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Card Number Validation in all languages in chars. 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 81st rucin93 🇵🇱 887 78 2ms 18 Nov 2025 81st JayXon 🇺🇸 887 78 2ms 19 Nov 2025 81st sean-niemann 🇺🇸 887 78 2ms 19 Nov 2025 84th canissimia 🇦🇶 886 66 8ms 1 Oct 2024 84th error256 886 66 953ms 10 Dec 2025 86th MeWhenI 🇻🇦 885 54 35ms 3 Oct 2024 86th error256 885 54 38ms 7 Oct 2024 86th nwellnhof 🇩🇪 885 54 38ms 13 Oct 2024 86th sean-niemann 🇺🇸 885 54 37ms 12 Oct 2025 90th moustave 885 73 20ms 5 Nov 2024 90th emgordon154 885 73 16ms 18 Nov 2024 92nd nwellnhof 🇩🇪 883 135 247ms 16 Oct 2024 93rd dmrichwa 🇺🇸 882 73 10ms 5 Oct 2024 93rd DialFrost 🇸🇬 882 73 9ms 12 Oct 2024 95th GrayJoKing 🇦🇺 880 90 2ms 3 Oct 2024 95th FlyingPenguin223 880 90 2ms 16 Oct 2024 97th acotis 880 106 139ms 29 May 2025 98th ovs-code 🇩🇪 878 69 4ms 4 Oct 2024 98th edsrzf 🇳🇿 878 69 3ms 10 Nov 2025 100th sean-niemann 🇺🇸 878 76 3,192ms 24 Oct 2024 101st JayXon 🇺🇸 878 93 108ms 14 Oct 2024 102nd JayXon 🇺🇸 877 95 374ms 23 Jul 2025 103rd edsrzf 🇳🇿 876 79 2ms 18 Nov 2025 104th JayXon 🇺🇸 876 84 120ms 24 May 2025 105th edsrzf 🇳🇿 876 91 7ms 16 Aug 2025 106th JayXon 🇺🇸 875 79 119ms 17 Oct 2024 107th edsrzf 🇳🇿 874 113 6ms 25 hours ago 108th albanian-laundromat 873 74 17ms 3 Nov 2025 108th plcc0 873 74 17ms 18 days ago 110th ovs-code 🇩🇪 873 127 127ms 2 Oct 2024 111th sean-niemann 🇺🇸 871 66 482ms 30 Dec 2025 112th Natanaelel 🇸🇪 870 74 9ms 1 Oct 2024 112th helbling 🇨🇭 870 74 9ms 1 Oct 2024 112th Irratix 🇳🇱 870 74 9ms 14 Oct 2024 112th emgordon154 870 74 10ms 18 Nov 2024 116th KasperKivimaeki 🇫🇮 870 79 2ms 6 Dec 2025 117th Shanethegamer 🇺🇸 870 91 2ms 4 Oct 2024 118th ovs-code 🇩🇪 869 55 39ms 5 Oct 2024 119th JayXon 🇺🇸 869 117 2ms 5 Oct 2024 120th DialFrost 🇸🇬 868 74 105ms 17 Mar 2025 121st emgordon154 867 77 3,123ms 8 Nov 2024 122nd UnderKoen 🇳🇱 865 86 7ms 4 Oct 2024 123rd JayXon 🇺🇸 865 104 89ms 6 Oct 2024 124th GrayJoKing 🇦🇺 864 87 12ms 25 Nov 2025 125th edsrzf 🇳🇿 864 138 259ms 19 Dec 2025 126th ovs-code 🇩🇪 862 29 40ms 4 Oct 2024 127th pardouin 🇫🇷 861 66 1,435ms 10 Apr 2025 128th anter69 🇭🇺 861 75 16ms 11 Oct 2024 129th Natanaelel 🇸🇪 860 33 2ms 6 Oct 2024 129th GrayJoKing 🇦🇺 860 33 2ms 6 Jun 2025 129th SirBogman 🇺🇸 860 33 2ms 8 Jul 2025 132nd nwellnhof 🇩🇪 860 68 9ms 5 Oct 2024 133rd tomtheisen 🇺🇸 860 83 443ms 10 Feb 2025 134th kg583 🇺🇸 858 67 416ms 1 Oct 2024 135th voytxt 🇨🇿 858 75 10ms 1 Oct 2024 135th MeWhenI 🇻🇦 858 75 16ms 2 Oct 2024 135th m-tkach 🇺🇦 858 75 9ms 5 Oct 2024 135th error256 858 75 11ms 7 Oct 2024 139th edsrzf 🇳🇿 858 86 4ms 24 Jul 2025 140th stefangimmillaro 857 139 255ms 3 Oct 2024 141st edsrzf 🇳🇿 856 90 128ms 18 Dec 2025 142nd ovs-code 🇩🇪 855 46 4ms 4 Oct 2024 142nd nwellnhof 🇩🇪 855 46 4ms 7 Oct 2024 144th m-tkach 🇺🇦 855 87 7ms 6 Oct 2024 145th JayXon 🇺🇸 853 95 424ms 4 Oct 2024 146th sean-niemann 🇺🇸 852 51 2ms 2 Oct 2024 147th sean-niemann 🇺🇸 852 68 131ms 1 Oct 2024 148th lifthrasiir 🇰🇷 850 76 10ms 16 Nov 2024 148th snoozingnewt 🇨🇦 850 76 10ms 6 Dec 2025 150th MostParsingVex 850 100 1,024ms 1 Oct 2024 151st edsrzf 🇳🇿 850 137 44ms 16 Aug 2025 152nd error256 849 106 85ms 8 Oct 2024 153rd emgordon154 848 67 1,283ms 18 Nov 2024 154th kg583 🇺🇸 848 94 7ms 17 Oct 2025 155th primo-ppcg 🇹🇭 846 128 41ms 27 Apr 2025 156th lynn 846 131 138ms 8 Jan 2025 157th duckyluuk 🇳🇱 845 68 388ms 4 Oct 2024 158th KasperKivimaeki 🇫🇮 845 141 246ms 9 Oct 2025 159th IanUtley 844 113 18ms 2 Oct 2024 160th error256 842 94 2ms 7 Oct 2024 First Prev 81–160 of 866 Next Last