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 targrik 770 88 8ms 7 Feb 2025 322nd Waffle3z 770 103 2ms 2 Oct 2024 323rd retrohun 769 63 20ms 2 Oct 2024 324th AlephSquirrel 769 84 20ms 1 Oct 2024 324th kops-cg 769 84 20ms 22 Feb 2025 324th xnor-gate 769 84 21ms 23 Feb 2025 327th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 328th didion0 🇺🇸 766 84 14ms 10 Jan 2025 329th MeWhenI 🇻🇦 765 109 334ms 2 Oct 2024 329th edsrzf 🇳🇿 765 109 365ms 23 Jul 2025 331st ovs-code 🇩🇪 764 122 157ms 25 Apr 2025 332nd emplv 🇱🇻 763 76 136ms 29 Oct 2024 333rd albanian-laundromat 763 118 84ms 13 Nov 2025 334th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 335th MeWhenI 🇻🇦 761 89 6ms 2 Oct 2024 336th inventshah 760 85 22ms 4 Oct 2024 336th Artemis21 🇬🇧 760 85 11ms 10 Jan 2025 336th keelimeguy 🇺🇸 760 85 19ms 14 Jun 2025 339th emgordon154 759 63 35ms 18 Nov 2024 339th SirBogman 🇺🇸 759 63 33ms 19 Jul 2025 341st AlephSquirrel 757 76 445ms 1 Oct 2024 341st DialFrost 🇸🇬 757 76 1,013ms 30 Aug 2025 343rd weliveinhell 🇭🇹 757 85 10ms 1 Oct 2024 343rd SteRoy 757 85 10ms 13 May 2025 345th 0xjac 🇨🇭 754 158 287ms 17 Jun 2025 346th GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 347th stackofbears 750 52 34ms 14 Mar 2025 348th MeWhenI 🇻🇦 750 89 2,127ms 24 Oct 2024 349th DialFrost 🇸🇬 749 75 813ms 10 Oct 2024 350th Maznek 749 86 11ms 4 Oct 2024 351st sean-niemann 🇺🇸 749 116 409ms 24 Oct 2024 351st luuumine 🇫🇷 749 116 398ms 15 Dec 2025 353rd MeWhenI 🇻🇦 749 162 26ms 2 Oct 2024 354th luuumine 🇫🇷 748 92 1ms 5 Dec 2025 354th bzd7 748 92 2ms 7 Dec 2025 356th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 357th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 358th Shanethegamer 🇺🇸 747 64 35ms 3 Oct 2024 358th Andriamanitra 🇫🇮 747 64 36ms 5 Oct 2024 360th Babafaba 747 77 480ms 11 Nov 2025 361st sean-niemann 🇺🇸 747 93 111ms 24 Oct 2024 362nd Shanethegamer 🇺🇸 744 121 98ms 3 Oct 2024 363rd Natanaelel 🇸🇪 743 53 3ms 10 Jan 2026 364th SirBogman 🇺🇸 741 63 283ms 23 Jul 2025 365th Shanethegamer 🇺🇸 741 90 2,349ms 28 Oct 2024 365th ScottHamper 741 90 2,298ms 11 Dec 2025 367th DialFrost 🇸🇬 741 131 7ms 11 Dec 2024 368th KrausRaus 🇺🇸 740 87 11ms 1 Oct 2024 368th GeorgeStechman 🇬🇧 740 87 10ms 24 Oct 2024 368th coreynash 740 87 10ms 13 Feb 2025 368th kirjavascript 740 87 14ms 22 Jul 2025 372nd sean-niemann 🇺🇸 740 93 1ms 24 Oct 2024 373rd HumanoidCPU 738 78 438ms 7 Mar 2025 374th stefangimmillaro 736 92 8ms 2 Oct 2024 374th Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 376th MeWhenI 🇻🇦 736 111 116ms 2 Oct 2024 377th MeWhenI 🇻🇦 735 34 55ms 2 Oct 2024 377th emgordon154 735 34 63ms 11 Sep 2025 377th plcc0 735 34 68ms 20 days ago 380th Shanethegamer 🇺🇸 735 100 117ms 24 May 2025 381st Shanethegamer 🇺🇸 735 132 7ms 2 Oct 2024 382nd Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 382nd chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 384th wh3n3v3r 🇨🇿 734 88 11ms 18 Nov 2024 385th Shanethegamer 🇺🇸 733 116 1,027ms 1 Oct 2024 386th stefangimmillaro 732 94 1ms 30 Oct 2024 386th emgordon154 732 94 2ms 13 days ago 388th error256 731 109 8ms 24 Jul 2025 389th stefangimmillaro 731 114 326ms 13 Oct 2024 390th edsrzf 🇳🇿 730 52 113ms 16 Jan 2026 391st anter69 🇭🇺 729 78 1,271ms 1 Oct 2024 392nd Shanethegamer 🇺🇸 729 112 99ms 3 Oct 2024 393rd error256 728 98 416ms 17 Jan 2026 394th zacjl 724 110 7ms 10 Oct 2024 395th Shanethegamer 🇺🇸 724 126 1,391ms 2 Oct 2024 396th dtbao20 🇻🇳 723 89 12ms 1 Oct 2024 396th madeforlosers 723 89 12ms 17 Oct 2024 396th junkondo-jp 723 89 14ms 14 Dec 2024 396th alexsave 723 89 9ms 20 Jan 2026 400th Shanethegamer 🇺🇸 723 96 2ms 3 Oct 2024 First Prev 321–400 of 891 Next Last