I have a story where an extremely advanced species has figured out how to produce and control kugelblitzes to a high enough degree that they can calculate the distance to an enemy and produce and fire one to explode at the target. Would there be any possible defense against such a weapon? I had two ideas: 1: outrun it, in my universe we've figured out negative energy density and can make an alcurrier drive. 2: feed it, pump extra energy into your shields so that it passes through you and is a safe distance past before it finally goes off. I see major problems with both, faster than light travel is not an issue for the ship, but accelerating fast enough to outrun a relativistic black hole is. And letting it pass through you, even if it doesn't fully explode, it's still extremely hot because it's close.