The chess pieces pictured are showing what they look like when lined up on the board. In the interest of saving space, however, you will just need to do a quick copy and paste of those pieces that have more than one on the board.
The materials are included. The wood textures and HDRI are not included, as those textures do no belong to me and they were only pictured for example.
Model could easily be used to make a nice looking chess game!