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 3 days ago 179th marshallward 🇺🇸 853 127 45ms 4 hours ago 180th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 181st MostParsingVex 850 100 1,024ms 1 Oct 2024 182nd DialFrost 🇸🇬 849 94 18ms 1 Oct 2024 182nd ndren 849 94 16ms 14 Feb 2025 182nd anter69 🇭🇺 849 94 16ms 25 Feb 2026 185th error256 849 106 94ms 8 Oct 2024 186th kg583 🇺🇸 849 143 40ms 20 Feb 2026 186th edsrzf 🇳🇿 849 143 43ms 14 days ago 188th emgordon154 848 67 1,283ms 18 Nov 2024 189th Lv0Sys 🇵🇱 848 76 9ms 22 Feb 2026 190th m-tkach 🇺🇦 848 144 79ms 8 Oct 2024 191st edsrzf 🇳🇿 847 107 1,321ms 3 days ago 192nd primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 193rd lynn 846 131 138ms 8 Jan 2025 193rd edsrzf 🇳🇿 846 131 175ms 9 days ago 195th KasperKivimaeki 🇫🇮 845 141 290ms 9 Oct 2025 196th error256 844 94 2ms 7 Oct 2024 197th KasperKivimaeki 🇫🇮 844 103 453ms 8 Dec 2025 198th IanUtley 844 113 19ms 2 Oct 2024 199th sean-niemann 🇺🇸 844 114 41ms 2 Oct 2024 200th sean-niemann 🇺🇸 844 121 2ms 30 Nov 2024 200th edsrzf 🇳🇿 844 121 3ms 21 Feb 2026 202nd edsrzf 🇳🇿 843 98 7ms 25 Feb 2026 203rd nwellnhof 🇩🇪 842 84 2ms 2 Oct 2024 203rd ovs-code 🇩🇪 842 84 1ms 2 Nov 2024 203rd inventshah 842 84 2ms 31 Mar 2025 206th emplv 🇱🇻 842 145 25ms 24 Oct 2024 207th xsot 🇸🇬 840 57 35ms 6 May 2025 208th kg583 🇺🇸 840 84 5ms 9 days ago 209th moustave 840 95 20ms 4 Nov 2024 209th emgordon154 840 95 17ms 18 Nov 2024 211th GrayJoKing 🇦🇺 839 47 6ms 1 Oct 2024 211th Steffan153 🇫🇮 839 47 6ms 16 Feb 2026 213th emplv 🇱🇻 839 142 287ms 2 Oct 2024 213th sean-niemann 🇺🇸 839 142 275ms 2 Oct 2024 215th edsrzf 🇳🇿 838 131 28ms 10 Feb 2026 216th Shanethegamer 🇺🇸 837 77 11ms 1 Oct 2024 216th biocommando 🇫🇮 837 77 10ms 13 Jun 2025 218th edsrzf 🇳🇿 837 83 103ms 21 Feb 2026 219th snoozingnewt 🇨🇦 837 92 112ms 18 Dec 2025 220th stefangimmillaro 837 112 139ms 4 Oct 2024 221st kg583 🇺🇸 837 113 8ms 20 Feb 2026 222nd stefangimmillaro 836 68 1,290ms 2 Oct 2024 223rd sean-niemann 🇺🇸 836 81 10ms 20 Dec 2024 223rd Steffan153 🇫🇮 836 81 11ms 11 Feb 2026 225th edsrzf 🇳🇿 835 115 3ms 19 Dec 2025 226th stefangimmillaro 834 80 2,549ms 12 Nov 2024 227th edsrzf 🇳🇿 833 108 88ms 26 Jul 2025 228th MeWhenI 🇻🇦 833 130 40ms 3 Oct 2024 229th MeWhenI 🇻🇦 833 143 304ms 2 Oct 2024 230th ovs-code 🇩🇪 833 200 1,405ms 19 Apr 2025 231st saito-ta 🇯🇵 832 85 1ms 1 Oct 2024 232nd JayXon 🇺🇸 832 155 1,904ms 3 Oct 2024 233rd MeWhenI 🇻🇦 831 96 17ms 30 Jul 2025 234th JayXon 🇺🇸 831 109 1,332ms 5 Oct 2024 235th emplv 🇱🇻 830 77 132ms 28 Mar 2025 236th kg583 🇺🇸 830 80 384ms 20 Feb 2026 237th nwellnhof 🇩🇪 828 105 448ms 22 Jan 2026 238th dcgjb 826 78 10ms 6 May 2025 239th edsrzf 🇳🇿 826 142 33ms 13 days ago 240th m-tkach 🇺🇦 825 58 38ms 8 Oct 2024 First Prev 161–240 of 930 Next Last