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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 376th rzv-me 711 95 4ms 5 Oct 2024 377th snyderek 🇺🇸 710 121 70ms 1 Oct 2024 378th 5cw 🇺🇸 709 91 15ms 1 Oct 2024 378th stefangimmillaro 709 91 22ms 13 Oct 2024 378th dokutan 709 91 11ms 19 Oct 2024 378th GrayJoKing 🇦🇺 709 91 20ms 2 Jul 2025 382nd Natanaelel 🇸🇪 707 55 42ms 1 Mar 2025 383rd GrayJoKing 🇦🇺 707 82 121ms 1 Oct 2024 384th Shanethegamer 🇺🇸 706 118 332ms 2 Oct 2024 385th DialFrost 🇸🇬 705 132 205ms 8 Apr 2025 386th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 387th cbrt-x 703 157 197ms 1 Oct 2024 388th janlelis 702 68 37ms 1 Oct 2024 388th tatzyr 🇯🇵 702 68 39ms 23 Dec 2024 390th emgordon154 702 76 6ms 7 Jun 2025 391st Shanethegamer 🇺🇸 702 92 18ms 3 Oct 2024 391st error256 702 92 26ms 7 Oct 2024 391st thatbirdguythatuknownot 702 92 17ms 14 Oct 2024 394th Alex-x90 🇺🇸 702 100 2ms 1 Oct 2024 395th sean-niemann 🇺🇸 700 82 450ms 23 Dec 2024 396th mousetail 🇳🇱 700 133 147ms 3 Oct 2024 397th LukeBridges 🇬🇧 699 92 10ms 3 Oct 2024 398th BlankSpruce 698 123 487ms 1 Oct 2024 399th emgordon154 695 101 2ms 25 Nov 2024 400th emgordon154 695 134 203ms 25 Feb 2025 401st tobeannouncd 695 159 162ms 13 Dec 2024 402nd Bulmenisaurus 694 93 19ms 6 Oct 2024 402nd lynn 694 93 17ms 8 Jan 2025 402nd RaBa21 🇭🇺 694 93 17ms 19 Jul 2025 405th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 406th xyangst 692 93 10ms 1 Oct 2024 406th Salutations45 692 93 12ms 17 Nov 2024 406th strattonwhisler 692 93 10ms 26 Mar 2025 409th Alex-x90 🇺🇸 692 124 450ms 1 Oct 2024 409th Herbert00709 🇵🇱 692 124 66ms 14 Jun 2025 411th Shanethegamer 🇺🇸 691 83 508ms 5 Oct 2024 412th pardouin 🇫🇷 688 57 5ms 3 Oct 2024 413th NickTheEASDude 🇺🇸 688 115 3ms 17 Dec 2024 414th DialFrost 🇸🇬 687 94 21ms 1 Oct 2024 415th dokutan 687 116 8ms 19 Oct 2024 416th MeWhenI 🇻🇦 686 68 254ms 2 Oct 2024 417th error256 685 104 386ms 14 Oct 2024 418th Lv0Sys 🇵🇱 684 94 11ms 15 Jun 2025 418th XenThe 🇬🇧 684 94 10ms 7 Jul 2025 420th ovs-code 🇩🇪 683 84 415ms 3 Oct 2024 420th snoozingnewt 🇺🇸 683 84 346ms 43 hours ago 422nd KatieLG 🇬🇧 682 70 41ms 2 Oct 2025 423rd aDwarfNamedUrist 682 162 183ms 1 Sep 2025 424th madex 🇩🇪 681 103 2ms 2 Oct 2024 425th Shanethegamer 🇺🇸 679 65 2ms 1 Oct 2024 426th MeWhenI 🇻🇦 678 108 179ms 2 Oct 2024 427th the-zammers 678 163 140ms 1 Dec 2024 428th Shanethegamer 🇺🇸 677 172 42ms 2 Oct 2024 429th plcc0 676 37 70ms 6 Apr 2025 430th snoozingnewt 🇺🇸 676 95 75ms 12 days ago 431st BlankSpruce 675 104 2ms 1 Oct 2024 432nd KasperKivimaeki 🇫🇮 672 96 43ms 1 Jul 2025 432nd MeWhenI 🇻🇦 672 96 18ms 30 Jul 2025 434th jerrandolph 672 177 269ms 25 Sep 2025 435th edsrzf 🇳🇿 671 99 2,289ms 5 Jul 2025 436th tailorspy 671 128 417ms 4 Oct 2024 437th HumanoidCPU 670 96 10ms 7 Mar 2025 438th error256 669 101 4ms 24 Oct 2024 439th MeWhenI 🇻🇦 669 174 39ms 13 Feb 2025 440th Herbert00709 🇵🇱 668 105 2ms 14 Jun 2025 441st Babafaba 667 86 426ms 19 days ago 442nd dbut2 🇦🇺 665 179 283ms 31 Oct 2024 443rd AlephSquirrel 664 146 4ms 14 May 2025 444th two-bad 🇬🇧 663 97 9ms 2 Oct 2024 444th LordSir101 663 97 11ms 10 Aug 2025 446th CaedenHarper 🇨🇦 663 140 529ms 3 Oct 2025 447th rniii 662 106 2ms 2 Oct 2024 447th gastropner 662 106 2ms 11 Feb 2025 449th snoozingnewt 🇺🇸 661 180 242ms 38 hours ago 450th 4hg 🇺🇸 659 59 34ms 5 Oct 2024 First Prev 376–450 of 806 Next Last