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 239th tomh1012 0 63 15ms 41 hours ago 239th MeWhenI 🇻🇦 0 63 204ms 9 hours ago 243rd jameswmccarty 0 64 15ms 29 Mar 2025 243rd albanian-laundromat 0 64 188ms 4 days ago 243rd zgialor-lab 0 64 16ms 11 hours ago 246th JDiLenarda 🇫🇷 0 65 1,378ms 14 hours ago 247th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 247th rucin93 🇵🇱 0 66 6ms 8 May 2025 247th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 247th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 247th namelessiw 0 66 434ms 2 Nov 2025 247th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 247th albanian-laundromat 0 66 1,391ms 4 days ago 247th Yax42 🇫🇷 0 66 484ms 2 days ago 247th fuzzylojik-golf 🇺🇸 0 66 456ms 2 days ago 247th edsrzf 🇳🇿 0 66 7ms 24 hours ago 247th edsrzf 🇳🇿 0 66 1,345ms 7 hours ago 258th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 258th tomh1012 0 67 429ms 41 hours ago 260th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 260th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 260th edsrzf 🇳🇿 0 68 113ms 25 May 2025 260th GolfingSuccess 🇬🇷 0 68 110ms 3 days ago 260th fuzzylojik-golf 🇺🇸 0 68 1,320ms 13 hours ago 265th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 265th CaedenHarper 🇨🇦 0 69 486ms 3 days ago 267th JOrE20 0 70 41ms 13 Feb 2026 268th kg583 🇺🇸 0 71 27ms 1 Dec 2024 268th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 268th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 268th edsrzf 🇳🇿 0 71 14ms 8 May 2025 268th AlephSquirrel 0 71 13ms 9 May 2025 273rd Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 273rd dokutan 0 72 62ms 8 Feb 2026 275th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 275th GolfingSuccess 🇬🇷 0 73 8ms 7 hours ago 277th not-a-pokemon 0 74 15ms 13 hours ago 278th Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 278th sean-niemann 🇺🇸 0 75 103ms 8 May 2025 278th HumanoidCPU 0 75 112ms 17 hours ago 281st GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 281st fuzzylojik-golf 🇺🇸 0 76 99ms 2 days ago 281st edsrzf 🇳🇿 0 76 131ms 43 hours ago 281st emgordon154 0 76 115ms 24 hours ago 281st MeWhenI 🇻🇦 0 76 98ms 9 hours ago 286th rucin93 🇵🇱 0 77 130ms 8 May 2025 286th ovs-code 🇩🇪 0 77 81ms 30 May 2025 286th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 286th edsrzf 🇳🇿 0 77 7ms 9 hours ago 286th GolfingSuccess 🇬🇷 0 77 8ms 7 hours ago 291st saito-ta 🇯🇵 0 78 4ms 10 May 2025 291st rhdqor213 0 78 4ms 10 May 2025 291st albanian-laundromat 0 78 93ms 4 days ago 291st fuzzylojik-golf 🇺🇸 0 78 8ms 14 hours ago 291st edsrzf 🇳🇿 0 78 425ms 7 hours ago 296th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 297th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 298th kumavale 0 81 156ms 26 Nov 2025 298th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 298th albanian-laundromat 0 81 45ms 4 days ago 298th fuzzylojik-golf 🇺🇸 0 81 9ms 14 hours ago 298th stefangimmillaro 0 81 46ms 2 hours ago 303rd GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 303rd emgordon154 0 82 159ms 14 Feb 2026 303rd emgordon154 0 82 454ms 26 hours ago 303rd edsrzf 🇳🇿 0 82 161ms 3 hours ago 307th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 307th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 307th fantaize 0 83 156ms 15 days ago 307th GolfingSuccess 🇬🇷 0 83 33ms 25 hours ago 307th MeWhenI 🇻🇦 0 83 229ms 16 hours ago 312th Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 312th ovs-code 🇩🇪 0 84 12ms 10 May 2025 312th fuzzylojik-golf 🇺🇸 0 84 444ms 2 days ago 312th KasperKivimaeki 🇫🇮 0 84 12ms 11 hours ago 316th edsrzf 🇳🇿 0 85 42ms 8 May 2025 316th edsrzf 🇳🇿 0 85 18ms 9 May 2025 316th error256 0 85 18ms 10 May 2025 316th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 316th HumanoidCPU 0 85 434ms 2 hours ago First Prev 241–320 of 413 Next Last