The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 28 hours. Why not try and solve them ahead of time?
Gray Code Encoder in all languages in chars. 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 Chars Time Submitted 321st JOrE20 0 70 41ms 13 Feb 2026 322nd kg583 🇺🇸 0 71 27ms 1 Dec 2024 322nd CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 322nd GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 322nd edsrzf 🇳🇿 0 71 14ms 8 May 2025 322nd AlephSquirrel 0 71 13ms 9 May 2025 322nd emgordon154 0 71 32ms 36 hours ago 328th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 329th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 329th GolfingSuccess 🇬🇷 0 73 8ms 4 days ago 329th michelebastione 🇮🇹 0 73 402ms 23 hours ago 332nd not-a-pokemon 0 74 15ms 5 days ago 333rd Shanethegamer 🇺🇸 0 75 107ms 26 Nov 2024 333rd sean-niemann 🇺🇸 0 75 106ms 8 May 2025 333rd HumanoidCPU 0 75 110ms 5 days ago 333rd MeWhenI 🇻🇦 0 75 102ms 3 days ago 333rd aksyristos 0 75 14ms 9 hours ago 338th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 338th fuzzylojik-golf 🇺🇸 0 76 99ms 6 days ago 338th edsrzf 🇳🇿 0 76 131ms 6 days ago 338th emgordon154 0 76 115ms 5 days ago 338th fuzzylojik-golf 🇺🇸 0 76 8ms 19 hours ago 343rd rucin93 🇵🇱 0 77 130ms 8 May 2025 343rd Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 343rd edsrzf 🇳🇿 0 77 7ms 5 days ago 343rd GolfingSuccess 🇬🇷 0 77 8ms 4 days ago 343rd Steffan153 🇫🇮 0 77 7ms 3 days ago 348th saito-ta 🇯🇵 0 78 4ms 10 May 2025 348th rhdqor213 0 78 4ms 10 May 2025 348th albanian-laundromat 0 78 98ms 8 days ago 348th edsrzf 🇳🇿 0 78 425ms 4 days ago 352nd madex 🇩🇪 0 79 110ms 2 days ago 353rd sean-niemann 🇺🇸 0 80 455ms 8 May 2025 354th kumavale 0 81 170ms 26 Nov 2025 354th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 354th albanian-laundromat 0 81 45ms 8 days ago 354th fuzzylojik-golf 🇺🇸 0 81 9ms 5 days ago 354th stefangimmillaro 0 81 44ms 4 days ago 354th KasperKivimaeki 🇫🇮 0 81 4ms 2 days ago 360th GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 360th emgordon154 0 82 170ms 14 Feb 2026 360th emgordon154 0 82 452ms 5 days ago 360th edsrzf 🇳🇿 0 82 167ms 4 days ago 360th GolfingSuccess 🇬🇷 0 82 17ms 3 days ago 365th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 365th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 365th fantaize 0 83 163ms 20 days ago 365th GolfingSuccess 🇬🇷 0 83 33ms 5 days ago 365th MeWhenI 🇻🇦 0 83 229ms 5 days ago 365th KrausRaus 🇺🇸 0 83 13ms 3 days ago 365th madex 🇩🇪 0 83 111ms 2 days ago 372nd Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 372nd ovs-code 🇩🇪 0 84 12ms 10 May 2025 372nd fuzzylojik-golf 🇺🇸 0 84 444ms 6 days ago 372nd dokutan 0 84 417ms 3 days ago 376th edsrzf 🇳🇿 0 85 42ms 8 May 2025 376th edsrzf 🇳🇿 0 85 18ms 9 May 2025 376th error256 0 85 18ms 10 May 2025 376th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 376th HumanoidCPU 0 85 434ms 4 days ago 376th HumanoidCPU 0 85 419ms 3 days ago 376th madex 🇩🇪 0 85 72ms 2 days ago 383rd Shanethegamer 🇺🇸 0 86 158ms 17 Dec 2024 383rd kg583 🇺🇸 0 86 39ms 16 Feb 2025 383rd GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 383rd GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 383rd sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 383rd MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 383rd GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 383rd elgan65536 🇺🇸 0 86 164ms 1 Mar 2026 383rd CaedenHarper 🇨🇦 0 86 399ms 8 days ago 383rd CaedenHarper 🇨🇦 0 86 154ms 7 days ago 383rd edsrzf 🇳🇿 0 86 414ms 5 days ago 383rd emgordon154 0 86 406ms 5 days ago 383rd GolfingSuccess 🇬🇷 0 86 19ms 4 days ago 383rd Steffan153 🇫🇮 0 86 390ms 4 days ago 383rd Steffan153 🇫🇮 0 86 19ms 4 days ago 383rd stefangimmillaro 0 86 154ms 3 days ago 383rd dokutan 0 86 19ms 2 days ago 400th Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 First Prev 321–400 of 510 Next Last