Card Number Validation in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 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 Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 375th stefangimmillaro 709 91 22ms 13 Oct 2024 375th dokutan 709 91 11ms 19 Oct 2024 375th GrayJoKing 🇦🇺 709 91 20ms 2 Jul 2025 375th snoozingnewt 🇺🇸 709 91 11ms 15 days ago 380th Natanaelel 🇸🇪 707 55 42ms 1 Mar 2025 381st GrayJoKing 🇦🇺 707 82 174ms 1 Oct 2024 382nd MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 383rd DialFrost 🇸🇬 704 132 211ms 8 Apr 2025 384th Shanethegamer 🇺🇸 703 118 417ms 2 Oct 2024 385th janlelis 702 68 37ms 1 Oct 2024 385th tatzyr 🇯🇵 702 68 39ms 23 Dec 2024 387th emgordon154 702 76 6ms 7 Jun 2025 388th Shanethegamer 🇺🇸 702 92 18ms 3 Oct 2024 388th error256 702 92 26ms 7 Oct 2024 388th thatbirdguythatuknownot 702 92 17ms 14 Oct 2024 391st Alex-x90 🇺🇸 701 100 2ms 1 Oct 2024 392nd cbrt-x 701 157 197ms 1 Oct 2024 393rd sean-niemann 🇺🇸 700 82 450ms 23 Dec 2024 394th LukeBridges 🇬🇧 699 92 10ms 3 Oct 2024 395th mousetail 🇳🇱 699 133 167ms 3 Oct 2024 396th BlankSpruce 698 123 487ms 1 Oct 2024 397th Bulmenisaurus 694 93 19ms 6 Oct 2024 397th lynn 694 93 17ms 8 Jan 2025 397th RaBa21 🇭🇺 694 93 17ms 19 Jul 2025 400th emgordon154 694 101 2ms 25 Nov 2024 401st Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 402nd emgordon154 693 134 210ms 25 Feb 2025 403rd xyangst 692 93 10ms 1 Oct 2024 403rd Salutations45 692 93 12ms 17 Nov 2024 403rd strattonwhisler 692 93 10ms 26 Mar 2025 406th Alex-x90 🇺🇸 692 124 450ms 1 Oct 2024 406th Herbert00709 🇵🇱 692 124 66ms 14 Jun 2025 408th albanian-laundromat 692 147 2ms 30 Jun 2025 409th tobeannouncd 692 159 162ms 13 Dec 2024 410th Shanethegamer 🇺🇸 691 83 508ms 5 Oct 2024 411th pardouin 🇫🇷 688 57 5ms 3 Oct 2024 412th DialFrost 🇸🇬 687 94 21ms 1 Oct 2024 413th NickTheEASDude 🇺🇸 687 115 3ms 17 Dec 2024 414th dokutan 687 116 8ms 19 Oct 2024 415th MeWhenI 🇻🇦 686 68 254ms 2 Oct 2024 416th Lv0Sys 🇵🇱 684 94 11ms 15 Jun 2025 416th XenThe 🇬🇧 684 94 10ms 7 Jul 2025 418th ovs-code 🇩🇪 683 84 415ms 3 Oct 2024 419th error256 683 104 386ms 14 Oct 2024 420th KatieLG 🇬🇧 682 70 41ms 20 days ago 421st madex 🇩🇪 681 103 2ms 2 Oct 2024 422nd aDwarfNamedUrist 679 162 183ms 1 Sep 2025 423rd Shanethegamer 🇺🇸 678 65 2ms 1 Oct 2024 424th plcc0 676 37 70ms 6 Apr 2025 425th the-zammers 675 163 140ms 1 Dec 2024 426th BlankSpruce 674 104 2ms 1 Oct 2024 427th MeWhenI 🇻🇦 673 108 179ms 2 Oct 2024 428th KasperKivimaeki 🇫🇮 672 96 43ms 1 Jul 2025 428th MeWhenI 🇻🇦 672 96 18ms 30 Jul 2025 430th Shanethegamer 🇺🇸 672 172 42ms 2 Oct 2024 431st edsrzf 🇳🇿 671 99 2,635ms 5 Jul 2025 432nd tailorspy 671 128 417ms 4 Oct 2024 433rd jerrandolph 671 177 269ms 27 days ago 434th HumanoidCPU 670 96 10ms 7 Mar 2025 435th error256 668 101 5ms 24 Oct 2024 436th Herbert00709 🇵🇱 668 105 2ms 14 Jun 2025 437th Babafaba 667 86 426ms 7 days ago 438th AlephSquirrel 664 146 4ms 14 May 2025 439th MeWhenI 🇻🇦 664 174 46ms 13 Feb 2025 440th two-bad 🇬🇧 663 97 9ms 2 Oct 2024 440th LordSir101 663 97 11ms 10 Aug 2025 442nd dbut2 🇦🇺 663 179 283ms 31 Oct 2024 443rd CaedenHarper 🇨🇦 662 140 390ms 19 days ago 444th rniii 661 106 2ms 2 Oct 2024 444th gastropner 661 106 2ms 11 Feb 2025 446th 4hg 🇺🇸 659 59 34ms 5 Oct 2024 447th snoozingnewt 🇺🇸 659 87 425ms 15 days ago 448th MeWhenI 🇻🇦 659 88 164ms 2 Oct 2024 448th Shanethegamer 🇺🇸 659 88 174ms 5 Oct 2024 450th GolfingSuccess 🇬🇷 659 98 23ms 5 Oct 2024 First Prev 376–450 of 780 Next Last