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 232nd Shanethegamer 🇺🇸 0 62 2,495ms 8 May 2025 232nd 4atj 0 62 16ms 9 May 2025 232nd Natanaelel 🇸🇪 0 62 16ms 11 May 2025 232nd hiichbindermax 0 62 18ms 17 Aug 2025 232nd 5cw 🇺🇸 0 62 15ms 22 Aug 2025 232nd commandz0 🇺🇸 0 62 15ms 27 Aug 2025 232nd SirBogman 🇺🇸 0 62 15ms 12 Oct 2025 232nd KasperKivimaeki 🇫🇮 0 62 15ms 20 Oct 2025 232nd Matter1024 🇮🇳 0 62 15ms 12 Feb 2026 232nd lukegustafson 🇺🇸 0 62 36ms 19 days ago 232nd aksyristos 0 62 14ms 16 days ago 232nd madex 🇩🇪 0 62 15ms 8 days ago 232nd CaedenHarper 🇨🇦 0 62 16ms 6 days ago 232nd KatieLG 🇬🇧 0 62 16ms 4 days ago 232nd KatieLG 🇬🇧 0 62 416ms 4 days ago 232nd scpchicken 🇵🇼 0 62 15ms 4 days ago 232nd StefanHabel 🇨🇦 0 62 15ms 4 days ago 232nd blaztoma 🇱🇹 0 62 15ms 4 days ago 232nd Emutis 🇱🇹 0 62 16ms 4 days ago 232nd Andrey2001 0 62 16ms 4 days ago 232nd anter69 🇭🇺 0 62 15ms 3 days ago 232nd qpwoeirut 0 62 17ms 3 days ago 232nd stefangimmillaro 0 62 16ms 3 days ago 232nd btjones0 0 62 15ms 3 days ago 232nd bzijlema 🇳🇱 0 62 16ms 3 days ago 232nd ahmetdemirag 🇨🇾 0 62 15ms 3 days ago 232nd Pyroan 0 62 19ms 2 days ago 232nd edsrzf 🇳🇿 0 62 15ms 2 days ago 232nd zacjl 0 62 17ms 2 days ago 232nd MeWhenI 🇻🇦 0 62 86ms 2 days ago 232nd ComradeSquirrel 0 62 14ms 2 days ago 232nd duckyluuk 🇳🇱 0 62 15ms 2 days ago 232nd Aquateraneal 🇺🇸 0 62 15ms 40 hours ago 232nd madex 🇩🇪 0 62 439ms 32 hours ago 232nd madex 🇩🇪 0 62 1,125ms 32 hours ago 232nd luuumine 🇫🇷 0 62 19ms 26 hours ago 277th sean-niemann 🇺🇸 0 63 43ms 8 May 2025 277th albanian-laundromat 0 63 44ms 14 Jan 2026 277th tomh1012 0 63 15ms 4 days ago 277th mishak-sys 0 63 15ms 2 days ago 281st jameswmccarty 0 64 15ms 29 Mar 2025 281st dokutan 0 64 63ms 8 Feb 2026 281st albanian-laundromat 0 64 188ms 6 days ago 281st zgialor-lab 0 64 16ms 2 days ago 285th JDiLenarda 🇫🇷 0 65 1,347ms 3 days ago 286th Shanethegamer 🇺🇸 0 66 1,317ms 26 Nov 2024 286th rucin93 🇵🇱 0 66 6ms 8 May 2025 286th sean-niemann 🇺🇸 0 66 7ms 8 May 2025 286th AdrienHache 🇫🇷 0 66 421ms 2 Nov 2025 286th namelessiw 0 66 474ms 2 Nov 2025 286th GolfingSuccess 🇬🇷 0 66 430ms 4 Feb 2026 286th albanian-laundromat 0 66 1,345ms 6 days ago 286th Yax42 🇫🇷 0 66 461ms 5 days ago 286th fuzzylojik-golf 🇺🇸 0 66 456ms 4 days ago 286th edsrzf 🇳🇿 0 66 7ms 3 days ago 286th edsrzf 🇳🇿 0 66 1,345ms 2 days ago 286th edsrzf 🇳🇿 0 66 451ms 2 days ago 286th Steffan153 🇫🇮 0 66 480ms 2 days ago 286th Steffan153 🇫🇮 0 66 7ms 43 hours ago 300th GolfingSuccess 🇬🇷 0 67 12ms 8 May 2025 300th tomh1012 0 67 429ms 4 days ago 300th msbranicky 0 67 16ms 28 hours ago 303rd Shanethegamer 🇺🇸 0 68 145ms 26 Nov 2024 303rd sean-niemann 🇺🇸 0 68 131ms 8 May 2025 303rd edsrzf 🇳🇿 0 68 113ms 25 May 2025 303rd GolfingSuccess 🇬🇷 0 68 110ms 5 days ago 303rd fuzzylojik-golf 🇺🇸 0 68 1,320ms 3 days ago 303rd Steffan153 🇫🇮 0 68 104ms 2 days ago 309th GolfingSuccess 🇬🇷 0 69 10ms 8 May 2025 309th CaedenHarper 🇨🇦 0 69 486ms 5 days ago 309th MeWhenI 🇻🇦 0 69 454ms 29 hours ago 312th JOrE20 0 70 41ms 13 Feb 2026 313th kg583 🇺🇸 0 71 27ms 1 Dec 2024 313th CLOStrophobic 🇮🇹 0 71 13ms 18 Jan 2025 313th GolfingSuccess 🇬🇷 0 71 14ms 7 May 2025 313th edsrzf 🇳🇿 0 71 14ms 8 May 2025 313th AlephSquirrel 0 71 13ms 9 May 2025 318th Shanethegamer 🇺🇸 0 72 27ms 9 Dec 2024 319th GolfingSuccess 🇬🇷 0 73 16ms 8 May 2025 319th GolfingSuccess 🇬🇷 0 73 8ms 2 days ago First Prev 241–320 of 483 Next Last