Gray Code Decoder 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript 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 ><> 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 ALGOL 68 APL ArkScript 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 1st 2bular 0 7 48ms 5 Jul 2025 1st Natanaelel 🇸🇪 0 7 57ms 5 Jul 2025 3rd kg583 🇺🇸 0 9 916ms 14 May 2025 4th 2bular 0 13 5ms 9 Dec 2024 4th ovs-code 🇩🇪 0 13 4ms 5 Jan 2025 4th Natanaelel 🇸🇪 0 13 4ms 8 May 2025 4th SirBogman 🇺🇸 0 13 5ms 12 Oct 2025 4th namelessiw 0 13 335ms 25 Oct 2025 4th GolfingSuccess 🇬🇷 0 13 4ms 12 Jan 2026 10th saito-ta 🇯🇵 0 18 79ms 11 May 2025 10th GolfingSuccess 🇬🇷 0 18 90ms 12 Jan 2026 12th albanian-laundromat 0 19 4ms 12 hours ago 13th pardouin 🇫🇷 0 20 77ms 25 Feb 2025 13th AlephSquirrel 0 20 8ms 3 Dec 2025 13th ovs-code 🇩🇪 0 20 9ms 3 Dec 2025 16th emgordon154 0 26 383ms 22 Nov 2025 16th albanian-laundromat 0 26 33ms 42 hours ago 18th AlephSquirrel 0 27 6ms 3 Dec 2025 18th ovs-code 🇩🇪 0 27 6ms 7 Dec 2025 18th GolfingSuccess 🇬🇷 0 27 31ms 19 days ago 21st 2bular 0 28 36ms 9 Oct 2025 21st SirBogman 🇺🇸 0 28 38ms 9 Oct 2025 23rd Natanaelel 🇸🇪 0 29 37ms 11 May 2025 23rd ovs-code 🇩🇪 0 29 35ms 9 Oct 2025 23rd ovs-code 🇩🇪 0 29 125ms 3 Dec 2025 26th error256 0 30 26ms 12 Jan 2026 27th Shanethegamer 🇺🇸 0 32 36ms 19 May 2025 28th Natanaelel 🇸🇪 0 33 142ms 8 May 2025 29th 4atj 0 35 411ms 21 May 2025 29th error256 0 35 86ms 12 Jan 2026 31st 4atj 0 36 223ms 21 May 2025 32nd saito-ta 🇯🇵 0 37 8ms 11 May 2025 32nd Natanaelel 🇸🇪 0 37 9ms 11 May 2025 34th Natanaelel 🇸🇪 0 38 41ms 8 May 2025 34th ovs-code 🇩🇪 0 38 42ms 13 Jan 2026 36th stefangimmillaro 0 41 68ms 9 May 2025 37th Shanethegamer 🇺🇸 0 42 39ms 13 Dec 2024 37th MeWhenI 🇻🇦 0 42 1,001ms 15 Apr 2025 37th saito-ta 🇯🇵 0 42 386ms 10 May 2025 37th anter69 🇭🇺 0 42 178ms 9 days ago 41st bitsandbeyond 🇳🇱 0 44 1,172ms 8 Dec 2025 41st error256 0 44 1,261ms 15 Jan 2026 43rd albanian-laundromat 0 47 941ms 5 Jan 2026 43rd kg583 🇺🇸 0 47 11ms 14 Jan 2026 43rd anter69 🇭🇺 0 47 1,370ms 9 days ago 46th ovs-code 🇩🇪 0 48 343ms 23 Feb 2025 46th DialFrost 🇸🇬 0 48 55ms 16 Dec 2025 48th antimon2 🇯🇵 0 49 314ms 16 Dec 2024 48th GolfingSuccess 🇬🇷 0 49 36ms 12 Jan 2026 48th error256 0 49 343ms 13 Jan 2026 51st Shanethegamer 🇺🇸 0 50 3,580ms 8 May 2025 51st error256 0 50 4,591ms 15 Jan 2026 53rd lukegustafson 🇺🇸 0 51 36ms 16 Jun 2025 53rd GolfingSuccess 🇬🇷 0 51 33ms 12 Jan 2026 53rd sean-niemann 🇺🇸 0 51 36ms 15 Jan 2026 56th Shanethegamer 🇺🇸 0 52 1,314ms 13 Dec 2024 57th kg583 🇺🇸 0 53 6ms 2 Oct 2025 57th albanian-laundromat 0 53 1,031ms 6 Dec 2025 59th Shanethegamer 🇺🇸 0 54 42ms 13 Dec 2024 59th rucin93 🇵🇱 0 54 39ms 24 Feb 2025 59th error256 0 54 28ms 2 May 2025 59th albanian-laundromat 0 54 11ms 4 Jan 2026 63rd Natanaelel 🇸🇪 0 55 15ms 8 May 2025 63rd albanian-laundromat 0 55 2,247ms 6 Jan 2026 65th kg583 🇺🇸 0 56 653ms 1 Dec 2024 65th GolfingSuccess 🇬🇷 0 56 8ms 14 Jan 2026 65th kg583 🇺🇸 0 56 8ms 14 Jan 2026 65th GolfingSuccess 🇬🇷 0 56 488ms 22 days ago 69th edsrzf 🇳🇿 0 57 15ms 10 May 2025 70th pardouin 🇫🇷 0 58 650ms 24 Feb 2025 70th sean-niemann 🇺🇸 0 58 150ms 15 Jan 2026 72nd lifthrasiir 🇰🇷 0 59 572ms 11 Dec 2024 72nd ovs-code 🇩🇪 0 59 517ms 23 Feb 2025 72nd GolfingSuccess 🇬🇷 0 59 175ms 12 Jan 2026 72nd error256 0 59 68ms 13 Jan 2026 76th khvdm 0 60 156ms 13 Jan 2025 76th emgordon154 0 60 304ms 9 May 2025 76th emgordon154 0 60 379ms 9 May 2025 79th DialFrost 🇸🇬 0 61 25ms 24 Feb 2025 79th voytxt 🇨🇿 0 61 28ms 1 Jan 2026 1–80 of 240 Next Last
