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 222nd Lydxn 🇨🇦 922 54 9 Aug 2024 222nd JayXon 🇺🇸 922 54 9 Aug 2024 228th ovs-code 🇩🇪 922 60 9 Oct 2023 228th GrayJoKing 🇦🇺 922 60 11 Oct 2023 228th Lydxn 🇨🇦 922 60 11 Oct 2023 228th GolfingSuccess 🇬🇷 922 60 16 Nov 2023 228th Steffan153 🇫🇮 922 60 28 Jan 2024 228th JayXon 🇺🇸 922 60 29 Jan 2024 228th rucin93 🇵🇱 922 60 10 Jul 2024 228th sean-niemann 🇺🇸 922 60 10 Jul 2024 236th Lydxn 🇨🇦 922 70 17 Oct 2022 236th JayXon 🇺🇸 922 70 17 Oct 2022 238th Steffan153 🇫🇮 921 67 19 Aug 2024 238th JayXon 🇺🇸 921 67 19 Aug 2024 240th Lydxn 🇨🇦 921 107 6 May 2022 240th JayXon 🇺🇸 921 107 9 May 2022 242nd Lydxn 🇨🇦 920 90 6 May 2022 242nd kumavale 920 90 21 days ago 244th sisyphus-ppcg 🇦🇺 919 50 31 Jan 2023 244th saito-ta 🇯🇵 919 50 12 Dec 2024 246th sean-niemann 🇺🇸 919 66 29 May 2025 247th uiamn 918 58 6 Sep 2022 247th 5quiwyrm 918 58 29 Sep 2022 247th alasdair-greenland 918 58 13 Jan 2023 247th kirjavascript 918 58 4 Aug 2025 247th Posandu 918 58 26 Aug 2025 247th mrxz 🇳🇱 918 58 21 days ago 253rd Herbert00709 🇵🇱 918 92 17 Nov 2023 253rd 4QT0R 918 92 23 Nov 2023 253rd ovs-code 🇩🇪 918 92 3 Jun 2024 256th primo-ppcg 🇹🇭 917 24 10 Dec 2022 257th nwellnhof 🇩🇪 916 51 4 May 2022 257th primo-ppcg 🇹🇭 916 51 6 May 2022 257th janlelis 916 51 10 May 2022 257th Natanaelel 🇸🇪 916 51 2 Jun 2022 261st Irratix 🇳🇱 916 61 7 May 2022 261st TFeld00 🇩🇰 916 61 17 May 2022 261st hallvabo 🇳🇴 916 61 4 Sep 2022 261st DialFrost 🇸🇬 916 61 19 Dec 2022 261st anter69 🇭🇺 916 61 19 Dec 2022 261st Alex-x90 🇺🇸 916 61 27 Dec 2022 261st commandblockguy 🇺🇸 916 61 22 Aug 2023 261st fgrosshans 🇫🇷 916 61 22 Jul 2024 261st duckyluuk 🇳🇱 916 61 15 Aug 2024 261st rucin93 🇵🇱 916 61 31 May 2025 261st katss2 916 61 17 Aug 2025 272nd btnlq 915 59 6 Nov 2022 273rd xnor-gate 914 63 20 Jan 2025 274th JayXon 🇺🇸 914 69 5 Apr 2023 274th Lydxn 🇨🇦 914 69 9 Apr 2023 276th MichalMarsalek 🇨🇿 914 71 5 May 2022 276th Lydxn 🇨🇦 914 71 7 May 2022 276th GrayJoKing 🇦🇺 914 71 8 May 2022 276th JayXon 🇺🇸 914 71 8 May 2022 276th Steffan153 🇫🇮 914 71 9 Mar 2023 276th Shanethegamer 🇺🇸 914 71 15 May 2023 276th MeWhenI 🇻🇦 914 71 8 Aug 2023 276th sean-niemann 🇺🇸 914 71 9 Jan 2025 284th Steffan153 🇫🇮 913 76 15 May 2023 284th primo-ppcg 🇹🇭 913 76 15 May 2023 284th Lydxn 🇨🇦 913 76 22 May 2023 284th GrayJoKing 🇦🇺 913 76 24 Aug 2023 288th arctouch-cristiannevianna 912 85 3 Apr 2023 288th Widgitty 912 85 1 Sep 2023 288th tomtheisen 🇺🇸 912 85 10 Apr 2025 291st sean-niemann 🇺🇸 912 108 25 May 2024 291st GolfingSuccess 🇬🇷 912 108 18 days ago 293rd primo-ppcg 🇹🇭 911 61 6 May 2022 293rd sisyphus-ppcg 🇦🇺 911 61 14 Jul 2022 295th Steffan153 🇫🇮 911 71 10 Dec 2022 295th synt7x 🇺🇸 911 71 7 Jul 2025 297th Bubbler-4 910 33 6 May 2022 297th rak1507 🇬🇧 910 33 8 May 2022 297th ngn 🇧🇬 910 33 11 May 2022 297th zacjl 910 33 3 Jun 2025 Prev 226–300 of 3,318 Next