Here you observe that White has the great advantage of a Queen against a Rook; but with all this, and the move to boot, it is impossible for him to do more than draw the game. It is evident that he cannot move his Queen from the front of his King on account of exposing him to check with the Rook. If he move his King, Black takes the Queen, and the game is drawn. And lastly, if he take the Rook with his Queen, he places the adverse King in the position before described of stalemate.
No. 13.
BLACK.
WHITE.
ON THE RELATIVE VALUE OF THE CHESS FORCES.
An attempt to establish a scale of powers whereby the relative values of the several men could be estimated with mathematical exactitude, although it has frequently engaged the attention of scientific minds, appears to be an expenditure of ingenuity and research upon an unattainable object. So ever varying, so much dependent on the mutations of position which every move occasions, and on the augmented power which it acquires when combined with other forces, is the proportionate worth of this with that particular man, that it would seem to be beyond the reach of computation to devise a formula by which it can be reckoned with precision. But still an approximation to correctness has been made, and the result arrived at gives the following as the ultimate respective values:—