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 stackofbears 752 52 34ms 14 Mar 2025 406th Shanethegamer 🇺🇸 752 114 1,031ms 38 hours ago 407th MeWhenI 🇻🇦 751 89 2,264ms 24 Oct 2024 408th Maznek 750 86 10ms 4 Oct 2024 409th sean-niemann 🇺🇸 750 93 114ms 24 Oct 2024 410th sean-niemann 🇺🇸 750 116 460ms 24 Oct 2024 410th luuumine 🇫🇷 750 116 438ms 15 Dec 2025 412th Shanethegamer 🇺🇸 749 64 36ms 3 Oct 2024 412th Andriamanitra 🇫🇮 749 64 35ms 5 Oct 2024 414th MeWhenI 🇻🇦 749 106 1ms 2 Oct 2024 415th rak1507 🇬🇧 748 38 2ms 30 Dec 2024 416th Shanethegamer 🇺🇸 747 121 89ms 3 Oct 2024 417th Natanaelel 🇸🇪 746 53 3ms 10 Jan 2026 418th commandz0 🇺🇸 746 107 19ms 7 Oct 2024 418th zbreit 🇺🇸 746 107 18ms 29 Oct 2024 418th StardustGogeta 746 107 17ms 30 Oct 2024 418th ZakkkkAttackkkk 🇵🇭 746 107 19ms 8 Feb 2025 418th InigoK 🇺🇸 746 107 19ms 22 Sep 2025 418th Lv0Sys 🇵🇱 746 107 19ms 22 Feb 2026 424th kg583 🇺🇸 745 156 38ms 15 Mar 2026 425th SirBogman 🇺🇸 743 63 277ms 23 Jul 2025 426th Shanethegamer 🇺🇸 743 90 2,379ms 28 Oct 2024 426th ScottHamper 743 90 2,357ms 11 Dec 2025 428th DialFrost 🇸🇬 742 76 802ms 9 Oct 2024 429th KrausRaus 🇺🇸 741 87 12ms 1 Oct 2024 429th GeorgeStechman 🇬🇧 741 87 11ms 24 Oct 2024 429th coreynash 741 87 10ms 13 Feb 2025 432nd Shanethegamer 🇺🇸 739 100 161ms 24 May 2025 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 stefangimmillaro 738 92 8ms 2 Oct 2024 437th Shanethegamer 🇺🇸 738 92 5ms 3 Oct 2024 439th MeWhenI 🇻🇦 738 111 127ms 2 Oct 2024 440th anter69 🇭🇺 737 65 38ms 25 Feb 2026 441st Kacarott 🇦🇺 737 73 1,111ms 1 Oct 2024 441st chunes3 🇺🇸 737 73 1,046ms 2 Oct 2024 443rd DialFrost 🇸🇬 737 131 7ms 11 Dec 2024 444th MeWhenI 🇻🇦 735 34 54ms 2 Oct 2024 444th emgordon154 735 34 62ms 11 Sep 2025 444th plcc0 735 34 69ms 31 Jan 2026 447th edsrzf 🇳🇿 734 52 134ms 16 Jan 2026 448th stefangimmillaro 734 114 376ms 13 Oct 2024 449th kirjavascript 733 88 12ms 15 Mar 2025 450th Shanethegamer 🇺🇸 732 112 109ms 3 Oct 2024 451st Shanethegamer 🇺🇸 731 132 7ms 2 Oct 2024 452nd error256 730 98 513ms 17 Jan 2026 453rd annaproxy 729 132 15ms 1 Oct 2024 454th MeWhenI 🇻🇦 728 88 143ms 2 Oct 2024 454th Shanethegamer 🇺🇸 728 88 138ms 8 Jan 2025 456th Shanethegamer 🇺🇸 727 96 2ms 3 Oct 2024 457th dtbao20 🇻🇳 725 89 11ms 1 Oct 2024 457th madeforlosers 725 89 10ms 17 Oct 2024 457th junkondo-jp 725 89 10ms 14 Dec 2024 457th alexsave 725 89 10ms 20 Jan 2026 461st cros107 🇦🇺 725 110 18ms 1 Jan 2025 461st guilhem-roy 🇫🇷 725 110 19ms 29 May 2025 463rd weeble 724 74 6ms 1 Jul 2025 464th MeWhenI 🇻🇦 724 102 155ms 20 days ago 465th MeWhenI 🇻🇦 724 210 1,935ms 15 hours ago 466th MeWhenI 🇻🇦 723 78 332ms 2 Oct 2024 467th dokutan 722 92 613ms 12 Mar 2026 468th voytxt 🇨🇿 720 89 131ms 17 Apr 2025 469th mousetail 🇳🇱 719 111 20ms 6 Oct 2024 470th snyderek 🇺🇸 719 121 60ms 1 Oct 2024 471st ovs-code 🇩🇪 717 75 1,104ms 1 Oct 2024 472nd SirBogman 🇺🇸 715 93 529ms 23 Jul 2025 472nd snoozingnewt 🇨🇦 715 93 464ms 6 Dec 2025 474th snoozingnewt 🇨🇦 715 95 78ms 23 Oct 2025 475th rzv-me 714 95 6ms 5 Oct 2024 476th MeWhenI 🇻🇦 714 115 453ms 5 Oct 2024 477th h3ra993huskp 🇯🇵 714 131 422ms 30 Nov 2025 478th DialFrost 🇸🇬 713 106 12ms 13 Dec 2024 479th OllieBoyne 🇬🇧 712 112 19ms 17 Oct 2024 479th WillConker 712 112 11ms 22 Oct 2024 First Prev 401–480 of 1,002 Next Last