Fischer has brought a lot of power into focus on his d5 square. He has no interest in allowing
Black to form a powerful pawn chain that will dramatically reduce White's King Bishop, a
favored piece of Fischer, to irrelevance for a long time. Even so, White will have to decide
where (or if) to castle and what to do with his Queen and black-squared Bishop. Likewise,
Black must decide on places for his remaining three pieces, especially the King's Bishop.