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 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang 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 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang 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 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 76th JayXon 🇺🇸 886 79 5 Oct 2024 76th rucin93 🇵🇱 886 79 24 Oct 2024 76th sean-niemann 🇺🇸 886 79 3 Nov 2024 79th nwellnhof 🇩🇪 886 80 2 Oct 2024 79th Yax42 🇫🇷 886 80 7 Feb 2025 81st edsrzf 🇳🇿 886 89 26 days ago 82nd error256 886 116 4 hours ago 83rd MeWhenI 🇻🇦 885 64 3 Oct 2024 84th error256 884 68 2 May 2025 85th nwellnhof 🇩🇪 884 90 1 Oct 2024 85th ovs-code 🇩🇪 884 90 3 Oct 2024 85th kg583 🇺🇸 884 90 9 Oct 2024 85th sean-niemann 🇺🇸 884 90 23 Dec 2024 85th ryyyn 🇺🇸 884 90 26 Jul 2025 90th MeWhenI 🇻🇦 883 54 3 Oct 2024 90th error256 883 54 7 Oct 2024 90th nwellnhof 🇩🇪 883 54 13 Oct 2024 93rd JayXon 🇺🇸 882 134 3 Oct 2024 94th dmrichwa 🇺🇸 881 73 5 Oct 2024 94th DialFrost 🇸🇬 881 73 12 Oct 2024 96th lyphyser 879 41 1 Oct 2024 97th edsrzf 🇳🇿 878 117 8 hours ago 98th acotis 877 106 29 May 2025 99th GrayJoKing 🇦🇺 876 90 3 Oct 2024 99th FlyingPenguin223 876 90 16 Oct 2024 101st JayXon 🇺🇸 875 79 17 Oct 2024 102nd rhdqor213 875 80 2 Oct 2024 102nd KasperKivimaeki 🇫🇮 875 80 16 Oct 2024 102nd edsrzf 🇳🇿 875 80 26 Jul 2025 105th nwellnhof 🇩🇪 875 135 16 Oct 2024 106th sean-niemann 🇺🇸 874 76 24 Oct 2024 107th 5cw 🇺🇸 874 91 1 Oct 2024 107th stefangimmillaro 874 91 13 Oct 2024 107th duckyluuk 🇳🇱 874 91 18 Oct 2024 107th GrayJoKing 🇦🇺 874 91 2 Jul 2025 111th JayXon 🇺🇸 874 95 23 Jul 2025 112th JayXon 🇺🇸 870 93 14 Oct 2024 113th edsrzf 🇳🇿 870 115 24 Jul 2025 114th Natanaelel 🇸🇪 869 74 1 Oct 2024 114th helbling 🇨🇭 869 74 1 Oct 2024 114th Irratix 🇳🇱 869 74 14 Oct 2024 114th emgordon154 869 74 18 Nov 2024 118th AlephSquirrel 869 76 1 Oct 2024 119th JayXon 🇺🇸 869 117 5 Oct 2024 120th error256 868 109 24 Jul 2025 120th edsrzf 🇳🇿 868 109 24 Jul 2025 122nd pardouin 🇫🇷 867 55 3 Oct 2024 122nd ovs-code 🇩🇪 867 55 5 Oct 2024 124th JayXon 🇺🇸 866 84 24 May 2025 125th Shanethegamer 🇺🇸 866 91 4 Oct 2024 126th ovs-code 🇩🇪 866 127 2 Oct 2024 127th ovs-code 🇩🇪 865 69 4 Oct 2024 128th UnderKoen 🇳🇱 865 86 4 Oct 2024 129th Shanethegamer 🇺🇸 865 92 3 Oct 2024 129th error256 865 92 7 Oct 2024 129th thatbirdguythatuknownot 865 92 14 Oct 2024 132nd sean-niemann 🇺🇸 864 51 2 Oct 2024 133rd ovs-code 🇩🇪 864 78 2 Oct 2024 134th emgordon154 863 77 8 Nov 2024 135th ovs-code 🇩🇪 862 29 4 Oct 2024 136th Natanaelel 🇸🇪 860 33 6 Oct 2024 136th GrayJoKing 🇦🇺 860 33 6 Jun 2025 136th SirBogman 🇺🇸 860 33 8 Jul 2025 139th nwellnhof 🇩🇪 860 68 5 Oct 2024 140th zacjl 860 110 10 Oct 2024 141st pardouin 🇫🇷 859 66 10 Apr 2025 142nd voytxt 🇨🇿 857 75 1 Oct 2024 142nd MeWhenI 🇻🇦 857 75 2 Oct 2024 142nd m-tkach 🇺🇦 857 75 5 Oct 2024 142nd error256 857 75 7 Oct 2024 146th Bulmenisaurus 856 93 6 Oct 2024 146th lynn 856 93 8 Jan 2025 148th Shanethegamer 🇺🇸 856 120 6 hours ago 149th m-tkach 🇺🇦 855 87 6 Oct 2024 150th tomtheisen 🇺🇸 854 83 10 Feb 2025 Prev 76–150 of 759 Next