The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 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 395th Yax42 🇫🇷 0 89 13ms 16 hours ago 395th dokutan 0 89 476ms 15 hours ago 403rd namelessiw 0 92 504ms 10 Oct 2025 403rd fuzzylojik-golf 🇺🇸 0 92 383ms 3 days ago 403rd madex 🇩🇪 0 92 12ms 3 days ago 406th CaedenHarper 🇨🇦 0 93 13ms 6 days ago 406th DialFrost 🇸🇬 0 93 13ms 7 hours ago 408th edsrzf 🇳🇿 0 94 187ms 17 May 2025 408th edsrzf 🇳🇿 0 94 21ms 2 days ago 410th Yax42 🇫🇷 0 95 389ms 3 days ago 411th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 411th HumanoidCPU 0 96 166ms 3 days ago 413th HumanoidCPU 0 97 7ms 24 hours ago 414th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 415th snydej 0 99 43ms 22 Nov 2024 415th albanian-laundromat 0 99 343ms 6 days ago 415th dokutan 0 99 409ms 2 days ago 415th dokutan 0 99 12ms 15 hours ago 419th dokutan 0 100 19ms 2 days ago 419th ovs-code 🇩🇪 0 100 160ms 33 hours ago 421st HumanoidCPU 0 101 361ms 2 days ago 421st HumanoidCPU 0 101 382ms 2 days ago 423rd sean-niemann 🇺🇸 0 102 286ms 8 May 2025 423rd Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 423rd edsrzf 🇳🇿 0 102 295ms 9 May 2025 423rd GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 423rd ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 423rd CaedenHarper 🇨🇦 0 102 301ms 6 days ago 423rd fuzzylojik-golf 🇺🇸 0 102 292ms 4 days ago 423rd emgordon154 0 102 274ms 2 days ago 423rd edsrzf 🇳🇿 0 102 341ms 40 hours ago 423rd Steffan153 🇫🇮 0 102 338ms 33 hours ago 423rd Steffan153 🇫🇮 0 102 284ms 29 hours ago 423rd MeWhenI 🇻🇦 0 102 287ms 16 hours ago 435th lukechampine 0 103 301ms 7 Jun 2025 435th chris124567 0 103 294ms 8 Jun 2025 435th albanian-laundromat 0 103 270ms 16 Dec 2025 435th GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 435th HumanoidCPU 0 103 329ms 2 days ago 440th madex 🇩🇪 0 104 226ms 17 hours ago 441st UnderKoen 🇳🇱 0 107 2,121ms 2 days ago 442nd HumanoidCPU 0 108 13ms 24 hours ago 443rd edsrzf 🇳🇿 0 109 21ms 42 hours ago 443rd emgordon154 0 109 84ms 29 hours ago 445th kg583 🇺🇸 0 110 14ms 12 Jan 2026 445th Steffan153 🇫🇮 0 110 28ms 31 hours ago 445th edsrzf 🇳🇿 0 110 31ms 30 hours ago 448th GolfingSuccess 🇬🇷 0 111 107ms 47 hours ago 449th retrohun 0 112 16ms 3 days ago 449th edsrzf 🇳🇿 0 112 27ms 44 hours ago 451st prestosilver 🇺🇸 0 115 418ms 3 days ago 451st HumanoidCPU 0 115 260ms 2 days ago 453rd GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 454th not-a-pokemon 0 119 15ms 2 days ago 455th edsrzf 🇳🇿 0 127 58ms 2 days ago 455th Steffan153 🇫🇮 0 127 57ms 29 hours ago 457th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 458th CaedenHarper 🇨🇦 0 129 446ms 6 days ago 459th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 459th madex 🇩🇪 0 130 412ms 18 hours ago 461st edsrzf 🇳🇿 0 134 22ms 47 hours ago 462nd GolfingSuccess 🇬🇷 0 135 80ms 13 hours ago 463rd Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 464th albanian-laundromat 0 137 27ms 5 days ago 465th GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 466th dokutan 0 140 279ms 3 hours ago 467th canissimia 🇦🇶 0 143 15ms 2 days ago 468th emgordon154 0 150 15ms 9 May 2025 468th albanian-laundromat 0 150 28ms 5 days ago 470th kasarino 0 157 12ms 2 days ago 471st dokutan 0 158 74ms 15 hours ago 472nd JOrE20 0 159 69ms 14 Feb 2026 473rd emgordon154 0 162 1,822ms 45 hours ago 474th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 475th Shanethegamer 🇺🇸 0 197 1,504ms 1 Feb 2025 476th emgordon154 0 199 1,509ms 2 days ago 477th voytxt 🇨🇿 0 200 1,471ms 6 Feb 2026 477th GolfingSuccess 🇬🇷 0 200 1,564ms 2 days ago 477th HumanoidCPU 0 200 408ms 24 hours ago 480th albanian-laundromat 0 214 120ms 6 hours ago First Prev 401–480 of 484 Next Last