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 DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 562nd AlephSquirrel 625 40 44ms 1 Oct 2024 563rd dokutan 624 127 2ms 10 Dec 2024 564th BalaM314 620 104 11ms 4 Feb 2025 564th acollett89 620 104 9ms 15 Jul 2025 566th codereport 🇨🇦 619 63 33ms 2 Oct 2024 567th SirBogman 🇺🇸 619 93 503ms 23 Jul 2025 568th MarcMush 🇫🇷 618 91 813ms 8 Oct 2024 569th Ripick 617 135 366ms 23 Mar 2025 570th fourth-bit 616 105 17ms 1 Oct 2024 570th jared-hughes 616 105 16ms 3 Oct 2024 570th mattyhempstead 616 105 26ms 7 Oct 2024 573rd bac0id 616 141 487ms 10 Jan 2025 574th olleicua 🇺🇸 614 78 35ms 18 Oct 2024 575th evnu 612 147 87ms 12 Oct 2025 576th davecame 610 106 17ms 1 Oct 2024 576th starfihs 610 106 10ms 2 Oct 2024 576th rschwa6308 🇺🇸 610 106 16ms 28 Oct 2024 576th snydej 610 106 17ms 21 Nov 2024 576th andrewjc2000 610 106 17ms 17 Jul 2025 576th travisdoesmath 610 106 17ms 7 Sep 2025 582nd not-a-pokemon 610 113 1ms 23 Jul 2025 583rd Seanharrs 🇦🇺 610 117 478ms 15 Nov 2024 584th kaascevich 609 134 124ms 9 Jul 2025 585th Shanethegamer 🇺🇸 609 154 148ms 3 Oct 2024 586th daveberlin 608 106 10ms 27 Jun 2025 587th alemelis 605 93 467ms 1 Oct 2024 588th jupj 🇫🇮 605 114 2ms 20 Jul 2025 589th commandz0 🇺🇸 604 107 17ms 7 Oct 2024 589th zbreit 🇺🇸 604 107 16ms 29 Oct 2024 589th StardustGogeta 604 107 17ms 30 Oct 2024 589th ZakkkkAttackkkk 🇵🇭 604 107 16ms 8 Feb 2025 589th InigoK 🇺🇸 604 107 17ms 22 Sep 2025 589th Lv0Sys 🇵🇱 604 107 17ms 22 Feb 2026 595th albanian-laundromat 603 72 1ms 25 Feb 2026 596th neihousaigaai 599 108 17ms 4 Oct 2024 596th StefanHabel 🇨🇦 599 108 15ms 23 Jan 2025 596th CaedenHarper 🇨🇦 599 108 17ms 22 Jul 2025 599th dokutan 598 116 2ms 19 Nov 2025 600th MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 601st tomh1012 597 108 11ms 23 days ago 602nd MeWhenI 🇻🇦 595 73 2ms 2 Oct 2024 603rd arcpolaris 595 120 376ms 28 Jan 2025 604th SirBogman 🇺🇸 593 64 172ms 11 Jul 2025 605th denkyuu1 591 81 39ms 2 days ago 606th roguh 🇬🇹 589 117 1ms 13 Oct 2024 606th iczelia 🇩🇪 589 117 2ms 25 Sep 2025 608th DialFrost 🇸🇬 588 67 9ms 25 Jan 2025 609th JunkIce 588 98 416ms 3 Dec 2024 609th commandz0 🇺🇸 588 98 505ms 1 Sep 2025 609th dokutan 588 98 1,351ms 21 days ago 612th cros107 🇦🇺 588 110 17ms 1 Jan 2025 612th guilhem-roy 🇫🇷 588 110 17ms 29 May 2025 614th Schmitt-Very-Cool 588 159 445ms 26 Sep 2025 615th dokutan 587 174 5ms 21 Feb 2025 616th gigaprofisi 🇺🇸 586 110 10ms 11 Aug 2025 617th amazingalek 🇳🇴 585 122 468ms 1 Jan 2026 618th CaedenHarper 🇨🇦 582 99 425ms 27 days ago 619th mousetail 🇳🇱 582 111 17ms 6 Oct 2024 620th michelebastione 🇮🇹 580 123 431ms 26 Aug 2025 621st emgordon154 579 49 3ms 9 Dec 2025 622nd bac0id 579 119 2ms 10 Jan 2025 623rd MeWhenI 🇻🇦 578 111 89ms 2 Oct 2024 624th OllieBoyne 🇬🇧 577 112 17ms 17 Oct 2024 624th WillConker 577 112 12ms 22 Oct 2024 624th maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 627th 823126 576 112 10ms 13 Nov 2024 627th snoozingnewt 🇨🇦 576 112 10ms 2 Nov 2025 629th MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 630th KatieLG 🇬🇧 574 99 1,368ms 1 Oct 2024 631st MeWhenI 🇻🇦 572 164 205ms 6 Oct 2024 632nd Mabeloid 🇳🇴 570 121 1ms 21 Oct 2025 633rd janAkali 🇷🇺 567 147 355ms 25 days ago 634th jipsong 🇩🇪 562 115 16ms 12 May 2025 635th aliakseikalosha 562 127 434ms 10 Oct 2024 636th jgbaldwinbrown 561 123 2ms 14 Jan 2026 637th dokutan 561 155 441ms 10 Feb 2026 638th ravnskjaer 🇩🇰 560 167 455ms 15 Dec 2025 639th rowechenzhong 557 116 10ms 17 Oct 2024 640th madex 🇩🇪 556 116 9ms 1 Oct 2024 First Prev 561–640 of 927 Next Last