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 320th ovs-code 🇩🇪 792 81 124ms 17 Apr 2025 322nd Shanethegamer 🇺🇸 792 88 106ms 4 Oct 2024 323rd emgordon154 791 151 340ms 17 Jan 2025 324th jared-hughes 791 203 88ms 20 Dec 2024 325th saito-ta 🇯🇵 790 74 8ms 1 Oct 2024 326th ovs-code 🇩🇪 790 84 524ms 3 Oct 2024 326th Shanethegamer 🇺🇸 790 84 471ms 3 Oct 2024 328th lifthrasiir 🇰🇷 790 101 17ms 21 Nov 2024 328th btjones0 790 101 18ms 2 Dec 2024 330th edsrzf 🇳🇿 789 119 158ms 23 Jul 2025 331st SirBogman 🇺🇸 789 138 39ms 11 Jul 2025 332nd KingSkyrock 🇺🇸 787 82 14ms 14 Oct 2024 333rd retrohun 787 90 2ms 21 days ago 334th stefangimmillaro 786 61 39ms 1 Oct 2024 335th Shanethegamer 🇺🇸 786 91 459ms 3 Oct 2024 336th namelessiw 786 119 486ms 9 Oct 2025 337th Shanethegamer 🇺🇸 786 152 337ms 3 Oct 2024 337th targrik 786 152 342ms 7 Jul 2025 339th sean-niemann 🇺🇸 784 107 418ms 3 Oct 2024 340th GrayJoKing 🇦🇺 783 82 121ms 1 Oct 2024 341st SirBogman 🇺🇸 782 50 32ms 8 Jul 2025 342nd annaproxy 782 102 18ms 1 Oct 2024 342nd snoozingnewt 🇨🇦 782 102 10ms 6 Dec 2025 342nd Flekay 🇩🇪 782 102 18ms 19 Feb 2026 342nd dokutan 782 102 19ms 12 Mar 2026 342nd aksyristos 782 102 19ms 24 days ago 342nd jusaka 782 102 17ms 23 days ago 342nd scpchicken 🇵🇼 782 102 17ms 12 days ago 342nd vang1ong7ang 782 102 17ms 8 hours ago 350th sean-niemann 🇺🇸 782 105 461ms 1 Oct 2024 351st m-tkach 🇺🇦 782 131 2ms 4 Oct 2024 352nd albanian-laundromat 🇺🇸 781 74 1,253ms 3 Nov 2025 353rd emgordon154 781 197 1,641ms 8 days ago 354th duckyluuk 🇳🇱 780 97 11ms 25 Nov 2025 355th adriweb 🇫🇷 779 102 1ms 5 Oct 2024 356th Shanethegamer 🇺🇸 779 120 536ms 24 Sep 2025 357th AlephSquirrel 779 124 7ms 21 Oct 2024 358th Natanaelel 🇸🇪 778 143 145ms 20 Apr 2025 359th uttumuttu 🇫🇮 777 83 13ms 1 Oct 2024 359th KatieLG 🇬🇧 777 83 13ms 1 Oct 2024 359th Larento 777 83 13ms 4 Nov 2024 359th Andrey-Plotnikov 777 83 13ms 13 Jan 2025 359th nathanadams 🇳🇿 777 83 11ms 6 Oct 2025 364th DialFrost 🇸🇬 776 90 2ms 18 Nov 2025 365th sisyphus-ppcg 🇦🇺 773 62 36ms 3 Oct 2024 366th retrohun 773 63 20ms 2 Oct 2024 367th emgordon154 773 83 134ms 18 Nov 2024 368th DialFrost 🇸🇬 773 121 557ms 24 Sep 2025 369th xsot 🇸🇬 772 125 7ms 20 Oct 2024 370th albanian-laundromat 🇺🇸 772 159 32ms 2 days ago 371st targrik 771 88 8ms 7 Feb 2025 372nd Waffle3z 771 103 2ms 2 Oct 2024 373rd MeWhenI 🇻🇦 770 109 389ms 2 Oct 2024 374th luuumine 🇫🇷 769 92 1ms 5 Dec 2025 374th bzd7 769 92 2ms 7 Dec 2025 376th ovs-code 🇩🇪 769 122 164ms 25 Apr 2025 377th lifthrasiir 🇰🇷 768 37 2ms 27 Nov 2024 378th didion0 🇺🇸 768 84 14ms 10 Jan 2025 379th jatloe 767 104 10ms 1 Oct 2024 380th albanian-laundromat 🇺🇸 766 118 90ms 13 Nov 2025 381st Shanethegamer 🇺🇸 766 124 8ms 4 Oct 2024 382nd GolfingSuccess 🇬🇷 765 70 6ms 6 Jun 2025 383rd CLOStrophobic 🇮🇹 763 160 40ms 27 Feb 2025 384th MeWhenI 🇻🇦 762 89 6ms 2 Oct 2024 385th emgordon154 761 63 38ms 18 Nov 2024 385th SirBogman 🇺🇸 761 63 37ms 19 Jul 2025 387th DialFrost 🇸🇬 761 76 1,033ms 30 Aug 2025 388th sean-niemann 🇺🇸 761 93 1ms 24 Oct 2024 389th fourth-bit 760 105 18ms 1 Oct 2024 389th jared-hughes 760 105 17ms 3 Oct 2024 389th mattyhempstead 760 105 28ms 7 Oct 2024 392nd weliveinhell 🇭🇹 759 85 10ms 1 Oct 2024 392nd SteRoy 759 85 13ms 13 May 2025 394th MeWhenI 🇻🇦 758 162 26ms 2 Oct 2024 395th MeWhenI 🇻🇦 758 203 1,659ms 6 days ago 396th 0xjac 🇨🇭 756 158 321ms 17 Jun 2025 397th MeWhenI 🇻🇦 754 88 524ms 2 Oct 2024 397th albanian-laundromat 🇺🇸 754 88 521ms 3 Nov 2025 399th GrayJoKing 🇦🇺 754 90 5ms 1 Oct 2024 400th stefangimmillaro 753 94 1ms 30 Oct 2024 First Prev 321–400 of 1,012 Next Last