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 1st saito-ta 🇯🇵 1,000 25 71ms 2 Oct 2024 2nd ovs-code 🇩🇪 979 29 2ms 2 Oct 2024 3rd khvdm 960 83 20ms 7 Jun 2025 4th bizy-coder 949 84 20ms 1 Oct 2024 4th pardouin 🇫🇷 949 84 21ms 1 Oct 2024 4th AlephSquirrel 949 84 20ms 1 Oct 2024 4th btnlq 949 84 21ms 1 Oct 2024 4th Seek64 🇩🇪 949 84 20ms 1 Oct 2024 4th m-tkach 🇺🇦 949 84 21ms 1 Oct 2024 4th Rubiksmath 949 84 22ms 7 Oct 2024 4th JayXon 🇺🇸 949 84 20ms 13 Oct 2024 4th kops-cg 949 84 20ms 22 Feb 2025 4th xnor-gate 949 84 21ms 23 Feb 2025 4th ryyyn 🇺🇸 949 84 21ms 17 days ago 4th Steffan153 🇫🇮 949 84 20ms 12 hours ago 16th duckyluuk 🇳🇱 947 68 10ms 4 Oct 2024 16th JayXon 🇺🇸 947 68 11ms 4 Oct 2024 16th emplv 🇱🇻 947 68 10ms 24 Oct 2024 16th rucin93 🇵🇱 947 68 9ms 24 Oct 2024 16th sean-niemann 🇺🇸 947 68 12ms 13 Nov 2024 16th Steffan153 🇫🇮 947 68 11ms 10 days ago 22nd 2bular 946 30 2ms 1 Oct 2024 22nd zacjl 946 30 3ms 3 Oct 2024 24th JayXon 🇺🇸 938 51 35ms 13 Oct 2024 24th radarek 🇵🇱 938 51 35ms 23 Jul 2025 26th inventshah 938 85 22ms 4 Oct 2024 27th sisyphus-ppcg 🇦🇺 937 42 6ms 1 Oct 2024 27th saito-ta 🇯🇵 937 42 6ms 1 Oct 2024 29th nwellnhof 🇩🇪 933 69 12ms 8 Oct 2024 30th JayXon 🇺🇸 929 76 2ms 11 Oct 2024 30th rhdqor213 929 76 2ms 5 Dec 2025 32nd AdrienHache 🇫🇷 928 39 47ms 2 Oct 2024 33rd ovs-code 🇩🇪 928 42 32ms 1 Mar 2025 34th hallvabo 🇳🇴 927 86 19ms 4 Jun 2025 35th GrayJoKing 🇦🇺 925 41 123ms 1 Oct 2024 35th nwellnhof 🇩🇪 925 41 128ms 2 Oct 2024 37th canissimia 🇦🇶 924 47 2ms 21 days ago 38th JayXon 🇺🇸 921 72 446ms 2 Oct 2024 39th stefangimmillaro 920 70 11ms 3 Oct 2024 40th bstrat 916 31 2ms 6 Oct 2024 41st primo-ppcg 🇹🇭 916 43 3ms 26 Jan 2025 42nd nwellnhof 🇩🇪 915 51 411ms 1 Oct 2024 42nd bitsandbeyond 🇳🇱 915 51 364ms 7 Oct 2024 44th JayXon 🇺🇸 915 78 456ms 13 Oct 2024 44th AdrienHache 🇫🇷 915 78 461ms 20 Sep 2025 46th GrayJoKing 🇦🇺 907 71 10ms 1 Oct 2024 46th pardouin 🇫🇷 907 71 11ms 2 Oct 2024 46th ovs-code 🇩🇪 907 71 12ms 3 Oct 2024 46th vlpx 🇫🇮 907 71 10ms 23 Oct 2024 50th JayXon 🇺🇸 906 62 537ms 13 Oct 2024 51st JayXon 🇺🇸 906 103 536ms 25 Sep 2025 52nd xsot 🇸🇬 905 48 2ms 4 Oct 2024 53rd JayXon 🇺🇸 905 96 397ms 11 Oct 2024 54th emplv 🇱🇻 903 75 14ms 24 Oct 2024 55th namelessiw 903 79 458ms 1 Aug 2025 56th error256 902 63 1,375ms 7 Oct 2024 56th JayXon 🇺🇸 902 63 1,235ms 13 Oct 2024 58th inventshah 902 74 2,417ms 25 Oct 2024 58th JayXon 🇺🇸 902 74 2,277ms 13 Nov 2024 58th pardouin 🇫🇷 902 74 2,226ms 17 Dec 2024 61st JayXon 🇺🇸 901 88 2ms 5 Oct 2024 61st edsrzf 🇳🇿 901 88 2ms 23 Nov 2025 63rd rucin93 🇵🇱 900 71 138ms 17 Dec 2024 63rd JayXon 🇺🇸 900 71 134ms 17 Dec 2024 63rd sean-niemann 🇺🇸 900 71 145ms 8 Jan 2025 66th sean-niemann 🇺🇸 898 64 785ms 4 days ago 66th edsrzf 🇳🇿 898 64 788ms 2 hours ago 68th saito-ta 🇯🇵 897 54 3ms 1 Oct 2024 68th DialFrost 🇸🇬 897 54 3ms 11 Jan 2025 68th frankgraziano 897 54 3ms 23 Jan 2025 71st JayXon 🇺🇸 897 104 145ms 31 May 2025 72nd mousetail 🇳🇱 896 52 6ms 25 Sep 2025 73rd bizy-coder 896 74 477ms 1 Oct 2024 73rd pardouin 🇫🇷 896 74 437ms 1 Oct 2024 73rd m-tkach 🇺🇦 896 74 508ms 3 Oct 2024 73rd Steffan153 🇫🇮 896 74 420ms 12 hours ago 77th xsot 🇸🇬 894 72 12ms 10 Oct 2024 77th edsrzf 🇳🇿 894 72 11ms 16 hours ago 79th KasperKivimaeki 🇫🇮 894 79 2ms 6 Dec 2025 80th canissimia 🇦🇶 893 28 41ms 2 Oct 2024 1–80 of 895 Next Last