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 Continued Fractions 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four 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 ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 Continued Fractions 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four 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 318th Andrey-Plotnikov 776 83 11ms 13 Jan 2025 318th nathanadams 🇳🇿 776 83 9ms 6 Oct 2025 323rd xsot 🇸🇬 776 125 7ms 20 Oct 2024 324th Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 325th sisyphus-ppcg 🇦🇺 772 62 40ms 3 Oct 2024 326th DialFrost 🇸🇬 772 121 369ms 24 Sep 2025 327th DialFrost 🇸🇬 771 90 2ms 18 Nov 2025 328th sean-niemann 🇺🇸 771 105 461ms 1 Oct 2024 329th targrik 770 88 11ms 7 Feb 2025 330th Waffle3z 770 103 2ms 2 Oct 2024 331st retrohun 769 63 20ms 2 Oct 2024 332nd AlephSquirrel 769 84 20ms 1 Oct 2024 332nd kops-cg 769 84 20ms 22 Feb 2025 332nd xnor-gate 769 84 21ms 23 Feb 2025 335th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 336th dokutan 767 75 421ms 8 hours ago 337th didion0 🇺🇸 767 84 11ms 10 Jan 2025 338th ovs-code 🇩🇪 766 122 156ms 25 Apr 2025 339th MeWhenI 🇻🇦 765 109 372ms 2 Oct 2024 340th emplv 🇱🇻 764 76 188ms 29 Oct 2024 341st albanian-laundromat 763 118 90ms 13 Nov 2025 342nd GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 343rd MeWhenI 🇻🇦 761 89 6ms 2 Oct 2024 344th emgordon154 760 63 35ms 18 Nov 2024 344th SirBogman 🇺🇸 760 63 33ms 19 Jul 2025 346th inventshah 760 85 22ms 4 Oct 2024 346th Artemis21 🇬🇧 760 85 11ms 10 Jan 2025 346th keelimeguy 🇺🇸 760 85 19ms 14 Jun 2025 349th DialFrost 🇸🇬 759 76 1,013ms 30 Aug 2025 350th albanian-laundromat 759 161 27ms 4 days ago 351st weliveinhell 🇭🇹 758 85 10ms 1 Oct 2024 351st SteRoy 758 85 14ms 13 May 2025 353rd AlephSquirrel 757 76 445ms 1 Oct 2024 354th 0xjac 🇨🇭 754 158 266ms 17 Jun 2025 355th MeWhenI 🇻🇦 754 162 26ms 2 Oct 2024 356th GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 357th stackofbears 750 52 34ms 14 Mar 2025 358th DialFrost 🇸🇬 750 75 813ms 10 Oct 2024 359th MeWhenI 🇻🇦 750 89 2,127ms 24 Oct 2024 360th Maznek 749 86 10ms 4 Oct 2024 361st sean-niemann 🇺🇸 749 116 463ms 24 Oct 2024 361st luuumine 🇫🇷 749 116 475ms 15 Dec 2025 363rd Shanethegamer 🇺🇸 748 64 35ms 3 Oct 2024 363rd Andriamanitra 🇫🇮 748 64 36ms 5 Oct 2024 365th luuumine 🇫🇷 748 92 1ms 5 Dec 2025 365th bzd7 748 92 2ms 7 Dec 2025 367th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 368th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 369th Babafaba 747 77 480ms 11 Nov 2025 370th sean-niemann 🇺🇸 747 93 114ms 24 Oct 2024 371st Shanethegamer 🇺🇸 744 121 89ms 3 Oct 2024 372nd Natanaelel 🇸🇪 743 53 3ms 10 Jan 2026 373rd JOrE20 743 87 17ms 21 days ago 374th SirBogman 🇺🇸 741 63 309ms 23 Jul 2025 375th KrausRaus 🇺🇸 741 87 11ms 1 Oct 2024 375th GeorgeStechman 🇬🇧 741 87 9ms 24 Oct 2024 375th coreynash 741 87 14ms 13 Feb 2025 375th kirjavascript 741 87 11ms 22 Jul 2025 379th Shanethegamer 🇺🇸 741 90 2,349ms 28 Oct 2024 379th ScottHamper 741 90 2,298ms 11 Dec 2025 381st DialFrost 🇸🇬 741 131 7ms 11 Dec 2024 382nd sean-niemann 🇺🇸 740 93 1ms 24 Oct 2024 383rd HumanoidCPU 738 78 438ms 7 Mar 2025 384th stefangimmillaro 736 92 8ms 2 Oct 2024 384th Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 386th MeWhenI 🇻🇦 736 111 128ms 2 Oct 2024 387th MeWhenI 🇻🇦 735 34 55ms 2 Oct 2024 387th emgordon154 735 34 63ms 11 Sep 2025 387th plcc0 735 34 68ms 31 Jan 2026 390th Shanethegamer 🇺🇸 735 100 162ms 24 May 2025 391st Shanethegamer 🇺🇸 735 132 7ms 2 Oct 2024 392nd Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 392nd chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 394th wh3n3v3r 🇨🇿 734 88 11ms 18 Nov 2024 395th Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 396th stefangimmillaro 732 94 1ms 30 Oct 2024 396th emgordon154 732 94 2ms 7 Feb 2026 398th error256 731 109 7ms 24 Jul 2025 399th stefangimmillaro 731 114 376ms 13 Oct 2024 400th edsrzf 🇳🇿 730 52 118ms 16 Jan 2026 First Prev 321–400 of 908 Next Last