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 ravnskjaer 🇩🇰 560 167 455ms 15 Dec 2025 642nd rowechenzhong 557 116 10ms 17 Oct 2024 643rd madex 🇩🇪 556 116 9ms 1 Oct 2024 644th CaedenHarper 🇨🇦 555 104 1,364ms 24 Nov 2025 645th FortuiteMan 🇫🇷 554 270 40ms 22 Nov 2025 646th MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 647th dtbao20 🇻🇳 553 117 18ms 1 Oct 2024 647th Pyroan 553 117 17ms 22 Feb 2025 647th vgamula 🇺🇦 553 117 16ms 5 Aug 2025 647th FortuiteMan 🇫🇷 553 117 17ms 1 Dec 2025 647th yujqiao 553 117 17ms 16 Dec 2025 652nd snoozingnewt 🇨🇦 552 148 126ms 20 Nov 2025 653rd msbranicky 552 185 4ms 20 Jan 2025 654th edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 655th ethanlally 550 170 377ms 19 Nov 2025 655th snoozingnewt 🇨🇦 550 170 485ms 5 Dec 2025 655th jusaka 550 170 355ms 3 days ago 658th gpikmddk 549 130 417ms 30 Oct 2025 659th JDiLenarda 🇫🇷 549 165 1,394ms 1 Oct 2024 660th xyangst 549 171 171ms 1 Oct 2024 661st KatieLG 🇬🇧 548 105 439ms 11 Feb 2026 662nd elgan65536 🇺🇸 548 118 12ms 2 Oct 2024 662nd logvp 548 118 17ms 6 Oct 2024 662nd ahmetdemirag 🇨🇾 548 118 10ms 6 Feb 2025 662nd dirckvdende 548 118 17ms 10 Jul 2025 666th Matter1024 🇮🇳 548 149 445ms 14 days ago 667th kmathis22 547 171 350ms 19 Nov 2025 668th zakariamouhid 546 118 9ms 1 Oct 2024 669th najs91 545 131 391ms 15 Oct 2024 669th bac0id 545 131 422ms 9 Jan 2025 669th CaedenHarper 🇨🇦 545 131 370ms 17 Oct 2025 672nd jtaxen 543 119 17ms 21 Oct 2024 672nd psbpsbp 543 119 10ms 19 Dec 2024 672nd klixel 🇨🇦 543 119 10ms 9 Apr 2025 672nd vhoulbreque 🇫🇷 543 119 9ms 21 Nov 2025 676th eranws 542 119 9ms 23 Dec 2024 676th ComradeSquirrel 542 119 10ms 6 days ago 678th TaserTheFox 🇺🇸 539 120 17ms 8 Oct 2024 678th yokasuretsu 539 120 11ms 26 Jan 2025 678th Troon 539 120 11ms 17 Feb 2025 681st mousetail 🇳🇱 539 128 2ms 3 Oct 2024 682nd Sciman101 539 147 2ms 26 Mar 2025 683rd msbranicky 536 175 156ms 13 Dec 2024 684th BREMAUCY 🇫🇷 534 121 19ms 18 Jul 2025 684th retrohun 534 121 10ms 15 days ago 686th JRaspass 🇬🇧 533 74 3ms 12 days ago 687th deancureton 533 121 9ms 30 Dec 2024 688th chartung17 530 122 10ms 24 Mar 2025 689th msbranicky 530 126 2,655ms 9 Jan 2025 690th Protothor 528 122 10ms 26 days ago 691st msbranicky 526 123 16ms 3 Oct 2024 691st bobbysq 526 123 11ms 5 Oct 2024 691st wuzekai518 526 123 10ms 8 Oct 2024 691st denkyuu1 526 123 16ms 26 days ago 691st fuzzylojik-golf 🇺🇸 526 123 17ms 9 days ago 696th dokutan 526 131 2ms 10 Feb 2026 697th Macweese 525 178 405ms 3 Aug 2025 698th galloj 🇨🇿 522 112 19ms 4 Oct 2024 699th NotEvenIndian 521 124 10ms 22 Oct 2024 699th ridingqwerty 🇺🇸 521 124 16ms 16 Jan 2025 699th CommandLeo 🇮🇹 521 124 10ms 5 Oct 2025 702nd snoozingnewt 🇨🇦 520 213 138ms 2 Nov 2025 703rd bac0id 519 180 388ms 9 Jan 2025 704th bnic24 517 125 16ms 3 Oct 2024 704th adoxography 517 125 11ms 22 Oct 2024 704th lelbal 517 125 10ms 14 Oct 2025 707th sidok 516 109 248ms 13 Nov 2024 708th dokutan 514 143 210ms 19 Oct 2024 709th nephila-nacrea 🇬🇧 513 77 4ms 2 Oct 2024 710th isaiah0311 🇺🇸 511 135 2ms 9 Feb 2026 710th jusaka 511 135 2ms 3 days ago 712th emgordon154 511 156 8ms 13 Dec 2024 713th yoshykai 511 183 374ms 12 Apr 2025 714th KatieLG 🇬🇧 510 140 361ms 1 Oct 2024 715th CatsAreFluffy 509 127 17ms 30 Oct 2024 715th WillowWispy 509 127 11ms 25 May 2025 717th Chinay-Domitrix 🇺🇸 509 131 2,759ms 30 Mar 2025 718th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 719th msbranicky 503 138 3ms 3 Oct 2024 720th snoozingnewt 🇨🇦 503 142 436ms 2 Nov 2025 First Prev 641–720 of 930 Next Last