2.P to Q 42.P to Q 4
3.P to K 53.P to Q B 4

To prevent the establishment of a centre. It may be taken as a principle—always try to prevent or break the formation of a centre.

4.P to Q B 34.Kt to Q B 3
5.P to K B 4...

In anticipation of Black's probable 5. ... Q to Kt 3, when White would have to develop his K Kt.

...5.Q to Kt 3
6.Kt to B 36.B to Q 2
7.P to Q Kt 3...

In order to play his Bishop to K 3, which he cannot do now, because the Kt P would be en prise.

...7.R to B sq.
8.B to K 38.Kt to R 3
9.B to Q 3...

To prevent 9. ... Kt to B 4, attacking Bishop and Queen's Pawn. 9. ... Kt to K Kt 5 would be loss of time, as White would play 10. B to Kt sq., and then drive the Knight back.

...9.P takes P
10.P takes P10.Kt to Q Kt 5
11.P to K R 3...