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 720th tomh1012 465 139 19ms 25 days ago 722nd snoozingnewt 🇨🇦 464 121 229ms 27 Nov 2025 723rd iczelia 🇩🇪 462 94 2ms 23 Sep 2025 724th NanduBC 462 140 13ms 1 Oct 2024 724th jmerle 🇳🇱 462 140 14ms 10 Jan 2025 724th RobertHoeh 462 140 12ms 3 Mar 2025 724th smilesformiles3 462 140 17ms 12 Jun 2025 724th artem-aramma 462 140 18ms 18 Jun 2025 729th Jacob385 462 202 418ms 2 Oct 2024 730th madex 🇩🇪 460 104 38ms 2 Oct 2024 731st FranklinJiaChen 458 141 10ms 2 Oct 2024 732nd TheZwierzLF 🇵🇱 456 105 38ms 8 Jan 2026 733rd jbjd 456 151 3ms 7 days ago 734th brimstonetrader 455 142 11ms 17 Oct 2024 734th codewrite 🇬🇧 455 142 10ms 5 May 2025 734th RobGLambert 455 142 18ms 8 Jun 2025 734th GodlyProgrammer1 455 142 19ms 22 Nov 2025 734th jbjd 455 142 13ms 7 days ago 739th snoozingnewt 🇨🇦 455 149 4ms 2 Nov 2025 740th IISResetMe 453 103 590ms 27 Nov 2025 741st TheZwierzLF 🇵🇱 453 127 507ms 12 Dec 2025 742nd snoozingnewt 🇨🇦 452 96 2ms 2 Nov 2025 743rd GeneralFabian 452 143 11ms 9 Dec 2024 743rd CutSandstone 452 143 10ms 30 Jan 2025 743rd kistlerf 🇨🇭 452 143 19ms 19 May 2025 746th dokutan 451 63 3ms 26 Nov 2024 747th snoozingnewt 🇨🇦 451 176 2ms 2 Nov 2025 748th hiichbindermax 449 144 17ms 2 Oct 2024 748th mathisfun271 449 144 10ms 14 Oct 2024 748th bob-th 449 144 10ms 22 Oct 2024 751st Andrey2001 446 129 525ms 9 days ago 752nd Flekay 🇩🇪 446 145 10ms 10 Jul 2025 753rd dokutan 445 109 10ms 19 Oct 2024 754th grey0ut 444 105 472ms 11 Jan 2025 755th croc54 443 146 10ms 15 Dec 2024 756th varhammer 🇷🇺 443 223 11ms 23 Feb 2025 757th MyXoToD 🇩🇪 441 146 10ms 26 May 2025 758th PyryL 🇫🇮 440 147 10ms 1 Mar 2025 759th Yewzir 🇧🇪 440 171 13ms 26 Dec 2024 760th mbittner20 437 148 11ms 13 Oct 2024 760th YAJUE114514 437 148 11ms 12 Dec 2025 762nd JOrE20 434 136 1,021ms 7 Dec 2025 763rd psaban 434 149 15ms 31 Jul 2025 763rd TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 765th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 766th dokutan 432 130 289ms 17 Oct 2024 767th Mabeloid 🇳🇴 432 133 538ms 2 Oct 2024 768th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 769th snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 770th jameswmccarty 431 150 10ms 5 Oct 2024 770th yousefalizadeh 431 150 10ms 23 Oct 2024 770th feherd 431 150 14ms 31 Oct 2024 770th kadamkaustubh 431 150 10ms 8 Nov 2025 774th adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 774th voidgloom 425 152 11ms 22 Oct 2024 774th omero-san 425 152 12ms 22 Sep 2025 774th brochmann 🇸🇪 425 152 10ms 12 Oct 2025 778th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 779th denisfouchard 422 153 10ms 21 Aug 2025 780th osNiko 🇧🇷 420 154 9ms 21 Aug 2025 781st celiendonze 🇨🇭 417 155 10ms 17 Oct 2025 782nd Arkadios200 417 196 98ms 21 Oct 2025 783rd Shotokhan 414 156 10ms 21 Sep 2025 784th lhulinsky 412 157 10ms 21 Oct 2024 785th snoozingnewt 🇨🇦 411 267 28ms 18 Dec 2025 786th ThatAlo 409 158 10ms 9 Dec 2024 787th webmiche 406 159 12ms 3 Nov 2025 788th Mabeloid 🇳🇴 405 159 10ms 12 Oct 2024 789th CheeseCake628 🇳🇴 404 160 104ms 5 Nov 2024 790th snoozingnewt 🇨🇦 404 223 82ms 2 Nov 2025 791st pres-abhisheksinha 401 161 10ms 8 Oct 2024 792nd aksyristos 400 172 2ms 23 Nov 2025 793rd dieggsy 400 247 18ms 10 Oct 2024 794th ibixina 399 162 11ms 13 Oct 2024 794th TheAtrossian 399 162 11ms 5 Jan 2025 796th Ralac07 🇦🇺 397 162 12ms 3 Oct 2024 797th Maximizer02 396 201 11ms 1 Oct 2024 798th Vaekor 392 165 11ms 15 Dec 2024 799th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 800th fischfood 385 176 5ms 22 Oct 2024 First Prev 721–800 of 884 Next Last