3 B × P ch, K × B. (If 3..K - R 1; 4 Q - R 5, P - K Kt 3; 5 B × P ch, K - Kt 2; 6 Q - R 7 ch, K - B 3; 7 P - Kt 5 ch, K - K 3; 8 B × P ch, R × B; 9 Q - K 4 mate.) 4 Q - R 5 ch, K - Kt 1; 5 Kt - Kt 5, R - B 1; 6 Q - R 7 ch, K - B 1; 7 Q - R 8 ch, Kt - Kt 1; 8 Kt - R 7 ch, K - K 2; 9 R - K 1 ch, K - Q 1; 10 Q × Kt mate.
This combination is rather long and has many variations, therefore a beginner will hardly be able to fathom it; but, knowing the type of combination, he might under similar circumstances undertake and carry out a brilliant attack which he would otherwise never think of. It will be seen that all the combinations shown have for a foundation the proper co-ordination of the pieces, which have all been brought to bear against a weak point.
5. RELATIVE VALUE OF THE PIECES
Before going on to the general principles of the openings, it is advisable to give the student an idea of the proper relative value of the pieces. There is no complete and accurate table for all of them, and the only thing to do is to compare the pieces separately.
For all general theoretical purposes the Bishop and the Knight have to be considered as of the same value, though it is my opinion that the Bishop will prove the more valuable piece in most cases; and it is well known that two Bishops are almost always better than two Knights.
