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 321st rucin93 🇵🇱 0 77 130ms 8 May 2025 321st ovs-code 🇩🇪 0 77 81ms 30 May 2025 321st Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 321st edsrzf 🇳🇿 0 77 7ms 38 hours ago 321st GolfingSuccess 🇬🇷 0 77 8ms 36 hours ago 321st Steffan153 🇫🇮 0 77 7ms 13 hours ago 327th saito-ta 🇯🇵 0 78 4ms 10 May 2025 327th rhdqor213 0 78 4ms 10 May 2025 327th albanian-laundromat 0 78 98ms 5 days ago 327th fuzzylojik-golf 🇺🇸 0 78 8ms 43 hours ago 327th edsrzf 🇳🇿 0 78 425ms 36 hours ago 332nd GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 333rd sean-niemann 🇺🇸 0 80 455ms 8 May 2025 334th kumavale 0 81 170ms 26 Nov 2025 334th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 334th albanian-laundromat 0 81 45ms 5 days ago 334th fuzzylojik-golf 🇺🇸 0 81 9ms 43 hours ago 334th stefangimmillaro 0 81 44ms 30 hours ago 339th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 339th emgordon154 0 82 170ms 14 Feb 2026 339th emgordon154 0 82 454ms 2 days ago 339th edsrzf 🇳🇿 0 82 167ms 32 hours ago 339th GolfingSuccess 🇬🇷 0 82 17ms 5 hours ago 344th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 344th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 344th fantaize 0 83 163ms 16 days ago 344th GolfingSuccess 🇬🇷 0 83 33ms 2 days ago 344th MeWhenI 🇻🇦 0 83 229ms 45 hours ago 349th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 349th ovs-code 🇩🇪 0 84 12ms 10 May 2025 349th fuzzylojik-golf 🇺🇸 0 84 444ms 3 days ago 349th KasperKivimaeki 🇫🇮 0 84 12ms 39 hours ago 349th emgordon154 0 84 29ms 8 hours ago 354th edsrzf 🇳🇿 0 85 42ms 8 May 2025 354th edsrzf 🇳🇿 0 85 18ms 9 May 2025 354th error256 0 85 18ms 10 May 2025 354th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 354th HumanoidCPU 0 85 434ms 31 hours ago 354th HumanoidCPU 0 85 419ms 8 hours ago 360th Shanethegamer 🇺🇸 0 86 158ms 17 Dec 2024 360th kg583 🇺🇸 0 86 39ms 16 Feb 2025 360th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 360th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 360th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 360th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 360th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 360th elgan65536 🇺🇸 0 86 184ms 26 days ago 360th CaedenHarper 🇨🇦 0 86 399ms 5 days ago 360th CaedenHarper 🇨🇦 0 86 154ms 4 days ago 360th edsrzf 🇳🇿 0 86 414ms 2 days ago 360th emgordon154 0 86 406ms 41 hours ago 360th GolfingSuccess 🇬🇷 0 86 19ms 33 hours ago 360th Steffan153 🇫🇮 0 86 390ms 18 hours ago 360th Steffan153 🇫🇮 0 86 19ms 16 hours ago 360th stefangimmillaro 0 86 154ms 2 hours ago 376th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 376th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 376th albanian-laundromat 0 87 1,424ms 5 days ago 376th Yax42 🇫🇷 0 87 2,340ms 2 days ago 376th Steffan153 🇫🇮 0 87 180ms 16 hours ago 376th Steffan153 🇫🇮 0 87 4ms 13 hours ago 382nd kg583 🇺🇸 0 88 23ms 12 Feb 2026 382nd fuzzylojik-golf 🇺🇸 0 88 154ms 3 days ago 384th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 384th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 384th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 384th CaedenHarper 🇨🇦 0 89 103ms 4 days ago 384th roelderickx 0 89 1,614ms 21 hours ago 384th madex 🇩🇪 0 89 174ms 10 hours ago 384th edsrzf 🇳🇿 0 89 334ms 92 mins ago 384th Yax42 🇫🇷 0 89 13ms 11 mins ago 392nd namelessiw 0 92 504ms 10 Oct 2025 392nd fuzzylojik-golf 🇺🇸 0 92 383ms 3 days ago 392nd madex 🇩🇪 0 92 12ms 2 days ago 395th CaedenHarper 🇨🇦 0 93 13ms 5 days ago 396th DialFrost 🇸🇬 0 94 13ms 10 May 2025 396th edsrzf 🇳🇿 0 94 187ms 17 May 2025 396th edsrzf 🇳🇿 0 94 21ms 37 hours ago 399th Yax42 🇫🇷 0 95 389ms 2 days ago 400th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 First Prev 321–400 of 469 Next Last