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Rh two squares, however, if the Pawn passes an adverse Pawn, it may be taken in passing by the adversary. When a Pawn has advanced eight squares in any file, it must immediately be exchanged for a Piece of its own color, at the choice of its owner, after which it acts as if it were an original Piece just moved into that square by the player.

From this it will be seen that there may be three or more Queens, Bishops, Knights or Rooks on the board at the same time belonging to the same player, though the number of Chessmen belonging to each player can never exceed sixteen. This power of the Pawn to become a Piece increases its importance, in spite of its slow progress across the board and makes it of more value than would at first be imagined. A fine player may always be identified by his judicious handling of the Pawns.

While the Pawn's move is forward in a vertical line, its power of capturing radiates forward diagonally. Thus if a White