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 640th snoozingnewt 🇨🇦 576 112 12ms 2 Nov 2025 642nd MeWhenI 🇻🇦 572 164 201ms 6 Oct 2024 643rd Mabeloid 🇳🇴 570 121 1ms 21 Oct 2025 644th janAkali 🇷🇺 569 147 355ms 10 Mar 2026 645th flekAI 565 102 462ms 7 days ago 645th jusaka 565 102 465ms 3 days ago 647th aliakseikalosha 563 127 459ms 10 Oct 2024 648th jipsong 🇩🇪 562 115 18ms 12 May 2025 649th jgbaldwinbrown 561 123 2ms 14 Jan 2026 650th dokutan 561 155 435ms 10 Feb 2026 651st ravnskjaer 🇩🇰 560 167 455ms 15 Dec 2025 652nd rowechenzhong 557 116 17ms 17 Oct 2024 653rd CaedenHarper 🇨🇦 556 104 1,098ms 24 Nov 2025 654th madex 🇩🇪 556 116 11ms 1 Oct 2024 655th edsrzf 🇳🇿 554 135 6ms 27 Feb 2025 656th snoozingnewt 🇨🇦 554 148 138ms 20 Nov 2025 657th msbranicky 554 185 4ms 20 Jan 2025 658th FortuiteMan 🇫🇷 554 270 43ms 22 Nov 2025 659th MeWhenI 🇻🇦 554 290 8ms 2 Oct 2024 660th denkyuu1 553 102 350ms 8 days ago 661st dtbao20 🇻🇳 553 117 19ms 1 Oct 2024 661st Pyroan 553 117 18ms 22 Feb 2025 661st vgamula 🇺🇦 553 117 17ms 5 Aug 2025 661st FortuiteMan 🇫🇷 553 117 18ms 1 Dec 2025 661st yujqiao 553 117 25ms 16 Dec 2025 666th gpikmddk 550 130 489ms 30 Oct 2025 667th ethanlally 550 170 377ms 19 Nov 2025 667th snoozingnewt 🇨🇦 550 170 485ms 5 Dec 2025 669th KatieLG 🇬🇧 549 105 635ms 11 Feb 2026 670th JDiLenarda 🇫🇷 549 165 1,474ms 1 Oct 2024 671st xyangst 549 171 182ms 1 Oct 2024 672nd elgan65536 🇺🇸 548 118 11ms 2 Oct 2024 672nd logvp 548 118 18ms 6 Oct 2024 672nd ahmetdemirag 🇨🇾 548 118 10ms 6 Feb 2025 672nd dirckvdende 548 118 17ms 10 Jul 2025 676th zakariamouhid 547 118 10ms 1 Oct 2024 677th kmathis22 547 171 350ms 19 Nov 2025 678th najs91 546 131 420ms 15 Oct 2024 678th bac0id 546 131 464ms 9 Jan 2025 678th CaedenHarper 🇨🇦 546 131 394ms 17 Oct 2025 681st jtaxen 543 119 18ms 21 Oct 2024 681st psbpsbp 543 119 9ms 19 Dec 2024 681st klixel 🇨🇦 543 119 10ms 9 Apr 2025 681st vhoulbreque 🇫🇷 543 119 16ms 21 Nov 2025 685th eranws 542 119 11ms 23 Dec 2024 686th Sciman101 540 147 2ms 26 Mar 2025 687th TaserTheFox 🇺🇸 539 120 18ms 8 Oct 2024 687th yokasuretsu 539 120 11ms 26 Jan 2025 687th Troon 539 120 10ms 17 Feb 2025 690th mousetail 🇳🇱 539 128 2ms 3 Oct 2024 691st msbranicky 536 175 166ms 13 Dec 2024 692nd JRaspass 🇬🇧 534 74 3ms 26 days ago 693rd BREMAUCY 🇫🇷 534 121 17ms 18 Jul 2025 693rd retrohun 534 121 10ms 21 Mar 2026 695th deancureton 533 121 11ms 30 Dec 2024 696th msbranicky 531 126 2,349ms 9 Jan 2025 697th jusaka 531 176 402ms 4 days ago 698th chartung17 530 122 10ms 24 Mar 2025 699th Protothor 529 122 11ms 10 Mar 2026 700th msbranicky 526 123 17ms 3 Oct 2024 700th bobbysq 526 123 12ms 5 Oct 2024 700th wuzekai518 526 123 10ms 8 Oct 2024 700th denkyuu1 526 123 18ms 10 Mar 2026 700th fuzzylojik-golf 🇺🇸 526 123 17ms 23 days ago 705th dokutan 526 131 2ms 10 Feb 2026 706th Macweese 525 178 405ms 3 Aug 2025 707th galloj 🇨🇿 522 112 19ms 4 Oct 2024 708th NotEvenIndian 522 124 14ms 22 Oct 2024 708th ridingqwerty 🇺🇸 522 124 20ms 16 Jan 2025 708th CommandLeo 🇮🇹 522 124 11ms 5 Oct 2025 711th snoozingnewt 🇨🇦 522 213 138ms 2 Nov 2025 712th bac0id 519 180 388ms 9 Jan 2025 713th sidok 517 109 235ms 13 Nov 2024 714th bnic24 517 125 18ms 3 Oct 2024 714th adoxography 517 125 10ms 22 Oct 2024 714th lelbal 517 125 10ms 14 Oct 2025 717th dokutan 517 143 210ms 19 Oct 2024 718th nephila-nacrea 🇬🇧 513 77 4ms 2 Oct 2024 719th emgordon154 513 156 8ms 13 Dec 2024 720th KatieLG 🇬🇧 512 146 9ms 2 Oct 2024 First Prev 641–720 of 1,003 Next Last