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 899th janbehrens 🇩🇪 882 96 21 Apr 2023 899th Shanethegamer 🇺🇸 882 96 15 May 2023 899th Yewzir 🇧🇪 882 96 11 Nov 2023 899th MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 899th kkoenig 882 96 21 Dec 2023 899th BlankSpruce 882 96 20 Aug 2024 899th fuzzylojik-golf 🇺🇸 882 96 14 Jun 2025 908th ravnskjaer 🇩🇰 882 133 11 Sep 2024 909th GrayJoKing 🇦🇺 881 60 24 Oct 2024 910th kg583 🇺🇸 881 84 27 days ago 911th Shanethegamer 🇺🇸 879 73 8 May 2025 911th DialFrost 🇸🇬 879 73 3 Jun 2025 911th edsrzf 🇳🇿 879 73 4 Jul 2025 914th Grrisly 879 74 25 Mar 2024 915th GrayJoKing 🇦🇺 879 84 19 Jun 2022 915th primo-ppcg 🇹🇭 879 84 29 Jun 2022 917th Shanethegamer 🇺🇸 879 142 27 Mar 2025 917th DialFrost 🇸🇬 879 142 28 Mar 2025 917th emgordon154 879 142 10 Apr 2025 920th primo-ppcg 🇹🇭 879 193 12 days ago 921st dokutan 878 62 28 Apr 2025 922nd johnnythedoggie 878 72 13 May 2022 922nd kaascevich 878 72 8 Jul 2025 924th c0d3-4-F00d 🇩🇪 877 61 6 May 2022 924th jackkav 877 61 26 Jun 2022 924th TechNolaByte 877 61 6 Jul 2022 924th Heathcorp 🇦🇺 877 61 17 Jul 2022 924th C0de5mith 🇺🇸 877 61 3 Aug 2022 924th sebipopa 🇷🇴 877 61 18 Aug 2022 924th moikaturns 🇬🇧 877 61 25 Sep 2022 924th FlorianCassayre 🇫🇷 877 61 27 Sep 2022 924th Mazn3k 877 61 1 Feb 2023 924th tvcv901 877 61 22 Mar 2023 924th unfinishedprogram 877 61 19 Jul 2023 924th snoozingnewt 🇺🇸 877 61 23 Sep 2023 924th funnyboy-roks 877 61 9 May 2024 924th bac0id 877 61 29 Jun 2024 924th madex 🇩🇪 877 61 9 Jul 2024 924th FortuiteMan 877 61 10 Oct 2024 924th RobertHoeh 877 61 5 Apr 2025 924th LvLError 877 61 29 May 2025 924th Lv0Sys 🇵🇱 877 61 30 May 2025 924th miles-evan 877 61 21 days ago 944th Shanethegamer 🇺🇸 877 66 4 May 2022 944th scpchicken 🇵🇼 877 66 5 May 2022 944th sisyphus-ppcg 🇦🇺 877 66 6 May 2022 944th Natanaelel 🇸🇪 877 66 15 Jun 2022 944th Z-snails 877 66 27 Feb 2023 944th Jeremy-Stafford 877 66 27 Feb 2023 944th alomiF 877 66 1 Sep 2023 944th btnlq 877 66 17 Oct 2023 952nd guilhem-roy 🇫🇷 877 76 5 May 2022 952nd NewDefectus 🇮🇱 877 76 6 May 2022 952nd CuboidRaptor 🇨🇦 877 76 25 May 2022 952nd TheSmilingTurtle 877 76 5 Jun 2022 952nd Romain-1 🇫🇷 877 76 8 Jun 2022 952nd jhpaques 🇫🇷 877 76 30 Jul 2022 952nd chriscianfarani 877 76 10 Aug 2022 952nd eshilo-draper 877 76 13 Sep 2022 952nd suwat513 877 76 22 Sep 2022 952nd Jaydosu 877 76 14 Nov 2022 952nd tails618 877 76 2 Dec 2022 952nd KevinLyvers 877 76 17 Dec 2022 952nd nayakrujul 877 76 3 Jan 2023 952nd CheeseCake628 🇳🇴 877 76 8 Jan 2023 952nd CatsAreFluffy 877 76 18 Feb 2023 952nd adamnielson42 🇺🇸 877 76 1 Mar 2023 952nd Schreipfelerer 877 76 9 Apr 2023 952nd hm5822 877 76 22 Apr 2023 952nd celiendonze 🇨🇭 877 76 5 Jul 2023 952nd brochmann 🇸🇪 877 76 13 Aug 2023 952nd Command-Master 877 76 2 Oct 2023 952nd chartung17 877 76 17 Dec 2023 952nd smokestacklightnin 🇺🇸 877 76 10 Jan 2024 952nd NickTheEASDude 🇺🇸 877 76 26 Jan 2024 Prev 901–975 of 3,281 Next