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) Taxicab Numbers 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 Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic 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) Taxicab Numbers 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 Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic 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 750 52 34ms 14 Mar 2025 409th Maznek 750 86 10ms 4 Oct 2024 410th MeWhenI 🇻🇦 750 89 2,339ms 24 Oct 2024 411th sean-niemann 🇺🇸 749 116 449ms 24 Oct 2024 411th luuumine 🇫🇷 749 116 414ms 15 Dec 2025 413th MeWhenI 🇻🇦 749 203 1,659ms 12 days ago 414th Shanethegamer 🇺🇸 748 64 38ms 3 Oct 2024 414th Andriamanitra 🇫🇮 748 64 37ms 5 Oct 2024 416th MeWhenI 🇻🇦 748 106 1ms 2 Oct 2024 417th rak1507 🇬🇧 747 38 2ms 30 Dec 2024 418th sean-niemann 🇺🇸 747 93 107ms 24 Oct 2024 419th Natanaelel 🇸🇪 746 53 3ms 10 Jan 2026 420th commandz0 🇺🇸 746 107 19ms 7 Oct 2024 420th zbreit 🇺🇸 746 107 18ms 29 Oct 2024 420th StardustGogeta 746 107 17ms 30 Oct 2024 420th ZakkkkAttackkkk 🇵🇭 746 107 19ms 8 Feb 2025 420th InigoK 🇺🇸 746 107 19ms 22 Sep 2025 420th Lv0Sys 🇵🇱 746 107 19ms 22 Feb 2026 426th Shanethegamer 🇺🇸 746 114 24ms 16 days ago 427th Shanethegamer 🇺🇸 744 121 89ms 3 Oct 2024 428th SirBogman 🇺🇸 743 63 274ms 23 Jul 2025 429th MeWhenI 🇻🇦 742 110 124ms 40 hours ago 430th KrausRaus 🇺🇸 741 87 10ms 1 Oct 2024 430th GeorgeStechman 🇬🇧 741 87 13ms 24 Oct 2024 430th coreynash 741 87 10ms 13 Feb 2025 433rd Shanethegamer 🇺🇸 741 90 2,524ms 28 Oct 2024 433rd ScottHamper 741 90 2,629ms 11 Dec 2025 435th DialFrost 🇸🇬 740 76 764ms 9 Oct 2024 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 anter69 🇭🇺 737 65 38ms 25 Feb 2026 440th lifthrasiir 🇰🇷 737 90 473ms 2 Dec 2024 441st kg583 🇺🇸 737 156 37ms 15 Mar 2026 442nd stefangimmillaro 736 92 8ms 2 Oct 2024 442nd Shanethegamer 🇺🇸 736 92 5ms 3 Oct 2024 444th MeWhenI 🇻🇦 735 34 53ms 2 Oct 2024 444th emgordon154 735 34 64ms 11 Sep 2025 444th plcc0 735 34 70ms 31 Jan 2026 447th Shanethegamer 🇺🇸 735 100 161ms 24 May 2025 448th Kacarott 🇦🇺 734 73 1,111ms 1 Oct 2024 448th chunes3 🇺🇸 734 73 1,046ms 2 Oct 2024 450th stefangimmillaro 734 114 424ms 13 Oct 2024 451st DialFrost 🇸🇬 734 131 7ms 11 Dec 2024 452nd kirjavascript 733 88 10ms 15 Mar 2025 453rd edsrzf 🇳🇿 732 52 135ms 16 Jan 2026 454th error256 731 98 511ms 17 Jan 2026 455th Shanethegamer 🇺🇸 729 112 106ms 3 Oct 2024 456th Shanethegamer 🇺🇸 729 132 7ms 2 Oct 2024 457th MeWhenI 🇻🇦 728 88 129ms 2 Oct 2024 457th Shanethegamer 🇺🇸 728 88 135ms 8 Jan 2025 459th retrohun 725 60 2ms 14 days ago 460th dtbao20 🇻🇳 725 89 12ms 1 Oct 2024 460th madeforlosers 725 89 22ms 17 Oct 2024 460th junkondo-jp 725 89 12ms 14 Dec 2024 460th alexsave 725 89 12ms 20 Jan 2026 464th Shanethegamer 🇺🇸 725 96 2ms 3 Oct 2024 465th cros107 🇦🇺 725 110 18ms 1 Jan 2025 465th guilhem-roy 🇫🇷 725 110 19ms 29 May 2025 467th annaproxy 723 132 15ms 1 Oct 2024 468th MeWhenI 🇻🇦 721 78 332ms 2 Oct 2024 469th dokutan 721 92 613ms 12 Mar 2026 470th MeWhenI 🇻🇦 721 102 155ms 27 Mar 2026 471st weeble 720 74 6ms 1 Jul 2025 472nd voytxt 🇨🇿 720 89 131ms 17 Apr 2025 473rd mousetail 🇳🇱 719 111 20ms 6 Oct 2024 474th snyderek 🇺🇸 718 121 61ms 1 Oct 2024 475th denkyuu1 715 67 36ms 2 days ago 476th ovs-code 🇩🇪 714 75 1,104ms 1 Oct 2024 477th SirBogman 🇺🇸 713 93 529ms 23 Jul 2025 477th snoozingnewt 🇨🇦 713 93 464ms 6 Dec 2025 479th rzv-me 713 95 6ms 5 Oct 2024 480th DialFrost 🇸🇬 713 106 12ms 13 Dec 2024 481st h3ra993huskp 🇯🇵 713 131 475ms 30 Nov 2025 482nd OllieBoyne 🇬🇧 712 112 19ms 17 Oct 2024 482nd WillConker 712 112 11ms 22 Oct 2024 482nd maxgodfrey2004 🇨🇦 712 112 10ms 4 Jan 2025 482nd Babafaba 712 112 18ms 11 Nov 2025 486th MeWhenI 🇻🇦 710 115 453ms 5 Oct 2024 487th DialFrost 🇸🇬 710 132 250ms 8 Apr 2025 488th Natanaelel 🇸🇪 709 55 34ms 1 Mar 2025 489th snoozingnewt 🇨🇦 709 95 86ms 23 Oct 2025 490th Shanethegamer 🇺🇸 709 118 385ms 2 Oct 2024 491st Alex-x90 🇺🇸 707 100 2ms 1 Oct 2024 491st madex 🇩🇪 707 100 2ms 21 days ago 493rd Shanethegamer 🇺🇸 707 127 1,453ms 12 days ago 494th scpchicken 🇵🇼 706 56 6ms 3 days ago 495th SB-945 706 113 17ms 1 Oct 2024 495th Artemis21 🇬🇧 706 113 18ms 23 Jan 2025 495th fkantelberg 706 113 10ms 11 Jul 2025 498th BlankSpruce 706 123 440ms 1 Oct 2024 499th cbrt-x 706 157 139ms 1 Oct 2024 500th Shanethegamer 🇺🇸 706 172 39ms 2 Oct 2024 First Prev 401–500 of 951 Next Last