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 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 401st namelessiw 0 92 504ms 10 Oct 2025 401st fuzzylojik-golf 🇺🇸 0 92 383ms 3 days ago 401st madex 🇩🇪 0 92 12ms 3 days ago 404th edsrzf 🇳🇿 0 93 187ms 17 May 2025 404th CaedenHarper 🇨🇦 0 93 13ms 6 days ago 404th DialFrost 🇸🇬 0 93 13ms 4 hours ago 407th edsrzf 🇳🇿 0 94 21ms 2 days ago 408th Yax42 🇫🇷 0 95 389ms 3 days ago 409th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 409th HumanoidCPU 0 96 166ms 2 days ago 411th HumanoidCPU 0 97 7ms 21 hours ago 412th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 413th snydej 0 99 43ms 22 Nov 2024 413th albanian-laundromat 0 99 343ms 6 days ago 413th dokutan 0 99 409ms 2 days ago 413th dokutan 0 99 12ms 13 hours ago 417th dokutan 0 100 19ms 2 days ago 417th ovs-code 🇩🇪 0 100 160ms 31 hours ago 419th HumanoidCPU 0 101 361ms 2 days ago 419th HumanoidCPU 0 101 382ms 46 hours ago 421st sean-niemann 🇺🇸 0 102 286ms 8 May 2025 421st Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 421st edsrzf 🇳🇿 0 102 295ms 9 May 2025 421st GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 421st ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 421st kg583 🇺🇸 0 102 13ms 25 Jan 2026 421st CaedenHarper 🇨🇦 0 102 301ms 6 days ago 421st fuzzylojik-golf 🇺🇸 0 102 292ms 3 days ago 421st emgordon154 0 102 274ms 2 days ago 421st edsrzf 🇳🇿 0 102 341ms 38 hours ago 421st Steffan153 🇫🇮 0 102 338ms 30 hours ago 421st Steffan153 🇫🇮 0 102 284ms 27 hours ago 421st MeWhenI 🇻🇦 0 102 287ms 13 hours ago 434th lukechampine 0 103 301ms 7 Jun 2025 434th chris124567 0 103 294ms 8 Jun 2025 434th albanian-laundromat 0 103 270ms 16 Dec 2025 434th GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 434th HumanoidCPU 0 103 329ms 46 hours ago 439th madex 🇩🇪 0 104 226ms 15 hours ago 440th UnderKoen 🇳🇱 0 107 2,121ms 2 days ago 441st HumanoidCPU 0 108 13ms 22 hours ago 442nd edsrzf 🇳🇿 0 109 21ms 40 hours ago 442nd emgordon154 0 109 84ms 26 hours ago 444th Steffan153 🇫🇮 0 110 28ms 29 hours ago 444th edsrzf 🇳🇿 0 110 31ms 28 hours ago 446th GolfingSuccess 🇬🇷 0 111 107ms 44 hours ago 447th retrohun 0 112 16ms 3 days ago 447th edsrzf 🇳🇿 0 112 27ms 42 hours ago 449th prestosilver 🇺🇸 0 115 418ms 3 days ago 449th HumanoidCPU 0 115 260ms 46 hours ago 451st GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 452nd not-a-pokemon 0 119 15ms 2 days ago 453rd edsrzf 🇳🇿 0 127 58ms 2 days ago 453rd Steffan153 🇫🇮 0 127 57ms 26 hours ago 455th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 456th CaedenHarper 🇨🇦 0 129 446ms 6 days ago 457th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 457th madex 🇩🇪 0 130 412ms 15 hours ago 459th edsrzf 🇳🇿 0 134 22ms 45 hours ago 460th GolfingSuccess 🇬🇷 0 135 80ms 11 hours ago 461st Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 462nd albanian-laundromat 0 137 27ms 5 days ago 463rd GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 464th dokutan 0 140 279ms 79 mins ago 465th canissimia 🇦🇶 0 143 15ms 2 days ago 466th emgordon154 0 150 15ms 9 May 2025 466th albanian-laundromat 0 150 28ms 5 days ago 468th kasarino 0 157 12ms 2 days ago 469th dokutan 0 158 74ms 13 hours ago 470th JOrE20 0 159 69ms 14 Feb 2026 471st emgordon154 0 162 1,822ms 42 hours ago 472nd RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 473rd Shanethegamer 🇺🇸 0 197 1,504ms 1 Feb 2025 474th emgordon154 0 199 1,509ms 2 days ago 475th voytxt 🇨🇿 0 200 1,471ms 6 Feb 2026 475th GolfingSuccess 🇬🇷 0 200 1,564ms 2 days ago 475th HumanoidCPU 0 200 408ms 22 hours ago 478th albanian-laundromat 0 214 120ms 4 hours ago 479th ovs-code 🇩🇪 0 237 107ms 2 days ago 480th albanian-laundromat 0 243 15ms 5 days ago First Prev 401–480 of 482 Next Last