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 235th albanian-laundromat 0 66 1,391ms 3 days ago 235th Yax42 🇫🇷 0 66 484ms 2 days ago 235th fuzzylojik-golf 🇺🇸 0 66 456ms 41 hours ago 235th edsrzf 🇳🇿 0 66 7ms 13 hours ago 245th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 245th tomh1012 0 67 429ms 30 hours ago 247th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 247th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 247th edsrzf 🇳🇿 0 68 113ms 25 May 2025 247th GolfingSuccess 🇬🇷 0 68 110ms 2 days ago 247th fuzzylojik-golf 🇺🇸 0 68 1,320ms 2 hours ago 252nd GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 252nd CaedenHarper 🇨🇦 0 69 486ms 2 days ago 254th JOrE20 0 70 41ms 13 Feb 2026 255th kg583 🇺🇸 0 71 27ms 1 Dec 2024 255th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 255th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 255th edsrzf 🇳🇿 0 71 14ms 8 May 2025 255th AlephSquirrel 0 71 13ms 9 May 2025 260th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 260th dokutan 0 72 62ms 8 Feb 2026 262nd GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 263rd not-a-pokemon 0 74 15ms 112 mins ago 264th Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 264th sean-niemann 🇺🇸 0 75 103ms 8 May 2025 264th HumanoidCPU 0 75 112ms 6 hours ago 267th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 267th fuzzylojik-golf 🇺🇸 0 76 99ms 40 hours ago 267th edsrzf 🇳🇿 0 76 131ms 32 hours ago 267th emgordon154 0 76 115ms 13 hours ago 271st rucin93 🇵🇱 0 77 130ms 8 May 2025 271st ovs-code 🇩🇪 0 77 81ms 30 May 2025 271st Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 274th saito-ta 🇯🇵 0 78 4ms 10 May 2025 274th rhdqor213 0 78 4ms 10 May 2025 274th albanian-laundromat 0 78 100ms 3 days ago 274th fuzzylojik-golf 🇺🇸 0 78 8ms 3 hours ago 278th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 279th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 280th kumavale 0 81 156ms 26 Nov 2025 280th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 280th albanian-laundromat 0 81 45ms 3 days ago 280th fuzzylojik-golf 🇺🇸 0 81 9ms 3 hours ago 284th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 284th emgordon154 0 82 159ms 14 Feb 2026 284th emgordon154 0 82 518ms 14 hours ago 287th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 287th edsrzf 🇳🇿 0 83 414ms 9 Jul 2025 287th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 287th fantaize 0 83 156ms 14 days ago 287th GolfingSuccess 🇬🇷 0 83 33ms 14 hours ago 287th MeWhenI 🇻🇦 0 83 229ms 5 hours ago 293rd Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 293rd ovs-code 🇩🇪 0 84 12ms 10 May 2025 293rd fuzzylojik-golf 🇺🇸 0 84 444ms 40 hours ago 296th edsrzf 🇳🇿 0 85 42ms 8 May 2025 296th edsrzf 🇳🇿 0 85 18ms 9 May 2025 296th error256 0 85 18ms 10 May 2025 296th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 296th KasperKivimaeki 🇫🇮 0 85 12ms 10 hours ago 301st Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 301st kg583 🇺🇸 0 86 39ms 16 Feb 2025 301st GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 301st GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 301st edsrzf 🇳🇿 0 86 155ms 9 May 2025 301st sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 301st GolfingSuccess 🇬🇷 0 86 8ms 12 Nov 2025 301st MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 301st GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 301st elgan65536 🇺🇸 0 86 168ms 24 days ago 301st CaedenHarper 🇨🇦 0 86 399ms 3 days ago 301st CaedenHarper 🇨🇦 0 86 153ms 2 days ago 301st edsrzf 🇳🇿 0 86 414ms 14 hours ago 301st edsrzf 🇳🇿 0 86 7ms 6 hours ago 301st emgordon154 0 86 406ms 74 mins ago 316th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 316th GolfingSuccess 🇬🇷 0 87 18ms 8 May 2025 316th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 316th albanian-laundromat 0 87 1,424ms 3 days ago 316th Yax42 🇫🇷 0 87 2,430ms 23 hours ago First Prev 241–320 of 387 Next Last