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 598th dirckvdende 547 118 15ms 10 Jul 2025 602nd emgordon154 546 52 2ms 3 Nov 2024 603rd zakariamouhid 545 118 9ms 1 Oct 2024 603rd JOrE20 🇺🇸 545 118 9ms 5 days ago 605th xyangst 545 171 171ms 1 Oct 2024 605th kmathis22 545 171 344ms 18 days ago 607th najs91 544 131 343ms 15 Oct 2024 607th bac0id 544 131 370ms 9 Jan 2025 607th CaedenHarper 🇨🇦 544 131 340ms 17 Oct 2025 610th jtaxen 543 119 17ms 21 Oct 2024 610th psbpsbp 543 119 11ms 19 Dec 2024 610th klixel 🇨🇦 543 119 10ms 9 Apr 2025 610th vhoulbreque 🇫🇷 543 119 11ms 15 days ago 614th eranws 541 119 10ms 23 Dec 2024 615th Sciman101 539 147 2ms 26 Mar 2025 616th TaserTheFox 🇺🇸 538 120 17ms 8 Oct 2024 616th yokasuretsu 538 120 11ms 26 Jan 2025 616th Troon 538 120 10ms 17 Feb 2025 619th mousetail 🇳🇱 536 128 2ms 3 Oct 2024 620th BREMAUCY 🇫🇷 534 121 17ms 18 Jul 2025 621st msbranicky 533 175 162ms 13 Dec 2024 622nd deancureton 532 121 9ms 30 Dec 2024 623rd chartung17 529 122 9ms 24 Mar 2025 624th msbranicky 527 126 2,869ms 9 Jan 2025 625th msbranicky 525 123 17ms 3 Oct 2024 625th bobbysq 525 123 10ms 5 Oct 2024 625th wuzekai518 525 123 10ms 8 Oct 2024 628th Macweese 524 178 308ms 3 Aug 2025 629th galloj 🇨🇿 522 112 19ms 4 Oct 2024 630th NotEvenIndian 521 124 10ms 22 Oct 2024 630th ridingqwerty 🇺🇸 521 124 16ms 16 Jan 2025 630th CommandLeo 🇮🇹 521 124 10ms 5 Oct 2025 633rd blaztoma 🇱🇹 519 154 107ms 8 days ago 634th snoozingnewt 🇨🇦 519 213 119ms 2 Nov 2025 635th bac0id 518 180 306ms 9 Jan 2025 636th bnic24 517 125 16ms 3 Oct 2024 636th adoxography 517 125 10ms 22 Oct 2024 636th lelbal 517 125 10ms 14 Oct 2025 639th sidok 515 109 247ms 13 Nov 2024 640th dokutan 514 143 128ms 19 Oct 2024 641st emgordon154 511 156 8ms 13 Dec 2024 642nd nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 643rd yoshykai 510 183 309ms 12 Apr 2025 644th CatsAreFluffy 509 127 17ms 30 Oct 2024 644th WillowWispy 509 127 10ms 25 May 2025 646th KatieLG 🇬🇧 509 140 358ms 1 Oct 2024 647th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 648th Chinay-Domitrix 🇺🇸 507 131 2,930ms 30 Mar 2025 649th Lv0Sys 🇵🇱 505 128 16ms 15 Jun 2025 650th madex 🇩🇪 501 129 16ms 2 Oct 2024 650th RedzGoose 🇦🇺 501 129 10ms 15 Oct 2024 650th calebaitken 501 129 9ms 11 Apr 2025 650th rollershutter 501 129 17ms 17 days ago 654th msbranicky 501 138 3ms 3 Oct 2024 655th snoozingnewt 🇨🇦 501 142 379ms 2 Nov 2025 656th MeWhenI 🇻🇦 499 149 55ms 4 Oct 2024 657th janAkali 🇷🇺 499 167 335ms 8 Oct 2024 658th Europe2048 497 130 9ms 2 Oct 2024 658th nstearns96 🇬🇧 497 130 15ms 2 Oct 2024 658th Stockoh 🇫🇷 497 130 15ms 4 Jul 2025 661st inverseLorentz 🇦🇺 493 131 10ms 7 Oct 2024 661st sciencejiho 493 131 17ms 11 Feb 2025 661st Jaydosu 493 131 10ms 11 Apr 2025 661st Emutis 🇱🇹 493 131 10ms 25 days ago 665th StronkCheese2 493 161 2ms 18 days ago 666th TheRealOhead 🇺🇸 491 131 9ms 1 Oct 2024 667th HumanoidCPU 491 145 388ms 5 Oct 2024 668th snoozingnewt 🇨🇦 490 150 135ms 2 Nov 2025 669th jlangvand 487 141 1ms 15 Oct 2024 669th HumanoidCPU 487 141 2ms 7 Mar 2025 671st snoozingnewt 🇨🇦 487 249 27ms 2 Nov 2025 672nd snoozingnewt 🇨🇦 486 117 940ms 2 Nov 2025 673rd Mabeloid 🇳🇴 486 133 10ms 2 Oct 2024 674th h-hh-hhh 🇺🇦 485 177 59ms 2 Nov 2024 675th snoozingnewt 🇨🇦 482 173 353ms 2 Nov 2025 First Prev 601–675 of 838 Next Last