on to the last rank, or to an outside file, e.g. K R 5 or Q R 4, K 1 or Q 8.
Example 4.—We 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:
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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
