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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript 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 ><> 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 ALGOL 68 APL ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 401st lifthrasiir 🇰🇷 736 90 478ms 2 Dec 2024 402nd MeWhenI 🇻🇦 736 111 116ms 2 Oct 2024 403rd MeWhenI 🇻🇦 735 34 58ms 2 Oct 2024 403rd emgordon154 735 34 69ms 11 Sep 2025 403rd plcc0 735 34 68ms 6 days ago 406th stefangimmillaro 735 92 8ms 2 Oct 2024 406th Shanethegamer 🇺🇸 735 92 5ms 3 Oct 2024 408th Shanethegamer 🇺🇸 735 100 122ms 24 May 2025 409th Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 409th chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 411th Shanethegamer 🇺🇸 733 116 1,026ms 1 Oct 2024 412th kirjavascript 731 88 10ms 15 Mar 2025 413th Shanethegamer 🇺🇸 731 101 4ms 2 Oct 2024 414th stefangimmillaro 731 114 326ms 13 Oct 2024 415th edsrzf 🇳🇿 730 52 113ms 21 days ago 416th MeWhenI 🇻🇦 730 174 41ms 13 Feb 2025 417th anter69 🇭🇺 729 78 1,271ms 1 Oct 2024 418th Shanethegamer 🇺🇸 729 112 99ms 3 Oct 2024 419th Shanethegamer 🇺🇸 729 156 30ms 2 Oct 2024 420th error256 728 98 416ms 20 days ago 421st MeWhenI 🇻🇦 726 88 131ms 2 Oct 2024 421st Shanethegamer 🇺🇸 726 88 140ms 8 Jan 2025 423rd cros107 🇦🇺 725 110 18ms 1 Jan 2025 423rd guilhem-roy 🇫🇷 725 110 17ms 29 May 2025 423rd Lv0Sys 🇵🇱 725 110 17ms 10 Dec 2025 426th Shanethegamer 🇺🇸 724 126 1,391ms 2 Oct 2024 427th dtbao20 🇻🇳 723 89 9ms 1 Oct 2024 427th madeforlosers 723 89 9ms 17 Oct 2024 427th junkondo-jp 723 89 10ms 14 Dec 2024 427th alexsave 723 89 10ms 18 days ago 431st annaproxy 723 132 14ms 1 Oct 2024 432nd MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 433rd weeble 720 74 6ms 1 Jul 2025 434th MeWhenI 🇻🇦 720 78 309ms 2 Oct 2024 435th Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 436th voytxt 🇨🇿 718 89 136ms 17 Apr 2025 437th mousetail 🇳🇱 718 111 17ms 6 Oct 2024 438th snyderek 🇺🇸 716 121 53ms 1 Oct 2024 439th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 440th anter69 🇭🇺 713 67 38ms 1 Oct 2024 441st SirBogman 🇺🇸 713 93 510ms 23 Jul 2025 441st snoozingnewt 🇨🇦 713 93 469ms 6 Dec 2025 443rd h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 444th OllieBoyne 🇬🇧 712 112 17ms 17 Oct 2024 444th WillConker 712 112 12ms 22 Oct 2024 444th maxgodfrey2004 🇨🇦 712 112 10ms 4 Jan 2025 444th Babafaba 712 112 17ms 11 Nov 2025 448th rzv-me 711 95 6ms 5 Oct 2024 449th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 450th snoozingnewt 🇨🇦 709 95 79ms 23 Oct 2025 451st DialFrost 🇸🇬 709 106 12ms 13 Dec 2024 452nd DialFrost 🇸🇬 707 132 214ms 8 Apr 2025 453rd Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 454th cbrt-x 706 157 139ms 1 Oct 2024 455th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 456th Alex-x90 🇺🇸 705 100 2ms 1 Oct 2024 457th SB-945 705 113 18ms 1 Oct 2024 457th Artemis21 🇬🇧 705 113 17ms 23 Jan 2025 457th fkantelberg 705 113 10ms 11 Jul 2025 460th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 461st BlankSpruce 704 123 408ms 1 Oct 2024 462nd janlelis 703 68 41ms 1 Oct 2024 463rd emgordon154 702 76 5ms 7 Jun 2025 464th mousetail 🇳🇱 701 133 153ms 3 Oct 2024 465th LukeBridges 🇬🇧 700 92 9ms 3 Oct 2024 466th HumanoidCPU 699 114 65ms 7 Mar 2025 467th Alex-x90 🇺🇸 699 124 406ms 1 Oct 2024 467th Herbert00709 🇵🇱 699 124 56ms 14 Jun 2025 469th emgordon154 698 101 2ms 25 Nov 2024 470th tobeannouncd 697 159 146ms 13 Dec 2024 471st emgordon154 696 134 214ms 25 Feb 2025 472nd Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 473rd jipsong 🇩🇪 693 115 16ms 12 May 2025 473rd luuumine 🇫🇷 693 115 18ms 2 Dec 2025 473rd Bmrl7 693 115 12ms 25 Dec 2025 473rd KatieLG 🇬🇧 693 115 20ms 27 days ago 477th Salutations45 692 93 10ms 17 Nov 2024 477th strattonwhisler 692 93 9ms 26 Mar 2025 479th pardouin 🇫🇷 690 57 4ms 3 Oct 2024 480th NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 First Prev 401–480 of 876 Next Last