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 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 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 Calendar 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 Multitap Input NFA Simulator 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Calendar 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 Multitap Input NFA Simulator 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 63ms 2 Oct 2024 2nd ovs-code 🇩🇪 979 29 2ms 2 Oct 2024 3rd khvdm 960 83 31ms 7 Jun 2025 4th bizy-coder 948 84 19ms 1 Oct 2024 4th pardouin 🇫🇷 948 84 20ms 1 Oct 2024 4th AlephSquirrel 948 84 18ms 1 Oct 2024 4th btnlq 948 84 19ms 1 Oct 2024 4th Seek64 🇩🇪 948 84 19ms 1 Oct 2024 4th m-tkach 🇺🇦 948 84 20ms 1 Oct 2024 4th Rubiksmath 948 84 19ms 7 Oct 2024 4th JayXon 🇺🇸 948 84 22ms 13 Oct 2024 4th kops-cg 948 84 21ms 22 Feb 2025 4th xnor-gate 948 84 19ms 23 Feb 2025 14th duckyluuk 🇳🇱 947 68 10ms 4 Oct 2024 14th JayXon 🇺🇸 947 68 9ms 4 Oct 2024 14th emplv 🇱🇻 947 68 10ms 24 Oct 2024 14th rucin93 🇵🇱 947 68 10ms 24 Oct 2024 14th sean-niemann 🇺🇸 947 68 9ms 13 Nov 2024 19th 2bular 946 30 2ms 1 Oct 2024 19th zacjl 946 30 3ms 3 Oct 2024 21st inventshah 937 85 20ms 4 Oct 2024 22nd JayXon 🇺🇸 936 51 36ms 13 Oct 2024 22nd radarek 🇵🇱 936 51 34ms 23 Jul 2025 24th sisyphus-ppcg 🇦🇺 934 42 6ms 1 Oct 2024 24th saito-ta 🇯🇵 934 42 6ms 1 Oct 2024 26th nwellnhof 🇩🇪 933 69 9ms 8 Oct 2024 27th ovs-code 🇩🇪 928 42 34ms 1 Mar 2025 28th hallvabo 🇳🇴 926 86 19ms 4 Jun 2025 29th JayXon 🇺🇸 925 76 2ms 11 Oct 2024 30th AdrienHache 🇫🇷 924 39 53ms 2 Oct 2024 31st GrayJoKing 🇦🇺 922 41 122ms 1 Oct 2024 31st nwellnhof 🇩🇪 922 41 120ms 2 Oct 2024 33rd xsot 🇸🇬 920 48 2ms 4 Oct 2024 34th stefangimmillaro 920 70 9ms 3 Oct 2024 35th JayXon 🇺🇸 920 72 483ms 2 Oct 2024 36th bstrat 916 31 2ms 6 Oct 2024 37th nwellnhof 🇩🇪 915 51 344ms 1 Oct 2024 37th bitsandbeyond 🇳🇱 915 51 348ms 7 Oct 2024 39th primo-ppcg 🇹🇭 913 43 4ms 26 Jan 2025 40th JayXon 🇺🇸 913 78 402ms 13 Oct 2024 40th AdrienHache 🇫🇷 913 78 359ms 20 Sep 2025 42nd GrayJoKing 🇦🇺 907 71 9ms 1 Oct 2024 42nd pardouin 🇫🇷 907 71 9ms 2 Oct 2024 42nd ovs-code 🇩🇪 907 71 9ms 3 Oct 2024 42nd vlpx 🇫🇮 907 71 9ms 23 Oct 2024 46th JayXon 🇺🇸 906 62 582ms 13 Oct 2024 47th JayXon 🇺🇸 905 103 334ms 25 Sep 2025 48th error256 902 63 1,016ms 7 Oct 2024 48th JayXon 🇺🇸 902 63 911ms 13 Oct 2024 50th rhdqor213 902 78 2ms 20 mins ago 51st emplv 🇱🇻 901 75 13ms 24 Oct 2024 52nd namelessiw 901 79 357ms 1 Aug 2025 53rd JayXon 🇺🇸 901 88 2ms 5 Oct 2024 53rd edsrzf 🇳🇿 901 88 2ms 11 days ago 55th rucin93 🇵🇱 900 71 128ms 17 Dec 2024 55th JayXon 🇺🇸 900 71 128ms 17 Dec 2024 55th sean-niemann 🇺🇸 900 71 130ms 8 Jan 2025 58th inventshah 898 74 2,872ms 25 Oct 2024 58th JayXon 🇺🇸 898 74 2,767ms 13 Nov 2024 58th pardouin 🇫🇷 898 74 2,889ms 17 Dec 2024 61st saito-ta 🇯🇵 897 54 3ms 1 Oct 2024 61st DialFrost 🇸🇬 897 54 3ms 11 Jan 2025 61st frankgraziano 897 54 3ms 23 Jan 2025 64th JayXon 🇺🇸 897 104 148ms 31 May 2025 65th mousetail 🇳🇱 896 52 6ms 25 Sep 2025 66th bizy-coder 895 74 507ms 1 Oct 2024 66th pardouin 🇫🇷 895 74 493ms 1 Oct 2024 66th m-tkach 🇺🇦 895 74 508ms 3 Oct 2024 69th xsot 🇸🇬 894 72 9ms 10 Oct 2024 70th JayXon 🇺🇸 894 96 374ms 11 Oct 2024 71st canissimia 🇦🇶 893 28 41ms 2 Oct 2024 72nd ovs-code 🇩🇪 891 63 523ms 2 Oct 2024 73rd sean-niemann 🇺🇸 890 66 718ms 31 Aug 2025 73rd edsrzf 🇳🇿 890 66 698ms 4 Sep 2025 75th nwellnhof 🇩🇪 890 80 442ms 2 Oct 2024 1–75 of 838 Next Last