Q. Which of the central squares are more important – d4, d5, e4 or e5? As a point of reference, let’s say the player is playing White. Can you explain why?
A. That depends if you playing so-called light squared game or dark squared game – which basically means what squares you are trying to dominate. So, if you place pawns on d4 & e5 – light squares (increasing the value for light squred bishop) become more important since black squares are being occupied by pawns.