The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 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 231st 4atj 0 62 16ms 9 May 2025 231st Natanaelel 🇸🇪 0 62 16ms 11 May 2025 231st hiichbindermax 0 62 18ms 17 Aug 2025 231st 5cw 🇺🇸 0 62 15ms 22 Aug 2025 231st commandz0 🇺🇸 0 62 15ms 27 Aug 2025 231st SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 231st KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 231st Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 231st lukegustafson 🇺🇸 0 62 36ms 18 days ago 231st aksyristos 0 62 14ms 16 days ago 231st madex 🇩🇪 0 62 15ms 8 days ago 231st CaedenHarper 🇨🇦 0 62 16ms 6 days ago 231st KatieLG 🇬🇧 0 62 16ms 4 days ago 231st KatieLG 🇬🇧 0 62 416ms 4 days ago 231st scpchicken 🇵🇼 0 62 15ms 4 days ago 231st StefanHabel 🇨🇦 0 62 15ms 4 days ago 231st blaztoma 🇱🇹 0 62 15ms 3 days ago 231st Emutis 🇱🇹 0 62 16ms 3 days ago 231st Andrey2001 0 62 16ms 3 days ago 231st anter69 🇭🇺 0 62 15ms 3 days ago 231st qpwoeirut 0 62 17ms 3 days ago 231st stefangimmillaro 0 62 16ms 3 days ago 231st btjones0 0 62 15ms 3 days ago 231st bzijlema 🇳🇱 0 62 16ms 2 days ago 231st ahmetdemirag 🇨🇾 0 62 15ms 2 days ago 231st Pyroan 0 62 19ms 2 days ago 231st edsrzf 🇳🇿 0 62 15ms 2 days ago 231st zacjl 0 62 17ms 2 days ago 231st MeWhenI 🇻🇦 0 62 86ms 2 days ago 231st ComradeSquirrel 0 62 14ms 2 days ago 231st duckyluuk 🇳🇱 0 62 15ms 42 hours ago 231st Aquateraneal 🇺🇸 0 62 15ms 31 hours ago 231st madex 🇩🇪 0 62 439ms 23 hours ago 231st madex 🇩🇪 0 62 1,125ms 23 hours ago 231st luuumine 🇫🇷 0 62 19ms 17 hours ago 276th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 276th albanian-laundromat 0 63 44ms 14 Jan 2026 276th tomh1012 0 63 15ms 3 days ago 276th mishak-sys 0 63 15ms 41 hours ago 280th jameswmccarty 0 64 15ms 29 Mar 2025 280th dokutan 0 64 63ms 8 Feb 2026 280th albanian-laundromat 0 64 188ms 6 days ago 280th zgialor-lab 0 64 16ms 2 days ago 284th JDiLenarda 🇫🇷 0 65 1,347ms 2 days ago 285th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 285th rucin93 🇵🇱 0 66 6ms 8 May 2025 285th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 285th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 285th namelessiw 0 66 474ms 2 Nov 2025 285th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 285th albanian-laundromat 0 66 1,345ms 6 days ago 285th Yax42 🇫🇷 0 66 461ms 4 days ago 285th fuzzylojik-golf 🇺🇸 0 66 456ms 4 days ago 285th edsrzf 🇳🇿 0 66 7ms 3 days ago 285th edsrzf 🇳🇿 0 66 1,345ms 2 days ago 285th edsrzf 🇳🇿 0 66 451ms 45 hours ago 285th Steffan153 🇫🇮 0 66 480ms 39 hours ago 285th Steffan153 🇫🇮 0 66 7ms 34 hours ago 299th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 299th tomh1012 0 67 429ms 3 days ago 299th msbranicky 0 67 16ms 19 hours ago 302nd Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 302nd sean-niemann 🇺🇸 0 68 131ms 8 May 2025 302nd edsrzf 🇳🇿 0 68 113ms 25 May 2025 302nd GolfingSuccess 🇬🇷 0 68 110ms 5 days ago 302nd fuzzylojik-golf 🇺🇸 0 68 1,320ms 2 days ago 302nd Steffan153 🇫🇮 0 68 104ms 39 hours ago 308th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 308th CaedenHarper 🇨🇦 0 69 486ms 5 days ago 308th MeWhenI 🇻🇦 0 69 454ms 20 hours ago 311th JOrE20 0 70 41ms 13 Feb 2026 312th kg583 🇺🇸 0 71 27ms 1 Dec 2024 312th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 312th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 312th edsrzf 🇳🇿 0 71 14ms 8 May 2025 312th AlephSquirrel 0 71 13ms 9 May 2025 317th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 318th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 318th GolfingSuccess 🇬🇷 0 73 8ms 2 days ago 320th not-a-pokemon 0 74 15ms 2 days ago First Prev 241–320 of 482 Next Last