 Bd3 white returns the bishop on this ideal square, where it supports white's strategic ambition of pushing e3-e4 in the near future, and gives White the option of playing Ne4 if necessary.Black's main plan, on the other hand, is to find a way to push c6-c5 in order to free the long diagonal for his light-squared bishop and to get rid of the backward pawn on the semi-open c-file.In practice, black has three alternative moves in this position