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 Dragon Curve 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 Dragon Curve 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 400th emgordon154 753 94 2ms 7 Feb 2026 402nd davecame 753 106 18ms 1 Oct 2024 402nd starfihs 753 106 11ms 2 Oct 2024 402nd rschwa6308 🇺🇸 753 106 19ms 28 Oct 2024 402nd snydej 753 106 20ms 21 Nov 2024 402nd andrewjc2000 753 106 19ms 17 Jul 2025 402nd qpwoeirut 753 106 11ms 19 Aug 2025 402nd KatieLG 🇬🇧 753 106 17ms 11 Feb 2026 409th stackofbears 752 52 34ms 14 Mar 2025 410th Shanethegamer 🇺🇸 752 114 24ms 10 days ago 411th MeWhenI 🇻🇦 751 89 2,339ms 24 Oct 2024 412th Maznek 750 86 12ms 4 Oct 2024 413th sean-niemann 🇺🇸 750 93 107ms 24 Oct 2024 414th sean-niemann 🇺🇸 750 116 449ms 24 Oct 2024 414th luuumine 🇫🇷 750 116 414ms 15 Dec 2025 416th Shanethegamer 🇺🇸 749 64 38ms 3 Oct 2024 416th Andriamanitra 🇫🇮 749 64 37ms 5 Oct 2024 418th MeWhenI 🇻🇦 749 106 1ms 2 Oct 2024 419th rak1507 🇬🇧 748 38 2ms 30 Dec 2024 420th Shanethegamer 🇺🇸 747 121 89ms 3 Oct 2024 421st Natanaelel 🇸🇪 746 53 3ms 10 Jan 2026 422nd commandz0 🇺🇸 746 107 19ms 7 Oct 2024 422nd zbreit 🇺🇸 746 107 18ms 29 Oct 2024 422nd StardustGogeta 746 107 17ms 30 Oct 2024 422nd ZakkkkAttackkkk 🇵🇭 746 107 19ms 8 Feb 2025 422nd InigoK 🇺🇸 746 107 19ms 22 Sep 2025 422nd Lv0Sys 🇵🇱 746 107 19ms 22 Feb 2026 428th kg583 🇺🇸 745 156 37ms 15 Mar 2026 429th SirBogman 🇺🇸 743 63 274ms 23 Jul 2025 430th Shanethegamer 🇺🇸 743 90 2,524ms 28 Oct 2024 430th ScottHamper 743 90 2,701ms 11 Dec 2025 432nd DialFrost 🇸🇬 742 76 764ms 9 Oct 2024 433rd KrausRaus 🇺🇸 741 87 11ms 1 Oct 2024 433rd GeorgeStechman 🇬🇧 741 87 15ms 24 Oct 2024 433rd coreynash 741 87 10ms 13 Feb 2025 436th Shanethegamer 🇺🇸 739 100 161ms 24 May 2025 437th neihousaigaai 739 108 19ms 4 Oct 2024 437th StefanHabel 🇨🇦 739 108 20ms 23 Jan 2025 437th CaedenHarper 🇨🇦 739 108 18ms 22 Jul 2025 440th lifthrasiir 🇰🇷 738 90 473ms 2 Dec 2024 441st stefangimmillaro 738 92 8ms 2 Oct 2024 441st Shanethegamer 🇺🇸 738 92 5ms 3 Oct 2024 443rd MeWhenI 🇻🇦 738 111 128ms 2 Oct 2024 444th anter69 🇭🇺 737 65 38ms 25 Feb 2026 445th Kacarott 🇦🇺 737 73 1,111ms 1 Oct 2024 445th chunes3 🇺🇸 737 73 1,046ms 2 Oct 2024 447th DialFrost 🇸🇬 737 131 7ms 11 Dec 2024 448th stefangimmillaro 736 114 424ms 13 Oct 2024 449th MeWhenI 🇻🇦 735 34 53ms 2 Oct 2024 449th emgordon154 735 34 64ms 11 Sep 2025 449th plcc0 735 34 70ms 31 Jan 2026 452nd edsrzf 🇳🇿 734 52 134ms 16 Jan 2026 453rd kirjavascript 733 88 11ms 15 Mar 2025 454th Shanethegamer 🇺🇸 732 112 106ms 3 Oct 2024 455th Shanethegamer 🇺🇸 731 132 7ms 2 Oct 2024 456th error256 730 98 511ms 17 Jan 2026 457th MeWhenI 🇻🇦 729 88 129ms 2 Oct 2024 457th Shanethegamer 🇺🇸 729 88 135ms 8 Jan 2025 459th annaproxy 729 132 15ms 1 Oct 2024 460th retrohun 727 60 2ms 8 days ago 461st Shanethegamer 🇺🇸 727 96 2ms 3 Oct 2024 462nd dtbao20 🇻🇳 725 89 13ms 1 Oct 2024 462nd madeforlosers 725 89 12ms 17 Oct 2024 462nd junkondo-jp 725 89 11ms 14 Dec 2024 462nd alexsave 725 89 10ms 20 Jan 2026 466th cros107 🇦🇺 725 110 18ms 1 Jan 2025 466th guilhem-roy 🇫🇷 725 110 19ms 29 May 2025 468th weeble 724 74 6ms 1 Jul 2025 469th MeWhenI 🇻🇦 724 102 155ms 27 Mar 2026 470th MeWhenI 🇻🇦 723 78 332ms 2 Oct 2024 471st dokutan 722 92 613ms 12 Mar 2026 472nd voytxt 🇨🇿 721 89 131ms 17 Apr 2025 473rd mousetail 🇳🇱 719 111 20ms 6 Oct 2024 474th snyderek 🇺🇸 719 121 61ms 1 Oct 2024 475th ovs-code 🇩🇪 717 75 1,104ms 1 Oct 2024 476th snoozingnewt 🇨🇦 715 95 78ms 23 Oct 2025 477th SirBogman 🇺🇸 714 93 529ms 23 Jul 2025 477th snoozingnewt 🇨🇦 714 93 464ms 6 Dec 2025 479th rzv-me 714 95 6ms 5 Oct 2024 480th MeWhenI 🇻🇦 714 115 453ms 5 Oct 2024 First Prev 401–480 of 1,012 Next Last