comparatively easy to win. We deduce from the above that the main object is to force the Black Rook away from the defending King, and that, in order to compel Black to do so, we must bring about the position in the diagram with Black to move. Once we know what is required, the way to proceed becomes easier to find. Thus:
| 1. Q - K 5 ch |
Not 1 Q - R 6, because R - B 2 ch; 2 K - Kt 6, R - B 3 ch; 3 K × R. Stalemate. (The beginner will invariably fall into this trap.)
| 1. ........ | K to R 1 or to R 2 | |
| 2. Q - R 1 ch | K - Kt 1 | |
| 3. Q - R 5 |
In a few moves we have accomplished our object. The first part is concluded. Now we come to the second part. The Rook can only go to a White square, otherwise the first check with the Queen will win it. Therefore
| 3. ........ | R - Kt 6 | |
| 4. Q - K 5 ch | K - R 1 best | |
| 5. Q - R 8 ch | K - R 2 | |
| 6. Q - Kt 7 ch | K - R 1 | |
| 7. Q - Kt 8 ch | R - Kt 1 | |
| 8. Q - R 2 mate |
(The student should find out by himself how to win when 3...R - Kt 8; 4 Q - K 5 ch, K - R 2.)
Example 41.—The procedure here is very similar. The things to bear in mind are that the Rook must be prevented from interposing at Kt 1 because of an immediate mate, and in the same way the King must be prevented from going either to R 3 or B 1.