The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 90 mins. Why not try and solve them ahead of time?
Foo Fizz Buzz Bar in all languages in bytes. 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 Bytes Time Submitted 241st primo-ppcg 🇹🇭 979 47 34ms 22 Nov 2021 241st HPWiz 🇳🇿 979 47 35ms 20 Jan 2022 241st ovs-code 🇩🇪 979 47 34ms 27 Jun 2024 244th emgordon154 975 49 52ms 11 Nov 2025 244th ovs-code 🇩🇪 975 49 55ms 11 Nov 2025 246th Jaydosu 975 84 10ms 3 Dec 2021 246th bwat2 975 84 13ms 14 Dec 2021 246th Altrul 975 84 12ms 4 Feb 2022 246th dzybine 975 84 11ms 28 Feb 2022 246th Drew-j-Smith 975 84 11ms 28 Mar 2022 246th Jaca1878 975 84 11ms 13 May 2022 246th TrentGlimp 975 84 10ms 3 Sep 2022 246th NoahBolohan 🇨🇦 975 84 11ms 1 Feb 2023 246th DragonaireM 975 84 12ms 7 Feb 2023 246th Hortaros 975 84 11ms 15 Apr 2023 246th celiendonze 🇨🇭 975 84 11ms 28 Apr 2023 246th cgringmuth 975 84 11ms 29 Jun 2023 246th thienudomsrirungruang 975 84 11ms 4 Apr 2024 246th NanduBC 975 84 11ms 6 Sep 2024 246th Vexxter9 🇳🇱 975 84 12ms 25 Sep 2024 246th agreegious 975 84 11ms 17 Nov 2024 246th Natanaelel 🇸🇪 975 84 11ms 21 Jan 2025 246th Emutis 🇱🇹 975 84 12ms 32 mins ago 264th primo-ppcg 🇹🇭 974 62 6ms 22 Nov 2021 264th sisyphus-ppcg 🇦🇺 974 62 4ms 28 Mar 2022 264th Lydxn 🇨🇦 974 62 4ms 20 Aug 2022 264th saito-ta 🇯🇵 974 62 6ms 9 Aug 2024 264th fuzzylojik-golf 🇺🇸 974 62 6ms 12 Jun 2025 269th Lydxn 🇨🇦 971 72 267ms 21 Nov 2021 269th primo-ppcg 🇹🇭 971 72 245ms 22 Nov 2021 269th btnlq 971 72 266ms 22 Nov 2021 269th sisyphus-ppcg 🇦🇺 971 72 275ms 12 Feb 2022 269th Feniske 🇫🇷 971 72 293ms 25 Aug 2022 269th JoshFurtado 971 72 270ms 25 Apr 2023 269th sean-niemann 🇺🇸 971 72 271ms 9 Aug 2023 269th nwellnhof 🇩🇪 971 72 253ms 20 Aug 2023 269th MaxCastella 🇫🇷 971 72 278ms 13 Oct 2023 269th stefangimmillaro 971 72 267ms 19 Oct 2023 269th juliansiebert 🇩🇪 971 72 290ms 11 Dec 2023 269th JayXon 🇺🇸 971 72 290ms 26 Jan 2024 269th SirBogman 🇺🇸 971 72 264ms 3 Feb 2024 269th Steffan153 🇫🇮 971 72 295ms 9 Aug 2024 269th BREMAUCY 🇫🇷 971 72 276ms 27 Aug 2024 269th pardouin 🇫🇷 971 72 265ms 29 Sep 2024 269th DialFrost 🇸🇬 971 72 299ms 24 Dec 2024 269th FortuiteMan 🇫🇷 971 72 287ms 12 Jul 2025 269th bitsandbeyond 🇳🇱 971 72 310ms 4 Oct 2025 269th fuzzylojik-golf 🇺🇸 971 72 290ms 30 hours ago 289th JayXon 🇺🇸 968 80 11ms 23 Nov 2021 290th dvargas46 🇺🇸 967 67 126ms 16 Jul 2022 291st KL-Lru 965 77 37ms 29 Dec 2022 291st radarek 🇵🇱 965 77 54ms 20 Nov 2024 293rd fuzzylojik-golf 🇺🇸 964 96 420ms 27 May 2025 293rd AdrienHache 🇫🇷 964 96 475ms 14 Aug 2025 295th AshGriffiths 963 85 37ms 7 Aug 2022 295th fredrik-bakke 🇳🇴 963 85 41ms 3 Nov 2022 295th aeonsablaze 963 85 11ms 22 Nov 2022 295th oceko 963 85 36ms 24 Mar 2023 295th Griff95 963 85 38ms 19 Sep 2023 295th anarconic 963 85 36ms 6 Dec 2023 295th christensendaniel 963 85 39ms 15 May 2024 302nd JRaspass 🇬🇧 962 84 12ms 2 Jul 2023 302nd GrayJoKing 🇦🇺 962 84 11ms 2 Jul 2023 302nd sisyphus-ppcg 🇦🇺 962 84 11ms 2 Jul 2023 302nd janbehrens 🇩🇪 962 84 11ms 2 Jul 2023 302nd rucin93 🇵🇱 962 84 11ms 2 Jul 2023 302nd SirBogman 🇺🇸 962 84 11ms 2 Jul 2023 302nd Shanethegamer 🇺🇸 962 84 11ms 2 Jul 2023 302nd emplv 🇱🇻 962 84 11ms 2 Jul 2023 302nd sean-niemann 🇺🇸 962 84 10ms 2 Jul 2023 302nd stefangimmillaro 962 84 10ms 2 Jul 2023 302nd Lydxn 🇨🇦 962 84 11ms 2 Jul 2023 302nd Steffan153 🇫🇮 962 84 10ms 2 Jul 2023 302nd JayXon 🇺🇸 962 84 11ms 3 Jul 2023 302nd primo-ppcg 🇹🇭 962 84 10ms 3 Jul 2023 302nd Attero 🇸🇪 962 84 11ms 25 Sep 2023 302nd ocefra 962 84 11ms 2 Oct 2023 302nd DialFrost 🇸🇬 962 84 10ms 21 Oct 2023 302nd KrausRaus 🇺🇸 962 84 11ms 21 Oct 2023 302nd xsot 🇸🇬 962 84 11ms 7 Apr 2024 First Prev 241–320 of 3,484 Next Last