The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Fizz Buzz in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 712th GrayJoKing 🇦🇺 963 43 3ms 14 Aug 2024 712th btnlq 963 43 3ms 14 Aug 2024 712th ovs-code 🇩🇪 963 43 4ms 15 Aug 2024 712th pardouin 🇫🇷 963 43 4ms 17 Aug 2024 712th SirBogman 🇺🇸 963 43 3ms 19 Aug 2024 712th snoozingnewt 🇨🇦 963 43 4ms 10 Oct 2024 712th sean-niemann 🇺🇸 963 43 3ms 11 Oct 2024 712th lynn 963 43 3ms 18 Dec 2024 712th weeble 963 43 3ms 20 Dec 2024 712th emgordon154 963 43 3ms 12 May 2025 731st primo-ppcg 🇹🇭 963 46 34ms 3 Jan 2020 731st Steffan153 🇫🇮 963 46 36ms 11 days ago 733rd JayXon 🇺🇸 963 108 281ms 12 Aug 2023 733rd kkoenig 963 108 322ms 4 Jan 2024 733rd Lydxn 🇨🇦 963 108 281ms 5 Jan 2024 733rd nwellnhof 🇩🇪 963 108 301ms 5 Aug 2024 737th saito-ta 🇯🇵 962 38 5ms 12 Jul 2024 738th MeWhenI 🇻🇦 962 54 5ms 7 Mar 2024 739th scpchicken 🇵🇼 962 57 5ms 3 Jul 2023 739th eclyptox 962 57 4ms 4 Oct 2024 739th trijin 962 57 5ms 4 Oct 2024 739th prohalexey 962 57 5ms 5 Oct 2024 739th chachanagov 962 57 5ms 10 Oct 2024 739th Lv0Sys 🇵🇱 962 57 5ms 28 Nov 2025 745th Lydxn 🇨🇦 961 52 448ms 16 Jan 2024 745th JayXon 🇺🇸 961 52 413ms 18 Jan 2024 745th orthoplex 🇨🇽 961 52 417ms 24 Jan 2024 745th kg583 🇺🇸 961 52 411ms 20 Feb 2024 745th xsot 🇸🇬 961 52 413ms 17 Jun 2024 745th pardouin 🇫🇷 961 52 394ms 12 Jul 2024 745th sean-niemann 🇺🇸 961 52 433ms 27 Jun 2025 745th b-illy 🇬🇧 961 52 456ms 7 Jul 2025 745th fuzzylojik-golf 🇺🇸 961 52 411ms 1 Sep 2025 745th Steffan153 🇫🇮 961 52 345ms 26 Feb 2026 755th Lydxn 🇨🇦 961 61 126ms 8 Oct 2021 755th JayXon 🇺🇸 961 61 127ms 8 Oct 2021 757th Lydxn 🇨🇦 960 95 464ms 2 Jan 2022 757th lowkey42 960 95 482ms 3 Jan 2022 757th Alex-x90 🇺🇸 960 95 457ms 9 Jun 2022 757th solmyr2000 960 95 448ms 19 Jun 2022 757th Steffan153 🇫🇮 960 95 443ms 21 Sep 2022 757th qwertyuiop3 🇷🇺 960 95 445ms 21 Oct 2022 757th syntax-rules 960 95 444ms 8 Jan 2023 757th inventshah 960 95 447ms 26 Jan 2023 757th xsot 🇸🇬 960 95 432ms 21 May 2023 757th southpolenator 960 95 434ms 10 Jun 2023 757th ognen98 960 95 462ms 10 Jun 2023 757th byronknoll 🇺🇸 960 95 442ms 17 Jan 2024 757th ovs-code 🇩🇪 960 95 464ms 9 Jun 2024 757th pardouin 🇫🇷 960 95 424ms 10 Oct 2024 757th sean-niemann 🇺🇸 960 95 415ms 5 Feb 2025 757th KasperKivimaeki 🇫🇮 960 95 456ms 7 Apr 2025 773rd Attero 🇸🇪 959 40 113ms 8 Apr 2020 773rd Indivicivet 959 40 103ms 22 Mar 2021 773rd scpchicken 🇵🇼 959 40 101ms 24 Mar 2022 776th Lydxn 🇨🇦 959 56 2ms 30 Oct 2022 776th btnlq 959 56 1ms 5 Nov 2022 776th clockworknazo 959 56 1ms 6 Nov 2022 776th primo-ppcg 🇹🇭 959 56 2ms 7 Nov 2022 776th Steffan153 🇫🇮 959 56 1ms 24 Nov 2022 776th sisyphus-ppcg 🇦🇺 959 56 1ms 24 Feb 2023 776th xsot 🇸🇬 959 56 1ms 22 May 2023 776th fe1inae 959 56 1ms 27 Jun 2023 776th Yewzir 🇧🇪 959 56 1ms 21 Jul 2023 776th sean-niemann 🇺🇸 959 56 1ms 10 Oct 2023 776th fuzzylojik-golf 🇺🇸 959 56 2ms 8 Nov 2023 776th Betuaredead 959 56 1ms 12 Nov 2023 776th canissimia 🇦🇶 959 56 1ms 13 Dec 2025 789th lharck 🇺🇸 957 68 1ms 6 Feb 2021 789th sisyphus-ppcg 🇦🇺 957 68 1ms 14 Oct 2022 789th stillnotdone 957 68 1ms 9 Feb 2023 789th xsot 🇸🇬 957 68 1ms 2 Feb 2024 789th JayXon 🇺🇸 957 68 1ms 17 Jul 2024 794th ntsd 🇹🇭 956 55 10ms 20 Oct 2019 794th andersk 🇺🇸 956 55 10ms 26 Mar 2020 794th Attero 🇸🇪 956 55 10ms 25 Sep 2020 794th KatieLG 🇬🇧 956 55 10ms 8 Nov 2020 794th rak1507 🇬🇧 956 55 10ms 31 Dec 2020 794th Espiobest 956 55 10ms 26 Feb 2021 794th vezzick 956 55 12ms 11 Mar 2021 First Prev 721–800 of 13,387 Next Last