Maps coloring help you find a very simple pencil and paper proof of the four color problem. This project is dedicated to find a very simple pencil and paper proof of the four color problem. The approach used to try to solve the problem is based on two results which, I think, haven't been considered so far. See the website for more info.

Requirements:
* Java

The license of this software is Free, you can free download and free use this calculator software.