6 | | #P | #Kt| #B | #P | #Kt| | |
|---------------------------------------|
5 | | | #P | #P | ^Kt| | | |
|---------------------------------------|
4 | | | | ^P | | | | |
|---------------------------------------|
3 | | ^P | | ^B | ^P | | | |
|---------------------------------------|
2 | ^P | ^B | ^P | ^Kt| | ^P | ^P | ^P |
|---------------------------------------|
1 | ^R | | | ^Q | | ^R | ^K | |
+---------------------------------------+
a b c d e f g h

DIAGRAM 45.

Another advantage of the position for White is that he can get
his King's Rook into play by P-f4 and R-f3-h3, while Black's Rook
cannot get to f6 as long as White has his Pawn on e5.

In King's Pawn openings the situation is different. Here the
squares d5 and d4 respectively are the aim of the Knights which
normally are posted on c3 and c6. However, as long as the
opposing King's Knight can exchange himself for the advancing
Queen's Knight there is no advantage in occupying the center. The
position of Diagram 46 is a typical example. If White plays Kt-d5
he loses practically a move, as after Ktxd5, Pxd5 he has in no
way improved the mobility of his men while it is Black's turn to
move. In addition, White, by transferring his Pawn to d5, gives
up his Pawn-center and blocks a diagonal which his Bishop could