The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
Gray Code Encoder 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 JDiLenarda 🇫🇷 0 65 1,378ms 9 hours ago 242nd Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 242nd rucin93 🇵🇱 0 66 6ms 8 May 2025 242nd sean-niemann 🇺🇸 0 66 7ms 8 May 2025 242nd AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 242nd namelessiw 0 66 434ms 2 Nov 2025 242nd GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 242nd albanian-laundromat 0 66 1,391ms 3 days ago 242nd Yax42 🇫🇷 0 66 484ms 2 days ago 242nd fuzzylojik-golf 🇺🇸 0 66 456ms 46 hours ago 242nd edsrzf 🇳🇿 0 66 7ms 18 hours ago 242nd edsrzf 🇳🇿 0 66 1,345ms 2 hours ago 253rd GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 253rd tomh1012 0 67 429ms 35 hours ago 255th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 255th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 255th edsrzf 🇳🇿 0 68 113ms 25 May 2025 255th GolfingSuccess 🇬🇷 0 68 110ms 2 days ago 255th fuzzylojik-golf 🇺🇸 0 68 1,320ms 7 hours ago 260th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 260th CaedenHarper 🇨🇦 0 69 486ms 3 days ago 262nd JOrE20 0 70 41ms 13 Feb 2026 263rd kg583 🇺🇸 0 71 27ms 1 Dec 2024 263rd CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 263rd GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 263rd edsrzf 🇳🇿 0 71 14ms 8 May 2025 263rd AlephSquirrel 0 71 13ms 9 May 2025 268th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 268th dokutan 0 72 62ms 8 Feb 2026 270th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 270th GolfingSuccess 🇬🇷 0 73 8ms 2 hours ago 272nd not-a-pokemon 0 74 15ms 7 hours ago 273rd Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 273rd sean-niemann 🇺🇸 0 75 103ms 8 May 2025 273rd HumanoidCPU 0 75 112ms 11 hours ago 276th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 276th fuzzylojik-golf 🇺🇸 0 76 99ms 46 hours ago 276th edsrzf 🇳🇿 0 76 131ms 37 hours ago 276th emgordon154 0 76 115ms 18 hours ago 276th MeWhenI 🇻🇦 0 76 98ms 3 hours ago 281st rucin93 🇵🇱 0 77 130ms 8 May 2025 281st ovs-code 🇩🇪 0 77 81ms 30 May 2025 281st Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 281st edsrzf 🇳🇿 0 77 7ms 3 hours ago 281st GolfingSuccess 🇬🇷 0 77 8ms 2 hours ago 286th saito-ta 🇯🇵 0 78 4ms 10 May 2025 286th rhdqor213 0 78 4ms 10 May 2025 286th albanian-laundromat 0 78 100ms 3 days ago 286th fuzzylojik-golf 🇺🇸 0 78 8ms 8 hours ago 286th edsrzf 🇳🇿 0 78 425ms 2 hours ago 291st GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 292nd sean-niemann 🇺🇸 0 80 455ms 8 May 2025 293rd kumavale 0 81 156ms 26 Nov 2025 293rd Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 293rd albanian-laundromat 0 81 45ms 3 days ago 293rd fuzzylojik-golf 🇺🇸 0 81 9ms 9 hours ago 297th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 297th emgordon154 0 82 159ms 14 Feb 2026 297th emgordon154 0 82 518ms 20 hours ago 300th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 300th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 300th fantaize 0 83 156ms 15 days ago 300th GolfingSuccess 🇬🇷 0 83 33ms 20 hours ago 300th MeWhenI 🇻🇦 0 83 229ms 11 hours ago 305th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 305th ovs-code 🇩🇪 0 84 12ms 10 May 2025 305th fuzzylojik-golf 🇺🇸 0 84 444ms 46 hours ago 305th KasperKivimaeki 🇫🇮 0 84 12ms 5 hours ago 309th edsrzf 🇳🇿 0 85 42ms 8 May 2025 309th edsrzf 🇳🇿 0 85 18ms 9 May 2025 309th error256 0 85 18ms 10 May 2025 309th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 313th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 313th kg583 🇺🇸 0 86 39ms 16 Feb 2025 313th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 313th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 313th edsrzf 🇳🇿 0 86 155ms 9 May 2025 313th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 313th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 313th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 First Prev 241–320 of 400 Next Last