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 Trinomial Triangle 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 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 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 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 Turtle Tutorial # Golfer Points Bytes Time Submitted 76th edsrzf 🇳🇿 888 89 2ms 30 Aug 2025 77th kgolf 887 32 3ms 15 Apr 2025 78th canissimia 🇦🇶 886 66 9ms 1 Oct 2024 79th JayXon 🇺🇸 886 79 2ms 5 Oct 2024 79th rucin93 🇵🇱 886 79 3ms 24 Oct 2024 79th sean-niemann 🇺🇸 886 79 2ms 3 Nov 2024 82nd JayXon 🇺🇸 886 134 332ms 3 Oct 2024 83rd MeWhenI 🇻🇦 885 64 946ms 3 Oct 2024 84th nwellnhof 🇩🇪 885 90 93ms 1 Oct 2024 84th ovs-code 🇩🇪 885 90 22ms 3 Oct 2024 84th kg583 🇺🇸 885 90 17ms 9 Oct 2024 84th sean-niemann 🇺🇸 885 90 28ms 23 Dec 2024 84th ryyyn 🇺🇸 885 90 20ms 26 Jul 2025 89th error256 884 68 1,057ms 2 May 2025 90th MeWhenI 🇻🇦 883 54 38ms 3 Oct 2024 90th error256 883 54 42ms 7 Oct 2024 90th nwellnhof 🇩🇪 883 54 48ms 13 Oct 2024 93rd nwellnhof 🇩🇪 883 105 471ms 27 days ago 94th dmrichwa 🇺🇸 881 73 10ms 5 Oct 2024 94th DialFrost 🇸🇬 881 73 10ms 12 Oct 2024 96th lyphyser 879 41 51ms 1 Oct 2024 97th nwellnhof 🇩🇪 879 135 324ms 16 Oct 2024 98th GrayJoKing 🇦🇺 878 90 2ms 3 Oct 2024 98th FlyingPenguin223 878 90 2ms 16 Oct 2024 100th acotis 877 106 171ms 29 May 2025 101st rhdqor213 876 80 2ms 2 Oct 2024 101st KasperKivimaeki 🇫🇮 876 80 2ms 16 Oct 2024 103rd JayXon 🇺🇸 875 79 105ms 17 Oct 2024 104th edsrzf 🇳🇿 875 80 2ms 26 Jul 2025 105th 5cw 🇺🇸 875 91 15ms 1 Oct 2024 105th stefangimmillaro 875 91 22ms 13 Oct 2024 105th duckyluuk 🇳🇱 875 91 23ms 18 Oct 2024 105th GrayJoKing 🇦🇺 875 91 20ms 2 Jul 2025 109th sean-niemann 🇺🇸 874 76 2,618ms 24 Oct 2024 110th JayXon 🇺🇸 874 95 505ms 23 Jul 2025 111th AlephSquirrel 870 76 539ms 1 Oct 2024 112th JayXon 🇺🇸 870 93 128ms 14 Oct 2024 113th edsrzf 🇳🇿 870 115 15ms 24 Jul 2025 114th Natanaelel 🇸🇪 869 74 12ms 1 Oct 2024 114th helbling 🇨🇭 869 74 12ms 1 Oct 2024 114th Irratix 🇳🇱 869 74 10ms 14 Oct 2024 114th emgordon154 869 74 13ms 18 Nov 2024 118th JayXon 🇺🇸 869 117 2ms 5 Oct 2024 119th Shanethegamer 🇺🇸 868 91 2ms 4 Oct 2024 120th error256 868 109 10ms 24 Jul 2025 120th edsrzf 🇳🇿 868 109 8ms 24 Jul 2025 122nd pardouin 🇫🇷 867 55 42ms 3 Oct 2024 122nd ovs-code 🇩🇪 867 55 39ms 5 Oct 2024 124th JayXon 🇺🇸 866 84 108ms 24 May 2025 125th ovs-code 🇩🇪 866 127 164ms 2 Oct 2024 126th ovs-code 🇩🇪 865 69 4ms 4 Oct 2024 127th UnderKoen 🇳🇱 865 86 5ms 4 Oct 2024 128th Shanethegamer 🇺🇸 865 92 18ms 3 Oct 2024 128th error256 865 92 26ms 7 Oct 2024 128th thatbirdguythatuknownot 865 92 17ms 14 Oct 2024 131st sean-niemann 🇺🇸 864 51 3ms 2 Oct 2024 132nd ovs-code 🇩🇪 864 78 114ms 2 Oct 2024 133rd emgordon154 863 77 2,649ms 8 Nov 2024 134th ovs-code 🇩🇪 862 29 45ms 4 Oct 2024 135th Natanaelel 🇸🇪 860 33 2ms 6 Oct 2024 135th GrayJoKing 🇦🇺 860 33 2ms 6 Jun 2025 135th SirBogman 🇺🇸 860 33 3ms 8 Jul 2025 138th nwellnhof 🇩🇪 860 68 10ms 5 Oct 2024 139th zacjl 860 110 10ms 10 Oct 2024 140th pardouin 🇫🇷 859 66 1,028ms 10 Apr 2025 141st voytxt 🇨🇿 857 75 10ms 1 Oct 2024 141st MeWhenI 🇻🇦 857 75 13ms 2 Oct 2024 141st m-tkach 🇺🇦 857 75 10ms 5 Oct 2024 141st error256 857 75 12ms 7 Oct 2024 145th tomtheisen 🇺🇸 856 83 385ms 10 Feb 2025 146th Bulmenisaurus 856 93 19ms 6 Oct 2024 146th lynn 856 93 17ms 8 Jan 2025 148th xsot 🇸🇬 855 82 2ms 6 May 2025 149th m-tkach 🇺🇦 855 87 5ms 6 Oct 2024 150th JayXon 🇺🇸 855 104 6 Oct 2024 First Prev 76–150 of 783 Next Last