Card Number Validation in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 Calendar Connect Four 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 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 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 Erlang 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 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 Erlang 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 Calendar Connect Four 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 Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 224th albanian-laundromat 812 98 16ms 34 hours ago 227th ovs-code 🇩🇪 810 106 401ms 1 Oct 2024 227th inventshah 810 106 433ms 1 Oct 2024 229th kg583 🇺🇸 810 124 7ms 20 Oct 2024 229th AlephSquirrel 810 124 7ms 21 Oct 2024 231st Natanaelel 🇸🇪 809 59 36ms 7 Feb 2025 232nd stefangimmillaro 808 134 56ms 3 Oct 2024 233rd sean-niemann 🇺🇸 807 115 377ms 24 Sep 2025 233rd stefangimmillaro 807 115 355ms 6 Oct 2025 235th stefangimmillaro 807 126 2ms 3 Oct 2024 236th GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 237th kg583 🇺🇸 806 82 615ms 1 Oct 2024 237th sean-niemann 🇺🇸 806 82 450ms 23 Dec 2024 239th trinityy-7 804 80 10ms 23 Jul 2025 240th SirBogman 🇺🇸 804 99 18ms 8 Oct 2024 241st MeWhenI 🇻🇦 804 186 18ms 2 Oct 2024 242nd GrayJoKing 🇦🇺 803 58 7ms 24 Oct 2024 243rd xsot 🇸🇬 803 125 7ms 20 Oct 2024 244th antimon2 🇯🇵 802 70 567ms 9 Oct 2024 245th DialFrost 🇸🇬 802 106 25ms 23 Mar 2025 246th ovs-code 🇩🇪 802 119 25ms 1 Oct 2024 247th ovs-code 🇩🇪 801 75 1,110ms 1 Oct 2024 248th MeWhenI 🇻🇦 801 127 2ms 5 Oct 2024 248th albanian-laundromat 801 127 3ms 32 hours ago 250th Shanethegamer 🇺🇸 801 208 1,934ms 14 Apr 2025 250th DialFrost 🇸🇬 801 208 817ms 18 Apr 2025 252nd stefangimmillaro 800 89 421ms 4 Oct 2024 253rd error256 800 116 460ms 24 Sep 2025 254th Shanethegamer 🇺🇸 800 138 171ms 3 Oct 2024 255th duckyluuk 🇳🇱 797 83 403ms 3 Oct 2024 255th emgordon154 797 83 563ms 18 Nov 2024 257th MeWhenI 🇻🇦 797 88 2ms 2 Oct 2024 258th anter69 🇭🇺 796 100 17ms 1 Oct 2024 258th bzijlema 🇳🇱 796 100 16ms 10 Oct 2024 258th bricknellj 796 100 17ms 4 Mar 2025 261st DialFrost 🇸🇬 795 85 7ms 1 Oct 2024 261st xsot 🇸🇬 795 85 4ms 7 Oct 2024 263rd sean-niemann 🇺🇸 795 92 112ms 1 Oct 2025 264th albanian-laundromat 794 74 748ms 33 hours ago 265th tayloia 🇬🇧 794 81 10ms 3 Oct 2024 265th targrik 794 81 10ms 8 Feb 2025 267th stefangimmillaro 794 87 125ms 4 Oct 2024 268th duckyluuk 🇳🇱 794 99 11ms 17 Dec 2024 269th Shanethegamer 🇺🇸 794 102 384ms 4 Oct 2024 270th edsrzf 🇳🇿 794 117 492ms 24 Sep 2025 271st Shanethegamer 🇺🇸 794 128 2ms 3 Oct 2024 272nd kg583 🇺🇸 794 160 39ms 13 Feb 2025 272nd CLOStrophobic 🇮🇹 794 160 43ms 27 Feb 2025 274th albanian-laundromat 793 120 42ms 33 hours ago 275th edsrzf 🇳🇿 791 76 1,165ms 1 Oct 2024 276th DialFrost 🇸🇬 791 84 2,866ms 26 Oct 2024 277th MeWhenI 🇻🇦 791 90 389ms 2 Oct 2024 278th jared-hughes 791 203 101ms 20 Dec 2024 279th saito-ta 🇯🇵 790 74 8ms 1 Oct 2024 280th pardouin 🇫🇷 789 81 135ms 29 Jan 2025 280th ovs-code 🇩🇪 789 81 145ms 17 Apr 2025 282nd Natanaelel 🇸🇪 788 48 112ms 1 Oct 2024 283rd lifthrasiir 🇰🇷 788 101 20ms 21 Nov 2024 283rd btjones0 788 101 18ms 2 Dec 2024 283rd CornerMercury 🇬🇧 788 101 21ms 25 Sep 2025 286th MeWhenI 🇻🇦 788 109 426ms 2 Oct 2024 287th emgordon154 788 151 273ms 17 Jan 2025 288th ovs-code 🇩🇪 787 84 415ms 3 Oct 2024 288th Shanethegamer 🇺🇸 787 84 410ms 3 Oct 2024 290th KingSkyrock 🇺🇸 785 82 10ms 14 Oct 2024 291st Shanethegamer 🇺🇸 785 88 124ms 4 Oct 2024 292nd SirBogman 🇺🇸 785 138 43ms 11 Jul 2025 293rd stefangimmillaro 783 61 36ms 1 Oct 2024 294th Shanethegamer 🇺🇸 783 152 284ms 3 Oct 2024 294th targrik 783 152 279ms 7 Jul 2025 296th Shanethegamer 🇺🇸 782 91 332ms 3 Oct 2024 297th edsrzf 🇳🇿 782 119 151ms 23 Jul 2025 298th annaproxy 781 102 19ms 1 Oct 2024 299th namelessiw 780 119 467ms 25 days ago 300th MeWhenI 🇻🇦 780 122 55ms 5 Oct 2024 First Prev 226–300 of 809 Next Last