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 39 hours ago 234th edsrzf 🇳🇿 0 66 7ms 11 hours ago 244th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 244th tomh1012 0 67 429ms 28 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 246th fuzzylojik-golf 🇺🇸 0 68 1,320ms 39 mins ago 251st GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 251st CaedenHarper 🇨🇦 0 69 486ms 2 days ago 253rd JOrE20 0 70 41ms 13 Feb 2026 254th kg583 🇺🇸 0 71 27ms 1 Dec 2024 254th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 254th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 254th edsrzf 🇳🇿 0 71 14ms 8 May 2025 254th AlephSquirrel 0 71 13ms 9 May 2025 259th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 259th dokutan 0 72 62ms 8 Feb 2026 261st GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 262nd not-a-pokemon 0 74 15ms 14 mins ago 263rd Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 263rd sean-niemann 🇺🇸 0 75 103ms 8 May 2025 263rd HumanoidCPU 0 75 112ms 4 hours ago 266th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 266th fuzzylojik-golf 🇺🇸 0 76 99ms 39 hours ago 266th edsrzf 🇳🇿 0 76 131ms 30 hours ago 266th emgordon154 0 76 115ms 11 hours ago 270th rucin93 🇵🇱 0 77 130ms 8 May 2025 270th ovs-code 🇩🇪 0 77 81ms 30 May 2025 270th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 273rd saito-ta 🇯🇵 0 78 4ms 10 May 2025 273rd rhdqor213 0 78 4ms 10 May 2025 273rd albanian-laundromat 0 78 100ms 3 days ago 273rd fuzzylojik-golf 🇺🇸 0 78 8ms 95 mins ago 277th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 278th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 279th kumavale 0 81 156ms 26 Nov 2025 279th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 279th albanian-laundromat 0 81 45ms 3 days ago 279th fuzzylojik-golf 🇺🇸 0 81 9ms 2 hours ago 283rd GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 283rd emgordon154 0 82 159ms 14 Feb 2026 283rd emgordon154 0 82 518ms 13 hours ago 286th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 286th edsrzf 🇳🇿 0 83 414ms 9 Jul 2025 286th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 286th fantaize 0 83 156ms 14 days ago 286th GolfingSuccess 🇬🇷 0 83 33ms 13 hours ago 286th MeWhenI 🇻🇦 0 83 229ms 4 hours ago 292nd Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 292nd ovs-code 🇩🇪 0 84 12ms 10 May 2025 292nd fuzzylojik-golf 🇺🇸 0 84 444ms 39 hours ago 295th edsrzf 🇳🇿 0 85 42ms 8 May 2025 295th edsrzf 🇳🇿 0 85 18ms 9 May 2025 295th error256 0 85 18ms 10 May 2025 295th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 295th KasperKivimaeki 🇫🇮 0 85 12ms 8 hours ago 300th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 300th kg583 🇺🇸 0 86 39ms 16 Feb 2025 300th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 300th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 300th edsrzf 🇳🇿 0 86 155ms 9 May 2025 300th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 300th GolfingSuccess 🇬🇷 0 86 8ms 12 Nov 2025 300th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 300th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 300th elgan65536 🇺🇸 0 86 168ms 24 days ago 300th CaedenHarper 🇨🇦 0 86 399ms 3 days ago 300th CaedenHarper 🇨🇦 0 86 153ms 2 days ago 300th edsrzf 🇳🇿 0 86 414ms 12 hours ago 300th edsrzf 🇳🇿 0 86 8ms 5 hours ago 314th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 314th GolfingSuccess 🇬🇷 0 87 18ms 8 May 2025 314th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 314th albanian-laundromat 0 87 1,424ms 3 days ago 314th Yax42 🇫🇷 0 87 2,430ms 22 hours ago 319th GolfingSuccess 🇬🇷 0 88 5ms 12 Nov 2025 319th kg583 🇺🇸 0 88 23ms 12 Feb 2026 First Prev 241–320 of 386 Next Last