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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 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 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 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 ArkScript 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 ArkScript 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 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 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 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 401st ovs-code 🇩🇪 716 81 133ms 17 Apr 2025 402nd snyderek 🇺🇸 715 121 53ms 1 Oct 2024 403rd h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 404th rzv-me 711 95 6ms 5 Oct 2024 405th 5cw 🇺🇸 710 91 17ms 1 Oct 2024 405th stefangimmillaro 710 91 16ms 13 Oct 2024 405th dokutan 710 91 10ms 19 Oct 2024 405th GrayJoKing 🇦🇺 710 91 18ms 2 Jul 2025 409th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 410th DialFrost 🇸🇬 709 106 12ms 13 Dec 2024 411th GrayJoKing 🇦🇺 707 82 134ms 1 Oct 2024 412th DialFrost 🇸🇬 707 132 214ms 8 Apr 2025 413th Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 414th cbrt-x 706 157 139ms 1 Oct 2024 415th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 416th janlelis 703 68 41ms 1 Oct 2024 416th tatzyr 🇯🇵 703 68 40ms 23 Dec 2024 418th BlankSpruce 703 123 408ms 1 Oct 2024 419th emgordon154 702 76 5ms 7 Jun 2025 420th Shanethegamer 🇺🇸 702 92 16ms 3 Oct 2024 420th error256 702 92 20ms 7 Oct 2024 420th thatbirdguythatuknownot 702 92 16ms 14 Oct 2024 423rd mousetail 🇳🇱 701 133 153ms 3 Oct 2024 424th LukeBridges 🇬🇧 700 92 9ms 3 Oct 2024 425th Alex-x90 🇺🇸 698 124 406ms 1 Oct 2024 425th Herbert00709 🇵🇱 698 124 56ms 14 Jun 2025 427th tobeannouncd 697 159 146ms 13 Dec 2024 428th emgordon154 696 134 214ms 25 Feb 2025 429th Bulmenisaurus 695 93 15ms 6 Oct 2024 429th lynn 695 93 16ms 8 Jan 2025 429th RaBa21 🇭🇺 695 93 17ms 19 Jul 2025 429th KasperKivimaeki 🇫🇮 695 93 17ms 30 Nov 2025 429th blaztoma 🇱🇹 695 93 16ms 18 Dec 2025 434th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 435th Shanethegamer 🇺🇸 693 83 444ms 5 Oct 2024 436th xyangst 692 93 10ms 1 Oct 2024 436th Salutations45 692 93 10ms 17 Nov 2024 436th strattonwhisler 692 93 9ms 26 Mar 2025 439th pardouin 🇫🇷 690 57 4ms 3 Oct 2024 440th NickTheEASDude 🇺🇸 688 115 3ms 17 Dec 2024 441st DialFrost 🇸🇬 687 94 15ms 1 Oct 2024 442nd Alex-x90 🇺🇸 687 100 2ms 1 Oct 2024 443rd dokutan 687 116 7ms 19 Oct 2024 444th MeWhenI 🇻🇦 686 68 285ms 2 Oct 2024 445th XenThe 🇬🇧 685 94 10ms 7 Jul 2025 446th ovs-code 🇩🇪 684 84 489ms 3 Oct 2024 447th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 448th KatieLG 🇬🇧 683 70 39ms 2 Oct 2025 449th MeWhenI 🇻🇦 681 108 141ms 2 Oct 2024 450th emgordon154 680 101 2ms 25 Nov 2024 451st the-zammers 680 163 149ms 1 Dec 2024 452nd Shanethegamer 🇺🇸 677 172 39ms 2 Oct 2024 453rd plcc0 676 37 69ms 6 Apr 2025 454th snoozingnewt 🇨🇦 676 95 79ms 23 Oct 2025 455th tailorspy 676 128 403ms 4 Oct 2024 456th edsrzf 🇳🇿 674 99 3,137ms 5 Jul 2025 456th jkelly467 674 99 3,674ms 7 days ago 458th MeWhenI 🇻🇦 673 96 16ms 30 Jul 2025 459th jerrandolph 673 177 257ms 25 Sep 2025 459th CaedenHarper 🇨🇦 673 177 247ms 17 Nov 2025 461st Yax42 🇫🇷 671 129 70ms 21 days ago 462nd HumanoidCPU 670 96 10ms 7 Mar 2025 463rd emgordon154 670 115 138ms 9 Dec 2025 464th error256 669 101 5ms 24 Oct 2024 465th MeWhenI 🇻🇦 669 174 41ms 13 Feb 2025 466th Shanethegamer 🇺🇸 668 65 2ms 1 Oct 2024 467th madex 🇩🇪 667 103 1ms 2 Oct 2024 468th CaedenHarper 🇨🇦 667 140 594ms 3 Oct 2025 469th dbut2 🇦🇺 666 179 236ms 31 Oct 2024 470th emgordon154 665 111 4ms 12 Jan 2025 471st two-bad 🇬🇧 664 97 10ms 2 Oct 2024 471st LordSir101 664 97 9ms 10 Aug 2025 473rd snoozingnewt 🇨🇦 662 180 243ms 2 Nov 2025 474th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 475th BlankSpruce 661 104 2ms 1 Oct 2024 476th MeWhenI 🇻🇦 659 88 131ms 2 Oct 2024 476th Shanethegamer 🇺🇸 659 88 140ms 5 Oct 2024 478th GolfingSuccess 🇬🇷 659 98 16ms 5 Oct 2024 478th firegene 🇮🇪 659 98 17ms 21 Oct 2024 478th JunkIce 659 98 10ms 3 Dec 2024 First Prev 401–480 of 866 Next Last