The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 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 214th KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 214th albanian-laundromat 0 62 16ms 2 Dec 2025 214th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 214th Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 214th lukegustafson 🇺🇸 0 62 36ms 19 days ago 214th aksyristos 0 62 14ms 16 days ago 214th madex 🇩🇪 0 62 15ms 8 days ago 214th CaedenHarper 🇨🇦 0 62 16ms 6 days ago 214th KatieLG 🇬🇧 0 62 16ms 4 days ago 214th KatieLG 🇬🇧 0 62 416ms 4 days ago 214th scpchicken 🇵🇼 0 62 15ms 4 days ago 214th fuzzylojik-golf 🇺🇸 0 62 15ms 4 days ago 214th StefanHabel 🇨🇦 0 62 15ms 4 days ago 214th Seek64 🇩🇪 0 62 15ms 4 days ago 214th blaztoma 🇱🇹 0 62 15ms 4 days ago 214th BREMAUCY 🇫🇷 0 62 16ms 4 days ago 214th Emutis 🇱🇹 0 62 16ms 4 days ago 214th Andrey2001 0 62 16ms 4 days ago 214th anter69 🇭🇺 0 62 15ms 3 days ago 214th HumanoidCPU 0 62 16ms 3 days ago 214th qpwoeirut 0 62 17ms 3 days ago 214th stefangimmillaro 0 62 16ms 3 days ago 214th btjones0 0 62 15ms 3 days ago 214th bzijlema 🇳🇱 0 62 16ms 3 days ago 214th ahmetdemirag 🇨🇾 0 62 15ms 3 days ago 214th plcc0 0 62 15ms 3 days ago 214th Pyroan 0 62 19ms 2 days ago 214th edsrzf 🇳🇿 0 62 15ms 2 days ago 214th zacjl 0 62 17ms 2 days ago 214th MeWhenI 🇻🇦 0 62 86ms 2 days ago 214th ComradeSquirrel 0 62 14ms 2 days ago 214th duckyluuk 🇳🇱 0 62 15ms 2 days ago 214th Aquateraneal 🇺🇸 0 62 15ms 40 hours ago 214th madex 🇩🇪 0 62 439ms 32 hours ago 214th madex 🇩🇪 0 62 1,125ms 32 hours ago 214th luuumine 🇫🇷 0 62 19ms 26 hours ago 277th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 277th albanian-laundromat 0 63 44ms 14 Jan 2026 277th tomh1012 0 63 15ms 4 days ago 277th mishak-sys 0 63 15ms 2 days ago 281st jameswmccarty 0 64 15ms 29 Mar 2025 281st albanian-laundromat 0 64 188ms 6 days ago 281st zgialor-lab 0 64 16ms 2 days ago 284th JDiLenarda 🇫🇷 0 65 1,347ms 3 days ago 285th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 285th rucin93 🇵🇱 0 66 6ms 8 May 2025 285th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 285th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 285th namelessiw 0 66 474ms 2 Nov 2025 285th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 285th albanian-laundromat 0 66 1,345ms 6 days ago 285th Yax42 🇫🇷 0 66 461ms 5 days ago 285th fuzzylojik-golf 🇺🇸 0 66 456ms 4 days ago 285th edsrzf 🇳🇿 0 66 7ms 3 days ago 285th edsrzf 🇳🇿 0 66 1,345ms 2 days ago 285th edsrzf 🇳🇿 0 66 451ms 2 days ago 285th Steffan153 🇫🇮 0 66 480ms 2 days ago 285th Steffan153 🇫🇮 0 66 7ms 43 hours ago 299th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 299th tomh1012 0 67 429ms 4 days ago 299th msbranicky 0 67 16ms 28 hours ago 302nd Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 302nd sean-niemann 🇺🇸 0 68 131ms 8 May 2025 302nd edsrzf 🇳🇿 0 68 113ms 25 May 2025 302nd GolfingSuccess 🇬🇷 0 68 110ms 5 days ago 302nd fuzzylojik-golf 🇺🇸 0 68 1,320ms 3 days ago 302nd Steffan153 🇫🇮 0 68 104ms 2 days ago 308th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 308th CaedenHarper 🇨🇦 0 69 486ms 5 days ago 308th MeWhenI 🇻🇦 0 69 454ms 29 hours ago 311th JOrE20 0 70 41ms 13 Feb 2026 312th kg583 🇺🇸 0 71 27ms 1 Dec 2024 312th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 312th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 312th edsrzf 🇳🇿 0 71 14ms 8 May 2025 312th AlephSquirrel 0 71 13ms 9 May 2025 317th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 317th dokutan 0 72 62ms 8 Feb 2026 319th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 319th GolfingSuccess 🇬🇷 0 73 8ms 2 days ago First Prev 241–320 of 485 Next Last