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 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 313th elgan65536 🇺🇸 0 86 168ms 24 days ago 313th CaedenHarper 🇨🇦 0 86 399ms 3 days ago 313th CaedenHarper 🇨🇦 0 86 153ms 3 days ago 313th edsrzf 🇳🇿 0 86 414ms 22 hours ago 313th emgordon154 0 86 406ms 8 hours ago 313th GolfingSuccess 🇬🇷 0 86 19ms 61 mins ago 327th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 327th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 327th albanian-laundromat 0 87 1,424ms 3 days ago 327th Yax42 🇫🇷 0 87 2,430ms 31 hours ago 331st kg583 🇺🇸 0 88 23ms 12 Feb 2026 331st fuzzylojik-golf 🇺🇸 0 88 152ms 46 hours ago 333rd Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 333rd Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 333rd DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 333rd CaedenHarper 🇨🇦 0 89 103ms 3 days ago 337th Yax42 🇫🇷 0 90 13ms 31 hours ago 338th GolfingSuccess 🇬🇷 0 91 14ms 13 Dec 2025 339th namelessiw 0 92 504ms 10 Oct 2025 339th fuzzylojik-golf 🇺🇸 0 92 383ms 47 hours ago 339th madex 🇩🇪 0 92 12ms 26 hours ago 342nd CaedenHarper 🇨🇦 0 93 13ms 4 days ago 343rd DialFrost 🇸🇬 0 94 13ms 10 May 2025 343rd edsrzf 🇳🇿 0 94 187ms 17 May 2025 343rd edsrzf 🇳🇿 0 94 21ms 5 hours ago 346th Yax42 🇫🇷 0 95 389ms 31 hours ago 347th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 347th HumanoidCPU 0 96 160ms 24 hours ago 349th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 350th snydej 0 99 43ms 22 Nov 2024 350th albanian-laundromat 0 99 343ms 4 days ago 350th dokutan 0 99 409ms 13 hours ago 353rd dokutan 0 100 19ms 12 hours ago 354th HumanoidCPU 0 101 361ms 2 hours ago 354th HumanoidCPU 0 101 382ms 27 mins ago 356th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 356th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 356th edsrzf 🇳🇿 0 102 295ms 9 May 2025 356th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 356th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 356th CaedenHarper 🇨🇦 0 102 301ms 4 days ago 356th fuzzylojik-golf 🇺🇸 0 102 292ms 47 hours ago 356th emgordon154 0 102 274ms 18 hours ago 364th lukechampine 0 103 301ms 7 Jun 2025 364th chris124567 0 103 294ms 8 Jun 2025 364th albanian-laundromat 0 103 270ms 16 Dec 2025 364th GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 364th HumanoidCPU 0 103 329ms 5 mins ago 369th UnderKoen 🇳🇱 0 107 2,121ms 11 hours ago 370th kg583 🇺🇸 0 110 14ms 12 Jan 2026 371st retrohun 0 112 16ms 35 hours ago 372nd edsrzf 🇳🇿 0 114 30ms 5 hours ago 373rd prestosilver 🇺🇸 0 115 418ms 33 hours ago 374th GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 375th GolfingSuccess 🇬🇷 0 118 94ms 18 hours ago 376th emgordon154 0 119 56ms 20 hours ago 376th not-a-pokemon 0 119 15ms 9 hours ago 378th edsrzf 🇳🇿 0 127 58ms 14 hours ago 379th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 380th CaedenHarper 🇨🇦 0 129 446ms 4 days ago 381st Natanaelel 🇸🇪 0 130 360ms 2 May 2025 382nd Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 383rd albanian-laundromat 0 137 27ms 3 days ago 384th GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 385th GolfingSuccess 🇬🇷 0 140 94ms 3 hours ago 385th edsrzf 🇳🇿 0 140 29ms 15 mins ago 387th canissimia 🇦🇶 0 143 15ms 18 hours ago 388th emgordon154 0 148 68ms 2 hours ago 389th emgordon154 0 150 15ms 9 May 2025 389th albanian-laundromat 0 150 28ms 3 days ago 391st kasarino 0 157 12ms 7 hours ago 392nd JOrE20 0 159 69ms 14 Feb 2026 393rd emgordon154 0 166 1,766ms 3 hours ago 394th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 395th Shanethegamer 🇺🇸 0 197 1,442ms 1 Feb 2025 396th emgordon154 0 199 1,441ms 2 hours ago 397th voytxt 🇨🇿 0 200 1,425ms 6 Feb 2026 397th GolfingSuccess 🇬🇷 0 200 1,407ms 21 hours ago 399th albanian-laundromat 0 235 112ms a min ago 400th ovs-code 🇩🇪 0 237 107ms 2 hours ago First Prev 321–400 of 403 Next Last