The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 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 kumavale 0 81 156ms 26 Nov 2025 321st Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 321st albanian-laundromat 0 81 45ms 4 days ago 321st fuzzylojik-golf 🇺🇸 0 81 9ms 32 hours ago 321st stefangimmillaro 0 81 46ms 19 hours ago 326th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 326th emgordon154 0 82 159ms 14 Feb 2026 326th emgordon154 0 82 454ms 43 hours ago 326th edsrzf 🇳🇿 0 82 161ms 21 hours ago 330th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 330th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 330th fantaize 0 83 156ms 16 days ago 330th GolfingSuccess 🇬🇷 0 83 33ms 43 hours ago 330th MeWhenI 🇻🇦 0 83 229ms 34 hours ago 335th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 335th ovs-code 🇩🇪 0 84 12ms 10 May 2025 335th fuzzylojik-golf 🇺🇸 0 84 444ms 2 days ago 335th KasperKivimaeki 🇫🇮 0 84 12ms 28 hours ago 339th edsrzf 🇳🇿 0 85 42ms 8 May 2025 339th edsrzf 🇳🇿 0 85 18ms 9 May 2025 339th error256 0 85 18ms 10 May 2025 339th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 339th HumanoidCPU 0 85 434ms 20 hours ago 344th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 344th kg583 🇺🇸 0 86 39ms 16 Feb 2025 344th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 344th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 344th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 344th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 344th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 344th elgan65536 🇺🇸 0 86 168ms 25 days ago 344th CaedenHarper 🇨🇦 0 86 399ms 4 days ago 344th CaedenHarper 🇨🇦 0 86 153ms 3 days ago 344th edsrzf 🇳🇿 0 86 414ms 43 hours ago 344th emgordon154 0 86 406ms 29 hours ago 344th GolfingSuccess 🇬🇷 0 86 19ms 22 hours ago 344th Steffan153 🇫🇮 0 86 390ms 6 hours ago 344th Steffan153 🇫🇮 0 86 19ms 4 hours ago 359th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 359th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 359th albanian-laundromat 0 87 1,424ms 4 days ago 359th Yax42 🇫🇷 0 87 2,430ms 2 days ago 359th Steffan153 🇫🇮 0 87 180ms 5 hours ago 359th Steffan153 🇫🇮 0 87 4ms 119 mins ago 365th kg583 🇺🇸 0 88 23ms 12 Feb 2026 365th fuzzylojik-golf 🇺🇸 0 88 152ms 2 days ago 367th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 367th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 367th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 367th CaedenHarper 🇨🇦 0 89 103ms 3 days ago 367th roelderickx 0 89 1,614ms 10 hours ago 372nd Yax42 🇫🇷 0 90 13ms 2 days ago 373rd GolfingSuccess 🇬🇷 0 91 14ms 13 Dec 2025 374th namelessiw 0 92 504ms 10 Oct 2025 374th fuzzylojik-golf 🇺🇸 0 92 383ms 2 days ago 374th madex 🇩🇪 0 92 12ms 47 hours ago 377th CaedenHarper 🇨🇦 0 93 13ms 5 days ago 378th DialFrost 🇸🇬 0 94 13ms 10 May 2025 378th edsrzf 🇳🇿 0 94 187ms 17 May 2025 378th edsrzf 🇳🇿 0 94 21ms 26 hours ago 381st Yax42 🇫🇷 0 95 389ms 2 days ago 382nd GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 382nd HumanoidCPU 0 96 160ms 45 hours ago 384th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 385th snydej 0 99 43ms 22 Nov 2024 385th albanian-laundromat 0 99 343ms 4 days ago 385th dokutan 0 99 409ms 34 hours ago 388th dokutan 0 100 19ms 34 hours ago 388th ovs-code 🇩🇪 0 100 160ms 5 hours ago 390th HumanoidCPU 0 101 361ms 23 hours ago 390th HumanoidCPU 0 101 382ms 21 hours ago 392nd sean-niemann 🇺🇸 0 102 286ms 8 May 2025 392nd Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 392nd edsrzf 🇳🇿 0 102 295ms 9 May 2025 392nd GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 392nd ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 392nd CaedenHarper 🇨🇦 0 102 301ms 5 days ago 392nd fuzzylojik-golf 🇺🇸 0 102 292ms 2 days ago 392nd emgordon154 0 102 274ms 40 hours ago 392nd edsrzf 🇳🇿 0 102 341ms 12 hours ago First Prev 321–400 of 448 Next Last