“
“3 cloud engines of 10^9 nodes/s each calculate in 5 years
10^9 nodes/s/engine * 3 engines * 3600 s/h * 24 h * 365.25 d/a * 5 a = 4.7 * 10^17 nodes
Thus 3 cloud engines of 10^9 nodes/s can in 5 years weakly solve Chess.”
and there’s another inaccuracy
you assume perfect play from each node, whereas engines that already incorporate 10^9 nodes a second are hugely inaccurate.
Which 10^17 positions?