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 317th stefangimmillaro 0 81 46ms 16 hours ago 322nd GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 322nd emgordon154 0 82 159ms 14 Feb 2026 322nd emgordon154 0 82 454ms 40 hours ago 322nd edsrzf 🇳🇿 0 82 161ms 17 hours ago 326th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 326th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 326th fantaize 0 83 156ms 15 days ago 326th GolfingSuccess 🇬🇷 0 83 33ms 40 hours ago 326th MeWhenI 🇻🇦 0 83 229ms 31 hours ago 331st Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 331st ovs-code 🇩🇪 0 84 12ms 10 May 2025 331st fuzzylojik-golf 🇺🇸 0 84 444ms 2 days ago 331st KasperKivimaeki 🇫🇮 0 84 12ms 25 hours ago 335th edsrzf 🇳🇿 0 85 42ms 8 May 2025 335th edsrzf 🇳🇿 0 85 18ms 9 May 2025 335th error256 0 85 18ms 10 May 2025 335th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 335th HumanoidCPU 0 85 434ms 17 hours ago 340th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 340th kg583 🇺🇸 0 86 39ms 16 Feb 2025 340th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 340th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 340th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 340th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 340th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 340th elgan65536 🇺🇸 0 86 168ms 25 days ago 340th CaedenHarper 🇨🇦 0 86 399ms 4 days ago 340th CaedenHarper 🇨🇦 0 86 153ms 3 days ago 340th edsrzf 🇳🇿 0 86 414ms 39 hours ago 340th emgordon154 0 86 406ms 26 hours ago 340th GolfingSuccess 🇬🇷 0 86 19ms 18 hours ago 340th Steffan153 🇫🇮 0 86 390ms 3 hours ago 340th Steffan153 🇫🇮 0 86 19ms 100 mins ago 355th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 355th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 355th albanian-laundromat 0 87 1,424ms 4 days ago 355th Yax42 🇫🇷 0 87 2,430ms 2 days ago 355th Steffan153 🇫🇮 0 87 180ms 2 hours ago 360th kg583 🇺🇸 0 88 23ms 12 Feb 2026 360th fuzzylojik-golf 🇺🇸 0 88 152ms 2 days ago 362nd Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 362nd Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 362nd DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 362nd CaedenHarper 🇨🇦 0 89 103ms 3 days ago 362nd roelderickx 0 89 1,614ms 7 hours ago 367th Yax42 🇫🇷 0 90 13ms 2 days ago 368th GolfingSuccess 🇬🇷 0 91 14ms 13 Dec 2025 369th namelessiw 0 92 504ms 10 Oct 2025 369th fuzzylojik-golf 🇺🇸 0 92 383ms 2 days ago 369th madex 🇩🇪 0 92 12ms 44 hours ago 372nd CaedenHarper 🇨🇦 0 93 13ms 4 days ago 373rd DialFrost 🇸🇬 0 94 13ms 10 May 2025 373rd edsrzf 🇳🇿 0 94 187ms 17 May 2025 373rd edsrzf 🇳🇿 0 94 21ms 23 hours ago 376th Yax42 🇫🇷 0 95 389ms 2 days ago 377th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 377th HumanoidCPU 0 96 160ms 42 hours ago 379th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 380th snydej 0 99 43ms 22 Nov 2024 380th albanian-laundromat 0 99 343ms 4 days ago 380th dokutan 0 99 409ms 30 hours ago 383rd dokutan 0 100 19ms 30 hours ago 383rd ovs-code 🇩🇪 0 100 160ms 2 hours ago 385th HumanoidCPU 0 101 361ms 20 hours ago 385th HumanoidCPU 0 101 382ms 18 hours ago 387th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 387th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 387th edsrzf 🇳🇿 0 102 295ms 9 May 2025 387th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 387th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 387th CaedenHarper 🇨🇦 0 102 301ms 4 days ago 387th fuzzylojik-golf 🇺🇸 0 102 292ms 2 days ago 387th emgordon154 0 102 274ms 36 hours ago 387th edsrzf 🇳🇿 0 102 341ms 9 hours ago 387th Steffan153 🇫🇮 0 102 338ms 2 hours ago 397th lukechampine 0 103 301ms 7 Jun 2025 397th chris124567 0 103 294ms 8 Jun 2025 397th albanian-laundromat 0 103 270ms 16 Dec 2025 397th GolfingSuccess 🇬🇷 0 103 336ms 14 Jan 2026 First Prev 321–400 of 441 Next Last