The approximate value of the pieces, as they stand on their respective
squares at the beginning of a game, is estimated to be as follows: Taking
the pawn as unit, the value of the Knight is 3.05; of the Bishop, 3.05; of
the Rook, 5.48; and of the Queen, 9.94. German authorities estimate (taking
also the pawn as unit), Bishop = 3; Knight = 3; Rook = 4-1/2; and Queen =
9. The King in the End game is worth 4. Obviously the value of piece or
pawn changes as the game advances, according to the position it occupies
for the time being. There are, however, general principles which hold good
in a large majority of cases. For instance, two Bishops are more
serviceable than two Knights in the End game.[77] Bishop and Knight are
also preferable to two Knights, but a single Knight is more serviceable, in
most cases, in the End game than a single Bishop.
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