Players will have no frame of reference for what logical rules may apply, which can give developers an avenue to really screw with them. (nonfictiongaming.com)
Hartshorne uses logical rules to make sure that all possible positions are considered. (religion-online.org)
That is because in chess a computer can follow preprogrammed rules, but using this strategy for Go is not workable, because the game is largely about patterns rather than a set of logical rules that could be written down. (scientificamerican.com)