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 ovs-code 🇩🇪 862 29 48ms 4 Oct 2024 162nd tomtheisen 🇺🇸 862 83 428ms 10 Feb 2025 163rd edsrzf 🇳🇿 862 90 104ms 18 Dec 2025 163rd snoozingnewt 🇨🇦 862 90 97ms 8 days ago 165th Natanaelel 🇸🇪 861 33 2ms 6 Oct 2024 165th GrayJoKing 🇦🇺 861 33 2ms 6 Jun 2025 165th SirBogman 🇺🇸 861 33 2ms 8 Jul 2025 168th nwellnhof 🇩🇪 860 68 9ms 5 Oct 2024 169th voytxt 🇨🇿 860 75 9ms 1 Oct 2024 169th MeWhenI 🇻🇦 860 75 10ms 2 Oct 2024 169th m-tkach 🇺🇦 860 75 11ms 5 Oct 2024 169th error256 860 75 10ms 7 Oct 2024 173rd m-tkach 🇺🇦 860 87 7ms 6 Oct 2024 174th ovs-code 🇩🇪 859 46 5ms 4 Oct 2024 174th nwellnhof 🇩🇪 859 46 4ms 7 Oct 2024 176th stefangimmillaro 859 139 337ms 3 Oct 2024 177th Bulmenisaurus 858 93 17ms 6 Oct 2024 177th lynn 858 93 17ms 8 Jan 2025 177th CornerMercury 🇬🇧 858 93 17ms 23 Nov 2025 177th KasperKivimaeki 🇫🇮 858 93 19ms 30 Nov 2025 181st marshallward 🇺🇸 858 127 45ms 17 days ago 182nd edsrzf 🇳🇿 858 143 29ms 20 days ago 183rd MostParsingVex 857 100 18ms 1 Oct 2024 184th sean-niemann 🇺🇸 856 56 38ms 8 Aug 2025 185th sean-niemann 🇺🇸 855 51 2ms 2 Oct 2024 186th JayXon 🇺🇸 854 106 1,385ms 4 days ago 187th kg583 🇺🇸 854 143 40ms 20 Feb 2026 187th edsrzf 🇳🇿 854 143 43ms 21 Mar 2026 189th error256 853 106 94ms 8 Oct 2024 190th m-tkach 🇺🇦 852 144 79ms 8 Oct 2024 191st emgordon154 851 67 1,505ms 18 Nov 2024 192nd edsrzf 🇳🇿 851 98 9ms 25 Feb 2026 193rd IanUtley 851 113 19ms 2 Oct 2024 194th sean-niemann 🇺🇸 851 114 41ms 2 Oct 2024 195th primo-ppcg 🇹🇭 851 128 41ms 27 Apr 2025 196th Lv0Sys 🇵🇱 849 76 11ms 22 Feb 2026 197th DialFrost 🇸🇬 849 94 17ms 1 Oct 2024 197th ndren 849 94 17ms 14 Feb 2025 197th anter69 🇭🇺 849 94 18ms 25 Feb 2026 200th lynn 849 131 138ms 8 Jan 2025 200th edsrzf 🇳🇿 849 131 168ms 26 days ago 202nd kg583 🇺🇸 847 84 5ms 26 days ago 203rd sean-niemann 🇺🇸 847 121 2ms 30 Nov 2024 203rd edsrzf 🇳🇿 847 121 3ms 21 Feb 2026 205th KasperKivimaeki 🇫🇮 847 141 311ms 9 Oct 2025 206th emplv 🇱🇻 847 145 28ms 24 Oct 2024 207th error256 845 94 2ms 7 Oct 2024 208th KasperKivimaeki 🇫🇮 845 103 440ms 8 Dec 2025 209th edsrzf 🇳🇿 845 131 28ms 10 Feb 2026 210th edsrzf 🇳🇿 843 115 3ms 19 Dec 2025 211th nwellnhof 🇩🇪 842 84 2ms 2 Oct 2024 211th ovs-code 🇩🇪 842 84 1ms 2 Nov 2024 211th inventshah 842 84 2ms 31 Mar 2025 214th GrayJoKing 🇦🇺 841 47 5ms 1 Oct 2024 214th Steffan153 🇫🇮 841 47 4ms 16 Feb 2026 216th xsot 🇸🇬 841 57 38ms 6 May 2025 217th kg583 🇺🇸 841 113 6ms 20 Feb 2026 218th emplv 🇱🇻 841 142 324ms 2 Oct 2024 218th sean-niemann 🇺🇸 841 142 332ms 2 Oct 2024 220th edsrzf 🇳🇿 840 83 121ms 21 Feb 2026 221st moustave 840 95 23ms 4 Nov 2024 221st emgordon154 840 95 18ms 18 Nov 2024 223rd stefangimmillaro 838 68 1,425ms 2 Oct 2024 224th Shanethegamer 🇺🇸 838 77 10ms 1 Oct 2024 224th biocommando 🇫🇮 838 77 10ms 13 Jun 2025 226th sean-niemann 🇺🇸 838 81 10ms 20 Dec 2024 226th Steffan153 🇫🇮 838 81 11ms 11 Feb 2026 228th edsrzf 🇳🇿 838 108 1,488ms 6 days ago 229th stefangimmillaro 838 112 156ms 4 Oct 2024 230th MeWhenI 🇻🇦 838 130 40ms 3 Oct 2024 231st edsrzf 🇳🇿 837 108 88ms 26 Jul 2025 232nd stefangimmillaro 836 80 2,328ms 12 Nov 2024 233rd edsrzf 🇳🇿 836 139 37ms 6 days ago 234th MeWhenI 🇻🇦 835 143 340ms 2 Oct 2024 235th emplv 🇱🇻 833 77 131ms 28 Mar 2025 236th ovs-code 🇩🇪 833 200 1,220ms 19 Apr 2025 237th saito-ta 🇯🇵 832 85 1ms 1 Oct 2024 238th MeWhenI 🇻🇦 831 96 17ms 30 Jul 2025 239th kg583 🇺🇸 830 80 457ms 20 Feb 2026 240th primo-ppcg 🇹🇭 830 232 525ms 13 Aug 2025 First Prev 161–240 of 1,007 Next Last