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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 226th MeWhenI 🇻🇦 814 85 2ms 5 Oct 2024 227th MeWhenI 🇻🇦 813 85 104ms 4 Oct 2024 228th GolfingSuccess 🇬🇷 813 98 16ms 5 Oct 2024 228th firegene 🇮🇪 813 98 16ms 21 Oct 2024 228th albanian-laundromat 813 98 16ms 25 days ago 231st emgordon154 813 205 421ms 7 Mar 2025 232nd Shanethegamer 🇺🇸 812 70 986ms 9 Apr 2025 233rd sean-niemann 🇺🇸 811 115 335ms 24 Sep 2025 233rd stefangimmillaro 811 115 329ms 6 Oct 2025 235th ovs-code 🇩🇪 810 106 385ms 1 Oct 2024 235th inventshah 810 106 381ms 1 Oct 2024 237th kg583 🇺🇸 810 124 7ms 20 Oct 2024 237th AlephSquirrel 810 124 7ms 21 Oct 2024 239th Natanaelel 🇸🇪 809 59 36ms 7 Feb 2025 240th kg583 🇺🇸 808 82 615ms 1 Oct 2024 240th sean-niemann 🇺🇸 808 82 450ms 23 Dec 2024 242nd stefangimmillaro 808 134 56ms 3 Oct 2024 243rd stefangimmillaro 807 126 2ms 3 Oct 2024 244th GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 245th trinityy-7 804 80 9ms 23 Jul 2025 246th SirBogman 🇺🇸 804 99 16ms 8 Oct 2024 247th error256 804 116 336ms 24 Sep 2025 248th GrayJoKing 🇦🇺 803 58 7ms 24 Oct 2024 249th xsot 🇸🇬 803 125 7ms 20 Oct 2024 250th antimon2 🇯🇵 802 70 502ms 9 Oct 2024 251st DialFrost 🇸🇬 802 106 25ms 23 Mar 2025 252nd ovs-code 🇩🇪 802 119 25ms 1 Oct 2024 253rd ovs-code 🇩🇪 801 75 1,110ms 1 Oct 2024 254th MeWhenI 🇻🇦 801 127 2ms 5 Oct 2024 254th albanian-laundromat 801 127 3ms 25 days ago 256th Shanethegamer 🇺🇸 801 208 1,586ms 14 Apr 2025 256th DialFrost 🇸🇬 801 208 453ms 18 Apr 2025 258th stefangimmillaro 800 89 381ms 4 Oct 2024 259th Shanethegamer 🇺🇸 800 138 171ms 3 Oct 2024 260th MeWhenI 🇻🇦 799 88 2ms 2 Oct 2024 261st duckyluuk 🇳🇱 798 83 403ms 3 Oct 2024 261st emgordon154 798 83 563ms 18 Nov 2024 263rd edsrzf 🇳🇿 797 117 325ms 24 Sep 2025 264th 2bular 796 49 31ms 19 days ago 265th anter69 🇭🇺 796 100 16ms 1 Oct 2024 265th bzijlema 🇳🇱 796 100 16ms 10 Oct 2024 265th bricknellj 796 100 16ms 4 Mar 2025 268th DialFrost 🇸🇬 795 85 6ms 1 Oct 2024 268th xsot 🇸🇬 795 85 4ms 7 Oct 2024 270th sean-niemann 🇺🇸 795 92 112ms 1 Oct 2025 271st albanian-laundromat 794 74 784ms 25 days ago 272nd tayloia 🇬🇧 794 81 10ms 3 Oct 2024 272nd targrik 794 81 9ms 8 Feb 2025 274th stefangimmillaro 794 87 102ms 4 Oct 2024 275th Shanethegamer 🇺🇸 794 102 384ms 4 Oct 2024 276th Shanethegamer 🇺🇸 794 128 2ms 3 Oct 2024 277th kg583 🇺🇸 794 160 39ms 13 Feb 2025 277th CLOStrophobic 🇮🇹 794 160 41ms 27 Feb 2025 279th albanian-laundromat 793 120 42ms 25 days ago 280th edsrzf 🇳🇿 791 76 1,165ms 1 Oct 2024 281st DialFrost 🇸🇬 791 84 2,866ms 26 Oct 2024 282nd MeWhenI 🇻🇦 791 90 419ms 2 Oct 2024 283rd jared-hughes 791 203 101ms 20 Dec 2024 284th saito-ta 🇯🇵 790 74 8ms 1 Oct 2024 285th pardouin 🇫🇷 789 81 129ms 29 Jan 2025 285th ovs-code 🇩🇪 789 81 133ms 17 Apr 2025 287th ovs-code 🇩🇪 789 84 415ms 3 Oct 2024 287th Shanethegamer 🇺🇸 789 84 410ms 3 Oct 2024 289th lifthrasiir 🇰🇷 789 101 17ms 21 Nov 2024 289th btjones0 789 101 18ms 2 Dec 2024 291st Natanaelel 🇸🇪 788 48 119ms 1 Oct 2024 292nd MeWhenI 🇻🇦 788 109 382ms 2 Oct 2024 293rd emgordon154 788 151 255ms 17 Jan 2025 294th KingSkyrock 🇺🇸 785 82 9ms 14 Oct 2024 295th Shanethegamer 🇺🇸 785 88 104ms 4 Oct 2024 296th kg583 🇺🇸 785 94 4ms 15 days ago 297th SirBogman 🇺🇸 785 138 43ms 11 Jul 2025 298th edsrzf 🇳🇿 784 119 152ms 23 Jul 2025 298th namelessiw 784 119 346ms 9 Oct 2025 300th stefangimmillaro 783 61 36ms 1 Oct 2024 First Prev 226–300 of 831 Next Last