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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL 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 ><> ALGOL 68 ArkScript 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 APL 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 320th ovs-code 🇩🇪 791 81 133ms 17 Apr 2025 322nd ovs-code 🇩🇪 791 84 524ms 3 Oct 2024 322nd Shanethegamer 🇺🇸 791 84 471ms 3 Oct 2024 324th emgordon154 791 151 340ms 17 Jan 2025 325th jared-hughes 791 203 88ms 20 Dec 2024 326th saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 327th lifthrasiir 🇰🇷 790 101 17ms 21 Nov 2024 327th btjones0 790 101 18ms 2 Dec 2024 329th edsrzf 🇳🇿 789 119 155ms 23 Jul 2025 330th SirBogman 🇺🇸 789 138 39ms 11 Jul 2025 331st KingSkyrock 🇺🇸 787 82 11ms 14 Oct 2024 332nd stefangimmillaro 786 61 35ms 1 Oct 2024 333rd retrohun 786 90 2ms 12 days ago 334th Shanethegamer 🇺🇸 786 91 459ms 3 Oct 2024 335th namelessiw 786 119 467ms 9 Oct 2025 336th Shanethegamer 🇺🇸 786 152 337ms 3 Oct 2024 336th targrik 786 152 342ms 7 Jul 2025 338th SirBogman 🇺🇸 782 50 32ms 8 Jul 2025 339th annaproxy 782 102 18ms 1 Oct 2024 339th snoozingnewt 🇨🇦 782 102 10ms 6 Dec 2025 339th Flekay 🇩🇪 782 102 18ms 19 Feb 2026 339th dokutan 782 102 19ms 12 Mar 2026 339th aksyristos 782 102 19ms 15 days ago 339th jusaka 782 102 17ms 15 days ago 339th flekAI 782 102 18ms 4 days ago 339th scpchicken 🇵🇼 782 102 17ms 4 days ago 347th sean-niemann 🇺🇸 782 105 461ms 1 Oct 2024 348th sean-niemann 🇺🇸 782 107 375ms 3 Oct 2024 349th m-tkach 🇺🇦 782 131 2ms 4 Oct 2024 350th albanian-laundromat 🇺🇸 781 74 1,086ms 3 Nov 2025 351st GrayJoKing 🇦🇺 781 82 138ms 1 Oct 2024 352nd emgordon154 781 197 1,641ms 15 hours ago 353rd duckyluuk 🇳🇱 780 97 10ms 25 Nov 2025 354th adriweb 🇫🇷 779 102 1ms 5 Oct 2024 355th Shanethegamer 🇺🇸 779 120 364ms 24 Sep 2025 356th AlephSquirrel 779 124 7ms 21 Oct 2024 357th Natanaelel 🇸🇪 778 143 145ms 20 Apr 2025 358th uttumuttu 🇫🇮 777 83 9ms 1 Oct 2024 358th KatieLG 🇬🇧 777 83 12ms 1 Oct 2024 358th Larento 777 83 12ms 4 Nov 2024 358th Andrey-Plotnikov 777 83 10ms 13 Jan 2025 358th nathanadams 🇳🇿 777 83 12ms 6 Oct 2025 363rd DialFrost 🇸🇬 776 90 2ms 18 Nov 2025 364th sisyphus-ppcg 🇦🇺 773 62 36ms 3 Oct 2024 365th retrohun 773 63 20ms 2 Oct 2024 366th DialFrost 🇸🇬 773 121 369ms 24 Sep 2025 367th emgordon154 772 83 127ms 18 Nov 2024 368th xsot 🇸🇬 772 125 7ms 20 Oct 2024 369th targrik 771 88 8ms 7 Feb 2025 370th Waffle3z 771 103 2ms 2 Oct 2024 371st luuumine 🇫🇷 769 92 1ms 5 Dec 2025 371st bzd7 769 92 2ms 7 Dec 2025 373rd ovs-code 🇩🇪 769 122 148ms 25 Apr 2025 374th lifthrasiir 🇰🇷 768 37 2ms 27 Nov 2024 375th didion0 🇺🇸 768 84 11ms 10 Jan 2025 376th jatloe 767 104 10ms 1 Oct 2024 377th MeWhenI 🇻🇦 767 109 372ms 2 Oct 2024 378th albanian-laundromat 🇺🇸 766 118 90ms 13 Nov 2025 379th Shanethegamer 🇺🇸 766 124 6ms 4 Oct 2024 380th GolfingSuccess 🇬🇷 765 70 6ms 6 Jun 2025 381st CLOStrophobic 🇮🇹 763 160 40ms 27 Feb 2025 382nd MeWhenI 🇻🇦 762 89 6ms 2 Oct 2024 383rd albanian-laundromat 🇺🇸 762 161 27ms 10 Mar 2026 384th emgordon154 761 63 35ms 18 Nov 2024 384th SirBogman 🇺🇸 761 63 35ms 19 Jul 2025 386th DialFrost 🇸🇬 761 76 1,034ms 30 Aug 2025 387th sean-niemann 🇺🇸 761 93 1ms 24 Oct 2024 388th fourth-bit 760 105 18ms 1 Oct 2024 388th jared-hughes 760 105 17ms 3 Oct 2024 388th mattyhempstead 760 105 28ms 7 Oct 2024 391st weliveinhell 🇭🇹 759 85 11ms 1 Oct 2024 391st SteRoy 759 85 10ms 13 May 2025 393rd MeWhenI 🇻🇦 758 162 26ms 2 Oct 2024 394th 0xjac 🇨🇭 756 158 321ms 17 Jun 2025 395th MeWhenI 🇻🇦 755 88 524ms 2 Oct 2024 395th albanian-laundromat 🇺🇸 755 88 521ms 3 Nov 2025 397th GrayJoKing 🇦🇺 754 90 5ms 1 Oct 2024 398th stefangimmillaro 753 94 1ms 30 Oct 2024 398th emgordon154 753 94 2ms 7 Feb 2026 400th davecame 753 106 18ms 1 Oct 2024 First Prev 321–400 of 1,005 Next Last