Card Number Validation in all languages in chars. 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime 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 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 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 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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 76th error256 884 68 2 May 2025 77th pardouin 🇫🇷 883 54 1 Oct 2024 77th MeWhenI 🇻🇦 883 54 3 Oct 2024 77th error256 883 54 7 Oct 2024 77th nwellnhof 🇩🇪 883 54 13 Oct 2024 81st moustave 883 73 5 Nov 2024 81st emgordon154 883 73 18 Nov 2024 83rd JayXon 🇺🇸 882 134 3 Oct 2024 84th dmrichwa 🇺🇸 880 73 5 Oct 2024 84th DialFrost 🇸🇬 880 73 12 Oct 2024 86th acotis 877 106 29 May 2025 87th nwellnhof 🇩🇪 877 133 7 Oct 2024 88th GrayJoKing 🇦🇺 876 90 3 Oct 2024 88th FlyingPenguin223 876 90 16 Oct 2024 88th edsrzf 🇳🇿 876 90 7 days ago 91st JayXon 🇺🇸 875 79 17 Oct 2024 92nd KasperKivimaeki 🇫🇮 875 80 16 Oct 2024 92nd edsrzf 🇳🇿 875 80 6 days ago 94th nwellnhof 🇩🇪 875 135 16 Oct 2024 95th sean-niemann 🇺🇸 874 76 24 Oct 2024 96th JayXon 🇺🇸 874 95 10 days ago 97th edsrzf 🇳🇿 870 115 9 days ago 98th JayXon 🇺🇸 869 117 5 Oct 2024 99th Natanaelel 🇸🇪 868 74 1 Oct 2024 99th helbling 🇨🇭 868 74 1 Oct 2024 99th Irratix 🇳🇱 868 74 14 Oct 2024 99th emgordon154 868 74 18 Nov 2024 99th DialFrost 🇸🇬 868 74 17 Mar 2025 104th ovs-code 🇩🇪 867 55 5 Oct 2024 105th JayXon 🇺🇸 866 84 24 May 2025 106th Shanethegamer 🇺🇸 866 91 4 Oct 2024 107th JayXon 🇺🇸 866 93 14 Oct 2024 108th ovs-code 🇩🇪 866 127 2 Oct 2024 109th ovs-code 🇩🇪 865 69 4 Oct 2024 110th UnderKoen 🇳🇱 865 86 4 Oct 2024 111th error256 864 109 9 days ago 111th edsrzf 🇳🇿 864 109 9 days ago 113th emgordon154 863 77 8 Nov 2024 114th ovs-code 🇩🇪 862 29 4 Oct 2024 115th sean-niemann 🇺🇸 861 51 2 Oct 2024 116th Natanaelel 🇸🇪 860 33 6 Oct 2024 116th GrayJoKing 🇦🇺 860 33 6 Jun 2025 116th SirBogman 🇺🇸 860 33 24 days ago 119th nwellnhof 🇩🇪 860 68 5 Oct 2024 120th pardouin 🇫🇷 859 66 10 Apr 2025 121st anter69 🇭🇺 859 75 11 Oct 2024 122nd voytxt 🇨🇿 856 75 1 Oct 2024 122nd MeWhenI 🇻🇦 856 75 2 Oct 2024 122nd m-tkach 🇺🇦 856 75 5 Oct 2024 122nd error256 856 75 7 Oct 2024 126th zacjl 856 110 10 Oct 2024 127th m-tkach 🇺🇦 855 87 6 Oct 2024 128th kg583 🇺🇸 854 67 1 Oct 2024 129th MeWhenI 🇻🇦 854 92 24 Dec 2024 130th xsot 🇸🇬 853 82 6 May 2025 131st tomtheisen 🇺🇸 853 83 10 Feb 2025 132nd JayXon 🇺🇸 853 95 4 Oct 2024 133rd sean-niemann 🇺🇸 852 68 1 Oct 2024 134th ovs-code 🇩🇪 851 46 4 Oct 2024 134th nwellnhof 🇩🇪 851 46 7 Oct 2024 136th edsrzf 🇳🇿 850 86 9 days ago 137th MostParsingVex 850 100 1 Oct 2024 138th stefangimmillaro 850 139 3 Oct 2024 138th edsrzf 🇳🇿 850 139 9 days ago 140th lifthrasiir 🇰🇷 848 76 16 Nov 2024 141st JayXon 🇺🇸 848 104 6 Oct 2024 142nd emgordon154 846 67 18 Nov 2024 143rd JayXon 🇺🇸 846 155 3 Oct 2024 144th AdrienHache 🇫🇷 843 84 9 days ago 145th kg583 🇺🇸 843 142 14 Feb 2025 146th duckyluuk 🇳🇱 841 68 4 Oct 2024 147th CLOStrophobic 🇮🇹 840 119 24 Feb 2025 148th sean-niemann 🇺🇸 840 121 30 Nov 2024 149th lynn 840 131 8 Jan 2025 150th error256 839 94 7 Oct 2024 Prev 76–150 of 726 Next