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 676th HPWiz 🇳🇿 871 49 4 May 2022 676th JayXon 🇺🇸 871 49 5 May 2022 676th Steffan153 🇫🇮 871 49 10 Dec 2022 676th ovs-code 🇩🇪 871 49 24 Oct 2023 676th sean-niemann 🇺🇸 871 49 12 Jul 2024 681st c0d3-4-F00d 🇩🇪 871 89 5 May 2022 681st fkantelberg 871 89 15 Jul 2023 681st bac0id 871 89 26 Sep 2023 681st TRexOnGit 871 89 16 Feb 2024 681st arcpolaris 871 89 18 Nov 2024 686th inventshah 871 97 6 May 2022 686th roupiq 🇵🇱 871 97 22 Nov 2023 688th dokutan 870 62 28 Apr 2025 689th DialFrost 🇸🇬 870 86 24 Oct 2024 689th stefangimmillaro 870 86 14 Jan 2025 691st janbehrens 🇩🇪 869 90 21 Apr 2023 691st Yewzir 🇧🇪 869 90 22 Apr 2023 691st DialFrost 🇸🇬 869 90 6 Nov 2023 691st Ripick 869 90 27 Nov 2024 695th jacobly0 🇺🇸 869 153 26 Sep 2023 696th GolfingSuccess 🇬🇷 868 71 5 May 2022 696th emplv 🇱🇻 868 71 5 May 2022 696th JayXon 🇺🇸 868 71 7 May 2022 696th m-tkach 🇺🇦 868 71 15 May 2022 696th nwellnhof 🇩🇪 868 71 5 Jun 2022 696th Irratix 🇳🇱 868 71 13 Jun 2022 696th michael-pruglo 🇺🇦 868 71 13 Jul 2022 696th stefangimmillaro 868 71 2 Jun 2023 696th kkoenig 868 71 21 Dec 2023 696th JohandeRuiter 🇳🇱 868 71 14 Sep 2024 696th masinag 🇮🇹 868 71 6 Oct 2024 707th AlephSquirrel 867 80 20 Apr 2023 707th ashtraypettingzoo 🇺🇸 867 80 1 Apr 2024 709th lukehewittvandy 867 135 18 Jul 2022 709th OriEy 867 135 27 Apr 2023 709th Maximizer02 867 135 8 Jun 2024 709th 0dyse 867 135 23 Apr 2025 713th nwellnhof 🇩🇪 866 53 4 May 2022 713th GrayJoKing 🇦🇺 866 53 6 May 2022 715th dieggsy 866 97 8 Oct 2024 716th Andriamanitra 🇫🇮 865 54 21 Jul 2022 716th jared-hughes 865 54 12 Sep 2022 716th OhmNomNom 865 54 7 Oct 2022 716th olleicua 🇺🇸 865 54 21 Jan 2024 716th LostSyntax21 🇬🇧 865 54 12 Mar 2025 716th AbrahamJLR 🇻🇪 865 54 4 Jun 2025 716th vishal-mohanty 865 54 9 days ago 723rd Shanethegamer 🇺🇸 865 70 12 Dec 2022 723rd Alessandro-Balconi 🇮🇹 865 70 26 Dec 2022 725th dokutan 865 82 1 Jul 2024 726th DialFrost 🇸🇬 863 64 10 Jul 2024 727th MeWhenI 🇻🇦 863 85 27 Jun 2022 727th Shanethegamer 🇺🇸 863 85 15 May 2023 727th albanian-laundromat 863 85 8 days ago 730th MeWhenI 🇻🇦 863 154 10 Oct 2023 731st mtirado1 862 75 13 Aug 2022 732nd TylerBloom 862 96 22 Mar 2024 733rd shellbertt 🇨🇦 862 98 9 May 2022 733rd iakolzin 862 98 26 May 2022 733rd Betuaredead 862 98 5 Jan 2023 733rd oceko 862 98 19 Feb 2024 733rd dokutan 862 98 17 Mar 2024 733rd cuzdav 862 98 4 May 2025 739th Grrisly 862 114 25 Mar 2024 740th Steffan153 🇫🇮 861 82 23 Feb 2023 741st deadp4nda 🇩🇪 861 90 26 Apr 2024 741st 123mjb 861 90 23 Jun 2025 741st michelebastione 🇮🇹 861 90 9 days ago 744th ovs-code 🇩🇪 861 133 8 Jul 2024 745th GrayJoKing 🇦🇺 860 67 8 Feb 2025 746th steffan-polygolf 860 73 23 Feb 2023 746th MWI-polygolf 860 73 6 Dec 2023 746th HumanoidCPU 860 73 7 May 2024 749th crizin 🇰🇷 860 136 9 Sep 2023 749th TheZwierzLF 🇵🇱 860 136 2 Jun 2025 Prev 676–750 of 3,273 Next