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 edsrzf 🇳🇿 827 139 37ms 20 hours ago 242nd m-tkach 🇺🇦 826 58 38ms 8 Oct 2024 243rd retrohun 824 71 9ms 10 Jan 2025 244th sean-niemann 🇺🇸 823 48 4ms 9 Aug 2025 245th MeWhenI 🇻🇦 822 92 11ms 24 Dec 2024 246th plcc0 822 97 18ms 12 Jan 2026 247th primo-ppcg 🇹🇭 822 232 525ms 13 Aug 2025 248th ovs-code 🇩🇪 821 106 437ms 1 Oct 2024 248th inventshah 821 106 456ms 1 Oct 2024 250th ovs-code 🇩🇪 820 65 5ms 30 Oct 2024 251st MeWhenI 🇻🇦 820 85 108ms 4 Oct 2024 252nd MeWhenI 🇻🇦 820 114 470ms 7 Nov 2025 253rd MeWhenI 🇻🇦 819 85 2ms 5 Oct 2024 253rd albanian-laundromat 🇺🇸 819 85 2ms 4 days ago 255th frosster 🇨🇦 819 97 2ms 11 Feb 2026 256th sisyphus-ppcg 🇦🇺 818 83 11ms 2 Oct 2024 257th GrayJoKing 🇦🇺 818 101 6ms 27 Feb 2026 258th Shanethegamer 🇺🇸 817 69 322ms 2 Oct 2024 259th MeWhenI 🇻🇦 817 104 1,025ms 2 Oct 2024 260th canissimia 🇦🇶 817 130 3ms 4 Oct 2024 261st MeWhenI 🇻🇦 817 186 15ms 2 Oct 2024 262nd lifthrasiir 🇰🇷 815 197 9ms 19 Dec 2024 263rd Shanethegamer 🇺🇸 814 70 1,296ms 9 Apr 2025 264th GolfingSuccess 🇬🇷 814 98 18ms 5 Oct 2024 264th albanian-laundromat 🇺🇸 814 98 18ms 3 Nov 2025 266th sean-niemann 🇺🇸 813 115 361ms 24 Sep 2025 266th stefangimmillaro 813 115 671ms 6 Oct 2025 268th albanian-laundromat 🇺🇸 813 118 4ms 11 Dec 2025 269th stefangimmillaro 813 126 2ms 3 Oct 2024 270th stefangimmillaro 813 134 41ms 3 Oct 2024 271st emgordon154 813 205 1,428ms 7 Mar 2025 272nd jusaka 812 35 3ms 3 days ago 273rd Natanaelel 🇸🇪 812 59 35ms 7 Feb 2025 274th CLOStrophobic 🇮🇹 811 119 6ms 24 Feb 2025 275th sean-niemann 🇺🇸 810 82 473ms 23 Dec 2024 276th MeWhenI 🇻🇦 807 127 2ms 5 Oct 2024 276th albanian-laundromat 🇺🇸 807 127 3ms 3 Nov 2025 278th albanian-laundromat 🇺🇸 807 148 352ms 3 Dec 2025 279th GolfingSuccess 🇬🇷 806 31 69ms 5 Oct 2024 280th antimon2 🇯🇵 806 70 541ms 9 Oct 2024 281st trinityy-7 806 80 14ms 23 Jul 2025 282nd SirBogman 🇺🇸 806 99 17ms 8 Oct 2024 282nd solisolu 806 99 22ms 13 Mar 2026 282nd BrunoVisnadi 🇧🇷 806 99 16ms 24 days ago 285th error256 806 116 494ms 24 Sep 2025 286th Shanethegamer 🇺🇸 805 102 451ms 4 Oct 2024 287th MeWhenI 🇻🇦 804 88 1ms 2 Oct 2024 288th stefangimmillaro 804 89 418ms 4 Oct 2024 289th edsrzf 🇳🇿 804 104 405ms 21 Feb 2026 290th JayXon 🇺🇸 804 186 1,687ms 15 hours ago 291st GrayJoKing 🇦🇺 803 58 6ms 24 Oct 2024 292nd anter69 🇭🇺 803 71 1,213ms 25 Feb 2026 293rd sean-niemann 🇺🇸 803 92 158ms 1 Oct 2025 294th m-tkach 🇺🇦 803 138 29ms 3 Oct 2024 294th Shanethegamer 🇺🇸 803 138 142ms 3 Oct 2024 296th stefangimmillaro 802 87 108ms 4 Oct 2024 297th DialFrost 🇸🇬 802 106 24ms 23 Mar 2025 298th ovs-code 🇩🇪 802 119 15ms 1 Oct 2024 299th albanian-laundromat 🇺🇸 802 120 42ms 3 Nov 2025 300th Shanethegamer 🇺🇸 801 208 1,427ms 14 Apr 2025 300th DialFrost 🇸🇬 801 208 1,589ms 18 Apr 2025 302nd duckyluuk 🇳🇱 800 83 532ms 3 Oct 2024 302nd emgordon154 800 83 420ms 18 Nov 2024 304th Shanethegamer 🇺🇸 800 128 2ms 3 Oct 2024 305th DialFrost 🇸🇬 798 85 10ms 1 Oct 2024 305th xsot 🇸🇬 798 85 5ms 7 Oct 2024 307th bzijlema 🇳🇱 798 100 19ms 10 Oct 2024 307th bricknellj 798 100 20ms 4 Mar 2025 309th MeWhenI 🇻🇦 798 109 444ms 2 Oct 2024 310th 2bular 796 49 31ms 8 Nov 2025 311th tayloia 🇬🇧 796 81 10ms 3 Oct 2024 311th targrik 796 81 9ms 8 Feb 2025 313th DialFrost 🇸🇬 796 84 2,495ms 26 Oct 2024 314th Natanaelel 🇸🇪 795 48 136ms 1 Oct 2024 315th MeWhenI 🇻🇦 795 90 421ms 2 Oct 2024 316th vang1ong7ang 795 118 151ms 10 days ago 317th Shanethegamer 🇺🇸 792 88 114ms 4 Oct 2024 318th emgordon154 791 151 340ms 17 Jan 2025 319th jared-hughes 791 203 88ms 20 Dec 2024 320th saito-ta 🇯🇵 790 74 7ms 1 Oct 2024 First Prev 241–320 of 968 Next Last