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 443rd Steffan153 🇫🇮 896 69 17ms 15 Nov 2022 443rd AlexanderFair 896 69 23ms 19 Jul 2023 443rd pardouin 🇫🇷 896 69 16ms 11 Nov 2023 443rd AlephSquirrel 896 69 16ms 30 Dec 2023 443rd kg583 🇺🇸 896 69 19ms 28 Jan 2024 443rd davecame 896 69 22ms 20 Aug 2024 443rd zacjl 896 69 16ms 19 Sep 2024 443rd starfihs 896 69 16ms 12 Oct 2024 443rd kops-cg 896 69 22ms 9 Feb 2025 443rd sean-niemann 🇺🇸 896 69 17ms 7 Mar 2025 443rd plcc0 896 69 16ms 26 Mar 2025 443rd yujh-yujh 🇬🇸 896 69 16ms 28 Mar 2025 443rd moustave 896 69 17ms 10 Jun 2025 443rd 4atj 896 69 3,348ms 30 Jun 2025 443rd dirckvdende 896 69 16ms 11 Jul 2025 443rd xnor-gate 896 69 17ms 19 Aug 2025 443rd BrunoVisnadi 🇧🇷 896 69 18ms 1 Oct 2025 443rd Mukundan314 896 69 16ms 2 days ago 469th Ripick 896 73 121ms 8 May 2023 470th ovs-code 🇩🇪 896 89 457ms 24 Jul 2024 470th jipsong 🇩🇪 896 89 467ms 7 Apr 2025 472nd MichalMarsalek 🇨🇿 895 87 334ms 5 May 2022 472nd Kloppermand 🇩🇰 895 87 343ms 7 Oct 2022 472nd bwat2 895 87 321ms 6 Apr 2023 475th oeb25 894 93 152ms 16 May 2022 475th snobee 🇨🇦 894 93 155ms 8 Dec 2022 475th logvp 894 93 130ms 2 Jan 2024 475th elgan65536 894 93 124ms 5 Mar 2024 475th smartiel 894 93 120ms 12 Aug 2024 475th trist224 🇫🇷 894 93 126ms 12 Aug 2024 475th nullie 894 93 126ms 19 Dec 2024 475th lolgeny 894 93 128ms 22 Feb 2025 483rd Shanethegamer 🇺🇸 893 61 6ms 31 Oct 2022 483rd MeWhenI 🇻🇦 893 61 5ms 4 Nov 2022 485th JayXon 🇺🇸 893 74 3,078ms 14 Nov 2024 486th GolfingSuccess 🇬🇷 893 95 54ms 5 May 2022 486th Alex-x90 🇺🇸 893 95 56ms 4 Dec 2022 486th Mandrzejy 🇵🇱 893 95 57ms 22 Mar 2024 489th m-tkach 🇺🇦 893 117 27ms 7 May 2022 489th Lydxn 🇨🇦 893 117 28ms 7 May 2022 491st Steffan153 🇫🇮 892 52 7ms 31 Dec 2022 492nd DialFrost 🇸🇬 892 56 820ms 1 Sep 2025 493rd KatieLG 🇬🇧 892 60 13ms 4 May 2022 493rd ScottHamper 892 60 10ms 5 May 2022 493rd Re-Adventures 🇮🇳 892 60 10ms 5 May 2022 493rd 0x24a537r9 892 60 10ms 29 Jul 2022 493rd stefangabos 🇷🇴 892 60 10ms 19 Aug 2022 493rd eranws 892 60 10ms 10 Sep 2022 493rd GeorgeStechman 🇬🇧 892 60 10ms 26 Sep 2022 493rd BloodStormKnight 892 60 10ms 15 Oct 2022 493rd dzshn 892 60 10ms 3 Dec 2022 493rd biocommando 🇫🇮 892 60 10ms 20 Dec 2022 493rd Betuaredead 892 60 9ms 5 Jan 2023 493rd piano-miles 892 60 10ms 16 Jan 2023 493rd Yewzir 🇧🇪 892 60 10ms 12 Feb 2023 493rd shellbertt 🇨🇦 892 60 11ms 26 Feb 2023 493rd zakariamouhid 892 60 10ms 20 May 2023 493rd raphaelimahorn 892 60 10ms 23 Aug 2023 493rd jbt 892 60 10ms 25 Dec 2023 493rd olleicua 🇺🇸 892 60 10ms 15 Feb 2024 493rd HumanoidCPU 892 60 9ms 3 May 2024 493rd dokutan 892 60 11ms 13 Aug 2024 493rd LostSyntax21 🇬🇧 892 60 11ms 10 Sep 2024 493rd xyangst 892 60 11ms 28 Sep 2024 493rd a6166231 🇨🇳 892 60 9ms 15 May 2025 493rd Protothor 892 60 11ms 8 Jul 2025 493rd SebassNoob 892 60 10ms 5 Aug 2025 493rd Yax42 🇫🇷 892 60 9ms 5 Sep 2025 493rd levinwinter 892 60 9ms 24 days ago 520th stefangimmillaro 892 71 89ms 2 Oct 2022 520th Steffan153 🇫🇮 892 71 90ms 23 Feb 2023 520th Shanethegamer 🇺🇸 892 71 89ms 16 May 2023 520th sean-niemann 🇺🇸 892 71 92ms 12 Jul 2024 524th RockOfStone 892 73 5ms 26 days ago 525th sean-niemann 🇺🇸 892 109 261ms 25 May 2024 First Prev 451–525 of 3,465 Next Last
