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 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 Multitap Input 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 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 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 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 Multitap Input 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 240th stefangimmillaro 811 115 463ms 6 Oct 2025 242nd Natanaelel 🇸🇪 810 59 35ms 7 Feb 2025 243rd kg583 🇺🇸 810 124 7ms 20 Oct 2024 243rd AlephSquirrel 810 124 7ms 21 Oct 2024 245th kg583 🇺🇸 808 82 505ms 1 Oct 2024 245th sean-niemann 🇺🇸 808 82 444ms 23 Dec 2024 247th stefangimmillaro 808 134 41ms 3 Oct 2024 248th stefangimmillaro 807 126 2ms 3 Oct 2024 249th GolfingSuccess 🇬🇷 806 31 71ms 5 Oct 2024 250th trinityy-7 805 80 9ms 23 Jul 2025 251st SirBogman 🇺🇸 805 99 16ms 8 Oct 2024 252nd albanian-laundromat 805 148 255ms 3 Dec 2025 253rd error256 804 116 421ms 24 Sep 2025 254th GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 255th xsot 🇸🇬 803 125 7ms 20 Oct 2024 256th Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 257th antimon2 🇯🇵 802 70 522ms 9 Oct 2024 258th stefangimmillaro 802 89 409ms 4 Oct 2024 259th DialFrost 🇸🇬 802 106 25ms 23 Mar 2025 260th ovs-code 🇩🇪 802 119 14ms 1 Oct 2024 261st Kacarott 🇦🇺 801 73 1,111ms 1 Oct 2024 261st chunes3 🇺🇸 801 73 1,046ms 2 Oct 2024 263rd MeWhenI 🇻🇦 801 127 2ms 5 Oct 2024 263rd albanian-laundromat 801 127 3ms 3 Nov 2025 265th Shanethegamer 🇺🇸 801 208 1,451ms 14 Apr 2025 265th DialFrost 🇸🇬 801 208 1,454ms 18 Apr 2025 267th MeWhenI 🇻🇦 800 88 1ms 2 Oct 2024 268th sean-niemann 🇺🇸 799 92 129ms 1 Oct 2025 269th duckyluuk 🇳🇱 798 83 504ms 3 Oct 2024 269th emgordon154 798 83 424ms 18 Nov 2024 271st albanian-laundromat 797 74 765ms 3 Nov 2025 272nd anter69 🇭🇺 797 100 16ms 1 Oct 2024 272nd bzijlema 🇳🇱 797 100 16ms 10 Oct 2024 272nd bricknellj 797 100 16ms 4 Mar 2025 275th 2bular 796 49 31ms 8 Nov 2025 276th tayloia 🇬🇧 795 81 10ms 3 Oct 2024 276th targrik 795 81 11ms 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 stefangimmillaro 794 87 125ms 4 Oct 2024 282nd Shanethegamer 🇺🇸 794 102 384ms 4 Oct 2024 283rd Shanethegamer 🇺🇸 794 128 2ms 3 Oct 2024 284th kg583 🇺🇸 794 160 42ms 13 Feb 2025 284th CLOStrophobic 🇮🇹 794 160 40ms 27 Feb 2025 286th DialFrost 🇸🇬 793 84 3,150ms 26 Oct 2024 287th MeWhenI 🇻🇦 793 90 435ms 2 Oct 2024 288th albanian-laundromat 793 120 42ms 3 Nov 2025 289th MeWhenI 🇻🇦 792 109 394ms 2 Oct 2024 290th jared-hughes 791 203 101ms 20 Dec 2024 291st saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 292nd pardouin 🇫🇷 789 81 129ms 29 Jan 2025 292nd ovs-code 🇩🇪 789 81 122ms 17 Apr 2025 294th ovs-code 🇩🇪 789 84 489ms 3 Oct 2024 294th Shanethegamer 🇺🇸 789 84 454ms 3 Oct 2024 296th lifthrasiir 🇰🇷 789 101 16ms 21 Nov 2024 296th btjones0 789 101 16ms 2 Dec 2024 298th emgordon154 789 151 262ms 17 Jan 2025 299th Natanaelel 🇸🇪 788 48 160ms 1 Oct 2024 300th emgordon154 787 164 1,837ms 21 days ago 301st KingSkyrock 🇺🇸 785 82 10ms 14 Oct 2024 302nd Shanethegamer 🇺🇸 785 88 117ms 4 Oct 2024 303rd kg583 🇺🇸 785 94 4ms 13 Nov 2025 304th SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 305th Shanethegamer 🇺🇸 784 91 416ms 3 Oct 2024 306th edsrzf 🇳🇿 784 119 150ms 23 Jul 2025 306th namelessiw 784 119 440ms 9 Oct 2025 308th Shanethegamer 🇺🇸 784 152 264ms 3 Oct 2024 308th targrik 784 152 264ms 7 Jul 2025 310th stefangimmillaro 783 61 38ms 1 Oct 2024 311th annaproxy 781 102 16ms 1 Oct 2024 311th snoozingnewt 🇨🇦 781 102 9ms 6 Dec 2025 311th solisolu 781 102 10ms 12 days ago 314th SirBogman 🇺🇸 780 50 34ms 8 Jul 2025 315th ovs-code 🇩🇪 780 75 1,104ms 1 Oct 2024 316th MeWhenI 🇻🇦 780 122 39ms 5 Oct 2024 317th GrayJoKing 🇦🇺 779 82 127ms 1 Oct 2024 318th sean-niemann 🇺🇸 779 107 332ms 3 Oct 2024 319th Shanethegamer 🇺🇸 777 120 454ms 24 Sep 2025 320th DialFrost 🇸🇬 776 76 745ms 30 Aug 2025 First Prev 241–320 of 862 Next Last