The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 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 75th Natanaelel 🇸🇪 0 44 10ms 8 May 2025 75th sean-niemann 🇺🇸 0 44 11ms 8 May 2025 75th edsrzf 🇳🇿 0 44 9ms 10 May 2025 75th 4atj 0 44 11ms 8 Jun 2025 75th lukegustafson 🇺🇸 0 44 12ms 16 Jun 2025 75th JOrE20 0 44 12ms 6 Dec 2025 75th AdrienHache 🇫🇷 0 44 60ms 5 Feb 2026 75th voytxt 🇨🇿 0 44 41ms 6 Feb 2026 75th Steffan153 🇫🇮 0 44 28ms 19 Feb 2026 75th CaedenHarper 🇨🇦 0 44 12ms 44 hours ago 75th fuzzylojik-golf 🇺🇸 0 44 13ms 19 hours ago 75th fuzzylojik-golf 🇺🇸 0 44 9ms 18 hours ago 75th Yax42 🇫🇷 0 44 12ms 3 hours ago 75th helbling 🇨🇭 0 44 12ms 115 mins ago 95th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 95th saito-ta 🇯🇵 0 45 555ms 10 May 2025 95th XenThe 🇬🇧 0 45 12ms 15 Jul 2025 95th smclaughlin-cf 0 45 12ms 14 Oct 2025 95th albanian-laundromat 0 45 13ms 2 days ago 100th Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 100th lyphyser 0 46 51ms 11 Feb 2025 100th Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 100th GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 100th rucin93 🇵🇱 0 46 8ms 11 May 2025 100th edsrzf 🇳🇿 0 46 7ms 21 hours ago 106th LukeBridges 🇬🇧 0 47 12ms 7 hours ago 107th kg583 🇺🇸 0 50 470ms 1 Dec 2024 107th Shanethegamer 🇺🇸 0 50 471ms 10 Dec 2024 107th GolfingSuccess 🇬🇷 0 50 460ms 30 Dec 2024 107th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 107th pardouin 🇫🇷 0 50 433ms 24 Feb 2025 107th emgordon154 0 50 424ms 9 May 2025 107th Steffan153 🇫🇮 0 50 378ms 25 days ago 107th CaedenHarper 🇨🇦 0 50 733ms 2 days ago 107th Steffan153 🇫🇮 0 50 776ms 2 days ago 107th edsrzf 🇳🇿 0 50 872ms 2 days ago 107th GolfingSuccess 🇬🇷 0 50 765ms 45 hours ago 107th fuzzylojik-golf 🇺🇸 0 50 420ms 22 hours ago 119th lifthrasiir 🇰🇷 0 51 433ms 11 Dec 2024 119th Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 119th GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 119th rucin93 🇵🇱 0 51 159ms 8 May 2025 119th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 119th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 119th DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 126th DialFrost 🇸🇬 0 52 474ms 17 Feb 2025 126th CaedenHarper 🇨🇦 0 52 530ms 3 days ago 126th albanian-laundromat 0 52 5ms 3 days ago 129th antimon2 🇯🇵 0 53 288ms 16 Dec 2024 129th Shanethegamer 🇺🇸 0 53 315ms 1 Feb 2025 129th dokutan 0 53 426ms 15 Aug 2025 129th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 129th albanian-laundromat 0 53 467ms 15 Jan 2026 129th AlephSquirrel 0 53 383ms 2 days ago 135th Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 135th DialFrost 🇸🇬 0 54 269ms 17 Feb 2025 135th error256 0 54 66ms 12 Apr 2025 135th albanian-laundromat 0 54 779ms 15 Jan 2026 135th GolfingSuccess 🇬🇷 0 54 71ms 45 hours ago 135th dokutan 0 54 800ms 3 hours ago 141st albanian-laundromat 0 55 39ms 2 days ago 142nd Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 142nd GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 142nd sean-niemann 🇺🇸 0 56 67ms 8 May 2025 142nd DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 146th Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 146th sean-niemann 🇺🇸 0 57 176ms 25 May 2025 146th edsrzf 🇳🇿 0 57 167ms 25 May 2025 146th GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 146th Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 146th albanian-laundromat 0 57 296ms 32 hours ago 152nd GolfingSuccess 🇬🇷 0 58 4,218ms 8 May 2025 153rd GolfingSuccess 🇬🇷 0 59 17ms 8 May 2025 153rd IanUtley 0 59 18ms 8 May 2025 153rd GolfingSuccess 🇬🇷 0 59 63ms 8 May 2025 156th pardouin 🇫🇷 0 60 2,725ms 15 Feb 2026 156th fuzzylojik-golf 🇺🇸 0 60 16ms 20 hours ago 158th GolfingSuccess 🇬🇷 0 61 2,468ms 8 May 2025 158th madex 🇩🇪 0 61 2,738ms 3 days ago 160th lifthrasiir 🇰🇷 0 62 37ms 22 Nov 2024 First Prev 81–160 of 340 Next Last