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 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 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 Calendar 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 Multitap Input 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Calendar 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 Multitap Input 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 sean-niemann 🇺🇸 853 56 37ms 8 Aug 2025 162nd JayXon 🇺🇸 853 95 424ms 4 Oct 2024 163rd MostParsingVex 850 100 16ms 1 Oct 2024 164th error256 849 106 75ms 8 Oct 2024 165th emgordon154 848 67 1,010ms 18 Nov 2024 166th DialFrost 🇸🇬 848 94 15ms 1 Oct 2024 166th ndren 848 94 16ms 14 Feb 2025 168th edsrzf 🇳🇿 847 150 45ms 27 Feb 2025 169th primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 170th KasperKivimaeki 🇫🇮 845 141 266ms 9 Oct 2025 171st error256 844 94 2ms 7 Oct 2024 172nd edsrzf 🇳🇿 844 96 142ms 20 days ago 173rd IanUtley 844 113 18ms 2 Oct 2024 174th CLOStrophobic 🇮🇹 844 119 6ms 24 Feb 2025 175th lynn 843 131 138ms 8 Jan 2025 176th m-tkach 🇺🇦 842 144 79ms 8 Oct 2024 177th sean-niemann 🇺🇸 840 121 3ms 30 Nov 2024 178th moustave 839 95 19ms 4 Nov 2024 178th emgordon154 839 95 16ms 18 Nov 2024 180th emplv 🇱🇻 839 142 264ms 2 Oct 2024 180th sean-niemann 🇺🇸 839 142 264ms 2 Oct 2024 182nd xsot 🇸🇬 838 57 37ms 6 May 2025 183rd nwellnhof 🇩🇪 837 84 2ms 2 Oct 2024 183rd ovs-code 🇩🇪 837 84 1ms 2 Nov 2024 183rd inventshah 837 84 2ms 31 Mar 2025 186th KasperKivimaeki 🇫🇮 837 103 428ms 10 days ago 187th JayXon 🇺🇸 837 109 1,287ms 5 Oct 2024 188th stefangimmillaro 836 68 1,045ms 2 Oct 2024 189th Shanethegamer 🇺🇸 836 77 9ms 1 Oct 2024 189th edsrzf 🇳🇿 836 77 9ms 10 May 2025 189th biocommando 🇫🇮 836 77 9ms 13 Jun 2025 192nd emplv 🇱🇻 836 145 25ms 24 Oct 2024 193rd GrayJoKing 🇦🇺 835 47 4ms 1 Oct 2024 194th sean-niemann 🇺🇸 835 114 42ms 2 Oct 2024 195th sean-niemann 🇺🇸 834 81 10ms 20 Dec 2024 196th edsrzf 🇳🇿 834 116 3ms 7 days ago 197th edsrzf 🇳🇿 833 108 77ms 26 Jul 2025 198th stefangimmillaro 833 112 145ms 4 Oct 2024 199th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 200th MeWhenI 🇻🇦 833 143 263ms 2 Oct 2024 201st ovs-code 🇩🇪 833 200 447ms 19 Apr 2025 202nd stefangimmillaro 832 80 4,333ms 12 Nov 2024 203rd JayXon 🇺🇸 832 155 2,650ms 3 Oct 2024 204th emplv 🇱🇻 830 77 128ms 28 Mar 2025 205th MeWhenI 🇻🇦 830 96 16ms 30 Jul 2025 206th saito-ta 🇯🇵 827 85 1ms 1 Oct 2024 207th m-tkach 🇺🇦 827 138 27ms 3 Oct 2024 208th dcgjb 825 78 9ms 6 May 2025 209th stefangimmillaro 825 99 109ms 3 Oct 2024 210th retrohun 824 71 9ms 10 Jan 2025 211th m-tkach 🇺🇦 823 58 55ms 8 Oct 2024 212th kg583 🇺🇸 823 115 8ms 17 Oct 2025 213th DialFrost 🇸🇬 822 82 103ms 23 Jun 2025 214th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 215th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 216th albanian-laundromat 820 118 4ms 7 days ago 217th sean-niemann 🇺🇸 818 48 4ms 9 Aug 2025 218th MeWhenI 🇻🇦 818 114 494ms 7 Nov 2025 219th MeWhenI 🇻🇦 817 92 10ms 24 Dec 2024 220th MeWhenI 🇻🇦 817 104 18ms 2 Oct 2024 221st canissimia 🇦🇶 817 130 3ms 4 Oct 2024 222nd MeWhenI 🇻🇦 817 186 14ms 2 Oct 2024 223rd lifthrasiir 🇰🇷 815 197 10ms 19 Dec 2024 224th Shanethegamer 🇺🇸 814 69 346ms 2 Oct 2024 225th sisyphus-ppcg 🇦🇺 814 83 9ms 2 Oct 2024 226th MeWhenI 🇻🇦 814 85 2ms 5 Oct 2024 227th MeWhenI 🇻🇦 813 85 101ms 4 Oct 2024 228th GolfingSuccess 🇬🇷 813 98 16ms 5 Oct 2024 228th firegene 🇮🇪 813 98 18ms 21 Oct 2024 228th albanian-laundromat 813 98 16ms 3 Nov 2025 231st ovs-code 🇩🇪 813 106 428ms 1 Oct 2024 231st inventshah 813 106 516ms 1 Oct 2024 233rd emgordon154 813 205 464ms 7 Mar 2025 234th Shanethegamer 🇺🇸 812 70 986ms 9 Apr 2025 235th sean-niemann 🇺🇸 811 115 480ms 24 Sep 2025 235th stefangimmillaro 811 115 463ms 6 Oct 2025 237th kg583 🇺🇸 810 124 7ms 20 Oct 2024 237th AlephSquirrel 810 124 7ms 21 Oct 2024 239th Natanaelel 🇸🇪 809 59 49ms 7 Feb 2025 240th kg583 🇺🇸 808 82 444ms 1 Oct 2024 First Prev 161–240 of 848 Next Last