> There is maybe an Array Dir then make a tricky selection for
> erase that don't wanted in one move!

<< Sorry I'm not understanding this part... But Array Dir is about replicating one object to make multiple repeated copies of it.

I can use the Array dir for replicate all the offset curves in one inclined direction
and maybe from a view i can select with just one selection box all curves
except one curve on the first group copyed, except 2 curves in the second group copyed etc...
for obtain that