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 560th acollett89 620 104 9ms 15 Jul 2025 562nd codereport 🇨🇦 619 63 33ms 2 Oct 2024 563rd SirBogman 🇺🇸 619 93 503ms 23 Jul 2025 564th MarcMush 🇫🇷 618 91 813ms 8 Oct 2024 565th Ripick 617 135 366ms 23 Mar 2025 566th fourth-bit 616 105 17ms 1 Oct 2024 566th jared-hughes 616 105 16ms 3 Oct 2024 566th mattyhempstead 616 105 26ms 7 Oct 2024 569th bac0id 616 141 487ms 10 Jan 2025 570th olleicua 🇺🇸 614 78 35ms 18 Oct 2024 571st evnu 612 147 87ms 12 Oct 2025 572nd davecame 610 106 17ms 1 Oct 2024 572nd starfihs 610 106 10ms 2 Oct 2024 572nd rschwa6308 🇺🇸 610 106 16ms 28 Oct 2024 572nd snydej 610 106 17ms 21 Nov 2024 572nd andrewjc2000 610 106 17ms 17 Jul 2025 572nd travisdoesmath 610 106 17ms 7 Sep 2025 578th not-a-pokemon 610 113 1ms 23 Jul 2025 579th Seanharrs 🇦🇺 610 117 478ms 15 Nov 2024 580th kaascevich 609 134 124ms 9 Jul 2025 581st Shanethegamer 🇺🇸 609 154 148ms 3 Oct 2024 582nd daveberlin 608 106 10ms 27 Jun 2025 583rd alemelis 605 93 467ms 1 Oct 2024 584th jupj 🇫🇮 605 114 2ms 20 Jul 2025 585th commandz0 🇺🇸 604 107 17ms 7 Oct 2024 585th zbreit 🇺🇸 604 107 16ms 29 Oct 2024 585th StardustGogeta 604 107 17ms 30 Oct 2024 585th ZakkkkAttackkkk 🇵🇭 604 107 16ms 8 Feb 2025 585th InigoK 🇺🇸 604 107 17ms 22 Sep 2025 585th Lv0Sys 🇵🇱 604 107 17ms 22 Feb 2026 591st albanian-laundromat 603 72 1ms 25 Feb 2026 592nd neihousaigaai 599 108 17ms 4 Oct 2024 592nd StefanHabel 🇨🇦 599 108 15ms 23 Jan 2025 592nd CaedenHarper 🇨🇦 599 108 17ms 22 Jul 2025 595th dokutan 598 116 2ms 19 Nov 2025 596th MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 597th tomh1012 597 108 11ms 21 days ago 598th MeWhenI 🇻🇦 595 73 2ms 2 Oct 2024 599th arcpolaris 595 120 376ms 28 Jan 2025 600th SirBogman 🇺🇸 593 64 172ms 11 Jul 2025 601st denkyuu1 591 81 39ms 104 mins ago 602nd roguh 🇬🇹 589 117 1ms 13 Oct 2024 602nd iczelia 🇩🇪 589 117 2ms 25 Sep 2025 604th DialFrost 🇸🇬 588 67 9ms 25 Jan 2025 605th JunkIce 588 98 416ms 3 Dec 2024 605th commandz0 🇺🇸 588 98 505ms 1 Sep 2025 605th dokutan 588 98 1,351ms 19 days ago 608th cros107 🇦🇺 588 110 17ms 1 Jan 2025 608th guilhem-roy 🇫🇷 588 110 17ms 29 May 2025 610th Schmitt-Very-Cool 588 159 445ms 26 Sep 2025 611th dokutan 587 174 5ms 21 Feb 2025 612th gigaprofisi 🇺🇸 586 110 10ms 11 Aug 2025 613th amazingalek 🇳🇴 585 122 468ms 1 Jan 2026 614th CaedenHarper 🇨🇦 582 99 425ms 24 days ago 615th mousetail 🇳🇱 582 111 17ms 6 Oct 2024 616th michelebastione 🇮🇹 580 123 431ms 26 Aug 2025 617th emgordon154 579 49 3ms 9 Dec 2025 618th bac0id 579 119 2ms 10 Jan 2025 619th MeWhenI 🇻🇦 578 111 89ms 2 Oct 2024 620th OllieBoyne 🇬🇧 577 112 17ms 17 Oct 2024 620th WillConker 577 112 12ms 22 Oct 2024 620th maxgodfrey2004 🇨🇦 577 112 10ms 4 Jan 2025 623rd 823126 576 112 10ms 13 Nov 2024 623rd snoozingnewt 🇨🇦 576 112 10ms 2 Nov 2025 625th MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 626th KatieLG 🇬🇧 574 99 1,368ms 1 Oct 2024 627th MeWhenI 🇻🇦 572 164 205ms 6 Oct 2024 628th Mabeloid 🇳🇴 570 121 1ms 21 Oct 2025 629th janAkali 🇷🇺 567 147 355ms 23 days ago 630th jipsong 🇩🇪 562 115 16ms 12 May 2025 631st aliakseikalosha 562 127 434ms 10 Oct 2024 632nd dokutan 561 155 441ms 10 Feb 2026 633rd jgbaldwinbrown 560 123 2ms 14 Jan 2026 634th ravnskjaer 🇩🇰 560 167 455ms 15 Dec 2025 635th rowechenzhong 557 116 10ms 17 Oct 2024 636th madex 🇩🇪 556 116 9ms 1 Oct 2024 636th denkyuu1 556 116 11ms 18 days ago 638th CaedenHarper 🇨🇦 555 104 1,364ms 24 Nov 2025 639th FortuiteMan 🇫🇷 554 270 40ms 22 Nov 2025 640th MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 First Prev 561–640 of 925 Next Last