White has now two pieces more in play than Black, instead of only
one, and the mobility of the White Queen, which Black himself has
brought out, begins to have a threatening effect on Black's game.

6. ... Kt-KB3
7. Q-QKt3 Q-K2

Black cannot cover his King's Bishop's Pawn with Q-Q2 because 8.
QxP wins the Rook, whilst now Black could play 8. ... Q-Kt5ch in
reply, forcing the exchange of Queens. The text move, which is
forced, blocks the Bishop, and at the same time prevents the
development of the King's Rook, all of which is the direct
consequence of the loss of one move.

8. Kt-B3

White rightly disdains the gain of the Knight's Pawn, but
prevents the exchange of Queens in developing a piece. He proves
the superiority of his position much more convincingly in that
way. Black must now lose yet another move to protect his Knight's
Pawn.

8. ... P-B3
9. B-KKt5 P-Kt4

Black must try to develop his Queen's Knight at last. He cannot
play QKt-Q2 at once, since his Knight's Pawn would again be
unprotected; therefore he plays the move in the text, probably
thinking that now White also must lose a move to withdraw his
Bishop. But in view of the fact that Black's game is wholly