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 annaproxy 634 102 18ms 1 Oct 2024 561st xyangst 634 102 10ms 1 Oct 2024 561st aksyristos 634 102 19ms 21 days ago 561st scpchicken 🇵🇼 634 102 17ms 10 days ago 565th DialFrost 🇸🇬 633 304 153ms 13 Aug 2025 566th Shanethegamer 🇺🇸 632 74 319ms 16 Oct 2024 567th Florian-Mt 632 102 10ms 5 Dec 2025 568th robin-scragg 628 103 12ms 21 Aug 2025 569th Jonatan6 🇩🇰 627 110 2ms 24 Oct 2024 570th dokutan 626 127 2ms 10 Dec 2024 571st AlephSquirrel 625 40 48ms 1 Oct 2024 572nd codereport 🇨🇦 620 63 33ms 2 Oct 2024 573rd MarcMush 🇫🇷 620 91 830ms 8 Oct 2024 574th BalaM314 620 104 11ms 4 Feb 2025 574th acollett89 620 104 11ms 15 Jul 2025 576th Ripick 620 135 366ms 23 Mar 2025 577th SirBogman 🇺🇸 619 93 529ms 23 Jul 2025 578th bac0id 617 141 426ms 10 Jan 2025 579th fourth-bit 616 105 18ms 1 Oct 2024 579th jared-hughes 616 105 17ms 3 Oct 2024 579th mattyhempstead 616 105 28ms 7 Oct 2024 582nd olleicua 🇺🇸 615 78 40ms 18 Oct 2024 583rd evnu 615 147 87ms 12 Oct 2025 584th kaascevich 612 134 126ms 9 Jul 2025 585th Seanharrs 🇦🇺 611 117 539ms 15 Nov 2024 586th davecame 610 106 18ms 1 Oct 2024 586th starfihs 610 106 11ms 2 Oct 2024 586th rschwa6308 🇺🇸 610 106 19ms 28 Oct 2024 586th snydej 610 106 20ms 21 Nov 2024 586th andrewjc2000 610 106 19ms 17 Jul 2025 586th travisdoesmath 610 106 18ms 7 Sep 2025 592nd not-a-pokemon 610 113 1ms 23 Jul 2025 593rd Shanethegamer 🇺🇸 610 154 153ms 3 Oct 2024 594th daveberlin 608 106 9ms 27 Jun 2025 595th albanian-laundromat 🇺🇸 606 72 1ms 25 Feb 2026 596th alemelis 606 93 479ms 1 Oct 2024 597th jupj 🇫🇮 605 114 2ms 20 Jul 2025 598th commandz0 🇺🇸 604 107 19ms 7 Oct 2024 598th zbreit 🇺🇸 604 107 18ms 29 Oct 2024 598th StardustGogeta 604 107 17ms 30 Oct 2024 598th ZakkkkAttackkkk 🇵🇭 604 107 19ms 8 Feb 2025 598th InigoK 🇺🇸 604 107 19ms 22 Sep 2025 598th Lv0Sys 🇵🇱 604 107 19ms 22 Feb 2026 604th dokutan 602 116 2ms 19 Nov 2025 605th neihousaigaai 599 108 19ms 4 Oct 2024 605th StefanHabel 🇨🇦 599 108 20ms 23 Jan 2025 605th CaedenHarper 🇨🇦 599 108 18ms 22 Jul 2025 608th MeWhenI 🇻🇦 597 73 2ms 2 Oct 2024 609th MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 610th tomh1012 597 108 11ms 12 Mar 2026 611th SirBogman 🇺🇸 596 64 152ms 11 Jul 2025 612th arcpolaris 596 120 445ms 28 Jan 2025 613th DialFrost 🇸🇬 590 67 8ms 25 Jan 2025 614th dokutan 590 98 1,200ms 14 Mar 2026 615th roguh 🇬🇹 589 117 1ms 13 Oct 2024 615th iczelia 🇩🇪 589 117 2ms 25 Sep 2025 617th dokutan 589 174 5ms 21 Feb 2025 618th JunkIce 588 98 459ms 3 Dec 2024 618th commandz0 🇺🇸 588 98 508ms 1 Sep 2025 620th cros107 🇦🇺 588 110 18ms 1 Jan 2025 620th guilhem-roy 🇫🇷 588 110 19ms 29 May 2025 622nd Schmitt-Very-Cool 588 159 445ms 26 Sep 2025 623rd Matter1024 🇮🇳 587 140 462ms 10 days ago 624th gigaprofisi 🇺🇸 586 110 11ms 11 Aug 2025 624th denkyuu1 586 110 11ms 17 days ago 624th RealBen9 🇬🇧 586 110 10ms 5 days ago 627th amazingalek 🇳🇴 586 122 464ms 1 Jan 2026 628th mousetail 🇳🇱 583 111 20ms 6 Oct 2024 629th CaedenHarper 🇨🇦 582 99 484ms 8 Mar 2026 630th MeWhenI 🇻🇦 582 111 89ms 2 Oct 2024 631st michelebastione 🇮🇹 582 123 597ms 26 Aug 2025 631st matanberstadt 582 123 462ms 9 days ago 633rd MeWhenI 🇻🇦 581 331 15ms 2 Oct 2024 634th emgordon154 580 49 3ms 9 Dec 2025 635th bac0id 579 119 2ms 10 Jan 2025 636th OllieBoyne 🇬🇧 577 112 19ms 17 Oct 2024 636th WillConker 577 112 11ms 22 Oct 2024 636th maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 639th KatieLG 🇬🇧 576 99 1,664ms 1 Oct 2024 640th 823126 576 112 11ms 13 Nov 2024 First Prev 561–640 of 1,002 Next Last