White's threat to regain the Pawn was merely with the idea of gaining time to develop his pieces. Black could have played P - Q 3; opening the way for his Q B, when would have followed, 11 B - Q 3, R - K 1; 12 Kt - B 3, and White would soon start a powerful direct attack against Black's King. With the text move Black aims at taking the initiative away from White in accordance with the principles laid down in this book.
11. Kt - R 3
If B × P, P - Q 3; and White's Bishop would be completely shut off, and could only be extricated, if at all, with serious loss of position. The text move aims at quick development to keep the initiative.
11. ........
P - Q 3
This now is not only a developing move, but it also threatens to win a piece by B × Kt.
