Does the material add up to the mental?

Further, when people define matter, they do it by defining the mental out of it. If we start attributing mental properties to matter at the basic level of analysis, we don't call that materialism, we call it panpsychism. Yet, we couldn't do science without minds, so somehow these material states some how add up, put together, to a mental state. OK, but now, it looks to me as if, if you add up material states until doomsday, you never close the question of whether the mental state is there. The computer beats me in chess, but does it have the inner states of mind that go along with winning a chess game. Most of us would say no. So something can function as mental, it seems to me, without actually being mental.