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 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 Hilbert Curve 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 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 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 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 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 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 Hilbert Curve 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 672nd arcpolaris 871 89 18 Nov 2024 677th dokutan 870 62 28 Apr 2025 678th DialFrost 🇸🇬 870 86 24 Oct 2024 678th stefangimmillaro 870 86 14 Jan 2025 680th inventshah 870 97 6 May 2022 680th roupiq 🇵🇱 870 97 22 Nov 2023 682nd janbehrens 🇩🇪 869 90 21 Apr 2023 682nd Yewzir 🇧🇪 869 90 22 Apr 2023 682nd DialFrost 🇸🇬 869 90 6 Nov 2023 682nd Ripick 869 90 27 Nov 2024 686th jacobly0 🇺🇸 869 153 26 Sep 2023 687th GolfingSuccess 🇬🇷 868 71 5 May 2022 687th emplv 🇱🇻 868 71 5 May 2022 687th JayXon 🇺🇸 868 71 7 May 2022 687th m-tkach 🇺🇦 868 71 15 May 2022 687th nwellnhof 🇩🇪 868 71 5 Jun 2022 687th Irratix 🇳🇱 868 71 13 Jun 2022 687th michael-pruglo 🇺🇦 868 71 13 Jul 2022 687th stefangimmillaro 868 71 2 Jun 2023 687th kkoenig 868 71 21 Dec 2023 687th JohandeRuiter 🇳🇱 868 71 14 Sep 2024 687th masinag 🇮🇹 868 71 6 Oct 2024 698th AlephSquirrel 867 80 20 Apr 2023 698th ashtraypettingzoo 🇺🇸 867 80 1 Apr 2024 700th nwellnhof 🇩🇪 866 53 4 May 2022 700th GrayJoKing 🇦🇺 866 53 6 May 2022 702nd dieggsy 866 97 8 Oct 2024 703rd lukehewittvandy 866 135 18 Jul 2022 703rd OriEy 866 135 27 Apr 2023 703rd Maximizer02 866 135 8 Jun 2024 703rd 0dyse 866 135 23 Apr 2025 707th Andriamanitra 🇫🇮 865 54 21 Jul 2022 707th jared-hughes 865 54 12 Sep 2022 707th OhmNomNom 865 54 7 Oct 2022 707th olleicua 🇺🇸 865 54 21 Jan 2024 707th LostSyntax21 🇬🇧 865 54 12 Mar 2025 707th AbrahamJLR 🇻🇪 865 54 4 Jun 2025 707th vishal-mohanty 865 54 43 hours ago 714th Shanethegamer 🇺🇸 865 70 12 Dec 2022 714th Alessandro-Balconi 🇮🇹 865 70 26 Dec 2022 716th dokutan 865 82 1 Jul 2024 717th DialFrost 🇸🇬 863 64 10 Jul 2024 718th MeWhenI 🇻🇦 863 85 27 Jun 2022 718th Shanethegamer 🇺🇸 863 85 15 May 2023 718th albanian-laundromat 863 85 28 hours ago 721st MeWhenI 🇻🇦 863 154 10 Oct 2023 722nd mtirado1 862 75 13 Aug 2022 723rd TylerBloom 862 96 22 Mar 2024 724th shellbertt 🇨🇦 862 98 9 May 2022 724th iakolzin 862 98 26 May 2022 724th Betuaredead 862 98 5 Jan 2023 724th oceko 862 98 19 Feb 2024 724th dokutan 862 98 17 Mar 2024 724th cuzdav 862 98 4 May 2025 730th Grrisly 862 114 25 Mar 2024 731st Steffan153 🇫🇮 861 82 23 Feb 2023 732nd tomh1012 861 90 5 May 2022 732nd deadp4nda 🇩🇪 861 90 26 Apr 2024 732nd 123mjb 861 90 23 Jun 2025 732nd michelebastione 🇮🇹 861 90 47 hours ago 736th ovs-code 🇩🇪 861 133 8 Jul 2024 737th GrayJoKing 🇦🇺 860 67 8 Feb 2025 738th steffan-polygolf 860 73 23 Feb 2023 738th MWI-polygolf 860 73 6 Dec 2023 738th HumanoidCPU 860 73 7 May 2024 741st crizin 🇰🇷 860 136 9 Sep 2023 741st TheZwierzLF 🇵🇱 860 136 2 Jun 2025 743rd GrayJoKing 🇦🇺 859 56 15 Jan 2024 743rd AlephSquirrel 859 56 21 Jan 2024 745th Setvizan 859 62 12 Jan 2023 745th GreenBeansAgainstVeganism 859 62 13 Jan 2023 745th arctouch-cristiannevianna 859 62 3 Apr 2023 745th Corxldyphik 859 62 11 Apr 2023 745th Blockyheadman 859 62 1 Nov 2023 745th ollyspooner 859 62 22 Nov 2023 Prev 676–750 of 3,261 Next