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 320th HumanoidCPU 0 96 160ms 9 hours ago 322nd Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 323rd snydej 0 99 43ms 22 Nov 2024 323rd albanian-laundromat 0 99 343ms 3 days ago 325th dokutan 0 100 370ms 16 hours ago 326th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 326th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 326th edsrzf 🇳🇿 0 102 295ms 9 May 2025 326th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 326th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 326th CaedenHarper 🇨🇦 0 102 301ms 3 days ago 326th fuzzylojik-golf 🇺🇸 0 102 292ms 33 hours ago 326th emgordon154 0 102 274ms 4 hours ago 334th lukechampine 0 103 301ms 7 Jun 2025 334th chris124567 0 103 294ms 8 Jun 2025 334th albanian-laundromat 0 103 270ms 16 Dec 2025 334th GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 338th edsrzf 🇳🇿 0 104 17ms 16 hours ago 339th kg583 🇺🇸 0 110 14ms 12 Jan 2026 340th retrohun 0 112 16ms 20 hours ago 341st prestosilver 🇺🇸 0 115 418ms 19 hours ago 342nd GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 343rd GolfingSuccess 🇬🇷 0 118 94ms 4 hours ago 344th emgordon154 0 119 56ms 5 hours ago 345th edsrzf 🇳🇿 0 123 30ms 10 hours ago 346th edsrzf 🇳🇿 0 127 58ms 6 mins ago 347th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 348th CaedenHarper 🇨🇦 0 129 446ms 3 days ago 349th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 350th Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 351st albanian-laundromat 0 137 27ms 3 days ago 352nd GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 353rd canissimia 🇦🇶 0 143 15ms 4 hours ago 354th emgordon154 0 150 15ms 9 May 2025 354th albanian-laundromat 0 150 28ms 3 days ago 356th GolfingSuccess 🇬🇷 0 152 84ms 4 days ago 357th JOrE20 0 159 69ms 14 Feb 2026 358th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 359th Shanethegamer 🇺🇸 0 197 1,442ms 1 Feb 2025 360th voytxt 🇨🇿 0 200 1,425ms 6 Feb 2026 360th GolfingSuccess 🇬🇷 0 200 1,407ms 7 hours ago 362nd emgordon154 0 202 1,464ms 5 hours ago 363rd albanian-laundromat 0 243 15ms 3 days ago 364th albanian-laundromat 0 256 115ms 44 hours ago 365th JOrE20 0 381 2,653ms 29 Dec 2025 366th CaedenHarper 🇨🇦 0 853 550ms 2 days ago First Prev 321–366 of 366