The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 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 201st StefanHabel 🇨🇦 0 62 15ms 2 days ago 201st Seek64 🇩🇪 0 62 15ms 2 days ago 201st blaztoma 🇱🇹 0 62 15ms 2 days ago 201st BREMAUCY 🇫🇷 0 62 16ms 2 days ago 201st Emutis 🇱🇹 0 62 16ms 2 days ago 201st Andrey2001 0 62 16ms 2 days ago 201st anter69 🇭🇺 0 62 15ms 2 days ago 201st HumanoidCPU 0 62 16ms 2 days ago 201st qpwoeirut 0 62 17ms 44 hours ago 201st stefangimmillaro 0 62 16ms 43 hours ago 201st btjones0 0 62 15ms 42 hours ago 201st bzijlema 🇳🇱 0 62 16ms 38 hours ago 201st ahmetdemirag 🇨🇾 0 62 15ms 35 hours ago 201st plcc0 0 62 15ms 35 hours ago 201st Pyroan 0 62 19ms 29 hours ago 201st edsrzf 🇳🇿 0 62 15ms 27 hours ago 201st zacjl 0 62 17ms 20 hours ago 201st MeWhenI 🇻🇦 0 62 86ms 19 hours ago 201st ComradeSquirrel 0 62 14ms 17 hours ago 201st duckyluuk 🇳🇱 0 62 15ms 11 hours ago 201st Aquateraneal 🇺🇸 0 62 15ms 49 mins ago 262nd sean-niemann 🇺🇸 0 63 43ms 8 May 2025 262nd albanian-laundromat 0 63 44ms 14 Jan 2026 262nd tomh1012 0 63 15ms 2 days ago 262nd MeWhenI 🇻🇦 0 63 204ms 28 hours ago 262nd mishak-sys 0 63 15ms 10 hours ago 267th jameswmccarty 0 64 15ms 29 Mar 2025 267th albanian-laundromat 0 64 188ms 4 days ago 267th zgialor-lab 0 64 16ms 31 hours ago 270th JDiLenarda 🇫🇷 0 65 1,347ms 34 hours ago 271st Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 271st rucin93 🇵🇱 0 66 6ms 8 May 2025 271st sean-niemann 🇺🇸 0 66 7ms 8 May 2025 271st AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 271st namelessiw 0 66 474ms 2 Nov 2025 271st GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 271st albanian-laundromat 0 66 1,345ms 4 days ago 271st Yax42 🇫🇷 0 66 484ms 3 days ago 271st fuzzylojik-golf 🇺🇸 0 66 456ms 2 days ago 271st edsrzf 🇳🇿 0 66 7ms 43 hours ago 271st edsrzf 🇳🇿 0 66 1,345ms 27 hours ago 271st edsrzf 🇳🇿 0 66 451ms 15 hours ago 271st Steffan153 🇫🇮 0 66 480ms 8 hours ago 271st Steffan153 🇫🇮 0 66 7ms 3 hours ago 285th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 285th tomh1012 0 67 429ms 2 days ago 287th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 287th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 287th edsrzf 🇳🇿 0 68 113ms 25 May 2025 287th GolfingSuccess 🇬🇷 0 68 110ms 4 days ago 287th fuzzylojik-golf 🇺🇸 0 68 1,320ms 32 hours ago 287th Steffan153 🇫🇮 0 68 104ms 8 hours ago 293rd GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 293rd CaedenHarper 🇨🇦 0 69 486ms 4 days ago 295th JOrE20 0 70 41ms 13 Feb 2026 296th kg583 🇺🇸 0 71 27ms 1 Dec 2024 296th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 296th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 296th edsrzf 🇳🇿 0 71 14ms 8 May 2025 296th AlephSquirrel 0 71 13ms 9 May 2025 301st Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 301st dokutan 0 72 62ms 8 Feb 2026 303rd GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 303rd GolfingSuccess 🇬🇷 0 73 8ms 26 hours ago 305th not-a-pokemon 0 74 15ms 32 hours ago 306th Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 306th sean-niemann 🇺🇸 0 75 103ms 8 May 2025 306th HumanoidCPU 0 75 112ms 36 hours ago 309th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 309th fuzzylojik-golf 🇺🇸 0 76 99ms 2 days ago 309th edsrzf 🇳🇿 0 76 131ms 2 days ago 309th emgordon154 0 76 115ms 43 hours ago 309th MeWhenI 🇻🇦 0 76 98ms 28 hours ago 314th rucin93 🇵🇱 0 77 130ms 8 May 2025 314th ovs-code 🇩🇪 0 77 81ms 30 May 2025 314th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 314th edsrzf 🇳🇿 0 77 7ms 28 hours ago 314th GolfingSuccess 🇬🇷 0 77 8ms 26 hours ago 314th Steffan153 🇫🇮 0 77 7ms 3 hours ago 320th saito-ta 🇯🇵 0 78 4ms 10 May 2025 First Prev 241–320 of 455 Next Last