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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 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 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 Calendar 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi 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 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 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 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 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 Calendar 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 76th MeWhenI 🇻🇦 888 64 946ms 3 Oct 2024 77th nwellnhof 🇩🇪 888 105 339ms 25 Sep 2025 78th JayXon 🇺🇸 888 134 261ms 3 Oct 2024 79th kgolf 887 32 3ms 15 Apr 2025 80th rucin93 🇵🇱 887 78 2ms 9 days ago 80th JayXon 🇺🇸 887 78 2ms 9 days ago 80th sean-niemann 🇺🇸 887 78 2ms 9 days ago 83rd canissimia 🇦🇶 886 66 9ms 1 Oct 2024 84th moustave 885 73 22ms 5 Nov 2024 84th emgordon154 885 73 16ms 18 Nov 2024 86th MeWhenI 🇻🇦 884 54 38ms 3 Oct 2024 86th error256 884 54 42ms 7 Oct 2024 86th nwellnhof 🇩🇪 884 54 48ms 13 Oct 2024 86th sean-niemann 🇺🇸 884 54 37ms 12 Oct 2025 90th error256 884 68 1,057ms 2 May 2025 91st dmrichwa 🇺🇸 881 73 10ms 5 Oct 2024 91st DialFrost 🇸🇬 881 73 10ms 12 Oct 2024 93rd GrayJoKing 🇦🇺 881 90 2ms 3 Oct 2024 93rd FlyingPenguin223 881 90 2ms 16 Oct 2024 95th nwellnhof 🇩🇪 881 135 254ms 16 Oct 2024 96th acotis 880 106 166ms 29 May 2025 97th KasperKivimaeki 🇫🇮 879 80 2ms 16 Oct 2024 98th ovs-code 🇩🇪 878 69 3ms 4 Oct 2024 98th edsrzf 🇳🇿 878 69 4ms 18 days ago 100th JayXon 🇺🇸 878 93 108ms 14 Oct 2024 101st JayXon 🇺🇸 877 95 365ms 23 Jul 2025 102nd edsrzf 🇳🇿 876 79 2ms 9 days ago 103rd edsrzf 🇳🇿 876 91 6ms 16 Aug 2025 104th JayXon 🇺🇸 875 79 101ms 17 Oct 2024 105th sean-niemann 🇺🇸 874 76 2,902ms 24 Oct 2024 106th albanian-laundromat 873 74 17ms 25 days ago 107th edsrzf 🇳🇿 873 115 15ms 24 Jul 2025 108th JayXon 🇺🇸 871 84 108ms 24 May 2025 109th Shanethegamer 🇺🇸 871 91 2ms 4 Oct 2024 110th ovs-code 🇩🇪 870 127 164ms 2 Oct 2024 111th Natanaelel 🇸🇪 869 74 9ms 1 Oct 2024 111th helbling 🇨🇭 869 74 9ms 1 Oct 2024 111th Irratix 🇳🇱 869 74 10ms 14 Oct 2024 111th emgordon154 869 74 9ms 18 Nov 2024 115th JayXon 🇺🇸 869 117 2ms 5 Oct 2024 116th ovs-code 🇩🇪 868 55 39ms 5 Oct 2024 117th DialFrost 🇸🇬 868 74 99ms 17 Mar 2025 118th sean-niemann 🇺🇸 866 51 3ms 2 Oct 2024 119th UnderKoen 🇳🇱 865 86 5ms 4 Oct 2024 120th JayXon 🇺🇸 865 104 79ms 6 Oct 2024 121st GrayJoKing 🇦🇺 864 87 10ms 3 days ago 122nd emgordon154 863 77 3,120ms 8 Nov 2024 123rd ovs-code 🇩🇪 862 29 45ms 4 Oct 2024 124th pardouin 🇫🇷 861 66 1,028ms 10 Apr 2025 125th anter69 🇭🇺 861 75 16ms 11 Oct 2024 126th Natanaelel 🇸🇪 860 33 2ms 6 Oct 2024 126th GrayJoKing 🇦🇺 860 33 2ms 6 Jun 2025 126th SirBogman 🇺🇸 860 33 2ms 8 Jul 2025 129th nwellnhof 🇩🇪 860 68 10ms 5 Oct 2024 130th kg583 🇺🇸 858 67 390ms 1 Oct 2024 131st voytxt 🇨🇿 858 75 9ms 1 Oct 2024 131st MeWhenI 🇻🇦 858 75 9ms 2 Oct 2024 131st m-tkach 🇺🇦 858 75 9ms 5 Oct 2024 131st error256 858 75 9ms 7 Oct 2024 135th xsot 🇸🇬 858 82 2ms 6 May 2025 136th tomtheisen 🇺🇸 858 83 382ms 10 Feb 2025 137th edsrzf 🇳🇿 858 86 4ms 24 Jul 2025 138th stefangimmillaro 856 139 259ms 3 Oct 2024 138th edsrzf 🇳🇿 856 139 257ms 23 Jul 2025 140th m-tkach 🇺🇦 855 87 5ms 6 Oct 2024 141st ovs-code 🇩🇪 853 46 5ms 4 Oct 2024 141st nwellnhof 🇩🇪 853 46 5ms 7 Oct 2024 143rd JayXon 🇺🇸 853 95 424ms 4 Oct 2024 144th sean-niemann 🇺🇸 852 68 121ms 1 Oct 2024 145th lifthrasiir 🇰🇷 850 76 11ms 16 Nov 2024 146th MostParsingVex 850 100 17ms 1 Oct 2024 147th edsrzf 🇳🇿 850 137 45ms 16 Aug 2025 148th error256 849 106 82ms 8 Oct 2024 149th emgordon154 848 67 1,010ms 18 Nov 2024 150th kg583 🇺🇸 848 94 6ms 17 Oct 2025 First Prev 76–150 of 829 Next Last