The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 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 321st GolfingSuccess 🇬🇷 0 88 5ms 12 Nov 2025 321st kg583 🇺🇸 0 88 23ms 12 Feb 2026 321st fuzzylojik-golf 🇺🇸 0 88 152ms 38 hours ago 324th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 324th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 324th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 324th CaedenHarper 🇨🇦 0 89 103ms 2 days ago 328th Yax42 🇫🇷 0 90 13ms 23 hours ago 329th GolfingSuccess 🇬🇷 0 91 14ms 13 Dec 2025 330th namelessiw 0 92 504ms 10 Oct 2025 330th fuzzylojik-golf 🇺🇸 0 92 390ms 39 hours ago 330th madex 🇩🇪 0 92 12ms 18 hours ago 333rd CaedenHarper 🇨🇦 0 93 13ms 3 days ago 334th DialFrost 🇸🇬 0 94 13ms 10 May 2025 334th edsrzf 🇳🇿 0 94 187ms 17 May 2025 336th Yax42 🇫🇷 0 95 389ms 22 hours ago 337th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 337th HumanoidCPU 0 96 160ms 16 hours ago 339th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 340th snydej 0 99 43ms 22 Nov 2024 340th albanian-laundromat 0 99 343ms 3 days ago 340th dokutan 0 99 409ms 4 hours ago 343rd dokutan 0 100 19ms 4 hours ago 344th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 344th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 344th edsrzf 🇳🇿 0 102 295ms 9 May 2025 344th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 344th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 344th CaedenHarper 🇨🇦 0 102 301ms 3 days ago 344th fuzzylojik-golf 🇺🇸 0 102 292ms 39 hours ago 344th emgordon154 0 102 274ms 10 hours ago 352nd lukechampine 0 103 301ms 7 Jun 2025 352nd chris124567 0 103 294ms 8 Jun 2025 352nd albanian-laundromat 0 103 270ms 16 Dec 2025 352nd GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 356th edsrzf 🇳🇿 0 104 17ms 22 hours ago 357th UnderKoen 🇳🇱 0 107 2,121ms 3 hours ago 358th kg583 🇺🇸 0 110 14ms 12 Jan 2026 358th HumanoidCPU 0 110 363ms 4 hours ago 360th retrohun 0 112 16ms 27 hours ago 361st prestosilver 🇺🇸 0 115 418ms 25 hours ago 362nd GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 363rd GolfingSuccess 🇬🇷 0 118 94ms 10 hours ago 364th emgordon154 0 119 56ms 12 hours ago 364th not-a-pokemon 0 119 15ms 79 mins ago 366th edsrzf 🇳🇿 0 123 30ms 17 hours ago 367th edsrzf 🇳🇿 0 127 58ms 6 hours ago 368th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 369th CaedenHarper 🇨🇦 0 129 446ms 3 days ago 370th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 371st Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 372nd albanian-laundromat 0 137 27ms 3 days ago 373rd GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 374th canissimia 🇦🇶 0 143 15ms 10 hours ago 375th emgordon154 0 150 15ms 9 May 2025 375th albanian-laundromat 0 150 28ms 3 days ago 377th GolfingSuccess 🇬🇷 0 152 84ms 4 days ago 378th JOrE20 0 159 69ms 14 Feb 2026 379th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 380th Shanethegamer 🇺🇸 0 197 1,442ms 1 Feb 2025 381st voytxt 🇨🇿 0 200 1,425ms 6 Feb 2026 381st GolfingSuccess 🇬🇷 0 200 1,407ms 13 hours ago 381st emgordon154 0 200 1,683ms 2 hours ago 384th albanian-laundromat 0 243 15ms 3 days ago 385th albanian-laundromat 0 256 115ms 2 days ago 386th JOrE20 0 381 2,653ms 29 Dec 2025 387th CaedenHarper 🇨🇦 0 853 550ms 2 days ago First Prev 321–387 of 387
