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 fuzzylojik-golf 🇺🇸 0 92 383ms 3 days ago 400th madex 🇩🇪 0 92 12ms 2 days ago 403rd CaedenHarper 🇨🇦 0 93 13ms 5 days ago 404th DialFrost 🇸🇬 0 94 13ms 10 May 2025 404th edsrzf 🇳🇿 0 94 187ms 17 May 2025 404th edsrzf 🇳🇿 0 94 21ms 46 hours ago 407th Yax42 🇫🇷 0 95 389ms 2 days ago 408th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 408th HumanoidCPU 0 96 166ms 2 days ago 410th HumanoidCPU 0 97 7ms 16 hours ago 411th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 412th snydej 0 99 43ms 22 Nov 2024 412th albanian-laundromat 0 99 343ms 5 days ago 412th dokutan 0 99 409ms 2 days ago 412th dokutan 0 99 12ms 7 hours ago 416th dokutan 0 100 19ms 2 days ago 416th ovs-code 🇩🇪 0 100 160ms 25 hours ago 418th HumanoidCPU 0 101 361ms 43 hours ago 418th HumanoidCPU 0 101 382ms 41 hours ago 420th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 420th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 420th edsrzf 🇳🇿 0 102 295ms 9 May 2025 420th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 420th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 420th CaedenHarper 🇨🇦 0 102 301ms 5 days ago 420th fuzzylojik-golf 🇺🇸 0 102 292ms 3 days ago 420th emgordon154 0 102 274ms 2 days ago 420th edsrzf 🇳🇿 0 102 341ms 32 hours ago 420th Steffan153 🇫🇮 0 102 338ms 25 hours ago 420th Steffan153 🇫🇮 0 102 284ms 21 hours ago 420th MeWhenI 🇻🇦 0 102 287ms 8 hours ago 432nd lukechampine 0 103 301ms 7 Jun 2025 432nd chris124567 0 103 294ms 8 Jun 2025 432nd albanian-laundromat 0 103 270ms 16 Dec 2025 432nd GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 432nd HumanoidCPU 0 103 329ms 41 hours ago 437th madex 🇩🇪 0 104 226ms 10 hours ago 438th UnderKoen 🇳🇱 0 107 2,121ms 2 days ago 439th HumanoidCPU 0 108 13ms 17 hours ago 440th edsrzf 🇳🇿 0 109 21ms 35 hours ago 440th emgordon154 0 109 84ms 21 hours ago 442nd kg583 🇺🇸 0 110 14ms 12 Jan 2026 442nd Steffan153 🇫🇮 0 110 28ms 24 hours ago 442nd edsrzf 🇳🇿 0 110 31ms 23 hours ago 445th GolfingSuccess 🇬🇷 0 111 107ms 39 hours ago 446th retrohun 0 112 16ms 3 days ago 446th edsrzf 🇳🇿 0 112 27ms 37 hours ago 448th prestosilver 🇺🇸 0 115 418ms 3 days ago 448th HumanoidCPU 0 115 260ms 40 hours ago 450th GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 451st not-a-pokemon 0 119 15ms 2 days ago 452nd edsrzf 🇳🇿 0 127 58ms 2 days ago 452nd Steffan153 🇫🇮 0 127 57ms 21 hours ago 454th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 455th CaedenHarper 🇨🇦 0 129 446ms 5 days ago 456th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 456th madex 🇩🇪 0 130 412ms 10 hours ago 458th edsrzf 🇳🇿 0 134 22ms 40 hours ago 459th GolfingSuccess 🇬🇷 0 135 80ms 6 hours ago 460th Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 461st albanian-laundromat 0 137 27ms 5 days ago 462nd GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 463rd dokutan 0 141 287ms 7 hours ago 464th canissimia 🇦🇶 0 143 15ms 2 days ago 465th emgordon154 0 150 15ms 9 May 2025 465th albanian-laundromat 0 150 28ms 5 days ago 467th kasarino 0 157 12ms 2 days ago 468th dokutan 0 158 74ms 7 hours ago 469th JOrE20 0 159 69ms 14 Feb 2026 470th emgordon154 0 162 1,822ms 37 hours ago 471st RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 472nd Shanethegamer 🇺🇸 0 197 1,504ms 1 Feb 2025 473rd emgordon154 0 199 1,509ms 43 hours ago 474th voytxt 🇨🇿 0 200 1,471ms 6 Feb 2026 474th GolfingSuccess 🇬🇷 0 200 1,564ms 2 days ago 474th HumanoidCPU 0 200 408ms 17 hours ago 477th albanian-laundromat 0 235 112ms 40 hours ago 478th ovs-code 🇩🇪 0 237 107ms 43 hours ago 479th albanian-laundromat 0 243 15ms 5 days ago 480th JOrE20 0 381 2,653ms 29 Dec 2025 First Prev 401–480 of 481 Next Last