Fixing what it fell on is.
Luckily it only got my fence. There is a drainage culvert just on the other side. When I get it cleaned up, I should have some nice spalted oak blanks.
But that brings up the importance of chainsaw safety. Here's what happened as best as I can reconstruct it. I started out right cutting a notch on the side where I wanted the tree to fall. Then I cut from the other side about 2" above the point of the notch. That went well except I didn't keep the blade parallel to the notch. That caused the side toward me to cut through the notch before the back side and the tree fell toward where it was still attached.
I'm not sure if you can see from the pictures or not, but the notch may not have been deep enough either. Comments and advice would be appreciated.
Oh, the chain and cable is from the come-along I was using to pull it off the fence. It worked until I reached the stump and didn't have anything left to pull from. Once I get the chainsaw running again (it quit on me.), I'll cut up the pieces and pull it on across.