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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 451st error256 669 101 4ms 24 Oct 2024 452nd MeWhenI 🇻🇦 669 174 39ms 13 Feb 2025 453rd CaedenHarper 🇨🇦 666 140 336ms 3 Oct 2025 454th emgordon154 665 111 4ms 12 Jan 2025 455th dbut2 🇦🇺 665 179 261ms 31 Oct 2024 456th rniii 664 106 2ms 2 Oct 2024 456th gastropner 664 106 2ms 11 Feb 2025 458th AlephSquirrel 664 146 4ms 14 May 2025 459th two-bad 🇬🇧 663 97 10ms 2 Oct 2024 459th LordSir101 663 97 8ms 10 Aug 2025 461st 4hg 🇺🇸 661 59 34ms 5 Oct 2024 462nd snoozingnewt 🇺🇸 661 180 256ms 27 days ago 463rd DialFrost 🇸🇬 659 67 2ms 22 Dec 2024 464th MeWhenI 🇻🇦 659 88 130ms 2 Oct 2024 464th Shanethegamer 🇺🇸 659 88 132ms 5 Oct 2024 466th GolfingSuccess 🇬🇷 659 98 16ms 5 Oct 2024 466th firegene 🇮🇪 659 98 16ms 21 Oct 2024 466th JunkIce 659 98 10ms 3 Dec 2024 469th error256 657 142 159ms 31 May 2025 470th BambooleanLogic 🇸🇪 656 98 10ms 21 Oct 2024 471st jwhear 🇺🇸 655 197 1,691ms 1 Oct 2024 472nd MeWhenI 🇻🇦 653 88 553ms 2 Oct 2024 473rd SirBogman 🇺🇸 652 99 16ms 8 Oct 2024 474th voytxt 🇨🇿 651 89 132ms 17 Apr 2025 474th dokutan 651 89 117ms 28 Jun 2025 476th dokutan 650 99 9ms 28 Jun 2025 477th w911 650 183 269ms 7 Oct 2024 478th rucin93 🇵🇱 648 144 151ms 28 Oct 2024 479th FlorianCassayre 🇫🇷 646 100 17ms 1 Oct 2024 479th bzijlema 🇳🇱 646 100 16ms 10 Oct 2024 479th bricknellj 646 100 16ms 4 Mar 2025 482nd MeWhenI 🇻🇦 645 91 756ms 29 Aug 2025 483rd koipondx86 645 123 2ms 8 Nov 2024 484th CaedenHarper 🇨🇦 643 100 9ms 22 Aug 2025 484th iczelia 🇩🇪 643 100 9ms 11 Oct 2025 484th Yax42 🇫🇷 643 100 18ms 2 days ago 487th Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 488th Apataras 643 145 302ms 25 Jun 2025 489th tomh1012 641 111 396ms 8 Sep 2025 490th stefangimmillaro 639 73 234ms 1 Oct 2024 491st btjones0 639 101 18ms 2 Dec 2024 492nd Jonatan6 🇩🇰 639 110 2ms 24 Oct 2024 492nd solisolu 639 110 2ms 4 days ago 494th elgan65536 639 146 156ms 2 Oct 2024 494th dokutan 639 146 328ms 6 days ago 494th luuumine 🇫🇷 639 146 148ms 3 days ago 497th MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 498th annaproxy 633 102 16ms 1 Oct 2024 498th xyangst 633 102 10ms 1 Oct 2024 500th msbranicky 633 188 250ms 7 Jan 2025 501st dokutan 632 91 382ms 19 Oct 2024 502nd Shanethegamer 🇺🇸 631 74 230ms 16 Oct 2024 503rd albanian-laundromat 631 264 541ms 27 days ago 504th robin-scragg 627 103 13ms 21 Aug 2025 505th DialFrost 🇸🇬 627 304 152ms 13 Aug 2025 506th AlephSquirrel 625 40 48ms 1 Oct 2024 507th dokutan 624 127 2ms 10 Dec 2024 508th not-a-pokemon 622 113 2ms 23 Jul 2025 509th solisolu 621 104 10ms 14 days ago 510th codereport 🇨🇦 619 63 34ms 2 Oct 2024 511th BalaM314 619 104 8ms 4 Feb 2025 511th acollett89 619 104 9ms 15 Jul 2025 513th SirBogman 🇺🇸 618 93 521ms 23 Jul 2025 514th MarcMush 🇫🇷 617 91 737ms 8 Oct 2024 515th jupj 🇫🇮 617 114 2ms 20 Jul 2025 516th Ripick 617 135 335ms 23 Mar 2025 517th fourth-bit 615 105 16ms 1 Oct 2024 517th jared-hughes 615 105 16ms 3 Oct 2024 517th mattyhempstead 615 105 27ms 7 Oct 2024 520th olleicua 🇺🇸 612 78 36ms 18 Oct 2024 521st evnu 612 147 98ms 12 Oct 2025 522nd davecame 609 106 16ms 1 Oct 2024 522nd starfihs 609 106 10ms 2 Oct 2024 522nd rschwa6308 🇺🇸 609 106 15ms 28 Oct 2024 522nd snydej 609 106 19ms 21 Nov 2024 First Prev 451–525 of 829 Next Last