The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 44 hours. 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 217th 5cw 🇺🇸 0 62 15ms 22 Aug 2025 217th commandz0 🇺🇸 0 62 15ms 27 Aug 2025 217th SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 217th KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 217th albanian-laundromat 0 62 16ms 2 Dec 2025 217th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 217th Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 217th lukegustafson 🇺🇸 0 62 36ms 20 days ago 217th aksyristos 0 62 14ms 18 days ago 217th madex 🇩🇪 0 62 15ms 10 days ago 217th CaedenHarper 🇨🇦 0 62 16ms 8 days ago 217th KatieLG 🇬🇧 0 62 16ms 6 days ago 217th KatieLG 🇬🇧 0 62 416ms 6 days ago 217th scpchicken 🇵🇼 0 62 15ms 6 days ago 217th fuzzylojik-golf 🇺🇸 0 62 15ms 6 days ago 217th StefanHabel 🇨🇦 0 62 15ms 5 days ago 217th Seek64 🇩🇪 0 62 15ms 5 days ago 217th blaztoma 🇱🇹 0 62 15ms 5 days ago 217th BREMAUCY 🇫🇷 0 62 16ms 5 days ago 217th Emutis 🇱🇹 0 62 16ms 5 days ago 217th Andrey2001 0 62 16ms 5 days ago 217th anter69 🇭🇺 0 62 15ms 5 days ago 217th HumanoidCPU 0 62 16ms 5 days ago 217th qpwoeirut 0 62 17ms 4 days ago 217th stefangimmillaro 0 62 16ms 4 days ago 217th btjones0 0 62 15ms 4 days ago 217th bzijlema 🇳🇱 0 62 16ms 4 days ago 217th ahmetdemirag 🇨🇾 0 62 15ms 4 days ago 217th plcc0 0 62 15ms 4 days ago 217th Pyroan 0 62 19ms 4 days ago 217th edsrzf 🇳🇿 0 62 15ms 4 days ago 217th zacjl 0 62 17ms 3 days ago 217th MeWhenI 🇻🇦 0 62 86ms 3 days ago 217th ComradeSquirrel 0 62 14ms 3 days ago 217th duckyluuk 🇳🇱 0 62 15ms 3 days ago 217th Aquateraneal 🇺🇸 0 62 15ms 3 days ago 217th madex 🇩🇪 0 62 439ms 2 days ago 217th madex 🇩🇪 0 62 1,125ms 2 days ago 217th luuumine 🇫🇷 0 62 19ms 2 days ago 217th solisolu 0 62 15ms 30 hours ago 217th LostSyntax21 🇬🇧 0 62 16ms 14 hours ago 282nd sean-niemann 🇺🇸 0 63 43ms 8 May 2025 282nd albanian-laundromat 0 63 44ms 14 Jan 2026 282nd tomh1012 0 63 15ms 5 days ago 282nd mishak-sys 0 63 15ms 3 days ago 286th jameswmccarty 0 64 15ms 29 Mar 2025 286th albanian-laundromat 0 64 188ms 8 days ago 286th zgialor-lab 0 64 16ms 4 days ago 289th JDiLenarda 🇫🇷 0 65 1,347ms 4 days ago 290th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 290th rucin93 🇵🇱 0 66 6ms 8 May 2025 290th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 290th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 290th namelessiw 0 66 474ms 2 Nov 2025 290th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 290th albanian-laundromat 0 66 1,345ms 7 days ago 290th Yax42 🇫🇷 0 66 461ms 6 days ago 290th fuzzylojik-golf 🇺🇸 0 66 456ms 6 days ago 290th edsrzf 🇳🇿 0 66 7ms 4 days ago 290th edsrzf 🇳🇿 0 66 1,345ms 4 days ago 290th edsrzf 🇳🇿 0 66 451ms 3 days ago 290th Steffan153 🇫🇮 0 66 480ms 3 days ago 290th Steffan153 🇫🇮 0 66 7ms 3 days ago 290th AstroOrbis 0 66 15ms 11 hours ago 305th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 305th tomh1012 0 67 429ms 5 days ago 305th msbranicky 0 67 16ms 2 days ago 308th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 308th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 308th edsrzf 🇳🇿 0 68 113ms 25 May 2025 308th GolfingSuccess 🇬🇷 0 68 110ms 7 days ago 308th fuzzylojik-golf 🇺🇸 0 68 1,320ms 4 days ago 308th Steffan153 🇫🇮 0 68 104ms 3 days ago 314th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 314th CaedenHarper 🇨🇦 0 69 486ms 7 days ago 314th MeWhenI 🇻🇦 0 69 454ms 2 days ago 317th JOrE20 0 70 41ms 13 Feb 2026 318th kg583 🇺🇸 0 71 27ms 1 Dec 2024 318th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 318th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 First Prev 241–320 of 506 Next Last