The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Gray Code Decoder in all languages in chars. 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 Chars Time Submitted 321st rucin93 🇵🇱 0 101 373ms 21 days ago 322nd fantaize 0 102 148ms 16 days ago 322nd emgordon154 0 102 4ms 43 hours ago 322nd madex 🇩🇪 0 102 155ms 11 mins ago 325th CLOStrophobic 🇮🇹 0 104 21ms 18 Jan 2025 325th kasarino 0 104 4ms 28 hours ago 327th kg583 🇺🇸 0 106 38ms 9 May 2025 328th Shanethegamer 🇺🇸 0 107 8ms 9 May 2025 328th AlephSquirrel 0 107 20ms 14 May 2025 330th CLOStrophobic 🇮🇹 0 108 47ms 17 Feb 2025 330th edsrzf 🇳🇿 0 108 1,839ms 21 May 2025 330th albanian-laundromat 0 108 31ms 5 Jan 2026 330th albanian-laundromat 0 108 83ms 17 days ago 334th kg583 🇺🇸 0 109 43ms 23 days ago 334th GolfingSuccess 🇬🇷 0 109 46ms 23 days ago 334th edsrzf 🇳🇿 0 109 43ms 41 hours ago 334th edsrzf 🇳🇿 0 109 35ms 14 hours ago 338th retrohun 0 111 41ms 2 days ago 339th GolfingSuccess 🇬🇷 0 112 44ms 24 Jan 2026 340th Shanethegamer 🇺🇸 0 114 1,281ms 9 May 2025 340th error256 0 114 513ms 29 Jan 2026 340th edsrzf 🇳🇿 0 114 489ms 23 hours ago 343rd GolfingSuccess 🇬🇷 0 117 283ms 12 Jan 2026 343rd albanian-laundromat 0 117 43ms 15 days ago 345th CaedenHarper 🇨🇦 0 120 274ms 2 days ago 345th emgordon154 0 120 65ms 43 hours ago 347th Shanethegamer 🇺🇸 0 121 148ms 13 Dec 2024 347th elgan65536 🇺🇸 0 121 178ms 9 Feb 2026 349th albanian-laundromat 0 122 264ms 5 Jan 2026 350th stefangimmillaro 0 124 298ms 10 May 2025 350th Shanethegamer 🇺🇸 0 124 150ms 3 Jun 2025 352nd AstroOrbis 0 126 23ms 12 Aug 2025 352nd btjones0 0 126 168ms 40 hours ago 354th JDiLenarda 🇫🇷 0 131 1,330ms 32 hours ago 355th HumanoidCPU 0 133 160ms 45 hours ago 356th edsrzf 🇳🇿 0 136 4,806ms 19 May 2025 357th GolfingSuccess 🇬🇷 0 137 93ms 20 hours ago 358th Shanethegamer 🇺🇸 0 139 309ms 13 Dec 2024 358th UnderKoen 🇳🇱 0 139 1,178ms 33 hours ago 360th Shanethegamer 🇺🇸 0 146 31ms 9 May 2025 361st canissimia 🇦🇶 0 152 18ms 2 hours ago 362nd emgordon154 0 185 1,780ms 17 hours ago 363rd albanian-laundromat 0 207 1,444ms 6 Jan 2026 364th albanian-laundromat 0 208 199ms 21 hours ago 365th emgordon154 0 235 1,475ms 99 mins ago 366th albanian-laundromat 0 265 68ms 8 Dec 2025 367th MeWhenI 🇻🇦 0 286 231ms 23 hours ago First Prev 321–367 of 367
