Dynamism
The following picture emerges. Thinking backwards from a tactical shot, you need to create lines of attack . For lines of attack you need holes in the pawn structure. You need invasion squares in the camp of the enemy. That are squares where you outnumber your enemy through the holes in his fortress walls. The center is paramount. Putting a piece on a central square is the equivalent of a duplo move. From the center, a piece radiates to two flanks at the same time. The ideal is the open center. With no pawns on both sides in the center. In this situation, the dynamism of the pieces is biggest. At the same time, these positions are hardest to assess. Due to that very dynamism. One tempo can change the hole picture. Putting your pieces in the open center, provokes pawn moves from the enemy to chase them away. The defending party should withstand the defying pieces by keeping the pawns where they are. Forward movement create holes, invasion squares and weaknesses. We have to find