Originally Posted by Zeeshan
jai giye zed bhaike jalai...
Dr Zed...there is surely no way you rattled that out from top of your brain.. source/credit koi!... nalish dibo...dibo? dibo naki? :p
I did rattle that from memory. I had read extensively on the history of chess in the mid 80s when I was a serious competitive player in the local Dhaka tournaments.
Look it up - consider that a learning exercise. For example - when did the queen become more powerful (that sped the adoption of chess).