Looking at the sire's pedigree, I think it is safe to assume that he only has one copy of black, so that would make him Ee. Since he has so many chestnuts and greys in his lines we can't deduct anything else about his agouti status. So we are looking at: ....E e e| Ee ee e| Ee ee and ....A ? ?| A? ?? ?| A? ?? In english, 50% chance of being black based, 50% known chance of carrying agouti. I can't do the math any further than that.