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 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 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 ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 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 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 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 721st MiffOttah 476 150 446ms 6 Oct 2024 721st mwarvik 🇳🇴 476 150 439ms 1 Jan 2026 723rd sciencedjinn 475 136 10ms 8 Nov 2024 723rd jastrzumb 475 136 18ms 4 Jan 2025 723rd Florian-Mt 475 136 17ms 5 Dec 2025 726th alphafalfa 472 92 2ms 8 Nov 2024 727th kurkale6ka 472 137 22ms 16 Oct 2024 727th 4ndyJ 🇬🇧 472 137 11ms 14 Nov 2024 727th Mikey-Beep 🇬🇧 472 137 17ms 6 Aug 2025 727th wobblybits 472 137 19ms 17 Aug 2025 727th Andrey2001 472 137 9ms 1 Feb 2026 727th tomh1012 472 137 17ms 5 days ago 727th Aquateraneal 🇺🇸 472 137 17ms 35 hours ago 734th luca1339 472 198 425ms 4 Nov 2024 735th ejini6969 469 102 37ms 14 Jun 2025 736th h-hh-hhh 🇺🇦 468 147 1ms 2 Nov 2024 737th snoozingnewt 🇨🇦 466 200 240ms 2 Nov 2025 738th scpchicken 🇵🇼 465 139 17ms 6 Oct 2024 739th snoozingnewt 🇨🇦 464 121 229ms 27 Nov 2025 740th iczelia 🇩🇪 462 94 2ms 23 Sep 2025 741st NanduBC 462 140 9ms 1 Oct 2024 741st jmerle 🇳🇱 462 140 10ms 10 Jan 2025 741st RobertHoeh 462 140 11ms 3 Mar 2025 741st smilesformiles3 462 140 17ms 12 Jun 2025 741st artem-aramma 462 140 18ms 18 Jun 2025 746th Jacob385 462 202 418ms 2 Oct 2024 747th madex 🇩🇪 460 104 37ms 2 Oct 2024 747th denkyuu1 460 104 35ms 15 days ago 749th FranklinJiaChen 458 141 10ms 2 Oct 2024 750th TheZwierzLF 🇵🇱 456 105 38ms 8 Jan 2026 751st jbjd 456 151 2ms 4 Feb 2026 752nd brimstonetrader 455 142 11ms 17 Oct 2024 752nd codewrite 🇬🇧 455 142 10ms 5 May 2025 752nd RobGLambert 455 142 17ms 8 Jun 2025 752nd GodlyProgrammer1 455 142 18ms 22 Nov 2025 752nd jbjd 455 142 11ms 4 Feb 2026 757th snoozingnewt 🇨🇦 455 149 4ms 2 Nov 2025 758th IISResetMe 453 103 486ms 27 Nov 2025 759th TheZwierzLF 🇵🇱 453 127 507ms 12 Dec 2025 760th snoozingnewt 🇨🇦 452 96 2ms 2 Nov 2025 761st GeneralFabian 452 143 10ms 9 Dec 2024 761st CutSandstone 452 143 10ms 30 Jan 2025 761st kistlerf 🇨🇭 452 143 17ms 19 May 2025 764th dokutan 451 63 3ms 26 Nov 2024 765th snoozingnewt 🇨🇦 451 176 2ms 2 Nov 2025 766th hiichbindermax 449 144 17ms 2 Oct 2024 766th mathisfun271 449 144 10ms 14 Oct 2024 766th bob-th 449 144 10ms 22 Oct 2024 766th denkyuu1 449 144 16ms 15 days ago 770th Andrey2001 446 129 525ms 1 Feb 2026 771st dokutan 445 109 10ms 19 Oct 2024 772nd grey0ut 444 105 472ms 11 Jan 2025 773rd croc54 443 146 10ms 15 Dec 2024 774th Yewzir 🇧🇪 442 171 13ms 26 Dec 2024 775th MyXoToD 🇩🇪 441 146 13ms 26 May 2025 776th PyryL 🇫🇮 440 147 10ms 1 Mar 2025 777th mbittner20 437 148 10ms 13 Oct 2024 777th YAJUE114514 437 148 10ms 12 Dec 2025 779th varhammer 435 223 11ms 23 Feb 2025 780th psaban 434 149 15ms 31 Jul 2025 780th TheZwierzLF 🇵🇱 434 149 11ms 24 Nov 2025 780th RodAlc24 🇪🇸 434 149 17ms 15 days ago 783rd Mabeloid 🇳🇴 433 133 538ms 2 Oct 2024 784th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 785th dokutan 432 130 289ms 17 Oct 2024 786th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 787th snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 788th jameswmccarty 431 150 10ms 5 Oct 2024 788th yousefalizadeh 431 150 10ms 23 Oct 2024 788th feherd 431 150 11ms 31 Oct 2024 788th kadamkaustubh 431 150 10ms 8 Nov 2025 792nd adamnielson42 🇺🇸 425 152 10ms 6 Oct 2024 792nd voidgloom 425 152 10ms 22 Oct 2024 792nd omero-san 425 152 10ms 22 Sep 2025 792nd brochmann 🇸🇪 425 152 10ms 12 Oct 2025 796th JOrE20 424 136 1,020ms 7 Dec 2025 797th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 798th denisfouchard 422 153 10ms 21 Aug 2025 799th osNiko 🇧🇷 420 154 9ms 21 Aug 2025 800th celiendonze 🇨🇭 417 155 10ms 17 Oct 2025 First Prev 721–800 of 903 Next Last