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 DialFrost 🇸🇬 828 82 113ms 23 Jun 2025 242nd stefangimmillaro 828 99 129ms 3 Oct 2024 243rd dcgjb 827 78 12ms 6 May 2025 244th JayXon 🇺🇸 827 186 1,687ms 2 days ago 245th m-tkach 🇺🇦 826 58 38ms 8 Oct 2024 246th GrayJoKing 🇦🇺 826 101 8ms 27 Feb 2026 247th ovs-code 🇩🇪 824 65 5ms 30 Oct 2024 248th retrohun 824 71 9ms 10 Jan 2025 249th MeWhenI 🇻🇦 824 104 1,025ms 2 Oct 2024 250th sean-niemann 🇺🇸 823 48 4ms 9 Aug 2025 251st MeWhenI 🇻🇦 822 92 12ms 24 Dec 2024 252nd plcc0 822 97 18ms 12 Jan 2026 253rd albanian-laundromat 🇺🇸 822 118 4ms 11 Dec 2025 254th MeWhenI 🇻🇦 821 85 2ms 5 Oct 2024 254th albanian-laundromat 🇺🇸 821 85 2ms 5 days ago 256th ovs-code 🇩🇪 821 106 437ms 1 Oct 2024 256th inventshah 821 106 456ms 1 Oct 2024 258th MeWhenI 🇻🇦 820 85 108ms 4 Oct 2024 259th MeWhenI 🇻🇦 820 114 470ms 7 Nov 2025 260th frosster 🇨🇦 819 97 2ms 11 Feb 2026 261st sisyphus-ppcg 🇦🇺 818 83 10ms 2 Oct 2024 262nd Shanethegamer 🇺🇸 817 69 322ms 2 Oct 2024 263rd canissimia 🇦🇶 817 130 3ms 4 Oct 2024 264th MeWhenI 🇻🇦 817 186 15ms 2 Oct 2024 265th lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 266th Shanethegamer 🇺🇸 814 70 1,296ms 9 Apr 2025 267th GolfingSuccess 🇬🇷 814 98 18ms 5 Oct 2024 267th albanian-laundromat 🇺🇸 814 98 18ms 3 Nov 2025 269th sean-niemann 🇺🇸 813 115 361ms 24 Sep 2025 269th stefangimmillaro 813 115 671ms 6 Oct 2025 271st stefangimmillaro 813 126 2ms 3 Oct 2024 272nd stefangimmillaro 813 134 41ms 3 Oct 2024 273rd emgordon154 813 205 1,428ms 7 Mar 2025 274th jusaka 812 35 3ms 4 days ago 275th Natanaelel 🇸🇪 812 59 35ms 7 Feb 2025 276th CLOStrophobic 🇮🇹 811 119 6ms 24 Feb 2025 277th sean-niemann 🇺🇸 810 82 473ms 23 Dec 2024 278th DialFrost 🇸🇬 808 106 24ms 23 Mar 2025 279th ovs-code 🇩🇪 808 119 15ms 1 Oct 2024 280th albanian-laundromat 🇺🇸 808 120 42ms 3 Nov 2025 281st MeWhenI 🇻🇦 807 127 2ms 5 Oct 2024 281st albanian-laundromat 🇺🇸 807 127 3ms 3 Nov 2025 283rd albanian-laundromat 🇺🇸 807 148 352ms 3 Dec 2025 284th GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 285th antimon2 🇯🇵 806 70 541ms 9 Oct 2024 286th trinityy-7 806 80 11ms 23 Jul 2025 287th SirBogman 🇺🇸 806 99 17ms 8 Oct 2024 287th solisolu 806 99 22ms 13 Mar 2026 287th BrunoVisnadi 🇧🇷 806 99 16ms 26 days ago 290th error256 806 116 494ms 24 Sep 2025 291st Shanethegamer 🇺🇸 806 138 142ms 3 Oct 2024 292nd Shanethegamer 🇺🇸 805 102 451ms 4 Oct 2024 293rd MeWhenI 🇻🇦 804 88 1ms 2 Oct 2024 294th stefangimmillaro 804 89 479ms 4 Oct 2024 295th edsrzf 🇳🇿 804 104 405ms 21 Feb 2026 296th GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 297th anter69 🇭🇺 803 71 1,213ms 25 Feb 2026 298th sean-niemann 🇺🇸 803 92 158ms 1 Oct 2025 299th m-tkach 🇺🇦 803 138 29ms 3 Oct 2024 300th stefangimmillaro 802 87 108ms 4 Oct 2024 301st duckyluuk 🇳🇱 801 83 532ms 3 Oct 2024 301st emgordon154 801 83 420ms 18 Nov 2024 303rd Shanethegamer 🇺🇸 801 208 1,427ms 14 Apr 2025 303rd DialFrost 🇸🇬 801 208 1,464ms 18 Apr 2025 305th Shanethegamer 🇺🇸 800 128 2ms 3 Oct 2024 306th 2bular 798 49 31ms 8 Nov 2025 307th DialFrost 🇸🇬 798 85 7ms 1 Oct 2024 307th xsot 🇸🇬 798 85 5ms 7 Oct 2024 309th bzijlema 🇳🇱 798 100 19ms 10 Oct 2024 309th bricknellj 798 100 20ms 4 Mar 2025 311th MeWhenI 🇻🇦 798 109 444ms 2 Oct 2024 312th tayloia 🇬🇧 796 81 11ms 3 Oct 2024 312th targrik 796 81 11ms 8 Feb 2025 314th DialFrost 🇸🇬 796 84 2,495ms 26 Oct 2024 315th Natanaelel 🇸🇪 795 48 136ms 1 Oct 2024 316th MeWhenI 🇻🇦 795 90 488ms 2 Oct 2024 317th vang1ong7ang 795 118 151ms 12 days ago 318th MeWhenI 🇻🇦 795 122 39ms 5 Oct 2024 319th Shanethegamer 🇺🇸 792 88 114ms 4 Oct 2024 320th pardouin 🇫🇷 791 81 137ms 29 Jan 2025 First Prev 241–320 of 1,005 Next Last