Card Number Validation in all languages in bytes. 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 Bytes Time Submitted 398th snydej 753 106 20ms 21 Nov 2024 398th andrewjc2000 753 106 19ms 17 Jul 2025 398th qpwoeirut 753 106 11ms 19 Aug 2025 398th KatieLG 🇬🇧 753 106 17ms 11 Feb 2026 405th stefangimmillaro 752 94 1ms 30 Oct 2024 405th emgordon154 752 94 2ms 7 Feb 2026 407th kg583 🇺🇸 752 156 36ms 15 Mar 2026 408th stackofbears 750 52 34ms 14 Mar 2025 409th Maznek 750 86 10ms 4 Oct 2024 410th MeWhenI 🇻🇦 750 89 2,264ms 24 Oct 2024 411th sean-niemann 🇺🇸 749 116 460ms 24 Oct 2024 411th luuumine 🇫🇷 749 116 438ms 15 Dec 2025 413th rak1507 🇬🇧 748 38 2ms 30 Dec 2024 414th Shanethegamer 🇺🇸 748 64 36ms 3 Oct 2024 414th Andriamanitra 🇫🇮 748 64 35ms 5 Oct 2024 416th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 417th sean-niemann 🇺🇸 747 93 114ms 24 Oct 2024 418th Natanaelel 🇸🇪 745 53 3ms 10 Jan 2026 419th commandz0 🇺🇸 745 107 19ms 7 Oct 2024 419th zbreit 🇺🇸 745 107 18ms 29 Oct 2024 419th StardustGogeta 745 107 17ms 30 Oct 2024 419th ZakkkkAttackkkk 🇵🇭 745 107 19ms 8 Feb 2025 419th InigoK 🇺🇸 745 107 19ms 22 Sep 2025 419th Lv0Sys 🇵🇱 745 107 19ms 22 Feb 2026 425th Shanethegamer 🇺🇸 744 121 89ms 3 Oct 2024 426th SirBogman 🇺🇸 741 63 267ms 23 Jul 2025 427th KrausRaus 🇺🇸 741 87 11ms 1 Oct 2024 427th GeorgeStechman 🇬🇧 741 87 14ms 24 Oct 2024 427th coreynash 741 87 11ms 13 Feb 2025 430th Shanethegamer 🇺🇸 741 90 2,379ms 28 Oct 2024 430th ScottHamper 741 90 2,357ms 11 Dec 2025 432nd DialFrost 🇸🇬 740 76 802ms 9 Oct 2024 433rd neihousaigaai 739 108 19ms 4 Oct 2024 433rd StefanHabel 🇨🇦 739 108 20ms 23 Jan 2025 433rd CaedenHarper 🇨🇦 739 108 18ms 22 Jul 2025 436th lifthrasiir 🇰🇷 738 90 473ms 2 Dec 2024 437th anter69 🇭🇺 737 65 38ms 25 Feb 2026 438th stefangimmillaro 736 92 8ms 2 Oct 2024 438th Shanethegamer 🇺🇸 736 92 7ms 3 Oct 2024 440th MeWhenI 🇻🇦 736 111 127ms 2 Oct 2024 441st MeWhenI 🇻🇦 735 34 54ms 2 Oct 2024 441st emgordon154 735 34 62ms 11 Sep 2025 441st plcc0 735 34 69ms 31 Jan 2026 444th Shanethegamer 🇺🇸 735 100 161ms 24 May 2025 445th Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 445th chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 447th DialFrost 🇸🇬 734 131 7ms 11 Dec 2024 448th kirjavascript 733 88 10ms 15 Mar 2025 449th Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 450th edsrzf 🇳🇿 732 52 134ms 16 Jan 2026 451st stefangimmillaro 731 114 376ms 13 Oct 2024 452nd Shanethegamer 🇺🇸 729 112 109ms 3 Oct 2024 453rd Shanethegamer 🇺🇸 729 132 7ms 2 Oct 2024 454th error256 728 98 436ms 17 Jan 2026 455th MeWhenI 🇻🇦 726 88 143ms 2 Oct 2024 455th Shanethegamer 🇺🇸 726 88 138ms 8 Jan 2025 457th dtbao20 🇻🇳 725 89 11ms 1 Oct 2024 457th madeforlosers 725 89 11ms 17 Oct 2024 457th junkondo-jp 725 89 9ms 14 Dec 2024 457th alexsave 725 89 9ms 20 Jan 2026 461st Shanethegamer 🇺🇸 725 96 2ms 3 Oct 2024 462nd cros107 🇦🇺 725 110 18ms 1 Jan 2025 462nd guilhem-roy 🇫🇷 725 110 19ms 29 May 2025 464th annaproxy 723 132 15ms 1 Oct 2024 465th dokutan 722 92 613ms 12 Mar 2026 466th MeWhenI 🇻🇦 721 78 332ms 2 Oct 2024 467th MeWhenI 🇻🇦 721 102 155ms 16 days ago 468th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 469th weeble 720 74 6ms 1 Jul 2025 470th mousetail 🇳🇱 719 111 20ms 6 Oct 2024 471st Shanethegamer 🇺🇸 719 126 1,342ms 2 Oct 2024 472nd voytxt 🇨🇿 718 89 131ms 17 Apr 2025 473rd snyderek 🇺🇸 718 121 60ms 1 Oct 2024 474th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 475th SirBogman 🇺🇸 714 93 529ms 23 Jul 2025 475th snoozingnewt 🇨🇦 714 93 464ms 6 Dec 2025 477th rzv-me 713 95 7ms 5 Oct 2024 478th DialFrost 🇸🇬 713 106 12ms 13 Dec 2024 479th h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 480th OllieBoyne 🇬🇧 712 112 19ms 17 Oct 2024 First Prev 401–480 of 936 Next Last