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 234th Yax42 🇫🇷 0 66 484ms 2 days ago 234th fuzzylojik-golf 🇺🇸 0 66 456ms 38 hours ago 234th edsrzf 🇳🇿 0 66 7ms 11 hours ago 244th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 244th tomh1012 0 67 429ms 27 hours ago 246th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 246th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 246th edsrzf 🇳🇿 0 68 113ms 25 May 2025 246th GolfingSuccess 🇬🇷 0 68 110ms 2 days ago 250th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 250th CaedenHarper 🇨🇦 0 69 486ms 2 days ago 252nd JOrE20 0 70 41ms 13 Feb 2026 253rd kg583 🇺🇸 0 71 27ms 1 Dec 2024 253rd CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 253rd GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 253rd edsrzf 🇳🇿 0 71 14ms 8 May 2025 253rd AlephSquirrel 0 71 13ms 9 May 2025 258th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 258th dokutan 0 72 62ms 8 Feb 2026 258th fuzzylojik-golf 🇺🇸 0 72 1,385ms a min ago 261st GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 262nd Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 262nd sean-niemann 🇺🇸 0 75 103ms 8 May 2025 262nd HumanoidCPU 0 75 112ms 3 hours ago 265th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 265th fuzzylojik-golf 🇺🇸 0 76 104ms 38 hours ago 265th edsrzf 🇳🇿 0 76 131ms 29 hours ago 265th emgordon154 0 76 115ms 10 hours ago 269th rucin93 🇵🇱 0 77 130ms 8 May 2025 269th ovs-code 🇩🇪 0 77 81ms 30 May 2025 269th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 272nd saito-ta 🇯🇵 0 78 4ms 10 May 2025 272nd rhdqor213 0 78 4ms 10 May 2025 272nd albanian-laundromat 0 78 100ms 3 days ago 272nd fuzzylojik-golf 🇺🇸 0 78 8ms 56 mins ago 276th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 277th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 278th kumavale 0 81 156ms 26 Nov 2025 278th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 278th albanian-laundromat 0 81 45ms 3 days ago 278th fuzzylojik-golf 🇺🇸 0 81 9ms 82 mins ago 282nd GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 282nd emgordon154 0 82 159ms 14 Feb 2026 282nd emgordon154 0 82 518ms 12 hours ago 285th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 285th edsrzf 🇳🇿 0 83 414ms 9 Jul 2025 285th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 285th fantaize 0 83 156ms 14 days ago 285th GolfingSuccess 🇬🇷 0 83 33ms 12 hours ago 285th MeWhenI 🇻🇦 0 83 229ms 3 hours ago 291st Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 291st ovs-code 🇩🇪 0 84 12ms 10 May 2025 291st fuzzylojik-golf 🇺🇸 0 84 444ms 38 hours ago 294th edsrzf 🇳🇿 0 85 42ms 8 May 2025 294th edsrzf 🇳🇿 0 85 18ms 9 May 2025 294th error256 0 85 18ms 10 May 2025 294th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 294th KasperKivimaeki 🇫🇮 0 85 12ms 8 hours ago 299th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 299th kg583 🇺🇸 0 86 39ms 16 Feb 2025 299th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 299th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 299th edsrzf 🇳🇿 0 86 155ms 9 May 2025 299th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 299th GolfingSuccess 🇬🇷 0 86 8ms 12 Nov 2025 299th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 299th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 299th elgan65536 🇺🇸 0 86 168ms 24 days ago 299th CaedenHarper 🇨🇦 0 86 399ms 3 days ago 299th CaedenHarper 🇨🇦 0 86 153ms 2 days ago 299th edsrzf 🇳🇿 0 86 414ms 12 hours ago 299th edsrzf 🇳🇿 0 86 8ms 4 hours ago 313th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 313th GolfingSuccess 🇬🇷 0 87 18ms 8 May 2025 313th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 313th albanian-laundromat 0 87 1,424ms 3 days ago 313th Yax42 🇫🇷 0 87 2,430ms 21 hours ago 318th GolfingSuccess 🇬🇷 0 88 5ms 12 Nov 2025 318th kg583 🇺🇸 0 88 23ms 12 Feb 2026 318th fuzzylojik-golf 🇺🇸 0 88 152ms 36 hours ago First Prev 241–320 of 384 Next Last