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 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 Chars Time 899th rdmsr 833 74 24 Jun 2023 899th Bmrl7 833 74 9 Jul 2023 899th Vinterion 833 74 6 Nov 2023 899th namelessiw 833 74 28 Dec 2023 899th Jonatan6 🇩🇰 833 74 15 Mar 2024 899th Mandrzejy 🇵🇱 833 74 12 Apr 2024 899th kaurakeksi 🇫🇮 833 74 29 Dec 2024 908th nwellnhof 🇩🇪 833 117 16 Nov 2022 909th Natanaelel 🇸🇪 832 39 10 Feb 2025 910th Steffan153 🇫🇮 832 55 21 Dec 2022 911th Shanethegamer 🇺🇸 832 57 15 Dec 2022 911th anter69 🇭🇺 832 57 23 Feb 2023 911th stefangimmillaro 832 57 6 May 2023 914th elisherer 🇮🇱 832 64 5 Jun 2022 914th Ashikpaul 🇮🇳 832 64 29 Jul 2022 914th LukeBridges 🇬🇧 832 64 26 Oct 2022 914th florton 832 64 18 Jan 2023 914th DayDun 🇸🇪 832 64 24 Jan 2023 914th lyphyser 832 64 3 Jun 2023 914th Davr1 🇨🇿 832 64 14 Oct 2023 914th stellartux 832 64 26 Dec 2023 914th goodwyna21 832 64 12 Nov 2024 914th xShadowBlade 832 64 26 Dec 2024 914th richard-oelze 🇩🇪 832 64 4 Aug 2025 925th MeWhenI 🇻🇦 832 101 5 May 2022 926th alphafalfa 831 65 23 Aug 2024 927th ovs-code 🇩🇪 830 60 3 Aug 2024 927th GrayJoKing 🇦🇺 830 60 24 Oct 2024 927th Shanethegamer 🇺🇸 830 60 19 Dec 2024 930th sean-niemann 🇺🇸 830 67 5 May 2022 930th pschmid0 🇺🇸 830 67 5 Aug 2022 930th arobson13 🇨🇦 830 67 11 Apr 2023 930th janbehrens 🇩🇪 830 67 17 May 2023 934th rollershutter 830 78 8 Jul 2022 934th destofr 830 78 25 Aug 2022 934th 5quiwyrm 830 78 4 Sep 2022 934th thej10n 830 78 12 Jun 2024 934th SwordF-Official 830 78 27 Apr 2025 939th msbranicky 828 100 5 Oct 2023 939th dokutan 828 100 3 Oct 2024 941st tkr-sh 🇫🇷 828 102 20 Aug 2022 941st trist224 🇫🇷 828 102 14 Dec 2022 943rd kimbo 🇺🇸 828 119 28 Dec 2022 944th GolfingSuccess 🇬🇷 828 150 18 Jan 2025 944th ovs-code 🇩🇪 828 150 27 Mar 2025 946th sean-niemann 🇺🇸 827 79 23 Oct 2024 946th DialFrost 🇸🇬 827 79 25 Oct 2024 946th emgordon154 827 79 27 Oct 2024 946th stefangimmillaro 827 79 28 Oct 2024 950th MeWhenI 🇻🇦 827 90 13 Feb 2025 951st TaserTheFox 🇺🇸 826 54 31 May 2023 952nd DialFrost 🇸🇬 826 86 15 Dec 2024 953rd trinityy-7 825 94 7 Mar 2024 953rd Squimbletin 825 94 19 Apr 2025 953rd TheZwierzLF 🇵🇱 825 94 2 Jun 2025 956th frankgraziano 824 205 21 Aug 2025 957th Bubbler-4 822 68 15 Nov 2022 957th neel11235813 822 68 31 Dec 2022 957th Rubiksmath 822 68 14 Aug 2023 957th SB-945 822 68 7 Feb 2024 961st RobertHoeh 822 70 28 Jan 2024 961st jamiloBBKing 822 70 31 Jan 2025 963rd AlephSquirrel 822 75 12 Jan 2023 963rd Yewzir 🇧🇪 822 75 22 Apr 2023 963rd Shanethegamer 🇺🇸 822 75 15 May 2023 963rd imma-Spring 822 75 15 Nov 2023 963rd noahgitsham 822 75 20 Jun 2024 963rd not-a-pokemon 822 75 13 Apr 2025 969th Shanethegamer 🇺🇸 821 52 9 Mar 2023 970th dokutan 821 79 20 Mar 2025 971st DialFrost 🇸🇬 821 86 10 Mar 2025 972nd ibeucaly 821 120 20 Sep 2022 972nd ComputerKWasTaken 🇺🇸 821 120 20 Jan 2025 974th JRaspass 🇬🇧 820 56 4 May 2022 974th ChiefChippy2 820 56 4 May 2022 Prev 901–975 of 3,322 Next