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 401st davecame 753 106 18ms 1 Oct 2024 401st starfihs 753 106 11ms 2 Oct 2024 401st rschwa6308 🇺🇸 753 106 19ms 28 Oct 2024 401st snydej 753 106 20ms 21 Nov 2024 401st andrewjc2000 753 106 19ms 17 Jul 2025 401st qpwoeirut 753 106 11ms 19 Aug 2025 401st KatieLG 🇬🇧 753 106 17ms 11 Feb 2026 408th stackofbears 752 52 34ms 14 Mar 2025 409th Shanethegamer 🇺🇸 752 114 1,031ms 4 days ago 410th MeWhenI 🇻🇦 751 89 2,264ms 24 Oct 2024 411th Maznek 750 86 10ms 4 Oct 2024 412th sean-niemann 🇺🇸 750 93 113ms 24 Oct 2024 413th sean-niemann 🇺🇸 750 116 460ms 24 Oct 2024 413th luuumine 🇫🇷 750 116 438ms 15 Dec 2025 415th Shanethegamer 🇺🇸 749 64 36ms 3 Oct 2024 415th Andriamanitra 🇫🇮 749 64 35ms 5 Oct 2024 417th MeWhenI 🇻🇦 749 106 1ms 2 Oct 2024 418th rak1507 🇬🇧 748 38 2ms 30 Dec 2024 419th Shanethegamer 🇺🇸 747 121 89ms 3 Oct 2024 420th Natanaelel 🇸🇪 746 53 3ms 10 Jan 2026 421st commandz0 🇺🇸 746 107 19ms 7 Oct 2024 421st zbreit 🇺🇸 746 107 18ms 29 Oct 2024 421st StardustGogeta 746 107 17ms 30 Oct 2024 421st ZakkkkAttackkkk 🇵🇭 746 107 19ms 8 Feb 2025 421st InigoK 🇺🇸 746 107 19ms 22 Sep 2025 421st Lv0Sys 🇵🇱 746 107 19ms 22 Feb 2026 427th kg583 🇺🇸 745 156 37ms 15 Mar 2026 428th SirBogman 🇺🇸 743 63 277ms 23 Jul 2025 429th Shanethegamer 🇺🇸 743 90 2,379ms 28 Oct 2024 429th ScottHamper 743 90 2,357ms 11 Dec 2025 431st DialFrost 🇸🇬 742 76 802ms 9 Oct 2024 432nd KrausRaus 🇺🇸 741 87 12ms 1 Oct 2024 432nd GeorgeStechman 🇬🇧 741 87 11ms 24 Oct 2024 432nd coreynash 741 87 10ms 13 Feb 2025 435th Shanethegamer 🇺🇸 739 100 161ms 24 May 2025 436th neihousaigaai 739 108 19ms 4 Oct 2024 436th StefanHabel 🇨🇦 739 108 20ms 23 Jan 2025 436th CaedenHarper 🇨🇦 739 108 18ms 22 Jul 2025 439th lifthrasiir 🇰🇷 738 90 473ms 2 Dec 2024 440th stefangimmillaro 738 92 8ms 2 Oct 2024 440th Shanethegamer 🇺🇸 738 92 5ms 3 Oct 2024 442nd MeWhenI 🇻🇦 738 111 128ms 2 Oct 2024 443rd anter69 🇭🇺 737 65 38ms 25 Feb 2026 444th Kacarott 🇦🇺 737 73 1,111ms 1 Oct 2024 444th chunes3 🇺🇸 737 73 1,046ms 2 Oct 2024 446th DialFrost 🇸🇬 737 131 7ms 11 Dec 2024 447th MeWhenI 🇻🇦 735 34 54ms 2 Oct 2024 447th emgordon154 735 34 62ms 11 Sep 2025 447th plcc0 735 34 69ms 31 Jan 2026 450th edsrzf 🇳🇿 734 52 134ms 16 Jan 2026 451st stefangimmillaro 734 114 376ms 13 Oct 2024 452nd kirjavascript 733 88 12ms 15 Mar 2025 453rd Shanethegamer 🇺🇸 732 112 121ms 3 Oct 2024 454th Shanethegamer 🇺🇸 731 132 7ms 2 Oct 2024 455th error256 730 98 513ms 17 Jan 2026 456th annaproxy 729 132 15ms 1 Oct 2024 457th MeWhenI 🇻🇦 728 88 130ms 2 Oct 2024 457th Shanethegamer 🇺🇸 728 88 135ms 8 Jan 2025 459th retrohun 727 60 2ms 2 days ago 460th Shanethegamer 🇺🇸 727 96 2ms 3 Oct 2024 461st dtbao20 🇻🇳 725 89 11ms 1 Oct 2024 461st madeforlosers 725 89 10ms 17 Oct 2024 461st junkondo-jp 725 89 10ms 14 Dec 2024 461st alexsave 725 89 10ms 20 Jan 2026 465th cros107 🇦🇺 725 110 18ms 1 Jan 2025 465th guilhem-roy 🇫🇷 725 110 19ms 29 May 2025 467th weeble 724 74 6ms 1 Jul 2025 468th MeWhenI 🇻🇦 724 102 155ms 23 days ago 469th MeWhenI 🇻🇦 723 78 332ms 2 Oct 2024 470th dokutan 722 92 613ms 12 Mar 2026 471st voytxt 🇨🇿 720 89 131ms 17 Apr 2025 472nd mousetail 🇳🇱 719 111 20ms 6 Oct 2024 473rd snyderek 🇺🇸 719 121 60ms 1 Oct 2024 474th ovs-code 🇩🇪 717 75 1,104ms 1 Oct 2024 475th SirBogman 🇺🇸 715 93 529ms 23 Jul 2025 475th snoozingnewt 🇨🇦 715 93 464ms 6 Dec 2025 477th snoozingnewt 🇨🇦 715 95 78ms 23 Oct 2025 478th rzv-me 714 95 6ms 5 Oct 2024 479th MeWhenI 🇻🇦 714 115 453ms 5 Oct 2024 480th h3ra993huskp 🇯🇵 714 131 422ms 30 Nov 2025 First Prev 401–480 of 1,007 Next Last