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 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 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 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 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 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 Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 222nd hallvabo 🇳🇴 939 71 7 Feb 2023 222nd anter69 🇭🇺 939 71 21 May 2024 222nd rucin93 🇵🇱 939 71 10 Jul 2024 222nd lelbal 939 71 26 Aug 2025 222nd HETHAT 🇩🇿 939 71 16 mins ago 231st Lydxn 🇨🇦 939 125 6 May 2022 231st JayXon 🇺🇸 939 125 9 May 2022 233rd inventshah 938 57 4 May 2022 233rd itsh01 938 57 17 May 2022 233rd Natanaelel 🇸🇪 938 57 16 Jun 2022 233rd Attero 🇸🇪 938 57 3 Aug 2022 233rd SirFireball3521 938 57 26 Jan 2023 233rd Kacarott 🇦🇺 938 57 24 Mar 2023 233rd nathanadams 🇳🇿 938 57 24 Apr 2023 233rd hacker112 🇸🇪 938 57 20 Jun 2024 233rd thisishowmymindworks 🇳🇴 938 57 28 Jun 2024 233rd Salutations45 938 57 18 Nov 2024 233rd daniel-cardone 938 57 3 Jul 2025 244th primo-ppcg 🇹🇭 938 58 13 Nov 2022 244th clockworknazo 938 58 15 Nov 2022 244th Lydxn 🇨🇦 938 58 7 Feb 2023 244th xsot 🇸🇬 938 58 28 Jun 2024 244th Salutations45 938 58 18 Dec 2024 249th Irratix 🇳🇱 938 83 4 May 2022 249th nwellnhof 🇩🇪 938 83 4 May 2022 249th ScottHamper 938 83 5 May 2022 249th Romain-1 🇫🇷 938 83 1 Jun 2022 249th Gaddy 🇫🇷 938 83 1 Jun 2022 249th 5quiwyrm 938 83 4 Sep 2022 249th Betuaredead 938 83 5 Jan 2023 249th Yewzir 🇧🇪 938 83 12 Feb 2023 249th btnlq 938 83 9 Mar 2023 249th Adix-null 🇱🇹 938 83 17 May 2023 249th AdrienHache 🇫🇷 938 83 8 Jun 2023 249th gblikas 938 83 23 Jul 2023 249th KrausRaus 🇺🇸 938 83 31 Jul 2023 249th namelessiw 938 83 9 Apr 2025 249th dokutan 938 83 9 Apr 2025 249th m-tkach 🇺🇦 938 83 10 Apr 2025 249th DialFrost 🇸🇬 938 83 10 Apr 2025 249th Pecanolith 938 83 19 Apr 2025 249th Tyrant7 938 83 19 Apr 2025 249th Yax42 🇫🇷 938 83 19 Apr 2025 249th MeWhenI 🇻🇦 938 83 19 Jun 2025 249th sean-niemann 🇺🇸 938 83 20 Jun 2025 249th stefangimmillaro 938 83 20 Jun 2025 249th tomh1012 938 83 26 days ago 249th fuzzylojik-golf 🇺🇸 938 83 15 days ago 274th grey0ut 937 48 8 Apr 2025 275th GolfingSuccess 🇬🇷 937 49 12 Aug 2024 275th Shanethegamer 🇺🇸 937 49 12 Aug 2024 275th Steffan153 🇫🇮 937 49 12 Aug 2024 275th MeWhenI 🇻🇦 937 49 13 Aug 2024 275th DialFrost 🇸🇬 937 49 13 Aug 2024 275th GrayJoKing 🇦🇺 937 49 15 Aug 2024 275th btnlq 937 49 16 Aug 2024 275th emgordon154 937 49 19 Aug 2024 275th ovs-code 🇩🇪 937 49 19 Aug 2024 275th mousetail 🇳🇱 937 49 13 Sep 2024 275th lynn 937 49 20 Dec 2024 275th weeble 937 49 20 Dec 2024 275th sean-niemann 🇺🇸 937 49 11 Jan 2025 288th nwellnhof 🇩🇪 933 42 4 May 2022 288th Lydxn 🇨🇦 933 42 4 May 2022 288th GrayJoKing 🇦🇺 933 42 4 May 2022 288th Steffan153 🇫🇮 933 42 16 Dec 2022 288th sisyphus-ppcg 🇦🇺 933 42 31 Jan 2023 288th ovs-code 🇩🇪 933 42 30 Dec 2023 288th sean-niemann 🇺🇸 933 42 8 Mar 2025 295th emplv 🇱🇻 932 60 5 May 2022 295th GrayJoKing 🇦🇺 932 60 6 May 2022 295th targrik 932 60 24 Dec 2024 295th xsot 🇸🇬 932 60 1 May 2025 299th stefangimmillaro 932 126 4 May 2022 299th Irratix 🇳🇱 932 126 4 May 2022 Prev 226–300 of 3,331 Next