Saturday, January 14, 2012

Simple Checkmates: Queen and King Against King

Chess Position: Queen and King Against King Simple CheckmateWe now come to Queen and King against King. As the Queen combines the power of the Rook and the Bishop, it is the easiest mate of all and should always be accomplished in under ten moves. Take the following position as shown in the diagram.

A good way to begin is to make the first move with the Queen, trying to limit the Black King's mobility as much as possible. Thus: 1 Q - B 6, K - Q 5; 2 K - Q 2. Already the Black King has only one available square 2...K - K 4; 3 K - K 3, K - B 4; 4 Q - Q 6, K - Kt 4. (Should Black play K - Kt 5, then Q - Kt 6 ch); 5 Q - K 6, K - R 5 (if K - R 4, K - B 4 and mate next move); 6 Q - K Kt 6, K - R 6; 7 K - B 3, K moves; 8 Q mates.

In this ending, as in the case of the Rook, the Black King must be forced to the edge of the board; only the Queen being so much more powerful than the Rook, the process is far easier and shorter. These are the three elementary endings and in all of these the principle is the same. In each case the co-operation of the King is needed. In order to force a mate without the aid of the King, at least two Rooks are required.

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