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 241st edsrzf 🇳🇿 826 142 33ms 20 days ago 242nd stefangimmillaro 825 99 129ms 3 Oct 2024 243rd ovs-code 🇩🇪 825 200 1,529ms 19 Apr 2025 244th retrohun 824 71 9ms 10 Jan 2025 245th sean-niemann 🇺🇸 822 48 4ms 9 Aug 2025 246th DialFrost 🇸🇬 822 82 113ms 23 Jun 2025 247th MeWhenI 🇻🇦 822 92 11ms 24 Dec 2024 248th plcc0 822 97 18ms 12 Jan 2026 249th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 250th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 251st ovs-code 🇩🇪 820 106 437ms 1 Oct 2024 251st inventshah 820 106 456ms 1 Oct 2024 253rd MeWhenI 🇻🇦 819 85 2ms 5 Oct 2024 253rd albanian-laundromat 🇺🇸 819 85 2ms 64 mins ago 255th MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 256th frosster 🇨🇦 818 97 2ms 11 Feb 2026 257th GrayJoKing 🇦🇺 818 101 6ms 27 Feb 2026 258th MeWhenI 🇻🇦 817 85 108ms 4 Oct 2024 259th MeWhenI 🇻🇦 817 104 1,025ms 2 Oct 2024 260th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 261st MeWhenI 🇻🇦 817 186 15ms 2 Oct 2024 262nd Shanethegamer 🇺🇸 816 69 322ms 2 Oct 2024 263rd sisyphus-ppcg 🇦🇺 816 83 11ms 2 Oct 2024 264th lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 265th GolfingSuccess 🇬🇷 814 98 18ms 5 Oct 2024 265th albanian-laundromat 🇺🇸 814 98 18ms 3 Nov 2025 267th albanian-laundromat 🇺🇸 813 118 4ms 11 Dec 2025 268th Natanaelel 🇸🇪 812 59 35ms 7 Feb 2025 269th Shanethegamer 🇺🇸 812 70 1,296ms 9 Apr 2025 270th sean-niemann 🇺🇸 812 115 361ms 24 Sep 2025 270th stefangimmillaro 812 115 671ms 6 Oct 2025 272nd stefangimmillaro 810 126 2ms 3 Oct 2024 273rd sean-niemann 🇺🇸 809 82 473ms 23 Dec 2024 274th CLOStrophobic 🇮🇹 808 119 6ms 24 Feb 2025 275th stefangimmillaro 808 134 41ms 3 Oct 2024 276th GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 277th trinityy-7 806 80 14ms 23 Jul 2025 278th SirBogman 🇺🇸 806 99 17ms 8 Oct 2024 278th solisolu 806 99 22ms 13 Mar 2026 278th BrunoVisnadi 🇧🇷 806 99 16ms 20 days ago 281st error256 805 116 494ms 24 Sep 2025 282nd albanian-laundromat 🇺🇸 805 148 352ms 3 Dec 2025 283rd emgordon154 805 205 1,468ms 7 Mar 2025 284th antimon2 🇯🇵 804 70 541ms 9 Oct 2024 285th MeWhenI 🇻🇦 804 127 2ms 5 Oct 2024 285th albanian-laundromat 🇺🇸 804 127 3ms 3 Nov 2025 287th GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 288th MeWhenI 🇻🇦 803 88 1ms 2 Oct 2024 289th Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 290th stefangimmillaro 802 89 418ms 4 Oct 2024 291st DialFrost 🇸🇬 802 106 24ms 23 Mar 2025 292nd ovs-code 🇩🇪 802 119 15ms 1 Oct 2024 293rd albanian-laundromat 🇺🇸 802 120 42ms 3 Nov 2025 294th edsrzf 🇳🇿 801 104 405ms 21 Feb 2026 295th anter69 🇭🇺 800 71 1,213ms 25 Feb 2026 296th Shanethegamer 🇺🇸 800 102 451ms 4 Oct 2024 297th duckyluuk 🇳🇱 799 83 532ms 3 Oct 2024 297th emgordon154 799 83 420ms 18 Nov 2024 299th sean-niemann 🇺🇸 799 92 158ms 1 Oct 2025 300th stefangimmillaro 798 87 108ms 4 Oct 2024 301st bzijlema 🇳🇱 798 100 19ms 10 Oct 2024 301st bricknellj 798 100 20ms 4 Mar 2025 303rd DialFrost 🇸🇬 797 85 10ms 1 Oct 2024 303rd xsot 🇸🇬 797 85 5ms 7 Oct 2024 305th MeWhenI 🇻🇦 797 109 444ms 2 Oct 2024 306th Shanethegamer 🇺🇸 797 128 2ms 3 Oct 2024 307th 2bular 796 49 31ms 8 Nov 2025 308th tayloia 🇬🇧 796 81 10ms 3 Oct 2024 308th targrik 796 81 9ms 8 Feb 2025 310th m-tkach 🇺🇦 796 138 29ms 3 Oct 2024 311th vang1ong7ang 795 118 151ms 6 days ago 312th DialFrost 🇸🇬 794 84 2,495ms 26 Oct 2024 313th Natanaelel 🇸🇪 793 48 136ms 1 Oct 2024 314th MeWhenI 🇻🇦 793 90 421ms 2 Oct 2024 315th Shanethegamer 🇺🇸 793 208 1,423ms 14 Apr 2025 315th DialFrost 🇸🇬 793 208 1,470ms 18 Apr 2025 317th jared-hughes 791 203 88ms 20 Dec 2024 318th saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 319th ovs-code 🇩🇪 790 84 524ms 3 Oct 2024 319th Shanethegamer 🇺🇸 790 84 471ms 3 Oct 2024 First Prev 241–320 of 934 Next Last