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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript 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 ><> 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 ALGOL 68 APL ArkScript 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions 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 Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 561st jupj 🇫🇮 603 114 2ms 20 Jul 2025 562nd neihousaigaai 598 108 17ms 4 Oct 2024 562nd StefanHabel 🇨🇦 598 108 15ms 23 Jan 2025 562nd CaedenHarper 🇨🇦 598 108 17ms 22 Jul 2025 565th MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 566th dokutan 596 116 2ms 19 Nov 2025 567th MeWhenI 🇻🇦 595 73 2ms 2 Oct 2024 568th arcpolaris 595 120 396ms 28 Jan 2025 569th SirBogman 🇺🇸 593 64 118ms 11 Jul 2025 570th roguh 🇬🇹 588 117 1ms 13 Oct 2024 570th iczelia 🇩🇪 588 117 2ms 25 Sep 2025 572nd DialFrost 🇸🇬 587 67 8ms 25 Jan 2025 573rd JunkIce 587 98 416ms 3 Dec 2024 573rd commandz0 🇺🇸 587 98 505ms 1 Sep 2025 575th cros107 🇦🇺 587 110 18ms 1 Jan 2025 575th guilhem-roy 🇫🇷 587 110 17ms 29 May 2025 575th Lv0Sys 🇵🇱 587 110 17ms 10 Dec 2025 578th Schmitt-Very-Cool 587 159 445ms 26 Sep 2025 579th gigaprofisi 🇺🇸 585 110 9ms 11 Aug 2025 580th amazingalek 🇳🇴 585 122 458ms 1 Jan 2026 581st dokutan 584 174 5ms 21 Feb 2025 582nd mousetail 🇳🇱 582 111 17ms 6 Oct 2024 583rd michelebastione 🇮🇹 580 123 418ms 26 Aug 2025 584th emgordon154 579 49 3ms 9 Dec 2025 585th dokutan 578 102 1,094ms 30 Aug 2025 586th MeWhenI 🇻🇦 578 111 88ms 2 Oct 2024 587th bac0id 578 119 2ms 10 Jan 2025 588th OllieBoyne 🇬🇧 577 112 17ms 17 Oct 2024 588th WillConker 577 112 12ms 22 Oct 2024 588th maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 591st MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 592nd CaedenHarper 🇨🇦 575 100 517ms 22 Jul 2025 593rd 823126 575 112 9ms 13 Nov 2024 593rd snoozingnewt 🇨🇦 575 112 9ms 2 Nov 2025 595th KatieLG 🇬🇧 574 99 1,368ms 1 Oct 2024 596th MeWhenI 🇻🇦 569 164 194ms 6 Oct 2024 597th Mabeloid 🇳🇴 568 121 1ms 21 Oct 2025 598th CaedenHarper 🇨🇦 567 104 1,139ms 24 Nov 2025 599th albanian-laundromat 564 77 2ms 3 Nov 2025 600th jipsong 🇩🇪 562 115 16ms 12 May 2025 601st aliakseikalosha 562 127 487ms 10 Oct 2024 602nd jgbaldwinbrown 559 123 2ms 23 days ago 603rd ravnskjaer 🇩🇰 559 167 455ms 15 Dec 2025 604th rowechenzhong 557 116 10ms 17 Oct 2024 605th madex 🇩🇪 555 116 10ms 1 Oct 2024 606th FortuiteMan 🇫🇷 554 270 36ms 22 Nov 2025 607th MeWhenI 🇻🇦 554 290 9ms 2 Oct 2024 608th JDiLenarda 🇫🇷 553 165 1,573ms 1 Oct 2024 609th dtbao20 🇻🇳 552 117 18ms 1 Oct 2024 609th Pyroan 552 117 17ms 22 Feb 2025 609th vgamula 🇺🇦 552 117 16ms 5 Aug 2025 609th FortuiteMan 🇫🇷 552 117 17ms 1 Dec 2025 609th yujqiao 552 117 17ms 16 Dec 2025 614th snoozingnewt 🇨🇦 552 148 121ms 20 Nov 2025 615th edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 616th msbranicky 550 185 4ms 20 Jan 2025 617th gpikmddk 549 130 464ms 30 Oct 2025 618th ethanlally 549 170 377ms 19 Nov 2025 618th snoozingnewt 🇨🇦 549 170 485ms 5 Dec 2025 620th elgan65536 548 118 13ms 2 Oct 2024 620th logvp 548 118 17ms 6 Oct 2024 620th ahmetdemirag 🇨🇾 548 118 10ms 6 Feb 2025 620th dirckvdende 548 118 17ms 10 Jul 2025 624th kmathis22 546 171 350ms 19 Nov 2025 625th zakariamouhid 545 118 9ms 1 Oct 2024 626th najs91 545 131 444ms 15 Oct 2024 626th bac0id 545 131 486ms 9 Jan 2025 626th CaedenHarper 🇨🇦 545 131 407ms 17 Oct 2025 629th xyangst 545 171 176ms 1 Oct 2024 630th jtaxen 543 119 17ms 21 Oct 2024 630th psbpsbp 543 119 10ms 19 Dec 2024 630th klixel 🇨🇦 543 119 11ms 9 Apr 2025 630th vhoulbreque 🇫🇷 543 119 10ms 21 Nov 2025 634th eranws 541 119 10ms 23 Dec 2024 635th Sciman101 539 147 2ms 26 Mar 2025 636th TaserTheFox 🇺🇸 538 120 17ms 8 Oct 2024 636th yokasuretsu 538 120 11ms 26 Jan 2025 636th Troon 538 120 11ms 17 Feb 2025 639th mousetail 🇳🇱 537 128 2ms 3 Oct 2024 640th BREMAUCY 🇫🇷 534 121 24ms 18 Jul 2025 First Prev 561–640 of 872 Next Last