(1) P-d4 P-d5 (2) Kt-f3 Kt-f6 (3) P-c4 P-e6 (4) Kt-c3 Ktb8-d7 (5) B-g5 B-b4
Ordinarily the Bishop is developed to e7 as on b4 he is out of place as soon as White has castled.
(6) P-e3 P-c5
With this move Black threatens Q-a5, attacking the Knight c3 for the second time and unpinning the Knight f6 who is then free to cooperate with the Bishop b4 and the Queen by advancing to e4. In trying to counter Black's threat White will seek to do as much as he can for the development of his pieces so as to combine the attack with defense. The King's Bishop is not yet developed, and his most natural developing move happens to cover the square at which Black is aiming with his Knight.
(7) B-d3 Q-a5 (8) Q-b3
+———————————————————-+
8 | #R | | #B | | #K | | | #R |
|———————————————————-|
7 | #P | #P | | #Kt| | #P | #P | #P |
|———————————————————-|
6 | | | | | #P | #Kt| | |
|———————————————————-|
5 | #Q | | #P | #P | | | ^B | |
|———————————————————-|
4 | | #B | ^P | ^P | | | | |
|———————————————————-|
3 | | ^Q | ^Kt| ^B | ^P | ^Kt| | |
|———————————————————-|
2 | ^P | ^P | | | | ^P | ^P | ^P |
|———————————————————-|
1 | ^R | | | | ^K | | | ^R |
+———————————————————-+
a b c d e f g h
DIAGRAM 70.
White has to be very careful on account of the various exchanges possible in the center. Black threatens for instance to exchange first on d4 and then to play Kt-e4 so that the Bishop g5 is attacked by the Queen in case White takes the Knight with his Bishop, allowing the Pawn d5 to clear the fifth rank. Or he might play Kt-e4 first and then exchange on d4. Considering that all these threats are based on the fact that the Knight c3 is pinned as long as White has not yet castled it lies near for White to try (8) o-o. It is true that Black can then win a Pawn by taking twice on c3; however, in doing so he would retard his development and White is bound to obtain a strong attack by getting all of his pieces quickly into action, while Black's Queen is separated from the rest of her troops.
White's eighth move, Q-b3, has several drawbacks. First of all Black could play P-b5! winning a piece for three Pawns as White cannot do better than play (9) Pxb5 or Pxd5 allowing P-C4. Secondly, Black can make the combination indicated above which tends to open the fifth rank so that the Queen attacks g5. The same combination would be possible if White played (8) Q-C2.
(8) … Kt-e4 (9) o-o