(In reply to all's well that ends well
by ed bottemiller)
I took a slightly different approach, I went through all possible alphametic values for NEWS,LESS and then seen which give integer solutions to y^4-x^4=news z^4-y^4=less and z=2y-x with x>0 and y>x. I found only one solution which matches your own of x=12 y=13 and z=14.
Posted by Daniel
on 2009-04-15 13:03:21