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 DialFrost 🇸🇬 0 94 13ms 10 May 2025 401st edsrzf 🇳🇿 0 94 21ms 42 hours ago 403rd Yax42 🇫🇷 0 95 389ms 2 days ago 404th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 404th HumanoidCPU 0 96 166ms 2 days ago 406th HumanoidCPU 0 97 7ms 12 hours ago 407th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 408th snydej 0 99 43ms 22 Nov 2024 408th albanian-laundromat 0 99 343ms 5 days ago 408th dokutan 0 99 409ms 2 days ago 408th dokutan 0 99 12ms 4 hours ago 412th dokutan 0 100 19ms 2 days ago 412th ovs-code 🇩🇪 0 100 160ms 21 hours ago 414th HumanoidCPU 0 101 361ms 39 hours ago 414th HumanoidCPU 0 101 382ms 37 hours ago 416th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 416th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 416th edsrzf 🇳🇿 0 102 295ms 9 May 2025 416th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 416th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 416th kg583 🇺🇸 0 102 13ms 25 Jan 2026 416th CaedenHarper 🇨🇦 0 102 301ms 5 days ago 416th fuzzylojik-golf 🇺🇸 0 102 292ms 3 days ago 416th emgordon154 0 102 274ms 2 days ago 416th edsrzf 🇳🇿 0 102 341ms 28 hours ago 416th Steffan153 🇫🇮 0 102 338ms 21 hours ago 416th Steffan153 🇫🇮 0 102 284ms 17 hours ago 416th MeWhenI 🇻🇦 0 102 287ms 4 hours ago 429th lukechampine 0 103 301ms 7 Jun 2025 429th chris124567 0 103 294ms 8 Jun 2025 429th albanian-laundromat 0 103 270ms 16 Dec 2025 429th GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 429th HumanoidCPU 0 103 329ms 37 hours ago 434th madex 🇩🇪 0 104 226ms 6 hours ago 435th UnderKoen 🇳🇱 0 107 2,121ms 2 days ago 436th HumanoidCPU 0 108 13ms 13 hours ago 437th edsrzf 🇳🇿 0 109 21ms 31 hours ago 437th emgordon154 0 109 84ms 17 hours ago 439th Steffan153 🇫🇮 0 110 28ms 20 hours ago 439th edsrzf 🇳🇿 0 110 31ms 19 hours ago 441st GolfingSuccess 🇬🇷 0 111 107ms 35 hours ago 442nd retrohun 0 112 16ms 3 days ago 442nd edsrzf 🇳🇿 0 112 27ms 33 hours ago 444th prestosilver 🇺🇸 0 115 418ms 2 days ago 444th HumanoidCPU 0 115 260ms 36 hours ago 446th GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 447th not-a-pokemon 0 119 15ms 46 hours ago 448th edsrzf 🇳🇿 0 127 58ms 2 days ago 448th Steffan153 🇫🇮 0 127 57ms 17 hours ago 450th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 451st CaedenHarper 🇨🇦 0 129 446ms 5 days ago 452nd Natanaelel 🇸🇪 0 130 360ms 2 May 2025 452nd madex 🇩🇪 0 130 412ms 6 hours ago 454th edsrzf 🇳🇿 0 134 22ms 36 hours ago 455th GolfingSuccess 🇬🇷 0 135 80ms 2 hours ago 456th Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 457th albanian-laundromat 0 137 27ms 5 days ago 458th GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 459th dokutan 0 141 287ms 3 hours ago 460th canissimia 🇦🇶 0 143 15ms 2 days ago 461st emgordon154 0 150 15ms 9 May 2025 461st albanian-laundromat 0 150 28ms 5 days ago 463rd kasarino 0 157 12ms 44 hours ago 464th dokutan 0 158 74ms 4 hours ago 465th JOrE20 0 159 69ms 14 Feb 2026 466th emgordon154 0 162 1,822ms 33 hours ago 467th RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 468th Shanethegamer 🇺🇸 0 197 1,504ms 1 Feb 2025 469th emgordon154 0 199 1,509ms 39 hours ago 470th voytxt 🇨🇿 0 200 1,471ms 6 Feb 2026 470th GolfingSuccess 🇬🇷 0 200 1,564ms 2 days ago 470th HumanoidCPU 0 200 408ms 13 hours ago 473rd albanian-laundromat 0 235 112ms 37 hours ago 474th ovs-code 🇩🇪 0 237 107ms 39 hours ago 475th albanian-laundromat 0 243 15ms 5 days ago 476th JOrE20 0 381 2,653ms 29 Dec 2025 477th CaedenHarper 🇨🇦 0 853 550ms 4 days ago First Prev 401–477 of 477