The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 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 399th madex 🇩🇪 0 92 12ms 2 days ago 402nd CaedenHarper 🇨🇦 0 93 13ms 5 days ago 403rd DialFrost 🇸🇬 0 94 13ms 10 May 2025 403rd edsrzf 🇳🇿 0 94 187ms 17 May 2025 403rd edsrzf 🇳🇿 0 94 21ms 44 hours ago 406th Yax42 🇫🇷 0 95 389ms 2 days ago 407th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 407th HumanoidCPU 0 96 166ms 2 days ago 409th HumanoidCPU 0 97 7ms 14 hours ago 410th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 411th snydej 0 99 43ms 22 Nov 2024 411th albanian-laundromat 0 99 343ms 5 days ago 411th dokutan 0 99 409ms 2 days ago 411th dokutan 0 99 12ms 6 hours ago 415th dokutan 0 100 19ms 2 days ago 415th ovs-code 🇩🇪 0 100 160ms 24 hours ago 417th HumanoidCPU 0 101 361ms 41 hours ago 417th HumanoidCPU 0 101 382ms 39 hours ago 419th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 419th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 419th edsrzf 🇳🇿 0 102 295ms 9 May 2025 419th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 419th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 419th CaedenHarper 🇨🇦 0 102 301ms 5 days ago 419th fuzzylojik-golf 🇺🇸 0 102 292ms 3 days ago 419th emgordon154 0 102 274ms 2 days ago 419th edsrzf 🇳🇿 0 102 341ms 31 hours ago 419th Steffan153 🇫🇮 0 102 338ms 23 hours ago 419th Steffan153 🇫🇮 0 102 284ms 19 hours ago 419th MeWhenI 🇻🇦 0 102 287ms 6 hours ago 431st lukechampine 0 103 301ms 7 Jun 2025 431st chris124567 0 103 294ms 8 Jun 2025 431st albanian-laundromat 0 103 270ms 16 Dec 2025 431st GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 431st HumanoidCPU 0 103 329ms 39 hours ago 436th madex 🇩🇪 0 104 226ms 8 hours ago 437th UnderKoen 🇳🇱 0 107 2,121ms 2 days ago 438th HumanoidCPU 0 108 13ms 15 hours ago 439th edsrzf 🇳🇿 0 109 21ms 33 hours ago 439th emgordon154 0 109 84ms 19 hours ago 441st kg583 🇺🇸 0 110 14ms 12 Jan 2026 441st Steffan153 🇫🇮 0 110 28ms 22 hours ago 441st edsrzf 🇳🇿 0 110 31ms 21 hours ago 444th GolfingSuccess 🇬🇷 0 111 107ms 37 hours ago 445th retrohun 0 112 16ms 3 days ago 445th edsrzf 🇳🇿 0 112 27ms 35 hours ago 447th prestosilver 🇺🇸 0 115 418ms 3 days ago 447th HumanoidCPU 0 115 260ms 39 hours ago 449th GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 450th not-a-pokemon 0 119 15ms 2 days ago 451st edsrzf 🇳🇿 0 127 58ms 2 days ago 451st Steffan153 🇫🇮 0 127 57ms 19 hours ago 453rd saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 454th CaedenHarper 🇨🇦 0 129 446ms 5 days ago 455th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 455th madex 🇩🇪 0 130 412ms 8 hours ago 457th edsrzf 🇳🇿 0 134 22ms 38 hours ago 458th GolfingSuccess 🇬🇷 0 135 80ms 4 hours ago 459th Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 460th albanian-laundromat 0 137 27ms 5 days ago 461st GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 462nd dokutan 0 141 287ms 6 hours ago 463rd canissimia 🇦🇶 0 143 15ms 2 days ago 464th emgordon154 0 150 15ms 9 May 2025 464th albanian-laundromat 0 150 28ms 5 days ago 466th kasarino 0 157 12ms 46 hours ago 467th dokutan 0 158 74ms 6 hours ago 468th JOrE20 0 159 69ms 14 Feb 2026 469th emgordon154 0 162 1,822ms 35 hours ago 470th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 471st Shanethegamer 🇺🇸 0 197 1,504ms 1 Feb 2025 472nd emgordon154 0 199 1,509ms 42 hours ago 473rd voytxt 🇨🇿 0 200 1,471ms 6 Feb 2026 473rd GolfingSuccess 🇬🇷 0 200 1,564ms 2 days ago 473rd HumanoidCPU 0 200 408ms 15 hours ago 476th albanian-laundromat 0 235 112ms 39 hours ago 477th ovs-code 🇩🇪 0 237 107ms 41 hours ago 478th albanian-laundromat 0 243 15ms 5 days ago 479th JOrE20 0 381 2,653ms 29 Dec 2025 480th CaedenHarper 🇨🇦 0 853 550ms 4 days ago First Prev 401–480 of 480