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) Taxicab Numbers 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic 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) Taxicab Numbers 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 601st albanian-laundromat 🇺🇸 604 72 1ms 25 Feb 2026 602nd commandz0 🇺🇸 604 107 19ms 7 Oct 2024 602nd zbreit 🇺🇸 604 107 18ms 29 Oct 2024 602nd StardustGogeta 604 107 17ms 30 Oct 2024 602nd ZakkkkAttackkkk 🇵🇭 604 107 19ms 8 Feb 2025 602nd InigoK 🇺🇸 604 107 19ms 22 Sep 2025 602nd Lv0Sys 🇵🇱 604 107 19ms 22 Feb 2026 608th dokutan 600 116 2ms 19 Nov 2025 609th neihousaigaai 599 108 19ms 4 Oct 2024 609th StefanHabel 🇨🇦 599 108 20ms 23 Jan 2025 609th CaedenHarper 🇨🇦 599 108 18ms 22 Jul 2025 612th MeWhenI 🇻🇦 597 98 8ms 1 Oct 2024 613th tomh1012 597 108 11ms 12 Mar 2026 614th arcpolaris 597 120 433ms 28 Jan 2025 615th MeWhenI 🇻🇦 596 73 2ms 2 Oct 2024 616th SirBogman 🇺🇸 595 64 153ms 11 Jul 2025 617th DialFrost 🇸🇬 590 67 8ms 25 Jan 2025 618th roguh 🇬🇹 589 117 1ms 13 Oct 2024 618th iczelia 🇩🇪 589 117 2ms 25 Sep 2025 620th dokutan 588 98 816ms 14 Mar 2026 621st cros107 🇦🇺 588 110 18ms 1 Jan 2025 621st guilhem-roy 🇫🇷 588 110 19ms 29 May 2025 623rd amazingalek 🇳🇴 588 122 501ms 1 Jan 2026 624th MeWhenI 🇻🇦 588 324 17ms 39 hours ago 625th JunkIce 587 98 459ms 3 Dec 2024 625th commandz0 🇺🇸 587 98 508ms 1 Sep 2025 627th Schmitt-Very-Cool 587 159 506ms 26 Sep 2025 628th dokutan 587 174 5ms 21 Feb 2025 629th gigaprofisi 🇺🇸 586 110 12ms 11 Aug 2025 629th denkyuu1 586 110 11ms 26 days ago 629th RealBen9 🇬🇧 586 110 10ms 14 days ago 632nd mousetail 🇳🇱 583 111 20ms 6 Oct 2024 633rd michelebastione 🇮🇹 583 123 483ms 26 Aug 2025 633rd matanberstadt 583 123 442ms 18 days ago 635th Matter1024 🇮🇳 583 140 462ms 19 days ago 636th CaedenHarper 🇨🇦 581 99 484ms 8 Mar 2026 637th emgordon154 579 49 3ms 9 Dec 2025 638th bac0id 579 119 2ms 10 Jan 2025 639th MeWhenI 🇻🇦 578 111 91ms 2 Oct 2024 640th OllieBoyne 🇬🇧 577 112 19ms 17 Oct 2024 640th WillConker 577 112 11ms 22 Oct 2024 640th maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 643rd 823126 576 112 11ms 13 Nov 2024 643rd snoozingnewt 🇨🇦 576 112 11ms 2 Nov 2025 645th KatieLG 🇬🇧 574 99 1,394ms 1 Oct 2024 646th MeWhenI 🇻🇦 572 164 196ms 6 Oct 2024 647th Mabeloid 🇳🇴 570 121 1ms 21 Oct 2025 648th retrohun 569 126 442ms 13 hours ago 649th janAkali 🇷🇺 569 147 395ms 10 Mar 2026 650th aliakseikalosha 564 127 488ms 10 Oct 2024 651st denkyuu1 563 100 354ms 11 days ago 652nd jipsong 🇩🇪 562 115 18ms 12 May 2025 653rd jgbaldwinbrown 561 123 2ms 14 Jan 2026 654th dokutan 561 155 446ms 10 Feb 2026 655th ravnskjaer 🇩🇰 559 167 474ms 15 Dec 2025 656th rowechenzhong 558 116 17ms 17 Oct 2024 657th denkyuu1 557 71 3ms 2 days ago 658th madex 🇩🇪 556 116 10ms 1 Oct 2024 659th CaedenHarper 🇨🇦 555 104 747ms 24 Nov 2025 660th FortuiteMan 🇫🇷 554 270 44ms 22 Nov 2025 661st MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 662nd dtbao20 🇻🇳 553 117 19ms 1 Oct 2024 662nd Pyroan 553 117 18ms 22 Feb 2025 662nd vgamula 🇺🇦 553 117 17ms 5 Aug 2025 662nd FortuiteMan 🇫🇷 553 117 18ms 1 Dec 2025 662nd yujqiao 553 117 25ms 16 Dec 2025 667th snoozingnewt 🇨🇦 552 148 132ms 20 Nov 2025 668th msbranicky 552 185 4ms 20 Jan 2025 669th gpikmddk 551 130 599ms 30 Oct 2025 670th edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 671st ethanlally 549 170 439ms 19 Nov 2025 671st snoozingnewt 🇨🇦 549 170 486ms 5 Dec 2025 673rd KatieLG 🇬🇧 548 105 635ms 11 Feb 2026 674th elgan65536 🇺🇸 548 118 11ms 2 Oct 2024 674th logvp 548 118 18ms 6 Oct 2024 674th ahmetdemirag 🇨🇾 548 118 10ms 6 Feb 2025 674th dirckvdende 548 118 17ms 10 Jul 2025 678th xyangst 548 171 179ms 1 Oct 2024 679th zakariamouhid 547 118 13ms 1 Oct 2024 680th najs91 547 131 401ms 15 Oct 2024 680th bac0id 547 131 444ms 9 Jan 2025 680th CaedenHarper 🇨🇦 547 131 409ms 17 Oct 2025 683rd kmathis22 546 171 424ms 19 Nov 2025 684th JDiLenarda 🇫🇷 544 165 1,630ms 1 Oct 2024 685th jtaxen 543 119 18ms 21 Oct 2024 685th psbpsbp 543 119 9ms 19 Dec 2024 685th klixel 🇨🇦 543 119 10ms 9 Apr 2025 685th vhoulbreque 🇫🇷 543 119 16ms 21 Nov 2025 689th eranws 542 119 10ms 23 Dec 2024 690th TaserTheFox 🇺🇸 539 120 18ms 8 Oct 2024 690th yokasuretsu 539 120 11ms 26 Jan 2025 690th Troon 539 120 10ms 17 Feb 2025 690th denkyuu1 539 120 17ms 2 days ago 694th mousetail 🇳🇱 539 128 2ms 3 Oct 2024 695th Sciman101 539 147 2ms 26 Mar 2025 696th msbranicky 536 175 161ms 13 Dec 2024 697th BREMAUCY 🇫🇷 535 121 17ms 18 Jul 2025 697th retrohun 535 121 10ms 21 Mar 2026 699th JRaspass 🇬🇧 534 74 3ms 24 Mar 2026 700th deancureton 533 121 11ms 30 Dec 2024 First Prev 601–700 of 947 Next Last