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 212th Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 212th Steffan153 🇫🇮 0 62 16ms 19 Feb 2026 212th lukegustafson 🇺🇸 0 62 36ms 18 days ago 212th aksyristos 0 62 14ms 15 days ago 212th madex 🇩🇪 0 62 15ms 8 days ago 212th CaedenHarper 🇨🇦 0 62 16ms 6 days ago 212th KatieLG 🇬🇧 0 62 16ms 3 days ago 212th KatieLG 🇬🇧 0 62 416ms 3 days ago 212th scpchicken 🇵🇼 0 62 15ms 3 days ago 212th fuzzylojik-golf 🇺🇸 0 62 15ms 3 days ago 212th StefanHabel 🇨🇦 0 62 15ms 3 days ago 212th Seek64 🇩🇪 0 62 15ms 3 days ago 212th blaztoma 🇱🇹 0 62 15ms 3 days ago 212th BREMAUCY 🇫🇷 0 62 16ms 3 days ago 212th Emutis 🇱🇹 0 62 16ms 3 days ago 212th Andrey2001 0 62 16ms 3 days ago 212th anter69 🇭🇺 0 62 15ms 3 days ago 212th HumanoidCPU 0 62 16ms 2 days ago 212th qpwoeirut 0 62 17ms 2 days ago 212th stefangimmillaro 0 62 16ms 2 days ago 212th btjones0 0 62 15ms 2 days ago 212th bzijlema 🇳🇱 0 62 16ms 2 days ago 212th ahmetdemirag 🇨🇾 0 62 15ms 2 days ago 212th plcc0 0 62 15ms 2 days ago 212th Pyroan 0 62 19ms 2 days ago 212th edsrzf 🇳🇿 0 62 15ms 47 hours ago 212th zacjl 0 62 17ms 40 hours ago 212th MeWhenI 🇻🇦 0 62 86ms 39 hours ago 212th ComradeSquirrel 0 62 14ms 37 hours ago 212th duckyluuk 🇳🇱 0 62 15ms 31 hours ago 212th Aquateraneal 🇺🇸 0 62 15ms 20 hours ago 212th madex 🇩🇪 0 62 439ms 12 hours ago 212th madex 🇩🇪 0 62 1,125ms 12 hours ago 212th luuumine 🇫🇷 0 62 19ms 6 hours ago 275th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 275th albanian-laundromat 0 63 44ms 14 Jan 2026 275th tomh1012 0 63 15ms 3 days ago 275th mishak-sys 0 63 15ms 30 hours ago 279th jameswmccarty 0 64 15ms 29 Mar 2025 279th albanian-laundromat 0 64 188ms 5 days ago 279th zgialor-lab 0 64 16ms 2 days ago 282nd JDiLenarda 🇫🇷 0 65 1,347ms 2 days ago 283rd Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 283rd rucin93 🇵🇱 0 66 6ms 8 May 2025 283rd sean-niemann 🇺🇸 0 66 7ms 8 May 2025 283rd AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 283rd namelessiw 0 66 474ms 2 Nov 2025 283rd GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 283rd albanian-laundromat 0 66 1,345ms 5 days ago 283rd Yax42 🇫🇷 0 66 461ms 4 days ago 283rd fuzzylojik-golf 🇺🇸 0 66 456ms 3 days ago 283rd edsrzf 🇳🇿 0 66 7ms 2 days ago 283rd edsrzf 🇳🇿 0 66 1,345ms 47 hours ago 283rd edsrzf 🇳🇿 0 66 451ms 35 hours ago 283rd Steffan153 🇫🇮 0 66 480ms 28 hours ago 283rd Steffan153 🇫🇮 0 66 7ms 23 hours ago 297th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 297th tomh1012 0 67 429ms 3 days ago 297th msbranicky 0 67 16ms 9 hours ago 300th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 300th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 300th edsrzf 🇳🇿 0 68 113ms 25 May 2025 300th GolfingSuccess 🇬🇷 0 68 110ms 4 days ago 300th fuzzylojik-golf 🇺🇸 0 68 1,320ms 2 days ago 300th Steffan153 🇫🇮 0 68 104ms 28 hours ago 306th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 306th CaedenHarper 🇨🇦 0 69 486ms 4 days ago 306th MeWhenI 🇻🇦 0 69 454ms 10 hours ago 309th JOrE20 0 70 41ms 13 Feb 2026 310th kg583 🇺🇸 0 71 27ms 1 Dec 2024 310th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 310th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 310th edsrzf 🇳🇿 0 71 14ms 8 May 2025 310th AlephSquirrel 0 71 13ms 9 May 2025 315th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 315th dokutan 0 72 62ms 8 Feb 2026 317th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 317th GolfingSuccess 🇬🇷 0 73 8ms 47 hours ago 319th not-a-pokemon 0 74 15ms 2 days ago 320th Shanethegamer 🇺🇸 0 75 107ms 26 Nov 2024 First Prev 241–320 of 483 Next Last