puzilla.org is the FamilySearch partner website.
One feature, one of the few features in new.familysearch.org that people hated to give up was the ease of doing descendancy research. This new site, is easier and more powerful.
There are videos to explain the site. Each dot is a person. Click the dot and it will take you to the person in family tree. Each dot or person has a roll over feature that displays a summary card of that person.
Hit shift click and you get the descendacy chart for the new person selected.
It says it's still in beta but go have fun. I am telling you it's cool.Click here for their site