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 480th dokutan 651 89 119ms 28 Jun 2025 482nd w911 651 183 268ms 7 Oct 2024 483rd albanian-laundromat 651 293 14ms 10 days ago 484th dokutan 650 99 8ms 28 Jun 2025 485th MeWhenI 🇻🇦 648 91 704ms 29 Aug 2025 486th rucin93 🇵🇱 648 144 143ms 28 Oct 2024 487th rniii 647 106 1ms 2 Oct 2024 487th gastropner 647 106 2ms 11 Feb 2025 489th FlorianCassayre 🇫🇷 646 100 16ms 1 Oct 2024 489th bzijlema 🇳🇱 646 100 16ms 10 Oct 2024 489th bricknellj 646 100 16ms 4 Mar 2025 492nd koipondx86 645 123 2ms 8 Nov 2024 493rd CaedenHarper 🇨🇦 644 100 9ms 22 Aug 2025 493rd iczelia 🇩🇪 644 100 9ms 11 Oct 2025 493rd Yax42 🇫🇷 644 100 9ms 20 days ago 496th Shanethegamer 🇺🇸 643 124 6ms 4 Oct 2024 497th Apataras 643 145 381ms 25 Jun 2025 498th tomh1012 641 111 441ms 8 Sep 2025 499th btjones0 640 101 16ms 2 Dec 2024 500th stefangimmillaro 639 73 301ms 1 Oct 2024 501st elgan65536 639 146 147ms 2 Oct 2024 501st dokutan 639 146 382ms 24 days ago 501st luuumine 🇫🇷 639 146 146ms 21 days ago 504th MeWhenI 🇻🇦 638 73 8ms 3 Oct 2024 505th msbranicky 634 188 296ms 7 Jan 2025 506th annaproxy 633 102 16ms 1 Oct 2024 506th xyangst 633 102 10ms 1 Oct 2024 508th dokutan 632 91 345ms 19 Oct 2024 509th Shanethegamer 🇺🇸 631 74 278ms 16 Oct 2024 510th Florian-Mt 631 102 9ms 12 days ago 511th albanian-laundromat 631 264 492ms 3 Nov 2025 512th robin-scragg 627 103 11ms 21 Aug 2025 513th DialFrost 🇸🇬 627 304 153ms 13 Aug 2025 514th AlephSquirrel 625 40 40ms 1 Oct 2024 515th dokutan 624 127 2ms 10 Dec 2024 516th Jonatan6 🇩🇰 623 110 2ms 24 Oct 2024 516th solisolu 623 110 2ms 22 days ago 518th solisolu 621 104 9ms 15 Nov 2025 519th codereport 🇨🇦 619 63 33ms 2 Oct 2024 520th BalaM314 619 104 9ms 4 Feb 2025 520th acollett89 619 104 9ms 15 Jul 2025 522nd SirBogman 🇺🇸 618 93 384ms 23 Jul 2025 523rd MarcMush 🇫🇷 617 91 893ms 8 Oct 2024 524th Ripick 617 135 346ms 23 Mar 2025 525th fourth-bit 615 105 19ms 1 Oct 2024 525th jared-hughes 615 105 15ms 3 Oct 2024 525th mattyhempstead 615 105 27ms 7 Oct 2024 528th olleicua 🇺🇸 612 78 40ms 18 Oct 2024 529th evnu 612 147 78ms 12 Oct 2025 530th bac0id 611 141 591ms 10 Jan 2025 531st davecame 609 106 15ms 1 Oct 2024 531st starfihs 609 106 10ms 2 Oct 2024 531st rschwa6308 🇺🇸 609 106 16ms 28 Oct 2024 531st snydej 609 106 15ms 21 Nov 2024 531st andrewjc2000 609 106 15ms 17 Jul 2025 531st travisdoesmath 609 106 16ms 7 Sep 2025 537th Seanharrs 609 117 470ms 15 Nov 2024 538th kaascevich 609 134 121ms 9 Jul 2025 539th daveberlin 607 106 9ms 27 Jun 2025 540th not-a-pokemon 607 113 2ms 23 Jul 2025 541st Shanethegamer 🇺🇸 606 154 145ms 3 Oct 2024 542nd MeWhenI 🇻🇦 605 73 2ms 2 Oct 2024 543rd alemelis 604 93 536ms 1 Oct 2024 544th commandblockguy 🇺🇸 604 107 15ms 7 Oct 2024 544th zbreit 🇺🇸 604 107 16ms 29 Oct 2024 544th StardustGogeta 604 107 16ms 30 Oct 2024 544th ZakkkkAttackkkk 🇵🇭 604 107 16ms 8 Feb 2025 544th InigoK 🇺🇸 604 107 16ms 22 Sep 2025 549th jupj 🇫🇮 601 114 2ms 20 Jul 2025 550th neihousaigaai 598 108 16ms 4 Oct 2024 550th StefanHabel 🇨🇦 598 108 16ms 23 Jan 2025 550th CaedenHarper 🇨🇦 598 108 16ms 22 Jul 2025 553rd MeWhenI 🇻🇦 597 98 7ms 1 Oct 2024 554th dokutan 596 116 2ms 19 Nov 2025 555th arcpolaris 593 120 351ms 28 Jan 2025 556th SirBogman 🇺🇸 591 64 184ms 11 Jul 2025 557th JunkIce 587 98 346ms 3 Dec 2024 557th commandblockguy 🇺🇸 587 98 471ms 1 Sep 2025 559th cros107 🇦🇺 587 110 16ms 1 Jan 2025 559th guilhem-roy 🇫🇷 587 110 17ms 29 May 2025 First Prev 481–560 of 845 Next Last