The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 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 241st GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 241st emgordon154 0 82 162ms 14 Feb 2026 243rd Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 243rd edsrzf 🇳🇿 0 83 414ms 9 Jul 2025 243rd Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 243rd fantaize 0 83 156ms 13 days ago 247th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 247th ovs-code 🇩🇪 0 84 12ms 10 May 2025 247th fuzzylojik-golf 🇺🇸 0 84 444ms 9 hours ago 250th GolfingSuccess 🇬🇷 0 85 46ms 8 May 2025 250th edsrzf 🇳🇿 0 85 42ms 8 May 2025 250th edsrzf 🇳🇿 0 85 18ms 9 May 2025 250th error256 0 85 18ms 10 May 2025 250th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 255th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 255th kg583 🇺🇸 0 86 39ms 16 Feb 2025 255th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 255th GolfingSuccess 🇬🇷 0 86 2,431ms 8 May 2025 255th edsrzf 🇳🇿 0 86 155ms 9 May 2025 255th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 255th GolfingSuccess 🇬🇷 0 86 8ms 12 Nov 2025 255th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 255th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 255th elgan65536 🇺🇸 0 86 168ms 23 days ago 255th CaedenHarper 🇨🇦 0 86 399ms 2 days ago 255th CaedenHarper 🇨🇦 0 86 153ms 33 hours ago 267th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 267th GolfingSuccess 🇬🇷 0 87 18ms 8 May 2025 267th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 267th albanian-laundromat 0 87 1,424ms 2 days ago 271st GolfingSuccess 🇬🇷 0 88 6ms 12 Nov 2025 271st kg583 🇺🇸 0 88 23ms 12 Feb 2026 271st fuzzylojik-golf 🇺🇸 0 88 152ms 6 hours ago 274th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 274th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 274th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 274th CaedenHarper 🇨🇦 0 89 103ms 33 hours ago 278th KasperKivimaeki 🇫🇮 0 91 13ms 8 May 2025 278th GolfingSuccess 🇬🇷 0 91 14ms 13 Dec 2025 280th namelessiw 0 92 504ms 10 Oct 2025 280th fuzzylojik-golf 🇺🇸 0 92 390ms 7 hours ago 282nd CaedenHarper 🇨🇦 0 93 13ms 2 days ago 283rd DialFrost 🇸🇬 0 94 13ms 10 May 2025 283rd edsrzf 🇳🇿 0 94 187ms 17 May 2025 285th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 286th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 287th snydej 0 99 43ms 22 Nov 2024 287th albanian-laundromat 0 99 343ms 2 days ago 289th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 289th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 289th edsrzf 🇳🇿 0 102 295ms 9 May 2025 289th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 289th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 289th CaedenHarper 🇨🇦 0 102 301ms 2 days ago 289th fuzzylojik-golf 🇺🇸 0 102 292ms 8 hours ago 296th lukechampine 0 103 301ms 7 Jun 2025 296th chris124567 0 103 294ms 8 Jun 2025 296th albanian-laundromat 0 103 294ms 16 Dec 2025 296th GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 300th kg583 🇺🇸 0 110 14ms 12 Jan 2026 301st edsrzf 🇳🇿 0 114 18ms 10 May 2025 302nd GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 303rd saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 304th CaedenHarper 🇨🇦 0 129 455ms 2 days ago 305th Natanaelel 🇸🇪 0 130 335ms 2 May 2025 306th Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 307th albanian-laundromat 0 137 27ms 2 days ago 308th GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 309th emgordon154 0 150 15ms 9 May 2025 309th albanian-laundromat 0 150 28ms 2 days ago 311th GolfingSuccess 🇬🇷 0 152 84ms 3 days ago 312th JOrE20 0 159 69ms 14 Feb 2026 313th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 314th Shanethegamer 🇺🇸 0 197 1,442ms 1 Feb 2025 315th voytxt 🇨🇿 0 200 1,425ms 6 Feb 2026 316th GolfingSuccess 🇬🇷 0 219 1,452ms 13 Dec 2025 317th albanian-laundromat 0 243 15ms 2 days ago 318th albanian-laundromat 0 256 117ms 20 hours ago 319th JOrE20 0 381 2,673ms 29 Dec 2025 320th CaedenHarper 🇨🇦 0 853 550ms 35 hours ago First Prev 241–320 of 320