Your thoughts

Reading is hard, I see. So you didn't even try.
Back to the question: nobody can answer that. It is impossibly hard. Even when chess is fully solved (in the year 3023), this still will be an impossibly hard question.

Black can win 3 pieces. Which ones? That depends upon which ones they want.
I see. This means black can still get my queen. thanks for your feedback
"Theres nothing we can do"-Black. Anyway if i have to answer then i think white will lost 2 bishop and a queen to capture black piece if both played perfect.
Assuming white and black are two countries at war. How would you describe the situation for both?
If loss is kept to a minimum, what are the pieces must white lose in order to take out every black pieces before check mating the king?