Yes!
It is not a physical sport as most sports are, but it is a mental sport!
I love your checklist by the way. I once tried making one like that in my head, but decided that playing chess was more important than arguing about whether or not it was a sport.
So i was looking at something interesting today.. and i found out what makes a sport, and what does not make a sport. I will post my conclusion..
What Makes A Sport (A check means chess meets the criteria):
1. rules - check
2. outcome is in doubt before played - check
3. strategy is involved - check
4. there is a vigorous form of exertion - not checked
5. it may or may not be competitive - check
6. numerical scores are kept - check
7. some level of skills is involed - check
8. a person usually must train or practice for it - check
9. the goal is usually winning - check
10. it is pursued for the pleasure of the competition - check
So as we see here.. Chess scores a 9/10 for the what makes a sport.. I strongly see why chess can be viewed as a sport.
Now we will look at what does not make a sport a sport. (Check means thats why it does not make chess a sport)
1. They are recreational activity - Check
2. They do not require excellent physical condition - Semi Check (I believe somewhat you need to be in physical shape to be good at chess)
3. No skilled is required - Not Check
4. They are considered Artistic, not competitive - Not check
5. They are a form of survival skills - Not check
6. They involve subjective scoring - Not check
7. They are an event/Acvitivy ( ex. Track and field, meaning chess does not have to be an event in order for it to be played) - Not check
So in the second section, Chess only got 1.5/7 score for why it is not a sport, i strongly beleive chess can be viewed as a sport seeing the above scores
So my question to you is.. Is chess a sport?
Source - Health class, talking about sports.