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 300th KatieLG 🇬🇧 775 83 1 Oct 2024 300th Larento 775 83 4 Nov 2024 300th Andrey-Plotnikov 775 83 13 Jan 2025 300th nathanadams 🇳🇿 775 83 10ms 15 days ago 305th adriweb 🇫🇷 775 102 2ms 5 Oct 2024 306th DialFrost 🇸🇬 773 76 30 Aug 2025 307th Shanethegamer 🇺🇸 773 120 442ms 27 days ago 308th sean-niemann 🇺🇸 771 105 440ms 1 Oct 2024 309th emgordon154 770 83 18 Nov 2024 310th sisyphus-ppcg 🇦🇺 769 62 39ms 3 Oct 2024 311th retrohun 769 63 20ms 2 Oct 2024 312th DialFrost 🇸🇬 769 91 3ms 1 Oct 2024 313th Natanaelel 🇸🇪 769 143 184ms 20 Apr 2025 314th emgordon154 768 166 2 Oct 2024 315th lifthrasiir 🇰🇷 767 37 3ms 27 Nov 2024 316th Waffle3z 767 103 4ms 2 Oct 2024 317th didion0 🇺🇸 766 84 10 Jan 2025 318th targrik 766 88 7 Feb 2025 319th jatloe 766 104 10ms 1 Oct 2024 320th DialFrost 🇸🇬 766 121 27 days ago 321st Shanethegamer 🇺🇸 763 124 7ms 4 Oct 2024 322nd DialFrost 🇸🇬 763 131 6ms 11 Dec 2024 323rd GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 324th ovs-code 🇩🇪 762 122 149ms 25 Apr 2025 325th albanian-laundromat 762 125 5 days ago 326th GrayJoKing 🇦🇺 761 79 1,080ms 1 Oct 2024 327th MeWhenI 🇻🇦 761 109 391ms 2 Oct 2024 327th edsrzf 🇳🇿 761 109 425ms 23 Jul 2025 329th MeWhenI 🇻🇦 758 89 2 Oct 2024 330th fourth-bit 758 105 17ms 1 Oct 2024 330th jared-hughes 758 105 17ms 3 Oct 2024 330th mattyhempstead 758 105 29ms 7 Oct 2024 333rd Shanethegamer 🇺🇸 758 132 8ms 2 Oct 2024 334th emgordon154 757 63 40ms 18 Nov 2024 334th SirBogman 🇺🇸 757 63 19 Jul 2025 336th weliveinhell 🇭🇹 757 85 1 Oct 2024 336th SteRoy 757 85 13 May 2025 338th sean-niemann 🇺🇸 754 93 2ms 24 Oct 2024 339th albanian-laundromat 753 78 5 days ago 340th MeWhenI 🇻🇦 751 88 553ms 2 Oct 2024 341st davecame 751 106 17ms 1 Oct 2024 341st starfihs 751 106 10ms 2 Oct 2024 341st rschwa6308 🇺🇸 751 106 18ms 28 Oct 2024 341st snydej 751 106 18ms 21 Nov 2024 341st andrewjc2000 751 106 16ms 17 Jul 2025 341st qpwoeirut 751 106 11ms 19 Aug 2025 347th 0xjac 🇨🇭 751 158 296ms 17 Jun 2025 348th GrayJoKing 🇦🇺 749 90 1 Oct 2024 349th stackofbears 748 52 14 Mar 2025 350th Maznek 748 86 4 Oct 2024 351st rak1507 🇬🇧 747 38 2ms 30 Dec 2024 352nd MeWhenI 🇻🇦 746 89 24 Oct 2024 353rd stefangimmillaro 746 94 2ms 30 Oct 2024 354th Shanethegamer 🇺🇸 745 64 44ms 3 Oct 2024 354th Andriamanitra 🇫🇮 745 64 38ms 5 Oct 2024 356th MeWhenI 🇻🇦 745 106 2ms 2 Oct 2024 357th commandblockguy 🇺🇸 744 107 20ms 7 Oct 2024 357th zbreit 🇺🇸 744 107 20ms 29 Oct 2024 357th StardustGogeta 744 107 16ms 30 Oct 2024 357th ZakkkkAttackkkk 🇵🇭 744 107 18ms 8 Feb 2025 357th InigoK 🇺🇸 744 107 17ms 22 Sep 2025 362nd sean-niemann 🇺🇸 743 93 132ms 24 Oct 2024 363rd DialFrost 🇸🇬 742 106 13 Dec 2024 364th SirBogman 🇺🇸 741 63 280ms 23 Jul 2025 365th sean-niemann 🇺🇸 740 116 429ms 24 Oct 2024 366th KrausRaus 🇺🇸 739 87 1 Oct 2024 366th GeorgeStechman 🇬🇧 739 87 24 Oct 2024 366th coreynash 739 87 13 Feb 2025 369th Shanethegamer 🇺🇸 738 90 28 Oct 2024 370th DialFrost 🇸🇬 737 76 9 Oct 2024 371st neihousaigaai 737 108 17ms 4 Oct 2024 371st StefanHabel 🇨🇦 737 108 24ms 23 Jan 2025 371st CaedenHarper 🇨🇦 737 108 17ms 22 Jul 2025 371st BrunoVisnadi 🇧🇷 737 108 17ms 20 days ago 375th MeWhenI 🇻🇦 735 34 61ms 2 Oct 2024 First Prev 301–375 of 783 Next Last