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 Trinomial Triangle 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 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 Trinomial Triangle 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 Turtle Tutorial # Golfer Points Chars Time 600th dokutan 874 57 9 Aug 2024 602nd Grrisly 874 74 25 Mar 2024 603rd snoozingnewt 🇺🇸 874 95 6 days ago 604th c0d3-4-F00d 🇩🇪 873 61 6 May 2022 604th jackkav 873 61 26 Jun 2022 604th TechNolaByte 873 61 6 Jul 2022 604th Heathcorp 🇦🇺 873 61 17 Jul 2022 604th C0de5mith 🇺🇸 873 61 3 Aug 2022 604th sebipopa 🇷🇴 873 61 18 Aug 2022 604th moikaturns 🇬🇧 873 61 25 Sep 2022 604th FlorianCassayre 🇫🇷 873 61 27 Sep 2022 604th Mazn3k 873 61 1 Feb 2023 604th tvcv901 873 61 22 Mar 2023 604th unfinishedprogram 873 61 19 Jul 2023 604th snoozingnewt 🇺🇸 873 61 23 Sep 2023 604th funnyboy-roks 873 61 9 May 2024 604th bac0id 873 61 29 Jun 2024 604th madex 🇩🇪 873 61 9 Jul 2024 604th FortuiteMan 🇫🇷 873 61 10 Oct 2024 604th RobertHoeh 873 61 5 Apr 2025 604th LvLError 873 61 29 May 2025 604th Lv0Sys 🇵🇱 873 61 30 May 2025 604th miles-evan 873 61 5 Aug 2025 604th alexsave 873 61 41 hours ago 625th NerdyMcNerd42 873 64 26 Oct 2022 625th tpasfieldERAU 873 64 14 Nov 2022 625th CheeseCake628 🇳🇴 873 64 6 Jan 2023 625th adamnielson42 🇺🇸 873 64 25 Apr 2023 625th nathsou 🇫🇷 873 64 2 Sep 2023 625th zwxzwxzwx21 873 64 30 Jan 2024 625th steffan-polygolf 873 64 8 Mar 2024 625th Jacob385 873 64 4 Apr 2024 625th gallium-gonzollium 873 64 26 Aug 2024 634th johnnythedoggie 873 72 13 May 2022 634th kaascevich 873 72 8 Jul 2025 636th DialFrost 🇸🇬 873 73 3 Jun 2025 637th Shanethegamer 🇺🇸 872 66 4 May 2022 637th scpchicken 🇵🇼 872 66 5 May 2022 637th sisyphus-ppcg 🇦🇺 872 66 6 May 2022 637th Natanaelel 🇸🇪 872 66 15 Jun 2022 637th Z-snails 872 66 27 Feb 2023 637th Jeremy-Stafford 872 66 27 Feb 2023 637th alomiF 872 66 1 Sep 2023 637th btnlq 872 66 17 Oct 2023 645th DialFrost 🇸🇬 872 86 24 Oct 2024 645th stefangimmillaro 872 86 14 Jan 2025 647th c0d3-4-F00d 🇩🇪 872 89 5 May 2022 647th fkantelberg 872 89 15 Jul 2023 647th bac0id 872 89 26 Sep 2023 647th TRexOnGit 872 89 16 Feb 2024 647th arcpolaris 872 89 18 Nov 2024 652nd nwellnhof 🇩🇪 872 111 4 May 2022 652nd stefangimmillaro 872 111 26 Sep 2023 652nd kkoenig 872 111 4 Jan 2024 655th HPWiz 🇳🇿 871 49 4 May 2022 655th JayXon 🇺🇸 871 49 5 May 2022 655th Steffan153 🇫🇮 871 49 10 Dec 2022 655th ovs-code 🇩🇪 871 49 24 Oct 2023 655th sean-niemann 🇺🇸 871 49 12 Jul 2024 660th dokutan 871 62 28 Apr 2025 661st inventshah 871 97 6 May 2022 661st roupiq 🇵🇱 871 97 22 Nov 2023 663rd janbehrens 🇩🇪 870 90 21 Apr 2023 663rd Yewzir 🇧🇪 870 90 22 Apr 2023 663rd DialFrost 🇸🇬 870 90 6 Nov 2023 663rd Ripick 870 90 27 Nov 2024 667th GolfingSuccess 🇬🇷 869 71 5 May 2022 667th emplv 🇱🇻 869 71 5 May 2022 667th JayXon 🇺🇸 869 71 7 May 2022 667th m-tkach 🇺🇦 869 71 15 May 2022 667th nwellnhof 🇩🇪 869 71 5 Jun 2022 667th Irratix 🇳🇱 869 71 13 Jun 2022 667th michael-pruglo 🇺🇦 869 71 13 Jul 2022 667th stefangimmillaro 869 71 2 Jun 2023 667th kkoenig 869 71 21 Dec 2023 First Prev 601–675 of 3,371 Next Last