In fact, numerical estimates show that the number of possible games of Go far exceeds.
It is focused on building from the ground up nothing to something with multiple, simultaneous battles leading to a point-based win.
At this rate, even given an exceedingly low estimate of 10 operations required to assess the value of one play of a stone, Tianhe-2 would require 4 hours to assess all possible combinations of the next eight moves in order to make a single play.