I have say, 6,000 polygons roughly 25 acres each, all touching one another, basically a grid but with irregular shapes.

What I need is to start with one shape then in an automated process, select only those shapes that aren't within 300 feet. So of all 6,000 shapes how many can be "used" based on the fact they aren't within 300 feet of each other.

Seems like an easy task but I feel it is overly complicated, at least in my mind.

Thanks

I have say, 6,000 polygons roughly 25 acres each, all touching one another, basically a grid but with irregular shapes.

Using QGIS, how do I start with one shape then in an automated process, select only those shapes that aren't within 300 feet?

So of all 6,000 shapes how many can be "used" based on the fact they aren't within 300 feet of each other.