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 CaedenHarper 🇨🇦 0 93 13ms 5 days ago 402nd DialFrost 🇸🇬 0 94 13ms 10 May 2025 402nd edsrzf 🇳🇿 0 94 187ms 17 May 2025 402nd edsrzf 🇳🇿 0 94 21ms 43 hours ago 405th Yax42 🇫🇷 0 95 389ms 2 days ago 406th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 406th HumanoidCPU 0 96 166ms 2 days ago 408th HumanoidCPU 0 97 7ms 13 hours ago 409th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 410th snydej 0 99 43ms 22 Nov 2024 410th albanian-laundromat 0 99 343ms 5 days ago 410th dokutan 0 99 409ms 2 days ago 410th dokutan 0 99 12ms 4 hours ago 414th dokutan 0 100 19ms 2 days ago 414th ovs-code 🇩🇪 0 100 160ms 22 hours ago 416th HumanoidCPU 0 101 361ms 40 hours ago 416th HumanoidCPU 0 101 382ms 38 hours ago 418th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 418th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 418th edsrzf 🇳🇿 0 102 295ms 9 May 2025 418th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 418th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 418th CaedenHarper 🇨🇦 0 102 301ms 5 days ago 418th fuzzylojik-golf 🇺🇸 0 102 292ms 3 days ago 418th emgordon154 0 102 274ms 2 days ago 418th edsrzf 🇳🇿 0 102 341ms 29 hours ago 418th Steffan153 🇫🇮 0 102 338ms 22 hours ago 418th Steffan153 🇫🇮 0 102 284ms 18 hours ago 418th MeWhenI 🇻🇦 0 102 287ms 5 hours ago 430th lukechampine 0 103 301ms 7 Jun 2025 430th chris124567 0 103 294ms 8 Jun 2025 430th albanian-laundromat 0 103 270ms 16 Dec 2025 430th GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 430th HumanoidCPU 0 103 329ms 37 hours ago 435th madex 🇩🇪 0 104 226ms 7 hours ago 436th UnderKoen 🇳🇱 0 107 2,121ms 2 days ago 437th HumanoidCPU 0 108 13ms 14 hours ago 438th edsrzf 🇳🇿 0 109 21ms 32 hours ago 438th emgordon154 0 109 84ms 18 hours ago 440th kg583 🇺🇸 0 110 14ms 12 Jan 2026 440th Steffan153 🇫🇮 0 110 28ms 21 hours ago 440th edsrzf 🇳🇿 0 110 31ms 20 hours ago 443rd GolfingSuccess 🇬🇷 0 111 107ms 36 hours ago 444th retrohun 0 112 16ms 3 days ago 444th edsrzf 🇳🇿 0 112 27ms 33 hours ago 446th prestosilver 🇺🇸 0 115 418ms 2 days ago 446th HumanoidCPU 0 115 260ms 37 hours ago 448th GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 449th not-a-pokemon 0 119 15ms 47 hours ago 450th edsrzf 🇳🇿 0 127 58ms 2 days ago 450th Steffan153 🇫🇮 0 127 57ms 18 hours ago 452nd saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 453rd CaedenHarper 🇨🇦 0 129 446ms 5 days ago 454th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 454th madex 🇩🇪 0 130 412ms 7 hours ago 456th edsrzf 🇳🇿 0 134 22ms 36 hours ago 457th GolfingSuccess 🇬🇷 0 135 80ms 2 hours ago 458th Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 459th albanian-laundromat 0 137 27ms 5 days ago 460th GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 461st dokutan 0 141 287ms 4 hours ago 462nd canissimia 🇦🇶 0 143 15ms 2 days ago 463rd emgordon154 0 150 15ms 9 May 2025 463rd albanian-laundromat 0 150 28ms 5 days ago 465th kasarino 0 157 12ms 45 hours ago 466th dokutan 0 158 74ms 4 hours ago 467th JOrE20 0 159 69ms 14 Feb 2026 468th emgordon154 0 162 1,822ms 34 hours ago 469th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 470th Shanethegamer 🇺🇸 0 197 1,504ms 1 Feb 2025 471st emgordon154 0 199 1,509ms 40 hours ago 472nd voytxt 🇨🇿 0 200 1,471ms 6 Feb 2026 472nd GolfingSuccess 🇬🇷 0 200 1,564ms 2 days ago 472nd HumanoidCPU 0 200 408ms 14 hours ago 475th albanian-laundromat 0 235 112ms 37 hours ago 476th ovs-code 🇩🇪 0 237 107ms 40 hours ago 477th albanian-laundromat 0 243 15ms 5 days ago 478th JOrE20 0 381 2,653ms 29 Dec 2025 479th CaedenHarper 🇨🇦 0 853 550ms 4 days ago First Prev 401–479 of 479