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.
+---+---+---+---+---+---+---+---+
| K*| | | | | | | |
+---+---+---+---+---+---+---+---+
| | | R*| | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | Q | | | | | |
+---+---+---+---+---+---+---+---+
| | | K | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
WHITE.