The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 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 77th GolfingSuccess 🇬🇷 0 44 9ms 8 May 2025 77th GolfingSuccess 🇬🇷 0 44 12ms 8 May 2025 77th Natanaelel 🇸🇪 0 44 10ms 8 May 2025 77th sean-niemann 🇺🇸 0 44 11ms 8 May 2025 77th edsrzf 🇳🇿 0 44 9ms 10 May 2025 77th 4atj 0 44 11ms 8 Jun 2025 77th lukegustafson 🇺🇸 0 44 12ms 16 Jun 2025 77th JOrE20 0 44 12ms 6 Dec 2025 77th AdrienHache 🇫🇷 0 44 60ms 5 Feb 2026 77th voytxt 🇨🇿 0 44 41ms 6 Feb 2026 77th Steffan153 🇫🇮 0 44 28ms 19 Feb 2026 77th CaedenHarper 🇨🇦 0 44 12ms 2 days ago 77th fuzzylojik-golf 🇺🇸 0 44 12ms 29 hours ago 77th fuzzylojik-golf 🇺🇸 0 44 9ms 28 hours ago 77th Yax42 🇫🇷 0 44 12ms 13 hours ago 77th helbling 🇨🇭 0 44 12ms 11 hours ago 97th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 97th saito-ta 🇯🇵 0 45 555ms 10 May 2025 97th XenThe 🇬🇧 0 45 12ms 15 Jul 2025 97th smclaughlin-cf 0 45 12ms 14 Oct 2025 97th albanian-laundromat 0 45 13ms 3 days ago 102nd Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 102nd lyphyser 0 46 51ms 11 Feb 2025 102nd Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 102nd GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 102nd rucin93 🇵🇱 0 46 8ms 11 May 2025 102nd edsrzf 🇳🇿 0 46 7ms 31 hours ago 108th LukeBridges 🇬🇧 0 47 12ms 17 hours ago 109th kg583 🇺🇸 0 50 470ms 1 Dec 2024 109th Shanethegamer 🇺🇸 0 50 471ms 10 Dec 2024 109th GolfingSuccess 🇬🇷 0 50 460ms 30 Dec 2024 109th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 109th pardouin 🇫🇷 0 50 433ms 24 Feb 2025 109th emgordon154 0 50 424ms 9 May 2025 109th Steffan153 🇫🇮 0 50 378ms 26 days ago 109th CaedenHarper 🇨🇦 0 50 733ms 3 days ago 109th Steffan153 🇫🇮 0 50 776ms 3 days ago 109th edsrzf 🇳🇿 0 50 872ms 3 days ago 109th GolfingSuccess 🇬🇷 0 50 765ms 2 days ago 109th fuzzylojik-golf 🇺🇸 0 50 420ms 32 hours ago 121st lifthrasiir 🇰🇷 0 51 433ms 11 Dec 2024 121st Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 121st GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 121st rucin93 🇵🇱 0 51 159ms 8 May 2025 121st Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 121st sean-niemann 🇺🇸 0 51 150ms 9 May 2025 121st DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 121st albanian-laundromat 0 51 5ms 2 hours ago 129th DialFrost 🇸🇬 0 52 474ms 17 Feb 2025 129th CaedenHarper 🇨🇦 0 52 530ms 3 days ago 129th HumanoidCPU 0 52 394ms 9 hours ago 132nd antimon2 🇯🇵 0 53 288ms 16 Dec 2024 132nd Shanethegamer 🇺🇸 0 53 315ms 1 Feb 2025 132nd dokutan 0 53 426ms 15 Aug 2025 132nd MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 132nd albanian-laundromat 0 53 467ms 15 Jan 2026 132nd AlephSquirrel 0 53 383ms 2 days ago 138th Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 138th DialFrost 🇸🇬 0 54 269ms 17 Feb 2025 138th error256 0 54 66ms 12 Apr 2025 138th albanian-laundromat 0 54 779ms 15 Jan 2026 138th GolfingSuccess 🇬🇷 0 54 71ms 2 days ago 138th dokutan 0 54 800ms 12 hours ago 144th albanian-laundromat 0 55 39ms 3 days ago 145th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 145th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 145th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 145th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 149th Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 149th sean-niemann 🇺🇸 0 57 176ms 25 May 2025 149th edsrzf 🇳🇿 0 57 167ms 25 May 2025 149th GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 149th Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 149th albanian-laundromat 0 57 296ms 42 hours ago 155th GolfingSuccess 🇬🇷 0 58 4,218ms 8 May 2025 156th GolfingSuccess 🇬🇷 0 59 17ms 8 May 2025 156th IanUtley 0 59 18ms 8 May 2025 156th GolfingSuccess 🇬🇷 0 59 63ms 8 May 2025 159th pardouin 🇫🇷 0 60 2,725ms 15 Feb 2026 159th fuzzylojik-golf 🇺🇸 0 60 16ms 30 hours ago First Prev 81–160 of 362 Next Last