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 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 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 Calendar 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 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Calendar 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 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 302ms 5 Jul 2025 1st Natanaelel 🇸🇪 0 7 315ms 5 Jul 2025 3rd kg583 🇺🇸 0 9 920ms 14 May 2025 4th 2bular 0 13 4ms 9 Dec 2024 4th ovs-code 🇩🇪 0 13 4ms 5 Jan 2025 4th Natanaelel 🇸🇪 0 13 4ms 8 May 2025 4th SirBogman 🇺🇸 0 13 4ms 12 Oct 2025 4th namelessiw 0 13 367ms 25 Oct 2025 9th saito-ta 🇯🇵 0 18 75ms 11 May 2025 10th pardouin 🇫🇷 0 20 72ms 25 Feb 2025 10th AlephSquirrel 0 20 9ms 15 hours ago 10th ovs-code 🇩🇪 0 20 11ms 12 hours ago 13th emgordon154 0 26 315ms 11 days ago 14th AlephSquirrel 0 27 6ms 15 hours ago 15th 2bular 0 28 45ms 9 Oct 2025 15th SirBogman 🇺🇸 0 28 40ms 9 Oct 2025 17th GolfingSuccess 🇬🇷 0 29 97ms 25 Nov 2024 17th Natanaelel 🇸🇪 0 29 44ms 11 May 2025 17th ovs-code 🇩🇪 0 29 45ms 9 Oct 2025 17th ovs-code 🇩🇪 0 29 125ms 12 hours ago 21st Shanethegamer 🇺🇸 0 32 34ms 19 May 2025 22nd Natanaelel 🇸🇪 0 33 132ms 8 May 2025 23rd 4atj 0 35 282ms 21 May 2025 24th 4atj 0 36 251ms 21 May 2025 25th saito-ta 🇯🇵 0 37 9ms 11 May 2025 25th Natanaelel 🇸🇪 0 37 10ms 11 May 2025 27th Natanaelel 🇸🇪 0 38 39ms 8 May 2025 28th error256 0 39 91ms 8 May 2025 29th stefangimmillaro 0 41 77ms 9 May 2025 30th Shanethegamer 🇺🇸 0 42 46ms 13 Dec 2024 30th MeWhenI 🇻🇦 0 42 1,012ms 15 Apr 2025 30th saito-ta 🇯🇵 0 42 360ms 10 May 2025 33rd error256 0 45 993ms 12 Apr 2025 34th kg583 🇺🇸 0 46 928ms 3 Oct 2025 34th bitsandbeyond 🇳🇱 0 46 1,087ms 20 Oct 2025 36th ovs-code 🇩🇪 0 48 320ms 23 Feb 2025 37th antimon2 🇯🇵 0 49 311ms 16 Dec 2024 37th DialFrost 🇸🇬 0 49 54ms 9 May 2025 37th kg583 🇺🇸 0 49 14ms 3 Oct 2025 40th Shanethegamer 🇺🇸 0 50 3,217ms 8 May 2025 41st lukegustafson 🇺🇸 0 51 36ms 16 Jun 2025 42nd Shanethegamer 🇺🇸 0 52 958ms 13 Dec 2024 42nd error256 0 52 3,650ms 26 Sep 2025 44th kg583 🇺🇸 0 53 12ms 2 Oct 2025 45th Shanethegamer 🇺🇸 0 54 37ms 13 Dec 2024 45th rucin93 🇵🇱 0 54 39ms 24 Feb 2025 45th error256 0 54 25ms 2 May 2025 45th sean-niemann 🇺🇸 0 54 37ms 8 May 2025 49th Natanaelel 🇸🇪 0 55 11ms 8 May 2025 50th kg583 🇺🇸 0 56 414ms 1 Dec 2024 50th kg583 🇺🇸 0 56 2,240ms 3 Oct 2025 52nd edsrzf 🇳🇿 0 57 10ms 10 May 2025 53rd pardouin 🇫🇷 0 58 596ms 24 Feb 2025 53rd kg583 🇺🇸 0 58 8ms 2 Oct 2025 55th lifthrasiir 🇰🇷 0 59 714ms 11 Dec 2024 55th ovs-code 🇩🇪 0 59 528ms 23 Feb 2025 55th sean-niemann 🇺🇸 0 59 414ms 19 May 2025 58th khvdm 0 60 153ms 13 Jan 2025 58th emgordon154 0 60 285ms 9 May 2025 58th emgordon154 0 60 394ms 9 May 2025 61st DialFrost 🇸🇬 0 61 31ms 24 Feb 2025 62nd Andrey-Plotnikov 0 62 24ms 12 Jan 2025 62nd XenThe 🇬🇧 0 62 11ms 15 Jul 2025 64th kg583 🇺🇸 0 63 899ms 1 Dec 2024 64th hallvabo 🇳🇴 0 63 148ms 30 Dec 2024 64th pardouin 🇫🇷 0 63 243ms 24 Feb 2025 64th Shanethegamer 🇺🇸 0 63 168ms 7 May 2025 64th sean-niemann 🇺🇸 0 63 6ms 9 May 2025 64th rucin93 🇵🇱 0 63 6ms 10 May 2025 64th edsrzf 🇳🇿 0 63 5ms 10 May 2025 64th targrik 0 63 6ms 8 Oct 2025 72nd CornerMercury 🇬🇧 0 64 18ms 3 Dec 2024 72nd ndren 0 64 18ms 3 Dec 2024 72nd lifthrasiir 🇰🇷 0 64 191ms 11 Dec 2024 72nd emgordon154 0 64 18ms 9 May 2025 1–75 of 177 Next Last