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 481st GolfingSuccess 🇬🇷 659 98 19ms 5 Oct 2024 481st firegene 🇮🇪 659 98 16ms 21 Oct 2024 481st JunkIce 659 98 11ms 3 Dec 2024 484th BambooleanLogic 🇸🇪 657 98 10ms 21 Oct 2024 485th error256 657 142 166ms 31 May 2025 486th AlephSquirrel 657 146 4ms 14 May 2025 487th Herbert00709 🇵🇱 655 105 2ms 14 Jun 2025 488th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 489th MeWhenI 🇻🇦 653 88 440ms 2 Oct 2024 490th SirBogman 🇺🇸 653 99 16ms 8 Oct 2024 491st voytxt 🇨🇿 651 89 136ms 17 Apr 2025 491st dokutan 651 89 120ms 28 Jun 2025 493rd w911 651 183 329ms 7 Oct 2024 494th albanian-laundromat 651 293 14ms 8 Dec 2025 495th dokutan 650 99 10ms 28 Jun 2025 496th rniii 649 106 1ms 2 Oct 2024 496th gastropner 649 106 2ms 11 Feb 2025 498th DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 499th MeWhenI 🇻🇦 648 91 994ms 29 Aug 2025 500th rucin93 🇵🇱 648 144 148ms 28 Oct 2024 501st FlorianCassayre 🇫🇷 646 100 17ms 1 Oct 2024 501st bzijlema 🇳🇱 646 100 18ms 10 Oct 2024 501st bricknellj 646 100 17ms 4 Mar 2025 504th koipondx86 645 123 2ms 8 Nov 2024 505th CaedenHarper 🇨🇦 644 100 9ms 22 Aug 2025 505th iczelia 🇩🇪 644 100 9ms 11 Oct 2025 505th Yax42 🇫🇷 644 100 10ms 27 Nov 2025 508th Apataras 644 145 414ms 25 Jun 2025 509th tomh1012 643 111 539ms 8 Sep 2025 510th Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 511th btjones0 640 101 18ms 2 Dec 2024 512th dokutan 640 146 379ms 23 Nov 2025 513th stefangimmillaro 639 73 331ms 1 Oct 2024 514th elgan65536 639 146 153ms 2 Oct 2024 514th luuumine 🇫🇷 639 146 147ms 26 Nov 2025 516th MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 517th msbranicky 634 188 289ms 7 Jan 2025 518th annaproxy 633 102 17ms 1 Oct 2024 518th xyangst 633 102 11ms 1 Oct 2024 518th solisolu 633 102 10ms 31 Dec 2025 521st dokutan 632 91 377ms 19 Oct 2024 522nd Shanethegamer 🇺🇸 631 74 287ms 16 Oct 2024 523rd Florian-Mt 631 102 9ms 5 Dec 2025 524th albanian-laundromat 631 264 1,424ms 3 Nov 2025 525th robin-scragg 627 103 11ms 21 Aug 2025 526th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 527th AlephSquirrel 625 40 43ms 1 Oct 2024 528th Jonatan6 🇩🇰 625 110 2ms 24 Oct 2024 528th solisolu 625 110 2ms 25 Nov 2025 530th dokutan 624 127 2ms 10 Dec 2024 531st codereport 🇨🇦 619 63 33ms 2 Oct 2024 532nd BalaM314 619 104 9ms 4 Feb 2025 532nd acollett89 619 104 10ms 15 Jul 2025 534th Yax42 🇫🇷 619 111 2ms 9 Jan 2026 535th SirBogman 🇺🇸 618 93 510ms 23 Jul 2025 536th MarcMush 🇫🇷 617 91 764ms 8 Oct 2024 537th Ripick 617 135 346ms 23 Mar 2025 538th fourth-bit 615 105 17ms 1 Oct 2024 538th jared-hughes 615 105 18ms 3 Oct 2024 538th mattyhempstead 615 105 29ms 7 Oct 2024 541st bac0id 614 141 405ms 10 Jan 2025 542nd olleicua 🇺🇸 613 78 35ms 18 Oct 2024 543rd evnu 612 147 86ms 12 Oct 2025 544th davecame 610 106 18ms 1 Oct 2024 544th starfihs 610 106 10ms 2 Oct 2024 544th rschwa6308 🇺🇸 610 106 16ms 28 Oct 2024 544th snydej 610 106 17ms 21 Nov 2024 544th andrewjc2000 610 106 17ms 17 Jul 2025 544th travisdoesmath 610 106 17ms 7 Sep 2025 550th Seanharrs 610 117 471ms 15 Nov 2024 551st kaascevich 609 134 121ms 9 Jul 2025 552nd not-a-pokemon 608 113 2ms 23 Jul 2025 553rd daveberlin 607 106 9ms 27 Jun 2025 554th Shanethegamer 🇺🇸 606 154 151ms 3 Oct 2024 555th alemelis 604 93 448ms 1 Oct 2024 556th commandz0 🇺🇸 604 107 17ms 7 Oct 2024 556th zbreit 🇺🇸 604 107 17ms 29 Oct 2024 556th StardustGogeta 604 107 19ms 30 Oct 2024 556th ZakkkkAttackkkk 🇵🇭 604 107 17ms 8 Feb 2025 556th InigoK 🇺🇸 604 107 17ms 22 Sep 2025 First Prev 481–560 of 872 Next Last