The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 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 213th albanian-laundromat 0 62 16ms 2 Dec 2025 213th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 213th Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 213th lukegustafson 🇺🇸 0 62 36ms 19 days ago 213th aksyristos 0 62 14ms 16 days ago 213th madex 🇩🇪 0 62 15ms 8 days ago 213th CaedenHarper 🇨🇦 0 62 16ms 6 days ago 213th KatieLG 🇬🇧 0 62 16ms 4 days ago 213th KatieLG 🇬🇧 0 62 416ms 4 days ago 213th scpchicken 🇵🇼 0 62 15ms 4 days ago 213th fuzzylojik-golf 🇺🇸 0 62 15ms 4 days ago 213th StefanHabel 🇨🇦 0 62 15ms 4 days ago 213th Seek64 🇩🇪 0 62 15ms 4 days ago 213th blaztoma 🇱🇹 0 62 15ms 4 days ago 213th BREMAUCY 🇫🇷 0 62 16ms 3 days ago 213th Emutis 🇱🇹 0 62 16ms 3 days ago 213th Andrey2001 0 62 16ms 3 days ago 213th anter69 🇭🇺 0 62 15ms 3 days ago 213th HumanoidCPU 0 62 16ms 3 days ago 213th qpwoeirut 0 62 17ms 3 days ago 213th stefangimmillaro 0 62 16ms 3 days ago 213th btjones0 0 62 15ms 3 days ago 213th bzijlema 🇳🇱 0 62 16ms 2 days ago 213th ahmetdemirag 🇨🇾 0 62 15ms 2 days ago 213th plcc0 0 62 15ms 2 days ago 213th Pyroan 0 62 19ms 2 days ago 213th edsrzf 🇳🇿 0 62 15ms 2 days ago 213th zacjl 0 62 17ms 2 days ago 213th MeWhenI 🇻🇦 0 62 86ms 2 days ago 213th ComradeSquirrel 0 62 14ms 2 days ago 213th duckyluuk 🇳🇱 0 62 15ms 44 hours ago 213th Aquateraneal 🇺🇸 0 62 15ms 33 hours ago 213th madex 🇩🇪 0 62 439ms 25 hours ago 213th madex 🇩🇪 0 62 1,125ms 25 hours ago 213th luuumine 🇫🇷 0 62 19ms 19 hours ago 276th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 276th albanian-laundromat 0 63 44ms 14 Jan 2026 276th tomh1012 0 63 15ms 3 days ago 276th mishak-sys 0 63 15ms 43 hours ago 280th jameswmccarty 0 64 15ms 29 Mar 2025 280th albanian-laundromat 0 64 188ms 6 days ago 280th zgialor-lab 0 64 16ms 2 days ago 283rd JDiLenarda 🇫🇷 0 65 1,347ms 2 days ago 284th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 284th rucin93 🇵🇱 0 66 6ms 8 May 2025 284th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 284th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 284th namelessiw 0 66 474ms 2 Nov 2025 284th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 284th albanian-laundromat 0 66 1,345ms 6 days ago 284th Yax42 🇫🇷 0 66 461ms 4 days ago 284th fuzzylojik-golf 🇺🇸 0 66 456ms 4 days ago 284th edsrzf 🇳🇿 0 66 7ms 3 days ago 284th edsrzf 🇳🇿 0 66 1,345ms 2 days ago 284th edsrzf 🇳🇿 0 66 451ms 2 days ago 284th Steffan153 🇫🇮 0 66 480ms 41 hours ago 284th Steffan153 🇫🇮 0 66 7ms 36 hours ago 298th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 298th tomh1012 0 67 429ms 3 days ago 298th msbranicky 0 67 16ms 21 hours ago 301st Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 301st sean-niemann 🇺🇸 0 68 131ms 8 May 2025 301st edsrzf 🇳🇿 0 68 113ms 25 May 2025 301st GolfingSuccess 🇬🇷 0 68 110ms 5 days ago 301st fuzzylojik-golf 🇺🇸 0 68 1,320ms 2 days ago 301st Steffan153 🇫🇮 0 68 104ms 41 hours ago 307th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 307th CaedenHarper 🇨🇦 0 69 486ms 5 days ago 307th MeWhenI 🇻🇦 0 69 454ms 22 hours ago 310th JOrE20 0 70 41ms 13 Feb 2026 311th kg583 🇺🇸 0 71 27ms 1 Dec 2024 311th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 311th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 311th edsrzf 🇳🇿 0 71 14ms 8 May 2025 311th AlephSquirrel 0 71 13ms 9 May 2025 316th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 316th dokutan 0 72 62ms 8 Feb 2026 318th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 318th GolfingSuccess 🇬🇷 0 73 8ms 2 days ago 320th not-a-pokemon 0 74 15ms 2 days ago First Prev 241–320 of 484 Next Last