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 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 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 600th JOrE20 🇺🇸 545 118 9ms 13 hours ago 602nd xyangst 545 171 171ms 1 Oct 2024 602nd kmathis22 545 171 344ms 12 days ago 604th najs91 544 131 343ms 15 Oct 2024 604th bac0id 544 131 370ms 9 Jan 2025 604th CaedenHarper 🇨🇦 544 131 340ms 17 Oct 2025 607th jtaxen 543 119 16ms 21 Oct 2024 607th psbpsbp 543 119 10ms 19 Dec 2024 607th klixel 🇨🇦 543 119 10ms 9 Apr 2025 607th vhoulbreque 🇫🇷 543 119 10ms 10 days ago 611th eranws 541 119 9ms 23 Dec 2024 612th Sciman101 539 147 2ms 26 Mar 2025 613th TaserTheFox 🇺🇸 538 120 20ms 8 Oct 2024 613th yokasuretsu 538 120 11ms 26 Jan 2025 613th Troon 538 120 10ms 17 Feb 2025 616th BREMAUCY 🇫🇷 534 121 16ms 18 Jul 2025 617th msbranicky 533 175 162ms 13 Dec 2024 618th deancureton 532 121 9ms 30 Dec 2024 619th chartung17 529 122 10ms 24 Mar 2025 620th msbranicky 527 126 2,869ms 9 Jan 2025 621st msbranicky 525 123 15ms 3 Oct 2024 621st bobbysq 525 123 9ms 5 Oct 2024 621st wuzekai518 525 123 9ms 8 Oct 2024 624th Macweese 524 178 308ms 3 Aug 2025 625th galloj 🇨🇿 522 112 27ms 4 Oct 2024 626th NotEvenIndian 521 124 10ms 22 Oct 2024 626th ridingqwerty 🇺🇸 521 124 16ms 16 Jan 2025 626th CommandLeo 🇮🇹 521 124 10ms 5 Oct 2025 629th blaztoma 🇱🇹 519 154 107ms 3 days ago 630th snoozingnewt 🇺🇸 519 213 119ms 2 Nov 2025 631st bac0id 518 180 306ms 9 Jan 2025 632nd bnic24 517 125 17ms 3 Oct 2024 632nd adoxography 517 125 10ms 22 Oct 2024 632nd lelbal 517 125 10ms 14 Oct 2025 635th sidok 515 109 247ms 13 Nov 2024 636th dokutan 512 143 128ms 19 Oct 2024 637th emgordon154 511 156 8ms 13 Dec 2024 638th nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 639th yoshykai 510 183 309ms 12 Apr 2025 640th KatieLG 🇬🇧 509 140 358ms 1 Oct 2024 641st KatieLG 🇬🇧 509 146 7ms 2 Oct 2024 642nd CatsAreFluffy 508 127 16ms 30 Oct 2024 642nd WillowWispy 508 127 9ms 25 May 2025 644th Chinay-Domitrix 🇺🇸 507 131 2,930ms 30 Mar 2025 645th Lv0Sys 🇵🇱 504 128 18ms 15 Jun 2025 646th madex 🇩🇪 501 129 16ms 2 Oct 2024 646th RedzGoose 🇦🇺 501 129 10ms 15 Oct 2024 646th calebaitken 501 129 9ms 11 Apr 2025 646th rollershutter 501 129 16ms 11 days ago 650th msbranicky 501 138 3ms 3 Oct 2024 651st snoozingnewt 🇺🇸 501 142 379ms 2 Nov 2025 652nd jlangvand 499 141 1ms 15 Oct 2024 652nd HumanoidCPU 499 141 2ms 7 Mar 2025 654th MeWhenI 🇻🇦 499 149 43ms 4 Oct 2024 655th janAkali 🇷🇺 499 167 335ms 8 Oct 2024 656th Europe2048 497 130 10ms 2 Oct 2024 656th nstearns96 🇬🇧 497 130 16ms 2 Oct 2024 656th Stockoh 🇫🇷 497 130 16ms 4 Jul 2025 659th inverseLorentz 🇦🇺 493 131 9ms 7 Oct 2024 659th sciencejiho 493 131 16ms 11 Feb 2025 659th Jaydosu 493 131 9ms 11 Apr 2025 659th Emutis 🇱🇹 493 131 10ms 20 days ago 663rd StronkCheese2 493 161 2ms 13 days ago 664th TheRealOhead 🇺🇸 491 131 9ms 1 Oct 2024 665th HumanoidCPU 491 145 388ms 5 Oct 2024 666th snoozingnewt 🇺🇸 488 150 135ms 2 Nov 2025 667th snoozingnewt 🇺🇸 486 117 940ms 2 Nov 2025 668th Mabeloid 🇳🇴 486 133 10ms 2 Oct 2024 669th h-hh-hhh 🇺🇦 485 177 58ms 2 Nov 2024 670th snoozingnewt 🇺🇸 483 249 27ms 2 Nov 2025 671st snoozingnewt 🇺🇸 482 173 353ms 2 Nov 2025 672nd alphafalfa 480 92 2ms 8 Nov 2024 673rd KatieLG 🇬🇧 479 120 585ms 1 Oct 2024 674th h-hh-hhh 🇺🇦 478 147 2ms 2 Nov 2024 675th ravnskjaer 🇩🇰 478 195 306ms 20 Dec 2024 First Prev 601–675 of 831 Next Last