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 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 Chars Time 74th sean-niemann 🇺🇸 886 79 3 Nov 2024 77th nwellnhof 🇩🇪 886 80 2 Oct 2024 77th Yax42 🇫🇷 886 80 7 Feb 2025 79th JayXon 🇺🇸 886 134 3 Oct 2024 80th MeWhenI 🇻🇦 885 64 3 Oct 2024 81st error256 884 68 2 May 2025 82nd moustave 884 73 5 Nov 2024 82nd emgordon154 884 73 18 Nov 2024 84th pardouin 🇫🇷 883 54 1 Oct 2024 84th MeWhenI 🇻🇦 883 54 3 Oct 2024 84th error256 883 54 7 Oct 2024 84th nwellnhof 🇩🇪 883 54 13 Oct 2024 84th sean-niemann 🇺🇸 883 54 2 hours ago 89th nwellnhof 🇩🇪 883 105 17 days ago 90th dmrichwa 🇺🇸 881 73 5 Oct 2024 90th DialFrost 🇸🇬 881 73 12 Oct 2024 92nd nwellnhof 🇩🇪 879 135 16 Oct 2024 93rd GrayJoKing 🇦🇺 878 90 3 Oct 2024 93rd FlyingPenguin223 878 90 16 Oct 2024 95th acotis 877 106 29 May 2025 96th KasperKivimaeki 🇫🇮 876 80 16 Oct 2024 97th edsrzf 🇳🇿 876 91 16 Aug 2025 98th JayXon 🇺🇸 875 79 17 Oct 2024 99th edsrzf 🇳🇿 875 80 26 Jul 2025 100th sean-niemann 🇺🇸 874 76 24 Oct 2024 101st JayXon 🇺🇸 874 95 23 Jul 2025 102nd JayXon 🇺🇸 870 93 14 Oct 2024 103rd edsrzf 🇳🇿 870 115 24 Jul 2025 104th Natanaelel 🇸🇪 869 74 1 Oct 2024 104th helbling 🇨🇭 869 74 1 Oct 2024 104th Irratix 🇳🇱 869 74 14 Oct 2024 104th emgordon154 869 74 18 Nov 2024 108th JayXon 🇺🇸 869 117 5 Oct 2024 109th DialFrost 🇸🇬 868 74 17 Mar 2025 110th Shanethegamer 🇺🇸 868 91 4 Oct 2024 111th ovs-code 🇩🇪 867 55 5 Oct 2024 112th JayXon 🇺🇸 866 84 24 May 2025 113th ovs-code 🇩🇪 866 127 2 Oct 2024 114th ovs-code 🇩🇪 865 69 4 Oct 2024 115th UnderKoen 🇳🇱 865 86 4 Oct 2024 116th sean-niemann 🇺🇸 864 51 2 Oct 2024 117th emgordon154 863 77 8 Nov 2024 118th ovs-code 🇩🇪 862 29 4 Oct 2024 119th anter69 🇭🇺 861 75 11 Oct 2024 120th Natanaelel 🇸🇪 860 33 6 Oct 2024 120th GrayJoKing 🇦🇺 860 33 6 Jun 2025 120th SirBogman 🇺🇸 860 33 8 Jul 2025 123rd nwellnhof 🇩🇪 860 68 5 Oct 2024 124th pardouin 🇫🇷 859 66 10 Apr 2025 125th voytxt 🇨🇿 857 75 1 Oct 2024 125th MeWhenI 🇻🇦 857 75 2 Oct 2024 125th m-tkach 🇺🇦 857 75 5 Oct 2024 125th error256 857 75 7 Oct 2024 129th kg583 🇺🇸 855 67 1 Oct 2024 130th xsot 🇸🇬 855 82 6 May 2025 131st m-tkach 🇺🇦 855 87 6 Oct 2024 132nd JayXon 🇺🇸 855 104 6 Oct 2024 133rd tomtheisen 🇺🇸 854 83 10 Feb 2025 134th MeWhenI 🇻🇦 854 92 24 Dec 2024 135th stefangimmillaro 854 139 3 Oct 2024 135th edsrzf 🇳🇿 854 139 23 Jul 2025 137th ovs-code 🇩🇪 853 46 4 Oct 2024 137th nwellnhof 🇩🇪 853 46 7 Oct 2024 139th JayXon 🇺🇸 853 95 4 Oct 2024 140th sean-niemann 🇺🇸 852 68 1 Oct 2024 141st edsrzf 🇳🇿 850 86 24 Jul 2025 142nd MostParsingVex 850 100 1 Oct 2024 143rd lifthrasiir 🇰🇷 849 76 16 Nov 2024 143rd CornerMercury 🇬🇧 849 76 17 days ago 145th emgordon154 846 67 18 Nov 2024 146th IanUtley 844 113 2 Oct 2024 147th edsrzf 🇳🇿 844 137 16 Aug 2025 148th duckyluuk 🇳🇱 843 68 4 Oct 2024 149th KasperKivimaeki 🇫🇮 842 141 3 days ago 150th error256 840 94 7 Oct 2024 First Prev 76–150 of 773 Next Last