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 241st Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 241st sean-niemann 🇺🇸 0 75 103ms 8 May 2025 243rd GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 243rd fuzzylojik-golf 🇺🇸 0 76 104ms 23 hours ago 243rd edsrzf 🇳🇿 0 76 131ms 15 hours ago 246th rucin93 🇵🇱 0 77 130ms 8 May 2025 246th ovs-code 🇩🇪 0 77 81ms 30 May 2025 246th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 249th saito-ta 🇯🇵 0 78 4ms 10 May 2025 249th rhdqor213 0 78 4ms 10 May 2025 249th albanian-laundromat 0 78 100ms 3 days ago 252nd GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 253rd sean-niemann 🇺🇸 0 80 455ms 8 May 2025 254th kumavale 0 81 156ms 26 Nov 2025 254th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 254th albanian-laundromat 0 81 46ms 3 days ago 257th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 257th emgordon154 0 82 162ms 14 Feb 2026 259th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 259th edsrzf 🇳🇿 0 83 414ms 9 Jul 2025 259th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 259th fantaize 0 83 156ms 14 days ago 263rd Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 263rd ovs-code 🇩🇪 0 84 12ms 10 May 2025 263rd fuzzylojik-golf 🇺🇸 0 84 444ms 23 hours ago 266th GolfingSuccess 🇬🇷 0 85 46ms 8 May 2025 266th edsrzf 🇳🇿 0 85 42ms 8 May 2025 266th edsrzf 🇳🇿 0 85 18ms 9 May 2025 266th error256 0 85 18ms 10 May 2025 266th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 271st Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 271st kg583 🇺🇸 0 86 39ms 16 Feb 2025 271st GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 271st GolfingSuccess 🇬🇷 0 86 2,431ms 8 May 2025 271st edsrzf 🇳🇿 0 86 155ms 9 May 2025 271st sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 271st GolfingSuccess 🇬🇷 0 86 8ms 12 Nov 2025 271st MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 271st GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 271st elgan65536 🇺🇸 0 86 168ms 23 days ago 271st CaedenHarper 🇨🇦 0 86 399ms 2 days ago 271st CaedenHarper 🇨🇦 0 86 153ms 47 hours ago 271st KasperKivimaeki 🇫🇮 0 86 12ms 2 hours ago 284th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 284th GolfingSuccess 🇬🇷 0 87 18ms 8 May 2025 284th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 284th albanian-laundromat 0 87 1,424ms 2 days ago 284th Yax42 🇫🇷 0 87 2,511ms 6 hours ago 289th GolfingSuccess 🇬🇷 0 88 6ms 12 Nov 2025 289th kg583 🇺🇸 0 88 23ms 12 Feb 2026 289th fuzzylojik-golf 🇺🇸 0 88 152ms 21 hours ago 292nd Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 292nd Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 292nd DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 292nd CaedenHarper 🇨🇦 0 89 103ms 47 hours ago 296th Yax42 🇫🇷 0 90 13ms 6 hours ago 297th GolfingSuccess 🇬🇷 0 91 14ms 13 Dec 2025 298th namelessiw 0 92 504ms 10 Oct 2025 298th fuzzylojik-golf 🇺🇸 0 92 390ms 22 hours ago 298th madex 🇩🇪 0 92 12ms 92 mins ago 301st CaedenHarper 🇨🇦 0 93 13ms 3 days ago 302nd DialFrost 🇸🇬 0 94 13ms 10 May 2025 302nd edsrzf 🇳🇿 0 94 187ms 17 May 2025 304th Yax42 🇫🇷 0 95 389ms 6 hours ago 305th GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 306th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 306th HumanoidCPU 0 98 158ms 22 mins ago 308th snydej 0 99 43ms 22 Nov 2024 308th albanian-laundromat 0 99 343ms 3 days ago 310th dokutan 0 100 370ms 6 hours ago 311th sean-niemann 🇺🇸 0 102 286ms 8 May 2025 311th Shanethegamer 🇺🇸 0 102 307ms 8 May 2025 311th edsrzf 🇳🇿 0 102 295ms 9 May 2025 311th GolfingSuccess 🇬🇷 0 102 306ms 9 May 2025 311th ovs-code 🇩🇪 0 102 311ms 13 Dec 2025 311th CaedenHarper 🇨🇦 0 102 301ms 3 days ago 311th fuzzylojik-golf 🇺🇸 0 102 292ms 23 hours ago 318th lukechampine 0 103 301ms 7 Jun 2025 318th chris124567 0 103 294ms 8 Jun 2025 318th albanian-laundromat 0 103 270ms 16 Dec 2025 First Prev 241–320 of 346 Next Last