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 nwellnhof 🇩🇪 829 105 444ms 22 Jan 2026 242nd DialFrost 🇸🇬 828 82 113ms 23 Jun 2025 243rd stefangimmillaro 828 99 128ms 3 Oct 2024 244th dcgjb 827 78 12ms 6 May 2025 245th JayXon 🇺🇸 827 186 1,687ms 7 days ago 246th m-tkach 🇺🇦 826 58 43ms 8 Oct 2024 247th GrayJoKing 🇦🇺 826 101 8ms 27 Feb 2026 248th ovs-code 🇩🇪 824 65 5ms 30 Oct 2024 249th retrohun 824 71 9ms 10 Jan 2025 250th MeWhenI 🇻🇦 824 104 20ms 2 Oct 2024 251st sean-niemann 🇺🇸 823 48 4ms 9 Aug 2025 252nd MeWhenI 🇻🇦 822 92 12ms 24 Dec 2024 253rd plcc0 822 97 18ms 12 Jan 2026 254th albanian-laundromat 🇺🇸 822 118 4ms 11 Dec 2025 255th MeWhenI 🇻🇦 821 85 2ms 5 Oct 2024 255th albanian-laundromat 🇺🇸 821 85 2ms 11 days ago 257th ovs-code 🇩🇪 821 106 439ms 1 Oct 2024 257th inventshah 821 106 420ms 1 Oct 2024 259th MeWhenI 🇻🇦 820 85 110ms 4 Oct 2024 260th MeWhenI 🇻🇦 820 114 470ms 7 Nov 2025 261st frosster 🇨🇦 819 97 2ms 11 Feb 2026 262nd sisyphus-ppcg 🇦🇺 818 83 10ms 2 Oct 2024 263rd Shanethegamer 🇺🇸 817 69 322ms 2 Oct 2024 264th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 265th MeWhenI 🇻🇦 817 186 15ms 2 Oct 2024 266th lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 267th Shanethegamer 🇺🇸 814 70 1,613ms 9 Apr 2025 268th GolfingSuccess 🇬🇷 814 98 18ms 5 Oct 2024 268th albanian-laundromat 🇺🇸 814 98 18ms 3 Nov 2025 270th sean-niemann 🇺🇸 813 115 361ms 24 Sep 2025 270th stefangimmillaro 813 115 671ms 6 Oct 2025 272nd stefangimmillaro 813 126 2ms 3 Oct 2024 273rd stefangimmillaro 813 134 41ms 3 Oct 2024 274th emgordon154 813 205 1,227ms 7 Mar 2025 275th jusaka 812 35 3ms 10 days ago 276th Natanaelel 🇸🇪 812 59 38ms 7 Feb 2025 277th CLOStrophobic 🇮🇹 811 119 6ms 24 Feb 2025 278th sean-niemann 🇺🇸 810 82 473ms 23 Dec 2024 279th DialFrost 🇸🇬 808 106 25ms 23 Mar 2025 280th ovs-code 🇩🇪 808 119 15ms 1 Oct 2024 281st albanian-laundromat 🇺🇸 808 120 42ms 3 Nov 2025 282nd MeWhenI 🇻🇦 807 127 2ms 5 Oct 2024 282nd albanian-laundromat 🇺🇸 807 127 3ms 3 Nov 2025 284th albanian-laundromat 🇺🇸 807 148 352ms 3 Dec 2025 285th GolfingSuccess 🇬🇷 806 31 79ms 5 Oct 2024 286th antimon2 🇯🇵 806 70 541ms 9 Oct 2024 287th trinityy-7 806 80 11ms 23 Jul 2025 288th SirBogman 🇺🇸 806 99 17ms 8 Oct 2024 288th solisolu 806 99 22ms 13 Mar 2026 288th BrunoVisnadi 🇧🇷 806 99 16ms 22 Mar 2026 291st error256 806 116 494ms 24 Sep 2025 292nd Shanethegamer 🇺🇸 806 138 142ms 3 Oct 2024 293rd Shanethegamer 🇺🇸 805 102 451ms 4 Oct 2024 294th MeWhenI 🇻🇦 804 88 1ms 2 Oct 2024 295th stefangimmillaro 804 89 479ms 4 Oct 2024 296th edsrzf 🇳🇿 804 104 405ms 21 Feb 2026 297th GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 298th anter69 🇭🇺 803 71 1,471ms 25 Feb 2026 299th sean-niemann 🇺🇸 803 92 158ms 1 Oct 2025 300th m-tkach 🇺🇦 803 138 29ms 3 Oct 2024 301st stefangimmillaro 802 87 113ms 4 Oct 2024 302nd Shanethegamer 🇺🇸 801 208 1,219ms 14 Apr 2025 302nd DialFrost 🇸🇬 801 208 1,224ms 18 Apr 2025 304th duckyluuk 🇳🇱 800 83 532ms 3 Oct 2024 304th emgordon154 800 83 420ms 18 Nov 2024 306th Shanethegamer 🇺🇸 800 128 2ms 3 Oct 2024 307th 2bular 798 49 31ms 8 Nov 2025 308th DialFrost 🇸🇬 798 85 7ms 1 Oct 2024 308th xsot 🇸🇬 798 85 5ms 7 Oct 2024 310th bzijlema 🇳🇱 798 100 19ms 10 Oct 2024 310th bricknellj 798 100 20ms 4 Mar 2025 312th MeWhenI 🇻🇦 798 109 465ms 2 Oct 2024 313th tayloia 🇬🇧 796 81 11ms 3 Oct 2024 313th targrik 796 81 11ms 8 Feb 2025 315th DialFrost 🇸🇬 796 84 2,495ms 26 Oct 2024 316th Natanaelel 🇸🇪 795 48 136ms 1 Oct 2024 317th MeWhenI 🇻🇦 795 90 488ms 2 Oct 2024 318th vang1ong7ang 795 118 156ms 17 days ago 319th MeWhenI 🇻🇦 795 122 39ms 5 Oct 2024 320th pardouin 🇫🇷 792 81 136ms 29 Jan 2025 First Prev 241–320 of 1,007 Next Last