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 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 238th zgialor-lab 0 64 16ms 3 hours ago 242nd JDiLenarda 🇫🇷 0 65 1,378ms 6 hours ago 243rd Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 243rd rucin93 🇵🇱 0 66 6ms 8 May 2025 243rd sean-niemann 🇺🇸 0 66 7ms 8 May 2025 243rd AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 243rd namelessiw 0 66 434ms 2 Nov 2025 243rd GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 243rd albanian-laundromat 0 66 1,391ms 3 days ago 243rd Yax42 🇫🇷 0 66 484ms 2 days ago 243rd fuzzylojik-golf 🇺🇸 0 66 456ms 44 hours ago 243rd edsrzf 🇳🇿 0 66 7ms 16 hours ago 253rd GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 253rd tomh1012 0 67 429ms 33 hours ago 255th Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 255th sean-niemann 🇺🇸 0 68 131ms 8 May 2025 255th edsrzf 🇳🇿 0 68 113ms 25 May 2025 255th GolfingSuccess 🇬🇷 0 68 110ms 2 days ago 255th fuzzylojik-golf 🇺🇸 0 68 1,320ms 5 hours ago 260th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 260th CaedenHarper 🇨🇦 0 69 486ms 2 days ago 262nd JOrE20 0 70 41ms 13 Feb 2026 263rd kg583 🇺🇸 0 71 27ms 1 Dec 2024 263rd CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 263rd GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 263rd edsrzf 🇳🇿 0 71 14ms 8 May 2025 263rd AlephSquirrel 0 71 13ms 9 May 2025 268th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 269th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 270th not-a-pokemon 0 74 15ms 5 hours ago 271st Shanethegamer 🇺🇸 0 75 99ms 26 Nov 2024 271st sean-niemann 🇺🇸 0 75 103ms 8 May 2025 271st HumanoidCPU 0 75 112ms 9 hours ago 274th GolfingSuccess 🇬🇷 0 76 133ms 28 Nov 2025 274th fuzzylojik-golf 🇺🇸 0 76 99ms 44 hours ago 274th edsrzf 🇳🇿 0 76 131ms 35 hours ago 274th emgordon154 0 76 115ms 16 hours ago 274th MeWhenI 🇻🇦 0 76 98ms 86 mins ago 279th rucin93 🇵🇱 0 77 130ms 8 May 2025 279th Shanethegamer 🇺🇸 0 77 146ms 12 Nov 2025 279th edsrzf 🇳🇿 0 77 7ms 94 mins ago 282nd saito-ta 🇯🇵 0 78 4ms 10 May 2025 282nd rhdqor213 0 78 4ms 10 May 2025 282nd albanian-laundromat 0 78 100ms 3 days ago 282nd fuzzylojik-golf 🇺🇸 0 78 8ms 6 hours ago 286th sean-niemann 🇺🇸 0 80 455ms 8 May 2025 287th kumavale 0 81 156ms 26 Nov 2025 287th Matter1024 🇮🇳 0 81 45ms 14 Feb 2026 287th albanian-laundromat 0 81 45ms 3 days ago 287th fuzzylojik-golf 🇺🇸 0 81 9ms 6 hours ago 291st GolfingSuccess 🇬🇷 0 82 502ms 8 May 2025 291st emgordon154 0 82 159ms 14 Feb 2026 291st emgordon154 0 82 518ms 18 hours ago 294th Shanethegamer 🇺🇸 0 83 484ms 26 Nov 2024 294th edsrzf 🇳🇿 0 83 414ms 9 Jul 2025 294th Shanethegamer 🇺🇸 0 83 403ms 9 Jul 2025 294th fantaize 0 83 156ms 15 days ago 294th GolfingSuccess 🇬🇷 0 83 33ms 17 hours ago 294th MeWhenI 🇻🇦 0 83 229ms 8 hours ago 294th GolfingSuccess 🇬🇷 0 83 8ms a min ago 301st Shanethegamer 🇺🇸 0 84 416ms 26 Nov 2024 301st ovs-code 🇩🇪 0 84 12ms 10 May 2025 301st fuzzylojik-golf 🇺🇸 0 84 444ms 44 hours ago 301st KasperKivimaeki 🇫🇮 0 84 12ms 3 hours ago 305th edsrzf 🇳🇿 0 85 42ms 8 May 2025 305th edsrzf 🇳🇿 0 85 18ms 9 May 2025 305th error256 0 85 18ms 10 May 2025 305th GolfingSuccess 🇬🇷 0 85 3ms 14 Jan 2026 309th Shanethegamer 🇺🇸 0 86 147ms 17 Dec 2024 309th kg583 🇺🇸 0 86 39ms 16 Feb 2025 309th GolfingSuccess 🇬🇷 0 86 44ms 7 May 2025 309th GolfingSuccess 🇬🇷 0 86 2,577ms 8 May 2025 309th edsrzf 🇳🇿 0 86 155ms 9 May 2025 309th sean-niemann 🇺🇸 0 86 496ms 25 Sep 2025 309th MeWhenI 🇻🇦 0 86 381ms 21 Nov 2025 309th GolfingSuccess 🇬🇷 0 86 399ms 12 Jan 2026 309th elgan65536 🇺🇸 0 86 168ms 24 days ago 309th CaedenHarper 🇨🇦 0 86 399ms 3 days ago 309th CaedenHarper 🇨🇦 0 86 153ms 2 days ago 309th edsrzf 🇳🇿 0 86 414ms 17 hours ago First Prev 241–320 of 395 Next Last