Collatz in all languages in chars. 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 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 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 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 Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 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 Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 376th ovs-code 🇩🇪 902 67 13 Dec 2022 376th Steffan153 🇫🇮 902 67 18 Dec 2022 376th Lydxn 🇨🇦 902 67 4 Feb 2023 376th DialFrost 🇸🇬 902 67 17 Mar 2025 380th shellbertt 🇨🇦 901 62 4 May 2022 380th ZakkkkAttackkkk 🇵🇭 901 62 5 May 2022 380th annaproxy 901 62 8 Jun 2022 380th bob-th 901 62 9 Jul 2022 380th btjones0 901 62 15 Jul 2022 380th tri1212 🇻🇳 901 62 18 Jul 2022 380th fredrik-bakke 🇳🇴 901 62 5 Oct 2022 380th jakobkordez 🇸🇮 901 62 19 Oct 2022 380th Fishron 901 62 29 Nov 2022 380th KatieLG 🇬🇧 901 62 11 Dec 2022 380th ItsMeNoobieboy 901 62 20 Dec 2022 380th firegene 🇮🇪 901 62 3 Jan 2023 380th packkill 901 62 13 Feb 2023 380th 2011-Chan-Ethan 901 62 9 Jul 2023 380th elgan65536 901 62 18 Nov 2023 380th Dataen 901 62 16 Jan 2024 380th Yewzir 🇧🇪 901 62 5 Apr 2024 380th cuboids 901 62 11 Jul 2024 380th wuzekai518 901 62 26 Jul 2024 380th abhishekg999 901 62 17 Sep 2024 380th lifthrasiir 🇰🇷 901 62 16 Nov 2024 380th Artemis21 🇬🇧 901 62 17 Jan 2025 380th lolgeny 901 62 22 Feb 2025 380th keelimeguy 🇺🇸 901 62 15 May 2025 380th Flekay 901 62 23 hours ago 405th krcs 🇵🇱 901 86 10 May 2022 405th billings7 🇬🇧 901 86 15 May 2022 405th revlayle 🇺🇸 901 86 7 Dec 2022 408th MeWhenI 🇻🇦 901 109 9 Feb 2023 408th CaedenHarper 🇨🇦 901 109 28 Jan 2025 410th Shanethegamer 🇺🇸 900 77 15 May 2023 411th Betuaredead 899 60 5 Jan 2023 411th Yewzir 🇧🇪 899 60 12 Feb 2023 411th Steffan153 🇫🇮 899 60 23 Feb 2023 411th DialFrost 🇸🇬 899 60 30 Jul 2024 411th GolfingSuccess 🇬🇷 899 60 16 Oct 2024 411th sean-niemann 🇺🇸 899 60 7 Mar 2025 417th Lydxn 🇨🇦 899 64 1 Apr 2023 418th bwat2 899 130 5 May 2022 419th GrayJoKing 🇦🇺 898 71 10 Aug 2023 420th Kacarott 🇦🇺 898 79 13 Jun 2024 421st stefangimmillaro 898 92 24 Oct 2023 421st inverseLorentz 🇦🇺 898 92 27 May 2024 421st sean-niemann 🇺🇸 898 92 11 days ago 424th michael-pruglo 🇺🇦 898 94 5 Jul 2022 424th zygoloid 898 94 5 Aug 2024 426th shinh 897 52 29 Jun 2022 426th MeWhenI 🇻🇦 897 52 25 Jul 2023 426th pardouin 🇫🇷 897 52 12 Apr 2025 429th Shanethegamer 🇺🇸 897 72 4 May 2022 429th jared-hughes 897 72 4 May 2022 429th Waffle3z 897 72 5 May 2022 429th Blendi-Goose 897 72 16 Mar 2025 429th edsrzf 🇳🇿 897 72 12 Apr 2025 434th marshallward 🇺🇸 897 83 10 May 2022 435th m-tkach 🇺🇦 897 90 7 Dec 2023 436th GolfingSuccess 🇬🇷 896 64 14 Dec 2024 436th MeWhenI 🇻🇦 896 64 24 Dec 2024 438th m-tkach 🇺🇦 896 72 16 Oct 2022 438th GrayJoKing 🇦🇺 896 72 22 Oct 2022 438th emplv 🇱🇻 896 72 27 Oct 2022 438th sean-niemann 🇺🇸 896 72 7 Mar 2025 442nd DialFrost 🇸🇬 896 77 27 Feb 2025 443rd Lydxn 🇨🇦 895 70 7 May 2022 444th Shanethegamer 🇺🇸 895 81 19 Dec 2023 444th edsrzf 🇳🇿 895 81 6 Jan 2025 446th MeWhenI 🇻🇦 894 63 5 May 2022 447th MeWhenI 🇻🇦 894 71 20 Aug 2024 448th Lydxn 🇨🇦 893 69 12 Sep 2022 448th GrayJoKing 🇦🇺 893 69 12 Sep 2022 448th btnlq 893 69 24 Sep 2022 Prev 376–450 of 3,112 Next