The comments made about volume 1
hold true ...
In addition, the expansion of this project involves some complications:
Because of insufficient data I will have to combine the results of the years 1876 to 1880 into one ranking list, my initial list.
the Challenge Round years:
Honestly, the Challenge Round does not really fit to my project!
My rankings are based on matches won and will stay like this, also for those early years. The title holder plays one match and receives points for that one match only!
Therefor many interested viewers will disagree with the outcome of my work and will turn away with disappointment, understandably.
the Word War years:
If still tournaments held, especially during WW2, than outside Europe mostly local, sometimes national with shrinked draws.
I think it would be fair to use the last World ranking before each war broke out to determine the tournaments' competition value,
as long as the war and its consequences are mostly overcome.
Furthermore I have to think about how to handle bonus/quality points in those years. (But it's a lot of time to think about it until reaching such a point in the progress.)