The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. 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 Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 322nd GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 322nd GolfingSuccess 🇬🇷 0 73 8ms 3 days ago 324th not-a-pokemon 0 74 15ms 3 days ago 325th Shanethegamer 🇺🇸 0 75 107ms 26 Nov 2024 325th sean-niemann 🇺🇸 0 75 106ms 8 May 2025 325th HumanoidCPU 0 75 110ms 3 days ago 325th MeWhenI 🇻🇦 0 75 102ms 47 hours ago 329th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 329th fuzzylojik-golf 🇺🇸 0 76 99ms 5 days ago 329th edsrzf 🇳🇿 0 76 131ms 5 days ago 329th emgordon154 0 76 115ms 4 days ago 333rd rucin93 🇵🇱 0 77 130ms 8 May 2025 333rd Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 333rd edsrzf 🇳🇿 0 77 7ms 3 days ago 333rd GolfingSuccess 🇬🇷 0 77 8ms 3 days ago 333rd Steffan153 🇫🇮 0 77 7ms 2 days ago 338th saito-ta 🇯🇵 0 78 4ms 10 May 2025 338th rhdqor213 0 78 4ms 10 May 2025 338th albanian-laundromat 0 78 98ms 7 days ago 338th fuzzylojik-golf 🇺🇸 0 78 8ms 3 days ago 338th edsrzf 🇳🇿 0 78 425ms 3 days ago 343rd madex 🇩🇪 0 79 110ms 14 hours ago 344th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 345th kumavale 0 81 170ms 26 Nov 2025 345th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 345th albanian-laundromat 0 81 45ms 7 days ago 345th fuzzylojik-golf 🇺🇸 0 81 9ms 3 days ago 345th stefangimmillaro 0 81 44ms 3 days ago 345th KasperKivimaeki 🇫🇮 0 81 5ms 35 hours ago 351st GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 351st emgordon154 0 82 170ms 14 Feb 2026 351st emgordon154 0 82 452ms 4 days ago 351st edsrzf 🇳🇿 0 82 167ms 3 days ago 351st GolfingSuccess 🇬🇷 0 82 17ms 2 days ago 356th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 356th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 356th fantaize 0 83 163ms 18 days ago 356th GolfingSuccess 🇬🇷 0 83 33ms 4 days ago 356th MeWhenI 🇻🇦 0 83 229ms 3 days ago 356th KrausRaus 🇺🇸 0 83 13ms 41 hours ago 356th madex 🇩🇪 0 83 111ms 14 hours ago 363rd Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 363rd ovs-code 🇩🇪 0 84 12ms 10 May 2025 363rd fuzzylojik-golf 🇺🇸 0 84 444ms 5 days ago 363rd dokutan 0 84 417ms 47 hours ago 367th edsrzf 🇳🇿 0 85 42ms 8 May 2025 367th edsrzf 🇳🇿 0 85 18ms 9 May 2025 367th error256 0 85 18ms 10 May 2025 367th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 367th HumanoidCPU 0 85 434ms 3 days ago 367th HumanoidCPU 0 85 419ms 2 days ago 367th madex 🇩🇪 0 85 72ms 15 hours ago 374th Shanethegamer 🇺🇸 0 86 158ms 17 Dec 2024 374th kg583 🇺🇸 0 86 39ms 16 Feb 2025 374th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 374th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 374th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 374th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 374th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 374th elgan65536 🇺🇸 0 86 184ms 1 Mar 2026 374th CaedenHarper 🇨🇦 0 86 399ms 7 days ago 374th CaedenHarper 🇨🇦 0 86 154ms 6 days ago 374th edsrzf 🇳🇿 0 86 414ms 4 days ago 374th emgordon154 0 86 406ms 3 days ago 374th GolfingSuccess 🇬🇷 0 86 19ms 3 days ago 374th Steffan153 🇫🇮 0 86 390ms 2 days ago 374th Steffan153 🇫🇮 0 86 19ms 2 days ago 374th stefangimmillaro 0 86 154ms 2 days ago 374th dokutan 0 86 19ms 19 hours ago 391st Shanethegamer 🇺🇸 0 87 42ms 15 Apr 2025 391st Shanethegamer 🇺🇸 0 87 20ms 8 May 2025 391st albanian-laundromat 0 87 1,424ms 7 days ago 391st Yax42 🇫🇷 0 87 2,340ms 4 days ago 391st Steffan153 🇫🇮 0 87 180ms 2 days ago 391st Steffan153 🇫🇮 0 87 4ms 2 days ago 391st roelderickx 0 87 1,609ms 46 hours ago 398th kg583 🇺🇸 0 88 23ms 12 Feb 2026 398th fuzzylojik-golf 🇺🇸 0 88 154ms 5 days ago 398th ovs-code 🇩🇪 0 88 167ms 26 mins ago First Prev 321–400 of 498 Next Last