪 867 53 4 May 2022 665th GrayJoKing 🇦🇺 867 53 6 May 2022 667th Shanethegamer 🇺🇸 866 70 12 Dec 2022 667th Alessandro-Balconi 🇮🇹 866 70 26 Dec 2022 669th dokutan 866 82 1 Jul 2024 670th dieggsy 866 97 8 Oct 2024 671st Andriamanitra 🇫🇮 865 54 21 Jul 2022 671st jared-hughes 865 54 12 Sep 2022 671st OhmNomNom 865 54 7 Oct 2022 671st olleicua 🇺🇸 865 54 21 Jan 2024 671st LostSyntax21 🇬🇧 865 54 12 Mar 2025 Prev 601–675 of 3,320 Next