Card Number Validation in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Tower of Hanoi 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 Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 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 Erlang 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 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 Tower of Hanoi 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 Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 451st tailorspy 673 128 379ms 4 Oct 2024 452nd jerrandolph 673 177 285ms 25 Sep 2025 452nd CaedenHarper 🇨🇦 673 177 278ms 27 days ago 454th HumanoidCPU 670 96 9ms 7 Mar 2025 455th error256 669 101 4ms 24 Oct 2024 456th MeWhenI 🇻🇦 669 174 41ms 13 Feb 2025 457th madex 🇩🇪 666 103 1ms 2 Oct 2024 458th CaedenHarper 🇨🇦 666 140 692ms 3 Oct 2025 459th dbut2 🇦🇺 666 179 264ms 31 Oct 2024 460th emgordon154 665 111 4ms 12 Jan 2025 461st two-bad 🇬🇧 664 97 10ms 2 Oct 2024 461st LordSir101 664 97 9ms 10 Aug 2025 463rd AlephSquirrel 663 146 4ms 14 May 2025 464th snoozingnewt 🇨🇦 662 180 268ms 2 Nov 2025 465th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 466th DialFrost 🇸🇬 659 67 2ms 22 Dec 2024 467th MeWhenI 🇻🇦 659 88 128ms 2 Oct 2024 467th Shanethegamer 🇺🇸 659 88 148ms 5 Oct 2024 469th GolfingSuccess 🇬🇷 659 98 16ms 5 Oct 2024 469th firegene 🇮🇪 659 98 18ms 21 Oct 2024 469th JunkIce 659 98 10ms 3 Dec 2024 472nd BlankSpruce 659 104 2ms 1 Oct 2024 473rd BambooleanLogic 🇸🇪 657 98 9ms 21 Oct 2024 474th error256 657 142 154ms 31 May 2025 475th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 476th MeWhenI 🇻🇦 653 88 504ms 2 Oct 2024 477th Herbert00709 🇵🇱 653 105 2ms 14 Jun 2025 478th SirBogman 🇺🇸 652 99 16ms 8 Oct 2024 479th voytxt 🇨🇿 651 89 129ms 17 Apr 2025 479th dokutan 651 89 119ms 28 Jun 2025 481st w911 651 183 268ms 7 Oct 2024 482nd albanian-laundromat 651 293 14ms 7 days ago 483rd dokutan 650 99 8ms 28 Jun 2025 484th MeWhenI 🇻🇦 648 91 704ms 29 Aug 2025 485th rucin93 🇵🇱 648 144 143ms 28 Oct 2024 486th rniii 647 106 1ms 2 Oct 2024 486th gastropner 647 106 2ms 11 Feb 2025 488th FlorianCassayre 🇫🇷 646 100 16ms 1 Oct 2024 488th bzijlema 🇳🇱 646 100 16ms 10 Oct 2024 488th bricknellj 646 100 16ms 4 Mar 2025 491st koipondx86 645 123 2ms 8 Nov 2024 492nd CaedenHarper 🇨🇦 644 100 9ms 22 Aug 2025 492nd iczelia 🇩🇪 644 100 9ms 11 Oct 2025 492nd Yax42 🇫🇷 644 100 9ms 18 days ago 495th Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 496th Apataras 643 145 381ms 25 Jun 2025 497th tomh1012 641 111 441ms 8 Sep 2025 498th stefangimmillaro 639 73 301ms 1 Oct 2024 499th btjones0 639 101 16ms 2 Dec 2024 500th elgan65536 639 146 147ms 2 Oct 2024 500th dokutan 639 146 382ms 21 days ago 500th luuumine 🇫🇷 639 146 146ms 18 days ago 503rd MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 504th msbranicky 634 188 296ms 7 Jan 2025 505th annaproxy 633 102 16ms 1 Oct 2024 505th xyangst 633 102 10ms 1 Oct 2024 507th dokutan 632 91 345ms 19 Oct 2024 508th Shanethegamer 🇺🇸 631 74 278ms 16 Oct 2024 509th Florian-Mt 631 102 9ms 9 days ago 510th albanian-laundromat 631 264 492ms 3 Nov 2025 511th robin-scragg 627 103 11ms 21 Aug 2025 512th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 513th AlephSquirrel 625 40 39ms 1 Oct 2024 514th dokutan 624 127 2ms 10 Dec 2024 515th Jonatan6 🇩🇰 623 110 2ms 24 Oct 2024 515th solisolu 623 110 2ms 19 days ago 517th solisolu 621 104 9ms 15 Nov 2025 518th codereport 🇨🇦 619 63 33ms 2 Oct 2024 519th BalaM314 619 104 9ms 4 Feb 2025 519th acollett89 619 104 9ms 15 Jul 2025 521st SirBogman 🇺🇸 618 93 384ms 23 Jul 2025 522nd MarcMush 🇫🇷 617 91 737ms 8 Oct 2024 523rd Ripick 617 135 346ms 23 Mar 2025 524th fourth-bit 615 105 19ms 1 Oct 2024 524th jared-hughes 615 105 15ms 3 Oct 2024 First Prev 451–525 of 844 Next Last