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 commandz0 🇺🇸 604 107 19ms 7 Oct 2024 601st zbreit 🇺🇸 604 107 18ms 29 Oct 2024 601st StardustGogeta 604 107 17ms 30 Oct 2024 601st ZakkkkAttackkkk 🇵🇭 604 107 19ms 8 Feb 2025 601st InigoK 🇺🇸 604 107 19ms 22 Sep 2025 601st Lv0Sys 🇵🇱 604 107 19ms 22 Feb 2026 607th dokutan 600 116 2ms 19 Nov 2025 608th neihousaigaai 599 108 19ms 4 Oct 2024 608th StefanHabel 🇨🇦 599 108 20ms 23 Jan 2025 608th CaedenHarper 🇨🇦 599 108 18ms 22 Jul 2025 611th MeWhenI 🇻🇦 597 98 8ms 1 Oct 2024 612th tomh1012 597 108 11ms 12 Mar 2026 613th arcpolaris 597 120 433ms 28 Jan 2025 614th MeWhenI 🇻🇦 596 73 2ms 2 Oct 2024 615th SirBogman 🇺🇸 595 64 153ms 11 Jul 2025 616th DialFrost 🇸🇬 590 67 8ms 25 Jan 2025 617th roguh 🇬🇹 589 117 1ms 13 Oct 2024 617th iczelia 🇩🇪 589 117 2ms 25 Sep 2025 619th dokutan 588 98 816ms 14 Mar 2026 620th cros107 🇦🇺 588 110 18ms 1 Jan 2025 620th guilhem-roy 🇫🇷 588 110 19ms 29 May 2025 622nd amazingalek 🇳🇴 588 122 501ms 1 Jan 2026 623rd MeWhenI 🇻🇦 588 324 17ms 33 hours ago 624th JunkIce 587 98 459ms 3 Dec 2024 624th commandz0 🇺🇸 587 98 508ms 1 Sep 2025 626th Schmitt-Very-Cool 587 159 506ms 26 Sep 2025 627th dokutan 587 174 5ms 21 Feb 2025 628th gigaprofisi 🇺🇸 586 110 12ms 11 Aug 2025 628th denkyuu1 586 110 11ms 26 days ago 628th RealBen9 🇬🇧 586 110 10ms 13 days ago 631st mousetail 🇳🇱 583 111 20ms 6 Oct 2024 632nd michelebastione 🇮🇹 583 123 483ms 26 Aug 2025 632nd matanberstadt 583 123 442ms 18 days ago 634th Matter1024 🇮🇳 583 140 462ms 19 days ago 635th CaedenHarper 🇨🇦 581 99 484ms 8 Mar 2026 636th emgordon154 579 49 3ms 9 Dec 2025 637th bac0id 579 119 2ms 10 Jan 2025 638th MeWhenI 🇻🇦 578 111 91ms 2 Oct 2024 639th OllieBoyne 🇬🇧 577 112 19ms 17 Oct 2024 639th WillConker 577 112 11ms 22 Oct 2024 639th maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 642nd 823126 576 112 11ms 13 Nov 2024 642nd snoozingnewt 🇨🇦 576 112 11ms 2 Nov 2025 644th KatieLG 🇬🇧 574 99 1,394ms 1 Oct 2024 645th MeWhenI 🇻🇦 572 164 196ms 6 Oct 2024 646th Mabeloid 🇳🇴 570 121 1ms 21 Oct 2025 647th retrohun 569 126 442ms 7 hours ago 648th janAkali 🇷🇺 569 147 395ms 10 Mar 2026 649th aliakseikalosha 564 127 488ms 10 Oct 2024 650th denkyuu1 563 100 354ms 11 days ago 651st jipsong 🇩🇪 562 115 18ms 12 May 2025 652nd jgbaldwinbrown 561 123 2ms 14 Jan 2026 653rd dokutan 561 155 446ms 10 Feb 2026 654th ravnskjaer 🇩🇰 559 167 474ms 15 Dec 2025 655th rowechenzhong 558 116 17ms 17 Oct 2024 656th denkyuu1 557 71 3ms 2 days ago 657th madex 🇩🇪 556 116 10ms 1 Oct 2024 658th CaedenHarper 🇨🇦 555 104 747ms 24 Nov 2025 659th FortuiteMan 🇫🇷 554 270 44ms 22 Nov 2025 660th MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 661st dtbao20 🇻🇳 553 117 19ms 1 Oct 2024 661st Pyroan 553 117 18ms 22 Feb 2025 661st vgamula 🇺🇦 553 117 17ms 5 Aug 2025 661st FortuiteMan 🇫🇷 553 117 18ms 1 Dec 2025 661st yujqiao 553 117 25ms 16 Dec 2025 666th snoozingnewt 🇨🇦 552 148 132ms 20 Nov 2025 667th msbranicky 552 185 4ms 20 Jan 2025 668th gpikmddk 551 130 599ms 30 Oct 2025 669th edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 670th ethanlally 549 170 439ms 19 Nov 2025 670th snoozingnewt 🇨🇦 549 170 486ms 5 Dec 2025 672nd KatieLG 🇬🇧 548 105 635ms 11 Feb 2026 673rd elgan65536 🇺🇸 548 118 11ms 2 Oct 2024 673rd logvp 548 118 18ms 6 Oct 2024 673rd ahmetdemirag 🇨🇾 548 118 10ms 6 Feb 2025 673rd dirckvdende 548 118 17ms 10 Jul 2025 677th xyangst 548 171 179ms 1 Oct 2024 678th najs91 547 131 401ms 15 Oct 2024 678th bac0id 547 131 444ms 9 Jan 2025 678th CaedenHarper 🇨🇦 547 131 409ms 17 Oct 2025 681st zakariamouhid 546 118 13ms 1 Oct 2024 682nd kmathis22 546 171 424ms 19 Nov 2025 683rd JDiLenarda 🇫🇷 544 165 1,630ms 1 Oct 2024 684th jtaxen 543 119 18ms 21 Oct 2024 684th psbpsbp 543 119 9ms 19 Dec 2024 684th klixel 🇨🇦 543 119 10ms 9 Apr 2025 684th vhoulbreque 🇫🇷 543 119 16ms 21 Nov 2025 688th eranws 542 119 10ms 23 Dec 2024 689th TaserTheFox 🇺🇸 539 120 18ms 8 Oct 2024 689th yokasuretsu 539 120 11ms 26 Jan 2025 689th Troon 539 120 10ms 17 Feb 2025 689th denkyuu1 539 120 17ms 2 days ago 693rd mousetail 🇳🇱 539 128 2ms 3 Oct 2024 694th Sciman101 539 147 2ms 26 Mar 2025 695th msbranicky 536 175 161ms 13 Dec 2024 696th BREMAUCY 🇫🇷 535 121 17ms 18 Jul 2025 696th retrohun 535 121 10ms 21 Mar 2026 698th JRaspass 🇬🇧 534 74 3ms 24 Mar 2026 699th deancureton 533 121 11ms 30 Dec 2024 700th chartung17 530 122 10ms 24 Mar 2025 First Prev 601–700 of 946 Next Last