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 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 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 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 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 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 Turtle Tutorial # Golfer Points Chars Time Submitted 376th MeWhenI 🇻🇦 721 179 1,554ms 26 days ago 377th weeble 720 74 8ms 1 Jul 2025 378th MeWhenI 🇻🇦 720 78 287ms 2 Oct 2024 379th Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 380th nwellnhof 🇩🇪 717 90 19ms 1 Oct 2024 380th ovs-code 🇩🇪 717 90 16ms 3 Oct 2024 380th ryyyn 🇺🇸 717 90 21ms 26 Jul 2025 380th luuumine 🇫🇷 717 90 18ms 8 Oct 2025 380th JOrE20 🇺🇸 717 90 22ms 3 days ago 385th ovs-code 🇩🇪 716 81 133ms 17 Apr 2025 386th alexsave 715 90 9ms 28 Oct 2024 387th h3ra993huskp 🇯🇵 712 131 337ms 4 days ago 388th rzv-me 711 95 5ms 5 Oct 2024 389th 5cw 🇺🇸 710 91 16ms 1 Oct 2024 389th stefangimmillaro 710 91 17ms 13 Oct 2024 389th dokutan 710 91 10ms 19 Oct 2024 389th GrayJoKing 🇦🇺 710 91 19ms 2 Jul 2025 393rd snyderek 🇺🇸 710 121 57ms 1 Oct 2024 394th Natanaelel 🇸🇪 709 55 42ms 1 Mar 2025 395th DialFrost 🇸🇬 709 106 11ms 13 Dec 2024 396th GrayJoKing 🇦🇺 707 82 121ms 1 Oct 2024 397th DialFrost 🇸🇬 707 132 213ms 8 Apr 2025 398th Shanethegamer 🇺🇸 706 118 332ms 2 Oct 2024 399th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 400th Alex-x90 🇺🇸 703 100 2ms 1 Oct 2024 401st cbrt-x 703 157 197ms 1 Oct 2024 402nd janlelis 702 68 37ms 1 Oct 2024 402nd tatzyr 🇯🇵 702 68 39ms 23 Dec 2024 404th emgordon154 702 76 6ms 7 Jun 2025 405th Shanethegamer 🇺🇸 702 92 16ms 3 Oct 2024 405th error256 702 92 21ms 7 Oct 2024 405th thatbirdguythatuknownot 702 92 16ms 14 Oct 2024 408th sean-niemann 🇺🇸 701 82 407ms 23 Dec 2024 409th mousetail 🇳🇱 701 133 152ms 3 Oct 2024 410th LukeBridges 🇬🇧 699 92 9ms 3 Oct 2024 411th BlankSpruce 698 123 388ms 1 Oct 2024 412th emgordon154 696 101 2ms 25 Nov 2024 413th emgordon154 696 134 213ms 25 Feb 2025 414th tobeannouncd 695 159 162ms 13 Dec 2024 415th Bulmenisaurus 694 93 16ms 6 Oct 2024 415th lynn 694 93 16ms 8 Jan 2025 415th RaBa21 🇭🇺 694 93 16ms 19 Jul 2025 415th KasperKivimaeki 🇫🇮 694 93 17ms 3 days ago 419th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 420th Shanethegamer 🇺🇸 693 83 500ms 5 Oct 2024 421st xyangst 692 93 11ms 1 Oct 2024 421st Salutations45 692 93 10ms 17 Nov 2024 421st strattonwhisler 692 93 9ms 26 Mar 2025 424th Alex-x90 🇺🇸 692 124 382ms 1 Oct 2024 424th Herbert00709 🇵🇱 692 124 58ms 14 Jun 2025 426th NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 427th pardouin 🇫🇷 688 57 5ms 3 Oct 2024 428th DialFrost 🇸🇬 687 94 16ms 1 Oct 2024 429th dokutan 687 116 8ms 19 Oct 2024 430th MeWhenI 🇻🇦 686 68 223ms 2 Oct 2024 431st Lv0Sys 🇵🇱 685 94 9ms 15 Jun 2025 431st XenThe 🇬🇧 685 94 9ms 7 Jul 2025 433rd error256 685 104 367ms 14 Oct 2024 434th ovs-code 🇩🇪 684 84 541ms 3 Oct 2024 435th madex 🇩🇪 683 103 2ms 2 Oct 2024 436th KatieLG 🇬🇧 682 70 41ms 2 Oct 2025 437th aDwarfNamedUrist 682 162 183ms 1 Sep 2025 438th Shanethegamer 🇺🇸 679 65 2ms 1 Oct 2024 439th MeWhenI 🇻🇦 678 108 179ms 2 Oct 2024 440th the-zammers 678 163 140ms 1 Dec 2024 441st Shanethegamer 🇺🇸 677 172 42ms 2 Oct 2024 442nd plcc0 676 37 70ms 6 Apr 2025 443rd snoozingnewt 🇨🇦 676 95 75ms 23 Oct 2025 444th BlankSpruce 676 104 2ms 1 Oct 2024 445th MeWhenI 🇻🇦 673 96 16ms 30 Jul 2025 446th jerrandolph 673 177 258ms 25 Sep 2025 446th CaedenHarper 🇨🇦 673 177 270ms 16 days ago 448th edsrzf 🇳🇿 671 99 2,289ms 5 Jul 2025 449th tailorspy 671 128 389ms 4 Oct 2024 450th HumanoidCPU 670 96 9ms 7 Mar 2025 First Prev 376–450 of 833 Next Last