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 ovs-code 🇩🇪 855 46 4ms 4 Oct 2024 161st nwellnhof 🇩🇪 855 46 4ms 7 Oct 2024 163rd m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 164th sean-niemann 🇺🇸 854 56 36ms 8 Aug 2025 164th Steffan153 🇫🇮 854 56 36ms 10 hours ago 166th JayXon 🇺🇸 853 95 424ms 4 Oct 2024 167th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 168th MostParsingVex 850 100 1,024ms 1 Oct 2024 169th error256 849 106 85ms 8 Oct 2024 170th emgordon154 848 67 1,283ms 18 Nov 2024 171st DialFrost 🇸🇬 848 94 20ms 1 Oct 2024 171st ndren 848 94 17ms 14 Feb 2025 173rd edsrzf 🇳🇿 847 150 45ms 27 Feb 2025 174th primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 175th lynn 846 131 138ms 8 Jan 2025 176th KasperKivimaeki 🇫🇮 845 141 294ms 9 Oct 2025 177th error256 844 94 2ms 7 Oct 2024 178th KasperKivimaeki 🇫🇮 844 103 396ms 8 Dec 2025 179th IanUtley 844 113 18ms 2 Oct 2024 180th sean-niemann 🇺🇸 844 114 42ms 2 Oct 2024 181st m-tkach 🇺🇦 842 144 79ms 8 Oct 2024 182nd nwellnhof 🇩🇪 841 84 2ms 2 Oct 2024 182nd ovs-code 🇩🇪 841 84 1ms 2 Nov 2024 182nd inventshah 841 84 2ms 31 Mar 2025 185th edsrzf 🇳🇿 841 111 439ms 19 Dec 2025 186th sean-niemann 🇺🇸 840 121 3ms 30 Nov 2024 187th xsot 🇸🇬 839 57 38ms 6 May 2025 188th moustave 839 95 22ms 4 Nov 2024 188th emgordon154 839 95 17ms 18 Nov 2024 190th emplv 🇱🇻 839 142 295ms 2 Oct 2024 190th sean-niemann 🇺🇸 839 142 302ms 2 Oct 2024 192nd edsrzf 🇳🇿 838 131 27ms 29 hours ago 193rd snoozingnewt 🇨🇦 837 92 113ms 18 Dec 2025 194th JayXon 🇺🇸 837 109 1,485ms 5 Oct 2024 195th GrayJoKing 🇦🇺 836 47 4ms 1 Oct 2024 196th stefangimmillaro 836 68 1,290ms 2 Oct 2024 197th Shanethegamer 🇺🇸 836 77 9ms 1 Oct 2024 197th edsrzf 🇳🇿 836 77 10ms 10 May 2025 197th biocommando 🇫🇮 836 77 11ms 13 Jun 2025 200th sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 200th Steffan153 🇫🇮 836 81 11ms 10 hours ago 202nd emplv 🇱🇻 836 145 25ms 24 Oct 2024 203rd edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 204th stefangimmillaro 834 80 2,338ms 12 Nov 2024 205th edsrzf 🇳🇿 833 108 82ms 26 Jul 2025 206th stefangimmillaro 833 112 137ms 4 Oct 2024 207th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 208th edsrzf 🇳🇿 833 133 154ms 19 Dec 2025 209th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 210th ovs-code 🇩🇪 833 200 1,436ms 19 Apr 2025 211th JayXon 🇺🇸 832 155 2,650ms 3 Oct 2024 212th saito-ta 🇯🇵 831 85 1ms 1 Oct 2024 213th emplv 🇱🇻 830 77 134ms 28 Mar 2025 214th MeWhenI 🇻🇦 830 96 18ms 30 Jul 2025 215th CLOStrophobic 🇮🇹 830 119 6ms 24 Feb 2025 216th nwellnhof 🇩🇪 828 105 390ms 19 days ago 217th m-tkach 🇺🇦 825 58 42ms 8 Oct 2024 218th dcgjb 825 78 10ms 6 May 2025 219th stefangimmillaro 825 99 109ms 3 Oct 2024 220th retrohun 824 71 9ms 10 Jan 2025 221st kg583 🇺🇸 823 115 7ms 17 Oct 2025 222nd DialFrost 🇸🇬 822 82 103ms 23 Jun 2025 223rd plcc0 822 97 21ms 12 Jan 2026 224th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 225th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 226th ovs-code 🇩🇪 820 106 394ms 1 Oct 2024 226th inventshah 820 106 391ms 1 Oct 2024 228th sean-niemann 🇺🇸 819 48 4ms 9 Aug 2025 229th MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 230th frosster 818 97 3ms 9 hours ago 231st MeWhenI 🇻🇦 817 92 10ms 24 Dec 2024 232nd MeWhenI 🇻🇦 817 104 1,024ms 2 Oct 2024 233rd canissimia 🇦🇶 817 130 3ms 4 Oct 2024 234th MeWhenI 🇻🇦 817 186 14ms 2 Oct 2024 235th sisyphus-ppcg 🇦🇺 816 83 9ms 2 Oct 2024 236th lifthrasiir 🇰🇷 815 197 10ms 19 Dec 2024 237th Shanethegamer 🇺🇸 814 69 341ms 2 Oct 2024 238th MeWhenI 🇻🇦 814 85 2ms 5 Oct 2024 239th MeWhenI 🇻🇦 813 85 130ms 4 Oct 2024 240th GolfingSuccess 🇬🇷 813 98 19ms 5 Oct 2024 First Prev 161–240 of 888 Next Last