The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Gray Code Decoder 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 238th Natanaelel 🇸🇪 0 77 3ms 11 May 2025 238th addmai 0 77 20ms 24 Jul 2025 238th hiichbindermax 0 77 17ms 17 Aug 2025 238th 5cw 🇺🇸 0 77 18ms 22 Aug 2025 238th davecame 0 77 135ms 25 Sep 2025 238th SirBogman 🇺🇸 0 77 232ms 13 Oct 2025 238th jtaxen 0 77 19ms 16 Oct 2025 238th albanian-laundromat 0 77 19ms 25 Nov 2025 238th albanian-laundromat 0 77 412ms 6 Dec 2025 238th anter69 🇭🇺 0 77 139ms 4 Feb 2026 238th Matter1024 🇮🇳 0 77 17ms 12 Feb 2026 238th KasperKivimaeki 🇫🇮 0 77 564ms 13 days ago 238th StefanHabel 🇨🇦 0 77 1,217ms 5 days ago 238th ahmetdemirag 🇨🇾 0 77 18ms 5 days ago 238th tomh1012 0 77 17ms 5 days ago 238th HumanoidCPU 0 77 230ms 4 days ago 238th qpwoeirut 0 77 20ms 4 days ago 238th btjones0 0 77 19ms 4 days ago 238th ComradeSquirrel 0 77 18ms 4 days ago 238th bzijlema 🇳🇱 0 77 18ms 4 days ago 238th Lv0Sys 🇵🇱 0 77 18ms 3 days ago 238th stefangimmillaro 0 77 136ms 18 hours ago 238th LostSyntax21 🇬🇧 0 77 18ms 8 hours ago 264th jameswmccarty 0 78 19ms 29 Mar 2025 264th DialFrost 🇸🇬 0 78 3ms 10 May 2025 264th solisolu 0 78 20ms 10 Nov 2025 264th madex 🇩🇪 0 78 3ms 2 days ago 264th madex 🇩🇪 0 78 91ms 27 hours ago 269th BREMAUCY 🇫🇷 0 79 18ms 5 days ago 269th Andrey2001 0 79 18ms 5 days ago 269th edsrzf 🇳🇿 0 79 30ms 4 days ago 269th mishak-sys 0 79 411ms 3 days ago 269th madex 🇩🇪 0 79 29ms 27 hours ago 274th Shanethegamer 🇺🇸 0 80 5ms 3 Jun 2025 274th error256 0 80 466ms 16 Jan 2026 274th albanian-laundromat 0 80 29ms 4 days ago 277th Shanethegamer 🇺🇸 0 81 348ms 3 Jun 2025 277th Lv0Sys 🇵🇱 0 81 437ms 3 days ago 277th Aquateraneal 🇺🇸 0 81 19ms 2 days ago 277th luuumine 🇫🇷 0 81 16ms 2 days ago 277th acollett89 0 81 14ms 2 days ago 277th KatieLG 🇬🇧 0 81 67ms 8 hours ago 283rd bricknellj 0 82 17ms 30 Jan 2025 283rd dokutan 0 82 17ms 15 Aug 2025 283rd scpchicken 🇵🇼 0 82 402ms 5 days ago 283rd KatieLG 🇬🇧 0 82 18ms 5 days ago 283rd MeWhenI 🇻🇦 0 82 105ms 3 days ago 283rd solisolu 0 82 4ms 3 days ago 283rd MeWhenI 🇻🇦 0 82 391ms 44 hours ago 290th GolfingSuccess 🇬🇷 0 83 114ms 12 Jan 2026 290th GolfingSuccess 🇬🇷 0 83 386ms 12 Jan 2026 290th error256 0 83 430ms 12 Jan 2026 290th albanian-laundromat 0 83 9ms 26 Jan 2026 290th edsrzf 🇳🇿 0 83 473ms 4 days ago 290th edsrzf 🇳🇿 0 83 1,251ms 4 days ago 290th edsrzf 🇳🇿 0 83 106ms 3 days ago 290th Steffan153 🇫🇮 0 83 416ms 3 days ago 290th msbranicky 0 83 18ms 2 days ago 299th madex 🇩🇪 0 84 373ms 23 hours ago 300th Shanethegamer 🇺🇸 0 85 6ms 13 Dec 2024 300th edsrzf 🇳🇿 0 85 1,065ms 25 May 2025 300th albanian-laundromat 0 85 98ms 6 Dec 2025 300th GolfingSuccess 🇬🇷 0 85 25ms 14 Jan 2026 300th edsrzf 🇳🇿 0 85 28ms 4 days ago 305th kg583 🇺🇸 0 86 23ms 2 Oct 2025 305th GolfingSuccess 🇬🇷 0 86 2,109ms 20 days ago 307th sean-niemann 🇺🇸 0 87 42ms 9 May 2025 307th CaedenHarper 🇨🇦 0 87 439ms 4 days ago 307th madex 🇩🇪 0 87 13ms 2 days ago 310th muser-logiccpu 🇺🇦 0 88 72ms 2 Sep 2025 310th albanian-laundromat 0 88 1,372ms 5 Jan 2026 310th error256 0 88 3,067ms 14 Jan 2026 310th IanUtley 0 88 2,941ms 16 Jan 2026 314th Shanethegamer 🇺🇸 0 89 107ms 13 Dec 2024 314th GolfingSuccess 🇬🇷 0 89 64ms 12 Jan 2026 316th sean-niemann 🇺🇸 0 90 7ms 10 May 2025 316th dokutan 0 90 65ms 8 Feb 2026 318th ovs-code 🇩🇪 0 91 261ms 13 Dec 2025 318th error256 0 91 62ms 12 Jan 2026 318th error256 0 91 293ms 14 Jan 2026 First Prev 241–320 of 406 Next Last