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 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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 161st zacjl 860 110 7ms 10 Oct 2024 162nd voytxt 🇨🇿 859 75 10ms 1 Oct 2024 162nd MeWhenI 🇻🇦 859 75 12ms 2 Oct 2024 162nd m-tkach 🇺🇦 859 75 9ms 5 Oct 2024 162nd error256 859 75 10ms 7 Oct 2024 166th Bulmenisaurus 857 93 17ms 6 Oct 2024 166th lynn 857 93 16ms 8 Jan 2025 166th CornerMercury 🇬🇧 857 93 16ms 23 Nov 2025 166th KasperKivimaeki 🇫🇮 857 93 17ms 30 Nov 2025 166th blaztoma 🇱🇹 857 93 17ms 18 Dec 2025 171st stefangimmillaro 857 139 287ms 3 Oct 2024 172nd ovs-code 🇩🇪 856 46 4ms 4 Oct 2024 172nd nwellnhof 🇩🇪 856 46 5ms 7 Oct 2024 174th edsrzf 🇳🇿 856 90 104ms 18 Dec 2025 175th sean-niemann 🇺🇸 855 56 38ms 8 Aug 2025 176th m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 177th JayXon 🇺🇸 853 95 445ms 4 Oct 2024 178th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 179th MostParsingVex 850 100 1,024ms 1 Oct 2024 180th error256 849 106 94ms 8 Oct 2024 181st kg583 🇺🇸 849 143 40ms 20 Feb 2026 181st edsrzf 🇳🇿 849 143 43ms 2 hours ago 183rd emgordon154 848 67 1,283ms 18 Nov 2024 184th Lv0Sys 🇵🇱 848 76 12ms 26 days ago 185th DialFrost 🇸🇬 848 94 18ms 1 Oct 2024 185th ndren 848 94 16ms 14 Feb 2025 185th anter69 🇭🇺 848 94 16ms 23 days ago 188th m-tkach 🇺🇦 848 144 79ms 8 Oct 2024 189th primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 190th lynn 846 131 138ms 8 Jan 2025 191st KasperKivimaeki 🇫🇮 845 141 290ms 9 Oct 2025 192nd error256 844 94 2ms 7 Oct 2024 193rd KasperKivimaeki 🇫🇮 844 103 437ms 8 Dec 2025 194th IanUtley 844 113 19ms 2 Oct 2024 195th sean-niemann 🇺🇸 844 114 41ms 2 Oct 2024 196th sean-niemann 🇺🇸 844 121 2ms 30 Nov 2024 196th edsrzf 🇳🇿 844 121 3ms 21 Feb 2026 198th edsrzf 🇳🇿 843 98 7ms 23 days ago 199th emplv 🇱🇻 843 145 25ms 24 Oct 2024 200th nwellnhof 🇩🇪 841 84 2ms 2 Oct 2024 200th ovs-code 🇩🇪 841 84 1ms 2 Nov 2024 200th inventshah 841 84 2ms 31 Mar 2025 203rd xsot 🇸🇬 840 57 35ms 6 May 2025 204th kg583 🇺🇸 840 86 4ms 20 Feb 2026 205th moustave 839 95 20ms 4 Nov 2024 205th emgordon154 839 95 17ms 18 Nov 2024 207th emplv 🇱🇻 839 142 287ms 2 Oct 2024 207th sean-niemann 🇺🇸 839 142 275ms 2 Oct 2024 209th GrayJoKing 🇦🇺 838 47 4ms 1 Oct 2024 209th Steffan153 🇫🇮 838 47 4ms 16 Feb 2026 211th edsrzf 🇳🇿 838 131 28ms 10 Feb 2026 212th Shanethegamer 🇺🇸 837 77 10ms 1 Oct 2024 212th biocommando 🇫🇮 837 77 11ms 13 Jun 2025 214th edsrzf 🇳🇿 837 83 103ms 21 Feb 2026 215th snoozingnewt 🇨🇦 837 92 112ms 18 Dec 2025 216th JayXon 🇺🇸 837 109 1,332ms 5 Oct 2024 217th kg583 🇺🇸 837 113 8ms 20 Feb 2026 218th stefangimmillaro 836 68 1,290ms 2 Oct 2024 219th sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 219th Steffan153 🇫🇮 836 81 11ms 11 Feb 2026 221st edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 222nd stefangimmillaro 834 80 2,613ms 12 Nov 2024 223rd stefangimmillaro 834 112 149ms 4 Oct 2024 224th edsrzf 🇳🇿 833 108 88ms 26 Jul 2025 225th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 226th edsrzf 🇳🇿 833 133 154ms 19 Dec 2025 227th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 228th ovs-code 🇩🇪 833 200 1,413ms 19 Apr 2025 229th JayXon 🇺🇸 832 155 1,904ms 3 Oct 2024 230th saito-ta 🇯🇵 831 85 1ms 1 Oct 2024 231st MeWhenI 🇻🇦 831 96 17ms 30 Jul 2025 232nd emplv 🇱🇻 830 77 142ms 28 Mar 2025 233rd kg583 🇺🇸 829 80 384ms 20 Feb 2026 234th nwellnhof 🇩🇪 828 105 458ms 22 Jan 2026 235th dcgjb 826 78 10ms 6 May 2025 236th m-tkach 🇺🇦 825 58 38ms 8 Oct 2024 237th stefangimmillaro 825 99 111ms 3 Oct 2024 238th retrohun 824 71 9ms 10 Jan 2025 239th DialFrost 🇸🇬 822 82 115ms 23 Jun 2025 240th MeWhenI 🇻🇦 822 92 11ms 24 Dec 2024 First Prev 161–240 of 912 Next Last