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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 376th janlelis 702 68 1 Oct 2024 376th tatzyr 🇯🇵 702 68 23 Dec 2024 378th emgordon154 702 76 7 Jun 2025 379th Shanethegamer 🇺🇸 701 92 3 Oct 2024 379th error256 701 92 7 Oct 2024 379th thatbirdguythatuknownot 701 92 14 Oct 2024 382nd cbrt-x 701 157 1 Oct 2024 383rd Alex-x90 🇺🇸 700 100 1 Oct 2024 384th mousetail 🇳🇱 699 133 3 Oct 2024 385th sean-niemann 🇺🇸 698 82 23 Dec 2024 386th LukeBridges 🇬🇧 698 92 3 Oct 2024 387th BlankSpruce 697 123 1 Oct 2024 388th Shanethegamer 🇺🇸 696 172 2 Oct 2024 389th Shanethegamer 🇺🇸 693 41 4 Oct 2024 390th Bulmenisaurus 693 93 6 Oct 2024 390th lynn 693 93 8 Jan 2025 390th RaBa21 🇭🇺 693 93 21 days ago 393rd emgordon154 693 101 25 Nov 2024 394th emgordon154 693 134 25 Feb 2025 395th albanian-laundromat 692 147 30 Jun 2025 396th tobeannouncd 692 159 13 Dec 2024 397th xyangst 691 93 1 Oct 2024 397th Salutations45 691 93 17 Nov 2024 397th strattonwhisler 691 93 26 Mar 2025 400th Alex-x90 🇺🇸 691 124 1 Oct 2024 400th Herbert00709 🇵🇱 691 124 14 Jun 2025 402nd Shanethegamer 🇺🇸 690 83 5 Oct 2024 403rd pardouin 🇫🇷 688 57 3 Oct 2024 404th MeWhenI 🇻🇦 688 174 13 Feb 2025 405th MeWhenI 🇻🇦 686 68 2 Oct 2024 406th DialFrost 🇸🇬 686 94 1 Oct 2024 407th NickTheEASDude 🇺🇸 686 115 17 Dec 2024 408th Lv0Sys 🇵🇱 683 94 15 Jun 2025 408th XenThe 🇬🇧 683 94 7 Jul 2025 410th ovs-code 🇩🇪 682 84 3 Oct 2024 411th error256 681 104 14 Oct 2024 412th madex 🇩🇪 679 103 2 Oct 2024 413th plcc0 676 37 6 Apr 2025 414th Shanethegamer 🇺🇸 676 65 1 Oct 2024 415th the-zammers 675 163 1 Dec 2024 416th BlankSpruce 673 104 1 Oct 2024 417th MeWhenI 🇻🇦 673 108 2 Oct 2024 418th snoozingnewt 🇺🇸 671 96 31 Mar 2025 418th KasperKivimaeki 🇫🇮 671 96 1 Jul 2025 418th MeWhenI 🇻🇦 671 96 10 days ago 421st edsrzf 🇳🇿 671 99 5 Jul 2025 422nd aDwarfNamedUrist 671 164 16 Oct 2024 423rd HumanoidCPU 669 96 7 Mar 2025 424th Shanethegamer 🇺🇸 669 124 4 Oct 2024 425th tailorspy 669 128 4 Oct 2024 426th error256 668 101 24 Oct 2024 427th Herbert00709 🇵🇱 667 105 14 Jun 2025 428th jwhear 🇺🇸 666 197 1 Oct 2024 429th AlephSquirrel 664 146 14 May 2025 430th two-bad 🇬🇧 662 97 2 Oct 2024 431st rniii 660 106 2 Oct 2024 431st gastropner 660 106 11 Feb 2025 433rd dbut2 🇦🇺 660 179 31 Oct 2024 434th 4hg 🇺🇸 659 59 5 Oct 2024 435th MeWhenI 🇻🇦 659 88 2 Oct 2024 435th Shanethegamer 🇺🇸 659 88 5 Oct 2024 437th emgordon154 659 111 12 Jan 2025 438th GolfingSuccess 🇬🇷 658 98 5 Oct 2024 438th firegene 🇮🇪 658 98 21 Oct 2024 438th JunkIce 658 98 3 Dec 2024 441st DialFrost 🇸🇬 656 67 22 Dec 2024 442nd BambooleanLogic 🇸🇪 655 98 21 Oct 2024 443rd Macweese 655 178 5 days ago 444th error256 654 142 31 May 2025 445th RyanMHsiao 652 201 1 Oct 2024 446th MeWhenI 🇻🇦 651 88 2 Oct 2024 447th voytxt 🇨🇿 651 89 17 Apr 2025 447th dokutan 651 89 28 Jun 2025 449th SirBogman 🇺🇸 651 99 8 Oct 2024 450th dokutan 649 99 28 Jun 2025 Prev 376–450 of 731 Next