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 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 QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 898th thej10n 828 78 12 Jun 2024 898th SwordF-Official 828 78 27 Apr 2025 903rd tkr-sh 🇫🇷 827 102 20 Aug 2022 903rd trist224 🇫🇷 827 102 14 Dec 2022 905th trinityy-7 826 94 7 Mar 2024 905th Squimbletin 826 94 19 Apr 2025 907th msbranicky 826 100 5 Oct 2023 907th dokutan 826 100 3 Oct 2024 909th kimbo 🇺🇸 826 119 28 Dec 2022 910th GolfingSuccess 🇬🇷 826 150 18 Jan 2025 910th ovs-code 🇩🇪 826 150 27 Mar 2025 912th TaserTheFox 🇺🇸 825 54 31 May 2023 913th sean-niemann 🇺🇸 825 79 23 Oct 2024 913th DialFrost 🇸🇬 825 79 25 Oct 2024 913th emgordon154 825 79 27 Oct 2024 913th stefangimmillaro 825 79 28 Oct 2024 917th MeWhenI 🇻🇦 824 90 13 Feb 2025 918th RobertHoeh 822 70 28 Jan 2024 918th jamiloBBKing 822 70 31 Jan 2025 920th AlephSquirrel 822 75 12 Jan 2023 920th Yewzir 🇧🇪 822 75 22 Apr 2023 920th Shanethegamer 🇺🇸 822 75 15 May 2023 920th imma-Spring 822 75 15 Nov 2023 920th noahgitsham 822 75 20 Jun 2024 920th not-a-pokemon 822 75 13 Apr 2025 926th Shanethegamer 🇺🇸 821 52 9 Mar 2023 927th Bubbler-4 821 68 15 Nov 2022 927th neel11235813 821 68 31 Dec 2022 927th Rubiksmath 821 68 14 Aug 2023 927th SB-945 821 68 7 Feb 2024 931st DialFrost 🇸🇬 821 86 10 Mar 2025 932nd JRaspass 🇬🇧 819 56 4 May 2022 932nd ChiefChippy2 819 56 4 May 2022 934th wansacis 🇩🇪 819 65 13 May 2022 934th krcs 🇵🇱 819 65 24 Nov 2022 934th ejini6969 819 65 1 Apr 2023 934th InspectorBoat 819 65 25 Oct 2023 934th jake6192 819 65 12 days ago 939th dokutan 819 79 20 Mar 2025 940th Widgitty 819 103 1 Sep 2023 941st ibeucaly 819 120 20 Sep 2022 941st ComputerKWasTaken 🇺🇸 819 120 20 Jan 2025 943rd Irratix 🇳🇱 818 57 29 Jun 2022 944th MeWhenI 🇻🇦 818 58 4 May 2022 944th emgordon154 818 58 26 Jul 2024 946th Natanaelel 🇸🇪 818 79 2 Jun 2022 946th stellartux 818 79 1 Jan 2024 946th dokutan 818 79 27 Apr 2024 946th Mabeloid 🇳🇴 818 79 22 Sep 2024 950th Shanethegamer 🇺🇸 818 83 14 Dec 2024 951st ian-h-chamberlain 🇺🇸 818 101 7 Jul 2022 951st r-brinke 🇳🇱 818 101 24 Feb 2023 951st MeWhenI 🇻🇦 818 101 29 May 2023 951st HumanoidCPU 818 101 7 May 2024 955th ovs-code 🇩🇪 817 66 29 Oct 2022 956th stefangimmillaro 817 68 2 Oct 2022 956th Shanethegamer 🇺🇸 817 68 17 May 2023 958th KrausRaus 🇺🇸 817 79 10 Nov 2022 958th Yewzir 🇧🇪 817 79 28 Mar 2024 958th dokutan 817 79 9 Aug 2024 961st varhammer 🇷🇺 816 103 13 Dec 2023 962nd sisyphus-ppcg 🇦🇺 815 27 22 Jul 2022 962nd GrayJoKing 🇦🇺 815 27 31 Jul 2022 962nd clockworknazo 815 27 17 Aug 2022 962nd JayXon 🇺🇸 815 27 23 Oct 2022 962nd Steffan153 🇫🇮 815 27 15 Nov 2022 962nd betaveros 815 27 4 Jan 2023 962nd neel11235813 815 27 16 Mar 2023 962nd orthoplex 🇨🇽 815 27 5 Oct 2023 962nd lynn 815 27 16 Oct 2023 962nd emgordon154 815 27 13 Sep 2024 972nd m-tkach 🇺🇦 815 59 21 Jan 2024 972nd emgordon154 815 59 22 Oct 2024 972nd GolfingSuccess 🇬🇷 815 59 20 Jan 2025 975th ovs-code 🇩🇪 815 80 23 Oct 2024 Prev 901–975 of 3,055 Next