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 159th SirBogman 🇺🇸 860 33 2ms 8 Jul 2025 162nd nwellnhof 🇩🇪 860 68 9ms 5 Oct 2024 163rd voytxt 🇨🇿 860 75 11ms 1 Oct 2024 163rd MeWhenI 🇻🇦 860 75 13ms 2 Oct 2024 163rd m-tkach 🇺🇦 860 75 9ms 5 Oct 2024 163rd error256 860 75 11ms 7 Oct 2024 167th tomtheisen 🇺🇸 860 83 440ms 10 Feb 2025 168th JayXon 🇺🇸 859 95 445ms 4 Oct 2024 169th ovs-code 🇩🇪 858 46 5ms 4 Oct 2024 169th nwellnhof 🇩🇪 858 46 4ms 7 Oct 2024 171st Bulmenisaurus 858 93 17ms 6 Oct 2024 171st lynn 858 93 16ms 8 Jan 2025 171st CornerMercury 🇬🇧 858 93 16ms 23 Nov 2025 171st KasperKivimaeki 🇫🇮 858 93 17ms 30 Nov 2025 171st blaztoma 🇱🇹 858 93 17ms 18 Dec 2025 176th stefangimmillaro 857 139 287ms 3 Oct 2024 177th edsrzf 🇳🇿 856 90 104ms 18 Dec 2025 178th sean-niemann 🇺🇸 855 56 38ms 8 Aug 2025 179th m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 180th edsrzf 🇳🇿 854 143 29ms 6 days ago 181st marshallward 🇺🇸 853 127 45ms 3 days ago 182nd sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 183rd MostParsingVex 850 100 1,024ms 1 Oct 2024 184th DialFrost 🇸🇬 849 94 18ms 1 Oct 2024 184th ndren 849 94 16ms 14 Feb 2025 184th anter69 🇭🇺 849 94 16ms 25 Feb 2026 187th error256 849 106 94ms 8 Oct 2024 188th kg583 🇺🇸 849 143 40ms 20 Feb 2026 188th edsrzf 🇳🇿 849 143 43ms 17 days ago 190th emgordon154 848 67 1,283ms 18 Nov 2024 191st Lv0Sys 🇵🇱 848 76 11ms 22 Feb 2026 192nd m-tkach 🇺🇦 848 144 79ms 8 Oct 2024 193rd edsrzf 🇳🇿 847 107 1,321ms 6 days ago 194th primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 195th lynn 846 131 138ms 8 Jan 2025 195th edsrzf 🇳🇿 846 131 168ms 12 days ago 197th KasperKivimaeki 🇫🇮 845 141 290ms 9 Oct 2025 198th error256 844 94 2ms 7 Oct 2024 199th KasperKivimaeki 🇫🇮 844 103 444ms 8 Dec 2025 200th IanUtley 844 113 19ms 2 Oct 2024 201st sean-niemann 🇺🇸 844 114 41ms 2 Oct 2024 202nd sean-niemann 🇺🇸 844 121 2ms 30 Nov 2024 202nd edsrzf 🇳🇿 844 121 3ms 21 Feb 2026 204th edsrzf 🇳🇿 843 98 7ms 25 Feb 2026 205th nwellnhof 🇩🇪 842 84 2ms 2 Oct 2024 205th ovs-code 🇩🇪 842 84 1ms 2 Nov 2024 205th inventshah 842 84 2ms 31 Mar 2025 208th emplv 🇱🇻 842 145 28ms 24 Oct 2024 209th GrayJoKing 🇦🇺 840 47 5ms 1 Oct 2024 209th Steffan153 🇫🇮 840 47 4ms 16 Feb 2026 211th xsot 🇸🇬 840 57 35ms 6 May 2025 212th kg583 🇺🇸 840 84 5ms 12 days ago 213th moustave 840 95 20ms 4 Nov 2024 213th emgordon154 840 95 17ms 18 Nov 2024 215th emplv 🇱🇻 839 142 287ms 2 Oct 2024 215th sean-niemann 🇺🇸 839 142 275ms 2 Oct 2024 217th stefangimmillaro 838 112 139ms 4 Oct 2024 218th edsrzf 🇳🇿 838 131 28ms 10 Feb 2026 219th Shanethegamer 🇺🇸 837 77 11ms 1 Oct 2024 219th biocommando 🇫🇮 837 77 14ms 13 Jun 2025 221st edsrzf 🇳🇿 837 83 107ms 21 Feb 2026 222nd snoozingnewt 🇨🇦 837 92 109ms 18 Dec 2025 223rd kg583 🇺🇸 837 113 8ms 20 Feb 2026 224th stefangimmillaro 836 68 1,290ms 2 Oct 2024 225th sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 225th Steffan153 🇫🇮 836 81 11ms 11 Feb 2026 227th edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 228th stefangimmillaro 834 80 2,343ms 12 Nov 2024 229th edsrzf 🇳🇿 833 108 88ms 26 Jul 2025 230th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 231st MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 232nd ovs-code 🇩🇪 833 200 1,405ms 19 Apr 2025 233rd saito-ta 🇯🇵 832 85 1ms 1 Oct 2024 234th JayXon 🇺🇸 832 155 1,904ms 3 Oct 2024 235th MeWhenI 🇻🇦 831 96 17ms 30 Jul 2025 236th JayXon 🇺🇸 831 109 1,332ms 5 Oct 2024 237th emplv 🇱🇻 830 77 132ms 28 Mar 2025 238th kg583 🇺🇸 830 80 384ms 20 Feb 2026 239th nwellnhof 🇩🇪 828 105 448ms 22 Jan 2026 240th m-tkach 🇺🇦 826 58 38ms 8 Oct 2024 First Prev 161–240 of 934 Next Last