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 241st retrohun 824 71 9ms 10 Jan 2025 242nd DialFrost 🇸🇬 822 82 115ms 23 Jun 2025 243rd MeWhenI 🇻🇦 822 92 11ms 24 Dec 2024 244th plcc0 822 97 17ms 12 Jan 2026 245th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 246th sean-niemann 🇺🇸 821 48 5ms 9 Aug 2025 247th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 248th ovs-code 🇩🇪 820 106 431ms 1 Oct 2024 248th inventshah 820 106 448ms 1 Oct 2024 250th MeWhenI 🇻🇦 819 114 470ms 7 Nov 2025 251st frosster 🇨🇦 818 97 2ms 11 Feb 2026 252nd GrayJoKing 🇦🇺 818 101 6ms 27 Feb 2026 253rd MeWhenI 🇻🇦 817 85 114ms 4 Oct 2024 254th MeWhenI 🇻🇦 817 104 1,025ms 2 Oct 2024 255th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 256th MeWhenI 🇻🇦 817 186 16ms 2 Oct 2024 257th Shanethegamer 🇺🇸 816 69 324ms 2 Oct 2024 258th sisyphus-ppcg 🇦🇺 816 83 8ms 2 Oct 2024 259th MeWhenI 🇻🇦 816 85 2ms 5 Oct 2024 260th lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 261st GolfingSuccess 🇬🇷 814 98 17ms 5 Oct 2024 261st albanian-laundromat 814 98 17ms 3 Nov 2025 263rd albanian-laundromat 813 118 4ms 11 Dec 2025 264th emgordon154 813 205 1,419ms 7 Mar 2025 265th Shanethegamer 🇺🇸 812 70 1,296ms 9 Apr 2025 266th sean-niemann 🇺🇸 812 115 361ms 24 Sep 2025 266th stefangimmillaro 812 115 671ms 6 Oct 2025 268th Natanaelel 🇸🇪 811 59 35ms 7 Feb 2025 269th stefangimmillaro 810 126 2ms 3 Oct 2024 270th sean-niemann 🇺🇸 809 82 393ms 23 Dec 2024 271st CLOStrophobic 🇮🇹 808 119 6ms 24 Feb 2025 272nd stefangimmillaro 808 134 41ms 3 Oct 2024 273rd GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 274th trinityy-7 806 80 10ms 23 Jul 2025 275th SirBogman 🇺🇸 806 99 16ms 8 Oct 2024 275th solisolu 806 99 17ms 18 days ago 275th BrunoVisnadi 🇧🇷 806 99 17ms 10 days ago 278th error256 805 116 494ms 24 Sep 2025 279th albanian-laundromat 805 148 279ms 3 Dec 2025 280th antimon2 🇯🇵 804 70 531ms 9 Oct 2024 281st MeWhenI 🇻🇦 804 127 2ms 5 Oct 2024 281st albanian-laundromat 804 127 3ms 3 Nov 2025 283rd GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 284th MeWhenI 🇻🇦 803 88 1ms 2 Oct 2024 285th Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 286th stefangimmillaro 802 89 418ms 4 Oct 2024 287th DialFrost 🇸🇬 802 106 24ms 23 Mar 2025 288th ovs-code 🇩🇪 802 119 15ms 1 Oct 2024 289th albanian-laundromat 802 120 42ms 3 Nov 2025 290th edsrzf 🇳🇿 801 104 437ms 21 Feb 2026 291st Shanethegamer 🇺🇸 801 208 1,478ms 14 Apr 2025 291st DialFrost 🇸🇬 801 208 1,440ms 18 Apr 2025 293rd anter69 🇭🇺 800 71 1,213ms 25 Feb 2026 294th Shanethegamer 🇺🇸 800 102 451ms 4 Oct 2024 295th duckyluuk 🇳🇱 799 83 458ms 3 Oct 2024 295th emgordon154 799 83 434ms 18 Nov 2024 297th sean-niemann 🇺🇸 799 92 161ms 1 Oct 2025 298th stefangimmillaro 798 87 111ms 4 Oct 2024 299th bzijlema 🇳🇱 798 100 18ms 10 Oct 2024 299th bricknellj 798 100 17ms 4 Mar 2025 301st DialFrost 🇸🇬 797 85 8ms 1 Oct 2024 301st xsot 🇸🇬 797 85 5ms 7 Oct 2024 303rd MeWhenI 🇻🇦 797 109 445ms 2 Oct 2024 304th Shanethegamer 🇺🇸 797 128 2ms 3 Oct 2024 305th 2bular 796 49 31ms 8 Nov 2025 306th tayloia 🇬🇧 796 81 10ms 3 Oct 2024 306th targrik 796 81 10ms 8 Feb 2025 308th m-tkach 🇺🇦 796 138 29ms 3 Oct 2024 309th DialFrost 🇸🇬 794 84 2,655ms 26 Oct 2024 310th MeWhenI 🇻🇦 793 90 421ms 2 Oct 2024 311th Natanaelel 🇸🇪 791 48 136ms 1 Oct 2024 312th jared-hughes 791 203 88ms 20 Dec 2024 313th saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 314th ovs-code 🇩🇪 790 84 458ms 3 Oct 2024 314th Shanethegamer 🇺🇸 790 84 451ms 3 Oct 2024 316th lifthrasiir 🇰🇷 790 101 16ms 21 Nov 2024 316th btjones0 790 101 17ms 2 Dec 2024 318th pardouin 🇫🇷 789 81 139ms 29 Jan 2025 318th ovs-code 🇩🇪 789 81 144ms 17 Apr 2025 320th Shanethegamer 🇺🇸 789 88 122ms 4 Oct 2024 First Prev 241–320 of 921 Next Last