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 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 318th emgordon154 0 76 115ms 2 days ago 322nd rucin93 🇵🇱 0 77 130ms 8 May 2025 322nd ovs-code 🇩🇪 0 77 81ms 30 May 2025 322nd Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 322nd edsrzf 🇳🇿 0 77 7ms 39 hours ago 322nd GolfingSuccess 🇬🇷 0 77 8ms 37 hours ago 322nd Steffan153 🇫🇮 0 77 7ms 14 hours ago 328th saito-ta 🇯🇵 0 78 4ms 10 May 2025 328th rhdqor213 0 78 4ms 10 May 2025 328th albanian-laundromat 0 78 98ms 5 days ago 328th fuzzylojik-golf 🇺🇸 0 78 8ms 44 hours ago 328th edsrzf 🇳🇿 0 78 425ms 38 hours ago 333rd GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 334th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 335th kumavale 0 81 170ms 26 Nov 2025 335th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 335th albanian-laundromat 0 81 45ms 5 days ago 335th fuzzylojik-golf 🇺🇸 0 81 9ms 45 hours ago 335th stefangimmillaro 0 81 44ms 32 hours ago 340th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 340th emgordon154 0 82 170ms 14 Feb 2026 340th emgordon154 0 82 454ms 2 days ago 340th edsrzf 🇳🇿 0 82 167ms 33 hours ago 340th GolfingSuccess 🇬🇷 0 82 17ms 7 hours ago 345th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 345th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 345th fantaize 0 83 163ms 16 days ago 345th GolfingSuccess 🇬🇷 0 83 33ms 2 days ago 345th MeWhenI 🇻🇦 0 83 229ms 47 hours ago 350th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 350th ovs-code 🇩🇪 0 84 12ms 10 May 2025 350th fuzzylojik-golf 🇺🇸 0 84 444ms 3 days ago 350th KasperKivimaeki 🇫🇮 0 84 12ms 41 hours ago 350th emgordon154 0 84 29ms 10 hours ago 350th dokutan 0 84 417ms 41 mins ago 356th edsrzf 🇳🇿 0 85 42ms 8 May 2025 356th edsrzf 🇳🇿 0 85 18ms 9 May 2025 356th error256 0 85 18ms 10 May 2025 356th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 356th HumanoidCPU 0 85 434ms 33 hours ago 356th HumanoidCPU 0 85 419ms 9 hours ago 362nd Shanethegamer 🇺🇸 0 86 158ms 17 Dec 2024 362nd kg583 🇺🇸 0 86 39ms 16 Feb 2025 362nd GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 362nd GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 362nd sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 362nd MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 362nd GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 362nd elgan65536 🇺🇸 0 86 184ms 26 days ago 362nd CaedenHarper 🇨🇦 0 86 399ms 5 days ago 362nd CaedenHarper 🇨🇦 0 86 154ms 4 days ago 362nd edsrzf 🇳🇿 0 86 414ms 2 days ago 362nd emgordon154 0 86 406ms 42 hours ago 362nd GolfingSuccess 🇬🇷 0 86 19ms 34 hours ago 362nd Steffan153 🇫🇮 0 86 390ms 19 hours ago 362nd Steffan153 🇫🇮 0 86 19ms 17 hours ago 362nd stefangimmillaro 0 86 154ms 4 hours ago 378th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 378th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 378th albanian-laundromat 0 87 1,424ms 5 days ago 378th Yax42 🇫🇷 0 87 2,340ms 2 days ago 378th Steffan153 🇫🇮 0 87 180ms 18 hours ago 378th Steffan153 🇫🇮 0 87 4ms 14 hours ago 384th kg583 🇺🇸 0 88 23ms 12 Feb 2026 384th fuzzylojik-golf 🇺🇸 0 88 154ms 3 days ago 386th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 386th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 386th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 386th CaedenHarper 🇨🇦 0 89 103ms 4 days ago 386th roelderickx 0 89 1,614ms 23 hours ago 386th madex 🇩🇪 0 89 174ms 12 hours ago 386th edsrzf 🇳🇿 0 89 334ms 3 hours ago 386th Yax42 🇫🇷 0 89 13ms 105 mins ago 386th dokutan 0 89 476ms 42 mins ago 395th namelessiw 0 92 504ms 10 Oct 2025 395th fuzzylojik-golf 🇺🇸 0 92 383ms 3 days ago 395th madex 🇩🇪 0 92 12ms 2 days ago 398th CaedenHarper 🇨🇦 0 93 13ms 5 days ago 399th DialFrost 🇸🇬 0 94 13ms 10 May 2025 399th edsrzf 🇳🇿 0 94 187ms 17 May 2025 First Prev 321–400 of 476 Next Last