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 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 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 QR Encoder Quadratic Formula Scrambled Alphabetization 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 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 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 QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 900th ovs-code 🇩🇪 826 150 27 Mar 2025 902nd TaserTheFox 🇺🇸 825 54 31 May 2023 903rd kimbo 🇺🇸 825 119 28 Dec 2022 904th MeWhenI 🇻🇦 824 90 13 Feb 2025 905th RobertHoeh 822 70 28 Jan 2024 905th jamiloBBKing 822 70 31 Jan 2025 907th AlephSquirrel 822 75 12 Jan 2023 907th Yewzir 🇧🇪 822 75 22 Apr 2023 907th Shanethegamer 🇺🇸 822 75 15 May 2023 907th imma-Spring 822 75 15 Nov 2023 907th noahgitsham 822 75 20 Jun 2024 907th not-a-pokemon 822 75 21 days ago 913th Shanethegamer 🇺🇸 821 52 9 Mar 2023 914th Bubbler-4 821 68 15 Nov 2022 914th neel11235813 821 68 31 Dec 2022 914th Rubiksmath 821 68 14 Aug 2023 914th SB-945 821 68 7 Feb 2024 918th DialFrost 🇸🇬 821 86 10 Mar 2025 919th JRaspass 🇬🇧 819 56 4 May 2022 919th ChiefChippy2 819 56 4 May 2022 921st dokutan 819 79 20 Mar 2025 922nd Widgitty 819 103 1 Sep 2023 923rd Irratix 🇳🇱 818 57 29 Jun 2022 924th MeWhenI 🇻🇦 818 58 4 May 2022 924th emgordon154 818 58 26 Jul 2024 926th wansacis 🇩🇪 818 65 13 May 2022 926th krcs 🇵🇱 818 65 24 Nov 2022 926th ejini6969 818 65 1 Apr 2023 926th InspectorBoat 818 65 25 Oct 2023 930th Natanaelel 🇸🇪 818 79 2 Jun 2022 930th stellartux 818 79 1 Jan 2024 930th dokutan 818 79 27 Apr 2024 930th Mabeloid 🇳🇴 818 79 22 Sep 2024 934th Shanethegamer 🇺🇸 818 83 14 Dec 2024 935th ian-h-chamberlain 🇺🇸 818 101 7 Jul 2022 935th r-brinke 🇳🇱 818 101 24 Feb 2023 935th MeWhenI 🇻🇦 818 101 29 May 2023 935th HumanoidCPU 818 101 7 May 2024 939th ibeucaly 818 120 20 Sep 2022 939th ComputerKWasTaken 🇺🇸 818 120 20 Jan 2025 941st ovs-code 🇩🇪 817 66 29 Oct 2022 942nd stefangimmillaro 817 68 2 Oct 2022 942nd Shanethegamer 🇺🇸 817 68 17 May 2023 944th nstearns96 🇬🇧 816 75 12 Dec 2022 944th snoozingnewt 🇺🇸 816 75 20 Oct 2023 944th dokutan 816 75 28 Jul 2024 947th KrausRaus 🇺🇸 816 79 10 Nov 2022 947th Yewzir 🇧🇪 816 79 28 Mar 2024 947th dokutan 816 79 9 Aug 2024 950th MeWhenI 🇻🇦 816 82 24 Oct 2024 951st varhammer 🇷🇺 816 103 13 Dec 2023 952nd sisyphus-ppcg 🇦🇺 815 27 22 Jul 2022 952nd GrayJoKing 🇦🇺 815 27 31 Jul 2022 952nd clockworknazo 815 27 17 Aug 2022 952nd JayXon 🇺🇸 815 27 23 Oct 2022 952nd Steffan153 🇫🇮 815 27 15 Nov 2022 952nd betaveros 815 27 4 Jan 2023 952nd neel11235813 815 27 16 Mar 2023 952nd orthoplex 🇨🇽 815 27 5 Oct 2023 952nd lynn 815 27 16 Oct 2023 952nd emgordon154 815 27 13 Sep 2024 962nd Shanethegamer 🇺🇸 815 91 13 Feb 2025 962nd DialFrost 🇸🇬 815 91 14 Feb 2025 964th m-tkach 🇺🇦 814 59 21 Jan 2024 964th emgordon154 814 59 22 Oct 2024 964th GolfingSuccess 🇬🇷 814 59 20 Jan 2025 967th msbranicky 813 163 8 Jan 2024 967th Lorenzo-St 813 163 12 Jul 2024 969th Natanaelel 🇸🇪 812 87 15 Jun 2022 970th Yewzir 🇧🇪 811 37 10 Dec 2023 970th DialFrost 🇸🇬 811 37 7 Feb 2024 970th emgordon154 811 37 18 Sep 2024 970th copy 811 37 5 Apr 2025 974th ZakkkkAttackkkk 🇵🇭 811 76 23 Jul 2022 974th janbehrens 🇩🇪 811 76 21 Apr 2023 Prev 901–975 of 3,005 Next