Card Number Validation in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Maze Medal Tally 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 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript 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 Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 F# Factor Forth Fortran Gleam Go GolfScript 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 Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Maze Medal Tally 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 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 376th tobeannouncd 692 159 13 Dec 2024 377th Bulmenisaurus 691 93 6 Oct 2024 377th lynn 691 93 8 Jan 2025 379th emgordon154 690 78 2 Oct 2024 380th Alex-x90 🇺🇸 689 124 1 Oct 2024 381st xyangst 688 93 1 Oct 2024 381st Salutations45 688 93 17 Nov 2024 381st strattonwhisler 688 93 26 Mar 2025 384th MeWhenI 🇻🇦 688 174 13 Feb 2025 385th pardouin 🇫🇷 687 57 3 Oct 2024 386th Shanethegamer 🇺🇸 687 83 5 Oct 2024 387th emgordon154 687 111 12 Jan 2025 388th NickTheEASDude 🇺🇸 686 115 17 Dec 2024 389th MeWhenI 🇻🇦 684 68 2 Oct 2024 390th DialFrost 🇸🇬 684 94 1 Oct 2024 391st error256 681 104 14 Oct 2024 392nd ovs-code 🇩🇪 679 84 3 Oct 2024 393rd madex 🇩🇪 678 103 2 Oct 2024 394th plcc0 676 37 6 Apr 2025 395th the-zammers 675 163 1 Dec 2024 396th Shanethegamer 🇺🇸 674 65 1 Oct 2024 397th BlankSpruce 672 104 1 Oct 2024 398th aDwarfNamedUrist 671 164 16 Oct 2024 399th snoozingnewt 🇺🇸 670 96 31 Mar 2025 400th error256 668 101 24 Oct 2024 401st tailorspy 668 128 4 Oct 2024 402nd HumanoidCPU 667 96 7 Mar 2025 403rd jwhear 🇺🇸 666 197 1 Oct 2024 404th two-bad 🇬🇧 660 97 2 Oct 2024 405th rniii 659 106 2 Oct 2024 405th gastropner 659 106 11 Feb 2025 407th 4hg 🇺🇸 657 59 5 Oct 2024 408th MeWhenI 🇻🇦 657 88 2 Oct 2024 408th Shanethegamer 🇺🇸 657 88 5 Oct 2024 410th MeWhenI 🇻🇦 656 98 1 Oct 2024 410th GolfingSuccess 🇬🇷 656 98 5 Oct 2024 410th firegene 🇮🇪 656 98 21 Oct 2024 410th JunkIce 656 98 3 Dec 2024 414th dbut2 🇦🇺 656 179 31 Oct 2024 415th Ripick 655 135 23 Mar 2025 416th rucin93 🇵🇱 654 144 28 Oct 2024 417th DialFrost 🇸🇬 653 67 22 Dec 2024 418th BambooleanLogic 🇸🇪 653 98 21 Oct 2024 419th RyanMHsiao 652 201 1 Oct 2024 420th voytxt 🇨🇿 650 89 20 days ago 421st SirBogman 🇺🇸 650 99 8 Oct 2024 422nd MeWhenI 🇻🇦 648 88 2 Oct 2024 423rd elgan65536 645 146 2 Oct 2024 424th bac0id 644 180 9 Jan 2025 425th FlorianCassayre 🇫🇷 643 100 1 Oct 2024 425th bzijlema 643 100 10 Oct 2024 425th bricknellj 643 100 4 Mar 2025 428th w911 642 183 7 Oct 2024 429th Antibrain0 641 123 8 Nov 2024 430th stefangimmillaro 638 73 1 Oct 2024 431st btjones0 637 101 2 Dec 2024 432nd Jonatan6 🇩🇰 635 110 24 Oct 2024 433rd CaedenHarper 🇨🇦 635 185 3 Jan 2025 434th yoshykai 633 183 24 days ago 435th annaproxy 630 102 1 Oct 2024 435th xyangst 630 102 1 Oct 2024 437th Shanethegamer 🇺🇸 629 74 16 Oct 2024 438th dokutan 627 91 19 Oct 2024 439th AlephSquirrel 625 40 1 Oct 2024 440th msbranicky 625 188 7 Jan 2025 441st ryyyn 624 103 8 Jan 2025 442nd tomh1012 621 114 17 Oct 2024 443rd dokutan 621 127 10 Dec 2024 444th DialFrost 🇸🇬 621 307 14 days ago 445th codereport 🇨🇦 615 63 2 Oct 2024 446th MarcMush 🇫🇷 615 91 8 Oct 2024 447th BalaM314 615 104 4 Feb 2025 448th Schmitt-Very-Cool 613 189 3 Feb 2025 449th fourth-bit 612 105 1 Oct 2024 449th 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