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 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 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 Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 225th JayXon 🇺🇸 920 67 19 Aug 2024 227th Luca2812 920 127 12 Dec 2022 227th plastic-bottle 920 127 13 Sep 2023 227th h3ra993huskp 🇯🇵 920 127 17 Sep 2023 227th tigerdan2 🇩🇪 920 127 19 Dec 2023 231st sisyphus-ppcg 🇦🇺 918 50 31 Jan 2023 231st saito-ta 🇯🇵 918 50 12 Dec 2024 233rd uiamn 918 58 6 Sep 2022 233rd 5quiwyrm 918 58 29 Sep 2022 233rd alasdair-greenland 918 58 13 Jan 2023 236th Lydxn 🇨🇦 918 90 6 May 2022 237th Lydxn 🇨🇦 918 107 6 May 2022 237th JayXon 🇺🇸 918 107 9 May 2022 239th primo-ppcg 🇹🇭 917 24 10 Dec 2022 240th Herbert00709 🇵🇱 917 92 17 Nov 2023 240th 4QT0R 917 92 23 Nov 2023 240th ovs-code 🇩🇪 917 92 3 Jun 2024 243rd Irratix 🇳🇱 915 61 7 May 2022 243rd TFeld00 🇩🇰 915 61 17 May 2022 243rd hallvabo 🇳🇴 915 61 4 Sep 2022 243rd DialFrost 🇸🇬 915 61 19 Dec 2022 243rd anter69 🇭🇺 915 61 19 Dec 2022 243rd Alex-x90 🇺🇸 915 61 27 Dec 2022 243rd commandblockguy 🇺🇸 915 61 22 Aug 2023 243rd fgrosshans 🇫🇷 915 61 22 Jul 2024 243rd duckyluuk 🇳🇱 915 61 15 Aug 2024 243rd rucin93 🇵🇱 915 61 8 days ago 253rd nwellnhof 🇩🇪 914 51 4 May 2022 253rd primo-ppcg 🇹🇭 914 51 6 May 2022 253rd radarek 🇵🇱 914 51 8 May 2022 253rd janlelis 914 51 10 May 2022 253rd Natanaelel 🇸🇪 914 51 2 Jun 2022 253rd sean-niemann 🇺🇸 914 51 7 Mar 2025 259th btnlq 914 59 6 Nov 2022 260th sean-niemann 🇺🇸 914 66 10 days ago 261st tomtheisen 🇺🇸 914 85 10 Apr 2025 262nd xnor-gate 913 63 20 Jan 2025 263rd JayXon 🇺🇸 913 69 5 Apr 2023 263rd Lydxn 🇨🇦 913 69 9 Apr 2023 265th bac0id 913 128 29 Jun 2024 266th Steffan153 🇫🇮 912 76 15 May 2023 266th primo-ppcg 🇹🇭 912 76 15 May 2023 266th Lydxn 🇨🇦 912 76 22 May 2023 266th GrayJoKing 🇦🇺 912 76 24 Aug 2023 270th MichalMarsalek 🇨🇿 911 71 5 May 2022 270th Lydxn 🇨🇦 911 71 7 May 2022 270th GrayJoKing 🇦🇺 911 71 8 May 2022 270th JayXon 🇺🇸 911 71 8 May 2022 270th Steffan153 🇫🇮 911 71 9 Mar 2023 270th Shanethegamer 🇺🇸 911 71 15 May 2023 270th MeWhenI 🇻🇦 911 71 8 Aug 2023 270th sean-niemann 🇺🇸 911 71 9 Jan 2025 278th Bubbler-4 910 33 6 May 2022 278th rak1507 🇬🇧 910 33 8 May 2022 278th ngn 🇧🇬 910 33 11 May 2022 278th zacjl 910 33 5 days ago 278th GrayJoKing 🇦🇺 910 33 4 days ago 283rd primo-ppcg 🇹🇭 910 61 6 May 2022 283rd sisyphus-ppcg 🇦🇺 910 61 14 Jul 2022 285th Steffan153 🇫🇮 910 71 10 Dec 2022 286th sean-niemann 🇺🇸 910 108 25 May 2024 287th Steffan153 🇫🇮 909 71 14 Oct 2022 287th Shanethegamer 🇺🇸 909 71 15 Oct 2022 287th stefangimmillaro 909 71 16 Oct 2022 287th MeWhenI 🇻🇦 909 71 16 Oct 2022 291st annaproxy 909 78 13 Jan 2023 291st IanUtley 909 78 12 Nov 2023 291st GrayJoKing 🇦🇺 909 78 28 Nov 2023 294th Shanethegamer 🇺🇸 909 86 15 May 2023 294th JayXon 🇺🇸 909 86 15 May 2023 294th Steffan153 🇫🇮 909 86 16 May 2023 294th Lydxn 🇨🇦 909 86 16 May 2023 294th GrayJoKing 🇦🇺 909 86 11 Aug 2023 294th sean-niemann 🇺🇸 909 86 11 Jul 2024 300th Lydxn 🇨🇦 908 47 5 May 2022 Prev 226–300 of 3,062 Next