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 675th JayXon 🇺🇸 871 49 5 May 2022 675th Steffan153 🇫🇮 871 49 10 Dec 2022 675th ovs-code 🇩🇪 871 49 24 Oct 2023 675th sean-niemann 🇺🇸 871 49 12 Jul 2024 680th c0d3-4-F00d 🇩🇪 871 89 5 May 2022 680th fkantelberg 871 89 15 Jul 2023 680th bac0id 871 89 26 Sep 2023 680th TRexOnGit 871 89 16 Feb 2024 680th arcpolaris 871 89 18 Nov 2024 685th inventshah 871 97 6 May 2022 685th roupiq 🇵🇱 871 97 22 Nov 2023 687th dokutan 870 62 28 Apr 2025 688th GolfingSuccess 🇬🇷 869 71 5 May 2022 688th emplv 🇱🇻 869 71 5 May 2022 688th JayXon 🇺🇸 869 71 7 May 2022 688th m-tkach 🇺🇦 869 71 15 May 2022 688th nwellnhof 🇩🇪 869 71 5 Jun 2022 688th Irratix 🇳🇱 869 71 13 Jun 2022 688th michael-pruglo 🇺🇦 869 71 13 Jul 2022 688th stefangimmillaro 869 71 2 Jun 2023 688th kkoenig 869 71 21 Dec 2023 688th JohandeRuiter 🇳🇱 869 71 14 Sep 2024 688th masinag 🇮🇹 869 71 6 Oct 2024 699th janbehrens 🇩🇪 869 90 21 Apr 2023 699th Yewzir 🇧🇪 869 90 22 Apr 2023 699th DialFrost 🇸🇬 869 90 6 Nov 2023 699th Ripick 869 90 27 Nov 2024 703rd AlephSquirrel 868 80 20 Apr 2023 703rd ashtraypettingzoo 🇺🇸 868 80 1 Apr 2024 705th nwellnhof 🇩🇪 867 53 4 May 2022 705th GrayJoKing 🇦🇺 867 53 6 May 2022 707th lukehewittvandy 867 135 18 Jul 2022 707th OriEy 867 135 27 Apr 2023 707th Maximizer02 867 135 8 Jun 2024 707th 0dyse 867 135 23 Apr 2025 711th Shanethegamer 🇺🇸 866 70 12 Dec 2022 711th Alessandro-Balconi 🇮🇹 866 70 26 Dec 2022 713th dieggsy 866 97 8 Oct 2024 714th Andriamanitra 🇫🇮 865 54 21 Jul 2022 714th jared-hughes 865 54 12 Sep 2022 714th OhmNomNom 865 54 7 Oct 2022 714th olleicua 🇺🇸 865 54 21 Jan 2024 714th LostSyntax21 🇬🇧 865 54 12 Mar 2025 714th AbrahamJLR 🇻🇪 865 54 4 Jun 2025 714th vishal-mohanty 865 54 27 days ago 721st dokutan 865 82 1 Jul 2024 722nd DialFrost 🇸🇬 864 64 10 Jul 2024 723rd MeWhenI 🇻🇦 864 85 27 Jun 2022 723rd Shanethegamer 🇺🇸 864 85 15 May 2023 723rd albanian-laundromat 864 85 26 days ago 726th Grrisly 864 114 25 Mar 2024 727th mtirado1 863 75 13 Aug 2022 728th deadp4nda 🇩🇪 862 90 26 Apr 2024 728th 123mjb 862 90 23 Jun 2025 728th michelebastione 🇮🇹 862 90 27 days ago 731st TylerBloom 862 96 22 Mar 2024 732nd shellbertt 🇨🇦 862 98 9 May 2022 732nd iakolzin 862 98 26 May 2022 732nd Betuaredead 862 98 5 Jan 2023 732nd oceko 862 98 19 Feb 2024 732nd dokutan 862 98 17 Mar 2024 732nd cuzdav 862 98 4 May 2025 732nd timhaj 🇸🇮 862 98 9 days ago 739th GolfingSuccess 🇬🇷 861 57 23 days ago 739th CaedenHarper 🇨🇦 861 57 18 days ago 741st steffan-polygolf 861 73 23 Feb 2023 741st MWI-polygolf 861 73 6 Dec 2023 741st HumanoidCPU 861 73 7 May 2024 744th Steffan153 🇫🇮 861 82 23 Feb 2023 745th ovs-code 🇩🇪 861 133 8 Jul 2024 746th crizin 🇰🇷 861 136 9 Sep 2023 746th TheZwierzLF 🇵🇱 861 136 2 Jun 2025 748th GrayJoKing 🇦🇺 860 67 8 Feb 2025 749th JayXon 🇺🇸 860 157 7 days ago 750th GrayJoKing 🇦🇺 859 56 15 Jan 2024 Prev 676–750 of 3,307 Next