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 400th HumanoidCPU 0 96 166ms 2 days ago 402nd HumanoidCPU 0 97 7ms 7 hours ago 403rd Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 404th snydej 0 99 43ms 22 Nov 2024 404th albanian-laundromat 0 99 343ms 5 days ago 404th dokutan 0 99 409ms 45 hours ago 407th dokutan 0 100 19ms 45 hours ago 407th ovs-code 🇩🇪 0 100 160ms 17 hours ago 409th HumanoidCPU 0 101 361ms 34 hours ago 409th HumanoidCPU 0 101 382ms 32 hours ago 411th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 411th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 411th edsrzf 🇳🇿 0 102 295ms 9 May 2025 411th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 411th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 411th CaedenHarper 🇨🇦 0 102 301ms 5 days ago 411th fuzzylojik-golf 🇺🇸 0 102 292ms 3 days ago 411th emgordon154 0 102 274ms 2 days ago 411th edsrzf 🇳🇿 0 102 341ms 24 hours ago 411th Steffan153 🇫🇮 0 102 338ms 16 hours ago 411th Steffan153 🇫🇮 0 102 284ms 13 hours ago 422nd lukechampine 0 103 301ms 7 Jun 2025 422nd chris124567 0 103 294ms 8 Jun 2025 422nd albanian-laundromat 0 103 270ms 16 Dec 2025 422nd GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 422nd HumanoidCPU 0 103 329ms 32 hours ago 427th madex 🇩🇪 0 104 226ms 97 mins ago 428th UnderKoen 🇳🇱 0 107 2,121ms 44 hours ago 429th HumanoidCPU 0 108 13ms 8 hours ago 430th edsrzf 🇳🇿 0 109 21ms 26 hours ago 430th emgordon154 0 109 84ms 12 hours ago 432nd kg583 🇺🇸 0 110 14ms 12 Jan 2026 432nd Steffan153 🇫🇮 0 110 28ms 15 hours ago 432nd edsrzf 🇳🇿 0 110 31ms 14 hours ago 435th GolfingSuccess 🇬🇷 0 111 107ms 30 hours ago 436th retrohun 0 112 16ms 2 days ago 436th edsrzf 🇳🇿 0 112 27ms 28 hours ago 438th prestosilver 🇺🇸 0 115 418ms 2 days ago 438th HumanoidCPU 0 115 260ms 32 hours ago 440th GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 441st not-a-pokemon 0 119 15ms 41 hours ago 442nd edsrzf 🇳🇿 0 127 58ms 47 hours ago 442nd Steffan153 🇫🇮 0 127 57ms 12 hours ago 444th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 445th CaedenHarper 🇨🇦 0 129 446ms 5 days ago 446th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 446th madex 🇩🇪 0 130 412ms 115 mins ago 448th edsrzf 🇳🇿 0 134 22ms 31 hours ago 449th Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 450th albanian-laundromat 0 137 27ms 5 days ago 451st GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 452nd GolfingSuccess 🇬🇷 0 140 94ms 35 hours ago 453rd canissimia 🇦🇶 0 143 15ms 2 days ago 454th emgordon154 0 150 15ms 9 May 2025 454th albanian-laundromat 0 150 28ms 5 days ago 456th kasarino 0 157 12ms 39 hours ago 457th JOrE20 0 159 69ms 14 Feb 2026 458th emgordon154 0 162 1,822ms 28 hours ago 459th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 460th Shanethegamer 🇺🇸 0 197 1,504ms 1 Feb 2025 461st emgordon154 0 199 1,509ms 35 hours ago 462nd voytxt 🇨🇿 0 200 1,471ms 6 Feb 2026 462nd GolfingSuccess 🇬🇷 0 200 1,564ms 2 days ago 462nd HumanoidCPU 0 200 408ms 8 hours ago 465th albanian-laundromat 0 235 112ms 32 hours ago 466th ovs-code 🇩🇪 0 237 107ms 34 hours ago 467th albanian-laundromat 0 243 15ms 5 days ago 468th JOrE20 0 381 2,653ms 29 Dec 2025 469th CaedenHarper 🇨🇦 0 853 550ms 4 days ago First Prev 401–469 of 469