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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 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 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 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 Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 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 Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 601st najs91 544 131 343ms 15 Oct 2024 601st bac0id 544 131 370ms 9 Jan 2025 601st CaedenHarper 🇨🇦 544 131 340ms 17 Oct 2025 604th jtaxen 543 119 16ms 21 Oct 2024 604th psbpsbp 543 119 10ms 19 Dec 2024 604th klixel 🇨🇦 543 119 10ms 9 Apr 2025 604th vhoulbreque 🇫🇷 543 119 10ms 7 days ago 608th eranws 541 119 9ms 23 Dec 2024 609th Sciman101 539 147 2ms 26 Mar 2025 610th TaserTheFox 🇺🇸 538 120 20ms 8 Oct 2024 610th yokasuretsu 538 120 11ms 26 Jan 2025 610th Troon 538 120 10ms 17 Feb 2025 613th BREMAUCY 🇫🇷 534 121 16ms 18 Jul 2025 614th msbranicky 533 175 162ms 13 Dec 2024 615th deancureton 532 121 9ms 30 Dec 2024 616th chartung17 529 122 10ms 24 Mar 2025 617th msbranicky 527 126 2,869ms 9 Jan 2025 618th msbranicky 525 123 15ms 3 Oct 2024 618th bobbysq 525 123 9ms 5 Oct 2024 618th wuzekai518 525 123 9ms 8 Oct 2024 621st Macweese 524 178 308ms 3 Aug 2025 622nd galloj 🇨🇿 522 112 27ms 4 Oct 2024 623rd NotEvenIndian 521 124 10ms 22 Oct 2024 623rd ridingqwerty 🇺🇸 521 124 16ms 16 Jan 2025 623rd CommandLeo 🇮🇹 521 124 10ms 5 Oct 2025 626th blaztoma 🇱🇹 519 154 92ms 35 mins ago 627th snoozingnewt 🇺🇸 519 213 119ms 25 days ago 628th bac0id 518 180 306ms 9 Jan 2025 629th bnic24 517 125 17ms 3 Oct 2024 629th adoxography 517 125 10ms 22 Oct 2024 629th lelbal 517 125 10ms 14 Oct 2025 632nd sidok 515 109 247ms 13 Nov 2024 633rd dokutan 512 143 128ms 19 Oct 2024 634th emgordon154 511 156 8ms 13 Dec 2024 635th nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 636th yoshykai 510 183 309ms 12 Apr 2025 637th KatieLG 🇬🇧 509 140 358ms 1 Oct 2024 638th KatieLG 🇬🇧 509 146 7ms 2 Oct 2024 639th CatsAreFluffy 508 127 16ms 30 Oct 2024 639th WillowWispy 508 127 9ms 25 May 2025 641st Chinay-Domitrix 🇺🇸 507 131 2,930ms 30 Mar 2025 642nd Lv0Sys 🇵🇱 504 128 18ms 15 Jun 2025 643rd madex 🇩🇪 501 129 16ms 2 Oct 2024 643rd RedzGoose 🇦🇺 501 129 10ms 15 Oct 2024 643rd calebaitken 501 129 9ms 11 Apr 2025 643rd rollershutter 501 129 16ms 8 days ago 647th msbranicky 501 138 3ms 3 Oct 2024 648th snoozingnewt 🇺🇸 501 142 379ms 25 days ago 649th jlangvand 499 141 1ms 15 Oct 2024 649th HumanoidCPU 499 141 2ms 7 Mar 2025 651st MeWhenI 🇻🇦 499 149 42ms 4 Oct 2024 652nd janAkali 🇷🇺 499 167 335ms 8 Oct 2024 653rd Europe2048 497 130 10ms 2 Oct 2024 653rd nstearns96 🇬🇧 497 130 16ms 2 Oct 2024 653rd Stockoh 🇫🇷 497 130 16ms 4 Jul 2025 656th inverseLorentz 🇦🇺 493 131 9ms 7 Oct 2024 656th sciencejiho 493 131 16ms 11 Feb 2025 656th Jaydosu 493 131 9ms 11 Apr 2025 656th Emutis 🇱🇹 493 131 10ms 16 days ago 660th StronkCheese2 493 161 2ms 9 days ago 661st TheRealOhead 🇺🇸 491 131 9ms 1 Oct 2024 662nd HumanoidCPU 491 145 388ms 5 Oct 2024 663rd snoozingnewt 🇺🇸 488 150 135ms 25 days ago 664th snoozingnewt 🇺🇸 486 117 940ms 25 days ago 665th Mabeloid 🇳🇴 485 133 10ms 2 Oct 2024 666th h-hh-hhh 🇺🇦 485 177 58ms 2 Nov 2024 667th snoozingnewt 🇺🇸 483 249 27ms 25 days ago 668th snoozingnewt 🇺🇸 482 173 353ms 25 days ago 669th alphafalfa 480 92 2ms 8 Nov 2024 670th KatieLG 🇬🇧 479 120 585ms 1 Oct 2024 671st h-hh-hhh 🇺🇦 478 147 2ms 2 Nov 2024 672nd ravnskjaer 🇩🇰 478 195 306ms 20 Dec 2024 672nd snoozingnewt 🇺🇸 478 195 370ms 25 days ago 674th mitzal 477 180 58ms 9 Feb 2025 675th sciencedjinn 475 136 9ms 8 Nov 2024 First Prev 601–675 of 829 Next Last