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 676th dokutan 870 62 28 Apr 2025 677th DialFrost 🇸🇬 870 86 24 Oct 2024 677th stefangimmillaro 870 86 14 Jan 2025 679th inventshah 870 97 6 May 2022 679th roupiq 🇵🇱 870 97 22 Nov 2023 681st janbehrens 🇩🇪 869 90 21 Apr 2023 681st Yewzir 🇧🇪 869 90 22 Apr 2023 681st DialFrost 🇸🇬 869 90 6 Nov 2023 681st Ripick 869 90 27 Nov 2024 685th jacobly0 🇺🇸 869 153 26 Sep 2023 686th GolfingSuccess 🇬🇷 868 71 5 May 2022 686th emplv 🇱🇻 868 71 5 May 2022 686th JayXon 🇺🇸 868 71 7 May 2022 686th m-tkach 🇺🇦 868 71 15 May 2022 686th nwellnhof 🇩🇪 868 71 5 Jun 2022 686th Irratix 🇳🇱 868 71 13 Jun 2022 686th michael-pruglo 🇺🇦 868 71 13 Jul 2022 686th stefangimmillaro 868 71 2 Jun 2023 686th kkoenig 868 71 21 Dec 2023 686th JohandeRuiter 🇳🇱 868 71 14 Sep 2024 686th masinag 🇮🇹 868 71 6 Oct 2024 697th AlephSquirrel 867 80 20 Apr 2023 697th ashtraypettingzoo 🇺🇸 867 80 1 Apr 2024 699th nwellnhof 🇩🇪 866 53 4 May 2022 699th GrayJoKing 🇦🇺 866 53 6 May 2022 701st dieggsy 866 97 8 Oct 2024 702nd lukehewittvandy 866 135 18 Jul 2022 702nd OriEy 866 135 27 Apr 2023 702nd Maximizer02 866 135 8 Jun 2024 702nd 0dyse 866 135 23 Apr 2025 706th Shanethegamer 🇺🇸 865 70 12 Dec 2022 706th Alessandro-Balconi 🇮🇹 865 70 26 Dec 2022 708th dokutan 865 82 1 Jul 2024 709th Andriamanitra 🇫🇮 864 54 21 Jul 2022 709th jared-hughes 864 54 12 Sep 2022 709th OhmNomNom 864 54 7 Oct 2022 709th olleicua 🇺🇸 864 54 21 Jan 2024 709th LostSyntax21 🇬🇧 864 54 12 Mar 2025 709th AbrahamJLR 🇻🇪 864 54 4 Jun 2025 715th DialFrost 🇸🇬 863 64 10 Jul 2024 716th MeWhenI 🇻🇦 863 85 27 Jun 2022 716th Shanethegamer 🇺🇸 863 85 15 May 2023 718th MeWhenI 🇻🇦 863 154 10 Oct 2023 719th mtirado1 862 75 13 Aug 2022 720th TylerBloom 862 96 22 Mar 2024 721st shellbertt 🇨🇦 862 98 9 May 2022 721st iakolzin 862 98 26 May 2022 721st Betuaredead 862 98 5 Jan 2023 721st oceko 862 98 19 Feb 2024 721st dokutan 862 98 17 Mar 2024 721st cuzdav 862 98 4 May 2025 727th Grrisly 862 114 25 Mar 2024 728th Steffan153 🇫🇮 861 82 23 Feb 2023 729th tomh1012 861 90 5 May 2022 729th deadp4nda 🇩🇪 861 90 26 Apr 2024 729th 123mjb 861 90 23 Jun 2025 732nd ovs-code 🇩🇪 861 133 8 Jul 2024 733rd GrayJoKing 🇦🇺 860 67 8 Feb 2025 734th steffan-polygolf 860 73 23 Feb 2023 734th MWI-polygolf 860 73 6 Dec 2023 734th HumanoidCPU 860 73 7 May 2024 737th crizin 🇰🇷 860 136 9 Sep 2023 737th TheZwierzLF 🇵🇱 860 136 2 Jun 2025 739th GrayJoKing 🇦🇺 859 56 15 Jan 2024 739th AlephSquirrel 859 56 21 Jan 2024 741st Setvizan 859 62 12 Jan 2023 741st GreenBeansAgainstVeganism 859 62 13 Jan 2023 741st arctouch-cristiannevianna 859 62 3 Apr 2023 741st Corxldyphik 859 62 11 Apr 2023 741st Blockyheadman 859 62 1 Nov 2023 741st ollyspooner 859 62 22 Nov 2023 741st itserasmus 859 62 25 Jan 2024 741st Jacob385 859 62 13 Mar 2024 741st junkondo-jp 859 62 30 Jun 2024 741st ShiraJoseph 🇺🇸 859 62 1 Mar 2025 Prev 676–750 of 3,259 Next