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 397th andrewjc2000 752 106 17ms 17 Jul 2025 397th qpwoeirut 752 106 10ms 19 Aug 2025 397th KatieLG 🇬🇧 752 106 17ms 11 Feb 2026 404th kg583 🇺🇸 752 156 36ms 23 days ago 405th stackofbears 750 52 34ms 14 Mar 2025 406th Maznek 750 86 11ms 4 Oct 2024 407th MeWhenI 🇻🇦 750 89 2,264ms 24 Oct 2024 408th sean-niemann 🇺🇸 749 116 459ms 24 Oct 2024 408th luuumine 🇫🇷 749 116 448ms 15 Dec 2025 410th Shanethegamer 🇺🇸 748 64 36ms 3 Oct 2024 410th Andriamanitra 🇫🇮 748 64 35ms 5 Oct 2024 412th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 413th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 414th sean-niemann 🇺🇸 747 93 114ms 24 Oct 2024 415th Natanaelel 🇸🇪 745 53 3ms 10 Jan 2026 416th commandz0 🇺🇸 745 107 17ms 7 Oct 2024 416th zbreit 🇺🇸 745 107 16ms 29 Oct 2024 416th StardustGogeta 745 107 17ms 30 Oct 2024 416th ZakkkkAttackkkk 🇵🇭 745 107 16ms 8 Feb 2025 416th InigoK 🇺🇸 745 107 17ms 22 Sep 2025 416th Lv0Sys 🇵🇱 745 107 17ms 22 Feb 2026 422nd Shanethegamer 🇺🇸 744 121 89ms 3 Oct 2024 423rd SirBogman 🇺🇸 741 63 312ms 23 Jul 2025 424th KrausRaus 🇺🇸 741 87 10ms 1 Oct 2024 424th GeorgeStechman 🇬🇧 741 87 13ms 24 Oct 2024 424th coreynash 741 87 10ms 13 Feb 2025 427th Shanethegamer 🇺🇸 741 90 2,577ms 28 Oct 2024 427th ScottHamper 741 90 2,357ms 11 Dec 2025 429th DialFrost 🇸🇬 740 76 806ms 9 Oct 2024 430th neihousaigaai 739 108 17ms 4 Oct 2024 430th StefanHabel 🇨🇦 739 108 15ms 23 Jan 2025 430th CaedenHarper 🇨🇦 739 108 17ms 22 Jul 2025 433rd lifthrasiir 🇰🇷 738 90 430ms 2 Dec 2024 434th anter69 🇭🇺 737 65 38ms 25 Feb 2026 435th stefangimmillaro 736 92 8ms 2 Oct 2024 435th Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 437th MeWhenI 🇻🇦 736 111 127ms 2 Oct 2024 438th MeWhenI 🇻🇦 735 34 54ms 2 Oct 2024 438th emgordon154 735 34 62ms 11 Sep 2025 438th plcc0 735 34 69ms 31 Jan 2026 441st Shanethegamer 🇺🇸 735 100 161ms 24 May 2025 442nd Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 442nd chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 444th DialFrost 🇸🇬 734 131 7ms 11 Dec 2024 445th kirjavascript 733 88 11ms 15 Mar 2025 446th Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 447th edsrzf 🇳🇿 732 52 139ms 16 Jan 2026 448th stefangimmillaro 731 114 376ms 13 Oct 2024 449th Shanethegamer 🇺🇸 729 112 109ms 3 Oct 2024 450th Shanethegamer 🇺🇸 729 132 8ms 2 Oct 2024 451st error256 728 98 436ms 17 Jan 2026 452nd MeWhenI 🇻🇦 726 88 136ms 2 Oct 2024 452nd Shanethegamer 🇺🇸 726 88 133ms 8 Jan 2025 454th cros107 🇦🇺 725 110 17ms 1 Jan 2025 454th guilhem-roy 🇫🇷 725 110 17ms 29 May 2025 456th dtbao20 🇻🇳 724 89 11ms 1 Oct 2024 456th madeforlosers 724 89 10ms 17 Oct 2024 456th junkondo-jp 724 89 10ms 14 Dec 2024 456th alexsave 724 89 10ms 20 Jan 2026 460th Shanethegamer 🇺🇸 723 96 2ms 3 Oct 2024 461st annaproxy 723 132 15ms 1 Oct 2024 462nd dokutan 722 92 392ms 26 days ago 463rd MeWhenI 🇻🇦 721 78 316ms 2 Oct 2024 464th MeWhenI 🇻🇦 721 102 155ms 11 days ago 465th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 466th weeble 720 74 6ms 1 Jul 2025 467th mousetail 🇳🇱 719 111 17ms 6 Oct 2024 468th Shanethegamer 🇺🇸 719 126 1,342ms 2 Oct 2024 469th voytxt 🇨🇿 718 89 151ms 17 Apr 2025 470th snyderek 🇺🇸 718 121 56ms 1 Oct 2024 471st ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 472nd SirBogman 🇺🇸 714 93 503ms 23 Jul 2025 472nd snoozingnewt 🇨🇦 714 93 410ms 6 Dec 2025 474th h3ra993huskp 🇯🇵 714 131 422ms 30 Nov 2025 475th rzv-me 713 95 6ms 5 Oct 2024 476th DialFrost 🇸🇬 713 106 12ms 13 Dec 2024 477th OllieBoyne 🇬🇧 712 112 17ms 17 Oct 2024 477th WillConker 712 112 11ms 22 Oct 2024 477th maxgodfrey2004 🇨🇦 712 112 10ms 4 Jan 2025 477th Babafaba 712 112 16ms 11 Nov 2025 First Prev 401–480 of 934 Next Last