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Monday, July 18, 2011

Chess Improvement Ideas 13

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The Double Attack

Any attack, as the nake implies, is an attack against two pieces or pawns at the

same time.

There are three main types of double attack

1) Discovered Attack

2) Forks

3) Attacks by a pawm.

The double attack is a tactic. it does not qualify as a combination for two reasons: First, a double attack can be one move as opposed to a series of moves; and second, a double attack does not necessarily involve a sacrifice. Many other tactical themes involve double attacks.

Discovered Attacks

A Queen, Rook or Bishop lies in wait so that it can attack another piece or pawn of its own colour moves out of its way.

Let's look at the examples.

Diagram shows a simple but clear example of a discovered attack. If white moves his Bishop, he will create a discovered attack on the Black Queen with the Rook on e1. However, moves like 1 Bd3 or 1 Bf3 do not accomplish much because Black would sidestep his Queen to safety on d6 or f6. this is where the double attack comes in handy. By playing 1 Ba6! White creates a discovered attack on Black's Queen and also attacks his Rook on c8, threatening two pieces at once with one move.

After you have grasped the principle in an example, it can be instructive to change the position a bit to see how the change affects the result. In diagram above how would putting the Black b6-pawn on b7 affects the situation? What if the Black Rook were on a8 instead c8?

In the above diagram we see Black has two kinghts ( 6 points ) vs a Rook and a pawn ( 6 points ) and appears to be doing well. Unfortunately, both Knights are undefended. (Remember Silman's Rule of Recognition ) White creates a discovered attack with 1. Ke3! Suddenly Black's d8-Knight is attacked by White's Rook, and the f3-knightis threatened by White's King. Black, to his sorrow, is forced to part with a Knight.

More examples will be added

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