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 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 Chars Time Submitted 321st ovs-code 🇩🇪 764 122 160ms 25 Apr 2025 322nd emplv 🇱🇻 763 76 136ms 29 Oct 2024 323rd albanian-laundromat 763 118 84ms 13 Nov 2025 324th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 325th inventshah 760 85 22ms 4 Oct 2024 325th Artemis21 🇬🇧 760 85 11ms 10 Jan 2025 325th keelimeguy 🇺🇸 760 85 19ms 14 Jun 2025 328th emgordon154 759 63 35ms 18 Nov 2024 328th SirBogman 🇺🇸 759 63 33ms 19 Jul 2025 330th MeWhenI 🇻🇦 759 89 5ms 2 Oct 2024 331st weliveinhell 🇭🇹 757 85 9ms 1 Oct 2024 331st SteRoy 757 85 10ms 13 May 2025 333rd AlephSquirrel 756 76 445ms 1 Oct 2024 334th DialFrost 🇸🇬 754 131 7ms 11 Dec 2024 335th 0xjac 🇨🇭 754 158 284ms 17 Jun 2025 336th GrayJoKing 🇦🇺 751 90 5ms 1 Oct 2024 337th stackofbears 750 52 35ms 14 Mar 2025 338th MeWhenI 🇻🇦 750 89 2,127ms 24 Oct 2024 339th DialFrost 🇸🇬 749 75 825ms 10 Oct 2024 340th MeWhenI 🇻🇦 749 162 26ms 2 Oct 2024 341st Maznek 748 86 10ms 4 Oct 2024 342nd MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 343rd Shanethegamer 🇺🇸 748 132 7ms 2 Oct 2024 344th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 345th Shanethegamer 🇺🇸 747 64 35ms 3 Oct 2024 345th Andriamanitra 🇫🇮 747 64 40ms 5 Oct 2024 347th Babafaba 747 77 496ms 11 Nov 2025 348th luuumine 🇫🇷 747 92 1ms 5 Dec 2025 348th bzd7 747 92 2ms 7 Dec 2025 350th sean-niemann 🇺🇸 747 116 411ms 24 Oct 2024 350th luuumine 🇫🇷 747 116 430ms 15 Dec 2025 352nd Shanethegamer 🇺🇸 744 121 98ms 3 Oct 2024 353rd sean-niemann 🇺🇸 743 93 120ms 24 Oct 2024 354th Natanaelel 🇸🇪 742 53 3ms 10 Jan 2026 355th SirBogman 🇺🇸 741 63 283ms 23 Jul 2025 356th Shanethegamer 🇺🇸 741 90 2,349ms 28 Oct 2024 356th ScottHamper 741 90 2,298ms 11 Dec 2025 358th KrausRaus 🇺🇸 740 87 9ms 1 Oct 2024 358th GeorgeStechman 🇬🇧 740 87 9ms 24 Oct 2024 358th coreynash 740 87 9ms 13 Feb 2025 358th kirjavascript 740 87 11ms 22 Jul 2025 362nd sean-niemann 🇺🇸 739 93 3ms 24 Oct 2024 363rd HumanoidCPU 737 78 438ms 7 Mar 2025 364th MeWhenI 🇻🇦 736 111 116ms 2 Oct 2024 365th MeWhenI 🇻🇦 735 34 58ms 2 Oct 2024 365th emgordon154 735 34 69ms 11 Sep 2025 365th plcc0 735 34 68ms 6 days ago 368th stefangimmillaro 735 92 8ms 2 Oct 2024 368th Shanethegamer 🇺🇸 735 92 5ms 3 Oct 2024 370th Shanethegamer 🇺🇸 735 100 122ms 24 May 2025 371st Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 371st chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 373rd wh3n3v3r 🇨🇿 734 88 14ms 18 Nov 2024 374th Shanethegamer 🇺🇸 733 116 1,026ms 1 Oct 2024 375th stefangimmillaro 731 94 1ms 30 Oct 2024 376th Shanethegamer 🇺🇸 731 101 4ms 2 Oct 2024 377th error256 731 109 10ms 24 Jul 2025 378th stefangimmillaro 731 114 326ms 13 Oct 2024 379th edsrzf 🇳🇿 730 52 113ms 22 days ago 380th anter69 🇭🇺 729 78 1,271ms 1 Oct 2024 381st Shanethegamer 🇺🇸 729 112 99ms 3 Oct 2024 382nd Shanethegamer 🇺🇸 729 156 30ms 2 Oct 2024 383rd error256 728 98 416ms 20 days ago 384th CLOStrophobic 🇮🇹 728 160 40ms 27 Feb 2025 385th zacjl 724 110 7ms 10 Oct 2024 386th Shanethegamer 🇺🇸 724 126 1,391ms 2 Oct 2024 387th dtbao20 🇻🇳 723 89 9ms 1 Oct 2024 387th madeforlosers 723 89 9ms 17 Oct 2024 387th junkondo-jp 723 89 10ms 14 Dec 2024 387th alexsave 723 89 10ms 18 days ago 391st annaproxy 723 132 14ms 1 Oct 2024 392nd MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 393rd weeble 720 74 6ms 1 Jul 2025 394th MeWhenI 🇻🇦 720 78 309ms 2 Oct 2024 395th Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 396th nwellnhof 🇩🇪 718 90 20ms 1 Oct 2024 396th ovs-code 🇩🇪 718 90 17ms 3 Oct 2024 396th luuumine 🇫🇷 718 90 17ms 8 Oct 2025 396th JOrE20 718 90 17ms 1 Dec 2025 400th ovs-code 🇩🇪 716 81 126ms 17 Apr 2025 First Prev 321–400 of 872 Next Last