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 377th Pyroan 729 77 19ms 6 days ago 377th retrohun 729 77 183ms 5 days ago 377th klixel 🇨🇦 729 77 19ms 3 days ago 377th flekAI 729 77 147ms 3 hours ago 405th dokutan 726 101 361ms 45 hours ago 406th MeWhenI 🇻🇦 724 87 4ms 11 days ago 407th plcc0 722 18 9ms 14 days ago 408th solisolu 720 78 41ms 10 Nov 2025 408th Alex-x90 🇺🇸 720 78 19ms 9 hours ago 410th MeWhenI 🇻🇦 720 81 426ms 12 days ago 411th madex 🇩🇪 717 50 896ms 16 days ago 412th Matter1024 🇮🇳 717 83 163ms 7 days ago 413th Andriamanitra 🇫🇮 715 45 37ms 18 days ago 414th edsrzf 🇳🇿 715 94 459ms 20 May 2025 415th Jacob385 712 103 386ms 15 days ago 416th BREMAUCY 🇫🇷 711 79 19ms 19 days ago 416th mishak-sys 711 79 418ms 17 days ago 416th KatieLG 🇬🇧 711 79 18ms 11 days ago 416th ZakkkkAttackkkk 🇵🇭 711 79 45ms 6 days ago 420th Shanethegamer 🇺🇸 708 80 5ms 3 Jun 2025 421st elgan65536 🇺🇸 708 117 156ms 13 days ago 422nd albanian-laundromat 🇺🇸 707 61 13ms 4 Mar 2026 423rd madex 🇩🇪 707 84 359ms 14 days ago 424th madex 🇩🇪 707 94 99ms 15 days ago 425th emgordon154 706 231 1,549ms 15 days ago 426th Shanethegamer 🇺🇸 705 139 328ms 13 Dec 2024 427th Matter1024 🇮🇳 700 46 38ms 19 days ago 428th aadenboy 🇺🇸 699 81 5ms 13 days ago 429th madex 🇩🇪 697 39 9ms 15 days ago 430th Andrey-Plotnikov 695 62 39ms 12 Jan 2025 430th XenThe 🇬🇧 695 62 12ms 15 Jul 2025 430th JOrE20 695 62 31ms 27 Feb 2026 430th Protothor 695 62 13ms 16 days ago 430th madeforlosers 695 62 38ms 11 days ago 430th dokutan 695 62 24ms 45 hours ago 436th Aquateraneal 🇺🇸 693 81 22ms 16 days ago 436th luuumine 🇫🇷 693 81 17ms 16 days ago 438th albanian-laundromat 🇺🇸 690 95 114ms 6 Jan 2026 439th CLOStrophobic 🇮🇹 690 104 23ms 18 Jan 2025 440th dokutan 686 57 1,275ms 45 hours ago 441st KatieLG 🇬🇧 685 47 40ms 11 days ago 442nd albanian-laundromat 🇺🇸 685 75 119ms 5 Jan 2026 443rd bricknellj 685 82 18ms 30 Jan 2025 443rd cros107 🇦🇺 685 82 1,060ms 3 days ago 445th albanian-laundromat 🇺🇸 684 19 4ms 13 Feb 2026 446th DialFrost 🇸🇬 679 48 54ms 16 Dec 2025 446th retrohun 679 48 2,663ms 5 days ago 448th Arkadios200 678 98 111ms 3 days ago 449th msbranicky 677 83 18ms 16 days ago 450th Shanethegamer 🇺🇸 676 76 125ms 13 Dec 2024 451st Jonson26 673 109 350ms 2 days ago 452nd madex 🇩🇪 672 75 465ms 16 days ago 453rd AlephSquirrel 671 107 23ms 14 May 2025 454th CaedenHarper 🇨🇦 670 87 380ms 18 days ago 455th Shanethegamer 🇺🇸 668 124 147ms 3 Jun 2025 456th madex 🇩🇪 665 101 141ms 15 days ago 457th KatieLG 🇬🇧 663 65 12ms 11 days ago 457th flekAI 663 65 13ms 109 mins ago 459th AlephSquirrel 663 76 427ms 3 Dec 2025 460th madex 🇩🇪 661 79 29ms 15 days ago 461st flekAI 655 77 548ms 3 hours ago 462nd albanian-laundromat 🇺🇸 653 80 28ms 18 days ago 463rd flekAI 653 84 7ms 93 mins ago 464th madex 🇩🇪 649 121 8ms 15 days ago 465th Shanethegamer 🇺🇸 648 75 67ms 7 May 2025 466th Shanethegamer 🇺🇸 643 65 254ms 13 Dec 2024 467th Yax42 🇫🇷 634 68 13ms 19 days ago 468th dokutan 632 74 160ms 45 hours ago 469th madex 🇩🇪 631 87 14ms 16 days ago 470th GolfingSuccess 🇬🇷 626 137 91ms 17 days ago 471st HumanoidCPU 623 133 162ms 18 days ago 472nd Shanethegamer 🇺🇸 620 94 371ms 13 Dec 2024 473rd Shanethegamer 🇺🇸 619 96 427ms 3 Jun 2025 474th IISResetMe 618 58 308ms 16 days ago 475th UnderKoen 🇳🇱 617 139 1,195ms 18 days ago 476th KatieLG 🇬🇧 615 82 424ms 11 days ago 477th Shanethegamer 🇺🇸 615 114 1,281ms 9 May 2025 478th brian124634 612 103 4ms 10 days ago 479th madex 🇩🇪 608 99 19ms 15 days ago 480th kasarino 606 104 3ms 18 days ago First Prev 401–480 of 545 Next Last