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 561st albanian-laundromat 🇺🇸 631 264 1,435ms 3 Nov 2025 562nd robin-scragg 628 103 11ms 21 Aug 2025 563rd Jonatan6 🇩🇰 627 110 2ms 24 Oct 2024 564th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 565th AlephSquirrel 625 40 43ms 1 Oct 2024 566th dokutan 624 127 2ms 10 Dec 2024 567th BalaM314 620 104 10ms 4 Feb 2025 567th acollett89 620 104 10ms 15 Jul 2025 569th codereport 🇨🇦 619 63 33ms 2 Oct 2024 570th SirBogman 🇺🇸 619 93 503ms 23 Jul 2025 571st MarcMush 🇫🇷 618 91 813ms 8 Oct 2024 572nd Ripick 617 135 366ms 23 Mar 2025 573rd fourth-bit 616 105 17ms 1 Oct 2024 573rd jared-hughes 616 105 16ms 3 Oct 2024 573rd mattyhempstead 616 105 26ms 7 Oct 2024 576th bac0id 616 141 448ms 10 Jan 2025 577th olleicua 🇺🇸 614 78 35ms 18 Oct 2024 578th evnu 612 147 87ms 12 Oct 2025 579th davecame 610 106 17ms 1 Oct 2024 579th starfihs 610 106 10ms 2 Oct 2024 579th rschwa6308 🇺🇸 610 106 16ms 28 Oct 2024 579th snydej 610 106 17ms 21 Nov 2024 579th andrewjc2000 610 106 17ms 17 Jul 2025 579th travisdoesmath 610 106 17ms 7 Sep 2025 585th not-a-pokemon 610 113 1ms 23 Jul 2025 586th Seanharrs 🇦🇺 610 117 478ms 15 Nov 2024 587th Shanethegamer 🇺🇸 610 154 148ms 3 Oct 2024 588th kaascevich 609 134 124ms 9 Jul 2025 589th daveberlin 608 106 10ms 27 Jun 2025 590th alemelis 605 93 467ms 1 Oct 2024 591st jupj 🇫🇮 605 114 2ms 20 Jul 2025 592nd commandz0 🇺🇸 604 107 17ms 7 Oct 2024 592nd zbreit 🇺🇸 604 107 16ms 29 Oct 2024 592nd StardustGogeta 604 107 17ms 30 Oct 2024 592nd ZakkkkAttackkkk 🇵🇭 604 107 16ms 8 Feb 2025 592nd InigoK 🇺🇸 604 107 17ms 22 Sep 2025 592nd Lv0Sys 🇵🇱 604 107 17ms 22 Feb 2026 598th albanian-laundromat 🇺🇸 603 72 1ms 25 Feb 2026 599th neihousaigaai 599 108 17ms 4 Oct 2024 599th StefanHabel 🇨🇦 599 108 15ms 23 Jan 2025 599th CaedenHarper 🇨🇦 599 108 17ms 22 Jul 2025 602nd dokutan 598 116 2ms 19 Nov 2025 603rd MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 604th tomh1012 597 108 11ms 26 days ago 605th SirBogman 🇺🇸 595 64 153ms 11 Jul 2025 606th MeWhenI 🇻🇦 595 73 2ms 2 Oct 2024 607th arcpolaris 595 120 376ms 28 Jan 2025 608th denkyuu1 591 81 35ms 5 days ago 609th DialFrost 🇸🇬 589 67 9ms 25 Jan 2025 610th roguh 🇬🇹 589 117 1ms 13 Oct 2024 610th iczelia 🇩🇪 589 117 2ms 25 Sep 2025 612th JunkIce 588 98 416ms 3 Dec 2024 612th commandz0 🇺🇸 588 98 505ms 1 Sep 2025 612th dokutan 588 98 1,336ms 24 days ago 615th cros107 🇦🇺 588 110 17ms 1 Jan 2025 615th guilhem-roy 🇫🇷 588 110 17ms 29 May 2025 617th Schmitt-Very-Cool 588 159 445ms 26 Sep 2025 618th dokutan 587 174 5ms 21 Feb 2025 619th gigaprofisi 🇺🇸 586 110 11ms 11 Aug 2025 619th denkyuu1 586 110 11ms 2 days ago 621st amazingalek 🇳🇴 585 122 468ms 1 Jan 2026 622nd CaedenHarper 🇨🇦 582 99 425ms 8 Mar 2026 623rd mousetail 🇳🇱 582 111 17ms 6 Oct 2024 624th michelebastione 🇮🇹 580 123 431ms 26 Aug 2025 625th emgordon154 579 49 3ms 9 Dec 2025 626th bac0id 579 119 2ms 10 Jan 2025 627th MeWhenI 🇻🇦 578 111 89ms 2 Oct 2024 628th OllieBoyne 🇬🇧 577 112 17ms 17 Oct 2024 628th WillConker 577 112 11ms 22 Oct 2024 628th maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 631st 823126 576 112 10ms 13 Nov 2024 631st snoozingnewt 🇨🇦 576 112 11ms 2 Nov 2025 633rd MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 634th KatieLG 🇬🇧 574 99 1,368ms 1 Oct 2024 635th MeWhenI 🇻🇦 572 164 205ms 6 Oct 2024 636th Mabeloid 🇳🇴 570 121 1ms 21 Oct 2025 637th janAkali 🇷🇺 567 147 355ms 10 Mar 2026 638th jipsong 🇩🇪 562 115 16ms 12 May 2025 639th aliakseikalosha 562 127 434ms 10 Oct 2024 640th jgbaldwinbrown 561 123 2ms 14 Jan 2026 First Prev 561–640 of 931 Next Last