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Sorry, I still don't know what you mean.  The rules of Chess and Go, and
the criteria for victory, are equally unambiguous.  Computers use similar
methods to analyze both.  It's just that with Go, the computer runs out of
steam sooner, because of the large branching factor and the higher number
of moves.  Of course, it is also important that these factors do not
prevent human skill from operating in ways that computers cannot yet
replicate.

But no, I am not denying that there may be ways to fine tune a computer program to more closely approximate human skill.