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 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 Multitap Input 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 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 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 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 Multitap Input 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 641st galloj 🇨🇿 522 112 19ms 4 Oct 2024 642nd NotEvenIndian 521 124 10ms 22 Oct 2024 642nd ridingqwerty 🇺🇸 521 124 16ms 16 Jan 2025 642nd CommandLeo 🇮🇹 521 124 9ms 5 Oct 2025 645th snoozingnewt 🇨🇦 520 213 138ms 2 Nov 2025 646th bac0id 518 180 370ms 9 Jan 2025 647th bnic24 517 125 16ms 3 Oct 2024 647th adoxography 517 125 11ms 22 Oct 2024 647th lelbal 517 125 9ms 14 Oct 2025 650th sidok 515 109 239ms 13 Nov 2024 651st dokutan 514 143 155ms 19 Oct 2024 652nd emgordon154 511 156 9ms 13 Dec 2024 653rd nephila-nacrea 🇬🇧 510 77 3ms 2 Oct 2024 654th KatieLG 🇬🇧 510 140 381ms 1 Oct 2024 655th yoshykai 510 183 364ms 12 Apr 2025 656th CatsAreFluffy 509 127 15ms 30 Oct 2024 656th WillowWispy 509 127 10ms 25 May 2025 658th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 659th Chinay-Domitrix 🇺🇸 508 131 4,591ms 30 Mar 2025 660th snoozingnewt 🇨🇦 503 142 407ms 2 Nov 2025 661st madex 🇩🇪 501 129 16ms 2 Oct 2024 661st RedzGoose 🇦🇺 501 129 13ms 15 Oct 2024 661st calebaitken 501 129 9ms 11 Apr 2025 661st rollershutter 501 129 17ms 20 Nov 2025 665th msbranicky 501 138 3ms 3 Oct 2024 666th blaztoma 🇱🇹 500 154 125ms 28 Nov 2025 667th MeWhenI 🇻🇦 499 149 55ms 4 Oct 2024 668th janAkali 🇷🇺 499 167 357ms 8 Oct 2024 669th Europe2048 497 130 9ms 2 Oct 2024 669th nstearns96 🇬🇧 497 130 16ms 2 Oct 2024 669th Stockoh 🇫🇷 497 130 16ms 4 Jul 2025 672nd inverseLorentz 🇦🇺 493 131 9ms 7 Oct 2024 672nd sciencejiho 493 131 16ms 11 Feb 2025 672nd Jaydosu 493 131 9ms 11 Apr 2025 672nd Emutis 🇱🇹 493 131 9ms 11 Nov 2025 676th HumanoidCPU 492 145 394ms 5 Oct 2024 677th CarterStroik 492 161 2ms 19 Nov 2025 678th TheRealOhead 🇺🇸 491 131 14ms 1 Oct 2024 679th snoozingnewt 🇨🇦 490 150 154ms 2 Nov 2025 680th h-hh-hhh 🇺🇦 488 177 65ms 2 Nov 2024 681st jlangvand 487 141 2ms 15 Oct 2024 681st HumanoidCPU 487 141 1ms 7 Mar 2025 683rd snoozingnewt 🇨🇦 487 249 26ms 2 Nov 2025 684th snoozingnewt 🇨🇦 486 117 904ms 2 Nov 2025 685th Mabeloid 🇳🇴 486 133 9ms 2 Oct 2024 686th snoozingnewt 🇨🇦 482 173 332ms 2 Nov 2025 687th alphafalfa 480 92 2ms 8 Nov 2024 688th mitzal 480 180 66ms 9 Feb 2025 689th KatieLG 🇬🇧 479 120 413ms 1 Oct 2024 690th MiffOttah 476 150 423ms 6 Oct 2024 690th mwarvik 🇳🇴 476 150 421ms 7 days ago 692nd sciencedjinn 475 136 9ms 8 Nov 2024 692nd ihatethefrench 475 136 16ms 4 Jan 2025 692nd Florian-Mt 475 136 19ms 5 Dec 2025 695th kurkale6ka 472 137 21ms 16 Oct 2024 695th 4ndyJ 🇬🇧 472 137 10ms 14 Nov 2024 695th Mikey-Beep 🇬🇧 472 137 16ms 6 Aug 2025 695th wobblybits 472 137 15ms 17 Aug 2025 699th luca1339 471 198 371ms 4 Nov 2024 700th iczelia 🇩🇪 470 94 2ms 23 Sep 2025 701st ejini6969 469 102 37ms 14 Jun 2025 702nd h-hh-hhh 🇺🇦 467 147 2ms 2 Nov 2024 703rd snoozingnewt 🇨🇦 466 200 228ms 2 Nov 2025 704th scpchicken 🇵🇼 465 139 16ms 6 Oct 2024 705th snoozingnewt 🇨🇦 464 121 222ms 27 Nov 2025 706th Jacob385 462 202 358ms 2 Oct 2024 707th NanduBC 461 140 10ms 1 Oct 2024 707th jmerle 🇳🇱 461 140 10ms 10 Jan 2025 707th RobertHoeh 461 140 9ms 3 Mar 2025 707th smilesformiles3 461 140 15ms 12 Jun 2025 707th artem-aramma 461 140 18ms 18 Jun 2025 707th Andrey2001 461 140 10ms 27 Nov 2025 713th snoozingnewt 🇨🇦 460 96 2ms 2 Nov 2025 714th madex 🇩🇪 460 104 39ms 2 Oct 2024 715th FranklinJiaChen 458 141 13ms 2 Oct 2024 716th TheZwierzLF 🇵🇱 455 105 37ms 31 mins ago 717th brimstonetrader 455 142 10ms 17 Oct 2024 717th codewrite 🇬🇧 455 142 11ms 5 May 2025 717th RobGLambert 455 142 16ms 8 Jun 2025 717th GodlyProgrammer1 455 142 16ms 22 Nov 2025 First Prev 641–720 of 853 Next Last