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 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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 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 401st bricknellj 682 82 17ms 30 Jan 2025 402nd Shanethegamer 🇺🇸 676 76 129ms 13 Dec 2024 403rd DialFrost 🇸🇬 675 48 54ms 16 Dec 2025 404th UnderKoen 🇳🇱 675 139 1,178ms 7 days ago 405th msbranicky 674 83 18ms 5 days ago 406th AlephSquirrel 671 107 20ms 14 May 2025 407th madex 🇩🇪 670 75 439ms 5 days ago 408th CaedenHarper 🇨🇦 668 87 430ms 8 days ago 409th Shanethegamer 🇺🇸 668 124 147ms 3 Jun 2025 410th madex 🇩🇪 662 101 141ms 4 days ago 411th KatieLG 🇬🇧 661 65 11ms 28 hours ago 412th AlephSquirrel 661 76 445ms 3 Dec 2025 413th madex 🇩🇪 661 79 29ms 4 days ago 414th albanian-laundromat 653 80 28ms 8 days ago 415th sean-niemann 🇺🇸 652 90 7ms 10 May 2025 416th madex 🇩🇪 649 121 8ms 4 days ago 417th Shanethegamer 🇺🇸 648 75 71ms 7 May 2025 418th Shanethegamer 🇺🇸 640 65 257ms 13 Dec 2024 419th Yax42 🇫🇷 632 68 12ms 8 days ago 420th madex 🇩🇪 628 87 12ms 5 days ago 421st jusaka 628 89 19ms 3 hours ago 422nd HumanoidCPU 623 133 162ms 8 days ago 423rd IISResetMe 618 58 308ms 6 days ago 424th Shanethegamer 🇺🇸 618 94 383ms 13 Dec 2024 425th Shanethegamer 🇺🇸 615 96 427ms 3 Jun 2025 426th Shanethegamer 🇺🇸 615 114 1,281ms 9 May 2025 427th KatieLG 🇬🇧 613 82 686ms 28 hours ago 428th madex 🇩🇪 605 99 19ms 4 days ago 429th kasarino 602 104 4ms 7 days ago 430th tomh1012 599 97 378ms 8 days ago 431st albanian-laundromat 598 98 135ms 23 Feb 2026 432nd janAkali 🇷🇺 597 99 401ms 23 hours ago 433rd michelebastione 🇮🇹 593 98 454ms 2 days ago 434th Shanethegamer 🇺🇸 593 121 148ms 13 Dec 2024 435th madex 🇩🇪 590 119 1,351ms 4 days ago 436th Solathian 587 46 98ms 6 days ago 437th prestosilver 🇺🇸 563 105 408ms 16 hours ago 438th madex 🇩🇪 563 129 366ms 5 days ago 439th JOrE20 559 100 42ms 15 Dec 2025 440th albanian-laundromat 554 75 238ms 2 Mar 2026 441st Shanethegamer 🇺🇸 549 146 31ms 9 May 2025 442nd JDiLenarda 🇫🇷 536 131 1,330ms 7 days ago 443rd Shanethegamer 🇺🇸 516 50 4,026ms 8 May 2025 444th madex 🇩🇪 514 100 112ms 4 days ago 445th retrohun 504 111 41ms 8 days ago 446th madex 🇩🇪 487 53 952ms 5 days ago 447th HumanoidCPU 484 120 401ms 2 days ago 448th Shanethegamer 🇺🇸 473 85 6ms 13 Dec 2024 449th madex 🇩🇪 471 170 36ms 4 days ago 450th Shanethegamer 🇺🇸 450 107 8ms 9 May 2025 451st AstroOrbis 444 126 23ms 12 Aug 2025 452nd vang1ong7ang 438 189 209ms 17 hours ago 453rd Msleizak 🇫🇷 427 84 302ms 2 days ago 454th madex 🇩🇪 416 78 91ms 4 days ago 455th muser-logiccpu 🇺🇦 368 88 72ms 2 Sep 2025 456th darrenks 🇺🇸 0 6 50ms 8 days ago 456th 2bular 0 6 45ms 8 days ago 456th Natanaelel 🇸🇪 0 6 48ms 8 days ago 456th plcc0 0 6 48ms 7 days ago 460th kg583 🇺🇸 0 9 921ms 14 May 2025 460th themoonisacheese 0 9 2,448ms 16 hours ago 462nd namelessiw 0 13 335ms 25 Oct 2025 463rd AlephSquirrel 0 20 8ms 3 Dec 2025 463rd ovs-code 🇩🇪 0 20 9ms 3 Dec 2025 465th AlephSquirrel 0 27 5ms 3 Dec 2025 465th ovs-code 🇩🇪 0 27 6ms 7 Dec 2025 467th ovs-code 🇩🇪 0 29 125ms 3 Dec 2025 468th Shanethegamer 🇺🇸 0 32 35ms 19 May 2025 469th KatieLG 🇬🇧 0 43 61ms 3 days ago 470th madex 🇩🇪 0 59 1,185ms 5 days ago 471st GolfingSuccess 🇬🇷 0 65 92ms 12 Jan 2026 472nd Shanethegamer 🇺🇸 0 67 92ms 7 May 2025 473rd GolfingSuccess 🇬🇷 0 71 26ms 12 Jan 2026 473rd GolfingSuccess 🇬🇷 0 71 18ms 14 Jan 2026 475th dokutan 0 74 65ms 8 Feb 2026 476th edsrzf 🇳🇿 0 108 1,839ms 21 May 2025 477th btjones0 0 126 168ms 7 days ago 478th edsrzf 🇳🇿 0 136 4,806ms 19 May 2025 First Prev 401–478 of 478