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 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 Apéry’s Constant Binary Lambda Calculus 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 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 ><> 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 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 ><> 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 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 321st lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 322nd didion0 🇺🇸 766 84 10ms 10 Jan 2025 323rd MeWhenI 🇻🇦 765 109 334ms 2 Oct 2024 323rd edsrzf 🇳🇿 765 109 365ms 23 Jul 2025 325th ovs-code 🇩🇪 764 122 169ms 25 Apr 2025 326th emplv 🇱🇻 763 76 136ms 29 Oct 2024 327th albanian-laundromat 763 118 84ms 13 Nov 2025 328th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 329th MeWhenI 🇻🇦 761 89 6ms 2 Oct 2024 330th inventshah 760 85 22ms 4 Oct 2024 330th Artemis21 🇬🇧 760 85 11ms 10 Jan 2025 330th keelimeguy 🇺🇸 760 85 19ms 14 Jun 2025 333rd emgordon154 759 63 35ms 18 Nov 2024 333rd SirBogman 🇺🇸 759 63 33ms 19 Jul 2025 335th weliveinhell 🇭🇹 757 85 10ms 1 Oct 2024 335th SteRoy 757 85 11ms 13 May 2025 337th AlephSquirrel 756 76 445ms 1 Oct 2024 338th DialFrost 🇸🇬 754 131 7ms 11 Dec 2024 339th 0xjac 🇨🇭 754 158 287ms 17 Jun 2025 340th GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 341st stackofbears 750 52 35ms 14 Mar 2025 342nd MeWhenI 🇻🇦 750 89 2,127ms 24 Oct 2024 343rd DialFrost 🇸🇬 749 75 813ms 10 Oct 2024 344th Maznek 749 86 10ms 4 Oct 2024 345th sean-niemann 🇺🇸 749 116 411ms 24 Oct 2024 345th luuumine 🇫🇷 749 116 430ms 15 Dec 2025 347th MeWhenI 🇻🇦 749 162 26ms 2 Oct 2024 348th luuumine 🇫🇷 748 92 1ms 5 Dec 2025 348th bzd7 748 92 2ms 7 Dec 2025 350th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 351st Shanethegamer 🇺🇸 748 132 7ms 2 Oct 2024 352nd rak1507 🇬🇧 747 38 2ms 30 Dec 2024 353rd Shanethegamer 🇺🇸 747 64 35ms 3 Oct 2024 353rd Andriamanitra 🇫🇮 747 64 40ms 5 Oct 2024 355th Babafaba 747 77 496ms 11 Nov 2025 356th Shanethegamer 🇺🇸 744 121 98ms 3 Oct 2024 357th sean-niemann 🇺🇸 743 93 108ms 24 Oct 2024 358th Natanaelel 🇸🇪 742 53 3ms 10 Jan 2026 359th SirBogman 🇺🇸 741 63 283ms 23 Jul 2025 360th Shanethegamer 🇺🇸 741 90 2,349ms 28 Oct 2024 360th ScottHamper 741 90 2,298ms 11 Dec 2025 362nd KrausRaus 🇺🇸 740 87 10ms 1 Oct 2024 362nd GeorgeStechman 🇬🇧 740 87 10ms 24 Oct 2024 362nd coreynash 740 87 9ms 13 Feb 2025 362nd kirjavascript 740 87 10ms 22 Jul 2025 366th sean-niemann 🇺🇸 740 93 3ms 24 Oct 2024 367th HumanoidCPU 737 78 438ms 7 Mar 2025 368th stefangimmillaro 736 92 8ms 2 Oct 2024 368th Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 370th MeWhenI 🇻🇦 736 111 116ms 2 Oct 2024 371st MeWhenI 🇻🇦 735 34 58ms 2 Oct 2024 371st emgordon154 735 34 69ms 11 Sep 2025 371st plcc0 735 34 68ms 15 days ago 374th Shanethegamer 🇺🇸 735 100 122ms 24 May 2025 375th Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 375th chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 377th wh3n3v3r 🇨🇿 734 88 14ms 18 Nov 2024 378th Shanethegamer 🇺🇸 733 116 1,026ms 1 Oct 2024 379th stefangimmillaro 732 94 1ms 30 Oct 2024 379th emgordon154 732 94 2ms 8 days ago 381st Shanethegamer 🇺🇸 731 101 4ms 2 Oct 2024 382nd error256 731 109 10ms 24 Jul 2025 383rd stefangimmillaro 731 114 326ms 13 Oct 2024 384th edsrzf 🇳🇿 730 52 113ms 16 Jan 2026 385th anter69 🇭🇺 729 78 1,271ms 1 Oct 2024 386th Shanethegamer 🇺🇸 729 112 99ms 3 Oct 2024 387th error256 728 98 416ms 17 Jan 2026 388th CLOStrophobic 🇮🇹 728 160 40ms 27 Feb 2025 389th zacjl 724 110 7ms 10 Oct 2024 390th Shanethegamer 🇺🇸 724 126 1,391ms 2 Oct 2024 391st dtbao20 🇻🇳 723 89 10ms 1 Oct 2024 391st madeforlosers 723 89 10ms 17 Oct 2024 391st junkondo-jp 723 89 9ms 14 Dec 2024 391st alexsave 723 89 10ms 26 days ago 395th annaproxy 723 132 14ms 1 Oct 2024 396th MeWhenI 🇻🇦 721 179 1,697ms 7 Nov 2025 397th weeble 720 74 6ms 1 Jul 2025 398th MeWhenI 🇻🇦 720 78 322ms 2 Oct 2024 399th Shanethegamer 🇺🇸 720 96 2ms 3 Oct 2024 400th nwellnhof 🇩🇪 718 90 20ms 1 Oct 2024 First Prev 321–400 of 884 Next Last