# Loopy – Draw a Single Closed Loop – Puzzle Game

### Loopy

You are given a grid of dots, marked with yellow lines to indicate which dots you are allowed to connect directly together. Your aim is to use some subset of those yellow lines to draw a single unbroken loop from dot to dot within the grid.

Loopy is an implementation of Slitherlink which was invented by Nikoli, a Japanese publisher that specializes in games and, particularly, logic puzzles.

The rules of the game:

• Connect adjacent dots with vertical or horizontal lines to make a single loop
• The numbers indicate how many lines surround it, while empty cells may be surrounded by any number of lines
• The loop never crosses itself and never branches off

Game Modes:

• 7×7 Squares – Easy
• 10×10 Squares – Easy
• 7×7 Squares – Normal
• 10×10 Squares – Normal
• 7×7 Squares – Hard
• 10×10 Squares – Hard
• 10×12 Triangular – Hard
• 7×7 Snub-Square – Hard
• 9×9 Cairo – Hard
• 5×5 Kites – Hard
• 10×10 Penrose (kite/dart) – Hard
• 10×10 Penrose (rhombs) – Hard
• 10×10 Honeycomb – Hard
• 4×5 Great-Hexagonal – Hard
• 7×7 Octagonal – Hard
• 5×5 Floret – Hard
• 4×5 Dodecagonal – Hard
• 4×5 Great-Dodecagonal – Hard
• 3×5 Great-Great-Dodecagonal – Hard
• Custom mode

Below is a short tutorial showing you how to download and compile the latest source code for this game, and the other 38 games in the puzzle collection. The tutorial takes place in Linux, using the Ubuntu 17.10 distribution, but the procedure will be the same, or very similar, for other Linux distributions. If you find the tutorial helpful, please give the video a like and subscribe to our YouTube channel.

 OS Supported Notes Besides the main 3 operating system, the puzzle collection has also been ported by contributors to Palm, Android, Symbian 60, iPhone, iPad, and the Windows Store. Homepage: www.chiark.greenend.org.uk/~sgtatham/puzzles/ Developer: Simon Tatham, Richard Boulton, James Harvey, Mike Pinna, Jonas Kölker, Dariusz Olszewski, Michael Schierl, Lambros Lambrou, Bernd Schmidt, Steffen Bauer, Lennard Sprong, and Rogier Goossens License: MIT Written in: C, Java, JavaScript

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