Card Number Validation 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 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 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 Calendar 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 Multitap Input NFA Simulator 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Calendar 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 Multitap Input NFA Simulator 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 Chars Time Submitted 375th madeforlosers 723 89 8ms 17 Oct 2024 375th junkondo-jp 723 89 9ms 14 Dec 2024 378th annaproxy 723 132 14ms 1 Oct 2024 379th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 380th weeble 720 74 6ms 1 Jul 2025 381st MeWhenI 🇻🇦 720 78 287ms 2 Oct 2024 382nd Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 383rd nwellnhof 🇩🇪 718 90 18ms 1 Oct 2024 383rd ovs-code 🇩🇪 718 90 15ms 3 Oct 2024 383rd ryyyn 🇺🇸 718 90 19ms 26 Jul 2025 383rd luuumine 🇫🇷 718 90 16ms 8 Oct 2025 383rd JOrE20 🇺🇸 718 90 18ms 7 days ago 388th ovs-code 🇩🇪 716 81 122ms 17 Apr 2025 389th alexsave 715 90 9ms 28 Oct 2024 390th h3ra993huskp 🇯🇵 712 131 497ms 8 days ago 391st rzv-me 711 95 5ms 5 Oct 2024 392nd snyderek 🇺🇸 711 121 57ms 1 Oct 2024 393rd 5cw 🇺🇸 710 91 17ms 1 Oct 2024 393rd stefangimmillaro 710 91 16ms 13 Oct 2024 393rd dokutan 710 91 10ms 19 Oct 2024 393rd GrayJoKing 🇦🇺 710 91 18ms 2 Jul 2025 397th Natanaelel 🇸🇪 709 55 42ms 1 Mar 2025 398th DialFrost 🇸🇬 709 106 11ms 13 Dec 2024 399th GrayJoKing 🇦🇺 707 82 127ms 1 Oct 2024 400th DialFrost 🇸🇬 707 132 213ms 8 Apr 2025 401st Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 402nd MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 403rd cbrt-x 703 157 139ms 1 Oct 2024 404th janlelis 702 68 35ms 1 Oct 2024 404th tatzyr 🇯🇵 702 68 33ms 23 Dec 2024 406th emgordon154 702 76 5ms 7 Jun 2025 407th Shanethegamer 🇺🇸 702 92 16ms 3 Oct 2024 407th error256 702 92 20ms 7 Oct 2024 407th thatbirdguythatuknownot 702 92 16ms 14 Oct 2024 410th sean-niemann 🇺🇸 701 82 373ms 23 Dec 2024 411th mousetail 🇳🇱 701 133 152ms 3 Oct 2024 412th LukeBridges 🇬🇧 700 92 9ms 3 Oct 2024 413th BlankSpruce 699 123 388ms 1 Oct 2024 414th emgordon154 696 134 213ms 25 Feb 2025 415th tobeannouncd 695 159 146ms 13 Dec 2024 416th Bulmenisaurus 694 93 15ms 6 Oct 2024 416th lynn 694 93 16ms 8 Jan 2025 416th RaBa21 🇭🇺 694 93 17ms 19 Jul 2025 416th KasperKivimaeki 🇫🇮 694 93 17ms 8 days ago 420th Alex-x90 🇺🇸 694 124 382ms 1 Oct 2024 420th Herbert00709 🇵🇱 694 124 58ms 14 Jun 2025 422nd Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 423rd Shanethegamer 🇺🇸 693 83 357ms 5 Oct 2024 424th xyangst 692 93 11ms 1 Oct 2024 424th Salutations45 692 93 10ms 17 Nov 2024 424th strattonwhisler 692 93 9ms 26 Mar 2025 427th NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 428th pardouin 🇫🇷 688 57 5ms 3 Oct 2024 429th DialFrost 🇸🇬 687 94 15ms 1 Oct 2024 430th dokutan 687 116 7ms 19 Oct 2024 431st MeWhenI 🇻🇦 686 68 223ms 2 Oct 2024 432nd Alex-x90 🇺🇸 686 100 2ms 1 Oct 2024 433rd Lv0Sys 🇵🇱 685 94 9ms 15 Jun 2025 433rd XenThe 🇬🇧 685 94 9ms 7 Jul 2025 435th error256 685 104 367ms 14 Oct 2024 436th ovs-code 🇩🇪 684 84 372ms 3 Oct 2024 437th KatieLG 🇬🇧 682 70 35ms 2 Oct 2025 438th aDwarfNamedUrist 682 162 138ms 1 Sep 2025 439th MeWhenI 🇻🇦 681 108 179ms 2 Oct 2024 440th Shanethegamer 🇺🇸 679 65 2ms 1 Oct 2024 441st emgordon154 679 101 2ms 25 Nov 2024 442nd the-zammers 678 163 149ms 1 Dec 2024 443rd Shanethegamer 🇺🇸 677 172 42ms 2 Oct 2024 444th plcc0 676 37 69ms 6 Apr 2025 445th snoozingnewt 🇨🇦 676 95 75ms 23 Oct 2025 446th MeWhenI 🇻🇦 673 96 16ms 30 Jul 2025 447th jerrandolph 673 177 285ms 25 Sep 2025 447th CaedenHarper 🇨🇦 673 177 278ms 20 days ago 449th tailorspy 672 128 389ms 4 Oct 2024 450th edsrzf 🇳🇿 671 99 2,890ms 5 Jul 2025 First Prev 376–450 of 839 Next Last