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 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 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 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 Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 669th btnlq 872 66 17 Oct 2023 677th DialFrost 🇸🇬 872 73 3 Jun 2025 678th HPWiz 🇳🇿 871 49 4 May 2022 678th JayXon 🇺🇸 871 49 5 May 2022 678th Steffan153 🇫🇮 871 49 10 Dec 2022 678th ovs-code 🇩🇪 871 49 24 Oct 2023 678th sean-niemann 🇺🇸 871 49 12 Jul 2024 683rd c0d3-4-F00d 🇩🇪 871 89 5 May 2022 683rd fkantelberg 871 89 15 Jul 2023 683rd bac0id 871 89 26 Sep 2023 683rd TRexOnGit 871 89 16 Feb 2024 683rd arcpolaris 871 89 18 Nov 2024 688th inventshah 871 97 6 May 2022 688th roupiq 🇵🇱 871 97 22 Nov 2023 690th dokutan 870 62 28 Apr 2025 691st DialFrost 🇸🇬 870 86 24 Oct 2024 691st stefangimmillaro 870 86 14 Jan 2025 693rd janbehrens 🇩🇪 869 90 21 Apr 2023 693rd Yewzir 🇧🇪 869 90 22 Apr 2023 693rd DialFrost 🇸🇬 869 90 6 Nov 2023 693rd Ripick 869 90 27 Nov 2024 697th jacobly0 🇺🇸 869 153 26 Sep 2023 698th GolfingSuccess 🇬🇷 868 71 5 May 2022 698th emplv 🇱🇻 868 71 5 May 2022 698th JayXon 🇺🇸 868 71 7 May 2022 698th m-tkach 🇺🇦 868 71 15 May 2022 698th nwellnhof 🇩🇪 868 71 5 Jun 2022 698th Irratix 🇳🇱 868 71 13 Jun 2022 698th michael-pruglo 🇺🇦 868 71 13 Jul 2022 698th stefangimmillaro 868 71 2 Jun 2023 698th kkoenig 868 71 21 Dec 2023 698th JohandeRuiter 🇳🇱 868 71 14 Sep 2024 698th masinag 🇮🇹 868 71 6 Oct 2024 709th nwellnhof 🇩🇪 867 53 4 May 2022 709th GrayJoKing 🇦🇺 867 53 6 May 2022 711th AlephSquirrel 867 80 20 Apr 2023 711th ashtraypettingzoo 🇺🇸 867 80 1 Apr 2024 713th lukehewittvandy 867 135 18 Jul 2022 713th OriEy 867 135 27 Apr 2023 713th Maximizer02 867 135 8 Jun 2024 713th 0dyse 867 135 23 Apr 2025 717th Shanethegamer 🇺🇸 866 70 12 Dec 2022 717th Alessandro-Balconi 🇮🇹 866 70 26 Dec 2022 719th dieggsy 866 97 8 Oct 2024 720th Andriamanitra 🇫🇮 865 54 21 Jul 2022 720th jared-hughes 865 54 12 Sep 2022 720th OhmNomNom 865 54 7 Oct 2022 720th olleicua 🇺🇸 865 54 21 Jan 2024 720th LostSyntax21 🇬🇧 865 54 12 Mar 2025 720th AbrahamJLR 🇻🇪 865 54 4 Jun 2025 720th vishal-mohanty 865 54 11 days ago 727th dokutan 865 82 1 Jul 2024 728th DialFrost 🇸🇬 864 64 10 Jul 2024 729th MeWhenI 🇻🇦 863 85 27 Jun 2022 729th Shanethegamer 🇺🇸 863 85 15 May 2023 729th albanian-laundromat 863 85 11 days ago 732nd Grrisly 863 114 25 Mar 2024 733rd MeWhenI 🇻🇦 863 154 10 Oct 2023 734th mtirado1 862 75 13 Aug 2022 735th deadp4nda 🇩🇪 862 90 26 Apr 2024 735th 123mjb 862 90 23 Jun 2025 735th michelebastione 🇮🇹 862 90 11 days ago 738th TylerBloom 862 96 22 Mar 2024 739th shellbertt 🇨🇦 862 98 9 May 2022 739th iakolzin 862 98 26 May 2022 739th Betuaredead 862 98 5 Jan 2023 739th oceko 862 98 19 Feb 2024 739th dokutan 862 98 17 Mar 2024 739th cuzdav 862 98 4 May 2025 745th steffan-polygolf 861 73 23 Feb 2023 745th MWI-polygolf 861 73 6 Dec 2023 745th HumanoidCPU 861 73 7 May 2024 748th Steffan153 🇫🇮 861 82 23 Feb 2023 749th ovs-code 🇩🇪 861 133 8 Jul 2024 750th GrayJoKing 🇦🇺 860 67 8 Feb 2025 Prev 676–750 of 3,296 Next