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 7 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 2 days 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 625th Babafaba 873 64 62 mins ago 635th johnnythedoggie 873 72 13 May 2022 635th kaascevich 873 72 8 Jul 2025 637th DialFrost 🇸🇬 873 73 3 Jun 2025 638th Shanethegamer 🇺🇸 872 66 4 May 2022 638th scpchicken 🇵🇼 872 66 5 May 2022 638th sisyphus-ppcg 🇦🇺 872 66 6 May 2022 638th Natanaelel 🇸🇪 872 66 15 Jun 2022 638th Z-snails 872 66 27 Feb 2023 638th Jeremy-Stafford 872 66 27 Feb 2023 638th alomiF 872 66 1 Sep 2023 638th btnlq 872 66 17 Oct 2023 646th DialFrost 🇸🇬 872 86 24 Oct 2024 646th stefangimmillaro 872 86 14 Jan 2025 648th c0d3-4-F00d 🇩🇪 872 89 5 May 2022 648th fkantelberg 872 89 15 Jul 2023 648th bac0id 872 89 26 Sep 2023 648th TRexOnGit 872 89 16 Feb 2024 648th arcpolaris 872 89 18 Nov 2024 653rd nwellnhof 🇩🇪 872 111 4 May 2022 653rd stefangimmillaro 872 111 26 Sep 2023 653rd kkoenig 872 111 4 Jan 2024 656th HPWiz 🇳🇿 871 49 4 May 2022 656th JayXon 🇺🇸 871 49 5 May 2022 656th Steffan153 🇫🇮 871 49 10 Dec 2022 656th ovs-code 🇩🇪 871 49 24 Oct 2023 656th sean-niemann 🇺🇸 871 49 12 Jul 2024 661st dokutan 871 62 28 Apr 2025 662nd inventshah 871 97 6 May 2022 662nd roupiq 🇵🇱 871 97 22 Nov 2023 664th janbehrens 🇩🇪 870 90 21 Apr 2023 664th Yewzir 🇧🇪 870 90 22 Apr 2023 664th DialFrost 🇸🇬 870 90 6 Nov 2023 664th Ripick 870 90 27 Nov 2024 668th GolfingSuccess 🇬🇷 869 71 5 May 2022 668th emplv 🇱🇻 869 71 5 May 2022 668th JayXon 🇺🇸 869 71 7 May 2022 668th m-tkach 🇺🇦 869 71 15 May 2022 668th nwellnhof 🇩🇪 869 71 5 Jun 2022 668th Irratix 🇳🇱 869 71 13 Jun 2022 668th michael-pruglo 🇺🇦 869 71 13 Jul 2022 668th stefangimmillaro 869 71 2 Jun 2023 First Prev 601–675 of 3,374 Next Last