Virgil
Posts:
8,833
Registered:
1/6/11


Re: 4 colors problem
Posted:
Mar 6, 2014 1:26 AM


In article <virgil0F15D5.22060105032014@BIGNEWS.USENETMONSTER.COM>, Virgil <virgil@ligriv.com> wrote:
> In article <38283755e36d4dd8b1571cb888ed09a8@googlegroups.com>, > swtchwrds88@gmail.com wrote: > > > What are examples of 3 color maps? > > A map with only 3 countries does not need more than 3 colors.
And a suitable map with any number of countries can get by with two colors. Consider a checkerboard as a map in which each square is a country.
It only needs two colors. 

