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 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 Topological Sort 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 375th error256 700 92 7 Oct 2024 375th thatbirdguythatuknownot 700 92 14 Oct 2024 378th mousetail 🇳🇱 699 133 3 Oct 2024 379th Alex-x90 🇺🇸 698 100 1 Oct 2024 380th sean-niemann 🇺🇸 697 82 23 Dec 2024 381st LukeBridges 🇬🇧 697 92 3 Oct 2024 382nd BlankSpruce 697 123 1 Oct 2024 383rd Shanethegamer 🇺🇸 696 172 2 Oct 2024 384th Shanethegamer 🇺🇸 693 41 4 Oct 2024 385th Bulmenisaurus 693 93 6 Oct 2024 385th lynn 693 93 8 Jan 2025 387th emgordon154 693 134 25 Feb 2025 388th emgordon154 692 101 25 Nov 2024 389th albanian-laundromat 692 147 11 days ago 390th tobeannouncd 692 159 13 Dec 2024 391st Alex-x90 🇺🇸 691 124 1 Oct 2024 391st Herbert00709 🇵🇱 691 124 27 days ago 393rd xyangst 690 93 1 Oct 2024 393rd Salutations45 690 93 17 Nov 2024 393rd strattonwhisler 690 93 26 Mar 2025 396th Shanethegamer 🇺🇸 688 83 5 Oct 2024 397th MeWhenI 🇻🇦 688 174 13 Feb 2025 398th pardouin 🇫🇷 687 57 3 Oct 2024 399th emgordon154 687 111 12 Jan 2025 400th MeWhenI 🇻🇦 686 68 2 Oct 2024 401st NickTheEASDude 🇺🇸 686 115 17 Dec 2024 402nd DialFrost 🇸🇬 685 94 1 Oct 2024 403rd Lv0Sys 🇵🇱 683 94 26 days ago 403rd XenThe 🇬🇧 683 94 4 days ago 405th error256 681 104 14 Oct 2024 406th ovs-code 🇩🇪 680 84 3 Oct 2024 407th madex 🇩🇪 678 103 2 Oct 2024 408th plcc0 676 37 6 Apr 2025 409th Shanethegamer 🇺🇸 676 65 1 Oct 2024 410th the-zammers 675 163 1 Dec 2024 411th MeWhenI 🇻🇦 673 108 2 Oct 2024 412th BlankSpruce 672 104 1 Oct 2024 413th snoozingnewt 🇺🇸 671 96 31 Mar 2025 413th KasperKivimaeki 🇫🇮 671 96 10 days ago 415th edsrzf 🇳🇿 671 99 6 days ago 416th aDwarfNamedUrist 671 164 16 Oct 2024 417th tailorspy 669 128 4 Oct 2024 418th HumanoidCPU 668 96 7 Mar 2025 419th error256 668 101 24 Oct 2024 420th jwhear 🇺🇸 666 197 1 Oct 2024 421st Herbert00709 🇵🇱 665 105 27 days ago 422nd two-bad 🇬🇧 661 97 2 Oct 2024 423rd dbut2 🇦🇺 660 179 31 Oct 2024 424th 4hg 🇺🇸 659 59 5 Oct 2024 425th MeWhenI 🇻🇦 659 88 2 Oct 2024 425th Shanethegamer 🇺🇸 659 88 5 Oct 2024 427th rniii 659 106 2 Oct 2024 427th gastropner 659 106 11 Feb 2025 429th Ripick 658 135 23 Mar 2025 430th MeWhenI 🇻🇦 657 98 1 Oct 2024 430th GolfingSuccess 🇬🇷 657 98 5 Oct 2024 430th firegene 🇮🇪 657 98 21 Oct 2024 430th JunkIce 657 98 3 Dec 2024 434th DialFrost 🇸🇬 656 67 22 Dec 2024 435th BambooleanLogic 🇸🇪 655 98 21 Oct 2024 436th error256 654 142 31 May 2025 437th RyanMHsiao 652 201 1 Oct 2024 438th voytxt 🇨🇿 651 89 17 Apr 2025 438th dokutan 651 89 13 days ago 440th SirBogman 🇺🇸 651 99 8 Oct 2024 441st MeWhenI 🇻🇦 649 88 2 Oct 2024 442nd dokutan 648 99 13 days ago 443rd bac0id 646 180 9 Jan 2025 444th w911 646 183 7 Oct 2024 445th rucin93 🇵🇱 645 144 28 Oct 2024 446th FlorianCassayre 🇫🇷 644 100 1 Oct 2024 446th bzijlema 🇳🇱 644 100 10 Oct 2024 446th bricknellj 644 100 4 Mar 2025 446th RaBa21 644 100 5 hours ago 450th Antibrain0 641 123 8 Nov 2024 Prev 376–450 of 710 Next