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 81st KasperKivimaeki 🇫🇮 896 79 2ms 6 Dec 2025 82nd ovs-code 🇩🇪 895 63 558ms 2 Oct 2024 83rd nwellnhof 🇩🇪 894 80 418ms 2 Oct 2024 83rd Yax42 🇫🇷 894 80 408ms 7 Feb 2025 85th canissimia 🇦🇶 893 28 40ms 2 Oct 2024 86th error256 893 60 1,103ms 1 Feb 2026 87th rucin93 🇵🇱 892 78 2ms 18 Nov 2025 87th JayXon 🇺🇸 892 78 2ms 19 Nov 2025 87th sean-niemann 🇺🇸 892 78 2ms 19 Nov 2025 87th edsrzf 🇳🇿 892 78 2ms 20 Feb 2026 87th Steffan153 🇫🇮 892 78 2ms 20 Feb 2026 92nd JayXon 🇺🇸 891 134 341ms 3 Oct 2024 93rd MeWhenI 🇻🇦 890 64 1,305ms 3 Oct 2024 94th nwellnhof 🇩🇪 890 105 627ms 25 Sep 2025 95th GrayJoKing 🇦🇺 889 60 4ms 3 Oct 2024 96th kgolf 888 32 3ms 15 Apr 2025 97th MeWhenI 🇻🇦 888 54 36ms 3 Oct 2024 97th error256 888 54 37ms 7 Oct 2024 97th nwellnhof 🇩🇪 888 54 34ms 13 Oct 2024 97th blaztoma 🇱🇹 888 54 37ms 8 days ago 101st rucin93 🇵🇱 887 72 131ms 28 Feb 2026 101st Steffan153 🇫🇮 887 72 133ms 28 Feb 2026 103rd canissimia 🇦🇶 886 66 8ms 1 Oct 2024 104th nwellnhof 🇩🇪 886 90 20ms 1 Oct 2024 104th ovs-code 🇩🇪 886 90 18ms 3 Oct 2024 104th kg583 🇺🇸 886 90 18ms 9 Oct 2024 104th sean-niemann 🇺🇸 886 90 25ms 23 Dec 2024 104th firegene 🇮🇪 886 90 16ms 19 Feb 2026 104th lukegustafson 🇺🇸 886 90 18ms 25 Feb 2026 110th acotis 886 106 146ms 29 May 2025 111th nwellnhof 🇩🇪 885 135 328ms 16 Oct 2024 111th edsrzf 🇳🇿 885 135 303ms 21 Feb 2026 113th dmrichwa 🇺🇸 884 73 10ms 5 Oct 2024 113th DialFrost 🇸🇬 884 73 10ms 12 Oct 2024 115th lyphyser 883 41 55ms 1 Oct 2024 116th JayXon 🇺🇸 883 79 105ms 17 Oct 2024 117th GrayJoKing 🇦🇺 883 90 2ms 3 Oct 2024 117th FlyingPenguin223 883 90 2ms 16 Oct 2024 119th JayXon 🇺🇸 881 93 123ms 14 Oct 2024 120th sean-niemann 🇺🇸 880 76 2,440ms 24 Oct 2024 121st JayXon 🇺🇸 880 95 384ms 23 Jul 2025 122nd JayXon 🇺🇸 879 84 163ms 24 May 2025 123rd ovs-code 🇩🇪 878 69 4ms 4 Oct 2024 123rd edsrzf 🇳🇿 878 69 4ms 10 Nov 2025 125th 5cw 🇺🇸 877 91 17ms 1 Oct 2024 125th stefangimmillaro 877 91 22ms 13 Oct 2024 125th duckyluuk 🇳🇱 877 91 21ms 18 Oct 2024 125th GrayJoKing 🇦🇺 877 91 20ms 2 Jul 2025 129th xsot 🇸🇬 876 66 996ms 22 Feb 2026 130th JayXon 🇺🇸 876 117 2ms 5 Oct 2024 131st edsrzf 🇳🇿 875 110 7ms 25 days ago 132nd AlephSquirrel 874 76 483ms 1 Oct 2024 133rd edsrzf 🇳🇿 874 107 411ms 20 Feb 2026 134th Shanethegamer 🇺🇸 873 91 2ms 4 Oct 2024 135th ovs-code 🇩🇪 873 127 127ms 2 Oct 2024 136th pardouin 🇫🇷 872 55 37ms 3 Oct 2024 136th ovs-code 🇩🇪 872 55 36ms 5 Oct 2024 136th Steffan153 🇫🇮 872 55 39ms 16 Feb 2026 139th Natanaelel 🇸🇪 872 74 10ms 1 Oct 2024 139th helbling 🇨🇭 872 74 12ms 1 Oct 2024 139th Irratix 🇳🇱 872 74 12ms 14 Oct 2024 139th emgordon154 872 74 10ms 18 Nov 2024 143rd error256 872 109 9ms 24 Jul 2025 143rd edsrzf 🇳🇿 872 109 7ms 24 Jul 2025 143rd zacjl 872 109 9ms 19 days ago 146th ovs-code 🇩🇪 870 78 109ms 2 Oct 2024 147th JayXon 🇺🇸 870 104 84ms 6 Oct 2024 148th GrayJoKing 🇦🇺 869 87 11ms 25 Nov 2025 149th kumavale 869 108 151ms 10 days ago 150th emgordon154 868 77 2,568ms 8 Nov 2024 151st Shanethegamer 🇺🇸 867 92 18ms 3 Oct 2024 151st error256 867 92 23ms 7 Oct 2024 151st thatbirdguythatuknownot 867 92 20ms 14 Oct 2024 154th kg583 🇺🇸 867 111 7ms 20 Feb 2026 155th UnderKoen 🇳🇱 865 86 7ms 4 Oct 2024 156th JayXon 🇺🇸 865 95 445ms 4 Oct 2024 157th pardouin 🇫🇷 863 66 1,435ms 10 Apr 2025 158th xsot 🇸🇬 863 82 2ms 6 May 2025 159th ovs-code 🇩🇪 862 29 43ms 4 Oct 2024 160th tomtheisen 🇺🇸 862 83 437ms 10 Feb 2025 First Prev 81–160 of 964 Next Last