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 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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 560th jared-hughes 616 105 16ms 3 Oct 2024 560th mattyhempstead 616 105 26ms 7 Oct 2024 563rd bac0id 616 141 435ms 10 Jan 2025 564th olleicua 🇺🇸 614 78 35ms 18 Oct 2024 565th evnu 612 147 87ms 12 Oct 2025 566th davecame 610 106 17ms 1 Oct 2024 566th starfihs 610 106 10ms 2 Oct 2024 566th rschwa6308 🇺🇸 610 106 16ms 28 Oct 2024 566th snydej 610 106 17ms 21 Nov 2024 566th andrewjc2000 610 106 17ms 17 Jul 2025 566th travisdoesmath 610 106 17ms 7 Sep 2025 572nd Seanharrs 🇦🇺 610 117 478ms 15 Nov 2024 573rd not-a-pokemon 609 113 1ms 23 Jul 2025 574th kaascevich 609 134 125ms 9 Jul 2025 575th daveberlin 608 106 9ms 27 Jun 2025 576th Shanethegamer 🇺🇸 607 154 156ms 3 Oct 2024 577th alemelis 605 93 467ms 1 Oct 2024 578th commandz0 🇺🇸 604 107 17ms 7 Oct 2024 578th zbreit 🇺🇸 604 107 16ms 29 Oct 2024 578th StardustGogeta 604 107 17ms 30 Oct 2024 578th ZakkkkAttackkkk 🇵🇭 604 107 16ms 8 Feb 2025 578th InigoK 🇺🇸 604 107 17ms 22 Sep 2025 578th Lv0Sys 🇵🇱 604 107 17ms 25 days ago 584th jupj 🇫🇮 604 114 2ms 20 Jul 2025 585th albanian-laundromat 603 72 1ms 22 days ago 586th neihousaigaai 598 108 17ms 4 Oct 2024 586th StefanHabel 🇨🇦 598 108 15ms 23 Jan 2025 586th CaedenHarper 🇨🇦 598 108 17ms 22 Jul 2025 589th dokutan 598 116 2ms 19 Nov 2025 590th MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 591st tomh1012 597 108 16ms 7 days ago 592nd MeWhenI 🇻🇦 595 73 2ms 2 Oct 2024 593rd arcpolaris 595 120 376ms 28 Jan 2025 594th SirBogman 🇺🇸 593 64 124ms 11 Jul 2025 595th DialFrost 🇸🇬 588 67 9ms 25 Jan 2025 596th dokutan 588 98 863ms 5 days ago 597th cros107 🇦🇺 588 110 17ms 1 Jan 2025 597th guilhem-roy 🇫🇷 588 110 17ms 29 May 2025 599th roguh 🇬🇹 588 117 1ms 13 Oct 2024 599th iczelia 🇩🇪 588 117 2ms 25 Sep 2025 601st JunkIce 587 98 416ms 3 Dec 2024 601st commandz0 🇺🇸 587 98 505ms 1 Sep 2025 603rd Schmitt-Very-Cool 587 159 445ms 26 Sep 2025 604th dokutan 587 174 5ms 21 Feb 2025 605th gigaprofisi 🇺🇸 586 110 10ms 11 Aug 2025 606th amazingalek 🇳🇴 585 122 468ms 1 Jan 2026 607th mousetail 🇳🇱 582 111 17ms 6 Oct 2024 608th CaedenHarper 🇨🇦 581 99 425ms 11 days ago 609th michelebastione 🇮🇹 580 123 431ms 26 Aug 2025 610th emgordon154 579 49 3ms 9 Dec 2025 611th MeWhenI 🇻🇦 578 111 89ms 2 Oct 2024 612th bac0id 578 119 2ms 10 Jan 2025 613th OllieBoyne 🇬🇧 577 112 17ms 17 Oct 2024 613th WillConker 577 112 12ms 22 Oct 2024 613th maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 616th MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 617th 823126 575 112 10ms 13 Nov 2024 617th snoozingnewt 🇨🇦 575 112 9ms 2 Nov 2025 619th KatieLG 🇬🇧 574 99 1,368ms 1 Oct 2024 620th MeWhenI 🇻🇦 570 164 197ms 6 Oct 2024 621st Mabeloid 🇳🇴 569 121 1ms 21 Oct 2025 622nd janAkali 🇷🇺 567 147 355ms 9 days ago 623rd jipsong 🇩🇪 562 115 16ms 12 May 2025 624th aliakseikalosha 562 127 434ms 10 Oct 2024 625th dokutan 561 155 464ms 10 Feb 2026 626th jgbaldwinbrown 560 123 2ms 14 Jan 2026 627th ravnskjaer 🇩🇰 559 167 455ms 15 Dec 2025 628th rowechenzhong 557 116 10ms 17 Oct 2024 629th madex 🇩🇪 556 116 9ms 1 Oct 2024 629th denkyuu1 556 116 11ms 4 days ago 631st CaedenHarper 🇨🇦 555 104 1,139ms 24 Nov 2025 632nd FortuiteMan 🇫🇷 554 270 40ms 22 Nov 2025 633rd MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 634th JDiLenarda 🇫🇷 553 165 1,394ms 1 Oct 2024 635th dtbao20 🇻🇳 552 117 18ms 1 Oct 2024 635th Pyroan 552 117 17ms 22 Feb 2025 635th vgamula 🇺🇦 552 117 16ms 5 Aug 2025 635th FortuiteMan 🇫🇷 552 117 17ms 1 Dec 2025 635th yujqiao 552 117 17ms 16 Dec 2025 640th snoozingnewt 🇨🇦 552 148 122ms 20 Nov 2025 First Prev 561–640 of 908 Next Last