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 601st rucin93 🇵🇱 874 57 4 Aug 2024 601st dokutan 874 57 9 Aug 2024 603rd Grrisly 874 74 25 Mar 2024 604th snoozingnewt 🇺🇸 874 95 10 days ago 605th c0d3-4-F00d 🇩🇪 873 61 6 May 2022 605th jackkav 873 61 26 Jun 2022 605th TechNolaByte 873 61 6 Jul 2022 605th Heathcorp 🇦🇺 873 61 17 Jul 2022 605th C0de5mith 🇺🇸 873 61 3 Aug 2022 605th sebipopa 🇷🇴 873 61 18 Aug 2022 605th moikaturns 🇬🇧 873 61 25 Sep 2022 605th FlorianCassayre 🇫🇷 873 61 27 Sep 2022 605th Mazn3k 873 61 1 Feb 2023 605th tvcv901 873 61 22 Mar 2023 605th unfinishedprogram 873 61 19 Jul 2023 605th snoozingnewt 🇺🇸 873 61 23 Sep 2023 605th funnyboy-roks 873 61 9 May 2024 605th bac0id 873 61 29 Jun 2024 605th madex 🇩🇪 873 61 9 Jul 2024 605th FortuiteMan 🇫🇷 873 61 10 Oct 2024 605th RobertHoeh 873 61 5 Apr 2025 605th LvLError 873 61 29 May 2025 605th Lv0Sys 🇵🇱 873 61 30 May 2025 605th miles-evan 873 61 5 Aug 2025 605th alexsave 873 61 5 days ago 626th NerdyMcNerd42 873 64 26 Oct 2022 626th tpasfieldERAU 873 64 14 Nov 2022 626th CheeseCake628 🇳🇴 873 64 6 Jan 2023 626th adamnielson42 🇺🇸 873 64 25 Apr 2023 626th nathsou 🇫🇷 873 64 2 Sep 2023 626th zwxzwxzwx21 873 64 30 Jan 2024 626th steffan-polygolf 873 64 8 Mar 2024 626th Jacob385 873 64 4 Apr 2024 626th gallium-gonzollium 873 64 26 Aug 2024 626th Babafaba 873 64 3 days ago 636th johnnythedoggie 873 72 13 May 2022 636th kaascevich 873 72 8 Jul 2025 638th DialFrost 🇸🇬 873 73 3 Jun 2025 639th Shanethegamer 🇺🇸 872 66 4 May 2022 639th scpchicken 🇵🇼 872 66 5 May 2022 639th sisyphus-ppcg 🇦🇺 872 66 6 May 2022 639th Natanaelel 🇸🇪 872 66 15 Jun 2022 639th Z-snails 872 66 27 Feb 2023 639th Jeremy-Stafford 872 66 27 Feb 2023 639th alomiF 872 66 1 Sep 2023 639th btnlq 872 66 17 Oct 2023 647th DialFrost 🇸🇬 872 86 24 Oct 2024 647th stefangimmillaro 872 86 14 Jan 2025 649th c0d3-4-F00d 🇩🇪 872 89 5 May 2022 649th fkantelberg 872 89 15 Jul 2023 649th bac0id 872 89 26 Sep 2023 649th TRexOnGit 872 89 16 Feb 2024 649th arcpolaris 872 89 18 Nov 2024 654th nwellnhof 🇩🇪 872 111 4 May 2022 654th stefangimmillaro 872 111 26 Sep 2023 654th kkoenig 872 111 4 Jan 2024 657th HPWiz 🇳🇿 871 49 4 May 2022 657th JayXon 🇺🇸 871 49 5 May 2022 657th Steffan153 🇫🇮 871 49 10 Dec 2022 657th ovs-code 🇩🇪 871 49 24 Oct 2023 657th sean-niemann 🇺🇸 871 49 12 Jul 2024 662nd dokutan 871 62 28 Apr 2025 663rd inventshah 871 97 6 May 2022 663rd roupiq 🇵🇱 871 97 22 Nov 2023 665th janbehrens 🇩🇪 870 90 21 Apr 2023 665th Yewzir 🇧🇪 870 90 22 Apr 2023 665th DialFrost 🇸🇬 870 90 6 Nov 2023 665th Ripick 870 90 27 Nov 2024 669th GolfingSuccess 🇬🇷 869 71 5 May 2022 669th emplv 🇱🇻 869 71 5 May 2022 669th JayXon 🇺🇸 869 71 7 May 2022 669th m-tkach 🇺🇦 869 71 15 May 2022 669th nwellnhof 🇩🇪 869 71 5 Jun 2022 669th Irratix 🇳🇱 869 71 13 Jun 2022 669th michael-pruglo 🇺🇦 869 71 13 Jul 2022 First Prev 601–675 of 3,375 Next Last