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 🇸🇬 633 304 153ms 13 Aug 2025 562nd Shanethegamer 🇺🇸 632 74 319ms 16 Oct 2024 563rd Florian-Mt 632 102 10ms 5 Dec 2025 564th robin-scragg 628 103 12ms 21 Aug 2025 565th Jonatan6 🇩🇰 627 110 2ms 24 Oct 2024 566th dokutan 626 127 2ms 10 Dec 2024 567th AlephSquirrel 625 40 43ms 1 Oct 2024 568th codereport 🇨🇦 620 63 33ms 2 Oct 2024 569th MarcMush 🇫🇷 620 91 830ms 8 Oct 2024 570th SirBogman 🇺🇸 620 93 529ms 23 Jul 2025 571st BalaM314 620 104 11ms 4 Feb 2025 571st acollett89 620 104 11ms 15 Jul 2025 573rd Ripick 620 135 366ms 23 Mar 2025 574th bac0id 617 141 461ms 10 Jan 2025 575th fourth-bit 616 105 18ms 1 Oct 2024 575th jared-hughes 616 105 17ms 3 Oct 2024 575th mattyhempstead 616 105 28ms 7 Oct 2024 578th olleicua 🇺🇸 615 78 35ms 18 Oct 2024 579th evnu 615 147 87ms 12 Oct 2025 580th kaascevich 612 134 124ms 9 Jul 2025 581st Seanharrs 🇦🇺 611 117 539ms 15 Nov 2024 582nd davecame 610 106 18ms 1 Oct 2024 582nd starfihs 610 106 11ms 2 Oct 2024 582nd rschwa6308 🇺🇸 610 106 19ms 28 Oct 2024 582nd snydej 610 106 20ms 21 Nov 2024 582nd andrewjc2000 610 106 19ms 17 Jul 2025 582nd travisdoesmath 610 106 18ms 7 Sep 2025 588th not-a-pokemon 610 113 1ms 23 Jul 2025 589th Shanethegamer 🇺🇸 610 154 148ms 3 Oct 2024 590th daveberlin 608 106 9ms 27 Jun 2025 591st alemelis 606 93 479ms 1 Oct 2024 592nd jupj 🇫🇮 605 114 2ms 20 Jul 2025 593rd albanian-laundromat 🇺🇸 604 72 1ms 25 Feb 2026 594th commandz0 🇺🇸 604 107 19ms 7 Oct 2024 594th zbreit 🇺🇸 604 107 18ms 29 Oct 2024 594th StardustGogeta 604 107 17ms 30 Oct 2024 594th ZakkkkAttackkkk 🇵🇭 604 107 19ms 8 Feb 2025 594th InigoK 🇺🇸 604 107 19ms 22 Sep 2025 594th Lv0Sys 🇵🇱 604 107 19ms 22 Feb 2026 600th dokutan 602 116 2ms 19 Nov 2025 601st neihousaigaai 599 108 19ms 4 Oct 2024 601st StefanHabel 🇨🇦 599 108 20ms 23 Jan 2025 601st CaedenHarper 🇨🇦 599 108 18ms 22 Jul 2025 604th MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 605th tomh1012 597 108 11ms 12 Mar 2026 606th SirBogman 🇺🇸 596 64 152ms 11 Jul 2025 607th MeWhenI 🇻🇦 596 73 2ms 2 Oct 2024 608th arcpolaris 596 120 445ms 28 Jan 2025 609th denkyuu1 592 81 35ms 14 days ago 610th DialFrost 🇸🇬 590 67 8ms 25 Jan 2025 611th dokutan 590 98 1,200ms 14 Mar 2026 612th roguh 🇬🇹 589 117 1ms 13 Oct 2024 612th iczelia 🇩🇪 589 117 2ms 25 Sep 2025 614th dokutan 589 174 5ms 21 Feb 2025 615th JunkIce 588 98 459ms 3 Dec 2024 615th commandz0 🇺🇸 588 98 508ms 1 Sep 2025 617th cros107 🇦🇺 588 110 18ms 1 Jan 2025 617th guilhem-roy 🇫🇷 588 110 19ms 29 May 2025 619th Schmitt-Very-Cool 588 159 445ms 26 Sep 2025 620th Matter1024 🇮🇳 587 140 462ms 4 days ago 621st gigaprofisi 🇺🇸 586 110 11ms 11 Aug 2025 621st denkyuu1 586 110 11ms 11 days ago 623rd amazingalek 🇳🇴 586 122 464ms 1 Jan 2026 624th mousetail 🇳🇱 583 111 20ms 6 Oct 2024 625th CaedenHarper 🇨🇦 582 99 484ms 8 Mar 2026 626th MeWhenI 🇻🇦 582 111 89ms 2 Oct 2024 627th michelebastione 🇮🇹 582 123 597ms 26 Aug 2025 627th matanberstadt 582 123 462ms 3 days ago 629th MeWhenI 🇻🇦 581 331 15ms 2 Oct 2024 630th emgordon154 580 49 3ms 9 Dec 2025 631st bac0id 579 119 2ms 10 Jan 2025 632nd OllieBoyne 🇬🇧 577 112 19ms 17 Oct 2024 632nd WillConker 577 112 11ms 22 Oct 2024 632nd maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 635th KatieLG 🇬🇧 576 99 1,368ms 1 Oct 2024 636th 823126 576 112 11ms 13 Nov 2024 636th snoozingnewt 🇨🇦 576 112 12ms 2 Nov 2025 636th RealBen9 🇬🇧 576 112 10ms 6 days ago 639th MeWhenI 🇻🇦 572 164 205ms 6 Oct 2024 640th Mabeloid 🇳🇴 570 121 1ms 21 Oct 2025 First Prev 561–640 of 999 Next Last