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 615th kurkale6ka 901 74 20 Dec 2023 615th Dataen 901 74 10 Jan 2024 615th Anonymousellama21 901 74 14 Mar 2024 615th Bmrl7 901 74 23 Mar 2024 615th cefqrn 901 74 26 May 2024 615th drochom 901 74 18 Jun 2024 615th hiichbindermax 901 74 22 Jun 2024 615th wuzekai518 901 74 9 Jul 2024 615th madex 🇩🇪 901 74 9 Jul 2024 615th cykim8811 901 74 11 Jul 2024 615th imelxr 🇮🇱 901 74 17 Aug 2024 615th EnTerr 901 74 25 Aug 2024 615th Mabeloid 🇳🇴 901 74 1 Sep 2024 615th madeforlosers 901 74 5 Sep 2024 615th LostSyntax21 🇬🇧 901 74 10 Sep 2024 615th Deedogg 901 74 11 Sep 2024 615th MassimoParisi 901 74 18 Sep 2024 615th FortuiteMan 🇫🇷 901 74 10 Oct 2024 615th lifthrasiir 🇰🇷 901 74 13 Nov 2024 615th agreegious 901 74 17 Nov 2024 615th Stockoh 🇫🇷 901 74 17 Nov 2024 615th Andrey135296 901 74 24 Nov 2024 615th TralfamadorianComedian 901 74 6 Dec 2024 615th bltnppcnt 901 74 3 Jan 2025 615th ZorblaxV 901 74 12 Jan 2025 615th yokasuretsu 901 74 13 Jan 2025 615th Artemis21 🇬🇧 901 74 17 Jan 2025 615th gdpr777 901 74 10 Feb 2025 615th Pyroan 901 74 27 Mar 2025 615th Squimbletin 901 74 19 Apr 2025 615th Kowalskiexe 🇵🇱 901 74 19 Apr 2025 615th Dandandooo 901 74 23 Apr 2025 615th khangtm123 901 74 4 May 2025 615th 40fied4t 901 74 6 May 2025 615th keelimeguy 🇺🇸 901 74 13 May 2025 615th TheZwierzLF 🇵🇱 901 74 21 May 2025 615th kbeat 🇰🇿 901 74 21 May 2025 615th LvLError 901 74 29 May 2025 615th Lv0Sys 🇵🇱 901 74 30 May 2025 615th ffelixm 901 74 3 Jun 2025 615th Flekay 🇩🇪 901 74 19 Jun 2025 615th DoubleUynn 901 74 25 Jun 2025 615th osNiko 🇧🇷 901 74 26 Jul 2025 615th wobblybits 901 74 13 Aug 2025 615th denisfouchard 901 74 23 Aug 2025 615th Emutis 🇱🇹 901 74 23 Aug 2025 615th blaztoma 🇱🇹 901 74 24 Aug 2025 615th jatax-ikea 901 74 14 days ago 615th edsrzf 🇳🇿 901 74 13 days ago 615th 1024An 🇮🇳 901 74 12 days ago 726th SirBogman 🇺🇸 899 50 5 May 2022 726th nwellnhof 🇩🇪 899 50 3 Jun 2022 726th Lydxn 🇨🇦 899 50 15 Aug 2022 726th Steffan153 🇫🇮 899 50 9 Aug 2024 730th DialFrost 🇸🇬 899 69 15 Jul 2024 731st nwellnhof 🇩🇪 899 111 4 May 2022 731st emplv 🇱🇻 899 111 5 May 2022 731st Shanethegamer 🇺🇸 899 111 21 Nov 2023 734th GrayJoKing 🇦🇺 898 70 6 May 2022 734th saito-ta 🇯🇵 898 70 21 Dec 2023 734th ovs-code 🇩🇪 898 70 17 Feb 2024 734th trinityy-7 898 70 7 Aug 2025 734th KasperKivimaeki 🇫🇮 898 70 8 Aug 2025 739th Lydxn 🇨🇦 898 72 16 Jul 2023 740th DialFrost 🇸🇬 897 29 15 Mar 2025 741st Lydxn 🇨🇦 897 48 5 May 2022 741st pabloferz 897 48 6 Mar 2024 743rd Steffan153 🇫🇮 896 59 10 Aug 2024 743rd rucin93 🇵🇱 896 59 13 Oct 2024 743rd sean-niemann 🇺🇸 896 59 13 Oct 2024 743rd lukegustafson 🇺🇸 896 59 24 Oct 2024 747th Ripick 896 73 8 May 2023 748th edsrzf 🇳🇿 896 78 26 Oct 2024 749th GrayJoKing 🇦🇺 896 91 19 Jan 2023 750th SiestaGuru 896 131 9 Jan 2023 Prev 676–750 of 3,330 Next
