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 Gray Code Decoder Gray Code Encoder 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 Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder 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 Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 641st Mabeloid 🇳🇴 570 121 1ms 21 Oct 2025 642nd janAkali 🇷🇺 567 147 355ms 10 Mar 2026 643rd flekAI 565 102 462ms 2 hours ago 644th jipsong 🇩🇪 562 115 18ms 12 May 2025 645th aliakseikalosha 562 127 420ms 10 Oct 2024 646th dokutan 561 155 435ms 10 Feb 2026 647th jgbaldwinbrown 560 123 2ms 14 Jan 2026 648th ravnskjaer 🇩🇰 559 167 455ms 15 Dec 2025 649th rowechenzhong 557 116 17ms 17 Oct 2024 650th madex 🇩🇪 556 116 14ms 1 Oct 2024 651st CaedenHarper 🇨🇦 555 104 1,098ms 24 Nov 2025 652nd FortuiteMan 🇫🇷 554 270 40ms 22 Nov 2025 653rd MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 654th dtbao20 🇻🇳 553 117 19ms 1 Oct 2024 654th Pyroan 553 117 18ms 22 Feb 2025 654th vgamula 🇺🇦 553 117 17ms 5 Aug 2025 654th FortuiteMan 🇫🇷 553 117 18ms 1 Dec 2025 654th yujqiao 553 117 25ms 16 Dec 2025 659th denkyuu1 552 102 350ms 32 hours ago 660th snoozingnewt 🇨🇦 552 148 126ms 20 Nov 2025 661st msbranicky 552 185 4ms 20 Jan 2025 662nd edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 663rd gpikmddk 549 130 403ms 30 Oct 2025 664th JDiLenarda 🇫🇷 549 165 1,394ms 1 Oct 2024 665th ethanlally 549 170 377ms 19 Nov 2025 665th snoozingnewt 🇨🇦 549 170 485ms 5 Dec 2025 667th xyangst 549 171 171ms 1 Oct 2024 668th KatieLG 🇬🇧 548 105 635ms 11 Feb 2026 669th elgan65536 🇺🇸 548 118 11ms 2 Oct 2024 669th logvp 548 118 18ms 6 Oct 2024 669th ahmetdemirag 🇨🇾 548 118 10ms 6 Feb 2025 669th dirckvdende 548 118 17ms 10 Jul 2025 669th scpchicken 🇵🇼 548 118 46ms 3 days ago 674th zakariamouhid 546 118 10ms 1 Oct 2024 675th kmathis22 546 171 350ms 19 Nov 2025 676th najs91 545 131 383ms 15 Oct 2024 676th bac0id 545 131 422ms 9 Jan 2025 676th CaedenHarper 🇨🇦 545 131 370ms 17 Oct 2025 679th jtaxen 543 119 18ms 21 Oct 2024 679th psbpsbp 543 119 9ms 19 Dec 2024 679th klixel 🇨🇦 543 119 10ms 9 Apr 2025 679th vhoulbreque 🇫🇷 543 119 16ms 21 Nov 2025 683rd eranws 542 119 10ms 23 Dec 2024 683rd ComradeSquirrel 542 119 21ms 13 days ago 685th TaserTheFox 🇺🇸 539 120 18ms 8 Oct 2024 685th yokasuretsu 539 120 11ms 26 Jan 2025 685th Troon 539 120 10ms 17 Feb 2025 688th Sciman101 539 147 2ms 26 Mar 2025 689th mousetail 🇳🇱 538 128 2ms 3 Oct 2024 690th msbranicky 536 175 156ms 13 Dec 2024 691st BREMAUCY 🇫🇷 534 121 17ms 18 Jul 2025 691st retrohun 534 121 10ms 22 days ago 693rd JRaspass 🇬🇧 533 74 3ms 18 days ago 694th deancureton 533 121 10ms 30 Dec 2024 695th chartung17 530 122 10ms 24 Mar 2025 696th msbranicky 530 126 2,349ms 9 Jan 2025 697th Protothor 529 122 11ms 10 Mar 2026 698th msbranicky 526 123 17ms 3 Oct 2024 698th bobbysq 526 123 12ms 5 Oct 2024 698th wuzekai518 526 123 10ms 8 Oct 2024 698th denkyuu1 526 123 18ms 10 Mar 2026 698th fuzzylojik-golf 🇺🇸 526 123 17ms 16 days ago 703rd dokutan 526 131 2ms 10 Feb 2026 704th Macweese 525 178 405ms 3 Aug 2025 705th galloj 🇨🇿 522 112 19ms 4 Oct 2024 706th NotEvenIndian 521 124 14ms 22 Oct 2024 706th ridingqwerty 🇺🇸 521 124 20ms 16 Jan 2025 706th CommandLeo 🇮🇹 521 124 11ms 5 Oct 2025 709th snoozingnewt 🇨🇦 520 213 138ms 2 Nov 2025 710th bac0id 519 180 388ms 9 Jan 2025 711th bnic24 517 125 18ms 3 Oct 2024 711th adoxography 517 125 10ms 22 Oct 2024 711th lelbal 517 125 10ms 14 Oct 2025 714th sidok 516 109 257ms 13 Nov 2024 715th dokutan 514 143 210ms 19 Oct 2024 716th nephila-nacrea 🇬🇧 513 77 4ms 2 Oct 2024 717th emgordon154 511 156 8ms 13 Dec 2024 718th isaiah0311 🇺🇸 510 135 2ms 9 Feb 2026 719th KatieLG 🇬🇧 510 140 361ms 1 Oct 2024 720th yoshykai 510 183 374ms 12 Apr 2025 First Prev 641–720 of 933 Next Last