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 janAkali 🇷🇺 569 147 355ms 10 Mar 2026 642nd flekAI 565 102 462ms 4 days ago 642nd jusaka 565 102 465ms 10 hours ago 644th aliakseikalosha 563 127 459ms 10 Oct 2024 645th jipsong 🇩🇪 562 115 18ms 12 May 2025 646th jgbaldwinbrown 561 123 2ms 14 Jan 2026 647th dokutan 561 155 435ms 10 Feb 2026 648th ravnskjaer 🇩🇰 560 167 455ms 15 Dec 2025 649th rowechenzhong 557 116 17ms 17 Oct 2024 650th CaedenHarper 🇨🇦 556 104 1,098ms 24 Nov 2025 651st madex 🇩🇪 556 116 11ms 1 Oct 2024 652nd edsrzf 🇳🇿 554 135 6ms 27 Feb 2025 653rd snoozingnewt 🇨🇦 554 148 126ms 20 Nov 2025 654th msbranicky 554 185 4ms 20 Jan 2025 655th FortuiteMan 🇫🇷 554 270 43ms 22 Nov 2025 656th MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 657th denkyuu1 553 102 350ms 5 days ago 658th dtbao20 🇻🇳 553 117 19ms 1 Oct 2024 658th Pyroan 553 117 18ms 22 Feb 2025 658th vgamula 🇺🇦 553 117 17ms 5 Aug 2025 658th FortuiteMan 🇫🇷 553 117 18ms 1 Dec 2025 658th yujqiao 553 117 25ms 16 Dec 2025 663rd gpikmddk 550 130 489ms 30 Oct 2025 664th ethanlally 550 170 377ms 19 Nov 2025 664th snoozingnewt 🇨🇦 550 170 485ms 5 Dec 2025 666th KatieLG 🇬🇧 549 105 635ms 11 Feb 2026 667th xyangst 549 171 171ms 1 Oct 2024 668th elgan65536 🇺🇸 548 118 11ms 2 Oct 2024 668th logvp 548 118 18ms 6 Oct 2024 668th ahmetdemirag 🇨🇾 548 118 10ms 6 Feb 2025 668th dirckvdende 548 118 17ms 10 Jul 2025 672nd JDiLenarda 🇫🇷 548 165 1,474ms 1 Oct 2024 673rd zakariamouhid 547 118 10ms 1 Oct 2024 674th kmathis22 547 171 350ms 19 Nov 2025 675th najs91 546 131 420ms 15 Oct 2024 675th bac0id 546 131 464ms 9 Jan 2025 675th CaedenHarper 🇨🇦 546 131 394ms 17 Oct 2025 678th jtaxen 543 119 18ms 21 Oct 2024 678th psbpsbp 543 119 9ms 19 Dec 2024 678th klixel 🇨🇦 543 119 10ms 9 Apr 2025 678th vhoulbreque 🇫🇷 543 119 16ms 21 Nov 2025 682nd eranws 542 119 11ms 23 Dec 2024 683rd Sciman101 540 147 2ms 26 Mar 2025 684th TaserTheFox 🇺🇸 539 120 18ms 8 Oct 2024 684th yokasuretsu 539 120 11ms 26 Jan 2025 684th Troon 539 120 10ms 17 Feb 2025 687th mousetail 🇳🇱 539 128 2ms 3 Oct 2024 688th msbranicky 536 175 156ms 13 Dec 2024 689th JRaspass 🇬🇧 534 74 3ms 22 days ago 690th BREMAUCY 🇫🇷 534 121 17ms 18 Jul 2025 690th retrohun 534 121 10ms 26 days ago 692nd deancureton 533 121 11ms 30 Dec 2024 693rd msbranicky 531 126 2,349ms 9 Jan 2025 694th jusaka 531 176 402ms 27 hours ago 695th chartung17 530 122 10ms 24 Mar 2025 696th Protothor 529 122 11ms 10 Mar 2026 697th msbranicky 526 123 17ms 3 Oct 2024 697th bobbysq 526 123 12ms 5 Oct 2024 697th wuzekai518 526 123 10ms 8 Oct 2024 697th denkyuu1 526 123 18ms 10 Mar 2026 697th fuzzylojik-golf 🇺🇸 526 123 17ms 20 days ago 702nd dokutan 526 131 2ms 10 Feb 2026 703rd Macweese 525 178 405ms 3 Aug 2025 704th galloj 🇨🇿 522 112 19ms 4 Oct 2024 705th snoozingnewt 🇨🇦 522 213 138ms 2 Nov 2025 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 bac0id 519 180 388ms 9 Jan 2025 710th sidok 517 109 235ms 13 Nov 2024 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 dokutan 517 143 210ms 19 Oct 2024 715th nephila-nacrea 🇬🇧 513 77 4ms 2 Oct 2024 716th emgordon154 513 156 8ms 13 Dec 2024 717th KatieLG 🇬🇧 512 146 9ms 2 Oct 2024 718th isaiah0311 🇺🇸 511 135 2ms 9 Feb 2026 719th KatieLG 🇬🇧 511 140 419ms 1 Oct 2024 720th yoshykai 511 183 374ms 12 Apr 2025 First Prev 641–720 of 999 Next Last