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 71st lukegustafson 🇺🇸 0 44 12ms 16 Jun 2025 71st JOrE20 0 44 12ms 6 Dec 2025 71st AdrienHache 🇫🇷 0 44 60ms 5 Feb 2026 71st voytxt 🇨🇿 0 44 41ms 6 Feb 2026 71st Steffan153 🇫🇮 0 44 28ms 19 Feb 2026 71st CaedenHarper 🇨🇦 0 44 12ms 38 hours ago 71st fuzzylojik-golf 🇺🇸 0 44 13ms 12 hours ago 71st fuzzylojik-golf 🇺🇸 0 44 9ms 12 hours ago 89th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 89th saito-ta 🇯🇵 0 45 555ms 10 May 2025 89th XenThe 🇬🇧 0 45 12ms 15 Jul 2025 89th smclaughlin-cf 0 45 12ms 14 Oct 2025 89th albanian-laundromat 0 45 13ms 2 days ago 94th Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 94th lyphyser 0 46 51ms 11 Feb 2025 94th Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 94th GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 94th rucin93 🇵🇱 0 46 8ms 11 May 2025 94th edsrzf 🇳🇿 0 46 7ms 15 hours ago 100th LukeBridges 🇬🇧 0 47 12ms 49 mins ago 101st kg583 🇺🇸 0 50 470ms 1 Dec 2024 101st Shanethegamer 🇺🇸 0 50 471ms 10 Dec 2024 101st GolfingSuccess 🇬🇷 0 50 460ms 30 Dec 2024 101st ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 101st pardouin 🇫🇷 0 50 433ms 24 Feb 2025 101st emgordon154 0 50 424ms 9 May 2025 101st Steffan153 🇫🇮 0 50 378ms 25 days ago 101st CaedenHarper 🇨🇦 0 50 733ms 2 days ago 101st Steffan153 🇫🇮 0 50 776ms 2 days ago 101st edsrzf 🇳🇿 0 50 872ms 2 days ago 101st GolfingSuccess 🇬🇷 0 50 765ms 38 hours ago 101st fuzzylojik-golf 🇺🇸 0 50 420ms 15 hours ago 113th lifthrasiir 🇰🇷 0 51 433ms 11 Dec 2024 113th Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 113th GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 113th rucin93 🇵🇱 0 51 159ms 8 May 2025 113th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 113th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 113th DialFrost 🇸🇬 0 51 324ms 8 Sep 2025 120th DialFrost 🇸🇬 0 52 474ms 17 Feb 2025 120th CaedenHarper 🇨🇦 0 52 530ms 2 days ago 120th albanian-laundromat 0 52 5ms 2 days ago 123rd antimon2 🇯🇵 0 53 288ms 16 Dec 2024 123rd Shanethegamer 🇺🇸 0 53 315ms 1 Feb 2025 123rd dokutan 0 53 426ms 15 Aug 2025 123rd MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 123rd albanian-laundromat 0 53 467ms 15 Jan 2026 123rd AlephSquirrel 0 53 383ms 45 hours ago 129th Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 129th DialFrost 🇸🇬 0 54 269ms 17 Feb 2025 129th error256 0 54 66ms 12 Apr 2025 129th albanian-laundromat 0 54 779ms 15 Jan 2026 129th GolfingSuccess 🇬🇷 0 54 71ms 39 hours ago 134th albanian-laundromat 0 55 39ms 2 days ago 135th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 135th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 135th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 135th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 139th Shanethegamer 🇺🇸 0 57 326ms 25 May 2025 139th sean-niemann 🇺🇸 0 57 176ms 25 May 2025 139th edsrzf 🇳🇿 0 57 167ms 25 May 2025 139th GolfingSuccess 🇬🇷 0 57 171ms 13 Dec 2025 139th Matter1024 🇮🇳 0 57 68ms 13 Feb 2026 139th albanian-laundromat 0 57 296ms 25 hours ago 145th GolfingSuccess 🇬🇷 0 58 4,218ms 8 May 2025 146th GolfingSuccess 🇬🇷 0 59 17ms 8 May 2025 146th IanUtley 0 59 18ms 8 May 2025 146th GolfingSuccess 🇬🇷 0 59 63ms 8 May 2025 149th pardouin 🇫🇷 0 60 2,725ms 15 Feb 2026 149th fuzzylojik-golf 🇺🇸 0 60 16ms 13 hours ago 151st GolfingSuccess 🇬🇷 0 61 2,468ms 8 May 2025 151st madex 🇩🇪 0 61 2,598ms 3 days ago 153rd lifthrasiir 🇰🇷 0 62 37ms 22 Nov 2024 153rd GolfingSuccess 🇬🇷 0 62 15ms 25 Nov 2024 153rd AlephSquirrel 0 62 15ms 25 Nov 2024 153rd hallvabo 🇳🇴 0 62 38ms 26 Nov 2024 153rd kg583 🇺🇸 0 62 36ms 1 Dec 2024 153rd CornerMercury 🇬🇧 0 62 15ms 3 Dec 2024 153rd ndren 0 62 15ms 3 Dec 2024 153rd btnlq 0 62 15ms 4 Dec 2024 First Prev 81–160 of 325 Next Last