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 380th jameswmccarty 730 77 19ms 11 days ago 380th mantaslu 🇱🇹 730 77 18ms 11 days ago 380th firegene 🇮🇪 730 77 18ms 11 days ago 380th Pyroan 730 77 19ms 8 days ago 380th retrohun 730 77 183ms 8 days ago 380th klixel 🇨🇦 730 77 19ms 6 days ago 380th flekAI 730 77 147ms 2 days ago 380th FoxInTheClouds 730 77 27ms 2 hours ago 409th dokutan 728 101 361ms 4 days ago 410th MeWhenI 🇻🇦 725 87 4ms 13 days ago 411th MeWhenI 🇻🇦 723 81 426ms 14 days ago 412th plcc0 722 18 9ms 16 days ago 413th Matter1024 🇮🇳 722 83 163ms 9 days ago 414th madex 🇩🇪 721 50 896ms 18 days ago 415th solisolu 721 78 41ms 10 Nov 2025 415th Alex-x90 🇺🇸 721 78 19ms 2 days ago 417th edsrzf 🇳🇿 718 94 459ms 20 May 2025 418th Andriamanitra 🇫🇮 716 45 37ms 21 days ago 419th BREMAUCY 🇫🇷 711 79 19ms 21 days ago 419th mishak-sys 711 79 418ms 19 days ago 419th KatieLG 🇬🇧 711 79 18ms 13 days ago 419th ZakkkkAttackkkk 🇵🇭 711 79 45ms 8 days ago 423rd Shanethegamer 🇺🇸 711 80 5ms 3 Jun 2025 424th madex 🇩🇪 711 94 99ms 17 days ago 425th elgan65536 🇺🇸 711 117 156ms 16 days ago 426th madex 🇩🇪 710 84 359ms 17 days ago 427th Shanethegamer 🇺🇸 708 139 328ms 13 Dec 2024 428th albanian-laundromat 🇺🇸 707 61 13ms 4 Mar 2026 429th emgordon154 706 231 1,663ms 17 days ago 430th aadenboy 🇺🇸 703 81 5ms 15 days ago 431st Matter1024 🇮🇳 700 46 38ms 21 days ago 432nd madex 🇩🇪 697 39 9ms 17 days ago 433rd Andrey-Plotnikov 696 62 39ms 12 Jan 2025 433rd XenThe 🇬🇧 696 62 12ms 15 Jul 2025 433rd JOrE20 696 62 31ms 27 Feb 2026 433rd Protothor 696 62 13ms 18 days ago 433rd madeforlosers 696 62 36ms 13 days ago 433rd dokutan 696 62 24ms 4 days ago 439th Aquateraneal 🇺🇸 694 81 22ms 18 days ago 439th luuumine 🇫🇷 694 81 17ms 18 days ago 441st albanian-laundromat 🇺🇸 690 95 114ms 6 Jan 2026 442nd CLOStrophobic 🇮🇹 690 104 23ms 18 Jan 2025 443rd albanian-laundromat 🇺🇸 689 75 119ms 5 Jan 2026 444th dokutan 688 57 1,275ms 4 days ago 445th KatieLG 🇬🇧 685 47 40ms 13 days ago 446th zakariamouhid 685 63 12ms 10 hours ago 447th bricknellj 685 82 18ms 30 Jan 2025 447th cros107 🇦🇺 685 82 1,060ms 5 days ago 449th albanian-laundromat 🇺🇸 684 19 4ms 13 Feb 2026 450th DialFrost 🇸🇬 682 48 54ms 16 Dec 2025 450th retrohun 682 48 2,663ms 8 days ago 452nd Arkadios200 682 98 111ms 5 days ago 453rd Shanethegamer 🇺🇸 680 76 125ms 13 Dec 2024 454th msbranicky 677 83 18ms 18 days ago 455th Jonson26 674 109 350ms 4 days ago 456th CaedenHarper 🇨🇦 673 87 380ms 20 days ago 457th madex 🇩🇪 672 75 465ms 18 days ago 458th AlephSquirrel 671 107 23ms 14 May 2025 459th Shanethegamer 🇺🇸 671 124 147ms 3 Jun 2025 460th madex 🇩🇪 668 101 141ms 17 days ago 461st KatieLG 🇬🇧 664 65 12ms 13 days ago 461st flekAI 664 65 12ms 2 days ago 463rd AlephSquirrel 663 76 427ms 3 Dec 2025 464th madex 🇩🇪 661 79 29ms 17 days ago 465th madex 🇩🇪 658 121 8ms 17 days ago 466th flekAI 655 77 548ms 2 days ago 467th albanian-laundromat 🇺🇸 653 80 28ms 20 days ago 468th flekAI 653 84 7ms 2 days ago 469th Shanethegamer 🇺🇸 648 75 67ms 7 May 2025 470th Shanethegamer 🇺🇸 646 65 254ms 13 Dec 2024 471st caleblin125 646 87 19ms 3 hours ago 472nd Yax42 🇫🇷 635 68 13ms 21 days ago 473rd dokutan 632 74 160ms 4 days ago 474th madex 🇩🇪 631 87 14ms 18 days ago 475th GolfingSuccess 🇬🇷 626 137 91ms 19 days ago 476th HumanoidCPU 625 133 162ms 20 days ago 477th Shanethegamer 🇺🇸 623 94 371ms 13 Dec 2024 478th Shanethegamer 🇺🇸 622 96 427ms 3 Jun 2025 479th IISResetMe 621 58 308ms 18 days ago 480th Shanethegamer 🇺🇸 619 114 1,281ms 9 May 2025 First Prev 401–480 of 579 Next Last