Card Number Validation in all languages in bytes. 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL 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 ><> ALGOL 68 ArkScript 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 APL 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 719th jusaka 550 170 355ms 2 days ago 722nd gpikmddk 549 130 417ms 30 Oct 2025 723rd JDiLenarda 🇫🇷 549 165 1,394ms 1 Oct 2024 724th Matter1024 🇮🇳 548 149 445ms 13 days ago 725th xyangst 548 171 171ms 1 Oct 2024 726th kmathis22 547 171 350ms 19 Nov 2025 727th zakariamouhid 546 118 9ms 1 Oct 2024 728th croc54 546 146 10ms 15 Dec 2024 729th najs91 545 131 391ms 15 Oct 2024 729th bac0id 545 131 422ms 9 Jan 2025 729th CaedenHarper 🇨🇦 545 131 370ms 17 Oct 2025 732nd PyryL 🇫🇮 543 147 10ms 1 Mar 2025 733rd eranws 542 119 9ms 23 Dec 2024 733rd ComradeSquirrel 542 119 10ms 6 days ago 735th dokutan 540 131 2ms 10 Feb 2026 736th dokutan 539 107 956ms 23 days ago 737th Sciman101 539 147 2ms 26 Mar 2025 738th mbittner20 539 148 10ms 13 Oct 2024 738th YAJUE114514 539 148 10ms 12 Dec 2025 740th msbranicky 536 175 156ms 13 Dec 2024 741st psaban 535 149 15ms 31 Jul 2025 741st TheZwierzLF 🇵🇱 535 149 11ms 24 Nov 2025 741st RodAlc24 🇪🇸 535 149 17ms 22 Feb 2026 744th JRaspass 🇬🇧 533 74 3ms 11 days ago 745th deancureton 533 121 9ms 30 Dec 2024 746th FlorianCassayre 🇫🇷 532 150 18ms 1 Oct 2024 746th jameswmccarty 532 150 10ms 5 Oct 2024 746th yousefalizadeh 532 150 10ms 23 Oct 2024 746th feherd 532 150 11ms 31 Oct 2024 746th kadamkaustubh 532 150 10ms 8 Nov 2025 751st msbranicky 530 126 2,655ms 9 Jan 2025 752nd Protothor 528 122 10ms 25 days ago 753rd adamnielson42 🇺🇸 525 152 10ms 6 Oct 2024 753rd voidgloom 525 152 10ms 22 Oct 2024 753rd omero-san 525 152 10ms 22 Sep 2025 753rd brochmann 🇸🇪 525 152 10ms 12 Oct 2025 757th Macweese 525 178 405ms 3 Aug 2025 758th isaiah0311 🇺🇸 524 135 2ms 9 Feb 2026 758th jusaka 524 135 2ms 2 days ago 760th TheZwierzLF 🇵🇱 523 127 507ms 12 Dec 2025 761st galloj 🇨🇿 522 112 19ms 4 Oct 2024 762nd xyangst 521 153 11ms 1 Oct 2024 762nd denisfouchard 521 153 10ms 21 Aug 2025 764th snoozingnewt 🇨🇦 520 213 138ms 2 Nov 2025 765th bac0id 519 180 388ms 9 Jan 2025 766th osNiko 🇧🇷 518 154 9ms 21 Aug 2025 767th sidok 516 109 248ms 13 Nov 2024 768th Andrey2001 515 129 525ms 1 Feb 2026 769th robin-scragg 515 155 11ms 21 Aug 2025 769th celiendonze 🇨🇭 515 155 10ms 17 Oct 2025 771st dokutan 514 143 210ms 19 Oct 2024 772nd nephila-nacrea 🇬🇧 513 77 4ms 2 Oct 2024 773rd travisdoesmath 511 156 10ms 7 Sep 2025 773rd Shotokhan 511 156 10ms 21 Sep 2025 775th yoshykai 511 183 374ms 12 Apr 2025 776th KatieLG 🇬🇧 510 140 361ms 1 Oct 2024 777th Chinay-Domitrix 🇺🇸 509 131 2,759ms 30 Mar 2025 778th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 779th lhulinsky 508 157 10ms 21 Oct 2024 780th dokutan 507 126 156ms 22 Jun 2025 781st ellis-rix 505 158 10ms 9 Dec 2024 782nd osNiko 🇧🇷 503 72 49ms 11 Jan 2026 783rd msbranicky 503 138 3ms 3 Oct 2024 784th snoozingnewt 🇨🇦 503 142 436ms 2 Nov 2025 785th jlangvand 502 141 1ms 15 Oct 2024 785th HumanoidCPU 502 141 1ms 7 Mar 2025 787th webmiche 502 159 11ms 3 Nov 2025 788th blaztoma 🇱🇹 500 154 119ms 28 Nov 2025 789th Mabeloid 🇳🇴 499 133 538ms 2 Oct 2024 790th MeWhenI 🇻🇦 499 149 56ms 4 Oct 2024 791st CheeseCake628 🇳🇴 498 160 104ms 5 Nov 2024 792nd pres-abhisheksinha 495 161 10ms 8 Oct 2024 793rd CarterStroik 493 161 2ms 19 Nov 2025 794th owen-c-parker 🇺🇸 492 131 10ms 1 Oct 2024 795th HumanoidCPU 492 145 480ms 5 Oct 2024 796th ibixina 492 162 11ms 13 Oct 2024 796th TheAtrossian 492 162 11ms 5 Jan 2025 798th h-hh-hhh 🇺🇦 491 177 70ms 2 Nov 2024 799th snoozingnewt 🇨🇦 490 150 219ms 2 Nov 2025 800th snoozingnewt 🇨🇦 490 249 26ms 2 Nov 2025 First Prev 721–800 of 932 Next Last