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 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 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 Calendar 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 Multitap Input NFA Simulator 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Calendar 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 Multitap Input NFA Simulator 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 525th starfihs 609 106 10ms 2 Oct 2024 525th rschwa6308 🇺🇸 609 106 16ms 28 Oct 2024 525th snydej 609 106 17ms 21 Nov 2024 525th andrewjc2000 609 106 15ms 17 Jul 2025 525th travisdoesmath 609 106 16ms 7 Sep 2025 531st Seanharrs 609 117 411ms 15 Nov 2024 532nd kaascevich 609 134 114ms 9 Jul 2025 533rd bac0id 609 141 381ms 10 Jan 2025 534th daveberlin 607 106 9ms 27 Jun 2025 535th Shanethegamer 🇺🇸 606 154 145ms 3 Oct 2024 536th MeWhenI 🇻🇦 605 73 2ms 2 Oct 2024 537th albanian-laundromat 605 315 13ms 10 days ago 538th alemelis 604 93 467ms 1 Oct 2024 539th commandblockguy 🇺🇸 604 107 16ms 7 Oct 2024 539th zbreit 🇺🇸 604 107 18ms 29 Oct 2024 539th StardustGogeta 604 107 16ms 30 Oct 2024 539th ZakkkkAttackkkk 🇵🇭 604 107 15ms 8 Feb 2025 539th InigoK 🇺🇸 604 107 16ms 22 Sep 2025 544th roguh 🇬🇹 601 117 2ms 13 Oct 2024 544th iczelia 🇩🇪 601 117 3ms 25 Sep 2025 546th neihousaigaai 598 108 16ms 4 Oct 2024 546th StefanHabel 🇨🇦 598 108 16ms 23 Jan 2025 546th CaedenHarper 🇨🇦 598 108 16ms 22 Jul 2025 549th MeWhenI 🇻🇦 597 98 8ms 1 Oct 2024 550th dokutan 596 116 2ms 16 days ago 551st arcpolaris 593 120 347ms 28 Jan 2025 552nd SirBogman 🇺🇸 591 64 122ms 11 Jul 2025 553rd bac0id 591 119 2ms 10 Jan 2025 554th JunkIce 587 98 413ms 3 Dec 2024 554th commandblockguy 🇺🇸 587 98 476ms 1 Sep 2025 556th cros107 🇦🇺 587 110 17ms 1 Jan 2025 556th guilhem-roy 🇫🇷 587 110 16ms 29 May 2025 558th DialFrost 🇸🇬 586 67 9ms 25 Jan 2025 559th Schmitt-Very-Cool 586 159 339ms 26 Sep 2025 560th gigaprofisi 🇺🇸 585 110 10ms 11 Aug 2025 561st dokutan 584 174 5ms 21 Feb 2025 562nd Trip-kun 583 136 2ms 5 Oct 2024 563rd mousetail 🇳🇱 582 111 16ms 6 Oct 2024 564th Mabeloid 🇳🇴 581 121 2ms 21 Oct 2025 565th michelebastione 🇮🇹 579 123 375ms 26 Aug 2025 566th MeWhenI 🇻🇦 578 111 79ms 2 Oct 2024 567th OllieBoyne 🇬🇧 577 112 25ms 17 Oct 2024 567th WillConker 577 112 10ms 22 Oct 2024 567th maxgodfrey2004 🇨🇦 577 112 9ms 4 Jan 2025 570th dokutan 576 102 795ms 30 Aug 2025 571st MeWhenI 🇻🇦 576 331 15ms 2 Oct 2024 572nd CaedenHarper 🇨🇦 575 100 477ms 22 Jul 2025 573rd 823126 575 112 8ms 13 Nov 2024 573rd snoozingnewt 🇨🇦 575 112 9ms 2 Nov 2025 575th albanian-laundromat 574 77 2ms 3 Nov 2025 576th KatieLG 🇬🇧 574 99 1,081ms 1 Oct 2024 577th MeWhenI 🇻🇦 569 164 209ms 6 Oct 2024 578th blaztoma 🇱🇹 566 114 17ms 25 Sep 2025 579th CaedenHarper 🇨🇦 565 104 738ms 11 days ago 580th jipsong 🇩🇪 562 115 16ms 12 May 2025 581st aliakseikalosha 561 127 401ms 10 Oct 2024 582nd rowechenzhong 557 116 9ms 17 Oct 2024 583rd madex 🇩🇪 555 116 9ms 1 Oct 2024 584th FortuiteMan 🇫🇷 554 270 37ms 13 days ago 585th MeWhenI 🇻🇦 554 290 9ms 2 Oct 2024 586th JDiLenarda 🇫🇷 553 165 1,278ms 1 Oct 2024 587th dtbao20 🇻🇳 552 117 16ms 1 Oct 2024 587th Pyroan 552 117 16ms 22 Feb 2025 587th vgamula 🇺🇦 552 117 16ms 5 Aug 2025 587th FortuiteMan 🇫🇷 552 117 21ms 4 days ago 591st snoozingnewt 🇨🇦 552 148 114ms 15 days ago 592nd edsrzf 🇳🇿 551 135 6ms 27 Feb 2025 593rd msbranicky 550 185 4ms 20 Jan 2025 594th mousetail 🇳🇱 549 128 2ms 3 Oct 2024 595th ethanlally 549 170 330ms 16 days ago 596th gpikmddk 548 130 367ms 30 Oct 2025 597th elgan65536 547 118 10ms 2 Oct 2024 597th logvp 547 118 16ms 6 Oct 2024 597th ahmetdemirag 🇨🇾 547 118 13ms 6 Feb 2025 597th dirckvdende 547 118 15ms 10 Jul 2025 First Prev 526–600 of 835 Next Last