Damin M. Gonzlez wrote in post #1131525:
> Hello fellows, how are you?

Very well, thank you :)

> I will appreciate your help. Thank you.


for this kind of algo, see 'wave' or 'flood' algorithm :
 imagine some water which drop at your start position.
 first particule which arrive to destination has take the
 best path.
 so if each particule memorize his path, you have the solution.

http://en.wikipedia.org/wiki/Lee_algorithm