The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 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 401st Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 401st Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 401st DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 401st CaedenHarper 🇨🇦 0 89 103ms 6 days ago 401st madex 🇩🇪 0 89 174ms 2 days ago 401st edsrzf 🇳🇿 0 89 334ms 42 hours ago 401st Yax42 🇫🇷 0 89 13ms 41 hours ago 401st dokutan 0 89 476ms 40 hours ago 409th solisolu 0 90 4ms 4 hours ago 410th namelessiw 0 92 504ms 10 Oct 2025 410th fuzzylojik-golf 🇺🇸 0 92 383ms 5 days ago 410th madex 🇩🇪 0 92 12ms 4 days ago 413th CaedenHarper 🇨🇦 0 93 13ms 7 days ago 413th DialFrost 🇸🇬 0 93 13ms 32 hours ago 415th edsrzf 🇳🇿 0 94 187ms 17 May 2025 415th edsrzf 🇳🇿 0 94 21ms 3 days ago 417th Yax42 🇫🇷 0 95 389ms 4 days ago 418th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 418th HumanoidCPU 0 96 166ms 4 days ago 420th HumanoidCPU 0 97 7ms 2 days ago 421st Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 422nd snydej 0 99 43ms 22 Nov 2024 422nd albanian-laundromat 0 99 343ms 7 days ago 422nd dokutan 0 99 409ms 3 days ago 422nd dokutan 0 99 12ms 40 hours ago 426th dokutan 0 100 19ms 3 days ago 426th ovs-code 🇩🇪 0 100 160ms 2 days ago 428th HumanoidCPU 0 101 361ms 3 days ago 428th HumanoidCPU 0 101 382ms 3 days ago 430th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 430th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 430th edsrzf 🇳🇿 0 102 295ms 9 May 2025 430th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 430th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 430th CaedenHarper 🇨🇦 0 102 301ms 7 days ago 430th fuzzylojik-golf 🇺🇸 0 102 292ms 5 days ago 430th emgordon154 0 102 274ms 3 days ago 430th edsrzf 🇳🇿 0 102 341ms 2 days ago 430th Steffan153 🇫🇮 0 102 338ms 2 days ago 430th Steffan153 🇫🇮 0 102 284ms 2 days ago 430th MeWhenI 🇻🇦 0 102 287ms 41 hours ago 442nd lukechampine 0 103 301ms 7 Jun 2025 442nd chris124567 0 103 294ms 8 Jun 2025 442nd albanian-laundromat 0 103 270ms 16 Dec 2025 442nd GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 442nd HumanoidCPU 0 103 329ms 3 days ago 442nd Jacob385 0 103 411ms 9 hours ago 448th madex 🇩🇪 0 104 226ms 43 hours ago 449th madex 🇩🇪 0 106 334ms 7 hours ago 450th UnderKoen 🇳🇱 0 107 2,121ms 3 days ago 451st HumanoidCPU 0 108 13ms 2 days ago 452nd edsrzf 🇳🇿 0 109 21ms 2 days ago 452nd emgordon154 0 109 84ms 2 days ago 454th kg583 🇺🇸 0 110 14ms 12 Jan 2026 454th Steffan153 🇫🇮 0 110 28ms 2 days ago 454th edsrzf 🇳🇿 0 110 31ms 2 days ago 457th GolfingSuccess 🇬🇷 0 111 107ms 3 days ago 458th retrohun 0 112 16ms 4 days ago 458th edsrzf 🇳🇿 0 112 27ms 2 days ago 458th madex 🇩🇪 0 112 1,387ms 7 hours ago 461st prestosilver 🇺🇸 0 115 418ms 4 days ago 461st HumanoidCPU 0 115 260ms 3 days ago 463rd GolfingSuccess 🇬🇷 0 117 34ms 25 Dec 2025 464th madex 🇩🇪 0 118 17ms 7 hours ago 465th not-a-pokemon 0 119 15ms 3 days ago 466th madex 🇩🇪 0 121 366ms 7 hours ago 467th edsrzf 🇳🇿 0 127 58ms 3 days ago 467th Steffan153 🇫🇮 0 127 57ms 2 days ago 469th saito-ta 🇯🇵 0 128 1,990ms 8 May 2025 470th CaedenHarper 🇨🇦 0 129 446ms 7 days ago 471st Natanaelel 🇸🇪 0 130 360ms 2 May 2025 471st madex 🇩🇪 0 130 412ms 43 hours ago 471st madex 🇩🇪 0 130 269ms 8 hours ago 474th edsrzf 🇳🇿 0 134 22ms 3 days ago 475th GolfingSuccess 🇬🇷 0 135 80ms 38 hours ago 476th Shanethegamer 🇺🇸 0 136 315ms 26 Nov 2024 477th albanian-laundromat 0 137 27ms 6 days ago 478th GolfingSuccess 🇬🇷 0 138 336ms 8 May 2025 479th dokutan 0 140 279ms 28 hours ago 480th canissimia 🇦🇶 0 143 15ms 3 days ago First Prev 401–480 of 499 Next Last