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 Calendar 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 Multitap Input 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 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 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar 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 Multitap Input 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 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 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 480th LordSir101 664 97 11ms 10 Aug 2025 482nd yeminghan2021 663 131 56ms 13 days ago 483rd BlankSpruce 662 104 2ms 1 Oct 2024 484th snoozingnewt 🇨🇦 662 180 291ms 2 Nov 2025 485th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 486th MeWhenI 🇻🇦 659 88 131ms 2 Oct 2024 486th Shanethegamer 🇺🇸 659 88 140ms 5 Oct 2024 488th GolfingSuccess 🇬🇷 659 98 19ms 5 Oct 2024 488th firegene 🇮🇪 659 98 16ms 21 Oct 2024 488th JunkIce 659 98 11ms 3 Dec 2024 491st BambooleanLogic 🇸🇪 657 98 9ms 21 Oct 2024 492nd error256 657 142 159ms 31 May 2025 493rd AlephSquirrel 657 146 4ms 14 May 2025 494th Herbert00709 🇵🇱 656 105 2ms 14 Jun 2025 495th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 496th MeWhenI 🇻🇦 653 88 440ms 2 Oct 2024 497th SirBogman 🇺🇸 653 99 16ms 8 Oct 2024 498th voytxt 🇨🇿 651 89 136ms 17 Apr 2025 498th dokutan 651 89 120ms 28 Jun 2025 500th w911 651 183 308ms 7 Oct 2024 501st albanian-laundromat 651 293 14ms 8 Dec 2025 502nd dokutan 650 99 11ms 28 Jun 2025 503rd rniii 649 106 1ms 2 Oct 2024 503rd gastropner 649 106 2ms 11 Feb 2025 503rd solisolu 649 106 2ms 2 days ago 506th DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 507th rucin93 🇵🇱 648 144 143ms 28 Oct 2024 508th FlorianCassayre 🇫🇷 646 100 17ms 1 Oct 2024 508th bzijlema 🇳🇱 646 100 18ms 10 Oct 2024 508th bricknellj 646 100 17ms 4 Mar 2025 511th koipondx86 645 123 2ms 8 Nov 2024 512th CaedenHarper 🇨🇦 644 100 13ms 22 Aug 2025 512th iczelia 🇩🇪 644 100 11ms 11 Oct 2025 512th Yax42 🇫🇷 644 100 14ms 27 Nov 2025 515th Apataras 644 145 414ms 25 Jun 2025 516th tomh1012 643 111 539ms 8 Sep 2025 517th Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 518th MeWhenI 🇻🇦 641 91 994ms 29 Aug 2025 519th btjones0 640 101 18ms 2 Dec 2024 520th dokutan 640 146 379ms 23 Nov 2025 521st stefangimmillaro 639 73 331ms 1 Oct 2024 522nd dokutan 639 90 401ms 2 days ago 523rd elgan65536 🇺🇸 639 146 164ms 2 Oct 2024 523rd luuumine 🇫🇷 639 146 148ms 26 Nov 2025 525th MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 526th annaproxy 634 102 17ms 1 Oct 2024 526th xyangst 634 102 11ms 1 Oct 2024 526th solisolu 634 102 10ms 31 Dec 2025 529th msbranicky 634 188 279ms 7 Jan 2025 530th Shanethegamer 🇺🇸 631 74 287ms 16 Oct 2024 531st Florian-Mt 631 102 10ms 5 Dec 2025 532nd albanian-laundromat 631 264 1,644ms 3 Nov 2025 533rd robin-scragg 627 103 11ms 21 Aug 2025 534th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 535th Jonatan6 🇩🇰 626 110 2ms 24 Oct 2024 536th AlephSquirrel 625 40 43ms 1 Oct 2024 537th dokutan 624 127 2ms 10 Dec 2024 538th Yax42 🇫🇷 620 111 2ms 9 Jan 2026 539th codereport 🇨🇦 619 63 33ms 2 Oct 2024 540th BalaM314 619 104 10ms 4 Feb 2025 540th acollett89 619 104 11ms 15 Jul 2025 542nd SirBogman 🇺🇸 618 93 510ms 23 Jul 2025 543rd MarcMush 🇫🇷 617 91 813ms 8 Oct 2024 544th Ripick 617 135 346ms 23 Mar 2025 545th bac0id 616 141 405ms 10 Jan 2025 546th fourth-bit 615 105 17ms 1 Oct 2024 546th jared-hughes 615 105 18ms 3 Oct 2024 546th mattyhempstead 615 105 29ms 7 Oct 2024 549th olleicua 🇺🇸 613 78 35ms 18 Oct 2024 550th evnu 612 147 86ms 12 Oct 2025 551st davecame 610 106 18ms 1 Oct 2024 551st starfihs 610 106 10ms 2 Oct 2024 551st rschwa6308 🇺🇸 610 106 16ms 28 Oct 2024 551st snydej 610 106 17ms 21 Nov 2024 551st andrewjc2000 610 106 17ms 17 Jul 2025 551st travisdoesmath 610 106 17ms 7 Sep 2025 557th Seanharrs 610 117 471ms 15 Nov 2024 558th not-a-pokemon 609 113 2ms 23 Jul 2025 559th kaascevich 609 134 121ms 9 Jul 2025 560th daveberlin 607 106 10ms 27 Jun 2025 First Prev 481–560 of 885 Next Last