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 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 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 Mandelbrot 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 Mandelbrot 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 824th Haksell 🇦🇶 887 53 22 Feb 2023 827th ovs-code 🇩🇪 887 151 9 Sep 2023 827th Yewzir 🇧🇪 887 151 21 May 2024 829th GolfingSuccess 🇬🇷 885 71 5 May 2022 829th emplv 🇱🇻 885 71 5 May 2022 829th JayXon 🇺🇸 885 71 7 May 2022 829th nwellnhof 🇩🇪 885 71 5 Jun 2022 829th stefangimmillaro 885 71 2 Jun 2023 829th 09cf 885 71 4 Oct 2023 829th kkoenig 885 71 21 Dec 2023 829th sean-niemann 🇺🇸 885 71 10 Jul 2024 829th masinag 🇮🇹 885 71 6 Oct 2024 829th KasperKivimaeki 🇫🇮 885 71 27 Mar 2025 839th m-tkach 🇺🇦 885 117 7 May 2022 839th Lydxn 🇨🇦 885 117 7 May 2022 841st Shanethegamer 🇺🇸 884 70 12 Dec 2022 841st Alessandro-Balconi 🇮🇹 884 70 26 Dec 2022 843rd SiestaGuru 884 88 9 Jan 2023 843rd rifatx 884 88 5 Jul 2024 845th janbehrens 🇩🇪 884 90 21 Apr 2023 845th Yewzir 🇧🇪 884 90 22 Apr 2023 845th DialFrost 🇸🇬 884 90 6 Nov 2023 845th Ripick 884 90 27 Nov 2024 849th m-tkach 🇺🇦 884 112 3 hours ago 850th jared-hughes 884 130 15 Dec 2024 851st m-tkach 🇺🇦 883 59 21 Jan 2024 851st GolfingSuccess 🇬🇷 883 59 20 Jan 2025 853rd nipzu 883 94 17 May 2022 853rd Natanaelel 🇸🇪 883 94 17 Jun 2022 853rd nkoppel 883 94 19 Oct 2022 853rd ovs-code 🇩🇪 883 94 21 Jun 2023 853rd mousetail 🇳🇱 883 94 12 Jan 2024 858th Shanethegamer 🇺🇸 882 51 15 May 2023 859th primo-ppcg 🇹🇭 882 85 14 Jan 2025 859th MeWhenI 🇻🇦 882 85 21 Apr 2025 861st Irratix 🇳🇱 882 96 4 May 2022 861st MeWhenI 🇻🇦 882 96 1 Jun 2022 861st janbehrens 🇩🇪 882 96 21 Apr 2023 861st Shanethegamer 🇺🇸 882 96 15 May 2023 861st Yewzir 🇧🇪 882 96 11 Nov 2023 861st MateuszPietrzak 🇵🇱 882 96 18 Nov 2023 861st kkoenig 882 96 21 Dec 2023 861st BlankSpruce 882 96 20 Aug 2024 861st fuzzylojik-golf 🇺🇸 882 96 8 days ago 870th GrayJoKing 🇦🇺 881 60 24 Oct 2024 871st ovs-code 🇩🇪 881 73 22 Jul 2023 872nd steffan-polygolf 881 74 14 Feb 2024 873rd ravnskjaer 🇩🇰 881 133 11 Sep 2024 874th Shanethegamer 🇺🇸 881 152 9 Sep 2023 874th emgordon154 881 152 2 Oct 2024 874th DialFrost 🇸🇬 881 152 27 Oct 2024 877th Shanethegamer 🇺🇸 879 142 27 Mar 2025 877th DialFrost 🇸🇬 879 142 28 Mar 2025 877th emgordon154 879 142 10 Apr 2025 880th Grrisly 878 74 25 Mar 2024 881st GrayJoKing 🇦🇺 878 84 19 Jun 2022 881st primo-ppcg 🇹🇭 878 84 29 Jun 2022 883rd dokutan 877 62 28 Apr 2025 884th Shanethegamer 🇺🇸 877 66 4 May 2022 884th scpchicken 🇵🇼 877 66 5 May 2022 884th sisyphus-ppcg 🇦🇺 877 66 6 May 2022 884th Natanaelel 🇸🇪 877 66 15 Jun 2022 884th Z-snails 877 66 27 Feb 2023 884th Jeremy-Stafford 877 66 27 Feb 2023 884th alomiF 877 66 1 Sep 2023 884th btnlq 877 66 17 Oct 2023 892nd Shanethegamer 🇺🇸 877 73 8 May 2025 892nd DialFrost 🇸🇬 877 73 19 days ago 894th c0d3-4-F00d 🇩🇪 876 61 6 May 2022 894th jackkav 876 61 26 Jun 2022 894th TechNolaByte 876 61 6 Jul 2022 894th Heathcorp 🇦🇺 876 61 17 Jul 2022 894th C0de5mith 🇺🇸 876 61 3 Aug 2022 894th sebipopa 🇷🇴 876 61 18 Aug 2022 894th moikaturns 🇬🇧 876 61 25 Sep 2022 Prev 826–900 of 3,152 Next