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 161st tomtheisen 🇺🇸 862 83 428ms 10 Feb 2025 162nd edsrzf 🇳🇿 862 90 104ms 18 Dec 2025 162nd snoozingnewt 🇨🇦 862 90 97ms 2 days ago 164th Natanaelel 🇸🇪 861 33 2ms 6 Oct 2024 164th GrayJoKing 🇦🇺 861 33 2ms 6 Jun 2025 164th SirBogman 🇺🇸 861 33 2ms 8 Jul 2025 167th nwellnhof 🇩🇪 860 68 9ms 5 Oct 2024 168th voytxt 🇨🇿 860 75 9ms 1 Oct 2024 168th MeWhenI 🇻🇦 860 75 10ms 2 Oct 2024 168th m-tkach 🇺🇦 860 75 11ms 5 Oct 2024 168th error256 860 75 10ms 7 Oct 2024 172nd m-tkach 🇺🇦 860 87 7ms 6 Oct 2024 173rd ovs-code 🇩🇪 859 46 5ms 4 Oct 2024 173rd nwellnhof 🇩🇪 859 46 4ms 7 Oct 2024 175th stefangimmillaro 859 139 337ms 3 Oct 2024 176th Bulmenisaurus 858 93 17ms 6 Oct 2024 176th lynn 858 93 17ms 8 Jan 2025 176th CornerMercury 🇬🇧 858 93 17ms 23 Nov 2025 176th KasperKivimaeki 🇫🇮 858 93 19ms 30 Nov 2025 180th marshallward 🇺🇸 858 127 45ms 11 days ago 181st edsrzf 🇳🇿 858 143 29ms 15 days ago 182nd MostParsingVex 857 100 1,024ms 1 Oct 2024 183rd sean-niemann 🇺🇸 856 56 38ms 8 Aug 2025 184th kg583 🇺🇸 854 143 40ms 20 Feb 2026 184th edsrzf 🇳🇿 854 143 43ms 26 days ago 186th error256 853 106 94ms 8 Oct 2024 187th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 188th m-tkach 🇺🇦 852 144 79ms 8 Oct 2024 189th emgordon154 851 67 1,283ms 18 Nov 2024 190th edsrzf 🇳🇿 851 98 7ms 25 Feb 2026 191st sean-niemann 🇺🇸 851 114 41ms 2 Oct 2024 192nd primo-ppcg 🇹🇭 851 128 41ms 27 Apr 2025 193rd Lv0Sys 🇵🇱 849 76 11ms 22 Feb 2026 194th DialFrost 🇸🇬 849 94 17ms 1 Oct 2024 194th ndren 849 94 17ms 14 Feb 2025 194th anter69 🇭🇺 849 94 18ms 25 Feb 2026 197th kg583 🇺🇸 847 84 5ms 21 days ago 198th sean-niemann 🇺🇸 847 121 2ms 30 Nov 2024 198th edsrzf 🇳🇿 847 121 3ms 21 Feb 2026 200th KasperKivimaeki 🇫🇮 847 141 311ms 9 Oct 2025 201st emplv 🇱🇻 847 145 28ms 24 Oct 2024 202nd lynn 846 131 138ms 8 Jan 2025 202nd edsrzf 🇳🇿 846 131 168ms 21 days ago 204th error256 845 94 2ms 7 Oct 2024 205th KasperKivimaeki 🇫🇮 845 103 450ms 8 Dec 2025 206th edsrzf 🇳🇿 845 131 28ms 10 Feb 2026 207th IanUtley 844 113 19ms 2 Oct 2024 208th nwellnhof 🇩🇪 842 84 2ms 2 Oct 2024 208th ovs-code 🇩🇪 842 84 1ms 2 Nov 2024 208th inventshah 842 84 2ms 31 Mar 2025 211th GrayJoKing 🇦🇺 841 47 5ms 1 Oct 2024 211th Steffan153 🇫🇮 841 47 4ms 16 Feb 2026 213th xsot 🇸🇬 841 57 35ms 6 May 2025 214th kg583 🇺🇸 841 113 7ms 20 Feb 2026 215th emplv 🇱🇻 841 142 324ms 2 Oct 2024 215th sean-niemann 🇺🇸 841 142 332ms 2 Oct 2024 217th edsrzf 🇳🇿 840 83 107ms 21 Feb 2026 218th moustave 840 95 23ms 4 Nov 2024 218th emgordon154 840 95 18ms 18 Nov 2024 220th stefangimmillaro 838 68 1,290ms 2 Oct 2024 221st Shanethegamer 🇺🇸 838 77 10ms 1 Oct 2024 221st biocommando 🇫🇮 838 77 10ms 13 Jun 2025 223rd sean-niemann 🇺🇸 838 81 10ms 20 Dec 2024 223rd Steffan153 🇫🇮 838 81 11ms 11 Feb 2026 225th edsrzf 🇳🇿 838 108 1,488ms 13 hours ago 226th stefangimmillaro 838 112 139ms 4 Oct 2024 227th MeWhenI 🇻🇦 838 130 40ms 3 Oct 2024 228th edsrzf 🇳🇿 837 108 88ms 26 Jul 2025 229th stefangimmillaro 836 80 2,328ms 12 Nov 2024 230th edsrzf 🇳🇿 836 139 37ms 32 hours ago 231st edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 232nd MeWhenI 🇻🇦 835 143 340ms 2 Oct 2024 233rd ovs-code 🇩🇪 833 200 1,451ms 19 Apr 2025 234th emplv 🇱🇻 832 77 148ms 28 Mar 2025 235th saito-ta 🇯🇵 832 85 1ms 1 Oct 2024 236th kg583 🇺🇸 831 80 457ms 20 Feb 2026 237th MeWhenI 🇻🇦 831 96 17ms 30 Jul 2025 238th nwellnhof 🇩🇪 829 105 455ms 22 Jan 2026 239th DialFrost 🇸🇬 828 82 113ms 23 Jun 2025 240th stefangimmillaro 828 99 129ms 3 Oct 2024 First Prev 161–240 of 994 Next Last