Card Number Validation in Python 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 78th snydej 632 106 20ms 21 Nov 2024 78th andrewjc2000 632 106 19ms 17 Jul 2025 78th travisdoesmath 632 106 18ms 7 Sep 2025 84th commandz0 🇺🇸 626 107 19ms 7 Oct 2024 84th zbreit 🇺🇸 626 107 18ms 29 Oct 2024 84th StardustGogeta 626 107 17ms 30 Oct 2024 84th ZakkkkAttackkkk 🇵🇭 626 107 19ms 8 Feb 2025 84th InigoK 🇺🇸 626 107 19ms 22 Sep 2025 84th Lv0Sys 🇵🇱 626 107 19ms 22 Feb 2026 90th neihousaigaai 620 108 19ms 4 Oct 2024 90th StefanHabel 🇨🇦 620 108 20ms 23 Jan 2025 90th CaedenHarper 🇨🇦 620 108 18ms 22 Jul 2025 93rd cros107 🇦🇺 609 110 18ms 1 Jan 2025 93rd guilhem-roy 🇫🇷 609 110 19ms 29 May 2025 95th mousetail 🇳🇱 604 111 20ms 6 Oct 2024 96th OllieBoyne 🇬🇧 598 112 19ms 17 Oct 2024 96th WillConker 598 112 11ms 22 Oct 2024 96th maxgodfrey2004 🇨🇦 598 112 10ms 4 Jan 2025 99th jipsong 🇩🇪 583 115 18ms 12 May 2025 100th rowechenzhong 578 116 17ms 17 Oct 2024 101st dtbao20 🇻🇳 573 117 19ms 1 Oct 2024 101st Pyroan 573 117 18ms 22 Feb 2025 101st vgamula 🇺🇦 573 117 17ms 5 Aug 2025 101st FortuiteMan 🇫🇷 573 117 18ms 1 Dec 2025 101st yujqiao 573 117 25ms 16 Dec 2025 106th elgan65536 🇺🇸 568 118 11ms 2 Oct 2024 106th logvp 568 118 18ms 6 Oct 2024 106th ahmetdemirag 🇨🇾 568 118 10ms 6 Feb 2025 106th dirckvdende 568 118 17ms 10 Jul 2025 106th scpchicken 🇵🇼 568 118 46ms 3 days ago 111th jtaxen 563 119 18ms 21 Oct 2024 111th psbpsbp 563 119 9ms 19 Dec 2024 111th klixel 🇨🇦 563 119 10ms 9 Apr 2025 111th vhoulbreque 🇫🇷 563 119 16ms 21 Nov 2025 115th TaserTheFox 🇺🇸 558 120 18ms 8 Oct 2024 115th yokasuretsu 558 120 11ms 26 Jan 2025 115th Troon 558 120 10ms 17 Feb 2025 118th BREMAUCY 🇫🇷 554 121 17ms 18 Jul 2025 118th retrohun 554 121 10ms 22 days ago 120th chartung17 549 122 10ms 24 Mar 2025 121st msbranicky 545 123 17ms 3 Oct 2024 121st bobbysq 545 123 12ms 5 Oct 2024 121st wuzekai518 545 123 10ms 8 Oct 2024 121st denkyuu1 545 123 18ms 10 Mar 2026 121st fuzzylojik-golf 🇺🇸 545 123 17ms 16 days ago 126th NotEvenIndian 540 124 14ms 22 Oct 2024 126th ridingqwerty 🇺🇸 540 124 20ms 16 Jan 2025 126th CommandLeo 🇮🇹 540 124 11ms 5 Oct 2025 129th bnic24 536 125 18ms 3 Oct 2024 129th adoxography 536 125 10ms 22 Oct 2024 129th lelbal 536 125 10ms 14 Oct 2025 132nd CatsAreFluffy 528 127 17ms 30 Oct 2024 132nd WillowWispy 528 127 11ms 25 May 2025 134th madex 🇩🇪 519 129 21ms 2 Oct 2024 134th RedzGoose 🇦🇺 519 129 11ms 15 Oct 2024 134th calebaitken 519 129 10ms 11 Apr 2025 134th rollershutter 519 129 19ms 20 Nov 2025 138th Europe2048 515 130 11ms 2 Oct 2024 138th nstearns96 🇬🇧 515 130 17ms 2 Oct 2024 138th Stockoh 🇫🇷 515 130 17ms 4 Jul 2025 141st inverseLorentz 🇦🇺 511 131 12ms 7 Oct 2024 141st sciencejiho 511 131 24ms 11 Feb 2025 141st Jaydosu 511 131 11ms 11 Apr 2025 141st Emutis 🇱🇹 511 131 10ms 11 Nov 2025 145th Mabeloid 🇳🇴 504 133 10ms 2 Oct 2024 146th Mikey-Beep 🇬🇧 496 135 17ms 8 hours ago 147th sciencedjinn 493 136 10ms 8 Nov 2024 147th mchalunderscore 493 136 20ms 4 Jan 2025 147th Florian-Mt 493 136 17ms 5 Dec 2025 150th kurkale6ka 489 137 29ms 16 Oct 2024 150th 4ndyJ 🇬🇧 489 137 12ms 14 Nov 2024 150th wobblybits 489 137 18ms 17 Aug 2025 150th Andrey2001 489 137 16ms 1 Feb 2026 150th tomh1012 489 137 18ms 4 Mar 2026 150th Aquateraneal 🇺🇸 489 137 18ms 8 Mar 2026 156th NanduBC 479 140 11ms 1 Oct 2024 156th jmerle 🇳🇱 479 140 10ms 10 Jan 2025 156th RobertHoeh 479 140 10ms 3 Mar 2025 156th smilesformiles3 479 140 18ms 12 Jun 2025 156th artem-aramma 479 140 16ms 18 Jun 2025 First Prev 81–160 of 223 Next Last