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 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 Apéry’s Constant Binary Lambda Calculus 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 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 ><> 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 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 ><> 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 402nd nwellnhof 🇩🇪 718 90 20ms 1 Oct 2024 402nd ovs-code 🇩🇪 718 90 17ms 3 Oct 2024 402nd luuumine 🇫🇷 718 90 17ms 8 Oct 2025 402nd JOrE20 718 90 17ms 1 Dec 2025 402nd Steffan153 🇫🇮 718 90 20ms 6 days ago 407th snyderek 🇺🇸 718 121 53ms 1 Oct 2024 408th ovs-code 🇩🇪 716 81 126ms 17 Apr 2025 409th JOrE20 715 90 9ms 5 days ago 410th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 411th rzv-me 713 95 5ms 5 Oct 2024 412th h3ra993huskp 🇯🇵 713 131 422ms 30 Nov 2025 413th 5cw 🇺🇸 710 91 17ms 1 Oct 2024 413th stefangimmillaro 710 91 16ms 13 Oct 2024 413th dokutan 710 91 10ms 19 Oct 2024 413th GrayJoKing 🇦🇺 710 91 19ms 2 Jul 2025 417th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 418th DialFrost 🇸🇬 709 106 12ms 13 Dec 2024 419th GrayJoKing 🇦🇺 707 82 134ms 1 Oct 2024 420th DialFrost 🇸🇬 707 132 224ms 8 Apr 2025 421st Shanethegamer 🇺🇸 706 118 357ms 2 Oct 2024 422nd BlankSpruce 706 123 408ms 1 Oct 2024 423rd cbrt-x 706 157 139ms 1 Oct 2024 424th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 425th MeWhenI 🇻🇦 704 115 453ms 5 Oct 2024 426th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 427th janlelis 703 68 41ms 1 Oct 2024 427th tatzyr 🇯🇵 703 68 40ms 23 Dec 2024 429th emgordon154 702 76 5ms 7 Jun 2025 430th Shanethegamer 🇺🇸 702 92 16ms 3 Oct 2024 430th error256 702 92 21ms 7 Oct 2024 430th thatbirdguythatuknownot 702 92 18ms 14 Oct 2024 433rd Alex-x90 🇺🇸 701 124 406ms 1 Oct 2024 433rd Herbert00709 🇵🇱 701 124 56ms 14 Jun 2025 435th mousetail 🇳🇱 701 133 149ms 3 Oct 2024 436th LukeBridges 🇬🇧 700 92 10ms 3 Oct 2024 437th tobeannouncd 697 159 146ms 13 Dec 2024 438th emgordon154 696 134 216ms 25 Feb 2025 439th Bulmenisaurus 695 93 17ms 6 Oct 2024 439th lynn 695 93 16ms 8 Jan 2025 439th RaBa21 🇭🇺 695 93 17ms 19 Jul 2025 439th KasperKivimaeki 🇫🇮 695 93 19ms 30 Nov 2025 439th blaztoma 🇱🇹 695 93 18ms 18 Dec 2025 444th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 445th Shanethegamer 🇺🇸 693 83 445ms 5 Oct 2024 446th xyangst 692 93 10ms 1 Oct 2024 446th Salutations45 692 93 10ms 17 Nov 2024 446th strattonwhisler 692 93 16ms 26 Mar 2025 449th pardouin 🇫🇷 691 57 4ms 3 Oct 2024 450th NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 451st Alex-x90 🇺🇸 688 100 2ms 1 Oct 2024 452nd DialFrost 🇸🇬 687 94 20ms 1 Oct 2024 453rd dokutan 687 116 7ms 19 Oct 2024 454th MeWhenI 🇻🇦 686 68 285ms 2 Oct 2024 455th XenThe 🇬🇧 685 94 10ms 7 Jul 2025 456th ovs-code 🇩🇪 684 84 458ms 3 Oct 2024 457th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 458th KatieLG 🇬🇧 683 70 39ms 2 Oct 2025 459th MeWhenI 🇻🇦 681 108 141ms 2 Oct 2024 460th the-zammers 680 163 149ms 1 Dec 2024 461st tailorspy 679 128 403ms 4 Oct 2024 462nd GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 463rd Shanethegamer 🇺🇸 677 172 39ms 2 Oct 2024 464th snoozingnewt 🇨🇦 676 95 79ms 23 Oct 2025 465th edsrzf 🇳🇿 674 99 2,281ms 5 Jul 2025 465th jkelly467 674 99 2,384ms 26 days ago 467th Yax42 🇫🇷 674 129 70ms 8 Jan 2026 467th emgordon154 674 129 55ms 9 days ago 469th MeWhenI 🇻🇦 673 96 18ms 30 Jul 2025 470th jerrandolph 673 177 329ms 25 Sep 2025 470th CaedenHarper 🇨🇦 673 177 294ms 17 Nov 2025 472nd HumanoidCPU 671 96 10ms 7 Mar 2025 473rd error256 671 101 5ms 24 Oct 2024 474th emgordon154 670 115 138ms 9 Dec 2025 475th MeWhenI 🇻🇦 669 174 41ms 13 Feb 2025 476th Shanethegamer 🇺🇸 668 65 2ms 1 Oct 2024 477th madex 🇩🇪 668 103 1ms 2 Oct 2024 478th CaedenHarper 🇨🇦 667 140 594ms 3 Oct 2025 479th dbut2 🇦🇺 666 179 301ms 31 Oct 2024 480th emgordon154 665 111 4ms 12 Jan 2025 First Prev 401–480 of 886 Next Last