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 187th Pyroan 0 62 19ms 20 hours ago 187th edsrzf 🇳🇿 0 62 15ms 19 hours ago 187th zacjl 0 62 17ms 11 hours ago 187th MeWhenI 🇻🇦 0 62 86ms 10 hours ago 187th ComradeSquirrel 0 62 14ms 8 hours ago 187th duckyluuk 🇳🇱 0 62 15ms 3 hours ago 247th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 247th albanian-laundromat 0 63 44ms 14 Jan 2026 247th tomh1012 0 63 15ms 2 days ago 247th MeWhenI 🇻🇦 0 63 204ms 20 hours ago 247th mishak-sys 0 63 15ms 119 mins ago 252nd jameswmccarty 0 64 15ms 29 Mar 2025 252nd albanian-laundromat 0 64 188ms 4 days ago 252nd zgialor-lab 0 64 16ms 22 hours ago 255th JDiLenarda 🇫🇷 0 65 1,347ms 25 hours ago 256th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 256th rucin93 🇵🇱 0 66 6ms 8 May 2025 256th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 256th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 256th namelessiw 0 66 474ms 2 Nov 2025 256th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 256th albanian-laundromat 0 66 1,391ms 4 days ago 256th Yax42 🇫🇷 0 66 484ms 3 days ago 256th fuzzylojik-golf 🇺🇸 0 66 456ms 2 days ago 256th edsrzf 🇳🇿 0 66 7ms 35 hours ago 256th edsrzf 🇳🇿 0 66 1,345ms 18 hours ago 256th edsrzf 🇳🇿 0 66 451ms 6 hours ago 268th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 268th tomh1012 0 67 429ms 2 days ago 270th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 270th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 270th edsrzf 🇳🇿 0 68 113ms 25 May 2025 270th GolfingSuccess 🇬🇷 0 68 110ms 3 days ago 270th fuzzylojik-golf 🇺🇸 0 68 1,320ms 23 hours ago 275th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 275th CaedenHarper 🇨🇦 0 69 486ms 3 days ago 277th JOrE20 0 70 41ms 13 Feb 2026 278th kg583 🇺🇸 0 71 27ms 1 Dec 2024 278th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 278th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 278th edsrzf 🇳🇿 0 71 14ms 8 May 2025 278th AlephSquirrel 0 71 13ms 9 May 2025 283rd Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 283rd dokutan 0 72 62ms 8 Feb 2026 285th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 285th GolfingSuccess 🇬🇷 0 73 8ms 18 hours ago 287th not-a-pokemon 0 74 15ms 23 hours ago 288th Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 288th sean-niemann 🇺🇸 0 75 103ms 8 May 2025 288th HumanoidCPU 0 75 112ms 27 hours ago 291st GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 291st fuzzylojik-golf 🇺🇸 0 76 99ms 2 days ago 291st edsrzf 🇳🇿 0 76 131ms 2 days ago 291st emgordon154 0 76 115ms 34 hours ago 291st MeWhenI 🇻🇦 0 76 98ms 19 hours ago 296th rucin93 🇵🇱 0 77 130ms 8 May 2025 296th ovs-code 🇩🇪 0 77 81ms 30 May 2025 296th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 296th edsrzf 🇳🇿 0 77 7ms 20 hours ago 296th GolfingSuccess 🇬🇷 0 77 8ms 18 hours ago 301st saito-ta 🇯🇵 0 78 4ms 10 May 2025 301st rhdqor213 0 78 4ms 10 May 2025 301st albanian-laundromat 0 78 93ms 4 days ago 301st fuzzylojik-golf 🇺🇸 0 78 8ms 24 hours ago 301st edsrzf 🇳🇿 0 78 425ms 18 hours ago 306th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 307th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 308th kumavale 0 81 156ms 26 Nov 2025 308th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 308th albanian-laundromat 0 81 45ms 4 days ago 308th fuzzylojik-golf 🇺🇸 0 81 9ms 25 hours ago 308th stefangimmillaro 0 81 46ms 12 hours ago 313th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 313th emgordon154 0 82 159ms 14 Feb 2026 313th emgordon154 0 82 454ms 36 hours ago 313th edsrzf 🇳🇿 0 82 161ms 14 hours ago 317th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 317th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 317th fantaize 0 83 156ms 15 days ago 317th GolfingSuccess 🇬🇷 0 83 33ms 36 hours ago First Prev 241–320 of 427 Next Last