Card Number Validation in all languages in bytes. 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 Erlang 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 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 Erlang 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 375th emgordon154 735 34 65ms 11 Sep 2025 377th lifthrasiir 🇰🇷 735 90 568ms 2 Dec 2024 378th Shanethegamer 🇺🇸 735 121 3 Oct 2024 379th MeWhenI 🇻🇦 734 162 27ms 2 Oct 2024 380th stefangimmillaro 733 92 2 Oct 2024 380th Shanethegamer 🇺🇸 733 92 3 Oct 2024 382nd Shanethegamer 🇺🇸 733 116 21ms 1 Oct 2024 383rd Shanethegamer 🇺🇸 733 172 42ms 2 Oct 2024 384th kirjavascript 731 88 15 Mar 2025 385th Shanethegamer 🇺🇸 729 96 4ms 3 Oct 2024 386th MeWhenI 🇻🇦 729 111 2 Oct 2024 387th stefangimmillaro 728 114 402ms 13 Oct 2024 388th Shanethegamer 🇺🇸 727 100 116ms 24 May 2025 389th anter69 🇭🇺 726 78 1 Oct 2024 390th MeWhenI 🇻🇦 726 88 2 Oct 2024 390th Shanethegamer 🇺🇸 726 88 8 Jan 2025 392nd MeWhenI 🇻🇦 725 174 46ms 13 Feb 2025 393rd Shanethegamer 🇺🇸 724 101 2 Oct 2024 394th cros107 🇦🇺 724 110 17ms 1 Jan 2025 394th guilhem-roy 🇫🇷 724 110 18ms 29 May 2025 394th albanian-laundromat 724 110 5 days ago 397th Shanethegamer 🇺🇸 724 126 1,241ms 2 Oct 2024 398th dtbao20 🇻🇳 723 89 1 Oct 2024 398th madeforlosers 723 89 17 Oct 2024 398th junkondo-jp 723 89 14 Dec 2024 401st Shanethegamer 🇺🇸 723 112 3 Oct 2024 402nd annaproxy 723 132 19ms 1 Oct 2024 403rd Shanethegamer 🇺🇸 721 156 32ms 2 Oct 2024 404th weeble 720 74 8ms 1 Jul 2025 405th MeWhenI 🇻🇦 718 78 2 Oct 2024 406th voytxt 🇨🇿 718 89 17 Apr 2025 407th mousetail 🇳🇱 717 111 22ms 6 Oct 2024 408th alexsave 715 90 28 Oct 2024 409th anter69 🇭🇺 712 67 1 Oct 2024 410th SirBogman 🇺🇸 711 93 521ms 23 Jul 2025 411th OllieBoyne 🇬🇧 711 112 23ms 17 Oct 2024 411th WillConker 711 112 11ms 22 Oct 2024 411th maxgodfrey2004 🇨🇦 711 112 14ms 4 Jan 2025 414th rzv-me 710 95 5 Oct 2024 415th snyderek 🇺🇸 710 121 70ms 1 Oct 2024 416th Natanaelel 🇸🇪 707 55 1 Mar 2025 417th SB-945 705 113 17ms 1 Oct 2024 417th Artemis21 🇬🇧 705 113 19ms 23 Jan 2025 417th fkantelberg 705 113 11ms 11 Jul 2025 420th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 421st DialFrost 🇸🇬 704 132 211ms 8 Apr 2025 422nd Shanethegamer 🇺🇸 703 118 417ms 2 Oct 2024 423rd janlelis 702 68 37ms 1 Oct 2024 424th emgordon154 702 76 6ms 7 Jun 2025 425th Alex-x90 🇺🇸 701 100 2ms 1 Oct 2024 426th cbrt-x 701 157 197ms 1 Oct 2024 427th LukeBridges 🇬🇧 699 92 3 Oct 2024 428th mousetail 🇳🇱 699 133 167ms 3 Oct 2024 429th HumanoidCPU 698 114 61ms 7 Mar 2025 429th blaztoma 🇱🇹 698 114 18ms 27 days ago 429th solisolu 698 114 5 days ago 432nd BlankSpruce 698 123 487ms 1 Oct 2024 433rd emgordon154 694 101 2ms 25 Nov 2024 434th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 435th emgordon154 693 134 210ms 25 Feb 2025 436th Salutations45 692 93 17 Nov 2024 436th strattonwhisler 692 93 26 Mar 2025 438th jipsong 🇩🇪 692 115 17ms 12 May 2025 439th Alex-x90 🇺🇸 692 124 450ms 1 Oct 2024 439th Herbert00709 🇵🇱 692 124 66ms 14 Jun 2025 441st albanian-laundromat 692 147 2ms 30 Jun 2025 442nd tobeannouncd 692 159 162ms 13 Dec 2024 443rd pardouin 🇫🇷 688 57 5ms 3 Oct 2024 444th NickTheEASDude 🇺🇸 687 115 3ms 17 Dec 2024 445th MeWhenI 🇻🇦 686 68 254ms 2 Oct 2024 446th Bmrl7 686 116 11ms 3 Oct 2024 446th rowechenzhong 686 116 13ms 17 Oct 2024 448th Lv0Sys 🇵🇱 684 94 15 Jun 2025 449th error256 683 104 386ms 14 Oct 2024 450th madex 🇩🇪 681 103 2ms 2 Oct 2024 First Prev 376–450 of 783 Next Last