The problem with this is we have been defining "perfect game"
Also humans do not usually play perfect games. But how well or poorly humans play games has nothing to do with "solving chess"
In other words perfect games can be played by accident.
Also the best chess computers do not play perfectly. [they are getting close however]
It CAN be yes. But you have no way of knowing if it ever has.
At BEST you can give dumbed down games where only a few obvious moves were played, and even THEN you can only say some of the moves PROBABLY were not errors.
How about a game you claim both side played with no errors and ended in a draw?
You know very well i have already answered this question in the other forum. However I will give one such game here:
How did you determine a future computer that solved chess won’t find that 3...Nf6 loses by force?
Because i know enough about chess to know that will never happen.
[there is other evidence also but what i state here is enough]