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 150th m-tkach 🇺🇦 938 69 18ms 4 May 2022 150th GolfingSuccess 🇬🇷 938 69 18ms 5 May 2022 150th jared-hughes 938 69 25ms 5 May 2022 150th ovs-code 🇩🇪 938 69 15ms 5 May 2022 150th btnlq 938 69 25ms 5 May 2022 150th sisyphus-ppcg 🇦🇺 938 69 20ms 6 May 2022 150th lynn 938 69 23ms 22 Aug 2022 150th Steffan153 🇫🇮 938 69 20ms 15 Nov 2022 150th AlexanderFair 938 69 29ms 19 Jul 2023 150th pardouin 🇫🇷 938 69 24ms 11 Nov 2023 150th AlephSquirrel 938 69 25ms 30 Dec 2023 150th kg583 🇺🇸 938 69 16ms 28 Jan 2024 150th davecame 938 69 25ms 20 Aug 2024 150th zacjl 938 69 20ms 19 Sep 2024 150th starfihs 938 69 18ms 12 Oct 2024 150th kops-cg 938 69 24ms 9 Feb 2025 150th sean-niemann 🇺🇸 938 69 22ms 7 Mar 2025 150th plcc0 938 69 18ms 26 Mar 2025 150th yujh-yujh 🇬🇸 938 69 17ms 28 Mar 2025 150th moustave 938 69 20ms 10 Jun 2025 150th 4atj 938 69 3,790ms 30 Jun 2025 150th dirckvdende 938 69 16ms 11 Jul 2025 150th xnor-gate 938 69 16ms 19 Aug 2025 150th BrunoVisnadi 🇧🇷 938 69 16ms 1 Oct 2025 150th Mukundan314 938 69 16ms 5 hours ago 176th Irratix 🇳🇱 938 83 409ms 4 May 2022 176th nwellnhof 🇩🇪 938 83 323ms 4 May 2022 176th ScottHamper 938 83 376ms 5 May 2022 176th Romain-1 🇫🇷 938 83 339ms 1 Jun 2022 176th Gaddy 🇫🇷 938 83 426ms 1 Jun 2022 176th 5quiwyrm 938 83 381ms 4 Sep 2022 176th Betuaredead 938 83 426ms 5 Jan 2023 176th Yewzir 🇧🇪 938 83 351ms 12 Feb 2023 176th btnlq 938 83 377ms 9 Mar 2023 176th Adix-null 🇱🇹 938 83 329ms 17 May 2023 176th AdrienHache 🇫🇷 938 83 355ms 8 Jun 2023 176th gblikas 938 83 376ms 23 Jul 2023 176th KrausRaus 🇺🇸 938 83 347ms 31 Jul 2023 176th namelessiw 938 83 329ms 9 Apr 2025 176th dokutan 938 83 420ms 9 Apr 2025 176th m-tkach 🇺🇦 938 83 333ms 10 Apr 2025 176th DialFrost 🇸🇬 938 83 350ms 10 Apr 2025 176th Pecanolith 938 83 353ms 19 Apr 2025 176th Tyrant7 938 83 331ms 19 Apr 2025 176th Yax42 🇫🇷 938 83 374ms 19 Apr 2025 176th MeWhenI 🇻🇦 938 83 352ms 19 Jun 2025 176th sean-niemann 🇺🇸 938 83 358ms 20 Jun 2025 176th stefangimmillaro 938 83 384ms 20 Jun 2025 176th tomh1012 938 83 324ms 28 Aug 2025 176th fuzzylojik-golf 🇺🇸 938 83 300ms 8 Sep 2025 176th CaedenHarper 🇨🇦 938 83 357ms 27 days ago 202nd grey0ut 937 48 2,417ms 8 Apr 2025 203rd GolfingSuccess 🇬🇷 937 49 40ms 12 Aug 2024 203rd Shanethegamer 🇺🇸 937 49 40ms 12 Aug 2024 203rd Steffan153 🇫🇮 937 49 40ms 12 Aug 2024 203rd MeWhenI 🇻🇦 937 49 46ms 13 Aug 2024 203rd DialFrost 🇸🇬 937 49 48ms 13 Aug 2024 203rd GrayJoKing 🇦🇺 937 49 68ms 15 Aug 2024 203rd btnlq 937 49 64ms 16 Aug 2024 203rd emgordon154 937 49 47ms 19 Aug 2024 203rd ovs-code 🇩🇪 937 49 43ms 19 Aug 2024 203rd mousetail 🇳🇱 937 49 60ms 13 Sep 2024 203rd lynn 937 49 43ms 20 Dec 2024 203rd weeble 937 49 46ms 20 Dec 2024 203rd sean-niemann 🇺🇸 937 49 42ms 11 Jan 2025 216th DialFrost 🇸🇬 937 89 342ms 24 Sep 2025 216th ovs-code 🇩🇪 937 89 345ms 24 Sep 2025 216th dokutan 937 89 336ms 24 Sep 2025 216th sean-niemann 🇺🇸 937 89 347ms 24 Sep 2025 216th Shanethegamer 🇺🇸 937 89 340ms 25 Sep 2025 216th nwellnhof 🇩🇪 937 89 340ms 25 Sep 2025 216th m-tkach 🇺🇦 937 89 337ms 25 Sep 2025 216th namelessiw 937 89 340ms 2 Oct 2025 216th Yewzir 🇧🇪 937 89 339ms 2 Oct 2025 216th Yax42 🇫🇷 937 89 335ms 4 Oct 2025 First Prev 151–225 of 3,460 Next Last