check, and, as the Rook's Pawn is in the way, the Queen cannot be captured by the Rook. By moving the King, however, White cannot castle.
For Black's fifth move, he takes his QP which has not yet been moved and places it on Q4. This opens the diagonal for the Queen's Bishop and for the King's Bishop. Had Black only moved his Pawn to Q3, it would have freed his QB but it would have interfered with the long diagonal commanded by the KB. It is evident from this that Black intends to move his QB to KKt5 and give check with it so White should look out for him. (See diagram xiii.)
| 6, | P×P |
| B—Kt5 (ch.) |
(6) White, however, does not notice that Black can give check in the next move but captures his adversary's Pawn with his own Pawn that stands on K4. The forces of the two players are now equal and the advantage gained by White is to place his Pawn on Q5 where it commands
