The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 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 Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 321st dokutan 0 72 62ms 8 Feb 2026 323rd GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 323rd GolfingSuccess 🇬🇷 0 73 8ms 3 days ago 325th not-a-pokemon 0 74 15ms 3 days ago 326th Shanethegamer 🇺🇸 0 75 107ms 26 Nov 2024 326th sean-niemann 🇺🇸 0 75 106ms 8 May 2025 326th HumanoidCPU 0 75 110ms 4 days ago 326th MeWhenI 🇻🇦 0 75 102ms 2 days ago 330th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 330th fuzzylojik-golf 🇺🇸 0 76 99ms 5 days ago 330th edsrzf 🇳🇿 0 76 131ms 5 days ago 330th emgordon154 0 76 115ms 4 days ago 334th rucin93 🇵🇱 0 77 130ms 8 May 2025 334th ovs-code 🇩🇪 0 77 78ms 30 May 2025 334th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 334th edsrzf 🇳🇿 0 77 7ms 3 days ago 334th GolfingSuccess 🇬🇷 0 77 8ms 3 days ago 334th Steffan153 🇫🇮 0 77 7ms 2 days ago 340th saito-ta 🇯🇵 0 78 4ms 10 May 2025 340th rhdqor213 0 78 4ms 10 May 2025 340th albanian-laundromat 0 78 98ms 7 days ago 340th fuzzylojik-golf 🇺🇸 0 78 8ms 3 days ago 340th edsrzf 🇳🇿 0 78 425ms 3 days ago 345th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 345th madex 🇩🇪 0 79 110ms 18 hours ago 347th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 348th kumavale 0 81 170ms 26 Nov 2025 348th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 348th albanian-laundromat 0 81 45ms 7 days ago 348th fuzzylojik-golf 🇺🇸 0 81 9ms 3 days ago 348th stefangimmillaro 0 81 44ms 3 days ago 348th KasperKivimaeki 🇫🇮 0 81 5ms 39 hours ago 354th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 354th emgordon154 0 82 170ms 14 Feb 2026 354th emgordon154 0 82 452ms 4 days ago 354th edsrzf 🇳🇿 0 82 167ms 3 days ago 354th GolfingSuccess 🇬🇷 0 82 17ms 2 days ago 359th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 359th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 359th fantaize 0 83 163ms 18 days ago 359th GolfingSuccess 🇬🇷 0 83 33ms 4 days ago 359th MeWhenI 🇻🇦 0 83 229ms 4 days ago 359th KrausRaus 🇺🇸 0 83 13ms 45 hours ago 359th madex 🇩🇪 0 83 111ms 18 hours ago 366th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 366th ovs-code 🇩🇪 0 84 12ms 10 May 2025 366th fuzzylojik-golf 🇺🇸 0 84 444ms 5 days ago 366th dokutan 0 84 417ms 2 days ago 370th edsrzf 🇳🇿 0 85 42ms 8 May 2025 370th edsrzf 🇳🇿 0 85 17ms 9 May 2025 370th error256 0 85 18ms 10 May 2025 370th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 370th HumanoidCPU 0 85 434ms 3 days ago 370th HumanoidCPU 0 85 419ms 2 days ago 370th madex 🇩🇪 0 85 72ms 19 hours ago 377th Shanethegamer 🇺🇸 0 86 158ms 17 Dec 2024 377th kg583 🇺🇸 0 86 39ms 16 Feb 2025 377th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 377th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 377th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 377th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 377th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 377th elgan65536 🇺🇸 0 86 184ms 1 Mar 2026 377th CaedenHarper 🇨🇦 0 86 399ms 7 days ago 377th CaedenHarper 🇨🇦 0 86 154ms 6 days ago 377th edsrzf 🇳🇿 0 86 414ms 4 days ago 377th emgordon154 0 86 406ms 3 days ago 377th GolfingSuccess 🇬🇷 0 86 19ms 3 days ago 377th Steffan153 🇫🇮 0 86 390ms 2 days ago 377th Steffan153 🇫🇮 0 86 19ms 2 days ago 377th stefangimmillaro 0 86 154ms 2 days ago 393rd Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 393rd Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 393rd albanian-laundromat 0 87 1,424ms 7 days ago 393rd Yax42 🇫🇷 0 87 2,340ms 4 days ago 393rd Steffan153 🇫🇮 0 87 180ms 2 days ago 393rd Steffan153 🇫🇮 0 87 4ms 2 days ago 393rd roelderickx 0 87 1,609ms 2 days ago 400th kg583 🇺🇸 0 88 23ms 12 Feb 2026 First Prev 321–400 of 501 Next Last