although there is a difference in the estimate here given.

A Rook is of the value of five Pawns and a fraction, and may be
exchanged for a minor Piece and two Pawns. Two Rooks may be exchanged
for three minor Pieces.

The Queen is usually reckoned equal, in average situations, to two Rooks
and a Pawn, but towards the end of a game she is hardly so valuable as
two Rooks.

These comparative values may be of service to the student in general
cases of exchanging men, but he will find in practice the relative worth
of his soldiers is modified by so many circumstances of time,
opportunity, and position, that nothing but experience can ever teach
him to determine accurately in every case "which to give up and which to
keep."




THE CHESS CODE.

OR, LAWS OF THE GAME.


DEFINITIONS OF TERMS USED.

Whenever the word "_Umpire_" is used herein, it stands for any
Committee having charge of Matches or Tournaments, with power to
determine questions of chess-law and rules; or for any duly