chess is totally a sport If you go to a library you will see chess books under the sport section
Is this equally true with both Library of Congress and Dewey Decimal classifications? What about the systems of classification used in other countries?
It might be different now, but the last time I went to look for a chess book, it was under the games section. With backgammon, poker, checkers, etc.
But wait... by that definition stuff like backgammon, checker, domino and scrabble must be considered sport also? But those are game surely?! And what about the phrase Olympic Games? Not sport but games?
There is a thin line distinguishing something from being a leisure activity or a sport.Most important criteria is the spectators/fans.This is generally derived from the popularity of the activity. The games you mentioned do not make the cut according to major sports bodies. Chess and some other sports which are not predominantly physical are included given their rich history and popularity.
As Optimissed pointed out, TV quiz shows are sports now? Certainly FAR more popular and more spectators than chess. How many people watched the recent Jeopardy winner vs. how many people watched the US national chess championship? Or even world championship. It's probably not a good idea to bring up spectators as a requirement for sport. Watching chess is like watching paint dry, which is why so few people watch it.
There is a minimum threshold to be met for one criteria. Popularity is just one among many criteria for something to be a sport.
OK, what's the minimum threshold? You said the "most important criteria is the spectators/fans" If the most important criteria has the least amount going for it, isn't that a pretty big problem?