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| Friday, March 27, 2009 |
On the next move White will, therefore, take the Pawn calling
Check and at the same time attacking the Rook a8. The King must
move and the Knight takes the Rook.
Quite frequently a similar attack with the Knight is likely to
win the Queen if the opponent is not familiar with situations of
that kind. If in the position of Diagram 21 White plays (1) Kt-
d5, Black must protect the Pawn c7 by Q-d8 or Q-d6, but not by Q-
c6; for in the latter case White would continue with (2) B-b5,
Qxb5; (3) Ktxc7+ and (4) Ktxb5.
+---------------------------------------+
8 | #R | #Kt| #B | | #K | #B | | #R |
|---------------------------------------|
7 | #P | #P | #P | | | #P | #P | #P |
|---------------------------------------|
6 | | | | | #P | #Kt| | |
|---------------------------------------|
5 | #Q | | | | | | | |
|---------------------------------------|
4 | | | ^B | ^P | | | | |
|---------------------------------------|
3 | | | ^Kt| | | | | |
|---------------------------------------|
2 | ^P | ^P | ^P | ^B | | ^P | ^P | ^P |
|---------------------------------------|
1 | ^R | | | ^Q | ^K | | ^Kt| ^R |
+---------------------------------------+
a b c d e f g h
DIAGRAM 22.
Sometimes two pieces are involved in the double attack, the line
of one of the pieces being discovered by the other. Thus, in the
position of Diagram 22, which could be brought about by the moves
(1) P-e4, P-d5; (2) Pxd5, Qxd5; (3) Kt-c3, Q-a5; (4) P-d4, Kt-f6;
(5) B-c4, P-e6; (6) B-d2, white threatens to play (7) Kt-d5,
uncovering the Bishop d2 on Black's Queen and at the same time
attacking the Pawn c7, which Black cannot keep protected.
Threats of this kind more frequently occur in connection with a
discovered Check. As an example the following opening will serve:
(1) P-e4, P-e5; (2) Kt-f3, Kt-f6; (3) Ktxe5, Ktxe4; (4) Q-e2, Kt-
f6. Black's last move exposes his King to a discovered Check, and
White wins the Queen by playing (5) Kt-c6+.
Next to the Knight the Queen is most frequently in a position to
carry out a double attack. Two typical examples are shown in the
following diagrams.
After the opening moves (1) P-e4, P-e5; (2) P-f4, B-C5; (3)
Pxe5?? the position of Diagram 23 is reached, in which Black wins
a Rook by Q-h4+. White cannot reply (4) K-e2 on account of Qxe4
mate. His only move is (4) P-g3 and then follows Qxe4 attacking
King and Rook simultaneously. |
posted by neptunus @ 5:15 AM
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