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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 401st dtbao20 🇻🇳 724 89 10ms 1 Oct 2024 401st madeforlosers 724 89 14ms 17 Oct 2024 401st junkondo-jp 724 89 9ms 14 Dec 2024 401st alexsave 724 89 10ms 20 Jan 2026 405th zacjl 724 110 6ms 10 Oct 2024 406th Shanethegamer 🇺🇸 724 126 1,391ms 2 Oct 2024 407th Shanethegamer 🇺🇸 723 96 2ms 3 Oct 2024 408th annaproxy 723 132 15ms 1 Oct 2024 409th MeWhenI 🇻🇦 721 78 316ms 2 Oct 2024 410th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 411th weeble 720 74 6ms 1 Jul 2025 412th nwellnhof 🇩🇪 718 90 20ms 1 Oct 2024 412th ovs-code 🇩🇪 718 90 17ms 3 Oct 2024 412th luuumine 🇫🇷 718 90 17ms 8 Oct 2025 412th firegene 🇮🇪 718 90 16ms 18 days ago 412th lukegustafson 🇺🇸 718 90 17ms 13 days ago 417th snyderek 🇺🇸 718 121 59ms 1 Oct 2024 418th ovs-code 🇩🇪 717 81 139ms 17 Apr 2025 419th JOrE20 716 90 10ms 26 days ago 420th Shanethegamer 🇺🇸 715 101 5ms 2 Oct 2024 421st ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 422nd rzv-me 713 95 5ms 5 Oct 2024 423rd DialFrost 🇸🇬 713 106 12ms 13 Dec 2024 424th h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 425th CLOStrophobic 🇮🇹 712 160 40ms 27 Feb 2025 426th 5cw 🇺🇸 710 91 16ms 1 Oct 2024 426th stefangimmillaro 710 91 16ms 13 Oct 2024 426th dokutan 710 91 10ms 19 Oct 2024 426th GrayJoKing 🇦🇺 710 91 19ms 2 Jul 2025 430th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 431st GrayJoKing 🇦🇺 708 82 139ms 1 Oct 2024 432nd DialFrost 🇸🇬 707 132 238ms 8 Apr 2025 433rd Shanethegamer 🇺🇸 706 118 376ms 2 Oct 2024 434th BlankSpruce 706 123 423ms 1 Oct 2024 435th cbrt-x 706 157 139ms 1 Oct 2024 436th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 437th janlelis 704 68 39ms 1 Oct 2024 437th tatzyr 🇯🇵 704 68 38ms 23 Dec 2024 439th MeWhenI 🇻🇦 704 115 453ms 5 Oct 2024 440th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 441st Shanethegamer 🇺🇸 703 92 16ms 3 Oct 2024 441st error256 703 92 21ms 7 Oct 2024 441st thatbirdguythatuknownot 703 92 18ms 14 Oct 2024 444th emgordon154 702 76 5ms 7 Jun 2025 445th Alex-x90 🇺🇸 701 124 412ms 1 Oct 2024 445th Herbert00709 🇵🇱 701 124 56ms 14 Jun 2025 447th mousetail 🇳🇱 701 133 169ms 3 Oct 2024 448th LukeBridges 🇬🇧 700 92 10ms 3 Oct 2024 449th albanian-laundromat 700 108 54ms 4 days ago 450th tobeannouncd 697 159 146ms 13 Dec 2024 451st emgordon154 696 134 241ms 25 Feb 2025 452nd Bulmenisaurus 695 93 17ms 6 Oct 2024 452nd lynn 695 93 16ms 8 Jan 2025 452nd RaBa21 🇭🇺 695 93 17ms 19 Jul 2025 452nd KasperKivimaeki 🇫🇮 695 93 17ms 30 Nov 2025 452nd blaztoma 🇱🇹 695 93 17ms 18 Dec 2025 457th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 458th Shanethegamer 🇺🇸 693 83 445ms 5 Oct 2024 459th xyangst 693 93 15ms 1 Oct 2024 459th Salutations45 693 93 11ms 17 Nov 2024 459th strattonwhisler 693 93 11ms 26 Mar 2025 462nd pardouin 🇫🇷 691 57 4ms 3 Oct 2024 463rd NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 464th DialFrost 🇸🇬 688 94 18ms 1 Oct 2024 465th Alex-x90 🇺🇸 688 100 2ms 1 Oct 2024 466th dokutan 687 116 7ms 19 Oct 2024 467th MeWhenI 🇻🇦 686 68 285ms 2 Oct 2024 468th ovs-code 🇩🇪 685 84 458ms 3 Oct 2024 469th XenThe 🇬🇧 685 94 10ms 7 Jul 2025 470th KatieLG 🇬🇧 684 70 36ms 2 Oct 2025 471st aDwarfNamedUrist 684 162 138ms 1 Sep 2025 472nd MeWhenI 🇻🇦 681 108 206ms 2 Oct 2024 473rd the-zammers 680 163 149ms 1 Dec 2024 474th tailorspy 679 128 432ms 4 Oct 2024 475th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 476th snoozingnewt 🇨🇦 676 95 79ms 23 Oct 2025 477th edsrzf 🇳🇿 674 99 2,281ms 5 Jul 2025 477th jkelly467 674 99 2,384ms 22 Jan 2026 479th Yax42 🇫🇷 674 129 73ms 8 Jan 2026 479th emgordon154 674 129 59ms 8 Feb 2026 First Prev 401–480 of 906 Next Last