Hello,
Suppose we have this example (my real problem has 45 regions here is only 7):
%Coloring Australia
coloring(Wa,Nt,Sa,Ql,Nsw,V,T):-
%Country borders relation to other Countries
different(Wa,Nt),
different(Wa,Sa),
different(Nt,Wa),
different(Nt,Sa),
different(Nt,Ql),
different(Sa,Wa)...