The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 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 240th tomh1012 0 67 429ms 25 hours ago 242nd Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 242nd sean-niemann 🇺🇸 0 68 131ms 8 May 2025 242nd edsrzf 🇳🇿 0 68 113ms 25 May 2025 242nd GolfingSuccess 🇬🇷 0 68 110ms 2 days ago 246th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 246th CaedenHarper 🇨🇦 0 69 486ms 2 days ago 248th JOrE20 0 70 41ms 13 Feb 2026 249th kg583 🇺🇸 0 71 27ms 1 Dec 2024 249th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 249th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 249th edsrzf 🇳🇿 0 71 14ms 8 May 2025 249th AlephSquirrel 0 71 13ms 9 May 2025 254th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 254th dokutan 0 72 62ms 8 Feb 2026 256th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 257th Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 257th sean-niemann 🇺🇸 0 75 103ms 8 May 2025 257th HumanoidCPU 0 75 112ms 91 mins ago 260th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 260th fuzzylojik-golf 🇺🇸 0 76 104ms 36 hours ago 260th edsrzf 🇳🇿 0 76 131ms 27 hours ago 260th emgordon154 0 76 115ms 8 hours ago 264th rucin93 🇵🇱 0 77 130ms 8 May 2025 264th ovs-code 🇩🇪 0 77 81ms 30 May 2025 264th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 267th saito-ta 🇯🇵 0 78 4ms 10 May 2025 267th rhdqor213 0 78 4ms 10 May 2025 267th albanian-laundromat 0 78 100ms 3 days ago 270th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 271st sean-niemann 🇺🇸 0 80 455ms 8 May 2025 272nd kumavale 0 81 156ms 26 Nov 2025 272nd Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 272nd albanian-laundromat 0 81 45ms 3 days ago 275th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 275th emgordon154 0 82 162ms 14 Feb 2026 275th emgordon154 0 82 518ms 10 hours ago 278th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 278th edsrzf 🇳🇿 0 83 414ms 9 Jul 2025 278th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 278th fantaize 0 83 156ms 14 days ago 278th GolfingSuccess 🇬🇷 0 83 33ms 9 hours ago 278th MeWhenI 🇻🇦 0 83 229ms 57 mins ago 284th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 284th ovs-code 🇩🇪 0 84 12ms 10 May 2025 284th fuzzylojik-golf 🇺🇸 0 84 444ms 36 hours ago 287th edsrzf 🇳🇿 0 85 42ms 8 May 2025 287th edsrzf 🇳🇿 0 85 18ms 9 May 2025 287th error256 0 85 18ms 10 May 2025 287th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 287th KasperKivimaeki 🇫🇮 0 85 12ms 5 hours ago 287th fuzzylojik-golf 🇺🇸 0 85 11ms 44 mins ago 293rd Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 293rd kg583 🇺🇸 0 86 39ms 16 Feb 2025 293rd GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 293rd GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 293rd edsrzf 🇳🇿 0 86 155ms 9 May 2025 293rd sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 293rd GolfingSuccess 🇬🇷 0 86 8ms 12 Nov 2025 293rd MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 293rd GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 293rd elgan65536 🇺🇸 0 86 168ms 24 days ago 293rd CaedenHarper 🇨🇦 0 86 399ms 3 days ago 293rd CaedenHarper 🇨🇦 0 86 153ms 2 days ago 293rd edsrzf 🇳🇿 0 86 414ms 9 hours ago 293rd edsrzf 🇳🇿 0 86 8ms 2 hours ago 307th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 307th GolfingSuccess 🇬🇷 0 87 18ms 8 May 2025 307th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 307th albanian-laundromat 0 87 1,424ms 3 days ago 307th Yax42 🇫🇷 0 87 2,430ms 18 hours ago 312th GolfingSuccess 🇬🇷 0 88 5ms 12 Nov 2025 312th kg583 🇺🇸 0 88 23ms 12 Feb 2026 312th fuzzylojik-golf 🇺🇸 0 88 152ms 34 hours ago 315th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 315th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 315th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 315th CaedenHarper 🇨🇦 0 89 103ms 2 days ago 315th emgordon154 0 89 400ms 10 hours ago 320th Yax42 🇫🇷 0 90 13ms 18 hours ago First Prev 241–320 of 378 Next Last