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 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 Chars Time Submitted 301st ovs-code 🇩🇪 762 122 149ms 25 Apr 2025 302nd albanian-laundromat 762 125 44ms 5 days ago 303rd GrayJoKing 🇦🇺 761 79 1,080ms 1 Oct 2024 304th MeWhenI 🇻🇦 761 109 391ms 2 Oct 2024 304th edsrzf 🇳🇿 761 109 425ms 23 Jul 2025 306th inventshah 759 85 23ms 4 Oct 2024 306th Artemis21 🇬🇧 759 85 10ms 10 Jan 2025 306th keelimeguy 🇺🇸 759 85 18ms 14 Jun 2025 309th MeWhenI 🇻🇦 758 89 4ms 2 Oct 2024 310th Shanethegamer 🇺🇸 758 132 8ms 2 Oct 2024 311th emgordon154 757 63 40ms 18 Nov 2024 311th SirBogman 🇺🇸 757 63 41ms 19 Jul 2025 313th weliveinhell 🇭🇹 757 85 11ms 1 Oct 2024 313th SteRoy 757 85 12ms 13 May 2025 315th AlephSquirrel 755 76 539ms 1 Oct 2024 316th sean-niemann 🇺🇸 754 93 2ms 24 Oct 2024 317th albanian-laundromat 753 78 985ms 5 days ago 318th Babafaba 751 86 20ms 7 days ago 319th 0xjac 🇨🇭 751 158 296ms 17 Jun 2025 320th GrayJoKing 🇦🇺 749 90 5ms 1 Oct 2024 321st stackofbears 748 52 38ms 14 Mar 2025 322nd Maznek 748 86 9ms 4 Oct 2024 323rd rak1507 🇬🇧 747 38 2ms 30 Dec 2024 324th DialFrost 🇸🇬 747 75 822ms 10 Oct 2024 325th MeWhenI 🇻🇦 746 89 2,687ms 24 Oct 2024 326th stefangimmillaro 746 94 2ms 30 Oct 2024 327th Shanethegamer 🇺🇸 745 64 44ms 3 Oct 2024 327th Andriamanitra 🇫🇮 745 64 38ms 5 Oct 2024 329th albanian-laundromat 745 77 619ms 4 Aug 2025 330th MeWhenI 🇻🇦 745 106 2ms 2 Oct 2024 331st sean-niemann 🇺🇸 743 93 130ms 24 Oct 2024 332nd DialFrost 🇸🇬 742 106 11ms 13 Dec 2024 333rd SirBogman 🇺🇸 741 63 280ms 23 Jul 2025 334th sean-niemann 🇺🇸 740 116 429ms 24 Oct 2024 335th KrausRaus 🇺🇸 739 87 10ms 1 Oct 2024 335th GeorgeStechman 🇬🇧 739 87 9ms 24 Oct 2024 335th coreynash 739 87 10ms 13 Feb 2025 335th kirjavascript 739 87 10ms 22 Jul 2025 339th Shanethegamer 🇺🇸 738 90 2,892ms 28 Oct 2024 340th HumanoidCPU 736 78 461ms 7 Mar 2025 341st MeWhenI 🇻🇦 735 34 61ms 2 Oct 2024 341st emgordon154 735 34 65ms 11 Sep 2025 343rd Shanethegamer 🇺🇸 735 121 416ms 3 Oct 2024 344th wh3n3v3r 🇨🇿 734 88 11ms 18 Nov 2024 345th MeWhenI 🇻🇦 734 162 27ms 2 Oct 2024 346th stefangimmillaro 733 92 6ms 2 Oct 2024 346th Shanethegamer 🇺🇸 733 92 7ms 3 Oct 2024 348th Shanethegamer 🇺🇸 733 116 21ms 1 Oct 2024 349th error256 731 109 10ms 24 Jul 2025 350th Shanethegamer 🇺🇸 729 96 4ms 3 Oct 2024 351st MeWhenI 🇻🇦 729 111 141ms 2 Oct 2024 352nd stefangimmillaro 728 114 402ms 13 Oct 2024 353rd Shanethegamer 🇺🇸 727 100 116ms 24 May 2025 354th anter69 🇭🇺 726 78 1,023ms 1 Oct 2024 355th Shanethegamer 🇺🇸 724 101 5ms 2 Oct 2024 356th zacjl 724 110 10ms 10 Oct 2024 357th Shanethegamer 🇺🇸 724 126 1,241ms 2 Oct 2024 358th dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 358th madeforlosers 723 89 10ms 17 Oct 2024 358th junkondo-jp 723 89 9ms 14 Dec 2024 361st Shanethegamer 🇺🇸 723 112 112ms 3 Oct 2024 362nd annaproxy 723 132 19ms 1 Oct 2024 363rd CLOStrophobic 🇮🇹 723 160 45ms 27 Feb 2025 364th Shanethegamer 🇺🇸 721 156 30ms 2 Oct 2024 365th weeble 720 74 8ms 1 Jul 2025 366th MeWhenI 🇻🇦 718 78 336ms 2 Oct 2024 367th nwellnhof 🇩🇪 717 90 93ms 1 Oct 2024 367th ovs-code 🇩🇪 717 90 22ms 3 Oct 2024 367th ryyyn 🇺🇸 717 90 20ms 26 Jul 2025 367th luuumine 🇫🇷 717 90 17ms 14 days ago 371st ovs-code 🇩🇪 716 81 132ms 17 Apr 2025 372nd alexsave 715 90 11ms 28 Oct 2024 373rd rzv-me 710 95 8ms 5 Oct 2024 374th snyderek 🇺🇸 710 121 70ms 1 Oct 2024 375th 5cw 🇺🇸 709 91 15ms 1 Oct 2024 First Prev 301–375 of 780 Next Last