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 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 Bytes Time Submitted 161st stefangimmillaro 857 139 293ms 3 Oct 2024 162nd ovs-code 🇩🇪 856 46 4ms 4 Oct 2024 162nd nwellnhof 🇩🇪 856 46 4ms 7 Oct 2024 164th edsrzf 🇳🇿 856 90 128ms 18 Dec 2025 165th m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 166th sean-niemann 🇺🇸 854 56 36ms 8 Aug 2025 167th JayXon 🇺🇸 853 95 445ms 4 Oct 2024 168th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 169th MostParsingVex 850 100 1,024ms 1 Oct 2024 170th error256 849 106 85ms 8 Oct 2024 171st emgordon154 848 67 1,283ms 18 Nov 2024 172nd DialFrost 🇸🇬 848 94 20ms 1 Oct 2024 172nd ndren 848 94 17ms 14 Feb 2025 174th edsrzf 🇳🇿 847 150 45ms 27 Feb 2025 175th primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 176th lynn 846 131 138ms 8 Jan 2025 177th KasperKivimaeki 🇫🇮 845 141 294ms 9 Oct 2025 178th error256 844 94 2ms 7 Oct 2024 179th KasperKivimaeki 🇫🇮 844 103 396ms 8 Dec 2025 180th IanUtley 844 113 18ms 2 Oct 2024 181st sean-niemann 🇺🇸 844 114 42ms 2 Oct 2024 182nd m-tkach 🇺🇦 842 144 79ms 8 Oct 2024 183rd nwellnhof 🇩🇪 841 84 2ms 2 Oct 2024 183rd ovs-code 🇩🇪 841 84 1ms 2 Nov 2024 183rd inventshah 841 84 2ms 31 Mar 2025 186th edsrzf 🇳🇿 841 111 439ms 19 Dec 2025 187th sean-niemann 🇺🇸 840 121 3ms 30 Nov 2024 188th xsot 🇸🇬 839 57 38ms 6 May 2025 189th moustave 839 95 22ms 4 Nov 2024 189th emgordon154 839 95 17ms 18 Nov 2024 191st emplv 🇱🇻 839 142 295ms 2 Oct 2024 191st sean-niemann 🇺🇸 839 142 302ms 2 Oct 2024 193rd GrayJoKing 🇦🇺 838 47 4ms 1 Oct 2024 193rd Steffan153 🇫🇮 838 47 5ms 18 hours ago 195th edsrzf 🇳🇿 838 131 27ms 7 days ago 196th snoozingnewt 🇨🇦 837 92 113ms 18 Dec 2025 197th JayXon 🇺🇸 837 109 1,485ms 5 Oct 2024 198th stefangimmillaro 836 68 1,290ms 2 Oct 2024 199th Shanethegamer 🇺🇸 836 77 11ms 1 Oct 2024 199th edsrzf 🇳🇿 836 77 10ms 10 May 2025 199th biocommando 🇫🇮 836 77 10ms 13 Jun 2025 202nd sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 202nd Steffan153 🇫🇮 836 81 12ms 6 days ago 204th emplv 🇱🇻 836 145 25ms 24 Oct 2024 205th edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 206th stefangimmillaro 834 80 2,338ms 12 Nov 2024 207th edsrzf 🇳🇿 833 108 82ms 26 Jul 2025 208th stefangimmillaro 833 112 144ms 4 Oct 2024 209th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 210th edsrzf 🇳🇿 833 133 154ms 19 Dec 2025 211th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 212th ovs-code 🇩🇪 833 200 1,401ms 19 Apr 2025 213th JayXon 🇺🇸 832 155 2,650ms 3 Oct 2024 214th saito-ta 🇯🇵 831 85 1ms 1 Oct 2024 215th emplv 🇱🇻 830 77 134ms 28 Mar 2025 216th MeWhenI 🇻🇦 830 96 18ms 30 Jul 2025 217th CLOStrophobic 🇮🇹 830 119 6ms 24 Feb 2025 218th nwellnhof 🇩🇪 828 105 390ms 26 days ago 219th m-tkach 🇺🇦 825 58 42ms 8 Oct 2024 220th dcgjb 825 78 10ms 6 May 2025 221st stefangimmillaro 825 99 109ms 3 Oct 2024 222nd retrohun 824 71 9ms 10 Jan 2025 223rd kg583 🇺🇸 823 115 7ms 17 Oct 2025 224th DialFrost 🇸🇬 822 82 103ms 23 Jun 2025 225th plcc0 822 97 21ms 12 Jan 2026 226th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 227th sean-niemann 🇺🇸 820 48 4ms 9 Aug 2025 228th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 229th ovs-code 🇩🇪 820 106 394ms 1 Oct 2024 229th inventshah 820 106 391ms 1 Oct 2024 231st MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 232nd frosster 818 97 3ms 6 days ago 233rd MeWhenI 🇻🇦 817 92 10ms 24 Dec 2024 234th MeWhenI 🇻🇦 817 104 1,025ms 2 Oct 2024 235th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 236th MeWhenI 🇻🇦 817 186 14ms 2 Oct 2024 237th sisyphus-ppcg 🇦🇺 816 83 10ms 2 Oct 2024 238th lifthrasiir 🇰🇷 815 197 10ms 19 Dec 2024 239th Shanethegamer 🇺🇸 814 69 324ms 2 Oct 2024 240th MeWhenI 🇻🇦 814 85 2ms 5 Oct 2024 First Prev 161–240 of 890 Next Last