The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 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 401st HumanoidCPU 0 97 7ms 6 hours ago 402nd Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 403rd snydej 0 99 43ms 22 Nov 2024 403rd albanian-laundromat 0 99 343ms 5 days ago 403rd dokutan 0 99 409ms 43 hours ago 406th dokutan 0 100 19ms 43 hours ago 406th ovs-code 🇩🇪 0 100 160ms 15 hours ago 408th HumanoidCPU 0 101 361ms 33 hours ago 408th HumanoidCPU 0 101 382ms 31 hours ago 410th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 410th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 410th edsrzf 🇳🇿 0 102 295ms 9 May 2025 410th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 410th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 410th CaedenHarper 🇨🇦 0 102 301ms 5 days ago 410th fuzzylojik-golf 🇺🇸 0 102 292ms 3 days ago 410th emgordon154 0 102 274ms 2 days ago 410th edsrzf 🇳🇿 0 102 341ms 22 hours ago 410th Steffan153 🇫🇮 0 102 338ms 15 hours ago 410th Steffan153 🇫🇮 0 102 284ms 11 hours ago 421st lukechampine 0 103 301ms 7 Jun 2025 421st chris124567 0 103 294ms 8 Jun 2025 421st albanian-laundromat 0 103 270ms 16 Dec 2025 421st GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 421st HumanoidCPU 0 103 329ms 30 hours ago 426th UnderKoen 🇳🇱 0 107 2,121ms 42 hours ago 427th HumanoidCPU 0 108 13ms 6 hours ago 428th edsrzf 🇳🇿 0 109 21ms 24 hours ago 428th emgordon154 0 109 84ms 11 hours ago 430th kg583 🇺🇸 0 110 14ms 12 Jan 2026 430th Steffan153 🇫🇮 0 110 28ms 13 hours ago 430th edsrzf 🇳🇿 0 110 31ms 12 hours ago 433rd GolfingSuccess 🇬🇷 0 111 107ms 29 hours ago 434th retrohun 0 112 16ms 2 days ago 434th edsrzf 🇳🇿 0 112 27ms 26 hours ago 436th prestosilver 🇺🇸 0 115 418ms 2 days ago 436th HumanoidCPU 0 115 260ms 30 hours ago 438th GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 439th not-a-pokemon 0 119 15ms 39 hours ago 440th edsrzf 🇳🇿 0 127 58ms 45 hours ago 440th Steffan153 🇫🇮 0 127 57ms 11 hours ago 442nd saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 443rd CaedenHarper 🇨🇦 0 129 446ms 5 days ago 444th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 444th madex 🇩🇪 0 130 412ms 12 mins ago 446th edsrzf 🇳🇿 0 134 22ms 29 hours ago 447th Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 448th albanian-laundromat 0 137 27ms 5 days ago 449th GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 450th GolfingSuccess 🇬🇷 0 140 94ms 34 hours ago 451st canissimia 🇦🇶 0 143 15ms 2 days ago 452nd emgordon154 0 150 15ms 9 May 2025 452nd albanian-laundromat 0 150 28ms 5 days ago 454th kasarino 0 157 12ms 37 hours ago 455th JOrE20 0 159 69ms 14 Feb 2026 456th emgordon154 0 162 1,822ms 27 hours ago 457th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 458th Shanethegamer 🇺🇸 0 197 1,504ms 1 Feb 2025 459th emgordon154 0 199 1,509ms 33 hours ago 460th voytxt 🇨🇿 0 200 1,471ms 6 Feb 2026 460th GolfingSuccess 🇬🇷 0 200 1,564ms 2 days ago 460th HumanoidCPU 0 200 408ms 6 hours ago 463rd albanian-laundromat 0 235 112ms 30 hours ago 464th ovs-code 🇩🇪 0 237 107ms 33 hours ago 465th albanian-laundromat 0 243 15ms 5 days ago 466th JOrE20 0 381 2,653ms 29 Dec 2025 467th CaedenHarper 🇨🇦 0 853 550ms 4 days ago First Prev 401–467 of 467
