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 79th rucin93 🇵🇱 0 44 10ms 24 Feb 2025 79th error256 0 44 11ms 12 Apr 2025 79th GolfingSuccess 🇬🇷 0 44 9ms 8 May 2025 79th GolfingSuccess 🇬🇷 0 44 12ms 8 May 2025 79th Natanaelel 🇸🇪 0 44 10ms 8 May 2025 79th sean-niemann 🇺🇸 0 44 11ms 8 May 2025 79th edsrzf 🇳🇿 0 44 9ms 10 May 2025 79th 4atj 0 44 11ms 8 Jun 2025 79th lukegustafson 🇺🇸 0 44 12ms 16 Jun 2025 79th JOrE20 0 44 12ms 6 Dec 2025 79th AdrienHache 🇫🇷 0 44 60ms 5 Feb 2026 79th voytxt 🇨🇿 0 44 41ms 6 Feb 2026 79th Steffan153 🇫🇮 0 44 28ms 19 Feb 2026 79th CaedenHarper 🇨🇦 0 44 12ms 2 days ago 79th fuzzylojik-golf 🇺🇸 0 44 12ms 34 hours ago 79th fuzzylojik-golf 🇺🇸 0 44 9ms 34 hours ago 79th Yax42 🇫🇷 0 44 12ms 18 hours ago 79th helbling 🇨🇭 0 44 12ms 17 hours ago 79th HumanoidCPU 0 44 12ms 3 hours ago 100th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 100th saito-ta 🇯🇵 0 45 555ms 10 May 2025 100th XenThe 🇬🇧 0 45 12ms 15 Jul 2025 100th smclaughlin-cf 0 45 12ms 14 Oct 2025 100th albanian-laundromat 0 45 13ms 3 days ago 105th Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 105th lyphyser 0 46 51ms 11 Feb 2025 105th Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 105th GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 105th rucin93 🇵🇱 0 46 8ms 11 May 2025 105th edsrzf 🇳🇿 0 46 7ms 37 hours ago 111th LukeBridges 🇬🇧 0 47 12ms 22 hours ago 112th HumanoidCPU 0 48 1,424ms 116 mins ago 113th kg583 🇺🇸 0 50 470ms 1 Dec 2024 113th Shanethegamer 🇺🇸 0 50 471ms 10 Dec 2024 113th GolfingSuccess 🇬🇷 0 50 460ms 30 Dec 2024 113th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 113th pardouin 🇫🇷 0 50 433ms 24 Feb 2025 113th emgordon154 0 50 424ms 9 May 2025 113th Steffan153 🇫🇮 0 50 378ms 26 days ago 113th CaedenHarper 🇨🇦 0 50 733ms 3 days ago 113th Steffan153 🇫🇮 0 50 776ms 3 days ago 113th edsrzf 🇳🇿 0 50 872ms 3 days ago 113th GolfingSuccess 🇬🇷 0 50 765ms 2 days ago 113th fuzzylojik-golf 🇺🇸 0 50 420ms 37 hours ago 125th lifthrasiir 🇰🇷 0 51 433ms 11 Dec 2024 125th Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 125th GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 125th rucin93 🇵🇱 0 51 159ms 8 May 2025 125th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 125th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 125th DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 125th albanian-laundromat 0 51 5ms 8 hours ago 133rd DialFrost 🇸🇬 0 52 474ms 17 Feb 2025 133rd CaedenHarper 🇨🇦 0 52 530ms 3 days ago 133rd HumanoidCPU 0 52 394ms 14 hours ago 136th antimon2 🇯🇵 0 53 288ms 16 Dec 2024 136th Shanethegamer 🇺🇸 0 53 315ms 1 Feb 2025 136th dokutan 0 53 426ms 15 Aug 2025 136th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 136th albanian-laundromat 0 53 467ms 15 Jan 2026 136th AlephSquirrel 0 53 383ms 2 days ago 142nd Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 142nd DialFrost 🇸🇬 0 54 269ms 17 Feb 2025 142nd error256 0 54 66ms 12 Apr 2025 142nd albanian-laundromat 0 54 779ms 15 Jan 2026 142nd GolfingSuccess 🇬🇷 0 54 71ms 2 days ago 142nd dokutan 0 54 800ms 18 hours ago 148th albanian-laundromat 0 55 39ms 3 days ago 149th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 149th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 149th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 149th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 153rd Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 153rd sean-niemann 🇺🇸 0 57 176ms 25 May 2025 153rd edsrzf 🇳🇿 0 57 167ms 25 May 2025 153rd GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 153rd Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 153rd albanian-laundromat 0 57 296ms 47 hours ago 159th GolfingSuccess 🇬🇷 0 58 4,218ms 8 May 2025 160th GolfingSuccess 🇬🇷 0 59 17ms 8 May 2025 First Prev 81–160 of 378 Next Last