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 232nd edsrzf 🇳🇿 0 66 7ms 9 hours ago 242nd GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 242nd tomh1012 0 67 429ms 26 hours ago 244th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 244th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 244th edsrzf 🇳🇿 0 68 113ms 25 May 2025 244th GolfingSuccess 🇬🇷 0 68 110ms 2 days ago 248th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 248th CaedenHarper 🇨🇦 0 69 486ms 2 days ago 250th JOrE20 0 70 41ms 13 Feb 2026 251st kg583 🇺🇸 0 71 27ms 1 Dec 2024 251st CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 251st GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 251st edsrzf 🇳🇿 0 71 14ms 8 May 2025 251st AlephSquirrel 0 71 13ms 9 May 2025 256th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 256th dokutan 0 72 62ms 8 Feb 2026 258th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 259th Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 259th sean-niemann 🇺🇸 0 75 103ms 8 May 2025 259th HumanoidCPU 0 75 112ms 2 hours ago 262nd GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 262nd fuzzylojik-golf 🇺🇸 0 76 104ms 37 hours ago 262nd edsrzf 🇳🇿 0 76 131ms 28 hours ago 262nd emgordon154 0 76 115ms 9 hours ago 266th rucin93 🇵🇱 0 77 130ms 8 May 2025 266th ovs-code 🇩🇪 0 77 81ms 30 May 2025 266th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 269th saito-ta 🇯🇵 0 78 4ms 10 May 2025 269th rhdqor213 0 78 4ms 10 May 2025 269th albanian-laundromat 0 78 100ms 3 days ago 272nd GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 273rd sean-niemann 🇺🇸 0 80 455ms 8 May 2025 274th kumavale 0 81 156ms 26 Nov 2025 274th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 274th albanian-laundromat 0 81 45ms 3 days ago 274th fuzzylojik-golf 🇺🇸 0 81 9ms 5 mins ago 278th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 278th emgordon154 0 82 162ms 14 Feb 2026 278th emgordon154 0 82 518ms 11 hours ago 281st Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 281st edsrzf 🇳🇿 0 83 414ms 9 Jul 2025 281st Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 281st fantaize 0 83 156ms 14 days ago 281st GolfingSuccess 🇬🇷 0 83 33ms 11 hours ago 281st MeWhenI 🇻🇦 0 83 229ms 2 hours ago 287th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 287th ovs-code 🇩🇪 0 84 12ms 10 May 2025 287th fuzzylojik-golf 🇺🇸 0 84 444ms 37 hours ago 290th edsrzf 🇳🇿 0 85 42ms 8 May 2025 290th edsrzf 🇳🇿 0 85 18ms 9 May 2025 290th error256 0 85 18ms 10 May 2025 290th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 290th KasperKivimaeki 🇫🇮 0 85 12ms 7 hours ago 295th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 295th kg583 🇺🇸 0 86 39ms 16 Feb 2025 295th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 295th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 295th edsrzf 🇳🇿 0 86 155ms 9 May 2025 295th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 295th GolfingSuccess 🇬🇷 0 86 8ms 12 Nov 2025 295th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 295th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 295th elgan65536 🇺🇸 0 86 168ms 24 days ago 295th CaedenHarper 🇨🇦 0 86 399ms 3 days ago 295th CaedenHarper 🇨🇦 0 86 153ms 2 days ago 295th edsrzf 🇳🇿 0 86 414ms 10 hours ago 295th edsrzf 🇳🇿 0 86 8ms 3 hours ago 309th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 309th GolfingSuccess 🇬🇷 0 87 18ms 8 May 2025 309th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 309th albanian-laundromat 0 87 1,424ms 3 days ago 309th Yax42 🇫🇷 0 87 2,430ms 20 hours ago 314th GolfingSuccess 🇬🇷 0 88 5ms 12 Nov 2025 314th kg583 🇺🇸 0 88 23ms 12 Feb 2026 314th fuzzylojik-golf 🇺🇸 0 88 152ms 35 hours ago 317th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 317th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 317th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 317th CaedenHarper 🇨🇦 0 89 103ms 2 days ago First Prev 241–320 of 380 Next Last