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 Binary Lambda Calculus 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 Binary Lambda Calculus 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 450th gastropner 662 106 2ms 11 Feb 2025 452nd 4hg 🇺🇸 661 59 34ms 5 Oct 2024 453rd snoozingnewt 🇺🇸 661 180 256ms 6 days ago 454th DialFrost 🇸🇬 659 67 2ms 22 Dec 2024 455th MeWhenI 🇻🇦 659 88 130ms 2 Oct 2024 455th Shanethegamer 🇺🇸 659 88 132ms 5 Oct 2024 457th GolfingSuccess 🇬🇷 659 98 23ms 5 Oct 2024 457th firegene 🇮🇪 659 98 17ms 21 Oct 2024 457th JunkIce 659 98 11ms 3 Dec 2024 460th emgordon154 659 111 5ms 12 Jan 2025 461st BambooleanLogic 🇸🇪 656 98 10ms 21 Oct 2024 462nd error256 656 142 156ms 31 May 2025 463rd jwhear 🇺🇸 655 197 1,691ms 1 Oct 2024 464th MeWhenI 🇻🇦 652 88 553ms 2 Oct 2024 465th SirBogman 🇺🇸 652 99 18ms 8 Oct 2024 466th voytxt 🇨🇿 651 89 152ms 17 Apr 2025 466th dokutan 651 89 120ms 28 Jun 2025 468th dokutan 650 99 9ms 28 Jun 2025 469th w911 650 183 271ms 7 Oct 2024 470th FlorianCassayre 🇫🇷 646 100 19ms 1 Oct 2024 470th bzijlema 🇳🇱 646 100 16ms 10 Oct 2024 470th bricknellj 646 100 17ms 4 Mar 2025 473rd rucin93 🇵🇱 646 144 145ms 28 Oct 2024 474th MeWhenI 🇻🇦 645 91 756ms 29 Aug 2025 475th koipondx86 644 123 2ms 8 Nov 2024 476th CaedenHarper 🇨🇦 643 100 9ms 22 Aug 2025 476th iczelia 🇩🇪 643 100 10ms 11 Oct 2025 478th Shanethegamer 🇺🇸 643 124 7ms 4 Oct 2024 479th CaedenHarper 🇨🇦 643 185 249ms 3 Jan 2025 480th tomh1012 641 111 395ms 8 Sep 2025 481st Apataras 640 145 302ms 25 Jun 2025 482nd stefangimmillaro 639 73 277ms 1 Oct 2024 483rd btjones0 639 101 18ms 2 Dec 2024 484th MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 485th Jonatan6 🇩🇰 638 110 2ms 24 Oct 2024 486th elgan65536 638 146 152ms 2 Oct 2024 487th Yax42 🇫🇷 637 101 9ms 5 Sep 2025 488th annaproxy 633 102 19ms 1 Oct 2024 488th xyangst 633 102 10ms 1 Oct 2024 490th msbranicky 633 188 250ms 7 Jan 2025 491st Shanethegamer 🇺🇸 631 74 223ms 16 Oct 2024 492nd albanian-laundromat 631 264 843ms 5 days ago 493rd dokutan 630 91 382ms 19 Oct 2024 494th mossiegoat 627 103 11ms 21 Aug 2025 495th DialFrost 🇸🇬 627 304 152ms 13 Aug 2025 496th AlephSquirrel 625 40 48ms 1 Oct 2024 497th dokutan 623 127 2ms 10 Dec 2024 498th not-a-pokemon 621 113 2ms 23 Jul 2025 499th codereport 🇨🇦 619 63 34ms 2 Oct 2024 500th BalaM314 619 104 10ms 4 Feb 2025 500th acollett89 619 104 9ms 15 Jul 2025 502nd MarcMush 🇫🇷 617 91 746ms 8 Oct 2024 503rd SirBogman 🇺🇸 617 93 521ms 23 Jul 2025 504th Ripick 617 135 340ms 23 Mar 2025 505th jupj 🇫🇮 616 114 2ms 20 Jul 2025 506th fourth-bit 615 105 17ms 1 Oct 2024 506th jared-hughes 615 105 17ms 3 Oct 2024 506th mattyhempstead 615 105 29ms 7 Oct 2024 509th olleicua 🇺🇸 612 78 36ms 18 Oct 2024 510th davecame 609 106 17ms 1 Oct 2024 510th starfihs 609 106 10ms 2 Oct 2024 510th rschwa6308 🇺🇸 609 106 18ms 28 Oct 2024 510th snydej 609 106 18ms 21 Nov 2024 510th andrewjc2000 609 106 16ms 17 Jul 2025 510th travisdoesmath 609 106 17ms 7 Sep 2025 516th Seanharrs 609 117 405ms 15 Nov 2024 517th bac0id 609 141 368ms 10 Jan 2025 518th evnu 609 147 304ms 27 days ago 519th daveberlin 607 106 10ms 27 Jun 2025 520th kaascevich 607 134 122ms 9 Jul 2025 521st MeWhenI 🇻🇦 605 73 2ms 2 Oct 2024 522nd alemelis 604 93 485ms 1 Oct 2024 523rd Shanethegamer 🇺🇸 604 154 142ms 3 Oct 2024 524th commandblockguy 🇺🇸 603 107 20ms 7 Oct 2024 524th zbreit 🇺🇸 603 107 20ms 29 Oct 2024 First Prev 451–525 of 809 Next Last