I heard a lot about the advantage of having a bishop pair and I am interested in the statistics about this. More specifically, if we collect a huge number of games (master games only, or games including non-titled players) for which at any point of the game, one side has exactly two bishops as his/her only minor pieces and his/her opponent has exactly two knights (or N+B) as his/her only minor pieces, what is the winning percentage?
I will be interested in the winning percentage of:
- BB vs NB
- BB vs NN
- NB vs NN.
Edit I know this is extremely rare; but what will happen to the winning percentage for BB vs NB and BB vs NN if the two bishops are of the same colour? (Here is a related question.)