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 81st ovs-code 🇩🇪 891 63 589ms 2 Oct 2024 82nd GrayJoKing 🇦🇺 889 60 4ms 3 Oct 2024 83rd nwellnhof 🇩🇪 889 105 627ms 25 Sep 2025 84th JayXon 🇺🇸 889 134 289ms 3 Oct 2024 85th MeWhenI 🇻🇦 888 64 1,305ms 3 Oct 2024 86th kgolf 887 32 3ms 15 Apr 2025 87th rucin93 🇵🇱 887 78 2ms 18 Nov 2025 87th JayXon 🇺🇸 887 78 2ms 19 Nov 2025 87th sean-niemann 🇺🇸 887 78 2ms 19 Nov 2025 90th MeWhenI 🇻🇦 886 54 35ms 3 Oct 2024 90th error256 886 54 38ms 7 Oct 2024 90th nwellnhof 🇩🇪 886 54 38ms 13 Oct 2024 93rd canissimia 🇦🇶 886 66 8ms 1 Oct 2024 94th nwellnhof 🇩🇪 886 90 20ms 1 Oct 2024 94th ovs-code 🇩🇪 886 90 17ms 3 Oct 2024 94th kg583 🇺🇸 886 90 17ms 9 Oct 2024 94th sean-niemann 🇺🇸 886 90 20ms 23 Dec 2024 94th Steffan153 🇫🇮 886 90 20ms 4 hours ago 99th lyphyser 883 41 51ms 1 Oct 2024 100th nwellnhof 🇩🇪 883 135 312ms 16 Oct 2024 101st dmrichwa 🇺🇸 882 73 12ms 5 Oct 2024 101st DialFrost 🇸🇬 882 73 11ms 12 Oct 2024 103rd GrayJoKing 🇦🇺 881 90 2ms 3 Oct 2024 103rd FlyingPenguin223 881 90 2ms 16 Oct 2024 105th acotis 880 106 139ms 29 May 2025 106th ovs-code 🇩🇪 878 69 4ms 4 Oct 2024 106th edsrzf 🇳🇿 878 69 4ms 10 Nov 2025 108th sean-niemann 🇺🇸 878 76 2,410ms 24 Oct 2024 109th JayXon 🇺🇸 878 93 108ms 14 Oct 2024 110th JayXon 🇺🇸 877 95 374ms 23 Jul 2025 111th edsrzf 🇳🇿 876 79 2ms 18 Nov 2025 112th JayXon 🇺🇸 876 84 120ms 24 May 2025 113th 5cw 🇺🇸 876 91 17ms 1 Oct 2024 113th stefangimmillaro 876 91 16ms 13 Oct 2024 113th duckyluuk 🇳🇱 876 91 21ms 18 Oct 2024 113th GrayJoKing 🇦🇺 876 91 19ms 2 Jul 2025 117th JayXon 🇺🇸 875 79 119ms 17 Oct 2024 118th edsrzf 🇳🇿 874 113 6ms 12 days ago 119th ovs-code 🇩🇪 873 127 127ms 2 Oct 2024 120th AlephSquirrel 872 76 445ms 1 Oct 2024 121st Shanethegamer 🇺🇸 871 91 2ms 4 Oct 2024 122nd pardouin 🇫🇷 870 55 37ms 3 Oct 2024 122nd ovs-code 🇩🇪 870 55 39ms 5 Oct 2024 124th Natanaelel 🇸🇪 870 74 11ms 1 Oct 2024 124th helbling 🇨🇭 870 74 10ms 1 Oct 2024 124th Irratix 🇳🇱 870 74 10ms 14 Oct 2024 124th emgordon154 870 74 9ms 18 Nov 2024 128th JayXon 🇺🇸 869 117 2ms 5 Oct 2024 129th error256 868 109 10ms 24 Jul 2025 129th edsrzf 🇳🇿 868 109 7ms 24 Jul 2025 131st emgordon154 867 77 2,406ms 8 Nov 2024 132nd Shanethegamer 🇺🇸 866 92 16ms 3 Oct 2024 132nd error256 866 92 21ms 7 Oct 2024 132nd thatbirdguythatuknownot 866 92 18ms 14 Oct 2024 135th UnderKoen 🇳🇱 865 86 7ms 4 Oct 2024 136th JayXon 🇺🇸 865 104 89ms 6 Oct 2024 137th ovs-code 🇩🇪 864 78 111ms 2 Oct 2024 138th GrayJoKing 🇦🇺 864 87 12ms 25 Nov 2025 139th edsrzf 🇳🇿 864 138 295ms 19 Dec 2025 140th ovs-code 🇩🇪 862 29 40ms 4 Oct 2024 141st pardouin 🇫🇷 861 66 1,435ms 10 Apr 2025 142nd xsot 🇸🇬 861 82 2ms 6 May 2025 143rd Natanaelel 🇸🇪 860 33 2ms 6 Oct 2024 143rd GrayJoKing 🇦🇺 860 33 2ms 6 Jun 2025 143rd SirBogman 🇺🇸 860 33 2ms 8 Jul 2025 146th nwellnhof 🇩🇪 860 68 9ms 5 Oct 2024 147th tomtheisen 🇺🇸 860 83 443ms 10 Feb 2025 148th zacjl 860 110 7ms 10 Oct 2024 149th voytxt 🇨🇿 858 75 10ms 1 Oct 2024 149th MeWhenI 🇻🇦 858 75 11ms 2 Oct 2024 149th m-tkach 🇺🇦 858 75 9ms 5 Oct 2024 149th error256 858 75 10ms 7 Oct 2024 153rd edsrzf 🇳🇿 858 86 4ms 24 Jul 2025 154th Bulmenisaurus 857 93 17ms 6 Oct 2024 154th lynn 857 93 16ms 8 Jan 2025 154th CornerMercury 🇬🇧 857 93 16ms 23 Nov 2025 154th KasperKivimaeki 🇫🇮 857 93 19ms 30 Nov 2025 154th blaztoma 🇱🇹 857 93 18ms 18 Dec 2025 159th stefangimmillaro 857 139 303ms 3 Oct 2024 160th edsrzf 🇳🇿 856 90 128ms 18 Dec 2025 First Prev 81–160 of 888 Next Last