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 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 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 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 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 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 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 deancureton 532 121 9ms 30 Dec 2024 642nd chartung17 530 122 10ms 24 Mar 2025 643rd msbranicky 530 126 3,008ms 9 Jan 2025 644th msbranicky 525 123 17ms 3 Oct 2024 644th bobbysq 525 123 10ms 5 Oct 2024 644th wuzekai518 525 123 10ms 8 Oct 2024 647th Macweese 525 178 406ms 3 Aug 2025 648th galloj 🇨🇿 522 112 19ms 4 Oct 2024 649th NotEvenIndian 521 124 10ms 22 Oct 2024 649th ridingqwerty 🇺🇸 521 124 16ms 16 Jan 2025 649th CommandLeo 🇮🇹 521 124 9ms 5 Oct 2025 652nd snoozingnewt 🇨🇦 520 213 138ms 2 Nov 2025 653rd bac0id 519 180 388ms 9 Jan 2025 654th bnic24 517 125 16ms 3 Oct 2024 654th adoxography 517 125 11ms 22 Oct 2024 654th lelbal 517 125 9ms 14 Oct 2025 657th sidok 515 109 239ms 13 Nov 2024 658th dokutan 514 143 154ms 19 Oct 2024 659th nephila-nacrea 🇬🇧 511 77 3ms 2 Oct 2024 660th emgordon154 511 156 8ms 13 Dec 2024 661st KatieLG 🇬🇧 510 140 440ms 1 Oct 2024 662nd yoshykai 510 183 403ms 12 Apr 2025 663rd CatsAreFluffy 509 127 15ms 30 Oct 2024 663rd WillowWispy 509 127 10ms 25 May 2025 665th Chinay-Domitrix 🇺🇸 509 131 4,351ms 30 Mar 2025 666th KatieLG 🇬🇧 509 146 8ms 2 Oct 2024 667th snoozingnewt 🇨🇦 503 142 463ms 2 Nov 2025 668th madex 🇩🇪 501 129 16ms 2 Oct 2024 668th RedzGoose 🇦🇺 501 129 13ms 15 Oct 2024 668th calebaitken 501 129 9ms 11 Apr 2025 668th rollershutter 501 129 17ms 20 Nov 2025 672nd msbranicky 501 138 3ms 3 Oct 2024 673rd blaztoma 🇱🇹 500 154 109ms 28 Nov 2025 674th MeWhenI 🇻🇦 499 149 56ms 4 Oct 2024 675th janAkali 🇷🇺 499 167 357ms 8 Oct 2024 676th Europe2048 497 130 9ms 2 Oct 2024 676th nstearns96 🇬🇧 497 130 16ms 2 Oct 2024 676th Stockoh 🇫🇷 497 130 16ms 4 Jul 2025 679th inverseLorentz 🇦🇺 493 131 9ms 7 Oct 2024 679th sciencejiho 493 131 16ms 11 Feb 2025 679th Jaydosu 493 131 9ms 11 Apr 2025 679th Emutis 🇱🇹 493 131 9ms 11 Nov 2025 683rd HumanoidCPU 492 145 479ms 5 Oct 2024 684th CarterStroik 492 161 2ms 19 Nov 2025 685th TheRealOhead 🇺🇸 491 131 10ms 1 Oct 2024 686th snoozingnewt 🇨🇦 490 150 154ms 2 Nov 2025 687th h-hh-hhh 🇺🇦 489 177 59ms 2 Nov 2024 688th jlangvand 487 141 2ms 15 Oct 2024 688th HumanoidCPU 487 141 1ms 7 Mar 2025 690th snoozingnewt 🇨🇦 487 249 26ms 2 Nov 2025 691st snoozingnewt 🇨🇦 486 117 1,338ms 2 Nov 2025 692nd Mabeloid 🇳🇴 486 133 9ms 2 Oct 2024 693rd snoozingnewt 🇨🇦 482 173 332ms 2 Nov 2025 694th mitzal 481 180 61ms 9 Feb 2025 695th KatieLG 🇬🇧 479 120 413ms 1 Oct 2024 696th MiffOttah 476 150 457ms 6 Oct 2024 696th mwarvik 🇳🇴 476 150 450ms 1 Jan 2026 698th sciencedjinn 475 136 9ms 8 Nov 2024 698th ihatethefrench 475 136 16ms 4 Jan 2025 698th Florian-Mt 475 136 19ms 5 Dec 2025 701st alphafalfa 472 92 2ms 8 Nov 2024 702nd kurkale6ka 472 137 21ms 16 Oct 2024 702nd 4ndyJ 🇬🇧 472 137 10ms 14 Nov 2024 702nd Mikey-Beep 🇬🇧 472 137 16ms 6 Aug 2025 702nd wobblybits 472 137 15ms 17 Aug 2025 702nd Andrey2001 472 137 11ms 2 days ago 707th luca1339 472 198 425ms 4 Nov 2024 708th ejini6969 469 102 37ms 14 Jun 2025 709th h-hh-hhh 🇺🇦 467 147 2ms 2 Nov 2024 709th isaiah0311 🇺🇸 467 147 2ms 2 days ago 711th snoozingnewt 🇨🇦 466 200 216ms 2 Nov 2025 712th scpchicken 🇵🇼 465 139 16ms 6 Oct 2024 712th tomh1012 465 139 17ms 18 days ago 714th snoozingnewt 🇨🇦 464 121 197ms 27 Nov 2025 715th iczelia 🇩🇪 462 94 2ms 23 Sep 2025 716th Jacob385 462 202 418ms 2 Oct 2024 717th NanduBC 461 140 10ms 1 Oct 2024 717th jmerle 🇳🇱 461 140 10ms 10 Jan 2025 717th RobertHoeh 461 140 9ms 3 Mar 2025 717th smilesformiles3 461 140 15ms 12 Jun 2025 First Prev 641–720 of 868 Next Last