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 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 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 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 Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 76th GrayJoKing 🇦🇺 947 59 15 Nov 2022 77th Lydxn 🇨🇦 946 82 6 May 2022 77th JayXon 🇺🇸 946 82 9 May 2022 79th Lydxn 🇨🇦 943 51 17 Jan 2024 80th ovs-code 🇩🇪 943 61 5 Aug 2024 81st Lydxn 🇨🇦 942 59 6 May 2022 82nd JayXon 🇺🇸 940 88 17 Oct 2022 82nd acotis 940 88 9 Jun 2025 84th 2bular 938 32 17 Oct 2024 85th primo-ppcg 🇹🇭 938 49 5 May 2022 85th Lydxn 🇨🇦 938 49 8 May 2022 87th JayXon 🇺🇸 937 69 17 Oct 2022 87th Lydxn 🇨🇦 937 69 4 Feb 2023 89th Lydxn 🇨🇦 936 125 6 May 2022 89th JayXon 🇺🇸 936 125 9 May 2022 91st saito-ta 🇯🇵 934 49 13 May 2022 91st Lydxn 🇨🇦 934 49 28 May 2022 93rd canissimia 🇦🇶 934 50 5 May 2022 93rd ovs-code 🇩🇪 934 50 7 May 2022 93rd sisyphus-ppcg 🇦🇺 934 50 20 Feb 2023 93rd Steffan153 🇫🇮 934 50 20 Jul 2024 93rd sean-niemann 🇺🇸 934 50 9 Jun 2025 93rd pardouin 🇫🇷 934 50 17 days ago 99th inventshah 934 57 4 May 2022 99th itsh01 934 57 17 May 2022 99th Natanaelel 🇸🇪 934 57 16 Jun 2022 99th Attero 🇸🇪 934 57 3 Aug 2022 99th SirFireball3521 934 57 26 Jan 2023 99th Kacarott 🇦🇺 934 57 24 Mar 2023 99th nathanadams 🇳🇿 934 57 24 Apr 2023 99th hacker112 🇸🇪 934 57 20 Jun 2024 99th thisishowmymindworks 🇳🇴 934 57 28 Jun 2024 99th Salutations45 934 57 18 Nov 2024 99th daniel-cardone 934 57 3 Jul 2025 110th Irratix 🇳🇱 934 83 4 May 2022 110th nwellnhof 🇩🇪 934 83 4 May 2022 110th ScottHamper 934 83 5 May 2022 110th Romain-1 🇫🇷 934 83 1 Jun 2022 110th Gaddy 🇫🇷 934 83 1 Jun 2022 110th 5quiwyrm 934 83 4 Sep 2022 110th Betuaredead 934 83 5 Jan 2023 110th Yewzir 🇧🇪 934 83 12 Feb 2023 110th btnlq 934 83 9 Mar 2023 110th Adix-null 🇱🇹 934 83 17 May 2023 110th Matgc04 934 83 19 May 2023 110th AdrienHache 🇫🇷 934 83 8 Jun 2023 110th gblikas 934 83 23 Jul 2023 110th KrausRaus 🇺🇸 934 83 31 Jul 2023 110th namelessiw 934 83 9 Apr 2025 110th dokutan 934 83 9 Apr 2025 110th m-tkach 🇺🇦 934 83 10 Apr 2025 110th DialFrost 🇸🇬 934 83 10 Apr 2025 110th Pecanolith 934 83 19 Apr 2025 110th Tyrant7 934 83 19 Apr 2025 110th Yax42 🇫🇷 934 83 19 Apr 2025 110th MeWhenI 🇻🇦 934 83 19 Jun 2025 110th sean-niemann 🇺🇸 934 83 20 Jun 2025 110th stefangimmillaro 934 83 20 Jun 2025 110th tomh1012 934 83 11 days ago 110th fuzzylojik-golf 🇺🇸 934 83 14 hours ago 136th ovs-code 🇩🇪 931 60 4 May 2022 136th m-tkach 🇺🇦 931 60 4 May 2022 136th btnlq 931 60 5 May 2022 136th orthoplex 🇨🇽 931 60 9 Oct 2022 136th FlorianCassayre 🇫🇷 931 60 7 Nov 2022 136th SirBogman 🇺🇸 931 60 20 Nov 2022 136th QuincyNash 🇺🇸 931 60 1 Dec 2022 136th Steffan153 🇫🇮 931 60 19 Dec 2022 136th SirFireball3521 931 60 26 Jan 2023 136th Shanethegamer 🇺🇸 931 60 25 May 2023 136th CornerMercury 🇬🇧 931 60 19 Jun 2023 136th ndren 931 60 2 Aug 2023 136th kg583 🇺🇸 931 60 14 Aug 2023 136th Just4FunCoder 931 60 17 Feb 2024 136th HumanoidCPU 931 60 6 May 2024 Prev 76–150 of 3,301 Next