Collatz in all languages in bytes. 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 Bytes Time 898th Shanethegamer 🇺🇸 882 96 15 May 2023 898th Yewzir 🇧🇪 882 96 11 Nov 2023 898th MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 898th kkoenig 882 96 21 Dec 2023 898th BlankSpruce 882 96 20 Aug 2024 898th fuzzylojik-golf 🇺🇸 882 96 14 Jun 2025 907th ravnskjaer 🇩🇰 882 133 11 Sep 2024 908th GrayJoKing 🇦🇺 881 60 24 Oct 2024 909th kg583 🇺🇸 881 84 27 days ago 910th Shanethegamer 🇺🇸 879 73 8 May 2025 910th DialFrost 🇸🇬 879 73 3 Jun 2025 910th edsrzf 🇳🇿 879 73 4 Jul 2025 913th Grrisly 879 74 25 Mar 2024 914th GrayJoKing 🇦🇺 879 84 19 Jun 2022 914th primo-ppcg 🇹🇭 879 84 29 Jun 2022 916th Shanethegamer 🇺🇸 879 142 27 Mar 2025 916th DialFrost 🇸🇬 879 142 28 Mar 2025 916th emgordon154 879 142 10 Apr 2025 919th primo-ppcg 🇹🇭 879 193 11 days ago 920th dokutan 878 62 28 Apr 2025 921st johnnythedoggie 878 72 13 May 2022 921st kaascevich 878 72 8 Jul 2025 923rd Shanethegamer 🇺🇸 877 66 4 May 2022 923rd scpchicken 🇵🇼 877 66 5 May 2022 923rd sisyphus-ppcg 🇦🇺 877 66 6 May 2022 923rd Natanaelel 🇸🇪 877 66 15 Jun 2022 923rd Z-snails 877 66 27 Feb 2023 923rd Jeremy-Stafford 877 66 27 Feb 2023 923rd alomiF 877 66 1 Sep 2023 923rd btnlq 877 66 17 Oct 2023 931st guilhem-roy 🇫🇷 877 76 5 May 2022 931st NewDefectus 🇮🇱 877 76 6 May 2022 931st CuboidRaptor 🇨🇦 877 76 25 May 2022 931st TheSmilingTurtle 877 76 5 Jun 2022 931st Romain-1 🇫🇷 877 76 8 Jun 2022 931st jhpaques 🇫🇷 877 76 30 Jul 2022 931st chriscianfarani 877 76 10 Aug 2022 931st eshilo-draper 877 76 13 Sep 2022 931st suwat513 877 76 22 Sep 2022 931st Jaydosu 877 76 14 Nov 2022 931st tails618 877 76 2 Dec 2022 931st KevinLyvers 877 76 17 Dec 2022 931st nayakrujul 877 76 3 Jan 2023 931st CheeseCake628 🇳🇴 877 76 8 Jan 2023 931st CatsAreFluffy 877 76 18 Feb 2023 931st adamnielson42 🇺🇸 877 76 1 Mar 2023 931st Schreipfelerer 877 76 9 Apr 2023 931st hm5822 877 76 22 Apr 2023 931st celiendonze 🇨🇭 877 76 5 Jul 2023 931st brochmann 🇸🇪 877 76 13 Aug 2023 931st Command-Master 877 76 2 Oct 2023 931st chartung17 877 76 17 Dec 2023 931st smokestacklightnin 🇺🇸 877 76 10 Jan 2024 931st NickTheEASDude 🇺🇸 877 76 26 Jan 2024 931st yuchuehw 877 76 2 Feb 2024 931st Azearia 877 76 26 Feb 2024 931st tpasfieldERAU 877 76 18 May 2024 931st khavik 877 76 29 May 2024 931st Ythaenagor 877 76 5 Aug 2024 931st martion2007 877 76 9 Aug 2024 931st sjrct 877 76 10 Aug 2024 931st Mathrew2012 877 76 9 Nov 2024 931st kawrei 877 76 4 May 2025 931st RaBa21 🇭🇺 877 76 19 Jul 2025 965th c0d3-4-F00d 🇩🇪 876 61 6 May 2022 965th jackkav 876 61 26 Jun 2022 965th TechNolaByte 876 61 6 Jul 2022 965th Heathcorp 🇦🇺 876 61 17 Jul 2022 965th C0de5mith 🇺🇸 876 61 3 Aug 2022 965th sebipopa 🇷🇴 876 61 18 Aug 2022 965th moikaturns 🇬🇧 876 61 25 Sep 2022 965th FlorianCassayre 🇫🇷 876 61 27 Sep 2022 965th Mazn3k 876 61 1 Feb 2023 965th tvcv901 876 61 22 Mar 2023 965th unfinishedprogram 876 61 19 Jul 2023 Prev 901–975 of 3,280 Next
