Humans don't have much capacity for systematic tree search. It's sort of amazing that humans can do as well as they can, given that limitation.

I don't think what you're saying has any connection to chess or chess clubs.

2kB is a very small fraction of what we'd like to think counts as human

This doesn't seem to mean anything. Why would 2KB have any relation to "counting as human". It's the data of about 10 comments.