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 161st voytxt 🇨🇿 860 75 10ms 1 Oct 2024 161st MeWhenI 🇻🇦 860 75 10ms 2 Oct 2024 161st m-tkach 🇺🇦 860 75 10ms 5 Oct 2024 161st error256 860 75 10ms 7 Oct 2024 165th tomtheisen 🇺🇸 860 83 440ms 10 Feb 2025 166th JayXon 🇺🇸 859 95 445ms 4 Oct 2024 167th Bulmenisaurus 858 93 17ms 6 Oct 2024 167th lynn 858 93 16ms 8 Jan 2025 167th CornerMercury 🇬🇧 858 93 16ms 23 Nov 2025 167th KasperKivimaeki 🇫🇮 858 93 17ms 30 Nov 2025 167th blaztoma 🇱🇹 858 93 17ms 18 Dec 2025 172nd ovs-code 🇩🇪 857 46 5ms 4 Oct 2024 172nd nwellnhof 🇩🇪 857 46 4ms 7 Oct 2024 174th stefangimmillaro 857 139 287ms 3 Oct 2024 175th edsrzf 🇳🇿 856 90 104ms 18 Dec 2025 176th sean-niemann 🇺🇸 855 56 38ms 8 Aug 2025 177th m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 178th edsrzf 🇳🇿 854 143 29ms 13 hours ago 179th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 180th MostParsingVex 850 100 1,024ms 1 Oct 2024 181st error256 849 106 94ms 8 Oct 2024 182nd kg583 🇺🇸 849 143 40ms 20 Feb 2026 182nd edsrzf 🇳🇿 849 143 43ms 11 days ago 184th emgordon154 848 67 1,283ms 18 Nov 2024 185th Lv0Sys 🇵🇱 848 76 9ms 22 Feb 2026 186th DialFrost 🇸🇬 848 94 18ms 1 Oct 2024 186th ndren 848 94 16ms 14 Feb 2025 186th anter69 🇭🇺 848 94 16ms 25 Feb 2026 189th m-tkach 🇺🇦 848 144 79ms 8 Oct 2024 190th edsrzf 🇳🇿 847 107 1,321ms 8 hours ago 191st primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 192nd lynn 846 131 138ms 8 Jan 2025 192nd edsrzf 🇳🇿 846 131 156ms 6 days ago 194th KasperKivimaeki 🇫🇮 845 141 290ms 9 Oct 2025 195th error256 844 94 2ms 7 Oct 2024 196th KasperKivimaeki 🇫🇮 844 103 453ms 8 Dec 2025 197th IanUtley 844 113 19ms 2 Oct 2024 198th sean-niemann 🇺🇸 844 114 41ms 2 Oct 2024 199th sean-niemann 🇺🇸 844 121 2ms 30 Nov 2024 199th edsrzf 🇳🇿 844 121 3ms 21 Feb 2026 201st edsrzf 🇳🇿 843 98 7ms 25 Feb 2026 202nd emplv 🇱🇻 842 145 25ms 24 Oct 2024 203rd nwellnhof 🇩🇪 841 84 2ms 2 Oct 2024 203rd ovs-code 🇩🇪 841 84 1ms 2 Nov 2024 203rd inventshah 841 84 2ms 31 Mar 2025 206th xsot 🇸🇬 840 57 35ms 6 May 2025 207th kg583 🇺🇸 840 84 5ms 6 days ago 208th moustave 840 95 20ms 4 Nov 2024 208th emgordon154 840 95 17ms 18 Nov 2024 210th GrayJoKing 🇦🇺 839 47 6ms 1 Oct 2024 210th Steffan153 🇫🇮 839 47 6ms 16 Feb 2026 212th emplv 🇱🇻 839 142 287ms 2 Oct 2024 212th sean-niemann 🇺🇸 839 142 275ms 2 Oct 2024 214th edsrzf 🇳🇿 838 131 28ms 10 Feb 2026 215th Shanethegamer 🇺🇸 837 77 11ms 1 Oct 2024 215th biocommando 🇫🇮 837 77 10ms 13 Jun 2025 217th edsrzf 🇳🇿 837 83 103ms 21 Feb 2026 218th snoozingnewt 🇨🇦 837 92 112ms 18 Dec 2025 219th kg583 🇺🇸 837 113 8ms 20 Feb 2026 220th stefangimmillaro 836 68 1,290ms 2 Oct 2024 221st sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 221st Steffan153 🇫🇮 836 81 11ms 11 Feb 2026 223rd stefangimmillaro 836 112 139ms 4 Oct 2024 224th edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 225th stefangimmillaro 834 80 2,549ms 12 Nov 2024 226th edsrzf 🇳🇿 833 108 88ms 26 Jul 2025 227th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 228th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 229th ovs-code 🇩🇪 833 200 1,405ms 19 Apr 2025 230th JayXon 🇺🇸 832 155 1,904ms 3 Oct 2024 231st saito-ta 🇯🇵 831 85 1ms 1 Oct 2024 232nd MeWhenI 🇻🇦 831 96 17ms 30 Jul 2025 233rd JayXon 🇺🇸 831 109 1,332ms 5 Oct 2024 234th emplv 🇱🇻 830 77 132ms 28 Mar 2025 235th kg583 🇺🇸 829 80 384ms 20 Feb 2026 236th nwellnhof 🇩🇪 828 105 448ms 22 Jan 2026 237th dcgjb 826 78 10ms 6 May 2025 238th edsrzf 🇳🇿 826 142 33ms 10 days ago 239th m-tkach 🇺🇦 825 58 38ms 8 Oct 2024 240th stefangimmillaro 825 99 129ms 3 Oct 2024 First Prev 161–240 of 922 Next Last