In addition to the standard set of pieces, the program offers some alternative ways of displaying the pieces on the board. The simplest way to change them is by Right click -- Board Design from the board.

 

The Board design dialog contains the entry "Pieces".

 

 

This allows you to select the set of pieces you wish; it will then be used to display the pieces on the board.

 

 

Under Board - Pieces you can select the pieces too.