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 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 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 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 Chars Time Submitted 376th zacjl 724 110 6ms 10 Oct 2024 377th Shanethegamer 🇺🇸 724 126 1,275ms 2 Oct 2024 378th dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 378th madeforlosers 723 89 8ms 17 Oct 2024 378th junkondo-jp 723 89 9ms 14 Dec 2024 381st annaproxy 723 132 14ms 1 Oct 2024 382nd MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 383rd weeble 720 74 6ms 1 Jul 2025 384th MeWhenI 🇻🇦 720 78 287ms 2 Oct 2024 385th Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 386th nwellnhof 🇩🇪 718 90 18ms 1 Oct 2024 386th ovs-code 🇩🇪 718 90 15ms 3 Oct 2024 386th ryyyn 🇺🇸 718 90 19ms 26 Jul 2025 386th luuumine 🇫🇷 718 90 16ms 8 Oct 2025 386th JOrE20 🇺🇸 718 90 18ms 14 days ago 391st ovs-code 🇩🇪 716 81 122ms 17 Apr 2025 392nd alexsave 715 90 9ms 28 Oct 2024 393rd snyderek 🇺🇸 712 121 58ms 1 Oct 2024 394th h3ra993huskp 🇯🇵 712 131 497ms 15 days ago 395th rzv-me 711 95 5ms 5 Oct 2024 396th 5cw 🇺🇸 710 91 17ms 1 Oct 2024 396th stefangimmillaro 710 91 16ms 13 Oct 2024 396th dokutan 710 91 10ms 19 Oct 2024 396th GrayJoKing 🇦🇺 710 91 18ms 2 Jul 2025 400th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 401st DialFrost 🇸🇬 709 106 11ms 13 Dec 2024 402nd GrayJoKing 🇦🇺 707 82 127ms 1 Oct 2024 403rd DialFrost 🇸🇬 707 132 225ms 8 Apr 2025 404th Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 405th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 405th emgordon154 704 115 95ms 6 days ago 407th cbrt-x 703 157 139ms 1 Oct 2024 408th janlelis 702 68 35ms 1 Oct 2024 408th tatzyr 🇯🇵 702 68 33ms 23 Dec 2024 410th emgordon154 702 76 5ms 7 Jun 2025 411th Shanethegamer 🇺🇸 702 92 16ms 3 Oct 2024 411th error256 702 92 20ms 7 Oct 2024 411th thatbirdguythatuknownot 702 92 16ms 14 Oct 2024 414th sean-niemann 🇺🇸 701 82 373ms 23 Dec 2024 415th BlankSpruce 701 123 378ms 1 Oct 2024 416th mousetail 🇳🇱 701 133 149ms 3 Oct 2024 417th LukeBridges 🇬🇧 700 92 9ms 3 Oct 2024 418th emgordon154 696 134 224ms 25 Feb 2025 419th Bulmenisaurus 695 93 15ms 6 Oct 2024 419th lynn 695 93 16ms 8 Jan 2025 419th RaBa21 🇭🇺 695 93 17ms 19 Jul 2025 419th KasperKivimaeki 🇫🇮 695 93 17ms 15 days ago 423rd Alex-x90 🇺🇸 695 124 387ms 1 Oct 2024 423rd Herbert00709 🇵🇱 695 124 57ms 14 Jun 2025 425th tobeannouncd 695 159 146ms 13 Dec 2024 426th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 427th Shanethegamer 🇺🇸 693 83 357ms 5 Oct 2024 428th xyangst 692 93 10ms 1 Oct 2024 428th Salutations45 692 93 10ms 17 Nov 2024 428th strattonwhisler 692 93 9ms 26 Mar 2025 431st NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 432nd pardouin 🇫🇷 688 57 4ms 3 Oct 2024 433rd DialFrost 🇸🇬 687 94 15ms 1 Oct 2024 434th dokutan 687 116 7ms 19 Oct 2024 435th MeWhenI 🇻🇦 686 68 300ms 2 Oct 2024 436th Alex-x90 🇺🇸 686 100 2ms 1 Oct 2024 437th XenThe 🇬🇧 685 94 9ms 7 Jul 2025 438th error256 685 104 425ms 14 Oct 2024 439th ovs-code 🇩🇪 684 84 372ms 3 Oct 2024 440th KatieLG 🇬🇧 682 70 35ms 2 Oct 2025 441st aDwarfNamedUrist 682 162 138ms 1 Sep 2025 442nd MeWhenI 🇻🇦 681 108 163ms 2 Oct 2024 443rd Shanethegamer 🇺🇸 679 65 2ms 1 Oct 2024 444th emgordon154 679 101 2ms 25 Nov 2024 445th the-zammers 678 163 149ms 1 Dec 2024 446th Shanethegamer 🇺🇸 677 172 39ms 2 Oct 2024 447th plcc0 676 37 69ms 6 Apr 2025 448th snoozingnewt 🇨🇦 676 95 79ms 23 Oct 2025 449th MeWhenI 🇻🇦 673 96 16ms 30 Jul 2025 450th edsrzf 🇳🇿 673 99 2,890ms 5 Jul 2025 First Prev 376–450 of 845 Next Last