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 223rd tigerdan2 🇩🇪 920 127 19 Dec 2023 227th Steffan153 🇫🇮 919 67 19 Aug 2024 227th JayXon 🇺🇸 919 67 19 Aug 2024 229th sisyphus-ppcg 🇦🇺 918 50 31 Jan 2023 229th saito-ta 🇯🇵 918 50 12 Dec 2024 231st uiamn 918 58 6 Sep 2022 231st 5quiwyrm 918 58 29 Sep 2022 231st alasdair-greenland 918 58 13 Jan 2023 234th Lydxn 🇨🇦 918 90 6 May 2022 235th Lydxn 🇨🇦 918 107 6 May 2022 235th JayXon 🇺🇸 918 107 9 May 2022 237th primo-ppcg 🇹🇭 917 24 10 Dec 2022 238th Herbert00709 🇵🇱 917 92 17 Nov 2023 238th 4QT0R 917 92 23 Nov 2023 238th ovs-code 🇩🇪 917 92 3 Jun 2024 241st Irratix 🇳🇱 915 61 7 May 2022 241st TFeld00 🇩🇰 915 61 17 May 2022 241st hallvabo 🇳🇴 915 61 4 Sep 2022 241st DialFrost 🇸🇬 915 61 19 Dec 2022 241st anter69 🇭🇺 915 61 19 Dec 2022 241st Alex-x90 🇺🇸 915 61 27 Dec 2022 241st commandblockguy 🇺🇸 915 61 22 Aug 2023 241st fgrosshans 🇫🇷 915 61 22 Jul 2024 241st duckyluuk 🇳🇱 915 61 15 Aug 2024 241st rucin93 🇵🇱 915 61 12 hours ago 251st nwellnhof 🇩🇪 914 51 4 May 2022 251st primo-ppcg 🇹🇭 914 51 6 May 2022 251st radarek 🇵🇱 914 51 8 May 2022 251st janlelis 914 51 10 May 2022 251st Natanaelel 🇸🇪 914 51 2 Jun 2022 251st sean-niemann 🇺🇸 914 51 7 Mar 2025 257th btnlq 914 59 6 Nov 2022 258th sean-niemann 🇺🇸 914 66 3 days ago 259th xnor-gate 913 63 20 Jan 2025 260th JayXon 🇺🇸 913 69 5 Apr 2023 260th Lydxn 🇨🇦 913 69 9 Apr 2023 262nd tomtheisen 🇺🇸 913 85 10 Apr 2025 263rd bac0id 913 128 29 Jun 2024 264th Steffan153 🇫🇮 912 76 15 May 2023 264th primo-ppcg 🇹🇭 912 76 15 May 2023 264th Lydxn 🇨🇦 912 76 22 May 2023 264th GrayJoKing 🇦🇺 912 76 24 Aug 2023 268th MichalMarsalek 🇨🇿 911 71 5 May 2022 268th Lydxn 🇨🇦 911 71 7 May 2022 268th GrayJoKing 🇦🇺 911 71 8 May 2022 268th JayXon 🇺🇸 911 71 8 May 2022 268th Steffan153 🇫🇮 911 71 9 Mar 2023 268th Shanethegamer 🇺🇸 911 71 15 May 2023 268th MeWhenI 🇻🇦 911 71 8 Aug 2023 268th sean-niemann 🇺🇸 911 71 9 Jan 2025 276th primo-ppcg 🇹🇭 910 61 6 May 2022 276th sisyphus-ppcg 🇦🇺 910 61 14 Jul 2022 278th Steffan153 🇫🇮 910 71 10 Dec 2022 279th sean-niemann 🇺🇸 910 108 25 May 2024 280th Bubbler-4 909 33 6 May 2022 280th rak1507 🇬🇧 909 33 8 May 2022 280th ngn 🇧🇬 909 33 11 May 2022 283rd annaproxy 909 78 13 Jan 2023 283rd IanUtley 909 78 12 Nov 2023 283rd GrayJoKing 🇦🇺 909 78 28 Nov 2023 286th Shanethegamer 🇺🇸 909 86 15 May 2023 286th JayXon 🇺🇸 909 86 15 May 2023 286th Steffan153 🇫🇮 909 86 16 May 2023 286th Lydxn 🇨🇦 909 86 16 May 2023 286th GrayJoKing 🇦🇺 909 86 11 Aug 2023 286th sean-niemann 🇺🇸 909 86 11 Jul 2024 292nd Lydxn 🇨🇦 908 47 5 May 2022 293rd Steffan153 🇫🇮 908 71 14 Oct 2022 293rd Shanethegamer 🇺🇸 908 71 15 Oct 2022 293rd stefangimmillaro 908 71 16 Oct 2022 293rd MeWhenI 🇻🇦 908 71 16 Oct 2022 297th andersk 🇺🇸 908 91 25 Oct 2022 297th Super-Pizza 🇨🇦 908 91 4 Dec 2022 297th klixel 🇨🇦 908 91 20 May 2023 297th lynn 908 91 6 Jul 2024 Prev 226–300 of 3,052 Next