Card Number Validation in Python 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 Submitted 1st bizy-coder 1,000 67 22ms 1 Oct 2024 1st pardouin 🇫🇷 1,000 67 25ms 1 Oct 2024 1st btnlq 1,000 67 23ms 1 Oct 2024 1st Seek64 🇩🇪 1,000 67 22ms 1 Oct 2024 1st m-tkach 🇺🇦 1,000 67 22ms 1 Oct 2024 1st Rubiksmath 1,000 67 26ms 7 Oct 2024 1st JayXon 🇺🇸 1,000 67 22ms 13 Oct 2024 1st khvdm 1,000 67 16ms 28 Feb 2025 9th hallvabo 🇳🇴 985 68 22ms 4 Jun 2025 10th kg583 🇺🇸 957 70 18ms 10 Oct 2024 10th sean-niemann 🇺🇸 957 70 21ms 8 Jan 2025 12th duckyluuk 🇳🇱 931 72 18ms 4 Oct 2024 12th ndren 931 72 20ms 14 Feb 2025 14th moustave 918 73 22ms 5 Nov 2024 14th emgordon154 918 73 19ms 18 Nov 2024 16th anter69 🇭🇺 893 75 16ms 11 Oct 2024 17th lifthrasiir 🇰🇷 882 76 14ms 16 Nov 2024 17th CornerMercury 🇬🇧 882 76 24ms 25 Sep 2025 19th jatloe 870 77 11ms 1 Oct 2024 20th qpwoeirut 859 78 11ms 22 days ago 21st albanian-laundromat 827 81 74ms 16 Jun 2025 22nd SB-945 817 82 17ms 1 Oct 2024 22nd HumanoidCPU 817 82 71ms 7 Mar 2025 22nd fkantelberg 817 82 11ms 11 Jul 2025 22nd BrunoVisnadi 🇧🇷 817 82 13ms 21 Sep 2025 26th Bmrl7 807 83 13ms 3 Oct 2024 27th AlephSquirrel 798 84 23ms 1 Oct 2024 27th kops-cg 798 84 20ms 22 Feb 2025 27th xnor-gate 798 84 20ms 23 Feb 2025 27th plcc0 798 84 18ms 6 Apr 2025 27th KatieLG 🇬🇧 798 84 19ms 25 May 2025 32nd inventshah 788 85 23ms 4 Oct 2024 32nd Artemis21 🇬🇧 788 85 10ms 10 Jan 2025 32nd keelimeguy 🇺🇸 788 85 18ms 14 Jun 2025 35th Babafaba 779 86 20ms 7 days ago 36th wh3n3v3r 🇨🇿 761 88 11ms 18 Nov 2024 37th nwellnhof 🇩🇪 744 90 93ms 1 Oct 2024 37th ovs-code 🇩🇪 744 90 22ms 3 Oct 2024 37th ryyyn 🇺🇸 744 90 20ms 26 Jul 2025 37th luuumine 🇫🇷 744 90 17ms 15 days ago 41st 5cw 🇺🇸 736 91 15ms 1 Oct 2024 41st stefangimmillaro 736 91 22ms 13 Oct 2024 41st dokutan 736 91 11ms 19 Oct 2024 41st GrayJoKing 🇦🇺 736 91 20ms 2 Jul 2025 41st snoozingnewt 🇺🇸 736 91 11ms 16 days ago 46th Shanethegamer 🇺🇸 728 92 18ms 3 Oct 2024 46th error256 728 92 26ms 7 Oct 2024 46th thatbirdguythatuknownot 728 92 17ms 14 Oct 2024 49th Bulmenisaurus 720 93 19ms 6 Oct 2024 49th lynn 720 93 17ms 8 Jan 2025 49th RaBa21 🇭🇺 720 93 17ms 19 Jul 2025 52nd DialFrost 🇸🇬 713 94 21ms 1 Oct 2024 53rd KasperKivimaeki 🇫🇮 698 96 43ms 1 Jul 2025 53rd MeWhenI 🇻🇦 698 96 18ms 30 Jul 2025 55th GolfingSuccess 🇬🇷 684 98 23ms 5 Oct 2024 55th firegene 🇮🇪 684 98 17ms 21 Oct 2024 55th JunkIce 684 98 11ms 3 Dec 2024 58th SirBogman 🇺🇸 677 99 18ms 8 Oct 2024 59th FlorianCassayre 🇫🇷 670 100 19ms 1 Oct 2024 59th bzijlema 🇳🇱 670 100 20ms 10 Oct 2024 59th bricknellj 670 100 17ms 4 Mar 2025 62nd btjones0 663 101 18ms 2 Dec 2024 63rd annaproxy 657 102 19ms 1 Oct 2024 63rd xyangst 657 102 10ms 1 Oct 2024 65th mossiegoat 650 103 11ms 21 Aug 2025 66th fourth-bit 638 105 17ms 1 Oct 2024 66th jared-hughes 638 105 17ms 3 Oct 2024 66th mattyhempstead 638 105 29ms 7 Oct 2024 69th davecame 632 106 17ms 1 Oct 2024 69th starfihs 632 106 10ms 2 Oct 2024 69th rschwa6308 🇺🇸 632 106 18ms 28 Oct 2024 69th snydej 632 106 18ms 21 Nov 2024 69th andrewjc2000 632 106 16ms 17 Jul 2025 69th travisdoesmath 632 106 17ms 7 Sep 2025 75th commandblockguy 🇺🇸 626 107 20ms 7 Oct 2024 1–75 of 200 Next Last