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 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 395th Yax42 🇫🇷 0 89 13ms 28 hours ago 395th dokutan 0 89 476ms 27 hours ago 403rd namelessiw 0 92 504ms 10 Oct 2025 403rd fuzzylojik-golf 🇺🇸 0 92 383ms 4 days ago 403rd madex 🇩🇪 0 92 12ms 3 days ago 406th edsrzf 🇳🇿 0 93 187ms 17 May 2025 406th CaedenHarper 🇨🇦 0 93 13ms 6 days ago 406th DialFrost 🇸🇬 0 93 13ms 19 hours ago 409th 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 36 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 3 days ago 415th dokutan 0 99 12ms 27 hours ago 419th ovs-code 🇩🇪 0 100 160ms 45 hours ago 420th HumanoidCPU 0 101 361ms 2 days ago 420th HumanoidCPU 0 101 382ms 2 days ago 422nd sean-niemann 🇺🇸 0 102 286ms 8 May 2025 422nd Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 422nd edsrzf 🇳🇿 0 102 295ms 9 May 2025 422nd GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 422nd ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 422nd kg583 🇺🇸 0 102 13ms 25 Jan 2026 422nd CaedenHarper 🇨🇦 0 102 301ms 6 days ago 422nd fuzzylojik-golf 🇺🇸 0 102 292ms 4 days ago 422nd emgordon154 0 102 274ms 3 days ago 422nd edsrzf 🇳🇿 0 102 341ms 2 days ago 422nd Steffan153 🇫🇮 0 102 338ms 45 hours ago 422nd Steffan153 🇫🇮 0 102 284ms 41 hours ago 422nd MeWhenI 🇻🇦 0 102 287ms 28 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 30 hours ago 441st UnderKoen 🇳🇱 0 107 2,121ms 3 days ago 442nd HumanoidCPU 0 108 13ms 36 hours ago 443rd edsrzf 🇳🇿 0 109 21ms 2 days ago 443rd emgordon154 0 109 84ms 41 hours ago 445th Steffan153 🇫🇮 0 110 28ms 44 hours ago 445th edsrzf 🇳🇿 0 110 31ms 43 hours ago 447th GolfingSuccess 🇬🇷 0 111 107ms 2 days ago 448th retrohun 0 112 16ms 3 days ago 448th edsrzf 🇳🇿 0 112 27ms 2 days ago 450th prestosilver 🇺🇸 0 115 418ms 3 days ago 450th HumanoidCPU 0 115 260ms 2 days ago 452nd GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 453rd not-a-pokemon 0 119 15ms 2 days ago 454th edsrzf 🇳🇿 0 127 58ms 3 days ago 454th Steffan153 🇫🇮 0 127 57ms 41 hours ago 456th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 457th CaedenHarper 🇨🇦 0 129 446ms 6 days ago 458th Natanaelel 🇸🇪 0 130 360ms 2 May 2025 458th madex 🇩🇪 0 130 412ms 30 hours ago 460th edsrzf 🇳🇿 0 134 22ms 2 days ago 461st GolfingSuccess 🇬🇷 0 135 80ms 25 hours ago 462nd Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 463rd albanian-laundromat 0 137 27ms 6 days ago 464th GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 465th dokutan 0 140 279ms 15 hours ago 466th canissimia 🇦🇶 0 143 15ms 3 days ago 467th emgordon154 0 150 15ms 9 May 2025 467th albanian-laundromat 0 150 28ms 6 days ago 469th kasarino 0 157 12ms 2 days ago 470th dokutan 0 158 74ms 27 hours ago 471st JOrE20 0 159 69ms 14 Feb 2026 472nd emgordon154 0 162 1,822ms 2 days ago 473rd RYSF13 🇨🇳 0 168 13ms 25 Jun 2025 474th Shanethegamer 🇺🇸 0 197 1,504ms 1 Feb 2025 475th emgordon154 0 199 1,509ms 2 days ago 476th voytxt 🇨🇿 0 200 1,471ms 6 Feb 2026 476th GolfingSuccess 🇬🇷 0 200 1,564ms 3 days ago 476th HumanoidCPU 0 200 408ms 37 hours ago 479th albanian-laundromat 0 214 120ms 18 hours ago 480th ovs-code 🇩🇪 0 237 107ms 2 days ago First Prev 401–480 of 483 Next Last