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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 Minesweeper 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 Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 145th Betuaredead 938 83 426ms 5 Jan 2023 145th Yewzir 🇧🇪 938 83 351ms 12 Feb 2023 145th btnlq 938 83 377ms 9 Mar 2023 145th Adix-null 🇱🇹 938 83 329ms 17 May 2023 145th AdrienHache 🇫🇷 938 83 355ms 8 Jun 2023 145th gblikas 938 83 376ms 23 Jul 2023 145th KrausRaus 🇺🇸 938 83 347ms 31 Jul 2023 145th namelessiw 938 83 329ms 9 Apr 2025 145th dokutan 938 83 420ms 9 Apr 2025 145th m-tkach 🇺🇦 938 83 333ms 10 Apr 2025 145th DialFrost 🇸🇬 938 83 350ms 10 Apr 2025 145th Pecanolith 938 83 353ms 19 Apr 2025 145th Tyrant7 938 83 331ms 19 Apr 2025 145th Yax42 🇫🇷 938 83 374ms 19 Apr 2025 145th MeWhenI 🇻🇦 938 83 352ms 19 Jun 2025 145th sean-niemann 🇺🇸 938 83 358ms 20 Jun 2025 145th stefangimmillaro 938 83 384ms 20 Jun 2025 145th tomh1012 938 83 324ms 28 Aug 2025 145th fuzzylojik-golf 🇺🇸 938 83 300ms 8 Sep 2025 145th CaedenHarper 🇨🇦 938 83 357ms 17 Oct 2025 171st grey0ut 937 48 2,417ms 8 Apr 2025 172nd GolfingSuccess 🇬🇷 937 49 40ms 12 Aug 2024 172nd Shanethegamer 🇺🇸 937 49 40ms 12 Aug 2024 172nd Steffan153 🇫🇮 937 49 40ms 12 Aug 2024 172nd MeWhenI 🇻🇦 937 49 46ms 13 Aug 2024 172nd DialFrost 🇸🇬 937 49 48ms 13 Aug 2024 172nd GrayJoKing 🇦🇺 937 49 68ms 15 Aug 2024 172nd btnlq 937 49 64ms 16 Aug 2024 172nd emgordon154 937 49 47ms 19 Aug 2024 172nd ovs-code 🇩🇪 937 49 43ms 19 Aug 2024 172nd mousetail 🇳🇱 937 49 60ms 13 Sep 2024 172nd lynn 937 49 43ms 20 Dec 2024 172nd weeble 937 49 46ms 20 Dec 2024 172nd sean-niemann 🇺🇸 937 49 42ms 11 Jan 2025 185th DialFrost 🇸🇬 937 89 342ms 24 Sep 2025 185th ovs-code 🇩🇪 937 89 345ms 24 Sep 2025 185th dokutan 937 89 336ms 24 Sep 2025 185th sean-niemann 🇺🇸 937 89 347ms 24 Sep 2025 185th Shanethegamer 🇺🇸 937 89 340ms 25 Sep 2025 185th nwellnhof 🇩🇪 937 89 340ms 25 Sep 2025 185th m-tkach 🇺🇦 937 89 337ms 25 Sep 2025 185th namelessiw 937 89 340ms 2 Oct 2025 185th Yewzir 🇧🇪 937 89 339ms 2 Oct 2025 185th Yax42 🇫🇷 937 89 335ms 4 Oct 2025 185th stefangimmillaro 937 89 345ms 6 Oct 2025 185th CaedenHarper 🇨🇦 937 89 366ms 9 Oct 2025 185th Jacob385 937 89 352ms 19 days ago 185th MeWhenI 🇻🇦 937 89 336ms 8 days ago 185th ethanlally 937 89 348ms 5 days ago 200th nwellnhof 🇩🇪 933 42 356ms 4 May 2022 200th Lydxn 🇨🇦 933 42 1,487ms 4 May 2022 200th GrayJoKing 🇦🇺 933 42 351ms 4 May 2022 200th Steffan153 🇫🇮 933 42 333ms 16 Dec 2022 200th sisyphus-ppcg 🇦🇺 933 42 369ms 31 Jan 2023 200th ovs-code 🇩🇪 933 42 343ms 30 Dec 2023 200th sean-niemann 🇺🇸 933 42 365ms 8 Mar 2025 207th emplv 🇱🇻 933 60 9ms 5 May 2022 207th GrayJoKing 🇦🇺 933 60 9ms 6 May 2022 207th targrik 933 60 10ms 24 Dec 2024 207th xsot 🇸🇬 933 60 9ms 1 May 2025 211th m-tkach 🇺🇦 932 91 56ms 5 May 2022 211th 09cf 932 91 53ms 4 Oct 2023 213th GrayJoKing 🇦🇺 931 56 416ms 15 Jan 2024 213th AlephSquirrel 931 56 704ms 21 Jan 2024 215th MeWhenI 🇻🇦 931 68 88ms 23 Feb 2023 215th JayXon 🇺🇸 931 68 91ms 4 Mar 2025 217th ovs-code 🇩🇪 930 60 5ms 9 Oct 2023 217th GrayJoKing 🇦🇺 930 60 5ms 11 Oct 2023 217th Lydxn 🇨🇦 930 60 5ms 11 Oct 2023 217th GolfingSuccess 🇬🇷 930 60 4ms 16 Nov 2023 217th Steffan153 🇫🇮 930 60 5ms 28 Jan 2024 217th JayXon 🇺🇸 930 60 4ms 29 Jan 2024 217th rucin93 🇵🇱 930 60 5ms 10 Jul 2024 217th sean-niemann 🇺🇸 930 60 5ms 10 Jul 2024 225th Lydxn 🇨🇦 930 70 105ms 17 Oct 2022 First Prev 151–225 of 3,468 Next Last