basically it sets up each pair of the eight players in base chokepoints... and then those four lead out into the center, which is moderately gas/mineral rich.
amy and I can usually, at this point, take three computers easily. this map is... hell. :) a very nice hell. we played as terran and zerg versus two protoss and a zerg... probably seven times. lost each one.
learned a bit, but still lost. quickly, even. we haven't made it past the first chokepoint yet.