The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 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 321st saito-ta 🇯🇵 0 78 4ms 10 May 2025 321st rhdqor213 0 78 4ms 10 May 2025 321st albanian-laundromat 0 78 93ms 5 days ago 321st fuzzylojik-golf 🇺🇸 0 78 8ms 35 hours ago 321st edsrzf 🇳🇿 0 78 425ms 28 hours ago 326th GolfingSuccess 🇬🇷 0 79 79ms 14 May 2025 327th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 328th kumavale 0 81 156ms 26 Nov 2025 328th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 328th albanian-laundromat 0 81 45ms 5 days ago 328th fuzzylojik-golf 🇺🇸 0 81 9ms 35 hours ago 328th stefangimmillaro 0 81 46ms 23 hours ago 333rd GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 333rd emgordon154 0 82 159ms 14 Feb 2026 333rd emgordon154 0 82 454ms 47 hours ago 333rd edsrzf 🇳🇿 0 82 161ms 24 hours ago 337th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 337th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 337th fantaize 0 83 156ms 16 days ago 337th GolfingSuccess 🇬🇷 0 83 33ms 46 hours ago 337th MeWhenI 🇻🇦 0 83 229ms 38 hours ago 342nd Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 342nd ovs-code 🇩🇪 0 84 12ms 10 May 2025 342nd fuzzylojik-golf 🇺🇸 0 84 444ms 3 days ago 342nd KasperKivimaeki 🇫🇮 0 84 12ms 32 hours ago 342nd emgordon154 0 84 29ms 53 mins ago 347th edsrzf 🇳🇿 0 85 42ms 8 May 2025 347th edsrzf 🇳🇿 0 85 18ms 9 May 2025 347th error256 0 85 18ms 10 May 2025 347th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 347th HumanoidCPU 0 85 434ms 24 hours ago 347th HumanoidCPU 0 85 419ms 41 mins ago 353rd Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 353rd kg583 🇺🇸 0 86 39ms 16 Feb 2025 353rd GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 353rd GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 353rd sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 353rd MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 353rd GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 353rd elgan65536 🇺🇸 0 86 168ms 25 days ago 353rd CaedenHarper 🇨🇦 0 86 399ms 5 days ago 353rd CaedenHarper 🇨🇦 0 86 153ms 4 days ago 353rd edsrzf 🇳🇿 0 86 414ms 46 hours ago 353rd emgordon154 0 86 406ms 33 hours ago 353rd GolfingSuccess 🇬🇷 0 86 19ms 25 hours ago 353rd Steffan153 🇫🇮 0 86 390ms 10 hours ago 353rd Steffan153 🇫🇮 0 86 19ms 8 hours ago 368th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 368th Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 368th albanian-laundromat 0 87 1,424ms 4 days ago 368th Yax42 🇫🇷 0 87 2,430ms 2 days ago 368th Steffan153 🇫🇮 0 87 180ms 9 hours ago 368th Steffan153 🇫🇮 0 87 4ms 5 hours ago 374th kg583 🇺🇸 0 88 23ms 12 Feb 2026 374th fuzzylojik-golf 🇺🇸 0 88 152ms 2 days ago 376th Shanethegamer 🇺🇸 0 89 341ms 6 May 2025 376th Shanethegamer 🇺🇸 0 89 511ms 24 Sep 2025 376th DialFrost 🇸🇬 0 89 367ms 21 Nov 2025 376th CaedenHarper 🇨🇦 0 89 103ms 4 days ago 376th roelderickx 0 89 1,614ms 14 hours ago 376th madex 🇩🇪 0 89 172ms 3 hours ago 382nd Yax42 🇫🇷 0 90 13ms 2 days ago 383rd GolfingSuccess 🇬🇷 0 91 14ms 13 Dec 2025 384th namelessiw 0 92 504ms 10 Oct 2025 384th fuzzylojik-golf 🇺🇸 0 92 383ms 2 days ago 384th madex 🇩🇪 0 92 12ms 2 days ago 387th CaedenHarper 🇨🇦 0 93 13ms 5 days ago 388th DialFrost 🇸🇬 0 94 13ms 10 May 2025 388th edsrzf 🇳🇿 0 94 187ms 17 May 2025 388th edsrzf 🇳🇿 0 94 21ms 30 hours ago 391st Yax42 🇫🇷 0 95 389ms 2 days ago 392nd GolfingSuccess 🇬🇷 0 96 182ms 7 May 2025 392nd HumanoidCPU 0 96 160ms 2 days ago 394th HumanoidCPU 0 97 7ms 10 mins ago 395th Shanethegamer 🇺🇸 0 98 7ms 6 May 2025 396th snydej 0 99 43ms 22 Nov 2024 396th albanian-laundromat 0 99 343ms 5 days ago 396th dokutan 0 99 409ms 37 hours ago 399th dokutan 0 100 19ms 37 hours ago 399th ovs-code 🇩🇪 0 100 160ms 9 hours ago First Prev 321–400 of 459 Next Last