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 80th targrik 0 43 9ms 3 Sep 2025 82nd Shanethegamer 🇺🇸 0 44 12ms 10 Dec 2024 82nd DialFrost 🇸🇬 0 44 11ms 24 Feb 2025 82nd rucin93 🇵🇱 0 44 12ms 24 Feb 2025 82nd error256 0 44 14ms 12 Apr 2025 82nd GolfingSuccess 🇬🇷 0 44 9ms 8 May 2025 82nd GolfingSuccess 🇬🇷 0 44 13ms 8 May 2025 82nd Natanaelel 🇸🇪 0 44 12ms 8 May 2025 82nd sean-niemann 🇺🇸 0 44 12ms 8 May 2025 82nd edsrzf 🇳🇿 0 44 9ms 10 May 2025 82nd 4atj 0 44 15ms 8 Jun 2025 82nd lukegustafson 🇺🇸 0 44 14ms 16 Jun 2025 82nd JOrE20 0 44 12ms 6 Dec 2025 82nd AdrienHache 🇫🇷 0 44 60ms 5 Feb 2026 82nd voytxt 🇨🇿 0 44 12ms 6 Feb 2026 82nd Steffan153 🇫🇮 0 44 16ms 19 Feb 2026 82nd CaedenHarper 🇨🇦 0 44 14ms 2 days ago 82nd fuzzylojik-golf 🇺🇸 0 44 11ms 44 hours ago 82nd fuzzylojik-golf 🇺🇸 0 44 9ms 44 hours ago 82nd Yax42 🇫🇷 0 44 12ms 28 hours ago 82nd helbling 🇨🇭 0 44 12ms 27 hours ago 82nd HumanoidCPU 0 44 15ms 13 hours ago 82nd emgordon154 0 44 12ms 8 hours ago 82nd MeWhenI 🇻🇦 0 44 14ms 3 hours ago 82nd edsrzf 🇳🇿 0 44 13ms 2 hours ago 106th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 106th saito-ta 🇯🇵 0 45 555ms 10 May 2025 106th XenThe 🇬🇧 0 45 14ms 15 Jul 2025 106th smclaughlin-cf 0 45 13ms 14 Oct 2025 106th albanian-laundromat 0 45 12ms 3 days ago 111th Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 111th lyphyser 0 46 51ms 11 Feb 2025 111th Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 111th GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 111th rucin93 🇵🇱 0 46 8ms 11 May 2025 111th edsrzf 🇳🇿 0 46 7ms 47 hours ago 117th LukeBridges 🇬🇧 0 47 11ms 32 hours ago 118th HumanoidCPU 0 48 1,424ms 11 hours ago 119th kg583 🇺🇸 0 50 470ms 1 Dec 2024 119th Shanethegamer 🇺🇸 0 50 471ms 10 Dec 2024 119th GolfingSuccess 🇬🇷 0 50 460ms 30 Dec 2024 119th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 119th pardouin 🇫🇷 0 50 433ms 24 Feb 2025 119th emgordon154 0 50 424ms 9 May 2025 119th Steffan153 🇫🇮 0 50 378ms 26 days ago 119th CaedenHarper 🇨🇦 0 50 733ms 3 days ago 119th Steffan153 🇫🇮 0 50 776ms 3 days ago 119th edsrzf 🇳🇿 0 50 872ms 3 days ago 119th GolfingSuccess 🇬🇷 0 50 765ms 2 days ago 119th fuzzylojik-golf 🇺🇸 0 50 420ms 47 hours ago 131st lifthrasiir 🇰🇷 0 51 433ms 11 Dec 2024 131st Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 131st GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 131st rucin93 🇵🇱 0 51 159ms 8 May 2025 131st Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 131st sean-niemann 🇺🇸 0 51 150ms 9 May 2025 131st DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 131st albanian-laundromat 0 51 5ms 18 hours ago 139th DialFrost 🇸🇬 0 52 461ms 17 Feb 2025 139th CaedenHarper 🇨🇦 0 52 530ms 4 days ago 139th HumanoidCPU 0 52 394ms 24 hours ago 142nd antimon2 🇯🇵 0 53 288ms 16 Dec 2024 142nd Shanethegamer 🇺🇸 0 53 315ms 1 Feb 2025 142nd dokutan 0 53 426ms 15 Aug 2025 142nd MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 142nd albanian-laundromat 0 53 467ms 15 Jan 2026 142nd AlephSquirrel 0 53 383ms 3 days ago 142nd DialFrost 🇸🇬 0 53 330ms 61 mins ago 149th Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 149th error256 0 54 66ms 12 Apr 2025 149th albanian-laundromat 0 54 779ms 15 Jan 2026 149th GolfingSuccess 🇬🇷 0 54 71ms 2 days ago 149th dokutan 0 54 778ms 28 hours ago 149th fuzzylojik-golf 🇺🇸 0 54 81ms 9 hours ago 155th albanian-laundromat 0 55 39ms 3 days ago 156th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 156th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 156th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 156th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 160th Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 First Prev 81–160 of 400 Next Last