Watch the That's A Handful online guitar lesson by Brad Carlton from Chord Studies: Flamenco Chords Vol. 3
This one is a handful. It shows you how you can move a pattern to a particular key in order to utilize an open string. When we choose our chord fingerings, we have to think about the movement of the individual notes within them, and the fingers we make available to reach them. This progression is based on a familiar flamenco progression that would ordinarily be played with a capo, but in this case we're moving the pattern into the open position to make use of the nut.