yeah, i just looked it up again because I started to doubt what I found the first time and you're right. Still, a good estimate of how many instructions are required to evaluate a move/position is needed and I can't imagine that would be a small number (I just moved the bishop, i still have my finger on it :) what is it attacking now, what is attacking it?), and I don't see a promising way to "factor" that across multiple positions without hardware support as Deep Blue had or the parallel circuits in the human brain.