Card Number Validation in all languages in chars. 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 Chars Time Submitted 641st dtbao20 🇻🇳 553 117 18ms 1 Oct 2024 641st Pyroan 553 117 17ms 22 Feb 2025 641st vgamula 🇺🇦 553 117 16ms 5 Aug 2025 641st FortuiteMan 🇫🇷 553 117 17ms 1 Dec 2025 641st yujqiao 553 117 17ms 16 Dec 2025 646th snoozingnewt 🇨🇦 552 148 126ms 20 Nov 2025 647th msbranicky 552 185 4ms 20 Jan 2025 648th edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 649th ethanlally 550 170 377ms 19 Nov 2025 649th snoozingnewt 🇨🇦 550 170 485ms 5 Dec 2025 649th jusaka 550 170 355ms 8 hours ago 652nd gpikmddk 549 130 417ms 30 Oct 2025 653rd JDiLenarda 🇫🇷 549 165 1,394ms 1 Oct 2024 654th KatieLG 🇬🇧 548 105 439ms 11 Feb 2026 655th elgan65536 🇺🇸 548 118 12ms 2 Oct 2024 655th logvp 548 118 17ms 6 Oct 2024 655th ahmetdemirag 🇨🇾 548 118 10ms 6 Feb 2025 655th dirckvdende 548 118 17ms 10 Jul 2025 659th Matter1024 🇮🇳 548 149 445ms 11 days ago 660th xyangst 548 171 171ms 1 Oct 2024 661st kmathis22 547 171 350ms 19 Nov 2025 662nd zakariamouhid 546 118 9ms 1 Oct 2024 663rd najs91 545 131 391ms 15 Oct 2024 663rd bac0id 545 131 422ms 9 Jan 2025 663rd CaedenHarper 🇨🇦 545 131 370ms 17 Oct 2025 666th jtaxen 543 119 17ms 21 Oct 2024 666th psbpsbp 543 119 10ms 19 Dec 2024 666th klixel 🇨🇦 543 119 10ms 9 Apr 2025 666th vhoulbreque 🇫🇷 543 119 9ms 21 Nov 2025 670th eranws 542 119 9ms 23 Dec 2024 670th ComradeSquirrel 542 119 10ms 3 days ago 672nd TaserTheFox 🇺🇸 539 120 17ms 8 Oct 2024 672nd yokasuretsu 539 120 11ms 26 Jan 2025 672nd Troon 539 120 11ms 17 Feb 2025 675th Sciman101 539 147 2ms 26 Mar 2025 676th mousetail 🇳🇱 538 128 2ms 3 Oct 2024 677th msbranicky 536 175 156ms 13 Dec 2024 678th BREMAUCY 🇫🇷 534 121 19ms 18 Jul 2025 678th retrohun 534 121 10ms 12 days ago 680th JRaspass 🇬🇧 533 74 3ms 8 days ago 681st deancureton 533 121 9ms 30 Dec 2024 682nd chartung17 530 122 10ms 24 Mar 2025 683rd msbranicky 530 126 2,655ms 9 Jan 2025 684th Protothor 528 122 10ms 23 days ago 685th msbranicky 526 123 16ms 3 Oct 2024 685th bobbysq 526 123 11ms 5 Oct 2024 685th wuzekai518 526 123 10ms 8 Oct 2024 685th denkyuu1 526 123 16ms 23 days ago 685th fuzzylojik-golf 🇺🇸 526 123 17ms 6 days ago 690th dokutan 526 131 2ms 10 Feb 2026 691st Macweese 525 178 405ms 3 Aug 2025 692nd galloj 🇨🇿 522 112 19ms 4 Oct 2024 693rd NotEvenIndian 521 124 10ms 22 Oct 2024 693rd ridingqwerty 🇺🇸 521 124 16ms 16 Jan 2025 693rd CommandLeo 🇮🇹 521 124 10ms 5 Oct 2025 696th snoozingnewt 🇨🇦 520 213 138ms 2 Nov 2025 697th bac0id 519 180 388ms 9 Jan 2025 698th bnic24 517 125 16ms 3 Oct 2024 698th adoxography 517 125 11ms 22 Oct 2024 698th lelbal 517 125 10ms 14 Oct 2025 701st sidok 516 109 248ms 13 Nov 2024 702nd dokutan 514 143 210ms 19 Oct 2024 703rd nephila-nacrea 🇬🇧 512 77 4ms 2 Oct 2024 704th emgordon154 511 156 8ms 13 Dec 2024 705th yoshykai 511 183 374ms 12 Apr 2025 706th isaiah0311 🇺🇸 510 135 2ms 9 Feb 2026 706th jusaka 510 135 2ms 8 hours ago 708th KatieLG 🇬🇧 510 140 361ms 1 Oct 2024 709th CatsAreFluffy 509 127 17ms 30 Oct 2024 709th WillowWispy 509 127 11ms 25 May 2025 711th Chinay-Domitrix 🇺🇸 509 131 2,759ms 30 Mar 2025 712th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 713th msbranicky 503 138 3ms 3 Oct 2024 714th snoozingnewt 🇨🇦 503 142 436ms 2 Nov 2025 715th madex 🇩🇪 501 129 16ms 2 Oct 2024 715th RedzGoose 🇦🇺 501 129 11ms 15 Oct 2024 715th calebaitken 501 129 10ms 11 Apr 2025 715th rollershutter 501 129 17ms 20 Nov 2025 719th blaztoma 🇱🇹 500 154 119ms 28 Nov 2025 720th MeWhenI 🇻🇦 499 149 56ms 4 Oct 2024 First Prev 641–720 of 925 Next Last