Card Number Validation in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 F# Factor Forth Fortran Gleam Go GolfScript 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 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 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Topological Sort Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 76th MeWhenI 🇻🇦 883 54 3 Oct 2024 76th error256 883 54 7 Oct 2024 76th nwellnhof 🇩🇪 883 54 13 Oct 2024 79th JayXon 🇺🇸 883 79 5 Oct 2024 79th rucin93 🇵🇱 883 79 24 Oct 2024 79th sean-niemann 🇺🇸 883 79 3 Nov 2024 82nd nwellnhof 🇩🇪 883 90 1 Oct 2024 82nd ovs-code 🇩🇪 883 90 3 Oct 2024 82nd kg583 🇺🇸 883 90 9 Oct 2024 82nd sean-niemann 🇺🇸 883 90 23 Dec 2024 86th JayXon 🇺🇸 882 134 3 Oct 2024 87th lyphyser 879 41 1 Oct 2024 88th dmrichwa 🇺🇸 879 73 5 Oct 2024 88th DialFrost 🇸🇬 879 73 12 Oct 2024 90th acotis 877 106 29 May 2025 91st GrayJoKing 🇦🇺 876 90 3 Oct 2024 91st FlyingPenguin223 876 90 16 Oct 2024 93rd JayXon 🇺🇸 875 79 17 Oct 2024 94th rhdqor213 875 80 2 Oct 2024 94th KasperKivimaeki 🇫🇮 875 80 16 Oct 2024 96th nwellnhof 🇩🇪 875 133 7 Oct 2024 97th nwellnhof 🇩🇪 875 135 16 Oct 2024 98th sean-niemann 🇺🇸 874 76 24 Oct 2024 99th JayXon 🇺🇸 874 95 2 days ago 100th 5cw 🇺🇸 873 91 1 Oct 2024 100th stefangimmillaro 873 91 13 Oct 2024 100th duckyluuk 🇳🇱 873 91 18 Oct 2024 100th GrayJoKing 🇦🇺 873 91 22 days ago 100th ryyyn 🇺🇸 873 91 17 days ago 105th edsrzf 🇳🇿 870 115 25 hours ago 106th JayXon 🇺🇸 869 117 5 Oct 2024 107th Natanaelel 🇸🇪 868 74 1 Oct 2024 107th helbling 🇨🇭 868 74 1 Oct 2024 107th Irratix 🇳🇱 868 74 14 Oct 2024 107th emgordon154 868 74 18 Nov 2024 111th pardouin 🇫🇷 867 55 3 Oct 2024 111th ovs-code 🇩🇪 867 55 5 Oct 2024 113th AlephSquirrel 867 76 1 Oct 2024 114th JayXon 🇺🇸 866 84 24 May 2025 115th Shanethegamer 🇺🇸 866 91 4 Oct 2024 115th edsrzf 🇳🇿 866 91 30 hours ago 117th JayXon 🇺🇸 866 93 14 Oct 2024 118th ovs-code 🇩🇪 866 127 2 Oct 2024 119th ovs-code 🇩🇪 865 69 4 Oct 2024 120th UnderKoen 🇳🇱 865 86 4 Oct 2024 121st ovs-code 🇩🇪 864 78 2 Oct 2024 122nd Shanethegamer 🇺🇸 864 92 3 Oct 2024 122nd error256 864 92 7 Oct 2024 122nd thatbirdguythatuknownot 864 92 14 Oct 2024 125th error256 864 109 27 hours ago 125th edsrzf 🇳🇿 864 109 25 hours ago 127th emgordon154 863 77 8 Nov 2024 128th ovs-code 🇩🇪 862 29 4 Oct 2024 129th sean-niemann 🇺🇸 861 51 2 Oct 2024 130th Natanaelel 🇸🇪 860 33 6 Oct 2024 130th GrayJoKing 🇦🇺 860 33 6 Jun 2025 130th SirBogman 🇺🇸 860 33 16 days ago 133rd nwellnhof 🇩🇪 860 68 5 Oct 2024 134th pardouin 🇫🇷 859 66 10 Apr 2025 135th voytxt 🇨🇿 856 75 1 Oct 2024 135th MeWhenI 🇻🇦 856 75 2 Oct 2024 135th m-tkach 🇺🇦 856 75 5 Oct 2024 135th error256 856 75 7 Oct 2024 139th zacjl 856 110 10 Oct 2024 140th m-tkach 🇺🇦 855 87 6 Oct 2024 141st MeWhenI 🇻🇦 854 92 24 Dec 2024 142nd Bulmenisaurus 854 93 6 Oct 2024 142nd lynn 854 93 8 Jan 2025 144th xsot 🇸🇬 853 82 6 May 2025 145th tomtheisen 🇺🇸 853 83 10 Feb 2025 145th namelessiw 853 83 30 hours ago 147th JayXon 🇺🇸 853 95 4 Oct 2024 148th ovs-code 🇩🇪 851 46 4 Oct 2024 148th nwellnhof 🇩🇪 851 46 7 Oct 2024 150th edsrzf 🇳🇿 850 86 24 hours ago Prev 76–150 of 721 Next