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 5cw 🇺🇸 709 91 15ms 1 Oct 2024 376th stefangimmillaro 709 91 22ms 13 Oct 2024 376th dokutan 709 91 11ms 19 Oct 2024 376th GrayJoKing 🇦🇺 709 91 20ms 2 Jul 2025 380th Natanaelel 🇸🇪 707 55 42ms 1 Mar 2025 381st GrayJoKing 🇦🇺 707 82 174ms 1 Oct 2024 382nd Shanethegamer 🇺🇸 706 118 332ms 2 Oct 2024 383rd DialFrost 🇸🇬 705 132 205ms 8 Apr 2025 384th MeWhenI 🇻🇦 704 115 435ms 5 Oct 2024 385th cbrt-x 703 157 197ms 1 Oct 2024 386th janlelis 702 68 37ms 1 Oct 2024 386th tatzyr 🇯🇵 702 68 39ms 23 Dec 2024 388th emgordon154 702 76 6ms 7 Jun 2025 389th Shanethegamer 🇺🇸 702 92 18ms 3 Oct 2024 389th error256 702 92 26ms 7 Oct 2024 389th thatbirdguythatuknownot 702 92 17ms 14 Oct 2024 392nd Alex-x90 🇺🇸 701 100 2ms 1 Oct 2024 393rd sean-niemann 🇺🇸 700 82 450ms 23 Dec 2024 394th mousetail 🇳🇱 700 133 147ms 3 Oct 2024 395th LukeBridges 🇬🇧 699 92 10ms 3 Oct 2024 396th BlankSpruce 698 123 487ms 1 Oct 2024 397th emgordon154 695 134 203ms 25 Feb 2025 398th tobeannouncd 695 159 162ms 13 Dec 2024 399th Bulmenisaurus 694 93 19ms 6 Oct 2024 399th lynn 694 93 17ms 8 Jan 2025 399th RaBa21 🇭🇺 694 93 17ms 19 Jul 2025 402nd emgordon154 694 101 2ms 25 Nov 2024 403rd Shanethegamer 🇺🇸 693 41 4ms 4 Oct 2024 404th xyangst 692 93 10ms 1 Oct 2024 404th Salutations45 692 93 12ms 17 Nov 2024 404th strattonwhisler 692 93 10ms 26 Mar 2025 407th Alex-x90 🇺🇸 692 124 450ms 1 Oct 2024 407th Herbert00709 🇵🇱 692 124 66ms 14 Jun 2025 409th albanian-laundromat 692 147 2ms 30 Jun 2025 410th Shanethegamer 🇺🇸 691 83 508ms 5 Oct 2024 411th pardouin 🇫🇷 688 57 5ms 3 Oct 2024 412th NickTheEASDude 🇺🇸 688 115 3ms 17 Dec 2024 413th DialFrost 🇸🇬 687 94 21ms 1 Oct 2024 414th dokutan 687 116 8ms 19 Oct 2024 415th MeWhenI 🇻🇦 686 68 254ms 2 Oct 2024 416th error256 685 104 386ms 14 Oct 2024 417th Lv0Sys 🇵🇱 684 94 11ms 15 Jun 2025 417th XenThe 🇬🇧 684 94 10ms 7 Jul 2025 419th ovs-code 🇩🇪 683 84 415ms 3 Oct 2024 419th snoozingnewt 🇺🇸 683 84 346ms 5 hours ago 421st KatieLG 🇬🇧 682 70 41ms 2 Oct 2025 422nd aDwarfNamedUrist 682 162 183ms 1 Sep 2025 423rd madex 🇩🇪 681 103 2ms 2 Oct 2024 424th Shanethegamer 🇺🇸 679 65 2ms 1 Oct 2024 425th MeWhenI 🇻🇦 678 108 179ms 2 Oct 2024 426th the-zammers 678 163 140ms 1 Dec 2024 427th Shanethegamer 🇺🇸 677 172 42ms 2 Oct 2024 428th plcc0 676 37 70ms 6 Apr 2025 429th snoozingnewt 🇺🇸 676 95 75ms 10 days ago 430th BlankSpruce 674 104 2ms 1 Oct 2024 431st KasperKivimaeki 🇫🇮 672 96 43ms 1 Jul 2025 431st MeWhenI 🇻🇦 672 96 18ms 30 Jul 2025 433rd jerrandolph 672 177 269ms 25 Sep 2025 434th edsrzf 🇳🇿 671 99 3,049ms 5 Jul 2025 435th tailorspy 671 128 417ms 4 Oct 2024 436th HumanoidCPU 670 96 10ms 7 Mar 2025 437th error256 669 101 4ms 24 Oct 2024 438th MeWhenI 🇻🇦 669 174 39ms 13 Feb 2025 439th Herbert00709 🇵🇱 668 105 2ms 14 Jun 2025 440th Babafaba 667 86 426ms 18 days ago 441st dbut2 🇦🇺 665 179 283ms 31 Oct 2024 442nd AlephSquirrel 664 146 4ms 14 May 2025 443rd two-bad 🇬🇧 663 97 9ms 2 Oct 2024 443rd LordSir101 663 97 11ms 10 Aug 2025 445th CaedenHarper 🇨🇦 663 140 630ms 3 Oct 2025 446th rniii 661 106 2ms 2 Oct 2024 446th gastropner 661 106 2ms 11 Feb 2025 448th snoozingnewt 🇺🇸 661 180 242ms 28 mins ago 449th 4hg 🇺🇸 659 59 34ms 5 Oct 2024 450th DialFrost 🇸🇬 659 67 2ms 22 Dec 2024 First Prev 376–450 of 804 Next Last