
Re: 4 colors problem
Posted:
Mar 4, 2014 1:03 PM


On Tuesday, March 4, 2014 3:23:37 PM UTC+1, swtch...@gmail.com wrote: > What does it mean that a checkered map can be colored with two colors?
ABABABA BABABAB ABABABA
Like the http://en.wikipedia.org/wiki/Checkered_flag#The_chequered_flag
> [...] but 4 colors is not sufficient in case the length is longer by a multiple of even numbers (twice as long, 4 times as long...) and the solution may require 5 colors or 6 colors, or more.
Are you saying that you think there are maps that cannot be colored with 4 colors ???
g.

