The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 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 183rd ComradeSquirrel 0 62 14ms 15 mins ago 242nd sean-niemann 🇺🇸 0 63 43ms 8 May 2025 242nd albanian-laundromat 0 63 44ms 14 Jan 2026 242nd tomh1012 0 63 15ms 43 hours ago 242nd MeWhenI 🇻🇦 0 63 204ms 11 hours ago 246th jameswmccarty 0 64 15ms 29 Mar 2025 246th albanian-laundromat 0 64 188ms 4 days ago 246th zgialor-lab 0 64 16ms 13 hours ago 249th JDiLenarda 🇫🇷 0 65 1,378ms 16 hours ago 250th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 250th rucin93 🇵🇱 0 66 6ms 8 May 2025 250th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 250th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 250th namelessiw 0 66 434ms 2 Nov 2025 250th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 250th albanian-laundromat 0 66 1,391ms 4 days ago 250th Yax42 🇫🇷 0 66 484ms 2 days ago 250th fuzzylojik-golf 🇺🇸 0 66 456ms 2 days ago 250th edsrzf 🇳🇿 0 66 7ms 26 hours ago 250th edsrzf 🇳🇿 0 66 1,345ms 9 hours ago 261st GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 261st tomh1012 0 67 429ms 43 hours ago 263rd Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 263rd sean-niemann 🇺🇸 0 68 131ms 8 May 2025 263rd edsrzf 🇳🇿 0 68 113ms 25 May 2025 263rd GolfingSuccess 🇬🇷 0 68 110ms 3 days ago 263rd fuzzylojik-golf 🇺🇸 0 68 1,320ms 15 hours ago 268th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 268th CaedenHarper 🇨🇦 0 69 486ms 3 days ago 270th JOrE20 0 70 41ms 13 Feb 2026 271st kg583 🇺🇸 0 71 27ms 1 Dec 2024 271st CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 271st GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 271st edsrzf 🇳🇿 0 71 14ms 8 May 2025 271st AlephSquirrel 0 71 13ms 9 May 2025 276th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 276th dokutan 0 72 62ms 8 Feb 2026 278th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 278th GolfingSuccess 🇬🇷 0 73 8ms 9 hours ago 280th not-a-pokemon 0 74 15ms 14 hours ago 281st Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 281st sean-niemann 🇺🇸 0 75 103ms 8 May 2025 281st HumanoidCPU 0 75 112ms 19 hours ago 284th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 284th fuzzylojik-golf 🇺🇸 0 76 99ms 2 days ago 284th edsrzf 🇳🇿 0 76 131ms 45 hours ago 284th emgordon154 0 76 115ms 26 hours ago 284th MeWhenI 🇻🇦 0 76 98ms 11 hours ago 289th rucin93 🇵🇱 0 77 130ms 8 May 2025 289th ovs-code 🇩🇪 0 77 81ms 30 May 2025 289th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 289th edsrzf 🇳🇿 0 77 7ms 11 hours ago 289th GolfingSuccess 🇬🇷 0 77 8ms 9 hours ago 294th saito-ta 🇯🇵 0 78 4ms 10 May 2025 294th rhdqor213 0 78 4ms 10 May 2025 294th albanian-laundromat 0 78 93ms 4 days ago 294th fuzzylojik-golf 🇺🇸 0 78 8ms 16 hours ago 294th edsrzf 🇳🇿 0 78 425ms 9 hours ago 299th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 300th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 301st kumavale 0 81 156ms 26 Nov 2025 301st Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 301st albanian-laundromat 0 81 45ms 4 days ago 301st fuzzylojik-golf 🇺🇸 0 81 9ms 16 hours ago 301st stefangimmillaro 0 81 46ms 3 hours ago 306th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 306th emgordon154 0 82 159ms 14 Feb 2026 306th emgordon154 0 82 454ms 27 hours ago 306th edsrzf 🇳🇿 0 82 161ms 5 hours ago 310th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 310th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 310th fantaize 0 83 156ms 15 days ago 310th GolfingSuccess 🇬🇷 0 83 33ms 27 hours ago 310th MeWhenI 🇻🇦 0 83 229ms 18 hours ago 315th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 315th ovs-code 🇩🇪 0 84 12ms 10 May 2025 315th fuzzylojik-golf 🇺🇸 0 84 444ms 2 days ago 315th KasperKivimaeki 🇫🇮 0 84 12ms 12 hours ago 319th edsrzf 🇳🇿 0 85 42ms 8 May 2025 319th edsrzf 🇳🇿 0 85 18ms 9 May 2025 First Prev 241–320 of 417 Next Last