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 581st keelimeguy 🇺🇸 901 74 13 May 2025 581st TheZwierzLF 🇵🇱 901 74 21 May 2025 581st kbeat 🇰🇿 901 74 21 May 2025 581st LvLError 901 74 29 May 2025 581st Lv0Sys 🇵🇱 901 74 30 May 2025 581st ffelixm 901 74 3 Jun 2025 581st Flekay 🇩🇪 901 74 19 Jun 2025 581st DoubleUynn 901 74 25 Jun 2025 581st osNiko 🇧🇷 901 74 26 Jul 2025 581st wobblybits 901 74 13 Aug 2025 581st denisfouchard 901 74 23 Aug 2025 581st Emutis 🇱🇹 901 74 23 Aug 2025 581st blaztoma 🇱🇹 901 74 24 Aug 2025 581st jatax-ikea 901 74 15 days ago 581st edsrzf 🇳🇿 901 74 14 days ago 581st 1024An 🇮🇳 901 74 13 days ago 692nd SirBogman 🇺🇸 899 50 5 May 2022 692nd nwellnhof 🇩🇪 899 50 3 Jun 2022 692nd Lydxn 🇨🇦 899 50 15 Aug 2022 692nd Steffan153 🇫🇮 899 50 9 Aug 2024 696th DialFrost 🇸🇬 899 69 15 Jul 2024 697th nwellnhof 🇩🇪 899 111 4 May 2022 697th emplv 🇱🇻 899 111 5 May 2022 697th Shanethegamer 🇺🇸 899 111 21 Nov 2023 700th GrayJoKing 🇦🇺 898 70 6 May 2022 700th saito-ta 🇯🇵 898 70 21 Dec 2023 700th ovs-code 🇩🇪 898 70 17 Feb 2024 700th trinityy-7 898 70 7 Aug 2025 700th KasperKivimaeki 🇫🇮 898 70 8 Aug 2025 705th Lydxn 🇨🇦 898 72 16 Jul 2023 706th DialFrost 🇸🇬 897 29 15 Mar 2025 707th Lydxn 🇨🇦 897 48 5 May 2022 707th pabloferz 897 48 6 Mar 2024 709th Steffan153 🇫🇮 896 59 10 Aug 2024 709th rucin93 🇵🇱 896 59 13 Oct 2024 709th sean-niemann 🇺🇸 896 59 13 Oct 2024 709th lukegustafson 🇺🇸 896 59 24 Oct 2024 713th Ripick 896 73 8 May 2023 714th edsrzf 🇳🇿 896 78 26 Oct 2024 715th GrayJoKing 🇦🇺 896 91 19 Jan 2023 716th MichalMarsalek 🇨🇿 895 87 5 May 2022 716th Kloppermand 🇩🇰 895 87 7 Oct 2022 716th bwat2 895 87 6 Apr 2023 719th ovs-code 🇩🇪 894 89 24 Jul 2024 719th jipsong 🇩🇪 894 89 7 Apr 2025 721st oeb25 894 93 16 May 2022 721st snobee 🇨🇦 894 93 8 Dec 2022 721st logvp 894 93 2 Jan 2024 721st elgan65536 894 93 5 Mar 2024 721st smartiel 894 93 12 Aug 2024 721st trist224 🇫🇷 894 93 12 Aug 2024 721st nullie 894 93 19 Dec 2024 721st lolgeny 894 93 22 Feb 2025 729th Shanethegamer 🇺🇸 893 61 31 Oct 2022 729th MeWhenI 🇻🇦 893 61 4 Nov 2022 731st Steffan153 🇫🇮 892 52 31 Dec 2022 732nd stefangimmillaro 892 71 2 Oct 2022 732nd Steffan153 🇫🇮 892 71 23 Feb 2023 732nd Shanethegamer 🇺🇸 892 71 16 May 2023 732nd sean-niemann 🇺🇸 892 71 12 Jul 2024 736th GolfingSuccess 🇬🇷 892 95 5 May 2022 736th Alex-x90 🇺🇸 892 95 4 Dec 2022 736th Mandrzejy 🇵🇱 892 95 22 Mar 2024 739th KatieLG 🇬🇧 891 60 4 May 2022 739th ScottHamper 891 60 5 May 2022 739th Re-Adventures 🇮🇳 891 60 5 May 2022 739th 0x24a537r9 891 60 29 Jul 2022 739th stefangabos 🇷🇴 891 60 19 Aug 2022 739th eranws 891 60 10 Sep 2022 739th GeorgeStechman 🇬🇧 891 60 26 Sep 2022 739th BloodStormKnight 891 60 15 Oct 2022 739th dzshn 891 60 3 Dec 2022 739th biocommando 🇫🇮 891 60 20 Dec 2022 739th Betuaredead 891 60 5 Jan 2023 739th piano-miles 891 60 16 Jan 2023 Prev 676–750 of 3,339 Next
