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 241st Shanethegamer 🇺🇸 812 70 1,296ms 9 Apr 2025 242nd sean-niemann 🇺🇸 812 115 361ms 24 Sep 2025 242nd stefangimmillaro 812 115 671ms 6 Oct 2025 244th Natanaelel 🇸🇪 810 59 36ms 7 Feb 2025 245th kg583 🇺🇸 808 82 515ms 1 Oct 2024 245th sean-niemann 🇺🇸 808 82 530ms 23 Dec 2024 247th stefangimmillaro 808 134 41ms 3 Oct 2024 248th stefangimmillaro 807 126 2ms 3 Oct 2024 249th GolfingSuccess 🇬🇷 806 31 74ms 5 Oct 2024 250th trinityy-7 805 80 9ms 23 Jul 2025 251st SirBogman 🇺🇸 805 99 16ms 8 Oct 2024 252nd error256 805 116 494ms 24 Sep 2025 253rd albanian-laundromat 805 148 281ms 3 Dec 2025 254th GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 255th Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 256th antimon2 🇯🇵 802 70 522ms 9 Oct 2024 257th stefangimmillaro 802 89 453ms 4 Oct 2024 258th DialFrost 🇸🇬 802 106 24ms 23 Mar 2025 259th ovs-code 🇩🇪 802 119 14ms 1 Oct 2024 260th MeWhenI 🇻🇦 801 88 1ms 2 Oct 2024 261st frosster 801 99 2ms 6 hours ago 262nd MeWhenI 🇻🇦 801 127 2ms 5 Oct 2024 262nd albanian-laundromat 801 127 3ms 3 Nov 2025 264th Shanethegamer 🇺🇸 801 208 1,415ms 14 Apr 2025 264th DialFrost 🇸🇬 801 208 1,422ms 18 Apr 2025 266th sean-niemann 🇺🇸 799 92 116ms 1 Oct 2025 267th duckyluuk 🇳🇱 798 83 458ms 3 Oct 2024 267th emgordon154 798 83 434ms 18 Nov 2024 269th albanian-laundromat 797 74 1,047ms 3 Nov 2025 270th anter69 🇭🇺 797 100 17ms 1 Oct 2024 270th bzijlema 🇳🇱 797 100 18ms 10 Oct 2024 270th bricknellj 797 100 17ms 4 Mar 2025 273rd 2bular 796 49 31ms 8 Nov 2025 274th kg583 🇺🇸 796 124 7ms 20 Oct 2024 274th AlephSquirrel 796 124 7ms 21 Oct 2024 276th tayloia 🇬🇧 795 81 10ms 3 Oct 2024 276th targrik 795 81 10ms 8 Feb 2025 276th Lv0Sys 🇵🇱 795 81 10ms 10 Dec 2025 279th DialFrost 🇸🇬 795 85 7ms 1 Oct 2024 279th xsot 🇸🇬 795 85 4ms 7 Oct 2024 281st MeWhenI 🇻🇦 795 109 389ms 2 Oct 2024 282nd DialFrost 🇸🇬 794 84 2,408ms 26 Oct 2024 283rd stefangimmillaro 794 87 125ms 4 Oct 2024 284th Shanethegamer 🇺🇸 794 102 384ms 4 Oct 2024 285th Shanethegamer 🇺🇸 794 128 2ms 3 Oct 2024 286th kg583 🇺🇸 794 160 41ms 13 Feb 2025 286th CLOStrophobic 🇮🇹 794 160 40ms 27 Feb 2025 288th MeWhenI 🇻🇦 793 90 461ms 2 Oct 2024 289th albanian-laundromat 793 120 42ms 3 Nov 2025 290th Natanaelel 🇸🇪 791 48 118ms 1 Oct 2024 291st jared-hughes 791 203 101ms 20 Dec 2024 292nd saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 293rd xsot 🇸🇬 790 125 7ms 20 Oct 2024 294th pardouin 🇫🇷 789 81 139ms 29 Jan 2025 294th ovs-code 🇩🇪 789 81 126ms 17 Apr 2025 296th ovs-code 🇩🇪 789 84 458ms 3 Oct 2024 296th Shanethegamer 🇺🇸 789 84 451ms 3 Oct 2024 298th lifthrasiir 🇰🇷 789 101 17ms 21 Nov 2024 298th btjones0 789 101 18ms 2 Dec 2024 300th emgordon154 789 151 297ms 17 Jan 2025 301st emgordon154 787 164 1,815ms 22 Dec 2025 302nd KingSkyrock 🇺🇸 785 82 10ms 14 Oct 2024 303rd Shanethegamer 🇺🇸 785 88 117ms 4 Oct 2024 304th kg583 🇺🇸 785 94 4ms 13 Nov 2025 305th namelessiw 785 119 565ms 9 Oct 2025 306th SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 307th Shanethegamer 🇺🇸 784 91 455ms 3 Oct 2024 308th edsrzf 🇳🇿 784 119 142ms 23 Jul 2025 309th Shanethegamer 🇺🇸 784 152 274ms 3 Oct 2024 309th targrik 784 152 322ms 7 Jul 2025 311th stefangimmillaro 783 61 35ms 1 Oct 2024 312th annaproxy 781 102 17ms 1 Oct 2024 312th snoozingnewt 🇨🇦 781 102 10ms 6 Dec 2025 312th solisolu 781 102 10ms 31 Dec 2025 315th SirBogman 🇺🇸 780 50 34ms 8 Jul 2025 316th MeWhenI 🇻🇦 780 122 39ms 5 Oct 2024 317th GrayJoKing 🇦🇺 779 82 134ms 1 Oct 2024 318th sean-niemann 🇺🇸 779 107 332ms 3 Oct 2024 319th Shanethegamer 🇺🇸 778 120 364ms 24 Sep 2025 320th adriweb 🇫🇷 777 102 1ms 5 Oct 2024 First Prev 241–320 of 876 Next Last